1999-04-16 09:35:26 +08:00
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/* Read ELF (Executable and Linking Format) object files for GDB.
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2003-01-13 Andrew Cagney <ac131313@redhat.com>
* ax-gdb.c, c-valprint.c, charset.c, corefile.c: Update copyright.
* demangle.c, disasm.c, dwarf2cfi.c, dwarfread.c: Update copyright.
* elfread.c, eval.c, expprint.c, expression.h: Update copyright.
* f-typeprint.c, findvar.c, gcore.c, gdb_mbuild.sh: Update copyright.
* gdbtypes.h, gnu-v2-abi.c, inferior.h, inftarg.c: Update copyright.
* language.c, language.h, m32r-tdep.c: Update copyright.
* mn10200-tdep.c, scm-lang.c, scm-lang.h: Update copyright.
* somsolib.c, somsolib.h, symfile.c, symtab.h: Update copyright.
* thread-db.c, typeprint.c, utils.c, valarith.c: Update copyright.
* values.c, win32-nat.c, x86-64-linux-nat.c: Update copyright.
* x86-64-linux-tdep.c, z8k-tdep.c: Update copyright.
* cli/cli-decode.h, config/h8500/tm-h8500.h: Update copyright.
Index: mi/ChangeLog
2003-01-13 Andrew Cagney <ac131313@redhat.com>
* mi-cmd-env.c: Update copyright.
2003-01-14 08:49:06 +08:00
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2013-01-01 14:33:28 +08:00
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Copyright (C) 1991-2013 Free Software Foundation, Inc.
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2003-01-13 Andrew Cagney <ac131313@redhat.com>
* ax-gdb.c, c-valprint.c, charset.c, corefile.c: Update copyright.
* demangle.c, disasm.c, dwarf2cfi.c, dwarfread.c: Update copyright.
* elfread.c, eval.c, expprint.c, expression.h: Update copyright.
* f-typeprint.c, findvar.c, gcore.c, gdb_mbuild.sh: Update copyright.
* gdbtypes.h, gnu-v2-abi.c, inferior.h, inftarg.c: Update copyright.
* language.c, language.h, m32r-tdep.c: Update copyright.
* mn10200-tdep.c, scm-lang.c, scm-lang.h: Update copyright.
* somsolib.c, somsolib.h, symfile.c, symtab.h: Update copyright.
* thread-db.c, typeprint.c, utils.c, valarith.c: Update copyright.
* values.c, win32-nat.c, x86-64-linux-nat.c: Update copyright.
* x86-64-linux-tdep.c, z8k-tdep.c: Update copyright.
* cli/cli-decode.h, config/h8500/tm-h8500.h: Update copyright.
Index: mi/ChangeLog
2003-01-13 Andrew Cagney <ac131313@redhat.com>
* mi-cmd-env.c: Update copyright.
2003-01-14 08:49:06 +08:00
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1999-04-16 09:35:26 +08:00
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Written by Fred Fish at Cygnus Support.
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1999-07-08 04:19:36 +08:00
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This file is part of GDB.
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1999-04-16 09:35:26 +08:00
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1999-07-08 04:19:36 +08:00
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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2007-08-24 02:08:50 +08:00
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the Free Software Foundation; either version 3 of the License, or
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1999-07-08 04:19:36 +08:00
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(at your option) any later version.
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1999-04-16 09:35:26 +08:00
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1999-07-08 04:19:36 +08:00
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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1999-04-16 09:35:26 +08:00
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1999-07-08 04:19:36 +08:00
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You should have received a copy of the GNU General Public License
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2007-08-24 02:08:50 +08:00
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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1999-04-16 09:35:26 +08:00
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#include "defs.h"
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#include "bfd.h"
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remove gdb_string.h
This removes gdb_string.h. This patch is purely mechanical. I
created it by running the two commands:
git rm common/gdb_string.h
perl -pi -e's/"gdb_string.h"/<string.h>/;' *.[chyl] */*.[chyl]
2013-11-18 Tom Tromey <tromey@redhat.com>
* common/gdb_string.h: Remove.
* aarch64-tdep.c: Use string.h, not gdb_string.h.
* ada-exp.y: Use string.h, not gdb_string.h.
* ada-lang.c: Use string.h, not gdb_string.h.
* ada-lex.l: Use string.h, not gdb_string.h.
* ada-typeprint.c: Use string.h, not gdb_string.h.
* ada-valprint.c: Use string.h, not gdb_string.h.
* aix-thread.c: Use string.h, not gdb_string.h.
* alpha-linux-tdep.c: Use string.h, not gdb_string.h.
* alpha-mdebug-tdep.c: Use string.h, not gdb_string.h.
* alpha-nat.c: Use string.h, not gdb_string.h.
* alpha-osf1-tdep.c: Use string.h, not gdb_string.h.
* alpha-tdep.c: Use string.h, not gdb_string.h.
* alphanbsd-tdep.c: Use string.h, not gdb_string.h.
* amd64-dicos-tdep.c: Use string.h, not gdb_string.h.
* amd64-linux-nat.c: Use string.h, not gdb_string.h.
* amd64-linux-tdep.c: Use string.h, not gdb_string.h.
* amd64-nat.c: Use string.h, not gdb_string.h.
* amd64-sol2-tdep.c: Use string.h, not gdb_string.h.
* amd64fbsd-tdep.c: Use string.h, not gdb_string.h.
* amd64obsd-tdep.c: Use string.h, not gdb_string.h.
* arch-utils.c: Use string.h, not gdb_string.h.
* arm-linux-nat.c: Use string.h, not gdb_string.h.
* arm-linux-tdep.c: Use string.h, not gdb_string.h.
* arm-tdep.c: Use string.h, not gdb_string.h.
* arm-wince-tdep.c: Use string.h, not gdb_string.h.
* armbsd-tdep.c: Use string.h, not gdb_string.h.
* armnbsd-nat.c: Use string.h, not gdb_string.h.
* armnbsd-tdep.c: Use string.h, not gdb_string.h.
* armobsd-tdep.c: Use string.h, not gdb_string.h.
* avr-tdep.c: Use string.h, not gdb_string.h.
* ax-gdb.c: Use string.h, not gdb_string.h.
* ax-general.c: Use string.h, not gdb_string.h.
* bcache.c: Use string.h, not gdb_string.h.
* bfin-tdep.c: Use string.h, not gdb_string.h.
* breakpoint.c: Use string.h, not gdb_string.h.
* build-id.c: Use string.h, not gdb_string.h.
* buildsym.c: Use string.h, not gdb_string.h.
* c-exp.y: Use string.h, not gdb_string.h.
* c-lang.c: Use string.h, not gdb_string.h.
* c-typeprint.c: Use string.h, not gdb_string.h.
* c-valprint.c: Use string.h, not gdb_string.h.
* charset.c: Use string.h, not gdb_string.h.
* cli-out.c: Use string.h, not gdb_string.h.
* cli/cli-cmds.c: Use string.h, not gdb_string.h.
* cli/cli-decode.c: Use string.h, not gdb_string.h.
* cli/cli-dump.c: Use string.h, not gdb_string.h.
* cli/cli-interp.c: Use string.h, not gdb_string.h.
* cli/cli-logging.c: Use string.h, not gdb_string.h.
* cli/cli-script.c: Use string.h, not gdb_string.h.
* cli/cli-setshow.c: Use string.h, not gdb_string.h.
* cli/cli-utils.c: Use string.h, not gdb_string.h.
* coffread.c: Use string.h, not gdb_string.h.
* common/common-utils.c: Use string.h, not gdb_string.h.
* common/filestuff.c: Use string.h, not gdb_string.h.
* common/linux-procfs.c: Use string.h, not gdb_string.h.
* common/linux-ptrace.c: Use string.h, not gdb_string.h.
* common/signals.c: Use string.h, not gdb_string.h.
* common/vec.h: Use string.h, not gdb_string.h.
* core-regset.c: Use string.h, not gdb_string.h.
* corefile.c: Use string.h, not gdb_string.h.
* corelow.c: Use string.h, not gdb_string.h.
* cp-abi.c: Use string.h, not gdb_string.h.
* cp-support.c: Use string.h, not gdb_string.h.
* cp-valprint.c: Use string.h, not gdb_string.h.
* cris-tdep.c: Use string.h, not gdb_string.h.
* d-lang.c: Use string.h, not gdb_string.h.
* dbxread.c: Use string.h, not gdb_string.h.
* dcache.c: Use string.h, not gdb_string.h.
* demangle.c: Use string.h, not gdb_string.h.
* dicos-tdep.c: Use string.h, not gdb_string.h.
* disasm.c: Use string.h, not gdb_string.h.
* doublest.c: Use string.h, not gdb_string.h.
* dsrec.c: Use string.h, not gdb_string.h.
* dummy-frame.c: Use string.h, not gdb_string.h.
* dwarf2-frame.c: Use string.h, not gdb_string.h.
* dwarf2loc.c: Use string.h, not gdb_string.h.
* dwarf2read.c: Use string.h, not gdb_string.h.
* elfread.c: Use string.h, not gdb_string.h.
* environ.c: Use string.h, not gdb_string.h.
* eval.c: Use string.h, not gdb_string.h.
* event-loop.c: Use string.h, not gdb_string.h.
* exceptions.c: Use string.h, not gdb_string.h.
* exec.c: Use string.h, not gdb_string.h.
* expprint.c: Use string.h, not gdb_string.h.
* f-exp.y: Use string.h, not gdb_string.h.
* f-lang.c: Use string.h, not gdb_string.h.
* f-typeprint.c: Use string.h, not gdb_string.h.
* f-valprint.c: Use string.h, not gdb_string.h.
* fbsd-nat.c: Use string.h, not gdb_string.h.
* findcmd.c: Use string.h, not gdb_string.h.
* findvar.c: Use string.h, not gdb_string.h.
* fork-child.c: Use string.h, not gdb_string.h.
* frame.c: Use string.h, not gdb_string.h.
* frv-linux-tdep.c: Use string.h, not gdb_string.h.
* frv-tdep.c: Use string.h, not gdb_string.h.
* gdb.c: Use string.h, not gdb_string.h.
* gdb_bfd.c: Use string.h, not gdb_string.h.
* gdbarch.c: Use string.h, not gdb_string.h.
* gdbtypes.c: Use string.h, not gdb_string.h.
* gnu-nat.c: Use string.h, not gdb_string.h.
* gnu-v2-abi.c: Use string.h, not gdb_string.h.
* gnu-v3-abi.c: Use string.h, not gdb_string.h.
* go-exp.y: Use string.h, not gdb_string.h.
* go-lang.c: Use string.h, not gdb_string.h.
* go32-nat.c: Use string.h, not gdb_string.h.
* hppa-hpux-tdep.c: Use string.h, not gdb_string.h.
* hppa-linux-nat.c: Use string.h, not gdb_string.h.
* hppanbsd-tdep.c: Use string.h, not gdb_string.h.
* hppaobsd-tdep.c: Use string.h, not gdb_string.h.
* i386-cygwin-tdep.c: Use string.h, not gdb_string.h.
* i386-dicos-tdep.c: Use string.h, not gdb_string.h.
* i386-linux-nat.c: Use string.h, not gdb_string.h.
* i386-linux-tdep.c: Use string.h, not gdb_string.h.
* i386-nto-tdep.c: Use string.h, not gdb_string.h.
* i386-sol2-tdep.c: Use string.h, not gdb_string.h.
* i386-tdep.c: Use string.h, not gdb_string.h.
* i386bsd-tdep.c: Use string.h, not gdb_string.h.
* i386gnu-nat.c: Use string.h, not gdb_string.h.
* i386nbsd-tdep.c: Use string.h, not gdb_string.h.
* i386obsd-tdep.c: Use string.h, not gdb_string.h.
* i387-tdep.c: Use string.h, not gdb_string.h.
* ia64-libunwind-tdep.c: Use string.h, not gdb_string.h.
* ia64-linux-nat.c: Use string.h, not gdb_string.h.
* inf-child.c: Use string.h, not gdb_string.h.
* inf-ptrace.c: Use string.h, not gdb_string.h.
* inf-ttrace.c: Use string.h, not gdb_string.h.
* infcall.c: Use string.h, not gdb_string.h.
* infcmd.c: Use string.h, not gdb_string.h.
* inflow.c: Use string.h, not gdb_string.h.
* infrun.c: Use string.h, not gdb_string.h.
* interps.c: Use string.h, not gdb_string.h.
* iq2000-tdep.c: Use string.h, not gdb_string.h.
* irix5-nat.c: Use string.h, not gdb_string.h.
* jv-exp.y: Use string.h, not gdb_string.h.
* jv-lang.c: Use string.h, not gdb_string.h.
* jv-typeprint.c: Use string.h, not gdb_string.h.
* jv-valprint.c: Use string.h, not gdb_string.h.
* language.c: Use string.h, not gdb_string.h.
* linux-fork.c: Use string.h, not gdb_string.h.
* linux-nat.c: Use string.h, not gdb_string.h.
* lm32-tdep.c: Use string.h, not gdb_string.h.
* m2-exp.y: Use string.h, not gdb_string.h.
* m2-typeprint.c: Use string.h, not gdb_string.h.
* m32c-tdep.c: Use string.h, not gdb_string.h.
* m32r-linux-nat.c: Use string.h, not gdb_string.h.
* m32r-linux-tdep.c: Use string.h, not gdb_string.h.
* m32r-rom.c: Use string.h, not gdb_string.h.
* m32r-tdep.c: Use string.h, not gdb_string.h.
* m68hc11-tdep.c: Use string.h, not gdb_string.h.
* m68k-tdep.c: Use string.h, not gdb_string.h.
* m68kbsd-tdep.c: Use string.h, not gdb_string.h.
* m68klinux-nat.c: Use string.h, not gdb_string.h.
* m68klinux-tdep.c: Use string.h, not gdb_string.h.
* m88k-tdep.c: Use string.h, not gdb_string.h.
* macrocmd.c: Use string.h, not gdb_string.h.
* main.c: Use string.h, not gdb_string.h.
* mdebugread.c: Use string.h, not gdb_string.h.
* mem-break.c: Use string.h, not gdb_string.h.
* memattr.c: Use string.h, not gdb_string.h.
* memory-map.c: Use string.h, not gdb_string.h.
* mep-tdep.c: Use string.h, not gdb_string.h.
* mi/mi-cmd-break.c: Use string.h, not gdb_string.h.
* mi/mi-cmd-disas.c: Use string.h, not gdb_string.h.
* mi/mi-cmd-env.c: Use string.h, not gdb_string.h.
* mi/mi-cmd-stack.c: Use string.h, not gdb_string.h.
* mi/mi-cmd-var.c: Use string.h, not gdb_string.h.
* mi/mi-cmds.c: Use string.h, not gdb_string.h.
* mi/mi-console.c: Use string.h, not gdb_string.h.
* mi/mi-getopt.c: Use string.h, not gdb_string.h.
* mi/mi-interp.c: Use string.h, not gdb_string.h.
* mi/mi-main.c: Use string.h, not gdb_string.h.
* mi/mi-parse.c: Use string.h, not gdb_string.h.
* microblaze-rom.c: Use string.h, not gdb_string.h.
* microblaze-tdep.c: Use string.h, not gdb_string.h.
* mingw-hdep.c: Use string.h, not gdb_string.h.
* minidebug.c: Use string.h, not gdb_string.h.
* minsyms.c: Use string.h, not gdb_string.h.
* mips-irix-tdep.c: Use string.h, not gdb_string.h.
* mips-linux-tdep.c: Use string.h, not gdb_string.h.
* mips-tdep.c: Use string.h, not gdb_string.h.
* mips64obsd-tdep.c: Use string.h, not gdb_string.h.
* mipsnbsd-tdep.c: Use string.h, not gdb_string.h.
* mipsread.c: Use string.h, not gdb_string.h.
* mn10300-linux-tdep.c: Use string.h, not gdb_string.h.
* mn10300-tdep.c: Use string.h, not gdb_string.h.
* monitor.c: Use string.h, not gdb_string.h.
* moxie-tdep.c: Use string.h, not gdb_string.h.
* mt-tdep.c: Use string.h, not gdb_string.h.
* nbsd-tdep.c: Use string.h, not gdb_string.h.
* nios2-linux-tdep.c: Use string.h, not gdb_string.h.
* nto-procfs.c: Use string.h, not gdb_string.h.
* nto-tdep.c: Use string.h, not gdb_string.h.
* objc-lang.c: Use string.h, not gdb_string.h.
* objfiles.c: Use string.h, not gdb_string.h.
* opencl-lang.c: Use string.h, not gdb_string.h.
* osabi.c: Use string.h, not gdb_string.h.
* osdata.c: Use string.h, not gdb_string.h.
* p-exp.y: Use string.h, not gdb_string.h.
* p-lang.c: Use string.h, not gdb_string.h.
* p-typeprint.c: Use string.h, not gdb_string.h.
* parse.c: Use string.h, not gdb_string.h.
* posix-hdep.c: Use string.h, not gdb_string.h.
* ppc-linux-nat.c: Use string.h, not gdb_string.h.
* ppc-sysv-tdep.c: Use string.h, not gdb_string.h.
* ppcfbsd-tdep.c: Use string.h, not gdb_string.h.
* ppcnbsd-tdep.c: Use string.h, not gdb_string.h.
* ppcobsd-tdep.c: Use string.h, not gdb_string.h.
* printcmd.c: Use string.h, not gdb_string.h.
* procfs.c: Use string.h, not gdb_string.h.
* prologue-value.c: Use string.h, not gdb_string.h.
* python/py-auto-load.c: Use string.h, not gdb_string.h.
* python/py-gdb-readline.c: Use string.h, not gdb_string.h.
* ravenscar-thread.c: Use string.h, not gdb_string.h.
* regcache.c: Use string.h, not gdb_string.h.
* registry.c: Use string.h, not gdb_string.h.
* remote-fileio.c: Use string.h, not gdb_string.h.
* remote-m32r-sdi.c: Use string.h, not gdb_string.h.
* remote-mips.c: Use string.h, not gdb_string.h.
* remote-sim.c: Use string.h, not gdb_string.h.
* remote.c: Use string.h, not gdb_string.h.
* reverse.c: Use string.h, not gdb_string.h.
* rs6000-aix-tdep.c: Use string.h, not gdb_string.h.
* ser-base.c: Use string.h, not gdb_string.h.
* ser-go32.c: Use string.h, not gdb_string.h.
* ser-mingw.c: Use string.h, not gdb_string.h.
* ser-pipe.c: Use string.h, not gdb_string.h.
* ser-tcp.c: Use string.h, not gdb_string.h.
* ser-unix.c: Use string.h, not gdb_string.h.
* serial.c: Use string.h, not gdb_string.h.
* sh-tdep.c: Use string.h, not gdb_string.h.
* sh64-tdep.c: Use string.h, not gdb_string.h.
* shnbsd-tdep.c: Use string.h, not gdb_string.h.
* skip.c: Use string.h, not gdb_string.h.
* sol-thread.c: Use string.h, not gdb_string.h.
* solib-dsbt.c: Use string.h, not gdb_string.h.
* solib-frv.c: Use string.h, not gdb_string.h.
* solib-osf.c: Use string.h, not gdb_string.h.
* solib-spu.c: Use string.h, not gdb_string.h.
* solib-target.c: Use string.h, not gdb_string.h.
* solib.c: Use string.h, not gdb_string.h.
* somread.c: Use string.h, not gdb_string.h.
* source.c: Use string.h, not gdb_string.h.
* sparc-nat.c: Use string.h, not gdb_string.h.
* sparc-sol2-tdep.c: Use string.h, not gdb_string.h.
* sparc-tdep.c: Use string.h, not gdb_string.h.
* sparc64-tdep.c: Use string.h, not gdb_string.h.
* sparc64fbsd-tdep.c: Use string.h, not gdb_string.h.
* sparc64nbsd-tdep.c: Use string.h, not gdb_string.h.
* sparcnbsd-tdep.c: Use string.h, not gdb_string.h.
* spu-linux-nat.c: Use string.h, not gdb_string.h.
* spu-multiarch.c: Use string.h, not gdb_string.h.
* spu-tdep.c: Use string.h, not gdb_string.h.
* stabsread.c: Use string.h, not gdb_string.h.
* stack.c: Use string.h, not gdb_string.h.
* std-regs.c: Use string.h, not gdb_string.h.
* symfile.c: Use string.h, not gdb_string.h.
* symmisc.c: Use string.h, not gdb_string.h.
* symtab.c: Use string.h, not gdb_string.h.
* target.c: Use string.h, not gdb_string.h.
* thread.c: Use string.h, not gdb_string.h.
* tilegx-linux-nat.c: Use string.h, not gdb_string.h.
* tilegx-tdep.c: Use string.h, not gdb_string.h.
* top.c: Use string.h, not gdb_string.h.
* tracepoint.c: Use string.h, not gdb_string.h.
* tui/tui-command.c: Use string.h, not gdb_string.h.
* tui/tui-data.c: Use string.h, not gdb_string.h.
* tui/tui-disasm.c: Use string.h, not gdb_string.h.
* tui/tui-file.c: Use string.h, not gdb_string.h.
* tui/tui-layout.c: Use string.h, not gdb_string.h.
* tui/tui-out.c: Use string.h, not gdb_string.h.
* tui/tui-regs.c: Use string.h, not gdb_string.h.
* tui/tui-source.c: Use string.h, not gdb_string.h.
* tui/tui-stack.c: Use string.h, not gdb_string.h.
* tui/tui-win.c: Use string.h, not gdb_string.h.
* tui/tui-windata.c: Use string.h, not gdb_string.h.
* tui/tui-winsource.c: Use string.h, not gdb_string.h.
* typeprint.c: Use string.h, not gdb_string.h.
* ui-file.c: Use string.h, not gdb_string.h.
* ui-out.c: Use string.h, not gdb_string.h.
* user-regs.c: Use string.h, not gdb_string.h.
* utils.c: Use string.h, not gdb_string.h.
* v850-tdep.c: Use string.h, not gdb_string.h.
* valarith.c: Use string.h, not gdb_string.h.
* valops.c: Use string.h, not gdb_string.h.
* valprint.c: Use string.h, not gdb_string.h.
* value.c: Use string.h, not gdb_string.h.
* varobj.c: Use string.h, not gdb_string.h.
* vax-tdep.c: Use string.h, not gdb_string.h.
* vaxnbsd-tdep.c: Use string.h, not gdb_string.h.
* vaxobsd-tdep.c: Use string.h, not gdb_string.h.
* windows-nat.c: Use string.h, not gdb_string.h.
* xcoffread.c: Use string.h, not gdb_string.h.
* xml-support.c: Use string.h, not gdb_string.h.
* xstormy16-tdep.c: Use string.h, not gdb_string.h.
* xtensa-linux-nat.c: Use string.h, not gdb_string.h.
2013-11-06 22:14:23 +08:00
|
|
|
|
#include <string.h>
|
1999-04-16 09:35:26 +08:00
|
|
|
|
#include "elf-bfd.h"
|
2007-06-18 23:46:38 +08:00
|
|
|
|
#include "elf/common.h"
|
|
|
|
|
|
#include "elf/internal.h"
|
1999-04-16 09:35:26 +08:00
|
|
|
|
#include "elf/mips.h"
|
|
|
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|
#include "symtab.h"
|
|
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|
#include "symfile.h"
|
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|
#include "objfiles.h"
|
|
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|
#include "buildsym.h"
|
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|
#include "stabsread.h"
|
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|
#include "gdb-stabs.h"
|
|
|
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|
|
#include "complaints.h"
|
|
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|
|
|
#include "demangle.h"
|
gdb
* xcoffread.c: Include psymtab.h.
(xcoff_sym_fns): Update.
* symtab.h (struct partial_symbol): Remove.
(PSYMBOL_DOMAIN, PSYMBOL_CLASS): Remove.
(struct partial_symtab): Remove.
(PSYMTAB_TO_SYMTAB): Remove.
(lookup_partial_symbol, lookup_partial_symtab, find_pc_psymtab)
(find_pc_sect_psymtab): Remove.
(find_pc_sect_symtab_via_partial): Declare.
(find_pc_psymtab, find_pc_sect_psymbol, psymtab_to_symtab)
(find_main_psymtab): Remove.
(find_main_filename): Declare.
(fixup_psymbol_section): Remove.
(fixup_section): Declare.
* symtab.c: Include psymtab.h.
(lookup_symtab): Use lookup_symtab method.
(lookup_partial_symtab): Remove.
(find_pc_sect_psymtab_closer): Remove.
(find_pc_sect_psymtab): Remove.
(find_pc_sect_symtab_via_partial): New function.
(find_pc_psymtab, find_pc_sect_psymbol, find_pc_psymbol): Remove.
(fixup_section): No longer static.
(fixup_psymbol_section): Remove.
(lookup_symbol_aux): Use lookup_symbol_aux_quick.
(lookup_global_symbol_from_objfile): Likewise.
(lookup_symbol_aux_psymtabs): Remove.
(lookup_symbol_aux_quick): New function.
(lookup_symbol_global): Use lookup_symbol_aux_quick.
(lookup_partial_symbol): Remove.
(basic_lookup_transparent_type_quick): New function.
(basic_lookup_transparent_type): Use it.
(find_main_psymtab): Remove.
(find_main_filename): New function.
(find_pc_sect_symtab): Use find_pc_sect_symtab method.
(find_line_symtab): Use expand_symtabs_with_filename method.
(output_partial_symbol_filename): New function.
(sources_info): Use map_partial_symbol_filenames.
(struct search_symbols_data): New type.
(search_symbols_file_matches): New function.
(search_symbols_name_matches): Likewise.
(search_symbols): Use expand_symtabs_matching method.
(struct add_name_data): Rename from add_macro_name_data.
(add_macro_name): Update.
(add_partial_symbol_name): New function.
(default_make_symbol_completion_list): Use
map_partial_symbol_names.
(struct add_partial_symbol_name): New type.
(maybe_add_partial_symtab_filename): New function.
(make_source_files_completion_list): Use
map_partial_symbol_filenames.
(expand_line_sal): Use expand_symtabs_with_filename method.
* symmisc.c: Include psymtab.h.
(print_objfile_statistics): Use print_stats method.
(dump_objfile): Use dump method.
(dump_psymtab, maintenance_print_psymbols)
(maintenance_info_psymtabs, maintenance_check_symtabs)
(extend_psymbol_list): Remove.
* symfile.h (struct quick_symbol_functions): New struct.
(struct sym_fns) <qf>: New field.
(sort_pst_symbols): Remove.
(increment_reading_symtab): Declare.
* symfile.c: Include psymtab.h.
(compare_psymbols, sort_pst_symbols): Remove.
(psymtab_to_symtab): Remove.
(increment_reading_symtab): New function.
(symbol_file_add_with_addrs_or_offsets): Use expand_all_symtabs
method.
(set_initial_language): Use find_main_filename.
(allocate_psymtab, discard_psymtab, cashier_psymtab): Remove.
(free_named_symtabs): Remove unused code.
(start_psymtab_common, add_psymbol_to_bcache)
(append_psymbol_to_list, add_psymbol_to_list, init_psymbol_list):
Remove.
* stack.c: Include psymtab.h, symfile.h.
(backtrace_command_1): Use find_pc_sect_symtab_via_partial.
* source.h (psymtab_to_fullname): Don't declare.
* source.c: Include psymtab.h.
(select_source_symtab): Use find_last_source_symtab method.
(forget_cached_source_info): Use forget_cached_source_info
method.
(find_and_open_source): No longer static.
(psymtab_to_fullname): Remove.
* somread.c: Include psymtab.h.
(som_sym_fns): Update.
* psympriv.h: New file.
* psymtab.h: New file.
* psymtab.c: New file.
* objfiles.h: (ALL_OBJFILE_PSYMTABS): Remove.
(ALL_PSYMTABS, ALL_PSPACE_PSYMTABS): Likewise.
* objfiles.c: Include psymtab.h.
(objfile_relocate1): Use relocate method.
(objfile_has_partial_symbols): Use has_symbols method.
* mipsread.c: Include psymtab.h.
(ecoff_sym_fns): Update.
* mi/mi-cmd-file.c: Include psymtab.h.
(print_partial_file_name): New function.
(mi_cmd_file_list_exec_source_files): Use
map_partial_symbol_filenames.
* mdebugread.c: Include psympriv.h.
* machoread.c: Include psympriv.h.
(macho_sym_fns): Update.
* m2-exp.y (yylex): Use lookup_symtab.
* elfread.c: Include psympriv.h.
(elf_sym_fns): Update.
* dwarf2read.c: Include psympriv.h.
* dbxread.c: Include psympriv.h.
(aout_sym_fns): Update.
* cp-support.c: Include psymtab.h.
(read_in_psymtabs): Remove.
(make_symbol_overload_list_qualified): Use
expand_symtabs_for_function method.
* coffread.c: Include psympriv.h.
(coff_sym_fns): Update.
* blockframe.c: Include psymtab.h.
(find_pc_partial_function): Use find_pc_sect_symtab method.
* ada-lang.h (ada_update_initial_language): Update.
* ada-lang.c: Include psymtab.h.
(ada_update_initial_language): Remove 'main_pst' argument.
(ada_lookup_partial_symbol): Remove.
(struct ada_psym_data): New type.
(ada_add_psyms): New function.
(ada_add_non_local_symbols): Use map_ada_symtabs method.
(struct add_partial_datum): New type.
(ada_add_partial_symbol_completions): New function.
(ada_make_symbol_completion_list): Use map_partial_symbol_names.
(ada_exception_support_info_sniffer): Update.
* Makefile.in (SFILES): Add psymtab.c.
(COMMON_OBS): Add psymtab.o.
(HFILES_NO_SRCDIR): Add psymtab.h, psympriv.h.
gdb/doc
* gdbint.texinfo (Symbol Handling): Update.
2010-03-11 02:20:08 +08:00
|
|
|
|
#include "psympriv.h"
|
2011-03-24 02:23:56 +08:00
|
|
|
|
#include "filenames.h"
|
2012-04-28 04:47:57 +08:00
|
|
|
|
#include "probe.h"
|
|
|
|
|
|
#include "arch-utils.h"
|
gdb/
STT_GNU_IFUNC reader implementation.
* elfread.c: Include gdbtypes.h, value.h and infcall.h.
(SYMBOL_GOT_PLT_SUFFIX, elf_rel_plt_read)
(elf_objfile_gnu_ifunc_cache_data, struct elf_gnu_ifunc_cache)
(elf_gnu_ifunc_cache_hash, elf_gnu_ifunc_cache_eq)
(elf_gnu_ifunc_record_cache, elf_gnu_ifunc_resolve_by_cache)
(elf_gnu_ifunc_resolve_by_got, elf_gnu_ifunc_resolve_name)
(elf_gnu_ifunc_resolve_addr): New.
(elf_symfile_read): Call elf_rel_plt_read.
(elf_gnu_ifunc_fns): New.
(_initialize_elfread): Initialize elf_objfile_gnu_ifunc_cache_data.
Install elf_gnu_ifunc_fns.
* infcall.c (find_function_return_type): New function.
(find_function_addr): Resolve TYPE_GNU_IFUNC functions, if possible.
* minsyms.c (stub_gnu_ifunc_resolve_addr)
(stub_gnu_ifunc_resolve_name): New functions.
(stub_gnu_ifunc_fns, gnu_ifunc_fns_p): New variables.
* symtab.h (struct gnu_ifunc_fns, gnu_ifunc_resolve_addr)
(gnu_ifunc_resolve_name, gnu_ifunc_fns_p): New.
2011-03-29 04:26:24 +08:00
|
|
|
|
#include "gdbtypes.h"
|
|
|
|
|
|
#include "value.h"
|
|
|
|
|
|
#include "infcall.h"
|
2011-03-29 04:29:51 +08:00
|
|
|
|
#include "gdbthread.h"
|
|
|
|
|
|
#include "regcache.h"
|
2011-12-22 05:30:31 +08:00
|
|
|
|
#include "bcache.h"
|
* dwarf2read.c (try_open_dwo_file): Use gdb_bfd_ref and
gdb_bfd_unref.
(free_dwo_file): Use gdb_bfd_unref.
* cli/cli-dump.c: Include gdb_bfd.h.
(bfd_openw_with_cleanup): Use gdb_bfd_ref.
(bfd_openr_with_cleanup): Likewise.
* windows-nat.c (windows_make_so): Use gdb_bfd_ref,
gdb_bfd_unref.
* utils.c: Include gdb_bfd.h.
(do_bfd_close_cleanup): Use gdb_bfd_unref.
* symfile.c: Include gdb_bfd.h.
(separate_debug_file_exists): Use gdb_bfd_unref.
(bfd_open_maybe_remote): Use gdb_bfd_ref.
(symfile_bfd_open): Use gdb_bfd_ref, gdb_bfd_unref.
(generic_load): Use gdb_bfd_ref.
(reread_symbols): Use gdb_bfd_unref.
* symfile-mem.c: Include gdb_bfd.h.
(symbol_file_add_from_memory): Use make_cleanup_bfd_close.
* spu-linux-nat.c (spu_bfd_open): Use gdb_bfd_ref, gdb_bfd_unref.
* solib.c: Include gdb_bfd.h.
(solib_bfd_fopen): Use gdb_bfd_ref.
(solib_bfd_open): Use gdb_bfd_unref.
(free_so_symbols): Use gdb_bfd_unref.
(reload_shared_libraries_1): Use gdb_bfd_unref.
* solib-spu.c: Include gdb_bfd.h.
(spu_bfd_fopen): Use gdb_bfd_ref, gdb_bfd_unref.
* solib-pa64.c (pa64_solib_create_inferior_hook): Use gdb_bfd_ref,
gdb_bfd_unref.
* solib-frv.c: Include gdb_bfd.h.
(enable_break2): Use gdb_bfd_unref.
* solib-dsbt.c: Include gdb_bfd.h.
(enable_break2): Use gdb_bfd_unref.
* solib-darwin.c: Include gdb_bfd.h.
(darwin_solib_get_all_image_info_addr_at_init): Use gdb_bfd_ref,
gdb_bfd_unref.
(darwin_bfd_open): Use gdb_bfd_unref.
* rs6000-nat.c (add_vmap): Use gdb_bfd_ref, gdb_bfd_unref.
* remote-mips.c: Include gdb_bfd.h.
(mips_load_srec): Use gdb_bfd_ref.
(pmon_load_fast): Use gdb_bfd_ref.
* remote-m32r-sdi.c: Include gdb_bfd.h.
(m32r_load): Use gdb_bfd_ref.
* record.c: Include gdb_bfd.h.
(record_save_cleanups): Use gdb_bfd_unref.
(cmd_record_save): Use gdb_bfd_unref.
* procfs.c (insert_dbx_link_bpt_in_file): Use gdb_bfd_ref,
gdb_bfd_unref.
* objfiles.h (gdb_bfd_close_or_warn): Remove.
(gdb_bfd_ref, gdb_bfd_unref): Move to gdb_bfd.h.
* objfiles.c: Include gdb_bfd.h.
(free_objfile): Use gdb_bfd_unref.
(gdb_bfd_close_or_warn, gdb_bfd_ref, gdb_bfd_unref): Move to
gdb_bfd.c.
* machoread.c (macho_add_oso_symfile): Use gdb_bfd_unref.
(macho_symfile_read_all_oso): Use gdb_bfd_ref, gdb_bfd_unref.
(macho_check_dsym): Likewise.
* m32r-rom.c: Include gdb_bfd.h.
(m32r_load): Use gdb_bfd_ref.
(m32r_upload_command): Use gdb_bfd_ref.
* jit.c: Include gdb_bfd.h.
(jit_bfd_try_read_symtab): Use gdb_bfd_ref, gdb_bfd_unref.
* gdb_bfd.h: New file.
* gdb_bfd.c: New file.
* gcore.c: Include gdb_bfd.h.
(create_gcore_bfd): Use gdb_bfd_ref.
(do_bfd_delete_cleanup): Use gdb_bfd_unref.
(gcore_command): Use gdb_bfd_unref.
* exec.c: Include gdb_bfd.h.
(exec_close): Use gdb_bfd_unref.
(exec_close_1): Use gdb_bfd_unref.
(exec_file_attach): Use gdb_bfd_ref.
* elfread.c: Include gdb_bfd.h.
(build_id_verify): Use gdb_bfd_unref.
* dsrec.c: Include gdb_bfd.h.
(load_srec): Use gdb_bfd_ref.
* corelow.c: Include gdb_bfd.h.
(core_close): Use gdb_bfd_unref.
(core_open): Use gdb_bfd_ref.
* bfd-target.c: Include gdb_bfd.h.
(target_bfd_xclose): Use gdb_bfd_unref.
(target_bfd_reopen): Use gdb_bfd_ref.
* Makefile.in (SFILES): Add gdb_bfd.c.
(HFILES_NO_SRCDIR): Add gdb_bfd.h.
(COMMON_OBS): Add gdb_bfd.o.
2012-07-19 03:33:34 +08:00
|
|
|
|
#include "gdb_bfd.h"
|
fix PR symtab/15597
This patch fixes gdb PR symtab/15597.
The bug is that the .gnu_debugaltlink section includes the build-id of
the alt file, but gdb does not use it.
This patch fixes the problem by changing gdb to do what it ought to
always have done: verify the build id of the file found using the
filename in .gnu_debugaltlink; and if that does not match, try to find
the correct debug file using the build-id and debug-file-directory.
This patch touches BFD. Previously, gdb had its own code for parsing
.gnu_debugaltlink; I changed it to use the BFD functions after those
were introduced. However, the BFD functions are incorrect -- they
assume that .gnu_debugaltlink is formatted like .gnu_debuglink.
However, it it is not. Instead, it consists of a file name followed
by the build-id -- no alignment, and the build-id is not a CRC.
Fixing this properly is a bit of a pain. But, because
separate_alt_debug_file_exists just has a FIXME for the build-id case,
I did not fix it properly. Instead I introduced a hack. This leaves
BFD working just as well as it did before my patch.
I'm willing to do something better here but I could use some guidance
as to what. It seems that the build-id code in BFD is largely punted
on.
FWIW gdb is the only user of bfd_get_alt_debug_link_info outside of
BFD itself.
I moved the build-id logic out of elfread.c and into a new file.
This seemed cleanest to me.
Writing a test case was a bit of a pain. I added a couple new
features to the DWARF assembler to handle this.
Built and regtested on x86-64 Fedora 18.
* bfd-in2.h: Rebuild.
* opncls.c (bfd_get_alt_debug_link_info): Add buildid_len
parameter. Change type of buildid_out. Update.
(get_alt_debug_link_info_shim): New function.
(bfd_follow_gnu_debuglink): Use it.
* Makefile.in (SFILES): Add build-id.c.
(HFILES_NO_SRCDIR): Add build-id.h.
* build-id.c: New file, largely from elfread.c. Modified
most functions.
* build-id.h: New file.
* dwarf2read.c (dwarf2_get_dwz_file): Update for change to
bfd_get_alt_debug_link_info. Verify dwz file's build-id.
Search for dwz file using build-id.
* elfread.c (build_id_bfd_get, build_id_verify)
(build_id_to_debug_filename, find_separate_debug_file): Remove.
* gdb.dwarf2/dwzbuildid.exp: New file.
* lib/dwarf.exp (Dwarf::_section): Add "flags" and "type"
parameters.
(Dwarf::_defer_output): Change "section" parameter to
"section_spec"; update.
(Dwarf::gnu_debugaltlink, Dwarf::_note, Dwarf::build_id): New
procs.
2013-10-09 03:56:15 +08:00
|
|
|
|
#include "build-id.h"
|
1999-04-16 09:35:26 +08:00
|
|
|
|
|
2000-05-28 09:12:42 +08:00
|
|
|
|
extern void _initialize_elfread (void);
|
1999-05-26 02:09:09 +08:00
|
|
|
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|
2011-03-08 00:17:29 +08:00
|
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|
|
/* Forward declarations. */
|
2010-10-01 03:14:30 +08:00
|
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|
|
static const struct sym_fns elf_sym_fns_gdb_index;
|
2011-03-08 00:17:29 +08:00
|
|
|
|
static const struct sym_fns elf_sym_fns_lazy_psyms;
|
2010-07-14 04:51:34 +08:00
|
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|
1999-04-16 09:35:26 +08:00
|
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|
|
/* The struct elfinfo is available only during ELF symbol table and
|
1999-09-29 05:55:21 +08:00
|
|
|
|
psymtab reading. It is destroyed at the completion of psymtab-reading.
|
1999-04-16 09:35:26 +08:00
|
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|
|
It's local to elf_symfile_read. */
|
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|
1999-07-08 04:19:36 +08:00
|
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|
|
struct elfinfo
|
|
|
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|
|
{
|
|
|
|
|
|
asection *stabsect; /* Section pointer for .stab section */
|
|
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|
|
asection *mdebugsect; /* Section pointer for .mdebug section */
|
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|
};
|
1999-04-16 09:35:26 +08:00
|
|
|
|
|
2012-04-28 04:47:57 +08:00
|
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|
|
/* Per-objfile data for probe info. */
|
|
|
|
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|
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|
|
static const struct objfile_data *probe_key = NULL;
|
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|
|
2002-03-20 03:00:04 +08:00
|
|
|
|
static void free_elfinfo (void *);
|
1999-04-16 09:35:26 +08:00
|
|
|
|
|
gdb/
STT_GNU_IFUNC reader implementation.
* elfread.c: Include gdbtypes.h, value.h and infcall.h.
(SYMBOL_GOT_PLT_SUFFIX, elf_rel_plt_read)
(elf_objfile_gnu_ifunc_cache_data, struct elf_gnu_ifunc_cache)
(elf_gnu_ifunc_cache_hash, elf_gnu_ifunc_cache_eq)
(elf_gnu_ifunc_record_cache, elf_gnu_ifunc_resolve_by_cache)
(elf_gnu_ifunc_resolve_by_got, elf_gnu_ifunc_resolve_name)
(elf_gnu_ifunc_resolve_addr): New.
(elf_symfile_read): Call elf_rel_plt_read.
(elf_gnu_ifunc_fns): New.
(_initialize_elfread): Initialize elf_objfile_gnu_ifunc_cache_data.
Install elf_gnu_ifunc_fns.
* infcall.c (find_function_return_type): New function.
(find_function_addr): Resolve TYPE_GNU_IFUNC functions, if possible.
* minsyms.c (stub_gnu_ifunc_resolve_addr)
(stub_gnu_ifunc_resolve_name): New functions.
(stub_gnu_ifunc_fns, gnu_ifunc_fns_p): New variables.
* symtab.h (struct gnu_ifunc_fns, gnu_ifunc_resolve_addr)
(gnu_ifunc_resolve_name, gnu_ifunc_fns_p): New.
2011-03-29 04:26:24 +08:00
|
|
|
|
/* Minimal symbols located at the GOT entries for .plt - that is the real
|
|
|
|
|
|
pointer where the given entry will jump to. It gets updated by the real
|
|
|
|
|
|
function address during lazy ld.so resolving in the inferior. These
|
|
|
|
|
|
minimal symbols are indexed for <tab>-completion. */
|
|
|
|
|
|
|
|
|
|
|
|
#define SYMBOL_GOT_PLT_SUFFIX "@got.plt"
|
|
|
|
|
|
|
2007-06-18 23:46:38 +08:00
|
|
|
|
/* Locate the segments in ABFD. */
|
|
|
|
|
|
|
|
|
|
|
|
static struct symfile_segment_data *
|
|
|
|
|
|
elf_symfile_segments (bfd *abfd)
|
|
|
|
|
|
{
|
|
|
|
|
|
Elf_Internal_Phdr *phdrs, **segments;
|
|
|
|
|
|
long phdrs_size;
|
|
|
|
|
|
int num_phdrs, num_segments, num_sections, i;
|
|
|
|
|
|
asection *sect;
|
|
|
|
|
|
struct symfile_segment_data *data;
|
|
|
|
|
|
|
|
|
|
|
|
phdrs_size = bfd_get_elf_phdr_upper_bound (abfd);
|
|
|
|
|
|
if (phdrs_size == -1)
|
|
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
|
|
|
|
phdrs = alloca (phdrs_size);
|
|
|
|
|
|
num_phdrs = bfd_get_elf_phdrs (abfd, phdrs);
|
|
|
|
|
|
if (num_phdrs == -1)
|
|
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
|
|
|
|
num_segments = 0;
|
|
|
|
|
|
segments = alloca (sizeof (Elf_Internal_Phdr *) * num_phdrs);
|
|
|
|
|
|
for (i = 0; i < num_phdrs; i++)
|
|
|
|
|
|
if (phdrs[i].p_type == PT_LOAD)
|
|
|
|
|
|
segments[num_segments++] = &phdrs[i];
|
|
|
|
|
|
|
|
|
|
|
|
if (num_segments == 0)
|
|
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
|
|
|
|
data = XZALLOC (struct symfile_segment_data);
|
|
|
|
|
|
data->num_segments = num_segments;
|
|
|
|
|
|
data->segment_bases = XCALLOC (num_segments, CORE_ADDR);
|
|
|
|
|
|
data->segment_sizes = XCALLOC (num_segments, CORE_ADDR);
|
|
|
|
|
|
|
|
|
|
|
|
for (i = 0; i < num_segments; i++)
|
|
|
|
|
|
{
|
|
|
|
|
|
data->segment_bases[i] = segments[i]->p_vaddr;
|
|
|
|
|
|
data->segment_sizes[i] = segments[i]->p_memsz;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
num_sections = bfd_count_sections (abfd);
|
|
|
|
|
|
data->segment_info = XCALLOC (num_sections, int);
|
|
|
|
|
|
|
|
|
|
|
|
for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next)
|
|
|
|
|
|
{
|
|
|
|
|
|
int j;
|
|
|
|
|
|
CORE_ADDR vma;
|
|
|
|
|
|
|
|
|
|
|
|
if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0)
|
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
|
|
vma = bfd_get_section_vma (abfd, sect);
|
|
|
|
|
|
|
|
|
|
|
|
for (j = 0; j < num_segments; j++)
|
|
|
|
|
|
if (segments[j]->p_memsz > 0
|
|
|
|
|
|
&& vma >= segments[j]->p_vaddr
|
2008-07-21 13:05:23 +08:00
|
|
|
|
&& (vma - segments[j]->p_vaddr) < segments[j]->p_memsz)
|
2007-06-18 23:46:38 +08:00
|
|
|
|
{
|
|
|
|
|
|
data->segment_info[i] = j + 1;
|
|
|
|
|
|
break;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
2009-11-03 01:16:14 +08:00
|
|
|
|
/* We should have found a segment for every non-empty section.
|
|
|
|
|
|
If we haven't, we will not relocate this section by any
|
|
|
|
|
|
offsets we apply to the segments. As an exception, do not
|
|
|
|
|
|
warn about SHT_NOBITS sections; in normal ELF execution
|
|
|
|
|
|
environments, SHT_NOBITS means zero-initialized and belongs
|
|
|
|
|
|
in a segment, but in no-OS environments some tools (e.g. ARM
|
|
|
|
|
|
RealView) use SHT_NOBITS for uninitialized data. Since it is
|
|
|
|
|
|
uninitialized, it doesn't need a program header. Such
|
|
|
|
|
|
binaries are not relocatable. */
|
|
|
|
|
|
if (bfd_get_section_size (sect) > 0 && j == num_segments
|
|
|
|
|
|
&& (bfd_get_section_flags (abfd, sect) & SEC_LOAD) != 0)
|
2012-02-21 14:44:13 +08:00
|
|
|
|
warning (_("Loadable section \"%s\" outside of ELF segments"),
|
2007-06-18 23:46:38 +08:00
|
|
|
|
bfd_section_name (abfd, sect));
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
return data;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
1999-04-16 09:35:26 +08:00
|
|
|
|
/* We are called once per section from elf_symfile_read. We
|
|
|
|
|
|
need to examine each section we are passed, check to see
|
|
|
|
|
|
if it is something we are interested in processing, and
|
|
|
|
|
|
if so, stash away some access information for the section.
|
|
|
|
|
|
|
|
|
|
|
|
For now we recognize the dwarf debug information sections and
|
|
|
|
|
|
line number sections from matching their section names. The
|
|
|
|
|
|
ELF definition is no real help here since it has no direct
|
|
|
|
|
|
knowledge of DWARF (by design, so any debugging format can be
|
|
|
|
|
|
used).
|
|
|
|
|
|
|
|
|
|
|
|
We also recognize the ".stab" sections used by the Sun compilers
|
|
|
|
|
|
released with Solaris 2.
|
|
|
|
|
|
|
|
|
|
|
|
FIXME: The section names should not be hardwired strings (what
|
|
|
|
|
|
should they be? I don't think most object file formats have enough
|
2011-01-08 03:36:19 +08:00
|
|
|
|
section flags to specify what kind of debug section it is.
|
1999-04-16 09:35:26 +08:00
|
|
|
|
-kingdon). */
|
|
|
|
|
|
|
|
|
|
|
|
static void
|
2002-03-20 03:00:04 +08:00
|
|
|
|
elf_locate_sections (bfd *ignore_abfd, asection *sectp, void *eip)
|
1999-04-16 09:35:26 +08:00
|
|
|
|
{
|
2003-09-14 Andrew Cagney <cagney@redhat.com>
* alpha-nat.c: Remove some occurances of "register".
* alpha-tdep.c, arm-tdep.c, blockframe.c, breakpoint.c: Ditto.
* buildsym.c, c-typeprint.c, c-valprint.c, coffread.c: Ditto.
* corefile.c, cp-support.c, cp-valprint.c, cris-tdep.c: Ditto.
* dbxread.c, dcache.c, dwarf2read.c, elfread.c: Ditto.
* environ.c, eval.c, event-top.c, f-typeprint.c: Ditto.
* f-valprint.c, findvar.c, frame.c, gdbtypes.c: Ditto.
* h8300-tdep.c, hppa-tdep.c, hppab-nat.c, hppah-nat.c: Ditto.
* hppam3-nat.c, hpread.c, ia64-aix-nat.c, ia64-linux-nat.c: Ditto.
* infcall.c, infcmd.c, inflow.c, infptrace.c, infrun.c: Ditto.
* infttrace.c, irix5-nat.c, jv-typeprint.c: Ditto.
* jv-valprint.c, m68k-tdep.c, m68klinux-nat.c, main.c: Ditto.
* mdebugread.c, minsyms.c, mips-linux-tdep.c: Ditto.
* mips-nat.c, mips-tdep.c, mipsread.c, mipsv4-nat.c: Ditto.
* ns32k-tdep.c, objfiles.c, p-typeprint.c: Ditto.
* p-valprint.c, ppc-linux-nat.c, printcmd.c: Ditto.
* remote-mips.c, remote-vx.c, rs6000-nat.c: Ditto.
* rs6000-tdep.c, scm-exp.c, sh-tdep.c, sh64-tdep.c: Ditto.
* solib.c, somread.c, source.c, sparc-tdep.c: Ditto.
* stabsread.c, stack.c, standalone.c, symfile.c: Ditto.
* symmisc.c, symtab.c, top.c, tracepoint.c: Ditto.
* typeprint.c, utils.c, valarith.c, valops.c: Ditto.
* values.c, vax-tdep.c, xcoffread.c: Ditto.
2003-09-15 00:32:14 +08:00
|
|
|
|
struct elfinfo *ei;
|
1999-04-16 09:35:26 +08:00
|
|
|
|
|
|
|
|
|
|
ei = (struct elfinfo *) eip;
|
* MAINTAINERS: Remove d10v entry.
* Makefile.in (SFILES): Remove dwarfread.c.
(COMMON_OBS): Remove dwarfread.o.
(gdb_sim_d10v_h, abug-rom.o, cpu32bug-rom.o, d10v-tdep.o, dwarfread.o)
(remote-est.o, rom68k-rom.o): Delete.
* NEWS: Mention removal of d10v, target abug, target cpu32bug,
target est, target rom68k, and DWARF 1.
* configure.tgt: Mark d10v as removed.
* dwarf2read.c: Doc update.
* elfread.c (struct elfinfo): Remove dboffset, dbsize, lnoffset,
and lnsize.
(elf_locate_sections): Do not set them.
(elf_symfile_read): Do not call dwarf_build_psymtabs.
* symfile.h (dwarf_build_psymtabs): Delete prototype.
* config/m68k/monitor.mt (TDEPFILES): Prune.
* abug-rom.c, cpu32bug-rom.c, d10v-tdep.c, dwarfread.c,
remote-est.c, rom68k-rom.c, config/d10v/d10v.mt: Delete.
* gdb.texinfo (M68K): Remove obsolete ROM monitors.
* gdbint.texinfo (DWARF 1): Delete section and other dwarfread.c
references.
* gdb.asm/asm-source.exp: Remove d10v case.
* lib/gdb.exp (skip_cplus_tests): Likewise.
* gdb.asm/d10v.inc: Deleted.
2007-03-31 01:21:48 +08:00
|
|
|
|
if (strcmp (sectp->name, ".stab") == 0)
|
1999-04-16 09:35:26 +08:00
|
|
|
|
{
|
1999-07-08 04:19:36 +08:00
|
|
|
|
ei->stabsect = sectp;
|
1999-04-16 09:35:26 +08:00
|
|
|
|
}
|
2003-11-08 08:13:03 +08:00
|
|
|
|
else if (strcmp (sectp->name, ".mdebug") == 0)
|
1999-04-16 09:35:26 +08:00
|
|
|
|
{
|
1999-07-08 04:19:36 +08:00
|
|
|
|
ei->mdebugsect = sectp;
|
1999-04-16 09:35:26 +08:00
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static struct minimal_symbol *
|
2009-11-17 02:40:23 +08:00
|
|
|
|
record_minimal_symbol (const char *name, int name_len, int copy_name,
|
|
|
|
|
|
CORE_ADDR address,
|
2003-11-12 04:04:52 +08:00
|
|
|
|
enum minimal_symbol_type ms_type,
|
|
|
|
|
|
asection *bfd_section, struct objfile *objfile)
|
1999-04-16 09:35:26 +08:00
|
|
|
|
{
|
2008-03-26 22:53:28 +08:00
|
|
|
|
struct gdbarch *gdbarch = get_objfile_arch (objfile);
|
|
|
|
|
|
|
2011-03-29 04:21:04 +08:00
|
|
|
|
if (ms_type == mst_text || ms_type == mst_file_text
|
|
|
|
|
|
|| ms_type == mst_text_gnu_ifunc)
|
2012-11-21 08:29:55 +08:00
|
|
|
|
address = gdbarch_addr_bits_remove (gdbarch, address);
|
1999-04-16 09:35:26 +08:00
|
|
|
|
|
2009-11-17 02:40:23 +08:00
|
|
|
|
return prim_record_minimal_symbol_full (name, name_len, copy_name, address,
|
2013-04-09 04:04:42 +08:00
|
|
|
|
ms_type,
|
|
|
|
|
|
gdb_bfd_section_index (objfile->obfd,
|
|
|
|
|
|
bfd_section),
|
2013-04-09 04:13:22 +08:00
|
|
|
|
objfile);
|
1999-04-16 09:35:26 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
2011-08-09 Pedro Alves <pedro@codesourcery.com>
gdb/
* elfread.c (elf_symtab_read): Ditto.
* maint.c (maintenance_command): Ditto.
* somread.c (som_symtab_read): Ditto.
* solib.c (solib_find, solib_map_sections, update_solib_list)
(solib_add, info_sharedlibrary_command, solib_name_from_address)
(solib_create_inferior_hook, in_solib_dynsym_resolve_code)
(sharedlibrary_command, no_shared_libraries): Rework comments.
* solib-irix.c (locate_base, disable_break, enable_break)
(irix_solib_create_inferior_hook, irix_solib_create_inferior_hook)
(irix_current_sos, irix_open_symbol_file_object)
(irix_special_symbol_handling): Ditto.
* solib-sunos.c (locate_base, first_link_map_member)
(sunos_current_sos, disable_break, enable_break)
(sunos_special_symbol_handling, sunos_solib_create_inferior_hook):
Ditto.
* solib-svr4.c (bfd_lookup_symbol, elf_locate_base, locate_base)
(open_symbol_file_object, svr4_current_sos, enable_break)
(svr4_special_symbol_handling, svr4_solib_create_inferior_hook):
Ditto.
* solib-frv.c (bfd_lookup_symbol, open_symbol_file_object)
(frv_current_sos, enable_break, frv_special_symbol_handling)
(frv_solib_create_inferior_hook): Ditto.
* solist.h (struct target_so_ops): Extend the comments of the
special_symbol_handling, current_sos and open_symbol_file_object
methods.
2011-08-09 20:51:47 +08:00
|
|
|
|
/* Read the symbol table of an ELF file.
|
1999-04-16 09:35:26 +08:00
|
|
|
|
|
2005-11-04 10:44:25 +08:00
|
|
|
|
Given an objfile, a symbol table, and a flag indicating whether the
|
2007-11-16 07:48:00 +08:00
|
|
|
|
symbol table contains regular, dynamic, or synthetic symbols, add all
|
|
|
|
|
|
the global function and data symbols to the minimal symbol table.
|
1999-04-16 09:35:26 +08:00
|
|
|
|
|
1999-07-08 04:19:36 +08:00
|
|
|
|
In stabs-in-ELF, as implemented by Sun, there are some local symbols
|
|
|
|
|
|
defined in the ELF symbol table, which can be used to locate
|
|
|
|
|
|
the beginnings of sections from each ".o" file that was linked to
|
|
|
|
|
|
form the executable objfile. We gather any such info and record it
|
2011-08-09 Pedro Alves <pedro@codesourcery.com>
gdb/
* elfread.c (elf_symtab_read): Ditto.
* maint.c (maintenance_command): Ditto.
* somread.c (som_symtab_read): Ditto.
* solib.c (solib_find, solib_map_sections, update_solib_list)
(solib_add, info_sharedlibrary_command, solib_name_from_address)
(solib_create_inferior_hook, in_solib_dynsym_resolve_code)
(sharedlibrary_command, no_shared_libraries): Rework comments.
* solib-irix.c (locate_base, disable_break, enable_break)
(irix_solib_create_inferior_hook, irix_solib_create_inferior_hook)
(irix_current_sos, irix_open_symbol_file_object)
(irix_special_symbol_handling): Ditto.
* solib-sunos.c (locate_base, first_link_map_member)
(sunos_current_sos, disable_break, enable_break)
(sunos_special_symbol_handling, sunos_solib_create_inferior_hook):
Ditto.
* solib-svr4.c (bfd_lookup_symbol, elf_locate_base, locate_base)
(open_symbol_file_object, svr4_current_sos, enable_break)
(svr4_special_symbol_handling, svr4_solib_create_inferior_hook):
Ditto.
* solib-frv.c (bfd_lookup_symbol, open_symbol_file_object)
(frv_current_sos, enable_break, frv_special_symbol_handling)
(frv_solib_create_inferior_hook): Ditto.
* solist.h (struct target_so_ops): Extend the comments of the
special_symbol_handling, current_sos and open_symbol_file_object
methods.
2011-08-09 20:51:47 +08:00
|
|
|
|
in data structures hung off the objfile's private data. */
|
1999-04-16 09:35:26 +08:00
|
|
|
|
|
2007-11-16 07:48:00 +08:00
|
|
|
|
#define ST_REGULAR 0
|
|
|
|
|
|
#define ST_DYNAMIC 1
|
|
|
|
|
|
#define ST_SYNTHETIC 2
|
|
|
|
|
|
|
1999-04-16 09:35:26 +08:00
|
|
|
|
static void
|
2007-11-16 07:48:00 +08:00
|
|
|
|
elf_symtab_read (struct objfile *objfile, int type,
|
2009-11-17 02:40:23 +08:00
|
|
|
|
long number_of_symbols, asymbol **symbol_table,
|
|
|
|
|
|
int copy_names)
|
1999-04-16 09:35:26 +08:00
|
|
|
|
{
|
2008-03-26 22:53:28 +08:00
|
|
|
|
struct gdbarch *gdbarch = get_objfile_arch (objfile);
|
1999-04-16 09:35:26 +08:00
|
|
|
|
asymbol *sym;
|
|
|
|
|
|
long i;
|
|
|
|
|
|
CORE_ADDR symaddr;
|
1999-09-09 08:02:17 +08:00
|
|
|
|
CORE_ADDR offset;
|
1999-04-16 09:35:26 +08:00
|
|
|
|
enum minimal_symbol_type ms_type;
|
|
|
|
|
|
/* If sectinfo is nonNULL, it contains section info that should end up
|
|
|
|
|
|
filed in the objfile. */
|
|
|
|
|
|
struct stab_section_info *sectinfo = NULL;
|
|
|
|
|
|
/* If filesym is nonzero, it points to a file symbol, but we haven't
|
|
|
|
|
|
seen any section info for it yet. */
|
|
|
|
|
|
asymbol *filesym = 0;
|
2009-11-06 03:53:04 +08:00
|
|
|
|
/* Name of filesym. This is either a constant string or is saved on
|
2011-12-22 05:30:31 +08:00
|
|
|
|
the objfile's filename cache. */
|
|
|
|
|
|
const char *filesymname = "";
|
2012-12-12 23:57:01 +08:00
|
|
|
|
struct dbx_symfile_info *dbx = DBX_SYMFILE_INFO (objfile);
|
1999-09-09 08:02:17 +08:00
|
|
|
|
int stripped = (bfd_get_symcount (objfile->obfd) == 0);
|
1999-07-08 04:19:36 +08:00
|
|
|
|
|
2005-11-14 02:56:34 +08:00
|
|
|
|
for (i = 0; i < number_of_symbols; i++)
|
1999-04-16 09:35:26 +08:00
|
|
|
|
{
|
2005-11-14 02:56:34 +08:00
|
|
|
|
sym = symbol_table[i];
|
|
|
|
|
|
if (sym->name == NULL || *sym->name == '\0')
|
1999-04-16 09:35:26 +08:00
|
|
|
|
{
|
2005-11-14 02:56:34 +08:00
|
|
|
|
/* Skip names that don't exist (shouldn't happen), or names
|
2011-01-08 03:36:19 +08:00
|
|
|
|
that are null strings (may happen). */
|
2005-11-14 02:56:34 +08:00
|
|
|
|
continue;
|
|
|
|
|
|
}
|
1999-04-16 09:35:26 +08:00
|
|
|
|
|
2006-02-22 04:38:48 +08:00
|
|
|
|
/* Skip "special" symbols, e.g. ARM mapping symbols. These are
|
|
|
|
|
|
symbols which do not correspond to objects in the symbol table,
|
|
|
|
|
|
but have some other target-specific meaning. */
|
|
|
|
|
|
if (bfd_is_target_special_symbol (objfile->obfd, sym))
|
2008-05-03 04:38:16 +08:00
|
|
|
|
{
|
|
|
|
|
|
if (gdbarch_record_special_symbol_p (gdbarch))
|
|
|
|
|
|
gdbarch_record_special_symbol (gdbarch, objfile, sym);
|
|
|
|
|
|
continue;
|
|
|
|
|
|
}
|
2006-02-22 04:38:48 +08:00
|
|
|
|
|
2013-04-09 04:04:42 +08:00
|
|
|
|
offset = ANOFFSET (objfile->section_offsets,
|
|
|
|
|
|
gdb_bfd_section_index (objfile->obfd, sym->section));
|
2007-11-16 07:48:00 +08:00
|
|
|
|
if (type == ST_DYNAMIC
|
2012-05-05 11:05:32 +08:00
|
|
|
|
&& sym->section == bfd_und_section_ptr
|
2005-11-14 02:56:34 +08:00
|
|
|
|
&& (sym->flags & BSF_FUNCTION))
|
|
|
|
|
|
{
|
|
|
|
|
|
struct minimal_symbol *msym;
|
2007-11-01 03:09:14 +08:00
|
|
|
|
bfd *abfd = objfile->obfd;
|
2011-07-26 06:23:38 +08:00
|
|
|
|
asection *sect;
|
2005-11-14 02:56:34 +08:00
|
|
|
|
|
|
|
|
|
|
/* Symbol is a reference to a function defined in
|
|
|
|
|
|
a shared library.
|
|
|
|
|
|
If its value is non zero then it is usually the address
|
|
|
|
|
|
of the corresponding entry in the procedure linkage table,
|
|
|
|
|
|
plus the desired section offset.
|
|
|
|
|
|
If its value is zero then the dynamic linker has to resolve
|
2011-01-08 03:36:19 +08:00
|
|
|
|
the symbol. We are unable to find any meaningful address
|
2005-11-14 02:56:34 +08:00
|
|
|
|
for this symbol in the executable file, so we skip it. */
|
|
|
|
|
|
symaddr = sym->value;
|
|
|
|
|
|
if (symaddr == 0)
|
|
|
|
|
|
continue;
|
2007-11-01 03:09:14 +08:00
|
|
|
|
|
|
|
|
|
|
/* sym->section is the undefined section. However, we want to
|
|
|
|
|
|
record the section where the PLT stub resides with the
|
|
|
|
|
|
minimal symbol. Search the section table for the one that
|
|
|
|
|
|
covers the stub's address. */
|
|
|
|
|
|
for (sect = abfd->sections; sect != NULL; sect = sect->next)
|
|
|
|
|
|
{
|
|
|
|
|
|
if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0)
|
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
|
|
if (symaddr >= bfd_get_section_vma (abfd, sect)
|
|
|
|
|
|
&& symaddr < bfd_get_section_vma (abfd, sect)
|
|
|
|
|
|
+ bfd_get_section_size (sect))
|
|
|
|
|
|
break;
|
|
|
|
|
|
}
|
|
|
|
|
|
if (!sect)
|
|
|
|
|
|
continue;
|
|
|
|
|
|
|
2011-12-19 12:36:29 +08:00
|
|
|
|
/* On ia64-hpux, we have discovered that the system linker
|
|
|
|
|
|
adds undefined symbols with nonzero addresses that cannot
|
|
|
|
|
|
be right (their address points inside the code of another
|
|
|
|
|
|
function in the .text section). This creates problems
|
|
|
|
|
|
when trying to determine which symbol corresponds to
|
|
|
|
|
|
a given address.
|
|
|
|
|
|
|
|
|
|
|
|
We try to detect those buggy symbols by checking which
|
|
|
|
|
|
section we think they correspond to. Normally, PLT symbols
|
|
|
|
|
|
are stored inside their own section, and the typical name
|
|
|
|
|
|
for that section is ".plt". So, if there is a ".plt"
|
|
|
|
|
|
section, and yet the section name of our symbol does not
|
|
|
|
|
|
start with ".plt", we ignore that symbol. */
|
|
|
|
|
|
if (strncmp (sect->name, ".plt", 4) != 0
|
|
|
|
|
|
&& bfd_get_section_by_name (abfd, ".plt") != NULL)
|
|
|
|
|
|
continue;
|
|
|
|
|
|
|
2013-04-09 04:04:42 +08:00
|
|
|
|
symaddr += ANOFFSET (objfile->section_offsets,
|
|
|
|
|
|
gdb_bfd_section_index (objfile->obfd, sect));
|
2007-11-01 03:09:14 +08:00
|
|
|
|
|
2005-11-14 02:56:34 +08:00
|
|
|
|
msym = record_minimal_symbol
|
2009-11-17 02:40:23 +08:00
|
|
|
|
(sym->name, strlen (sym->name), copy_names,
|
|
|
|
|
|
symaddr, mst_solib_trampoline, sect, objfile);
|
2005-11-14 02:56:34 +08:00
|
|
|
|
if (msym != NULL)
|
|
|
|
|
|
msym->filename = filesymname;
|
|
|
|
|
|
continue;
|
|
|
|
|
|
}
|
1999-04-16 09:35:26 +08:00
|
|
|
|
|
2005-11-14 02:56:34 +08:00
|
|
|
|
/* If it is a nonstripped executable, do not enter dynamic
|
|
|
|
|
|
symbols, as the dynamic symbol table is usually a subset
|
|
|
|
|
|
of the main symbol table. */
|
2007-11-16 07:48:00 +08:00
|
|
|
|
if (type == ST_DYNAMIC && !stripped)
|
2005-11-14 02:56:34 +08:00
|
|
|
|
continue;
|
|
|
|
|
|
if (sym->flags & BSF_FILE)
|
|
|
|
|
|
{
|
|
|
|
|
|
/* STT_FILE debugging symbol that helps stabs-in-elf debugging.
|
|
|
|
|
|
Chain any old one onto the objfile; remember new sym. */
|
|
|
|
|
|
if (sectinfo != NULL)
|
1999-04-16 09:35:26 +08:00
|
|
|
|
{
|
2005-11-14 02:56:34 +08:00
|
|
|
|
sectinfo->next = dbx->stab_section_info;
|
|
|
|
|
|
dbx->stab_section_info = sectinfo;
|
|
|
|
|
|
sectinfo = NULL;
|
|
|
|
|
|
}
|
|
|
|
|
|
filesym = sym;
|
2011-12-22 05:30:31 +08:00
|
|
|
|
filesymname = bcache (filesym->name, strlen (filesym->name) + 1,
|
2012-08-23 00:01:09 +08:00
|
|
|
|
objfile->per_bfd->filename_cache);
|
2005-11-14 02:56:34 +08:00
|
|
|
|
}
|
|
|
|
|
|
else if (sym->flags & BSF_SECTION_SYM)
|
|
|
|
|
|
continue;
|
From: Sergio Durigan Junior <sergiodj@redhat.com>
Subject: [PATCH] Fix for PR c++/15203 and PR c++/15210
Date: Sat, 09 Mar 2013 02:50:49 -0300 (5 days, 4 hours, 57 minutes ago)
Message-ID: <m3a9qdnmti.fsf@redhat.com>
Hi,
This bug was reported internally at our Bugzilla, along with a proposed
fix. After talking to Keith about it, he investigated and came up with
another patch needed to really fix the issue on CVS HEAD.
The first part of the fix is the patch to cp-namespace.c. It handles
the case when we are accessing a static variable inside a function
(inside a class) by the full linespec (is it right, Keith?). E.g.:
class foo
{
public:
int bar()
{
static int var = 0;
}
};
And then, printing the value of `var':
(gdb) print 'foo::bar()::var'
GDB would fall in an internal_error:
gdb/cp-namespace.c:816: internal-error: cp_lookup_nested_symbol called on a non-aggregate type.
This is because `cp_lookup_nested_symbol' is not handling the case when
TYPE_CODE is either _FUNC or _METHOD. This patch fixes it by returning
NULL in this case.
The second part of the fix is the patch to elfread.c. It is needed
because the BSF_GNU_UNIQUE flag was added to some symbols in
<http://sourceware.org/ml/binutils/2009-06/msg00016.html>. Because of
that, (still) the command:
(gdb) print 'foo::bar()::var'
where `var' is a static variable returns:
"No symbol "foo::bar()::var" in current context."
So with the second patch applied the command finally DTRT:
(gdb) print 'foo::bar()::var'
$1 = 0
This may not be the ideal solution, according to Keith it would be good
to implement productions on c-exp.y in order to recognize
CLASS::FUNCTION::VARIABLE, but it is a solution which works with what we
have today.
I regtested it in Fedora 17 x86_64 with -m64 and -m32, including
gdbserver, without regressions.
gdb/:
2013-03-14 Keith Seitz <keiths@redhat.com>
Alan Matsuoka <alanm@redhat.com>
PR c++/15203
PR c++/15210
* cp-namespace.c (cp_lookup_nested_symbol): Handle TYPE_CODE_FUNC and
TYPE_CODE_METHOD.
* elfread.c (elf_symtab_read): Handle BSF_GNU_UNIQUE for certain
symbols.
gdb/testsuite/:
2013-03-14 Sergio Durigan Junior <sergiodj@redhat.com>
PR c++/15203
PR c++/15210
* gdb.cp/m-static.cc (keepalive_int): New function.
(gnu_obj_1::method): New variable `sintvar', call `keepalive_int'.
* gdb.cp/m-static.exp: New test for `sintvar'.
2013-03-14 19:13:36 +08:00
|
|
|
|
else if (sym->flags & (BSF_GLOBAL | BSF_LOCAL | BSF_WEAK
|
|
|
|
|
|
| BSF_GNU_UNIQUE))
|
2005-11-14 02:56:34 +08:00
|
|
|
|
{
|
|
|
|
|
|
struct minimal_symbol *msym;
|
|
|
|
|
|
|
|
|
|
|
|
/* Select global/local/weak symbols. Note that bfd puts abs
|
|
|
|
|
|
symbols in their own section, so all symbols we are
|
2011-01-08 03:36:19 +08:00
|
|
|
|
interested in will have a section. */
|
|
|
|
|
|
/* Bfd symbols are section relative. */
|
2005-11-14 02:56:34 +08:00
|
|
|
|
symaddr = sym->value + sym->section->vma;
|
2008-08-22 06:28:00 +08:00
|
|
|
|
/* Relocate all non-absolute and non-TLS symbols by the
|
|
|
|
|
|
section offset. */
|
2012-05-05 11:05:32 +08:00
|
|
|
|
if (sym->section != bfd_abs_section_ptr
|
2008-08-22 06:28:00 +08:00
|
|
|
|
&& !(sym->section->flags & SEC_THREAD_LOCAL))
|
2005-11-14 02:56:34 +08:00
|
|
|
|
{
|
|
|
|
|
|
symaddr += offset;
|
1999-04-16 09:35:26 +08:00
|
|
|
|
}
|
2005-11-14 02:56:34 +08:00
|
|
|
|
/* For non-absolute symbols, use the type of the section
|
|
|
|
|
|
they are relative to, to intuit text/data. Bfd provides
|
2011-01-08 03:36:19 +08:00
|
|
|
|
no way of figuring this out for absolute symbols. */
|
2012-05-05 11:05:32 +08:00
|
|
|
|
if (sym->section == bfd_abs_section_ptr)
|
1999-04-16 09:35:26 +08:00
|
|
|
|
{
|
2005-11-14 02:56:34 +08:00
|
|
|
|
/* This is a hack to get the minimal symbol type
|
|
|
|
|
|
right for Irix 5, which has absolute addresses
|
2007-11-16 07:48:00 +08:00
|
|
|
|
with special section indices for dynamic symbols.
|
|
|
|
|
|
|
|
|
|
|
|
NOTE: uweigand-20071112: Synthetic symbols do not
|
|
|
|
|
|
have an ELF-private part, so do not touch those. */
|
2011-07-26 06:23:38 +08:00
|
|
|
|
unsigned int shndx = type == ST_SYNTHETIC ? 0 :
|
2005-11-14 02:56:34 +08:00
|
|
|
|
((elf_symbol_type *) sym)->internal_elf_sym.st_shndx;
|
|
|
|
|
|
|
|
|
|
|
|
switch (shndx)
|
1999-04-16 09:35:26 +08:00
|
|
|
|
{
|
2005-11-14 02:56:34 +08:00
|
|
|
|
case SHN_MIPS_TEXT:
|
|
|
|
|
|
ms_type = mst_text;
|
|
|
|
|
|
break;
|
|
|
|
|
|
case SHN_MIPS_DATA:
|
|
|
|
|
|
ms_type = mst_data;
|
|
|
|
|
|
break;
|
|
|
|
|
|
case SHN_MIPS_ACOMMON:
|
|
|
|
|
|
ms_type = mst_bss;
|
|
|
|
|
|
break;
|
|
|
|
|
|
default:
|
|
|
|
|
|
ms_type = mst_abs;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* If it is an Irix dynamic symbol, skip section name
|
2011-01-08 03:36:19 +08:00
|
|
|
|
symbols, relocate all others by section offset. */
|
2005-11-14 02:56:34 +08:00
|
|
|
|
if (ms_type != mst_abs)
|
|
|
|
|
|
{
|
|
|
|
|
|
if (sym->name[0] == '.')
|
|
|
|
|
|
continue;
|
1999-09-09 08:02:17 +08:00
|
|
|
|
symaddr += offset;
|
1999-04-16 09:35:26 +08:00
|
|
|
|
}
|
2005-11-14 02:56:34 +08:00
|
|
|
|
}
|
|
|
|
|
|
else if (sym->section->flags & SEC_CODE)
|
|
|
|
|
|
{
|
From: Sergio Durigan Junior <sergiodj@redhat.com>
Subject: [PATCH] Fix for PR c++/15203 and PR c++/15210
Date: Sat, 09 Mar 2013 02:50:49 -0300 (5 days, 4 hours, 57 minutes ago)
Message-ID: <m3a9qdnmti.fsf@redhat.com>
Hi,
This bug was reported internally at our Bugzilla, along with a proposed
fix. After talking to Keith about it, he investigated and came up with
another patch needed to really fix the issue on CVS HEAD.
The first part of the fix is the patch to cp-namespace.c. It handles
the case when we are accessing a static variable inside a function
(inside a class) by the full linespec (is it right, Keith?). E.g.:
class foo
{
public:
int bar()
{
static int var = 0;
}
};
And then, printing the value of `var':
(gdb) print 'foo::bar()::var'
GDB would fall in an internal_error:
gdb/cp-namespace.c:816: internal-error: cp_lookup_nested_symbol called on a non-aggregate type.
This is because `cp_lookup_nested_symbol' is not handling the case when
TYPE_CODE is either _FUNC or _METHOD. This patch fixes it by returning
NULL in this case.
The second part of the fix is the patch to elfread.c. It is needed
because the BSF_GNU_UNIQUE flag was added to some symbols in
<http://sourceware.org/ml/binutils/2009-06/msg00016.html>. Because of
that, (still) the command:
(gdb) print 'foo::bar()::var'
where `var' is a static variable returns:
"No symbol "foo::bar()::var" in current context."
So with the second patch applied the command finally DTRT:
(gdb) print 'foo::bar()::var'
$1 = 0
This may not be the ideal solution, according to Keith it would be good
to implement productions on c-exp.y in order to recognize
CLASS::FUNCTION::VARIABLE, but it is a solution which works with what we
have today.
I regtested it in Fedora 17 x86_64 with -m64 and -m32, including
gdbserver, without regressions.
gdb/:
2013-03-14 Keith Seitz <keiths@redhat.com>
Alan Matsuoka <alanm@redhat.com>
PR c++/15203
PR c++/15210
* cp-namespace.c (cp_lookup_nested_symbol): Handle TYPE_CODE_FUNC and
TYPE_CODE_METHOD.
* elfread.c (elf_symtab_read): Handle BSF_GNU_UNIQUE for certain
symbols.
gdb/testsuite/:
2013-03-14 Sergio Durigan Junior <sergiodj@redhat.com>
PR c++/15203
PR c++/15210
* gdb.cp/m-static.cc (keepalive_int): New function.
(gnu_obj_1::method): New variable `sintvar', call `keepalive_int'.
* gdb.cp/m-static.exp: New test for `sintvar'.
2013-03-14 19:13:36 +08:00
|
|
|
|
if (sym->flags & (BSF_GLOBAL | BSF_WEAK | BSF_GNU_UNIQUE))
|
1999-04-16 09:35:26 +08:00
|
|
|
|
{
|
2011-03-29 04:21:04 +08:00
|
|
|
|
if (sym->flags & BSF_GNU_INDIRECT_FUNCTION)
|
|
|
|
|
|
ms_type = mst_text_gnu_ifunc;
|
|
|
|
|
|
else
|
|
|
|
|
|
ms_type = mst_text;
|
2005-11-14 02:56:34 +08:00
|
|
|
|
}
|
2011-04-18 02:09:02 +08:00
|
|
|
|
/* The BSF_SYNTHETIC check is there to omit ppc64 function
|
|
|
|
|
|
descriptors mistaken for static functions starting with 'L'.
|
|
|
|
|
|
*/
|
|
|
|
|
|
else if ((sym->name[0] == '.' && sym->name[1] == 'L'
|
|
|
|
|
|
&& (sym->flags & BSF_SYNTHETIC) == 0)
|
2005-11-14 02:56:34 +08:00
|
|
|
|
|| ((sym->flags & BSF_LOCAL)
|
|
|
|
|
|
&& sym->name[0] == '$'
|
|
|
|
|
|
&& sym->name[1] == 'L'))
|
|
|
|
|
|
/* Looks like a compiler-generated label. Skip
|
|
|
|
|
|
it. The assembler should be skipping these (to
|
|
|
|
|
|
keep executables small), but apparently with
|
|
|
|
|
|
gcc on the (deleted) delta m88k SVR4, it loses.
|
|
|
|
|
|
So to have us check too should be harmless (but
|
|
|
|
|
|
I encourage people to fix this in the assembler
|
|
|
|
|
|
instead of adding checks here). */
|
|
|
|
|
|
continue;
|
|
|
|
|
|
else
|
|
|
|
|
|
{
|
|
|
|
|
|
ms_type = mst_file_text;
|
1999-04-16 09:35:26 +08:00
|
|
|
|
}
|
2005-11-14 02:56:34 +08:00
|
|
|
|
}
|
|
|
|
|
|
else if (sym->section->flags & SEC_ALLOC)
|
|
|
|
|
|
{
|
From: Sergio Durigan Junior <sergiodj@redhat.com>
Subject: [PATCH] Fix for PR c++/15203 and PR c++/15210
Date: Sat, 09 Mar 2013 02:50:49 -0300 (5 days, 4 hours, 57 minutes ago)
Message-ID: <m3a9qdnmti.fsf@redhat.com>
Hi,
This bug was reported internally at our Bugzilla, along with a proposed
fix. After talking to Keith about it, he investigated and came up with
another patch needed to really fix the issue on CVS HEAD.
The first part of the fix is the patch to cp-namespace.c. It handles
the case when we are accessing a static variable inside a function
(inside a class) by the full linespec (is it right, Keith?). E.g.:
class foo
{
public:
int bar()
{
static int var = 0;
}
};
And then, printing the value of `var':
(gdb) print 'foo::bar()::var'
GDB would fall in an internal_error:
gdb/cp-namespace.c:816: internal-error: cp_lookup_nested_symbol called on a non-aggregate type.
This is because `cp_lookup_nested_symbol' is not handling the case when
TYPE_CODE is either _FUNC or _METHOD. This patch fixes it by returning
NULL in this case.
The second part of the fix is the patch to elfread.c. It is needed
because the BSF_GNU_UNIQUE flag was added to some symbols in
<http://sourceware.org/ml/binutils/2009-06/msg00016.html>. Because of
that, (still) the command:
(gdb) print 'foo::bar()::var'
where `var' is a static variable returns:
"No symbol "foo::bar()::var" in current context."
So with the second patch applied the command finally DTRT:
(gdb) print 'foo::bar()::var'
$1 = 0
This may not be the ideal solution, according to Keith it would be good
to implement productions on c-exp.y in order to recognize
CLASS::FUNCTION::VARIABLE, but it is a solution which works with what we
have today.
I regtested it in Fedora 17 x86_64 with -m64 and -m32, including
gdbserver, without regressions.
gdb/:
2013-03-14 Keith Seitz <keiths@redhat.com>
Alan Matsuoka <alanm@redhat.com>
PR c++/15203
PR c++/15210
* cp-namespace.c (cp_lookup_nested_symbol): Handle TYPE_CODE_FUNC and
TYPE_CODE_METHOD.
* elfread.c (elf_symtab_read): Handle BSF_GNU_UNIQUE for certain
symbols.
gdb/testsuite/:
2013-03-14 Sergio Durigan Junior <sergiodj@redhat.com>
PR c++/15203
PR c++/15210
* gdb.cp/m-static.cc (keepalive_int): New function.
(gnu_obj_1::method): New variable `sintvar', call `keepalive_int'.
* gdb.cp/m-static.exp: New test for `sintvar'.
2013-03-14 19:13:36 +08:00
|
|
|
|
if (sym->flags & (BSF_GLOBAL | BSF_WEAK | BSF_GNU_UNIQUE))
|
1999-04-16 09:35:26 +08:00
|
|
|
|
{
|
2005-11-14 02:56:34 +08:00
|
|
|
|
if (sym->section->flags & SEC_LOAD)
|
1999-04-16 09:35:26 +08:00
|
|
|
|
{
|
2005-11-14 02:56:34 +08:00
|
|
|
|
ms_type = mst_data;
|
1999-04-16 09:35:26 +08:00
|
|
|
|
}
|
|
|
|
|
|
else
|
|
|
|
|
|
{
|
2005-11-14 02:56:34 +08:00
|
|
|
|
ms_type = mst_bss;
|
1999-04-16 09:35:26 +08:00
|
|
|
|
}
|
|
|
|
|
|
}
|
2005-11-14 02:56:34 +08:00
|
|
|
|
else if (sym->flags & BSF_LOCAL)
|
1999-04-16 09:35:26 +08:00
|
|
|
|
{
|
2005-11-14 02:56:34 +08:00
|
|
|
|
/* Named Local variable in a Data section.
|
|
|
|
|
|
Check its name for stabs-in-elf. */
|
|
|
|
|
|
int special_local_sect;
|
2010-05-15 02:35:11 +08:00
|
|
|
|
|
2005-11-14 02:56:34 +08:00
|
|
|
|
if (strcmp ("Bbss.bss", sym->name) == 0)
|
|
|
|
|
|
special_local_sect = SECT_OFF_BSS (objfile);
|
|
|
|
|
|
else if (strcmp ("Ddata.data", sym->name) == 0)
|
|
|
|
|
|
special_local_sect = SECT_OFF_DATA (objfile);
|
|
|
|
|
|
else if (strcmp ("Drodata.rodata", sym->name) == 0)
|
|
|
|
|
|
special_local_sect = SECT_OFF_RODATA (objfile);
|
|
|
|
|
|
else
|
|
|
|
|
|
special_local_sect = -1;
|
|
|
|
|
|
if (special_local_sect >= 0)
|
1999-04-16 09:35:26 +08:00
|
|
|
|
{
|
2005-11-14 02:56:34 +08:00
|
|
|
|
/* Found a special local symbol. Allocate a
|
|
|
|
|
|
sectinfo, if needed, and fill it in. */
|
|
|
|
|
|
if (sectinfo == NULL)
|
1999-04-16 09:35:26 +08:00
|
|
|
|
{
|
2005-11-14 02:56:34 +08:00
|
|
|
|
int max_index;
|
|
|
|
|
|
size_t size;
|
|
|
|
|
|
|
2009-05-01 05:59:03 +08:00
|
|
|
|
max_index = SECT_OFF_BSS (objfile);
|
|
|
|
|
|
if (objfile->sect_index_data > max_index)
|
|
|
|
|
|
max_index = objfile->sect_index_data;
|
|
|
|
|
|
if (objfile->sect_index_rodata > max_index)
|
|
|
|
|
|
max_index = objfile->sect_index_rodata;
|
2005-11-14 02:56:34 +08:00
|
|
|
|
|
|
|
|
|
|
/* max_index is the largest index we'll
|
|
|
|
|
|
use into this array, so we must
|
|
|
|
|
|
allocate max_index+1 elements for it.
|
|
|
|
|
|
However, 'struct stab_section_info'
|
|
|
|
|
|
already includes one element, so we
|
|
|
|
|
|
need to allocate max_index aadditional
|
|
|
|
|
|
elements. */
|
2011-07-26 06:23:38 +08:00
|
|
|
|
size = (sizeof (struct stab_section_info)
|
2011-03-07 19:13:08 +08:00
|
|
|
|
+ (sizeof (CORE_ADDR) * max_index));
|
2005-11-14 02:56:34 +08:00
|
|
|
|
sectinfo = (struct stab_section_info *)
|
|
|
|
|
|
xmalloc (size);
|
|
|
|
|
|
memset (sectinfo, 0, size);
|
|
|
|
|
|
sectinfo->num_sections = max_index;
|
|
|
|
|
|
if (filesym == NULL)
|
1999-04-16 09:35:26 +08:00
|
|
|
|
{
|
2005-11-14 02:56:34 +08:00
|
|
|
|
complaint (&symfile_complaints,
|
2011-01-06 06:22:53 +08:00
|
|
|
|
_("elf/stab section information %s "
|
|
|
|
|
|
"without a preceding file symbol"),
|
2005-11-14 02:56:34 +08:00
|
|
|
|
sym->name);
|
|
|
|
|
|
}
|
|
|
|
|
|
else
|
|
|
|
|
|
{
|
|
|
|
|
|
sectinfo->filename =
|
|
|
|
|
|
(char *) filesym->name;
|
1999-04-16 09:35:26 +08:00
|
|
|
|
}
|
|
|
|
|
|
}
|
2005-11-14 02:56:34 +08:00
|
|
|
|
if (sectinfo->sections[special_local_sect] != 0)
|
|
|
|
|
|
complaint (&symfile_complaints,
|
2011-01-06 06:22:53 +08:00
|
|
|
|
_("duplicated elf/stab section "
|
|
|
|
|
|
"information for %s"),
|
2005-11-14 02:56:34 +08:00
|
|
|
|
sectinfo->filename);
|
|
|
|
|
|
/* BFD symbols are section relative. */
|
|
|
|
|
|
symaddr = sym->value + sym->section->vma;
|
|
|
|
|
|
/* Relocate non-absolute symbols by the
|
|
|
|
|
|
section offset. */
|
2012-05-05 11:05:32 +08:00
|
|
|
|
if (sym->section != bfd_abs_section_ptr)
|
2005-11-14 02:56:34 +08:00
|
|
|
|
symaddr += offset;
|
|
|
|
|
|
sectinfo->sections[special_local_sect] = symaddr;
|
|
|
|
|
|
/* The special local symbols don't go in the
|
|
|
|
|
|
minimal symbol table, so ignore this one. */
|
|
|
|
|
|
continue;
|
|
|
|
|
|
}
|
|
|
|
|
|
/* Not a special stabs-in-elf symbol, do regular
|
|
|
|
|
|
symbol processing. */
|
|
|
|
|
|
if (sym->section->flags & SEC_LOAD)
|
|
|
|
|
|
{
|
|
|
|
|
|
ms_type = mst_file_data;
|
1999-04-16 09:35:26 +08:00
|
|
|
|
}
|
|
|
|
|
|
else
|
|
|
|
|
|
{
|
2005-11-14 02:56:34 +08:00
|
|
|
|
ms_type = mst_file_bss;
|
1999-04-16 09:35:26 +08:00
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
else
|
|
|
|
|
|
{
|
2005-11-14 02:56:34 +08:00
|
|
|
|
ms_type = mst_unknown;
|
1999-04-16 09:35:26 +08:00
|
|
|
|
}
|
2005-11-14 02:56:34 +08:00
|
|
|
|
}
|
|
|
|
|
|
else
|
|
|
|
|
|
{
|
|
|
|
|
|
/* FIXME: Solaris2 shared libraries include lots of
|
2011-07-26 06:23:38 +08:00
|
|
|
|
odd "absolute" and "undefined" symbols, that play
|
2005-11-14 02:56:34 +08:00
|
|
|
|
hob with actions like finding what function the PC
|
|
|
|
|
|
is in. Ignore them if they aren't text, data, or bss. */
|
|
|
|
|
|
/* ms_type = mst_unknown; */
|
2011-01-08 03:36:19 +08:00
|
|
|
|
continue; /* Skip this symbol. */
|
2005-11-14 02:56:34 +08:00
|
|
|
|
}
|
|
|
|
|
|
msym = record_minimal_symbol
|
2009-11-17 02:40:23 +08:00
|
|
|
|
(sym->name, strlen (sym->name), copy_names, symaddr,
|
2005-11-14 02:56:34 +08:00
|
|
|
|
ms_type, sym->section, objfile);
|
2007-11-16 07:48:00 +08:00
|
|
|
|
|
2005-11-14 02:56:34 +08:00
|
|
|
|
if (msym)
|
|
|
|
|
|
{
|
2007-11-16 07:48:00 +08:00
|
|
|
|
/* NOTE: uweigand-20071112: A synthetic symbol does not have an
|
2013-02-23 07:24:24 +08:00
|
|
|
|
ELF-private part. */
|
2007-11-16 07:48:00 +08:00
|
|
|
|
if (type != ST_SYNTHETIC)
|
2013-02-23 07:24:24 +08:00
|
|
|
|
{
|
|
|
|
|
|
/* Pass symbol size field in via BFD. FIXME!!! */
|
|
|
|
|
|
elf_symbol_type *elf_sym = (elf_symbol_type *) sym;
|
|
|
|
|
|
SET_MSYMBOL_SIZE (msym, elf_sym->internal_elf_sym.st_size);
|
|
|
|
|
|
}
|
2011-07-26 06:23:38 +08:00
|
|
|
|
|
2009-11-14 06:47:13 +08:00
|
|
|
|
msym->filename = filesymname;
|
|
|
|
|
|
gdbarch_elf_make_msymbol_special (gdbarch, sym, msym);
|
2005-11-14 02:56:34 +08:00
|
|
|
|
}
|
2008-05-15 02:14:34 +08:00
|
|
|
|
|
2013-04-16 01:31:17 +08:00
|
|
|
|
/* If we see a default versioned symbol, install it under
|
|
|
|
|
|
its version-less name. */
|
|
|
|
|
|
if (msym != NULL)
|
|
|
|
|
|
{
|
|
|
|
|
|
const char *atsign = strchr (sym->name, '@');
|
|
|
|
|
|
|
|
|
|
|
|
if (atsign != NULL && atsign[1] == '@' && atsign > sym->name)
|
|
|
|
|
|
{
|
|
|
|
|
|
int len = atsign - sym->name;
|
|
|
|
|
|
|
|
|
|
|
|
record_minimal_symbol (sym->name, len, 1, symaddr,
|
|
|
|
|
|
ms_type, sym->section, objfile);
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
2008-05-15 02:14:34 +08:00
|
|
|
|
/* For @plt symbols, also record a trampoline to the
|
|
|
|
|
|
destination symbol. The @plt symbol will be used in
|
|
|
|
|
|
disassembly, and the trampoline will be used when we are
|
|
|
|
|
|
trying to find the target. */
|
|
|
|
|
|
if (msym && ms_type == mst_text && type == ST_SYNTHETIC)
|
|
|
|
|
|
{
|
|
|
|
|
|
int len = strlen (sym->name);
|
|
|
|
|
|
|
|
|
|
|
|
if (len > 4 && strcmp (sym->name + len - 4, "@plt") == 0)
|
|
|
|
|
|
{
|
|
|
|
|
|
struct minimal_symbol *mtramp;
|
|
|
|
|
|
|
2009-11-17 02:40:23 +08:00
|
|
|
|
mtramp = record_minimal_symbol (sym->name, len - 4, 1,
|
|
|
|
|
|
symaddr,
|
2008-05-15 02:14:34 +08:00
|
|
|
|
mst_solib_trampoline,
|
|
|
|
|
|
sym->section, objfile);
|
|
|
|
|
|
if (mtramp)
|
|
|
|
|
|
{
|
2012-09-12 05:26:16 +08:00
|
|
|
|
SET_MSYMBOL_SIZE (mtramp, MSYMBOL_SIZE (msym));
|
2012-06-19 08:53:35 +08:00
|
|
|
|
mtramp->created_by_gdb = 1;
|
2008-05-15 02:14:34 +08:00
|
|
|
|
mtramp->filename = filesymname;
|
|
|
|
|
|
gdbarch_elf_make_msymbol_special (gdbarch, sym, mtramp);
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
1999-04-16 09:35:26 +08:00
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
gdb/
STT_GNU_IFUNC reader implementation.
* elfread.c: Include gdbtypes.h, value.h and infcall.h.
(SYMBOL_GOT_PLT_SUFFIX, elf_rel_plt_read)
(elf_objfile_gnu_ifunc_cache_data, struct elf_gnu_ifunc_cache)
(elf_gnu_ifunc_cache_hash, elf_gnu_ifunc_cache_eq)
(elf_gnu_ifunc_record_cache, elf_gnu_ifunc_resolve_by_cache)
(elf_gnu_ifunc_resolve_by_got, elf_gnu_ifunc_resolve_name)
(elf_gnu_ifunc_resolve_addr): New.
(elf_symfile_read): Call elf_rel_plt_read.
(elf_gnu_ifunc_fns): New.
(_initialize_elfread): Initialize elf_objfile_gnu_ifunc_cache_data.
Install elf_gnu_ifunc_fns.
* infcall.c (find_function_return_type): New function.
(find_function_addr): Resolve TYPE_GNU_IFUNC functions, if possible.
* minsyms.c (stub_gnu_ifunc_resolve_addr)
(stub_gnu_ifunc_resolve_name): New functions.
(stub_gnu_ifunc_fns, gnu_ifunc_fns_p): New variables.
* symtab.h (struct gnu_ifunc_fns, gnu_ifunc_resolve_addr)
(gnu_ifunc_resolve_name, gnu_ifunc_fns_p): New.
2011-03-29 04:26:24 +08:00
|
|
|
|
/* Build minimal symbols named `function@got.plt' (see SYMBOL_GOT_PLT_SUFFIX)
|
|
|
|
|
|
for later look ups of which function to call when user requests
|
|
|
|
|
|
a STT_GNU_IFUNC function. As the STT_GNU_IFUNC type is found at the target
|
|
|
|
|
|
library defining `function' we cannot yet know while reading OBJFILE which
|
|
|
|
|
|
of the SYMBOL_GOT_PLT_SUFFIX entries will be needed and later
|
|
|
|
|
|
DYN_SYMBOL_TABLE is no longer easily available for OBJFILE. */
|
|
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
|
elf_rel_plt_read (struct objfile *objfile, asymbol **dyn_symbol_table)
|
|
|
|
|
|
{
|
|
|
|
|
|
bfd *obfd = objfile->obfd;
|
|
|
|
|
|
const struct elf_backend_data *bed = get_elf_backend_data (obfd);
|
|
|
|
|
|
asection *plt, *relplt, *got_plt;
|
|
|
|
|
|
int plt_elf_idx;
|
|
|
|
|
|
bfd_size_type reloc_count, reloc;
|
|
|
|
|
|
char *string_buffer = NULL;
|
|
|
|
|
|
size_t string_buffer_size = 0;
|
|
|
|
|
|
struct cleanup *back_to;
|
2013-08-20 23:04:51 +08:00
|
|
|
|
struct gdbarch *gdbarch = get_objfile_arch (objfile);
|
gdb/
STT_GNU_IFUNC reader implementation.
* elfread.c: Include gdbtypes.h, value.h and infcall.h.
(SYMBOL_GOT_PLT_SUFFIX, elf_rel_plt_read)
(elf_objfile_gnu_ifunc_cache_data, struct elf_gnu_ifunc_cache)
(elf_gnu_ifunc_cache_hash, elf_gnu_ifunc_cache_eq)
(elf_gnu_ifunc_record_cache, elf_gnu_ifunc_resolve_by_cache)
(elf_gnu_ifunc_resolve_by_got, elf_gnu_ifunc_resolve_name)
(elf_gnu_ifunc_resolve_addr): New.
(elf_symfile_read): Call elf_rel_plt_read.
(elf_gnu_ifunc_fns): New.
(_initialize_elfread): Initialize elf_objfile_gnu_ifunc_cache_data.
Install elf_gnu_ifunc_fns.
* infcall.c (find_function_return_type): New function.
(find_function_addr): Resolve TYPE_GNU_IFUNC functions, if possible.
* minsyms.c (stub_gnu_ifunc_resolve_addr)
(stub_gnu_ifunc_resolve_name): New functions.
(stub_gnu_ifunc_fns, gnu_ifunc_fns_p): New variables.
* symtab.h (struct gnu_ifunc_fns, gnu_ifunc_resolve_addr)
(gnu_ifunc_resolve_name, gnu_ifunc_fns_p): New.
2011-03-29 04:26:24 +08:00
|
|
|
|
struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr;
|
|
|
|
|
|
size_t ptr_size = TYPE_LENGTH (ptr_type);
|
|
|
|
|
|
|
|
|
|
|
|
if (objfile->separate_debug_objfile_backlink)
|
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
|
|
plt = bfd_get_section_by_name (obfd, ".plt");
|
|
|
|
|
|
if (plt == NULL)
|
|
|
|
|
|
return;
|
|
|
|
|
|
plt_elf_idx = elf_section_data (plt)->this_idx;
|
|
|
|
|
|
|
|
|
|
|
|
got_plt = bfd_get_section_by_name (obfd, ".got.plt");
|
|
|
|
|
|
if (got_plt == NULL)
|
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
|
|
/* This search algorithm is from _bfd_elf_canonicalize_dynamic_reloc. */
|
|
|
|
|
|
for (relplt = obfd->sections; relplt != NULL; relplt = relplt->next)
|
|
|
|
|
|
if (elf_section_data (relplt)->this_hdr.sh_info == plt_elf_idx
|
|
|
|
|
|
&& (elf_section_data (relplt)->this_hdr.sh_type == SHT_REL
|
|
|
|
|
|
|| elf_section_data (relplt)->this_hdr.sh_type == SHT_RELA))
|
|
|
|
|
|
break;
|
|
|
|
|
|
if (relplt == NULL)
|
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
|
|
if (! bed->s->slurp_reloc_table (obfd, relplt, dyn_symbol_table, TRUE))
|
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
|
|
back_to = make_cleanup (free_current_contents, &string_buffer);
|
|
|
|
|
|
|
|
|
|
|
|
reloc_count = relplt->size / elf_section_data (relplt)->this_hdr.sh_entsize;
|
|
|
|
|
|
for (reloc = 0; reloc < reloc_count; reloc++)
|
|
|
|
|
|
{
|
2012-05-19 05:02:52 +08:00
|
|
|
|
const char *name;
|
gdb/
STT_GNU_IFUNC reader implementation.
* elfread.c: Include gdbtypes.h, value.h and infcall.h.
(SYMBOL_GOT_PLT_SUFFIX, elf_rel_plt_read)
(elf_objfile_gnu_ifunc_cache_data, struct elf_gnu_ifunc_cache)
(elf_gnu_ifunc_cache_hash, elf_gnu_ifunc_cache_eq)
(elf_gnu_ifunc_record_cache, elf_gnu_ifunc_resolve_by_cache)
(elf_gnu_ifunc_resolve_by_got, elf_gnu_ifunc_resolve_name)
(elf_gnu_ifunc_resolve_addr): New.
(elf_symfile_read): Call elf_rel_plt_read.
(elf_gnu_ifunc_fns): New.
(_initialize_elfread): Initialize elf_objfile_gnu_ifunc_cache_data.
Install elf_gnu_ifunc_fns.
* infcall.c (find_function_return_type): New function.
(find_function_addr): Resolve TYPE_GNU_IFUNC functions, if possible.
* minsyms.c (stub_gnu_ifunc_resolve_addr)
(stub_gnu_ifunc_resolve_name): New functions.
(stub_gnu_ifunc_fns, gnu_ifunc_fns_p): New variables.
* symtab.h (struct gnu_ifunc_fns, gnu_ifunc_resolve_addr)
(gnu_ifunc_resolve_name, gnu_ifunc_fns_p): New.
2011-03-29 04:26:24 +08:00
|
|
|
|
struct minimal_symbol *msym;
|
|
|
|
|
|
CORE_ADDR address;
|
|
|
|
|
|
const size_t got_suffix_len = strlen (SYMBOL_GOT_PLT_SUFFIX);
|
|
|
|
|
|
size_t name_len;
|
|
|
|
|
|
|
|
|
|
|
|
name = bfd_asymbol_name (*relplt->relocation[reloc].sym_ptr_ptr);
|
|
|
|
|
|
name_len = strlen (name);
|
|
|
|
|
|
address = relplt->relocation[reloc].address;
|
|
|
|
|
|
|
|
|
|
|
|
/* Does the pointer reside in the .got.plt section? */
|
|
|
|
|
|
if (!(bfd_get_section_vma (obfd, got_plt) <= address
|
|
|
|
|
|
&& address < bfd_get_section_vma (obfd, got_plt)
|
|
|
|
|
|
+ bfd_get_section_size (got_plt)))
|
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
|
|
/* We cannot check if NAME is a reference to mst_text_gnu_ifunc as in
|
|
|
|
|
|
OBJFILE the symbol is undefined and the objfile having NAME defined
|
|
|
|
|
|
may not yet have been loaded. */
|
|
|
|
|
|
|
2011-07-24 00:49:16 +08:00
|
|
|
|
if (string_buffer_size < name_len + got_suffix_len + 1)
|
gdb/
STT_GNU_IFUNC reader implementation.
* elfread.c: Include gdbtypes.h, value.h and infcall.h.
(SYMBOL_GOT_PLT_SUFFIX, elf_rel_plt_read)
(elf_objfile_gnu_ifunc_cache_data, struct elf_gnu_ifunc_cache)
(elf_gnu_ifunc_cache_hash, elf_gnu_ifunc_cache_eq)
(elf_gnu_ifunc_record_cache, elf_gnu_ifunc_resolve_by_cache)
(elf_gnu_ifunc_resolve_by_got, elf_gnu_ifunc_resolve_name)
(elf_gnu_ifunc_resolve_addr): New.
(elf_symfile_read): Call elf_rel_plt_read.
(elf_gnu_ifunc_fns): New.
(_initialize_elfread): Initialize elf_objfile_gnu_ifunc_cache_data.
Install elf_gnu_ifunc_fns.
* infcall.c (find_function_return_type): New function.
(find_function_addr): Resolve TYPE_GNU_IFUNC functions, if possible.
* minsyms.c (stub_gnu_ifunc_resolve_addr)
(stub_gnu_ifunc_resolve_name): New functions.
(stub_gnu_ifunc_fns, gnu_ifunc_fns_p): New variables.
* symtab.h (struct gnu_ifunc_fns, gnu_ifunc_resolve_addr)
(gnu_ifunc_resolve_name, gnu_ifunc_fns_p): New.
2011-03-29 04:26:24 +08:00
|
|
|
|
{
|
|
|
|
|
|
string_buffer_size = 2 * (name_len + got_suffix_len);
|
|
|
|
|
|
string_buffer = xrealloc (string_buffer, string_buffer_size);
|
|
|
|
|
|
}
|
|
|
|
|
|
memcpy (string_buffer, name, name_len);
|
|
|
|
|
|
memcpy (&string_buffer[name_len], SYMBOL_GOT_PLT_SUFFIX,
|
2011-07-24 00:49:16 +08:00
|
|
|
|
got_suffix_len + 1);
|
gdb/
STT_GNU_IFUNC reader implementation.
* elfread.c: Include gdbtypes.h, value.h and infcall.h.
(SYMBOL_GOT_PLT_SUFFIX, elf_rel_plt_read)
(elf_objfile_gnu_ifunc_cache_data, struct elf_gnu_ifunc_cache)
(elf_gnu_ifunc_cache_hash, elf_gnu_ifunc_cache_eq)
(elf_gnu_ifunc_record_cache, elf_gnu_ifunc_resolve_by_cache)
(elf_gnu_ifunc_resolve_by_got, elf_gnu_ifunc_resolve_name)
(elf_gnu_ifunc_resolve_addr): New.
(elf_symfile_read): Call elf_rel_plt_read.
(elf_gnu_ifunc_fns): New.
(_initialize_elfread): Initialize elf_objfile_gnu_ifunc_cache_data.
Install elf_gnu_ifunc_fns.
* infcall.c (find_function_return_type): New function.
(find_function_addr): Resolve TYPE_GNU_IFUNC functions, if possible.
* minsyms.c (stub_gnu_ifunc_resolve_addr)
(stub_gnu_ifunc_resolve_name): New functions.
(stub_gnu_ifunc_fns, gnu_ifunc_fns_p): New variables.
* symtab.h (struct gnu_ifunc_fns, gnu_ifunc_resolve_addr)
(gnu_ifunc_resolve_name, gnu_ifunc_fns_p): New.
2011-03-29 04:26:24 +08:00
|
|
|
|
|
|
|
|
|
|
msym = record_minimal_symbol (string_buffer, name_len + got_suffix_len,
|
|
|
|
|
|
1, address, mst_slot_got_plt, got_plt,
|
|
|
|
|
|
objfile);
|
|
|
|
|
|
if (msym)
|
2012-09-12 05:26:16 +08:00
|
|
|
|
SET_MSYMBOL_SIZE (msym, ptr_size);
|
gdb/
STT_GNU_IFUNC reader implementation.
* elfread.c: Include gdbtypes.h, value.h and infcall.h.
(SYMBOL_GOT_PLT_SUFFIX, elf_rel_plt_read)
(elf_objfile_gnu_ifunc_cache_data, struct elf_gnu_ifunc_cache)
(elf_gnu_ifunc_cache_hash, elf_gnu_ifunc_cache_eq)
(elf_gnu_ifunc_record_cache, elf_gnu_ifunc_resolve_by_cache)
(elf_gnu_ifunc_resolve_by_got, elf_gnu_ifunc_resolve_name)
(elf_gnu_ifunc_resolve_addr): New.
(elf_symfile_read): Call elf_rel_plt_read.
(elf_gnu_ifunc_fns): New.
(_initialize_elfread): Initialize elf_objfile_gnu_ifunc_cache_data.
Install elf_gnu_ifunc_fns.
* infcall.c (find_function_return_type): New function.
(find_function_addr): Resolve TYPE_GNU_IFUNC functions, if possible.
* minsyms.c (stub_gnu_ifunc_resolve_addr)
(stub_gnu_ifunc_resolve_name): New functions.
(stub_gnu_ifunc_fns, gnu_ifunc_fns_p): New variables.
* symtab.h (struct gnu_ifunc_fns, gnu_ifunc_resolve_addr)
(gnu_ifunc_resolve_name, gnu_ifunc_fns_p): New.
2011-03-29 04:26:24 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
do_cleanups (back_to);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* The data pointer is htab_t for gnu_ifunc_record_cache_unchecked. */
|
|
|
|
|
|
|
|
|
|
|
|
static const struct objfile_data *elf_objfile_gnu_ifunc_cache_data;
|
|
|
|
|
|
|
|
|
|
|
|
/* Map function names to CORE_ADDR in elf_objfile_gnu_ifunc_cache_data. */
|
|
|
|
|
|
|
|
|
|
|
|
struct elf_gnu_ifunc_cache
|
|
|
|
|
|
{
|
|
|
|
|
|
/* This is always a function entry address, not a function descriptor. */
|
|
|
|
|
|
CORE_ADDR addr;
|
|
|
|
|
|
|
|
|
|
|
|
char name[1];
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
/* htab_hash for elf_objfile_gnu_ifunc_cache_data. */
|
|
|
|
|
|
|
|
|
|
|
|
static hashval_t
|
|
|
|
|
|
elf_gnu_ifunc_cache_hash (const void *a_voidp)
|
|
|
|
|
|
{
|
|
|
|
|
|
const struct elf_gnu_ifunc_cache *a = a_voidp;
|
|
|
|
|
|
|
|
|
|
|
|
return htab_hash_string (a->name);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* htab_eq for elf_objfile_gnu_ifunc_cache_data. */
|
|
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
|
|
elf_gnu_ifunc_cache_eq (const void *a_voidp, const void *b_voidp)
|
|
|
|
|
|
{
|
|
|
|
|
|
const struct elf_gnu_ifunc_cache *a = a_voidp;
|
|
|
|
|
|
const struct elf_gnu_ifunc_cache *b = b_voidp;
|
|
|
|
|
|
|
|
|
|
|
|
return strcmp (a->name, b->name) == 0;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* Record the target function address of a STT_GNU_IFUNC function NAME is the
|
|
|
|
|
|
function entry address ADDR. Return 1 if NAME and ADDR are considered as
|
|
|
|
|
|
valid and therefore they were successfully recorded, return 0 otherwise.
|
|
|
|
|
|
|
|
|
|
|
|
Function does not expect a duplicate entry. Use
|
|
|
|
|
|
elf_gnu_ifunc_resolve_by_cache first to check if the entry for NAME already
|
|
|
|
|
|
exists. */
|
|
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
|
|
elf_gnu_ifunc_record_cache (const char *name, CORE_ADDR addr)
|
|
|
|
|
|
{
|
* minsyms.h (struct bound_minimal_symbol): New.
(lookup_minimal_symbol_and_objfile): Return bound_minimal_symbol.
Remove objfile argument.
(lookup_minimal_symbol_by_pc_section, lookup_minimal_symbol_by_pc):
Return bound_minimal_symbol.
* minsyms.c (lookup_minimal_symbol_by_pc_1)
(lookup_minimal_symbol_by_pc_section, lookup_minimal_symbol_by_pc):
Return bound_minimal_symbol.
(in_gnu_ifunc_stub): Update.
(lookup_minimal_symbol_and_objfile): Return bound_minimal_symbol.
Remove 'objfile_p' argument.
(lookup_solib_trampoline_symbol_by_pc): Update.
* ada-tasks.c, amd64-windows-tdep.c, arm-tdep.c,
arm-wince-tdep.c, block.c, blockframe.c, breakpoint.c, btrace.c,
c-valprint.c, dwarf2loc.c, elfread.c, frame.c, frv-tdep.c,
glibc-tdep.c, gnu-v2-abi.c, gnu-v3-abi.c, hppa-hpux-tdep.c,
i386-tdep.c, ia64-tdep.c, infcall.c, infcmd.c, jit.c,
linux-fork.c, m32c-tdep.c, m68hc11-tdep.c, maint.c,
mips-tdep.c, p-valprint.c, parse.c, ppc-linux-tdep.c,
ppc-sysv-tdep.c, printcmd.c, rs6000-tdep.c, sh64-tdep.c,
stack.c, symtab.c, tui/tui-disasm.c: Update.
2013-04-09 03:59:09 +08:00
|
|
|
|
struct bound_minimal_symbol msym;
|
gdb/
STT_GNU_IFUNC reader implementation.
* elfread.c: Include gdbtypes.h, value.h and infcall.h.
(SYMBOL_GOT_PLT_SUFFIX, elf_rel_plt_read)
(elf_objfile_gnu_ifunc_cache_data, struct elf_gnu_ifunc_cache)
(elf_gnu_ifunc_cache_hash, elf_gnu_ifunc_cache_eq)
(elf_gnu_ifunc_record_cache, elf_gnu_ifunc_resolve_by_cache)
(elf_gnu_ifunc_resolve_by_got, elf_gnu_ifunc_resolve_name)
(elf_gnu_ifunc_resolve_addr): New.
(elf_symfile_read): Call elf_rel_plt_read.
(elf_gnu_ifunc_fns): New.
(_initialize_elfread): Initialize elf_objfile_gnu_ifunc_cache_data.
Install elf_gnu_ifunc_fns.
* infcall.c (find_function_return_type): New function.
(find_function_addr): Resolve TYPE_GNU_IFUNC functions, if possible.
* minsyms.c (stub_gnu_ifunc_resolve_addr)
(stub_gnu_ifunc_resolve_name): New functions.
(stub_gnu_ifunc_fns, gnu_ifunc_fns_p): New variables.
* symtab.h (struct gnu_ifunc_fns, gnu_ifunc_resolve_addr)
(gnu_ifunc_resolve_name, gnu_ifunc_fns_p): New.
2011-03-29 04:26:24 +08:00
|
|
|
|
asection *sect;
|
|
|
|
|
|
struct objfile *objfile;
|
|
|
|
|
|
htab_t htab;
|
|
|
|
|
|
struct elf_gnu_ifunc_cache entry_local, *entry_p;
|
|
|
|
|
|
void **slot;
|
|
|
|
|
|
|
|
|
|
|
|
msym = lookup_minimal_symbol_by_pc (addr);
|
* minsyms.h (struct bound_minimal_symbol): New.
(lookup_minimal_symbol_and_objfile): Return bound_minimal_symbol.
Remove objfile argument.
(lookup_minimal_symbol_by_pc_section, lookup_minimal_symbol_by_pc):
Return bound_minimal_symbol.
* minsyms.c (lookup_minimal_symbol_by_pc_1)
(lookup_minimal_symbol_by_pc_section, lookup_minimal_symbol_by_pc):
Return bound_minimal_symbol.
(in_gnu_ifunc_stub): Update.
(lookup_minimal_symbol_and_objfile): Return bound_minimal_symbol.
Remove 'objfile_p' argument.
(lookup_solib_trampoline_symbol_by_pc): Update.
* ada-tasks.c, amd64-windows-tdep.c, arm-tdep.c,
arm-wince-tdep.c, block.c, blockframe.c, breakpoint.c, btrace.c,
c-valprint.c, dwarf2loc.c, elfread.c, frame.c, frv-tdep.c,
glibc-tdep.c, gnu-v2-abi.c, gnu-v3-abi.c, hppa-hpux-tdep.c,
i386-tdep.c, ia64-tdep.c, infcall.c, infcmd.c, jit.c,
linux-fork.c, m32c-tdep.c, m68hc11-tdep.c, maint.c,
mips-tdep.c, p-valprint.c, parse.c, ppc-linux-tdep.c,
ppc-sysv-tdep.c, printcmd.c, rs6000-tdep.c, sh64-tdep.c,
stack.c, symtab.c, tui/tui-disasm.c: Update.
2013-04-09 03:59:09 +08:00
|
|
|
|
if (msym.minsym == NULL)
|
gdb/
STT_GNU_IFUNC reader implementation.
* elfread.c: Include gdbtypes.h, value.h and infcall.h.
(SYMBOL_GOT_PLT_SUFFIX, elf_rel_plt_read)
(elf_objfile_gnu_ifunc_cache_data, struct elf_gnu_ifunc_cache)
(elf_gnu_ifunc_cache_hash, elf_gnu_ifunc_cache_eq)
(elf_gnu_ifunc_record_cache, elf_gnu_ifunc_resolve_by_cache)
(elf_gnu_ifunc_resolve_by_got, elf_gnu_ifunc_resolve_name)
(elf_gnu_ifunc_resolve_addr): New.
(elf_symfile_read): Call elf_rel_plt_read.
(elf_gnu_ifunc_fns): New.
(_initialize_elfread): Initialize elf_objfile_gnu_ifunc_cache_data.
Install elf_gnu_ifunc_fns.
* infcall.c (find_function_return_type): New function.
(find_function_addr): Resolve TYPE_GNU_IFUNC functions, if possible.
* minsyms.c (stub_gnu_ifunc_resolve_addr)
(stub_gnu_ifunc_resolve_name): New functions.
(stub_gnu_ifunc_fns, gnu_ifunc_fns_p): New variables.
* symtab.h (struct gnu_ifunc_fns, gnu_ifunc_resolve_addr)
(gnu_ifunc_resolve_name, gnu_ifunc_fns_p): New.
2011-03-29 04:26:24 +08:00
|
|
|
|
return 0;
|
* minsyms.h (struct bound_minimal_symbol): New.
(lookup_minimal_symbol_and_objfile): Return bound_minimal_symbol.
Remove objfile argument.
(lookup_minimal_symbol_by_pc_section, lookup_minimal_symbol_by_pc):
Return bound_minimal_symbol.
* minsyms.c (lookup_minimal_symbol_by_pc_1)
(lookup_minimal_symbol_by_pc_section, lookup_minimal_symbol_by_pc):
Return bound_minimal_symbol.
(in_gnu_ifunc_stub): Update.
(lookup_minimal_symbol_and_objfile): Return bound_minimal_symbol.
Remove 'objfile_p' argument.
(lookup_solib_trampoline_symbol_by_pc): Update.
* ada-tasks.c, amd64-windows-tdep.c, arm-tdep.c,
arm-wince-tdep.c, block.c, blockframe.c, breakpoint.c, btrace.c,
c-valprint.c, dwarf2loc.c, elfread.c, frame.c, frv-tdep.c,
glibc-tdep.c, gnu-v2-abi.c, gnu-v3-abi.c, hppa-hpux-tdep.c,
i386-tdep.c, ia64-tdep.c, infcall.c, infcmd.c, jit.c,
linux-fork.c, m32c-tdep.c, m68hc11-tdep.c, maint.c,
mips-tdep.c, p-valprint.c, parse.c, ppc-linux-tdep.c,
ppc-sysv-tdep.c, printcmd.c, rs6000-tdep.c, sh64-tdep.c,
stack.c, symtab.c, tui/tui-disasm.c: Update.
2013-04-09 03:59:09 +08:00
|
|
|
|
if (SYMBOL_VALUE_ADDRESS (msym.minsym) != addr)
|
gdb/
STT_GNU_IFUNC reader implementation.
* elfread.c: Include gdbtypes.h, value.h and infcall.h.
(SYMBOL_GOT_PLT_SUFFIX, elf_rel_plt_read)
(elf_objfile_gnu_ifunc_cache_data, struct elf_gnu_ifunc_cache)
(elf_gnu_ifunc_cache_hash, elf_gnu_ifunc_cache_eq)
(elf_gnu_ifunc_record_cache, elf_gnu_ifunc_resolve_by_cache)
(elf_gnu_ifunc_resolve_by_got, elf_gnu_ifunc_resolve_name)
(elf_gnu_ifunc_resolve_addr): New.
(elf_symfile_read): Call elf_rel_plt_read.
(elf_gnu_ifunc_fns): New.
(_initialize_elfread): Initialize elf_objfile_gnu_ifunc_cache_data.
Install elf_gnu_ifunc_fns.
* infcall.c (find_function_return_type): New function.
(find_function_addr): Resolve TYPE_GNU_IFUNC functions, if possible.
* minsyms.c (stub_gnu_ifunc_resolve_addr)
(stub_gnu_ifunc_resolve_name): New functions.
(stub_gnu_ifunc_fns, gnu_ifunc_fns_p): New variables.
* symtab.h (struct gnu_ifunc_fns, gnu_ifunc_resolve_addr)
(gnu_ifunc_resolve_name, gnu_ifunc_fns_p): New.
2011-03-29 04:26:24 +08:00
|
|
|
|
return 0;
|
|
|
|
|
|
/* minimal symbols have always SYMBOL_OBJ_SECTION non-NULL. */
|
2013-04-09 04:18:11 +08:00
|
|
|
|
sect = SYMBOL_OBJ_SECTION (msym.objfile, msym.minsym)->the_bfd_section;
|
|
|
|
|
|
objfile = msym.objfile;
|
gdb/
STT_GNU_IFUNC reader implementation.
* elfread.c: Include gdbtypes.h, value.h and infcall.h.
(SYMBOL_GOT_PLT_SUFFIX, elf_rel_plt_read)
(elf_objfile_gnu_ifunc_cache_data, struct elf_gnu_ifunc_cache)
(elf_gnu_ifunc_cache_hash, elf_gnu_ifunc_cache_eq)
(elf_gnu_ifunc_record_cache, elf_gnu_ifunc_resolve_by_cache)
(elf_gnu_ifunc_resolve_by_got, elf_gnu_ifunc_resolve_name)
(elf_gnu_ifunc_resolve_addr): New.
(elf_symfile_read): Call elf_rel_plt_read.
(elf_gnu_ifunc_fns): New.
(_initialize_elfread): Initialize elf_objfile_gnu_ifunc_cache_data.
Install elf_gnu_ifunc_fns.
* infcall.c (find_function_return_type): New function.
(find_function_addr): Resolve TYPE_GNU_IFUNC functions, if possible.
* minsyms.c (stub_gnu_ifunc_resolve_addr)
(stub_gnu_ifunc_resolve_name): New functions.
(stub_gnu_ifunc_fns, gnu_ifunc_fns_p): New variables.
* symtab.h (struct gnu_ifunc_fns, gnu_ifunc_resolve_addr)
(gnu_ifunc_resolve_name, gnu_ifunc_fns_p): New.
2011-03-29 04:26:24 +08:00
|
|
|
|
|
|
|
|
|
|
/* If .plt jumps back to .plt the symbol is still deferred for later
|
|
|
|
|
|
resolution and it has no use for GDB. Besides ".text" this symbol can
|
|
|
|
|
|
reside also in ".opd" for ppc64 function descriptor. */
|
|
|
|
|
|
if (strcmp (bfd_get_section_name (objfile->obfd, sect), ".plt") == 0)
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
|
|
htab = objfile_data (objfile, elf_objfile_gnu_ifunc_cache_data);
|
|
|
|
|
|
if (htab == NULL)
|
|
|
|
|
|
{
|
|
|
|
|
|
htab = htab_create_alloc_ex (1, elf_gnu_ifunc_cache_hash,
|
|
|
|
|
|
elf_gnu_ifunc_cache_eq,
|
|
|
|
|
|
NULL, &objfile->objfile_obstack,
|
|
|
|
|
|
hashtab_obstack_allocate,
|
|
|
|
|
|
dummy_obstack_deallocate);
|
|
|
|
|
|
set_objfile_data (objfile, elf_objfile_gnu_ifunc_cache_data, htab);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
entry_local.addr = addr;
|
|
|
|
|
|
obstack_grow (&objfile->objfile_obstack, &entry_local,
|
|
|
|
|
|
offsetof (struct elf_gnu_ifunc_cache, name));
|
|
|
|
|
|
obstack_grow_str0 (&objfile->objfile_obstack, name);
|
|
|
|
|
|
entry_p = obstack_finish (&objfile->objfile_obstack);
|
|
|
|
|
|
|
|
|
|
|
|
slot = htab_find_slot (htab, entry_p, INSERT);
|
|
|
|
|
|
if (*slot != NULL)
|
|
|
|
|
|
{
|
|
|
|
|
|
struct elf_gnu_ifunc_cache *entry_found_p = *slot;
|
2013-08-20 23:04:51 +08:00
|
|
|
|
struct gdbarch *gdbarch = get_objfile_arch (objfile);
|
gdb/
STT_GNU_IFUNC reader implementation.
* elfread.c: Include gdbtypes.h, value.h and infcall.h.
(SYMBOL_GOT_PLT_SUFFIX, elf_rel_plt_read)
(elf_objfile_gnu_ifunc_cache_data, struct elf_gnu_ifunc_cache)
(elf_gnu_ifunc_cache_hash, elf_gnu_ifunc_cache_eq)
(elf_gnu_ifunc_record_cache, elf_gnu_ifunc_resolve_by_cache)
(elf_gnu_ifunc_resolve_by_got, elf_gnu_ifunc_resolve_name)
(elf_gnu_ifunc_resolve_addr): New.
(elf_symfile_read): Call elf_rel_plt_read.
(elf_gnu_ifunc_fns): New.
(_initialize_elfread): Initialize elf_objfile_gnu_ifunc_cache_data.
Install elf_gnu_ifunc_fns.
* infcall.c (find_function_return_type): New function.
(find_function_addr): Resolve TYPE_GNU_IFUNC functions, if possible.
* minsyms.c (stub_gnu_ifunc_resolve_addr)
(stub_gnu_ifunc_resolve_name): New functions.
(stub_gnu_ifunc_fns, gnu_ifunc_fns_p): New variables.
* symtab.h (struct gnu_ifunc_fns, gnu_ifunc_resolve_addr)
(gnu_ifunc_resolve_name, gnu_ifunc_fns_p): New.
2011-03-29 04:26:24 +08:00
|
|
|
|
|
|
|
|
|
|
if (entry_found_p->addr != addr)
|
|
|
|
|
|
{
|
|
|
|
|
|
/* This case indicates buggy inferior program, the resolved address
|
|
|
|
|
|
should never change. */
|
|
|
|
|
|
|
|
|
|
|
|
warning (_("gnu-indirect-function \"%s\" has changed its resolved "
|
|
|
|
|
|
"function_address from %s to %s"),
|
|
|
|
|
|
name, paddress (gdbarch, entry_found_p->addr),
|
|
|
|
|
|
paddress (gdbarch, addr));
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* New ENTRY_P is here leaked/duplicate in the OBJFILE obstack. */
|
|
|
|
|
|
}
|
|
|
|
|
|
*slot = entry_p;
|
|
|
|
|
|
|
|
|
|
|
|
return 1;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* Try to find the target resolved function entry address of a STT_GNU_IFUNC
|
|
|
|
|
|
function NAME. If the address is found it is stored to *ADDR_P (if ADDR_P
|
|
|
|
|
|
is not NULL) and the function returns 1. It returns 0 otherwise.
|
|
|
|
|
|
|
|
|
|
|
|
Only the elf_objfile_gnu_ifunc_cache_data hash table is searched by this
|
|
|
|
|
|
function. */
|
|
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
|
|
elf_gnu_ifunc_resolve_by_cache (const char *name, CORE_ADDR *addr_p)
|
|
|
|
|
|
{
|
|
|
|
|
|
struct objfile *objfile;
|
|
|
|
|
|
|
|
|
|
|
|
ALL_PSPACE_OBJFILES (current_program_space, objfile)
|
|
|
|
|
|
{
|
|
|
|
|
|
htab_t htab;
|
|
|
|
|
|
struct elf_gnu_ifunc_cache *entry_p;
|
|
|
|
|
|
void **slot;
|
|
|
|
|
|
|
|
|
|
|
|
htab = objfile_data (objfile, elf_objfile_gnu_ifunc_cache_data);
|
|
|
|
|
|
if (htab == NULL)
|
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
|
|
entry_p = alloca (sizeof (*entry_p) + strlen (name));
|
|
|
|
|
|
strcpy (entry_p->name, name);
|
|
|
|
|
|
|
|
|
|
|
|
slot = htab_find_slot (htab, entry_p, NO_INSERT);
|
|
|
|
|
|
if (slot == NULL)
|
|
|
|
|
|
continue;
|
|
|
|
|
|
entry_p = *slot;
|
|
|
|
|
|
gdb_assert (entry_p != NULL);
|
|
|
|
|
|
|
|
|
|
|
|
if (addr_p)
|
|
|
|
|
|
*addr_p = entry_p->addr;
|
|
|
|
|
|
return 1;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* Try to find the target resolved function entry address of a STT_GNU_IFUNC
|
|
|
|
|
|
function NAME. If the address is found it is stored to *ADDR_P (if ADDR_P
|
|
|
|
|
|
is not NULL) and the function returns 1. It returns 0 otherwise.
|
|
|
|
|
|
|
|
|
|
|
|
Only the SYMBOL_GOT_PLT_SUFFIX locations are searched by this function.
|
|
|
|
|
|
elf_gnu_ifunc_resolve_by_cache must have been already called for NAME to
|
|
|
|
|
|
prevent cache entries duplicates. */
|
|
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
|
|
elf_gnu_ifunc_resolve_by_got (const char *name, CORE_ADDR *addr_p)
|
|
|
|
|
|
{
|
|
|
|
|
|
char *name_got_plt;
|
|
|
|
|
|
struct objfile *objfile;
|
|
|
|
|
|
const size_t got_suffix_len = strlen (SYMBOL_GOT_PLT_SUFFIX);
|
|
|
|
|
|
|
|
|
|
|
|
name_got_plt = alloca (strlen (name) + got_suffix_len + 1);
|
|
|
|
|
|
sprintf (name_got_plt, "%s" SYMBOL_GOT_PLT_SUFFIX, name);
|
|
|
|
|
|
|
|
|
|
|
|
ALL_PSPACE_OBJFILES (current_program_space, objfile)
|
|
|
|
|
|
{
|
|
|
|
|
|
bfd *obfd = objfile->obfd;
|
2013-08-20 23:04:51 +08:00
|
|
|
|
struct gdbarch *gdbarch = get_objfile_arch (objfile);
|
gdb/
STT_GNU_IFUNC reader implementation.
* elfread.c: Include gdbtypes.h, value.h and infcall.h.
(SYMBOL_GOT_PLT_SUFFIX, elf_rel_plt_read)
(elf_objfile_gnu_ifunc_cache_data, struct elf_gnu_ifunc_cache)
(elf_gnu_ifunc_cache_hash, elf_gnu_ifunc_cache_eq)
(elf_gnu_ifunc_record_cache, elf_gnu_ifunc_resolve_by_cache)
(elf_gnu_ifunc_resolve_by_got, elf_gnu_ifunc_resolve_name)
(elf_gnu_ifunc_resolve_addr): New.
(elf_symfile_read): Call elf_rel_plt_read.
(elf_gnu_ifunc_fns): New.
(_initialize_elfread): Initialize elf_objfile_gnu_ifunc_cache_data.
Install elf_gnu_ifunc_fns.
* infcall.c (find_function_return_type): New function.
(find_function_addr): Resolve TYPE_GNU_IFUNC functions, if possible.
* minsyms.c (stub_gnu_ifunc_resolve_addr)
(stub_gnu_ifunc_resolve_name): New functions.
(stub_gnu_ifunc_fns, gnu_ifunc_fns_p): New variables.
* symtab.h (struct gnu_ifunc_fns, gnu_ifunc_resolve_addr)
(gnu_ifunc_resolve_name, gnu_ifunc_fns_p): New.
2011-03-29 04:26:24 +08:00
|
|
|
|
struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr;
|
|
|
|
|
|
size_t ptr_size = TYPE_LENGTH (ptr_type);
|
|
|
|
|
|
CORE_ADDR pointer_address, addr;
|
|
|
|
|
|
asection *plt;
|
|
|
|
|
|
gdb_byte *buf = alloca (ptr_size);
|
|
|
|
|
|
struct minimal_symbol *msym;
|
|
|
|
|
|
|
|
|
|
|
|
msym = lookup_minimal_symbol (name_got_plt, NULL, objfile);
|
|
|
|
|
|
if (msym == NULL)
|
|
|
|
|
|
continue;
|
|
|
|
|
|
if (MSYMBOL_TYPE (msym) != mst_slot_got_plt)
|
|
|
|
|
|
continue;
|
|
|
|
|
|
pointer_address = SYMBOL_VALUE_ADDRESS (msym);
|
|
|
|
|
|
|
|
|
|
|
|
plt = bfd_get_section_by_name (obfd, ".plt");
|
|
|
|
|
|
if (plt == NULL)
|
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
|
|
if (MSYMBOL_SIZE (msym) != ptr_size)
|
|
|
|
|
|
continue;
|
|
|
|
|
|
if (target_read_memory (pointer_address, buf, ptr_size) != 0)
|
|
|
|
|
|
continue;
|
|
|
|
|
|
addr = extract_typed_address (buf, ptr_type);
|
|
|
|
|
|
addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr,
|
|
|
|
|
|
¤t_target);
|
|
|
|
|
|
|
|
|
|
|
|
if (addr_p)
|
|
|
|
|
|
*addr_p = addr;
|
|
|
|
|
|
if (elf_gnu_ifunc_record_cache (name, addr))
|
|
|
|
|
|
return 1;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* Try to find the target resolved function entry address of a STT_GNU_IFUNC
|
|
|
|
|
|
function NAME. If the address is found it is stored to *ADDR_P (if ADDR_P
|
|
|
|
|
|
is not NULL) and the function returns 1. It returns 0 otherwise.
|
|
|
|
|
|
|
|
|
|
|
|
Both the elf_objfile_gnu_ifunc_cache_data hash table and
|
|
|
|
|
|
SYMBOL_GOT_PLT_SUFFIX locations are searched by this function. */
|
|
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
|
|
elf_gnu_ifunc_resolve_name (const char *name, CORE_ADDR *addr_p)
|
|
|
|
|
|
{
|
|
|
|
|
|
if (elf_gnu_ifunc_resolve_by_cache (name, addr_p))
|
|
|
|
|
|
return 1;
|
2011-07-26 06:23:38 +08:00
|
|
|
|
|
gdb/
STT_GNU_IFUNC reader implementation.
* elfread.c: Include gdbtypes.h, value.h and infcall.h.
(SYMBOL_GOT_PLT_SUFFIX, elf_rel_plt_read)
(elf_objfile_gnu_ifunc_cache_data, struct elf_gnu_ifunc_cache)
(elf_gnu_ifunc_cache_hash, elf_gnu_ifunc_cache_eq)
(elf_gnu_ifunc_record_cache, elf_gnu_ifunc_resolve_by_cache)
(elf_gnu_ifunc_resolve_by_got, elf_gnu_ifunc_resolve_name)
(elf_gnu_ifunc_resolve_addr): New.
(elf_symfile_read): Call elf_rel_plt_read.
(elf_gnu_ifunc_fns): New.
(_initialize_elfread): Initialize elf_objfile_gnu_ifunc_cache_data.
Install elf_gnu_ifunc_fns.
* infcall.c (find_function_return_type): New function.
(find_function_addr): Resolve TYPE_GNU_IFUNC functions, if possible.
* minsyms.c (stub_gnu_ifunc_resolve_addr)
(stub_gnu_ifunc_resolve_name): New functions.
(stub_gnu_ifunc_fns, gnu_ifunc_fns_p): New variables.
* symtab.h (struct gnu_ifunc_fns, gnu_ifunc_resolve_addr)
(gnu_ifunc_resolve_name, gnu_ifunc_fns_p): New.
2011-03-29 04:26:24 +08:00
|
|
|
|
if (elf_gnu_ifunc_resolve_by_got (name, addr_p))
|
|
|
|
|
|
return 1;
|
|
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* Call STT_GNU_IFUNC - a function returning addresss of a real function to
|
|
|
|
|
|
call. PC is theSTT_GNU_IFUNC resolving function entry. The value returned
|
|
|
|
|
|
is the entry point of the resolved STT_GNU_IFUNC target function to call.
|
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
static CORE_ADDR
|
|
|
|
|
|
elf_gnu_ifunc_resolve_addr (struct gdbarch *gdbarch, CORE_ADDR pc)
|
|
|
|
|
|
{
|
2012-02-03 04:19:17 +08:00
|
|
|
|
const char *name_at_pc;
|
gdb/
STT_GNU_IFUNC reader implementation.
* elfread.c: Include gdbtypes.h, value.h and infcall.h.
(SYMBOL_GOT_PLT_SUFFIX, elf_rel_plt_read)
(elf_objfile_gnu_ifunc_cache_data, struct elf_gnu_ifunc_cache)
(elf_gnu_ifunc_cache_hash, elf_gnu_ifunc_cache_eq)
(elf_gnu_ifunc_record_cache, elf_gnu_ifunc_resolve_by_cache)
(elf_gnu_ifunc_resolve_by_got, elf_gnu_ifunc_resolve_name)
(elf_gnu_ifunc_resolve_addr): New.
(elf_symfile_read): Call elf_rel_plt_read.
(elf_gnu_ifunc_fns): New.
(_initialize_elfread): Initialize elf_objfile_gnu_ifunc_cache_data.
Install elf_gnu_ifunc_fns.
* infcall.c (find_function_return_type): New function.
(find_function_addr): Resolve TYPE_GNU_IFUNC functions, if possible.
* minsyms.c (stub_gnu_ifunc_resolve_addr)
(stub_gnu_ifunc_resolve_name): New functions.
(stub_gnu_ifunc_fns, gnu_ifunc_fns_p): New variables.
* symtab.h (struct gnu_ifunc_fns, gnu_ifunc_resolve_addr)
(gnu_ifunc_resolve_name, gnu_ifunc_fns_p): New.
2011-03-29 04:26:24 +08:00
|
|
|
|
CORE_ADDR start_at_pc, address;
|
|
|
|
|
|
struct type *func_func_type = builtin_type (gdbarch)->builtin_func_func;
|
|
|
|
|
|
struct value *function, *address_val;
|
|
|
|
|
|
|
|
|
|
|
|
/* Try first any non-intrusive methods without an inferior call. */
|
|
|
|
|
|
|
|
|
|
|
|
if (find_pc_partial_function (pc, &name_at_pc, &start_at_pc, NULL)
|
|
|
|
|
|
&& start_at_pc == pc)
|
|
|
|
|
|
{
|
|
|
|
|
|
if (elf_gnu_ifunc_resolve_name (name_at_pc, &address))
|
|
|
|
|
|
return address;
|
|
|
|
|
|
}
|
|
|
|
|
|
else
|
|
|
|
|
|
name_at_pc = NULL;
|
|
|
|
|
|
|
|
|
|
|
|
function = allocate_value (func_func_type);
|
|
|
|
|
|
set_value_address (function, pc);
|
|
|
|
|
|
|
|
|
|
|
|
/* STT_GNU_IFUNC resolver functions have no parameters. FUNCTION is the
|
|
|
|
|
|
function entry address. ADDRESS may be a function descriptor. */
|
|
|
|
|
|
|
|
|
|
|
|
address_val = call_function_by_hand (function, 0, NULL);
|
|
|
|
|
|
address = value_as_address (address_val);
|
|
|
|
|
|
address = gdbarch_convert_from_func_ptr_addr (gdbarch, address,
|
|
|
|
|
|
¤t_target);
|
|
|
|
|
|
|
|
|
|
|
|
if (name_at_pc)
|
|
|
|
|
|
elf_gnu_ifunc_record_cache (name_at_pc, address);
|
|
|
|
|
|
|
|
|
|
|
|
return address;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
2011-03-29 04:29:51 +08:00
|
|
|
|
/* Handle inferior hit of bp_gnu_ifunc_resolver, see its definition. */
|
|
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
|
elf_gnu_ifunc_resolver_stop (struct breakpoint *b)
|
|
|
|
|
|
{
|
|
|
|
|
|
struct breakpoint *b_return;
|
|
|
|
|
|
struct frame_info *prev_frame = get_prev_frame (get_current_frame ());
|
|
|
|
|
|
struct frame_id prev_frame_id = get_stack_frame_id (prev_frame);
|
|
|
|
|
|
CORE_ADDR prev_pc = get_frame_pc (prev_frame);
|
|
|
|
|
|
int thread_id = pid_to_thread_id (inferior_ptid);
|
|
|
|
|
|
|
|
|
|
|
|
gdb_assert (b->type == bp_gnu_ifunc_resolver);
|
|
|
|
|
|
|
|
|
|
|
|
for (b_return = b->related_breakpoint; b_return != b;
|
|
|
|
|
|
b_return = b_return->related_breakpoint)
|
|
|
|
|
|
{
|
|
|
|
|
|
gdb_assert (b_return->type == bp_gnu_ifunc_resolver_return);
|
|
|
|
|
|
gdb_assert (b_return->loc != NULL && b_return->loc->next == NULL);
|
|
|
|
|
|
gdb_assert (frame_id_p (b_return->frame_id));
|
|
|
|
|
|
|
|
|
|
|
|
if (b_return->thread == thread_id
|
|
|
|
|
|
&& b_return->loc->requested_address == prev_pc
|
|
|
|
|
|
&& frame_id_eq (b_return->frame_id, prev_frame_id))
|
|
|
|
|
|
break;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (b_return == b)
|
|
|
|
|
|
{
|
|
|
|
|
|
struct symtab_and_line sal;
|
|
|
|
|
|
|
|
|
|
|
|
/* No need to call find_pc_line for symbols resolving as this is only
|
|
|
|
|
|
a helper breakpointer never shown to the user. */
|
|
|
|
|
|
|
|
|
|
|
|
init_sal (&sal);
|
|
|
|
|
|
sal.pspace = current_inferior ()->pspace;
|
|
|
|
|
|
sal.pc = prev_pc;
|
|
|
|
|
|
sal.section = find_pc_overlay (sal.pc);
|
|
|
|
|
|
sal.explicit_pc = 1;
|
|
|
|
|
|
b_return = set_momentary_breakpoint (get_frame_arch (prev_frame), sal,
|
|
|
|
|
|
prev_frame_id,
|
|
|
|
|
|
bp_gnu_ifunc_resolver_return);
|
|
|
|
|
|
|
2012-02-29 22:52:44 +08:00
|
|
|
|
/* set_momentary_breakpoint invalidates PREV_FRAME. */
|
|
|
|
|
|
prev_frame = NULL;
|
|
|
|
|
|
|
2011-03-29 04:29:51 +08:00
|
|
|
|
/* Add new b_return to the ring list b->related_breakpoint. */
|
|
|
|
|
|
gdb_assert (b_return->related_breakpoint == b_return);
|
|
|
|
|
|
b_return->related_breakpoint = b->related_breakpoint;
|
|
|
|
|
|
b->related_breakpoint = b_return;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* Handle inferior hit of bp_gnu_ifunc_resolver_return, see its definition. */
|
|
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
|
elf_gnu_ifunc_resolver_return_stop (struct breakpoint *b)
|
|
|
|
|
|
{
|
|
|
|
|
|
struct gdbarch *gdbarch = get_frame_arch (get_current_frame ());
|
|
|
|
|
|
struct type *func_func_type = builtin_type (gdbarch)->builtin_func_func;
|
|
|
|
|
|
struct type *value_type = TYPE_TARGET_TYPE (func_func_type);
|
|
|
|
|
|
struct regcache *regcache = get_thread_regcache (inferior_ptid);
|
2012-05-16 22:35:09 +08:00
|
|
|
|
struct value *func_func;
|
2011-03-29 04:29:51 +08:00
|
|
|
|
struct value *value;
|
|
|
|
|
|
CORE_ADDR resolved_address, resolved_pc;
|
|
|
|
|
|
struct symtab_and_line sal;
|
2011-03-31 22:32:49 +08:00
|
|
|
|
struct symtabs_and_lines sals, sals_end;
|
2011-03-29 04:29:51 +08:00
|
|
|
|
|
|
|
|
|
|
gdb_assert (b->type == bp_gnu_ifunc_resolver_return);
|
|
|
|
|
|
|
|
|
|
|
|
while (b->related_breakpoint != b)
|
|
|
|
|
|
{
|
|
|
|
|
|
struct breakpoint *b_next = b->related_breakpoint;
|
|
|
|
|
|
|
|
|
|
|
|
switch (b->type)
|
|
|
|
|
|
{
|
|
|
|
|
|
case bp_gnu_ifunc_resolver:
|
|
|
|
|
|
break;
|
|
|
|
|
|
case bp_gnu_ifunc_resolver_return:
|
|
|
|
|
|
delete_breakpoint (b);
|
|
|
|
|
|
break;
|
|
|
|
|
|
default:
|
|
|
|
|
|
internal_error (__FILE__, __LINE__,
|
|
|
|
|
|
_("handle_inferior_event: Invalid "
|
|
|
|
|
|
"gnu-indirect-function breakpoint type %d"),
|
|
|
|
|
|
(int) b->type);
|
|
|
|
|
|
}
|
|
|
|
|
|
b = b_next;
|
|
|
|
|
|
}
|
|
|
|
|
|
gdb_assert (b->type == bp_gnu_ifunc_resolver);
|
2012-05-16 22:35:09 +08:00
|
|
|
|
gdb_assert (b->loc->next == NULL);
|
|
|
|
|
|
|
|
|
|
|
|
func_func = allocate_value (func_func_type);
|
|
|
|
|
|
set_value_address (func_func, b->loc->related_address);
|
|
|
|
|
|
|
|
|
|
|
|
value = allocate_value (value_type);
|
|
|
|
|
|
gdbarch_return_value (gdbarch, func_func, value_type, regcache,
|
|
|
|
|
|
value_contents_raw (value), NULL);
|
|
|
|
|
|
resolved_address = value_as_address (value);
|
|
|
|
|
|
resolved_pc = gdbarch_convert_from_func_ptr_addr (gdbarch,
|
|
|
|
|
|
resolved_address,
|
|
|
|
|
|
¤t_target);
|
2011-03-29 04:29:51 +08:00
|
|
|
|
|
the "ambiguous linespec" series
gdb
2011-12-06 Joel Brobecker <brobecker@acacore.com>
* language.h (struct language_defn): Add new component
la_symbol_name_compare.
* symfile.h (struct quick_symbol_functions): Update the profile
of parameter "name_matcher" for the expand_symtabs_matching
method. Update the documentation accordingly.
* ada-lang.h (ada_name_for_lookup): Add declaration.
* ada-lang.c (ada_name_for_lookup): New function, extracted out
from ada_iterate_over_symbols.
(ada_iterate_over_symbols): Do not encode symbol name anymore.
(ada_expand_partial_symbol_name): Adjust profile.
(ada_language_defn): Add value for la_symbol_name_compare field.
* linespec.c: #include "ada-lang.h".
(iterate_name_matcher): Add language parameter. Replace call
to strcmp_iw by call to language->la_symbol_name_compare.
(decode_variable): Encode COPY if current language is Ada.
* dwarf2read.c (dw2_expand_symtabs_matching): Adjust profile
of name_matcher parameter. Adjust call to name_matcher.
* psymtab.c (expand_symtabs_matching_via_partial): Likewise.
(expand_partial_symbol_names): Update profile of parameter "fun".
* psymtab.h (expand_partial_symbol_names): Update profile of
parameter "fun".
* symtab.c (demangle_for_lookup): Update function documentation.
(search_symbols_name_matches): Add language parameter.
(expand_partial_symbol_name): Likewise.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Add value for
la_symbol_name_compare field.
* d-lang.c (d_language_defn): Likewise.
* f-lang.c (f_language_defn): Ditto.
* jv-lang.c (java_language_defn): Ditto.
* m2-lang.c (m2_language_defn): Ditto.
* objc-lang.c (objc_language_defn): Ditto.
* opencl-lang.c (opencl_language_defn): Ditto.
* p-lang.c (pascal_language_defn): Ditto.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Ditto.
2011-12-06 Tom Tromey <tromey@redhat.com>
* linespec.c (iterate_over_all_matching_symtabs): Use
LA_ITERATE_OVER_SYMBOLS.
(lookup_prefix_sym, add_matching_symbols_to_info): Likewise.
(find_function_symbols, decode_variable): Remove Ada special
case.
* language.h (struct language_defn) <la_iterate_over_symbols>: New
field.
(LA_ITERATE_OVER_SYMBOLS): New macro.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Update.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Update.
* d-lang.c (d_language_defn): Update.
* f-lang.c (f_language_defn): Update.
* jv-lang.c (java_language_defn): Update.
* m2-lang.c (m2_language_defn): Update.
* objc-lang.c (objc_language_defn): Update.
* opencl-lang.c (opencl_language_defn): Update.
* p-lang.c (pascal_language_defn): Update.
* ada-lang.c (ada_iterate_over_symbols): New function.
(ada_language_defn): Update.
2011-12-06 Tom Tromey <tromey@redhat.com>
Joel Brobecker <brobecker@acacore.com>
PR breakpoints/13105, PR objc/8341, PR objc/8343, PR objc/8366,
PR objc/8535, PR breakpoints/11657, PR breakpoints/11970,
PR breakpoints/12023, PR breakpoints/12334, PR breakpoints/12856,
PR shlibs/8929, PR shlibs/7393:
* python/py-type.c (compare_maybe_null_strings): Rename from
compare_strings.
(check_types_equal): Update.
* utils.c (compare_strings): New function.
* tui/tui-winsource.c (tui_update_breakpoint_info): Update for
location changes.
* tracepoint.c (scope_info): Update.
(trace_find_line_command): Use DECODE_LINE_FUNFIRSTLINE.
* symtab.h (iterate_over_minimal_symbols)
(iterate_over_some_symtabs, iterate_over_symtabs)
(find_pcs_for_symtab_line, iterate_over_symbols)
(demangle_for_lookup): Declare.
(expand_line_sal): Remove.
* symtab.c (iterate_over_some_symtabs, iterate_over_symtabs)
(lookup_symtab_callback): New functions.
(lookup_symtab): Rewrite.
(demangle_for_lookup): New function, extract from
lookup_symbol_in_language.
(lookup_symbol_in_language): Use it.
(iterate_over_symbols): New function.
(find_line_symtab): Update.
(find_pcs_for_symtab_line): New functions.
(find_line_common): Add 'start' argument.
(decode_line_spec): Update. Change argument to 'flags', change
interpretation.
(append_expanded_sal): Remove.
(append_exact_match_to_sals): Remove.
(expand_line_sal): Remove.
* symfile.h (struct quick_symbol_functions) <lookup_symtab>:
Remove.
<map_symtabs_matching_filename>: New field.
* stack.c (func_command): Only look in the current program space.
Use DECODE_LINE_FUNFIRSTLINE.
* source.c (line_info): Set pspace on sal. Check program space in
the loop. Use DECODE_LINE_LIST_MODE.
(select_source_symtab): Use DECODE_LINE_FUNFIRSTLINE.
* solib-target.c: Remove DEF_VEC_I(CORE_ADDR).
* python/python.c (gdbpy_decode_line): Update.
* psymtab.c (partial_map_expand_apply): New function.
(partial_map_symtabs_matching_filename): Rename from
lookup_partial_symbol. Update arguments.
(lookup_symtab_via_partial_symtab): Remove.
(psym_functions): Update.
* objc-lang.h (parse_selector, parse_method): Don't declare.
(find_imps): Update.
* objc-lang.c (parse_selector, parse_method): Now static.
(find_methods): Change arguments. Fill in a vector of symbol
names.
(uniquify_strings): New function.
(find_imps): Change arguments.
* minsyms.c (iterate_over_minimal_symbols): New function.
* linespec.h (enum decode_line_flags): New.
(struct linespec_sals): New.
(struct linespec_result) <canonical>: Remove.
<pre_expanded, addr_string, sals>: New fields.
(destroy_linespec_result, make_cleanup_destroy_linespec_result)
(decode_line_full): Declare.
(decode_line_1): Update.
* linespec.c (struct address_entry, struct linespec_state, struct
collect_info): New types.
(add_sal_to_sals_basic, add_sal_to_sals, hash_address_entry)
(eq_address_entry, maybe_add_address): New functions.
(total_number_of_methods): Remove.
(iterate_name_matcher, iterate_over_all_matching_symtabs): New
functions.
(find_methods): Change arguments. Don't canonicalize input.
Simplify logic.
(add_matching_methods, add_constructors)
(build_canonical_line_spec): Remove.
(filter_results, convert_results_to_lsals): New functions.
(decode_line_2): Change arguments. Rewrite for new data
structures.
(decode_line_internal): Rename from decode_line_1. Change
arguments. Add cleanups. Update for new data structures.
(linespec_state_constructor, linespec_state_destructor)
(decode_line_full, decode_line_1): New functions.
(decode_indirect): Change arguments. Update.
(locate_first_half): Use skip_spaces.
(decode_objc): Change arguments. Update for new data structures.
Simplify logic.
(decode_compound): Change arguments. Add cleanups. Remove
fallback code, replace with error.
(struct decode_compound_collector): New type.
(collect_one_symbol): New function.
(lookup_prefix_sym): Change arguments. Update.
(compare_symbol_name, add_all_symbol_names_from_pspace)
(find_superclass_methods ): New functions.
(find_method): Rewrite.
(struct symtab_collector): New type.
(add_symtabs_to_list, collect_symtabs_from_filename): New
functions.
(symtabs_from_filename): Change API. Rename from
symtab_from_filename.
(collect_function_symbols): New function.
(find_function_symbols): Change API. Rename from
find_function_symbol. Rewrite.
(decode_all_digits): Change arguments. Rewrite.
(decode_dollar): Change arguments. Use decode_variable.
(decode_label): Change arguments. Rewrite.
(collect_symbols): New function.
(minsym_found): Change arguments. Rewrite.
(check_minsym, search_minsyms_for_name)
(add_matching_symbols_to_info): New function.
(decode_variable): Change arguments. Iterate over all symbols.
(symbol_found): Remove.
(symbol_to_sal): New function.
(init_linespec_result, destroy_linespec_result)
(cleanup_linespec_result, make_cleanup_destroy_linespec_result):
New functions.
(decode_digits_list_mode, decode_digits_ordinary): New functions.
* dwarf2read.c (dw2_map_expand_apply): New function.
(dw2_map_symtabs_matching_filename): Rename from
dw2_lookup_symtab. Change arguments.
(dwarf2_gdb_index_functions): Update.
* dwarf2loc.c: Remove DEF_VEC_I(CORE_ADDR).
* defs.h (compare_strings): Declare.
* cli/cli-cmds.c (compare_strings): Move to utils.c.
(edit_command, list_command): Use DECODE_LINE_LIST_MODE. Call
filter_sals.
(compare_symtabs, filter_sals): New functions.
* breakpoint.h (struct bp_location) <line_number, source_file>:
New fields.
(struct breakpoint) <line_number, source_file>: Remove.
<filter>: New field.
* breakpoint.c (print_breakpoint_location, init_raw_breakpoint)
(momentary_breakpoint_from_master, add_location_to_breakpoint):
Update for changes to locations.
(init_breakpoint_sal): Add 'filter' argument. Set 'filter' on
breakpoint.
(create_breakpoint_sal): Add 'filter' argument.
(remove_sal, expand_line_sal_maybe): Remove.
(create_breakpoints_sal): Remove 'sals' argument. Handle
pre-expanded sals and the filter.
(parse_breakpoint_sals): Use decode_line_full.
(check_fast_tracepoint_sals): Use get_sal_arch.
(create_breakpoint): Create a linespec_sals. Update.
(break_range_command): Use decode_line_full. Update.
(until_break_command): Update.
(clear_command): Update match conditions for linespec.c changes.
Use DECODE_LINE_LIST_MODE.
(say_where): Update for changes to locations.
(bp_location_dtor): Free 'source_file'.
(base_breakpoint_dtor): Free 'filter'. Don't free 'source_file'.
(update_static_tracepoint): Update for changes to locations.
(update_breakpoint_locations): Disable ranged breakpoint if too
many locations match. Update.
(addr_string_to_sals): Use decode_line_full. Resolve all sal
PCs.
(breakpoint_re_set_default): Don't call expand_line_sal_maybe.
(decode_line_spec_1): Update. Change argument name to 'flags',
change interpretation.
* block.h (block_containing_function): Declare.
* block.c (block_containing_function): New function.
* skip.c (skip_function_command): Update.
(skip_re_set): Update.
* infcmd.c (jump_command): Use DECODE_LINE_FUNFIRSTLINE.
* mi/mi-main.c (mi_cmd_trace_find): Use DECODE_LINE_FUNFIRSTLINE.
* NEWS: Add entry.
2011-12-06 Tom Tromey <tromey@redhat.com>
* elfread.c (elf_gnu_ifunc_resolver_return_stop): Allow
breakpoint's pspace to be NULL.
* breakpoint.h (struct breakpoint) <pspace>: Update comment.
* breakpoint.c (init_raw_breakpoint): Conditionally set
breakpoint's pspace.
(init_breakpoint_sal): Don't set breakpoint's pspace.
(prepare_re_set_context): Conditionally switch program space.
(addr_string_to_sals): Check executing_startup on location's
program space.
2011-12-06 Tom Tromey <tromey@redhat.com>
* breakpoint.h (enum enable_state) <bp_startup_disabled>: Remove.
* breakpoint.c (should_be_inserted): Explicitly check if program
space is executing startup.
(describe_other_breakpoints): Update.
(disable_breakpoints_before_startup): Change executing_startup
earlier. Remove loop.
(enable_breakpoints_after_startup): Likewise.
(init_breakpoint_sal): Don't use bp_startup_disabled.
(create_breakpoint): Don't use bp_startup_disabled.
(update_global_location_list): Use should_be_inserted.
(bkpt_re_set): Update.
gdb/testsuite
2011-12-06 Joel Brobecker <brobecker@acacore.com>
* gdb.ada/fullname_bp.exp: Add tests for other valid linespecs
involving a fully qualified function name.
2011-12-06 Tom Tromey <tromey@redhat.com>
* gdb.ada/homonym.exp: Add three breakpoint tests.
2011-12-06 Tom Tromey <tromey@redhat.com>
* gdb.base/solib-weak.exp (do_test): Remove kfail.
* gdb.trace/tracecmd.exp: Disable pending breakpoints earlier.
* gdb.objc/objcdecode.exp: Update for output changes.
* gdb.linespec/linespec.exp: New file.
* gdb.linespec/lspec.cc: New file.
* gdb.linespec/lspec.h: New file.
* gdb.linespec/body.h: New file.
* gdb.linespec/base/two/thefile.cc: New file.
* gdb.linespec/base/one/thefile.cc: New file.
* gdb.linespec/Makefile.in: New file.
* gdb.cp/templates.exp (test_template_breakpoints): Update for
output changes.
* gdb.cp/re-set-overloaded.exp: Remove kfail.
* gdb.cp/ovldbreak.exp: Update for output changes. "all" test now
makes one breakpoint.
* gdb.cp/method2.exp (test_break): Update for output changes.
* gdb.cp/mb-templates.exp: Update for output changes.
* gdb.cp/mb-inline.exp: Update for output changes.
* gdb.cp/mb-ctor.exp: Update for output changes.
* gdb.cp/ovsrch.exp: Use fully-qualified names.
* gdb.base/solib-symbol.exp: Run to main later. Breakpoint now
has multiple matches.
* gdb.base/sepdebug.exp: Disable pending breakpoints. Update for
error message change.
* gdb.base/list.exp (test_list_filename_and_number): Update for
error message change.
* gdb.base/break.exp: Disable pending breakpoints. Update for
output changes.
* configure.ac: Add gdb.linespec.
* configure: Rebuild.
* Makefile.in (ALL_SUBDIRS): Add gdb.linespec.
gdb/doc
2011-12-06 Tom Tromey <tromey@redhat.com>
* gdb.texinfo (Set Breaks): Update for new behavior.
2011-12-07 02:54:43 +08:00
|
|
|
|
gdb_assert (current_program_space == b->pspace || b->pspace == NULL);
|
2011-03-29 04:29:51 +08:00
|
|
|
|
elf_gnu_ifunc_record_cache (b->addr_string, resolved_pc);
|
|
|
|
|
|
|
|
|
|
|
|
sal = find_pc_line (resolved_pc, 0);
|
|
|
|
|
|
sals.nelts = 1;
|
|
|
|
|
|
sals.sals = &sal;
|
2011-03-31 22:32:49 +08:00
|
|
|
|
sals_end.nelts = 0;
|
2011-03-29 04:29:51 +08:00
|
|
|
|
|
|
|
|
|
|
b->type = bp_breakpoint;
|
2011-03-31 22:32:49 +08:00
|
|
|
|
update_breakpoint_locations (b, sals, sals_end);
|
2011-03-29 04:29:51 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
1999-04-16 09:35:26 +08:00
|
|
|
|
/* Scan and build partial symbols for a symbol file.
|
2011-07-26 06:23:38 +08:00
|
|
|
|
We have been initialized by a call to elf_symfile_init, which
|
1999-04-16 09:35:26 +08:00
|
|
|
|
currently does nothing.
|
|
|
|
|
|
|
|
|
|
|
|
SECTION_OFFSETS is a set of offsets to apply to relocate the symbols
|
|
|
|
|
|
in each section. We simplify it down to a single offset for all
|
|
|
|
|
|
symbols. FIXME.
|
|
|
|
|
|
|
|
|
|
|
|
This function only does the minimum work necessary for letting the
|
|
|
|
|
|
user "name" things symbolically; it does not read the entire symtab.
|
|
|
|
|
|
Instead, it reads the external and static symbols and puts them in partial
|
|
|
|
|
|
symbol tables. When more extensive information is requested of a
|
|
|
|
|
|
file, the corresponding partial symbol table is mutated into a full
|
|
|
|
|
|
fledged symbol table by going back and reading the symbols
|
|
|
|
|
|
for real.
|
|
|
|
|
|
|
|
|
|
|
|
We look for sections with specific names, to tell us what debug
|
|
|
|
|
|
format to look for: FIXME!!!
|
|
|
|
|
|
|
|
|
|
|
|
elfstab_build_psymtabs() handles STABS symbols;
|
|
|
|
|
|
mdebug_build_psymtabs() handles ECOFF debugging information.
|
|
|
|
|
|
|
|
|
|
|
|
Note that ELF files have a "minimal" symbol table, which looks a lot
|
|
|
|
|
|
like a COFF symbol table, but has only the minimal information necessary
|
|
|
|
|
|
for linking. We process this also, and use the information to
|
|
|
|
|
|
build gdb's minimal symbol table. This gives us some minimal debugging
|
|
|
|
|
|
capability even for files compiled without -g. */
|
|
|
|
|
|
|
|
|
|
|
|
static void
|
2009-12-07 17:47:40 +08:00
|
|
|
|
elf_symfile_read (struct objfile *objfile, int symfile_flags)
|
1999-04-16 09:35:26 +08:00
|
|
|
|
{
|
2011-04-18 02:38:46 +08:00
|
|
|
|
bfd *synth_abfd, *abfd = objfile->obfd;
|
1999-04-16 09:35:26 +08:00
|
|
|
|
struct elfinfo ei;
|
|
|
|
|
|
struct cleanup *back_to;
|
2005-11-04 10:44:25 +08:00
|
|
|
|
long symcount = 0, dynsymcount = 0, synthcount, storage_needed;
|
|
|
|
|
|
asymbol **symbol_table = NULL, **dyn_symbol_table = NULL;
|
|
|
|
|
|
asymbol *synthsyms;
|
2012-12-12 23:57:01 +08:00
|
|
|
|
struct dbx_symfile_info *dbx;
|
1999-04-16 09:35:26 +08:00
|
|
|
|
|
2012-06-27 04:14:03 +08:00
|
|
|
|
if (symtab_create_debug)
|
|
|
|
|
|
{
|
|
|
|
|
|
fprintf_unfiltered (gdb_stdlog,
|
|
|
|
|
|
"Reading minimal symbols of objfile %s ...\n",
|
Code cleanup: Add objfile_name accessor
gdb/
2013-09-24 Jan Kratochvil <jan.kratochvil@redhat.com>
Code cleanup: Add objfile_name accessor function.
* ada-lang.c (is_known_support_routine): Use objfile_name.
* auto-load.c (source_gdb_script_for_objfile)
(auto_load_objfile_script): Likewise.
* coffread.c (coff_symtab_read, read_one_sym): Likewise.
* dbxread.c (dbx_symfile_read): Likewise.
* dwarf2-frame.c (dwarf2_build_frame_info): Likewise.
* dwarf2loc.c (locexpr_describe_location_piece): Likewise.
* dwarf2read.c (dwarf2_get_dwz_file, dwarf2_read_index)
(dw2_symtab_iter_next, dw2_expand_symtabs_matching)
(lookup_dwp_signatured_type, lookup_dwo_unit)
(dwarf2_build_psymtabs_hard, scan_partial_symbols, process_queue)
(fixup_go_packaging, process_imported_unit_die, dwarf2_physname)
(read_import_statement, create_dwo_cu, open_and_init_dwp_file)
(lookup_dwo_cutu, read_call_site_scope, dwarf2_ranges_read)
(dwarf2_record_block_ranges, read_common_block, read_typedef)
(read_subrange_type, load_partial_dies, read_partial_die)
(read_addr_index_1, read_str_index, dwarf_decode_lines_1)
(die_containing_type, build_error_marker_type, lookup_die_type)
(follow_die_ref_or_sig, follow_die_ref, dwarf2_fetch_die_loc_sect_off)
(dwarf2_fetch_constant_bytes, follow_die_sig, get_signatured_type)
(get_DW_AT_signature_type, write_psymtabs_to_index)
(save_gdb_index_command): Likewise.
* elfread.c (find_separate_debug_file_by_buildid, elf_symfile_read):
Likewise.
* expprint.c (dump_subexp_body_standard): Likewise.
* gdbtypes.c (type_name_no_tag_or_error): Likewise.
* jit.c (jit_object_close_impl): Use the objfile field name renamed to
original_name.
* linux-thread-db.c (try_thread_db_load_from_pdir_1): New variable
obj_name, use objfile_name for it, use the variable.
(try_thread_db_load_from_pdir, has_libpthread, thread_db_new_objfile):
Use objfile_name.
* machoread.c (macho_symtab_read, macho_check_dsym)
(macho_symfile_relocate): Likewise.
* maint.c (maintenance_translate_address): Likewise.
* minidebug.c (find_separate_debug_file_in_section): Likewise.
* minsyms.c (install_minimal_symbols): Likewise.
* objfiles.c (allocate_objfile): Use the objfile field name renamed to
original_name.
(filter_overlapping_sections): Use objfile_name.
(objfile_name): New function.
* objfiles.h (struct objfile): Rename field name to original_name.
(objfile_name): New prototype.
* printcmd.c (sym_info, address_info): Use objfile_name.
* probe.c (parse_probes, collect_probes, compare_probes)
(info_probes_for_ops): Likewise.
* progspace.c (clone_program_space): Likewise.
* psymtab.c (require_partial_symbols, dump_psymtab, allocate_psymtab)
(maintenance_info_psymtabs): Likewise.
* python/py-auto-load.c (gdbpy_load_auto_script_for_objfile)
(source_section_scripts): Likewise.
* python/py-objfile.c (objfpy_get_filename): Likewise.
* python/py-progspace.c (pspy_get_filename): Likewise.
* solib-aix.c (solib_aix_get_toc_value): Likewise.
* solib-som.c (match_main, som_solib_section_offsets): Likewise.
* solib.c (solib_read_symbols): Likewise.
* stabsread.c (scan_file_globals): Likewise.
* stap-probe.c (handle_stap_probe): Likewise.
* symfile.c (symbol_file_clear, separate_debug_file_exists)
(find_separate_debug_file_by_debuglink): Likewise.
(reread_symbols): Likewise. Use the objfile field name renamed to
original_name.
(allocate_symtab): Use objfile_name.
* symmisc.c (print_symbol_bcache_statistics, print_objfile_statistics)
(dump_objfile, dump_msymbols, dump_symtab_1)
(maintenance_print_msymbols, maintenance_print_objfiles)
(maintenance_info_symtabs, maintenance_check_symtabs): Likewise.
* target.c (target_translate_tls_address, target_info): Likewise.
* xcoffread.c (xcoff_initial_scan): Make variable name const. Use
objfile_name.
2013-09-24 21:57:38 +08:00
|
|
|
|
objfile_name (objfile));
|
2012-06-27 04:14:03 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
1999-04-16 09:35:26 +08:00
|
|
|
|
init_minimal_symbol_collection ();
|
2000-05-16 12:07:39 +08:00
|
|
|
|
back_to = make_cleanup_discard_minimal_symbols ();
|
1999-04-16 09:35:26 +08:00
|
|
|
|
|
|
|
|
|
|
memset ((char *) &ei, 0, sizeof (ei));
|
|
|
|
|
|
|
2011-01-08 03:36:19 +08:00
|
|
|
|
/* Allocate struct to keep track of the symfile. */
|
2012-12-12 23:57:01 +08:00
|
|
|
|
dbx = XCNEW (struct dbx_symfile_info);
|
|
|
|
|
|
set_objfile_data (objfile, dbx_objfile_data_key, dbx);
|
2002-03-20 03:00:04 +08:00
|
|
|
|
make_cleanup (free_elfinfo, (void *) objfile);
|
1999-04-16 09:35:26 +08:00
|
|
|
|
|
2011-01-06 06:22:53 +08:00
|
|
|
|
/* Process the normal ELF symbol table first. This may write some
|
2012-12-12 23:57:01 +08:00
|
|
|
|
chain of info into the dbx_symfile_info of the objfile, which can
|
|
|
|
|
|
later be used by elfstab_offset_sections. */
|
1999-04-16 09:35:26 +08:00
|
|
|
|
|
2005-11-04 10:44:25 +08:00
|
|
|
|
storage_needed = bfd_get_symtab_upper_bound (objfile->obfd);
|
|
|
|
|
|
if (storage_needed < 0)
|
2011-01-06 06:22:53 +08:00
|
|
|
|
error (_("Can't read symbols from %s: %s"),
|
|
|
|
|
|
bfd_get_filename (objfile->obfd),
|
2005-11-04 10:44:25 +08:00
|
|
|
|
bfd_errmsg (bfd_get_error ()));
|
|
|
|
|
|
|
|
|
|
|
|
if (storage_needed > 0)
|
|
|
|
|
|
{
|
|
|
|
|
|
symbol_table = (asymbol **) xmalloc (storage_needed);
|
|
|
|
|
|
make_cleanup (xfree, symbol_table);
|
|
|
|
|
|
symcount = bfd_canonicalize_symtab (objfile->obfd, symbol_table);
|
|
|
|
|
|
|
|
|
|
|
|
if (symcount < 0)
|
2011-01-06 06:22:53 +08:00
|
|
|
|
error (_("Can't read symbols from %s: %s"),
|
|
|
|
|
|
bfd_get_filename (objfile->obfd),
|
2005-11-04 10:44:25 +08:00
|
|
|
|
bfd_errmsg (bfd_get_error ()));
|
|
|
|
|
|
|
2009-11-17 02:40:23 +08:00
|
|
|
|
elf_symtab_read (objfile, ST_REGULAR, symcount, symbol_table, 0);
|
2005-11-04 10:44:25 +08:00
|
|
|
|
}
|
1999-04-16 09:35:26 +08:00
|
|
|
|
|
|
|
|
|
|
/* Add the dynamic symbols. */
|
|
|
|
|
|
|
2005-11-04 10:44:25 +08:00
|
|
|
|
storage_needed = bfd_get_dynamic_symtab_upper_bound (objfile->obfd);
|
|
|
|
|
|
|
|
|
|
|
|
if (storage_needed > 0)
|
|
|
|
|
|
{
|
2010-11-20 06:30:47 +08:00
|
|
|
|
/* Memory gets permanently referenced from ABFD after
|
|
|
|
|
|
bfd_get_synthetic_symtab so it must not get freed before ABFD gets.
|
|
|
|
|
|
It happens only in the case when elf_slurp_reloc_table sees
|
|
|
|
|
|
asection->relocation NULL. Determining which section is asection is
|
|
|
|
|
|
done by _bfd_elf_get_synthetic_symtab which is all a bfd
|
|
|
|
|
|
implementation detail, though. */
|
|
|
|
|
|
|
|
|
|
|
|
dyn_symbol_table = bfd_alloc (abfd, storage_needed);
|
2005-11-04 10:44:25 +08:00
|
|
|
|
dynsymcount = bfd_canonicalize_dynamic_symtab (objfile->obfd,
|
|
|
|
|
|
dyn_symbol_table);
|
|
|
|
|
|
|
|
|
|
|
|
if (dynsymcount < 0)
|
2011-01-06 06:22:53 +08:00
|
|
|
|
error (_("Can't read symbols from %s: %s"),
|
|
|
|
|
|
bfd_get_filename (objfile->obfd),
|
2005-11-04 10:44:25 +08:00
|
|
|
|
bfd_errmsg (bfd_get_error ()));
|
|
|
|
|
|
|
2009-11-17 02:40:23 +08:00
|
|
|
|
elf_symtab_read (objfile, ST_DYNAMIC, dynsymcount, dyn_symbol_table, 0);
|
gdb/
STT_GNU_IFUNC reader implementation.
* elfread.c: Include gdbtypes.h, value.h and infcall.h.
(SYMBOL_GOT_PLT_SUFFIX, elf_rel_plt_read)
(elf_objfile_gnu_ifunc_cache_data, struct elf_gnu_ifunc_cache)
(elf_gnu_ifunc_cache_hash, elf_gnu_ifunc_cache_eq)
(elf_gnu_ifunc_record_cache, elf_gnu_ifunc_resolve_by_cache)
(elf_gnu_ifunc_resolve_by_got, elf_gnu_ifunc_resolve_name)
(elf_gnu_ifunc_resolve_addr): New.
(elf_symfile_read): Call elf_rel_plt_read.
(elf_gnu_ifunc_fns): New.
(_initialize_elfread): Initialize elf_objfile_gnu_ifunc_cache_data.
Install elf_gnu_ifunc_fns.
* infcall.c (find_function_return_type): New function.
(find_function_addr): Resolve TYPE_GNU_IFUNC functions, if possible.
* minsyms.c (stub_gnu_ifunc_resolve_addr)
(stub_gnu_ifunc_resolve_name): New functions.
(stub_gnu_ifunc_fns, gnu_ifunc_fns_p): New variables.
* symtab.h (struct gnu_ifunc_fns, gnu_ifunc_resolve_addr)
(gnu_ifunc_resolve_name, gnu_ifunc_fns_p): New.
2011-03-29 04:26:24 +08:00
|
|
|
|
|
|
|
|
|
|
elf_rel_plt_read (objfile, dyn_symbol_table);
|
2005-11-04 10:44:25 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
2011-04-18 02:38:46 +08:00
|
|
|
|
/* Contrary to binutils --strip-debug/--only-keep-debug the strip command from
|
|
|
|
|
|
elfutils (eu-strip) moves even the .symtab section into the .debug file.
|
|
|
|
|
|
|
|
|
|
|
|
bfd_get_synthetic_symtab on ppc64 for each function descriptor ELF symbol
|
|
|
|
|
|
'name' creates a new BSF_SYNTHETIC ELF symbol '.name' with its code
|
|
|
|
|
|
address. But with eu-strip files bfd_get_synthetic_symtab would fail to
|
|
|
|
|
|
read the code address from .opd while it reads the .symtab section from
|
|
|
|
|
|
a separate debug info file as the .opd section is SHT_NOBITS there.
|
|
|
|
|
|
|
|
|
|
|
|
With SYNTH_ABFD the .opd section will be read from the original
|
|
|
|
|
|
backlinked binary where it is valid. */
|
|
|
|
|
|
|
|
|
|
|
|
if (objfile->separate_debug_objfile_backlink)
|
|
|
|
|
|
synth_abfd = objfile->separate_debug_objfile_backlink->obfd;
|
|
|
|
|
|
else
|
|
|
|
|
|
synth_abfd = abfd;
|
|
|
|
|
|
|
2005-11-04 10:44:25 +08:00
|
|
|
|
/* Add synthetic symbols - for instance, names for any PLT entries. */
|
|
|
|
|
|
|
2011-04-18 02:38:46 +08:00
|
|
|
|
synthcount = bfd_get_synthetic_symtab (synth_abfd, symcount, symbol_table,
|
2005-11-04 10:44:25 +08:00
|
|
|
|
dynsymcount, dyn_symbol_table,
|
|
|
|
|
|
&synthsyms);
|
|
|
|
|
|
if (synthcount > 0)
|
|
|
|
|
|
{
|
|
|
|
|
|
asymbol **synth_symbol_table;
|
|
|
|
|
|
long i;
|
|
|
|
|
|
|
|
|
|
|
|
make_cleanup (xfree, synthsyms);
|
|
|
|
|
|
synth_symbol_table = xmalloc (sizeof (asymbol *) * synthcount);
|
|
|
|
|
|
for (i = 0; i < synthcount; i++)
|
2005-12-27 12:09:40 +08:00
|
|
|
|
synth_symbol_table[i] = synthsyms + i;
|
2005-11-04 10:44:25 +08:00
|
|
|
|
make_cleanup (xfree, synth_symbol_table);
|
2011-01-06 06:22:53 +08:00
|
|
|
|
elf_symtab_read (objfile, ST_SYNTHETIC, synthcount,
|
|
|
|
|
|
synth_symbol_table, 1);
|
2005-11-04 10:44:25 +08:00
|
|
|
|
}
|
1999-04-16 09:35:26 +08:00
|
|
|
|
|
2003-02-21 02:31:14 +08:00
|
|
|
|
/* Install any minimal symbols that have been collected as the current
|
|
|
|
|
|
minimal symbols for this objfile. The debug readers below this point
|
|
|
|
|
|
should not generate new minimal symbols; if they do it's their
|
|
|
|
|
|
responsibility to install them. "mdebug" appears to be the only one
|
|
|
|
|
|
which will do this. */
|
|
|
|
|
|
|
|
|
|
|
|
install_minimal_symbols (objfile);
|
|
|
|
|
|
do_cleanups (back_to);
|
|
|
|
|
|
|
2013-08-24 08:12:25 +08:00
|
|
|
|
if (symtab_create_debug)
|
|
|
|
|
|
fprintf_unfiltered (gdb_stdlog, "Done reading minimal symbols.\n");
|
|
|
|
|
|
|
1999-04-16 09:35:26 +08:00
|
|
|
|
/* Now process debugging information, which is contained in
|
2011-01-08 03:36:19 +08:00
|
|
|
|
special ELF sections. */
|
1999-04-16 09:35:26 +08:00
|
|
|
|
|
2011-01-08 03:36:19 +08:00
|
|
|
|
/* We first have to find them... */
|
2002-03-20 03:00:04 +08:00
|
|
|
|
bfd_map_over_sections (abfd, elf_locate_sections, (void *) & ei);
|
1999-04-16 09:35:26 +08:00
|
|
|
|
|
|
|
|
|
|
/* ELF debugging information is inserted into the psymtab in the
|
|
|
|
|
|
order of least informative first - most informative last. Since
|
|
|
|
|
|
the psymtab table is searched `most recent insertion first' this
|
|
|
|
|
|
increases the probability that more detailed debug information
|
|
|
|
|
|
for a section is found.
|
|
|
|
|
|
|
|
|
|
|
|
For instance, an object file might contain both .mdebug (XCOFF)
|
|
|
|
|
|
and .debug_info (DWARF2) sections then .mdebug is inserted first
|
|
|
|
|
|
(searched last) and DWARF2 is inserted last (searched first). If
|
|
|
|
|
|
we don't do this then the XCOFF info is found first - for code in
|
2011-01-08 03:36:19 +08:00
|
|
|
|
an included file XCOFF info is useless. */
|
1999-04-16 09:35:26 +08:00
|
|
|
|
|
|
|
|
|
|
if (ei.mdebugsect)
|
|
|
|
|
|
{
|
|
|
|
|
|
const struct ecoff_debug_swap *swap;
|
|
|
|
|
|
|
|
|
|
|
|
/* .mdebug section, presumably holding ECOFF debugging
|
1999-07-08 04:19:36 +08:00
|
|
|
|
information. */
|
1999-04-16 09:35:26 +08:00
|
|
|
|
swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
|
|
|
|
|
|
if (swap)
|
1999-09-09 08:02:17 +08:00
|
|
|
|
elfmdebug_build_psymtabs (objfile, swap, ei.mdebugsect);
|
1999-04-16 09:35:26 +08:00
|
|
|
|
}
|
|
|
|
|
|
if (ei.stabsect)
|
|
|
|
|
|
{
|
|
|
|
|
|
asection *str_sect;
|
|
|
|
|
|
|
|
|
|
|
|
/* Stab sections have an associated string table that looks like
|
1999-07-08 04:19:36 +08:00
|
|
|
|
a separate section. */
|
1999-04-16 09:35:26 +08:00
|
|
|
|
str_sect = bfd_get_section_by_name (abfd, ".stabstr");
|
|
|
|
|
|
|
|
|
|
|
|
/* FIXME should probably warn about a stab section without a stabstr. */
|
|
|
|
|
|
if (str_sect)
|
|
|
|
|
|
elfstab_build_psymtabs (objfile,
|
2003-02-01 03:22:18 +08:00
|
|
|
|
ei.stabsect,
|
1999-04-16 09:35:26 +08:00
|
|
|
|
str_sect->filepos,
|
|
|
|
|
|
bfd_section_size (abfd, str_sect));
|
|
|
|
|
|
}
|
2010-07-14 04:51:34 +08:00
|
|
|
|
|
2011-05-26 15:47:10 +08:00
|
|
|
|
if (dwarf2_has_info (objfile, NULL))
|
2011-03-08 00:17:29 +08:00
|
|
|
|
{
|
2011-04-26 03:38:16 +08:00
|
|
|
|
/* elf_sym_fns_gdb_index cannot handle simultaneous non-DWARF debug
|
|
|
|
|
|
information present in OBJFILE. If there is such debug info present
|
|
|
|
|
|
never use .gdb_index. */
|
|
|
|
|
|
|
|
|
|
|
|
if (!objfile_has_partial_symbols (objfile)
|
|
|
|
|
|
&& dwarf2_initialize_objfile (objfile))
|
2013-09-26 07:17:12 +08:00
|
|
|
|
objfile_set_sym_fns (objfile, &elf_sym_fns_gdb_index);
|
2011-03-08 00:17:29 +08:00
|
|
|
|
else
|
|
|
|
|
|
{
|
|
|
|
|
|
/* It is ok to do this even if the stabs reader made some
|
|
|
|
|
|
partial symbols, because OBJF_PSYMTABS_READ has not been
|
|
|
|
|
|
set, and so our lazy reader function will still be called
|
|
|
|
|
|
when needed. */
|
2013-09-26 07:17:12 +08:00
|
|
|
|
objfile_set_sym_fns (objfile, &elf_sym_fns_lazy_psyms);
|
2011-03-08 00:17:29 +08:00
|
|
|
|
}
|
|
|
|
|
|
}
|
2011-01-06 06:22:53 +08:00
|
|
|
|
/* If the file has its own symbol tables it has no separate debug
|
|
|
|
|
|
info. `.dynsym'/`.symtab' go to MSYMBOLS, `.debug_info' goes to
|
|
|
|
|
|
SYMTABS/PSYMTABS. `.gnu_debuglink' may no longer be present with
|
2013-02-02 03:39:04 +08:00
|
|
|
|
`.note.gnu.build-id'.
|
|
|
|
|
|
|
|
|
|
|
|
.gnu_debugdata is !objfile_has_partial_symbols because it contains only
|
|
|
|
|
|
.symtab, not .debug_* section. But if we already added .gnu_debugdata as
|
|
|
|
|
|
an objfile via find_separate_debug_file_in_section there was no separate
|
|
|
|
|
|
debug info available. Therefore do not attempt to search for another one,
|
|
|
|
|
|
objfile->separate_debug_objfile->separate_debug_objfile GDB guarantees to
|
|
|
|
|
|
be NULL and we would possibly violate it. */
|
|
|
|
|
|
|
|
|
|
|
|
else if (!objfile_has_partial_symbols (objfile)
|
|
|
|
|
|
&& objfile->separate_debug_objfile == NULL
|
|
|
|
|
|
&& objfile->separate_debug_objfile_backlink == NULL)
|
2009-12-09 21:44:53 +08:00
|
|
|
|
{
|
|
|
|
|
|
char *debugfile;
|
|
|
|
|
|
|
|
|
|
|
|
debugfile = find_separate_debug_file_by_buildid (objfile);
|
|
|
|
|
|
|
|
|
|
|
|
if (debugfile == NULL)
|
|
|
|
|
|
debugfile = find_separate_debug_file_by_debuglink (objfile);
|
|
|
|
|
|
|
|
|
|
|
|
if (debugfile)
|
|
|
|
|
|
{
|
2012-07-23 22:58:44 +08:00
|
|
|
|
struct cleanup *cleanup = make_cleanup (xfree, debugfile);
|
2009-12-09 21:44:53 +08:00
|
|
|
|
bfd *abfd = symfile_bfd_open (debugfile);
|
2010-05-15 02:35:11 +08:00
|
|
|
|
|
2012-07-23 22:58:44 +08:00
|
|
|
|
make_cleanup_bfd_unref (abfd);
|
2013-09-24 22:00:06 +08:00
|
|
|
|
symbol_file_add_separate (abfd, debugfile, symfile_flags, objfile);
|
2012-07-23 22:58:44 +08:00
|
|
|
|
do_cleanups (cleanup);
|
2009-12-09 21:44:53 +08:00
|
|
|
|
}
|
|
|
|
|
|
}
|
1999-04-16 09:35:26 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
2011-03-08 00:17:29 +08:00
|
|
|
|
/* Callback to lazily read psymtabs. */
|
|
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
|
read_psyms (struct objfile *objfile)
|
|
|
|
|
|
{
|
2011-05-26 15:47:10 +08:00
|
|
|
|
if (dwarf2_has_info (objfile, NULL))
|
2011-03-08 00:17:29 +08:00
|
|
|
|
dwarf2_build_psymtabs (objfile);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
2012-12-12 23:57:01 +08:00
|
|
|
|
/* This cleans up the objfile's dbx symfile info, and the chain of
|
|
|
|
|
|
stab_section_info's, that might be dangling from it. */
|
1999-04-16 09:35:26 +08:00
|
|
|
|
|
|
|
|
|
|
static void
|
2002-03-20 03:00:04 +08:00
|
|
|
|
free_elfinfo (void *objp)
|
1999-04-16 09:35:26 +08:00
|
|
|
|
{
|
1999-07-08 04:19:36 +08:00
|
|
|
|
struct objfile *objfile = (struct objfile *) objp;
|
2012-12-12 23:57:01 +08:00
|
|
|
|
struct dbx_symfile_info *dbxinfo = DBX_SYMFILE_INFO (objfile);
|
1999-04-16 09:35:26 +08:00
|
|
|
|
struct stab_section_info *ssi, *nssi;
|
|
|
|
|
|
|
|
|
|
|
|
ssi = dbxinfo->stab_section_info;
|
|
|
|
|
|
while (ssi)
|
|
|
|
|
|
{
|
|
|
|
|
|
nssi = ssi->next;
|
2004-08-11 05:52:05 +08:00
|
|
|
|
xfree (ssi);
|
1999-04-16 09:35:26 +08:00
|
|
|
|
ssi = nssi;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
dbxinfo->stab_section_info = 0; /* Just say No mo info about this. */
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Initialize anything that needs initializing when a completely new symbol
|
|
|
|
|
|
file is specified (not just adding some symbols from another file, e.g. a
|
|
|
|
|
|
shared library).
|
|
|
|
|
|
|
2011-01-06 06:22:53 +08:00
|
|
|
|
We reinitialize buildsym, since we may be reading stabs from an ELF
|
|
|
|
|
|
file. */
|
1999-04-16 09:35:26 +08:00
|
|
|
|
|
|
|
|
|
|
static void
|
2000-07-30 09:48:28 +08:00
|
|
|
|
elf_new_init (struct objfile *ignore)
|
1999-04-16 09:35:26 +08:00
|
|
|
|
{
|
|
|
|
|
|
stabsread_new_init ();
|
|
|
|
|
|
buildsym_new_init ();
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* Perform any local cleanups required when we are done with a particular
|
|
|
|
|
|
objfile. I.E, we are in the process of discarding all symbol information
|
|
|
|
|
|
for an objfile, freeing up all memory held for it, and unlinking the
|
2011-01-08 03:36:19 +08:00
|
|
|
|
objfile struct from the global list of known objfiles. */
|
1999-04-16 09:35:26 +08:00
|
|
|
|
|
|
|
|
|
|
static void
|
2000-07-30 09:48:28 +08:00
|
|
|
|
elf_symfile_finish (struct objfile *objfile)
|
1999-04-16 09:35:26 +08:00
|
|
|
|
{
|
2007-10-22 09:16:34 +08:00
|
|
|
|
dwarf2_free_objfile (objfile);
|
1999-04-16 09:35:26 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* ELF specific initialization routine for reading symbols.
|
|
|
|
|
|
|
|
|
|
|
|
It is passed a pointer to a struct sym_fns which contains, among other
|
|
|
|
|
|
things, the BFD for the file whose symbols are being read, and a slot for
|
|
|
|
|
|
a pointer to "private data" which we can fill with goodies.
|
|
|
|
|
|
|
|
|
|
|
|
For now at least, we have nothing in particular to do, so this function is
|
2011-01-08 03:36:19 +08:00
|
|
|
|
just a stub. */
|
1999-04-16 09:35:26 +08:00
|
|
|
|
|
|
|
|
|
|
static void
|
2000-07-30 09:48:28 +08:00
|
|
|
|
elf_symfile_init (struct objfile *objfile)
|
1999-04-16 09:35:26 +08:00
|
|
|
|
{
|
|
|
|
|
|
/* ELF objects may be reordered, so set OBJF_REORDERED. If we
|
|
|
|
|
|
find this causes a significant slowdown in gdb then we could
|
|
|
|
|
|
set it in the debug symbol readers only when necessary. */
|
|
|
|
|
|
objfile->flags |= OBJF_REORDERED;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* When handling an ELF file that contains Sun STABS debug info,
|
|
|
|
|
|
some of the debug info is relative to the particular chunk of the
|
|
|
|
|
|
section that was generated in its individual .o file. E.g.
|
|
|
|
|
|
offsets to static variables are relative to the start of the data
|
|
|
|
|
|
segment *for that module before linking*. This information is
|
|
|
|
|
|
painfully squirreled away in the ELF symbol table as local symbols
|
|
|
|
|
|
with wierd names. Go get 'em when needed. */
|
|
|
|
|
|
|
|
|
|
|
|
void
|
2000-07-30 09:48:28 +08:00
|
|
|
|
elfstab_offset_sections (struct objfile *objfile, struct partial_symtab *pst)
|
1999-04-16 09:35:26 +08:00
|
|
|
|
{
|
2010-10-02 04:26:11 +08:00
|
|
|
|
const char *filename = pst->filename;
|
2012-12-12 23:57:01 +08:00
|
|
|
|
struct dbx_symfile_info *dbx = DBX_SYMFILE_INFO (objfile);
|
1999-04-16 09:35:26 +08:00
|
|
|
|
struct stab_section_info *maybe = dbx->stab_section_info;
|
|
|
|
|
|
struct stab_section_info *questionable = 0;
|
|
|
|
|
|
int i;
|
|
|
|
|
|
|
|
|
|
|
|
/* The ELF symbol info doesn't include path names, so strip the path
|
|
|
|
|
|
(if any) from the psymtab filename. */
|
2011-03-24 02:23:56 +08:00
|
|
|
|
filename = lbasename (filename);
|
1999-04-16 09:35:26 +08:00
|
|
|
|
|
|
|
|
|
|
/* FIXME: This linear search could speed up significantly
|
|
|
|
|
|
if it was chained in the right order to match how we search it,
|
2011-01-08 03:36:19 +08:00
|
|
|
|
and if we unchained when we found a match. */
|
1999-04-16 09:35:26 +08:00
|
|
|
|
for (; maybe; maybe = maybe->next)
|
|
|
|
|
|
{
|
|
|
|
|
|
if (filename[0] == maybe->filename[0]
|
2011-03-24 02:23:56 +08:00
|
|
|
|
&& filename_cmp (filename, maybe->filename) == 0)
|
1999-04-16 09:35:26 +08:00
|
|
|
|
{
|
|
|
|
|
|
/* We found a match. But there might be several source files
|
|
|
|
|
|
(from different directories) with the same name. */
|
|
|
|
|
|
if (0 == maybe->found)
|
|
|
|
|
|
break;
|
1999-07-08 04:19:36 +08:00
|
|
|
|
questionable = maybe; /* Might use it later. */
|
1999-04-16 09:35:26 +08:00
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (maybe == 0 && questionable != 0)
|
|
|
|
|
|
{
|
2002-12-17 08:39:08 +08:00
|
|
|
|
complaint (&symfile_complaints,
|
2011-01-06 06:22:53 +08:00
|
|
|
|
_("elf/stab section information questionable for %s"),
|
|
|
|
|
|
filename);
|
1999-04-16 09:35:26 +08:00
|
|
|
|
maybe = questionable;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (maybe)
|
|
|
|
|
|
{
|
|
|
|
|
|
/* Found it! Allocate a new psymtab struct, and fill it in. */
|
|
|
|
|
|
maybe->found++;
|
|
|
|
|
|
pst->section_offsets = (struct section_offsets *)
|
2011-07-26 06:23:38 +08:00
|
|
|
|
obstack_alloc (&objfile->objfile_obstack,
|
2003-06-07 07:33:00 +08:00
|
|
|
|
SIZEOF_N_SECTION_OFFSETS (objfile->num_sections));
|
|
|
|
|
|
for (i = 0; i < maybe->num_sections; i++)
|
2000-08-07 23:02:48 +08:00
|
|
|
|
(pst->section_offsets)->offsets[i] = maybe->sections[i];
|
1999-04-16 09:35:26 +08:00
|
|
|
|
return;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* We were unable to find any offsets for this file. Complain. */
|
1999-07-08 04:19:36 +08:00
|
|
|
|
if (dbx->stab_section_info) /* If there *is* any info, */
|
2002-12-17 08:39:08 +08:00
|
|
|
|
complaint (&symfile_complaints,
|
2005-02-11 Andrew Cagney <cagney@gnu.org>
Mark up error_no_arg, query, perror_with_name, complaint, and
internal_error.
* breakpoint.c, cp-abi.c, cp-namespace.c, cp-support.c: Update.
* cris-tdep.c, dbxread.c, dictionary.c, dsrec.c: Update.
* dummy-frame.c, dve3900-rom.c, dwarf2-frame.c, dwarf2expr.c: Update.
* dwarf2read.c, dwarfread.c, elfread.c, event-loop.c: Update.
* exceptions.c, exec.c, f-lang.c, findvar.c, fork-child.c: Update.
* frame-unwind.c, frame.c, frv-linux-tdep.c, frv-tdep.c: Update.
* gdb_assert.h, gdbarch.c, gdbtypes.c, gnu-nat.c: Update.
* go32-nat.c, hppa-tdep.c, hppabsd-nat.c, hpread.c: Update.
* i386-linux-nat.c, i386-nat.c, i386-tdep.c, i386bsd-nat.c: Update.
* i386fbsd-nat.c, inf-ptrace.c, inf-ttrace.c, infcall.c: Update.
* infcmd.c, inflow.c, infptrace.c, infrun.c, inftarg.c: Update.
* interps.c, language.c, linespec.c, linux-nat.c: Update.
* m32r-linux-nat.c, m68k-tdep.c, m68kbsd-nat.c: Update.
* m68klinux-nat.c, m88kbsd-nat.c, macroexp.c, macroscope.c: Update.
* macrotab.c, maint.c, mdebugread.c, memattr.c: Update.
* mips-linux-tdep.c, mips-tdep.c, mips64obsd-nat.c: Update.
* mipsnbsd-nat.c, mn10300-tdep.c, monitor.c, nto-procfs.c: Update.
* objc-lang.c, objfiles.c, objfiles.h, ocd.c, osabi.c: Update.
* parse.c, ppc-bdm.c, ppc-linux-nat.c, ppc-sysv-tdep.c: Update.
* ppcnbsd-nat.c, ppcobsd-nat.c, printcmd.c, procfs.c: Update.
* regcache.c, reggroups.c, remote-e7000.c, remote-mips.c: Update.
* remote-rdp.c, remote-sds.c, remote-sim.c, remote-st.c: Update.
* remote-utils.c, remote.c, rs6000-nat.c, rs6000-tdep.c: Update.
* s390-nat.c, s390-tdep.c, sentinel-frame.c, serial.c: Update.
* sh-tdep.c, sh3-rom.c, sh64-tdep.c, shnbsd-nat.c: Update.
* solib-aix5.c, solib-svr4.c, solib.c, source.c: Update.
* sparc-nat.c, stabsread.c, stack.c, symfile.c, symtab.c: Update.
* symtab.h, target.c, tracepoint.c, ui-file.c, ui-out.c: Update.
* utils.c, valops.c, valprint.c, vax-nat.c, vaxbsd-nat.c: Update.
* win32-nat.c, xcoffread.c, xstormy16-tdep.c: Update.
* cli/cli-cmds.c, cli/cli-logging.c, cli/cli-script.c: Update.
* cli/cli-setshow.c, mi/mi-cmd-break.c, mi/mi-cmds.c: Update.
* mi/mi-console.c, mi/mi-getopt.c, mi/mi-out.c: Update.
* tui/tui-file.c, tui/tui-interp.c: Update.
2005-02-12 02:13:55 +08:00
|
|
|
|
_("elf/stab section information missing for %s"), filename);
|
1999-04-16 09:35:26 +08:00
|
|
|
|
}
|
2012-04-28 04:47:57 +08:00
|
|
|
|
|
|
|
|
|
|
/* Implementation of `sym_get_probes', as documented in symfile.h. */
|
|
|
|
|
|
|
|
|
|
|
|
static VEC (probe_p) *
|
|
|
|
|
|
elf_get_probes (struct objfile *objfile)
|
|
|
|
|
|
{
|
|
|
|
|
|
VEC (probe_p) *probes_per_objfile;
|
|
|
|
|
|
|
|
|
|
|
|
/* Have we parsed this objfile's probes already? */
|
|
|
|
|
|
probes_per_objfile = objfile_data (objfile, probe_key);
|
|
|
|
|
|
|
|
|
|
|
|
if (!probes_per_objfile)
|
|
|
|
|
|
{
|
|
|
|
|
|
int ix;
|
|
|
|
|
|
const struct probe_ops *probe_ops;
|
|
|
|
|
|
|
|
|
|
|
|
/* Here we try to gather information about all types of probes from the
|
|
|
|
|
|
objfile. */
|
|
|
|
|
|
for (ix = 0; VEC_iterate (probe_ops_cp, all_probe_ops, ix, probe_ops);
|
|
|
|
|
|
ix++)
|
|
|
|
|
|
probe_ops->get_probes (&probes_per_objfile, objfile);
|
|
|
|
|
|
|
|
|
|
|
|
if (probes_per_objfile == NULL)
|
|
|
|
|
|
{
|
|
|
|
|
|
VEC_reserve (probe_p, probes_per_objfile, 1);
|
|
|
|
|
|
gdb_assert (probes_per_objfile != NULL);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
set_objfile_data (objfile, probe_key, probes_per_objfile);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
return probes_per_objfile;
|
|
|
|
|
|
}
|
|
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/* Implementation of `sym_relocate_probe', as documented in symfile.h. */
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static void
|
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elf_symfile_relocate_probe (struct objfile *objfile,
|
2013-05-07 03:15:17 +08:00
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const struct section_offsets *new_offsets,
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const struct section_offsets *delta)
|
2012-04-28 04:47:57 +08:00
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{
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int ix;
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VEC (probe_p) *probes = objfile_data (objfile, probe_key);
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struct probe *probe;
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for (ix = 0; VEC_iterate (probe_p, probes, ix, probe); ix++)
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probe->pops->relocate (probe, ANOFFSET (delta, SECT_OFF_TEXT (objfile)));
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}
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/* Helper function used to free the space allocated for storing SystemTap
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probe information. */
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static void
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probe_key_free (struct objfile *objfile, void *d)
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|
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|
{
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|
int ix;
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VEC (probe_p) *probes = d;
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|
struct probe *probe;
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for (ix = 0; VEC_iterate (probe_p, probes, ix, probe); ix++)
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probe->pops->destroy (probe);
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VEC_free (probe_p, probes);
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}
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|
1999-04-16 09:35:26 +08:00
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|
2012-04-28 04:47:57 +08:00
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/* Implementation `sym_probe_fns', as documented in symfile.h. */
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static const struct sym_probe_fns elf_probe_fns =
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{
|
2013-07-25 03:50:32 +08:00
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elf_get_probes, /* sym_get_probes */
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elf_symfile_relocate_probe, /* sym_relocate_probe */
|
2012-04-28 04:47:57 +08:00
|
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|
};
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|
1999-04-16 09:35:26 +08:00
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/* Register that we are able to handle ELF object file formats. */
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|
2010-10-01 03:14:30 +08:00
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static const struct sym_fns elf_sym_fns =
|
1999-04-16 09:35:26 +08:00
|
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|
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{
|
2011-01-06 06:22:53 +08:00
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elf_new_init, /* init anything gbl to entire symtab */
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elf_symfile_init, /* read initial info, setup for sym_read() */
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elf_symfile_read, /* read a symbol file into symtab */
|
2011-03-08 00:17:29 +08:00
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NULL, /* sym_read_psymbols */
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elf_symfile_finish, /* finished with file, cleanup */
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default_symfile_offsets, /* Translate ext. to int. relocation */
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elf_symfile_segments, /* Get segment information from a file. */
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NULL,
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|
|
|
default_symfile_relocate, /* Relocate a debug section. */
|
2012-04-28 04:47:57 +08:00
|
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|
|
&elf_probe_fns, /* sym_probe_fns */
|
2011-03-08 00:17:29 +08:00
|
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|
|
&psym_functions
|
|
|
|
|
|
};
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|
/* The same as elf_sym_fns, but not registered and lazily reads
|
|
|
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|
|
psymbols. */
|
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static const struct sym_fns elf_sym_fns_lazy_psyms =
|
|
|
|
|
|
{
|
|
|
|
|
|
elf_new_init, /* init anything gbl to entire symtab */
|
|
|
|
|
|
elf_symfile_init, /* read initial info, setup for sym_read() */
|
|
|
|
|
|
elf_symfile_read, /* read a symbol file into symtab */
|
|
|
|
|
|
read_psyms, /* sym_read_psymbols */
|
2011-01-06 06:22:53 +08:00
|
|
|
|
elf_symfile_finish, /* finished with file, cleanup */
|
|
|
|
|
|
default_symfile_offsets, /* Translate ext. to int. relocation */
|
|
|
|
|
|
elf_symfile_segments, /* Get segment information from a file. */
|
|
|
|
|
|
NULL,
|
|
|
|
|
|
default_symfile_relocate, /* Relocate a debug section. */
|
2012-04-28 04:47:57 +08:00
|
|
|
|
&elf_probe_fns, /* sym_probe_fns */
|
2010-10-01 03:14:30 +08:00
|
|
|
|
&psym_functions
|
1999-04-16 09:35:26 +08:00
|
|
|
|
};
|
|
|
|
|
|
|
2010-07-14 04:51:34 +08:00
|
|
|
|
/* The same as elf_sym_fns, but not registered and uses the
|
|
|
|
|
|
DWARF-specific GNU index rather than psymtab. */
|
2010-10-01 03:14:30 +08:00
|
|
|
|
static const struct sym_fns elf_sym_fns_gdb_index =
|
2010-07-14 04:51:34 +08:00
|
|
|
|
{
|
2011-01-06 06:22:53 +08:00
|
|
|
|
elf_new_init, /* init anything gbl to entire symab */
|
|
|
|
|
|
elf_symfile_init, /* read initial info, setup for sym_red() */
|
|
|
|
|
|
elf_symfile_read, /* read a symbol file into symtab */
|
2011-03-08 00:17:29 +08:00
|
|
|
|
NULL, /* sym_read_psymbols */
|
2011-01-06 06:22:53 +08:00
|
|
|
|
elf_symfile_finish, /* finished with file, cleanup */
|
|
|
|
|
|
default_symfile_offsets, /* Translate ext. to int. relocatin */
|
|
|
|
|
|
elf_symfile_segments, /* Get segment information from a file. */
|
|
|
|
|
|
NULL,
|
|
|
|
|
|
default_symfile_relocate, /* Relocate a debug section. */
|
2012-04-28 04:47:57 +08:00
|
|
|
|
&elf_probe_fns, /* sym_probe_fns */
|
2010-10-01 03:14:30 +08:00
|
|
|
|
&dwarf2_gdb_index_functions
|
2010-07-14 04:51:34 +08:00
|
|
|
|
};
|
|
|
|
|
|
|
gdb/
STT_GNU_IFUNC reader implementation.
* elfread.c: Include gdbtypes.h, value.h and infcall.h.
(SYMBOL_GOT_PLT_SUFFIX, elf_rel_plt_read)
(elf_objfile_gnu_ifunc_cache_data, struct elf_gnu_ifunc_cache)
(elf_gnu_ifunc_cache_hash, elf_gnu_ifunc_cache_eq)
(elf_gnu_ifunc_record_cache, elf_gnu_ifunc_resolve_by_cache)
(elf_gnu_ifunc_resolve_by_got, elf_gnu_ifunc_resolve_name)
(elf_gnu_ifunc_resolve_addr): New.
(elf_symfile_read): Call elf_rel_plt_read.
(elf_gnu_ifunc_fns): New.
(_initialize_elfread): Initialize elf_objfile_gnu_ifunc_cache_data.
Install elf_gnu_ifunc_fns.
* infcall.c (find_function_return_type): New function.
(find_function_addr): Resolve TYPE_GNU_IFUNC functions, if possible.
* minsyms.c (stub_gnu_ifunc_resolve_addr)
(stub_gnu_ifunc_resolve_name): New functions.
(stub_gnu_ifunc_fns, gnu_ifunc_fns_p): New variables.
* symtab.h (struct gnu_ifunc_fns, gnu_ifunc_resolve_addr)
(gnu_ifunc_resolve_name, gnu_ifunc_fns_p): New.
2011-03-29 04:26:24 +08:00
|
|
|
|
/* STT_GNU_IFUNC resolver vector to be installed to gnu_ifunc_fns_p. */
|
|
|
|
|
|
|
|
|
|
|
|
static const struct gnu_ifunc_fns elf_gnu_ifunc_fns =
|
|
|
|
|
|
{
|
|
|
|
|
|
elf_gnu_ifunc_resolve_addr,
|
|
|
|
|
|
elf_gnu_ifunc_resolve_name,
|
2011-03-29 04:29:51 +08:00
|
|
|
|
elf_gnu_ifunc_resolver_stop,
|
|
|
|
|
|
elf_gnu_ifunc_resolver_return_stop
|
gdb/
STT_GNU_IFUNC reader implementation.
* elfread.c: Include gdbtypes.h, value.h and infcall.h.
(SYMBOL_GOT_PLT_SUFFIX, elf_rel_plt_read)
(elf_objfile_gnu_ifunc_cache_data, struct elf_gnu_ifunc_cache)
(elf_gnu_ifunc_cache_hash, elf_gnu_ifunc_cache_eq)
(elf_gnu_ifunc_record_cache, elf_gnu_ifunc_resolve_by_cache)
(elf_gnu_ifunc_resolve_by_got, elf_gnu_ifunc_resolve_name)
(elf_gnu_ifunc_resolve_addr): New.
(elf_symfile_read): Call elf_rel_plt_read.
(elf_gnu_ifunc_fns): New.
(_initialize_elfread): Initialize elf_objfile_gnu_ifunc_cache_data.
Install elf_gnu_ifunc_fns.
* infcall.c (find_function_return_type): New function.
(find_function_addr): Resolve TYPE_GNU_IFUNC functions, if possible.
* minsyms.c (stub_gnu_ifunc_resolve_addr)
(stub_gnu_ifunc_resolve_name): New functions.
(stub_gnu_ifunc_fns, gnu_ifunc_fns_p): New variables.
* symtab.h (struct gnu_ifunc_fns, gnu_ifunc_resolve_addr)
(gnu_ifunc_resolve_name, gnu_ifunc_fns_p): New.
2011-03-29 04:26:24 +08:00
|
|
|
|
};
|
|
|
|
|
|
|
1999-04-16 09:35:26 +08:00
|
|
|
|
void
|
2000-07-30 09:48:28 +08:00
|
|
|
|
_initialize_elfread (void)
|
1999-04-16 09:35:26 +08:00
|
|
|
|
{
|
2012-04-28 04:47:57 +08:00
|
|
|
|
probe_key = register_objfile_data_with_cleanup (NULL, probe_key_free);
|
2013-09-26 06:48:19 +08:00
|
|
|
|
add_symtab_fns (bfd_target_elf_flavour, &elf_sym_fns);
|
gdb/
STT_GNU_IFUNC reader implementation.
* elfread.c: Include gdbtypes.h, value.h and infcall.h.
(SYMBOL_GOT_PLT_SUFFIX, elf_rel_plt_read)
(elf_objfile_gnu_ifunc_cache_data, struct elf_gnu_ifunc_cache)
(elf_gnu_ifunc_cache_hash, elf_gnu_ifunc_cache_eq)
(elf_gnu_ifunc_record_cache, elf_gnu_ifunc_resolve_by_cache)
(elf_gnu_ifunc_resolve_by_got, elf_gnu_ifunc_resolve_name)
(elf_gnu_ifunc_resolve_addr): New.
(elf_symfile_read): Call elf_rel_plt_read.
(elf_gnu_ifunc_fns): New.
(_initialize_elfread): Initialize elf_objfile_gnu_ifunc_cache_data.
Install elf_gnu_ifunc_fns.
* infcall.c (find_function_return_type): New function.
(find_function_addr): Resolve TYPE_GNU_IFUNC functions, if possible.
* minsyms.c (stub_gnu_ifunc_resolve_addr)
(stub_gnu_ifunc_resolve_name): New functions.
(stub_gnu_ifunc_fns, gnu_ifunc_fns_p): New variables.
* symtab.h (struct gnu_ifunc_fns, gnu_ifunc_resolve_addr)
(gnu_ifunc_resolve_name, gnu_ifunc_fns_p): New.
2011-03-29 04:26:24 +08:00
|
|
|
|
|
|
|
|
|
|
elf_objfile_gnu_ifunc_cache_data = register_objfile_data ();
|
|
|
|
|
|
gnu_ifunc_fns_p = &elf_gnu_ifunc_fns;
|
1999-04-16 09:35:26 +08:00
|
|
|
|
}
|
