mirror of
https://sourceware.org/git/binutils-gdb.git
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6d3d12ebef
This commit includes string.h in common-defs.h and removes all other inclusions. gdb/ 2014-08-07 Gary Benson <gbenson@redhat.com> * common/common-defs.h: Include string.h. * aarch64-tdep.c: Do not include string.h. * ada-exp.y: Likewise. * ada-lang.c: Likewise. * ada-lex.l: Likewise. * ada-typeprint.c: Likewise. * ada-valprint.c: Likewise. * aix-thread.c: Likewise. * alpha-linux-tdep.c: Likewise. * alpha-mdebug-tdep.c: Likewise. * alpha-nat.c: Likewise. * alpha-osf1-tdep.c: Likewise. * alpha-tdep.c: Likewise. * alphanbsd-tdep.c: Likewise. * amd64-dicos-tdep.c: Likewise. * amd64-linux-tdep.c: Likewise. * amd64-nat.c: Likewise. * amd64-sol2-tdep.c: Likewise. * amd64fbsd-tdep.c: Likewise. * amd64obsd-tdep.c: Likewise. * arch-utils.c: Likewise. * arm-linux-nat.c: Likewise. * arm-linux-tdep.c: Likewise. * arm-tdep.c: Likewise. * arm-wince-tdep.c: Likewise. * armbsd-tdep.c: Likewise. * armnbsd-nat.c: Likewise. * armnbsd-tdep.c: Likewise. * armobsd-tdep.c: Likewise. * avr-tdep.c: Likewise. * ax-gdb.c: Likewise. * ax-general.c: Likewise. * bcache.c: Likewise. * bfin-tdep.c: Likewise. * breakpoint.c: Likewise. * build-id.c: Likewise. * buildsym.c: Likewise. * c-exp.y: Likewise. * c-lang.c: Likewise. * c-typeprint.c: Likewise. * c-valprint.c: Likewise. * charset.c: Likewise. * cli-out.c: Likewise. * cli/cli-cmds.c: Likewise. * cli/cli-decode.c: Likewise. * cli/cli-dump.c: Likewise. * cli/cli-interp.c: Likewise. * cli/cli-logging.c: Likewise. * cli/cli-script.c: Likewise. * cli/cli-setshow.c: Likewise. * cli/cli-utils.c: Likewise. * coffread.c: Likewise. * common/agent.c: Likewise. * common/buffer.c: Likewise. * common/buffer.h: Likewise. * common/common-utils.c: Likewise. * common/filestuff.c: Likewise. * common/filestuff.c: Likewise. * common/format.c: Likewise. * common/print-utils.c: Likewise. * common/rsp-low.c: Likewise. * common/signals.c: Likewise. * common/vec.h: Likewise. * common/xml-utils.c: Likewise. * core-regset.c: Likewise. * corefile.c: Likewise. * corelow.c: Likewise. * cp-abi.c: Likewise. * cp-name-parser.y: Likewise. * cp-support.c: Likewise. * cp-valprint.c: Likewise. * cris-tdep.c: Likewise. * d-exp.y: Likewise. * darwin-nat.c: Likewise. * dbxread.c: Likewise. * dcache.c: Likewise. * demangle.c: Likewise. * dicos-tdep.c: Likewise. * disasm.c: Likewise. * doublest.c: Likewise. * dsrec.c: Likewise. * dummy-frame.c: Likewise. * dwarf2-frame.c: Likewise. * dwarf2loc.c: Likewise. * dwarf2read.c: Likewise. * elfread.c: Likewise. * environ.c: Likewise. * eval.c: Likewise. * event-loop.c: Likewise. * exceptions.c: Likewise. * exec.c: Likewise. * expprint.c: Likewise. * f-exp.y: Likewise. * f-lang.c: Likewise. * f-typeprint.c: Likewise. * f-valprint.c: Likewise. * fbsd-nat.c: Likewise. * findcmd.c: Likewise. * findvar.c: Likewise. * fork-child.c: Likewise. * frame.c: Likewise. * frv-linux-tdep.c: Likewise. * frv-tdep.c: Likewise. * gdb.c: Likewise. * gdb_bfd.c: Likewise. * gdbarch.c: Likewise. * gdbarch.sh: Likewise. * gdbtypes.c: Likewise. * gnu-nat.c: Likewise. * gnu-v2-abi.c: Likewise. * gnu-v3-abi.c: Likewise. * go-exp.y: Likewise. * go-lang.c: Likewise. * go32-nat.c: Likewise. * guile/guile.c: Likewise. * guile/scm-auto-load.c: Likewise. * hppa-hpux-tdep.c: Likewise. * hppa-linux-nat.c: Likewise. * hppanbsd-tdep.c: Likewise. * hppaobsd-tdep.c: Likewise. * i386-cygwin-tdep.c: Likewise. * i386-dicos-tdep.c: Likewise. * i386-linux-tdep.c: Likewise. * i386-nto-tdep.c: Likewise. * i386-sol2-tdep.c: Likewise. * i386-tdep.c: Likewise. * i386bsd-tdep.c: Likewise. * i386gnu-nat.c: Likewise. * i386nbsd-tdep.c: Likewise. * i386obsd-tdep.c: Likewise. * i387-tdep.c: Likewise. * ia64-libunwind-tdep.c: Likewise. * ia64-linux-nat.c: Likewise. * inf-child.c: Likewise. * inf-ptrace.c: Likewise. * inf-ttrace.c: Likewise. * infcall.c: Likewise. * infcmd.c: Likewise. * inflow.c: Likewise. * infrun.c: Likewise. * interps.c: Likewise. * iq2000-tdep.c: Likewise. * irix5-nat.c: Likewise. * jv-exp.y: Likewise. * jv-lang.c: Likewise. * jv-typeprint.c: Likewise. * jv-valprint.c: Likewise. * language.c: Likewise. * linux-fork.c: Likewise. * linux-nat.c: Likewise. * lm32-tdep.c: Likewise. * m2-exp.y: Likewise. * m2-typeprint.c: Likewise. * m32c-tdep.c: Likewise. * m32r-linux-nat.c: Likewise. * m32r-linux-tdep.c: Likewise. * m32r-rom.c: Likewise. * m32r-tdep.c: Likewise. * m68hc11-tdep.c: Likewise. * m68k-tdep.c: Likewise. * m68kbsd-tdep.c: Likewise. * m68klinux-nat.c: Likewise. * m68klinux-tdep.c: Likewise. * m88k-tdep.c: Likewise. * machoread.c: Likewise. * macrocmd.c: Likewise. * main.c: Likewise. * mdebugread.c: Likewise. * mem-break.c: Likewise. * memattr.c: Likewise. * memory-map.c: Likewise. * mep-tdep.c: Likewise. * mi/mi-cmd-break.c: Likewise. * mi/mi-cmd-disas.c: Likewise. * mi/mi-cmd-env.c: Likewise. * mi/mi-cmd-stack.c: Likewise. * mi/mi-cmd-var.c: Likewise. * mi/mi-cmds.c: Likewise. * mi/mi-console.c: Likewise. * mi/mi-getopt.c: Likewise. * mi/mi-interp.c: Likewise. * mi/mi-main.c: Likewise. * mi/mi-parse.c: Likewise. * microblaze-rom.c: Likewise. * microblaze-tdep.c: Likewise. * mingw-hdep.c: Likewise. * minidebug.c: Likewise. * minsyms.c: Likewise. * mips-irix-tdep.c: Likewise. * mips-linux-tdep.c: Likewise. * mips-tdep.c: Likewise. * mips64obsd-tdep.c: Likewise. * mipsnbsd-tdep.c: Likewise. * mipsread.c: Likewise. * mn10300-linux-tdep.c: Likewise. * mn10300-tdep.c: Likewise. * monitor.c: Likewise. * moxie-tdep.c: Likewise. * mt-tdep.c: Likewise. * nat/linux-btrace.c: Likewise. * nat/linux-osdata.c: Likewise. * nat/linux-procfs.c: Likewise. * nat/linux-ptrace.c: Likewise. * nat/linux-waitpid.c: Likewise. * nbsd-tdep.c: Likewise. * nios2-linux-tdep.c: Likewise. * nto-procfs.c: Likewise. * nto-tdep.c: Likewise. * objc-lang.c: Likewise. * objfiles.c: Likewise. * opencl-lang.c: Likewise. * osabi.c: Likewise. * osdata.c: Likewise. * p-exp.y: Likewise. * p-lang.c: Likewise. * p-typeprint.c: Likewise. * parse.c: Likewise. * posix-hdep.c: Likewise. * ppc-linux-nat.c: Likewise. * ppc-sysv-tdep.c: Likewise. * ppcfbsd-tdep.c: Likewise. * ppcnbsd-tdep.c: Likewise. * ppcobsd-tdep.c: Likewise. * printcmd.c: Likewise. * procfs.c: Likewise. * prologue-value.c: Likewise. * python/py-auto-load.c: Likewise. * python/py-gdb-readline.c: Likewise. * ravenscar-thread.c: Likewise. * regcache.c: Likewise. * registry.c: Likewise. * remote-fileio.c: Likewise. * remote-m32r-sdi.c: Likewise. * remote-mips.c: Likewise. * remote-notif.c: Likewise. * remote-sim.c: Likewise. * remote.c: Likewise. * reverse.c: Likewise. * rs6000-aix-tdep.c: Likewise. * ser-base.c: Likewise. * ser-go32.c: Likewise. * ser-mingw.c: Likewise. * ser-pipe.c: Likewise. * ser-tcp.c: Likewise. * ser-unix.c: Likewise. * serial.c: Likewise. * sh-tdep.c: Likewise. * sh64-tdep.c: Likewise. * shnbsd-tdep.c: Likewise. * skip.c: Likewise. * sol-thread.c: Likewise. * solib-dsbt.c: Likewise. * solib-frv.c: Likewise. * solib-osf.c: Likewise. * solib-som.c: Likewise. * solib-spu.c: Likewise. * solib-target.c: Likewise. * solib.c: Likewise. * somread.c: Likewise. * source.c: Likewise. * sparc-nat.c: Likewise. * sparc-sol2-tdep.c: Likewise. * sparc-tdep.c: Likewise. * sparc64-tdep.c: Likewise. * sparc64fbsd-tdep.c: Likewise. * sparc64nbsd-tdep.c: Likewise. * sparcnbsd-tdep.c: Likewise. * spu-linux-nat.c: Likewise. * spu-multiarch.c: Likewise. * spu-tdep.c: Likewise. * stabsread.c: Likewise. * stack.c: Likewise. * std-regs.c: Likewise. * symfile.c: Likewise. * symmisc.c: Likewise. * symtab.c: Likewise. * target.c: Likewise. * thread.c: Likewise. * tilegx-linux-nat.c: Likewise. * tilegx-tdep.c: Likewise. * top.c: Likewise. * tracepoint.c: Likewise. * tui/tui-command.c: Likewise. * tui/tui-data.c: Likewise. * tui/tui-disasm.c: Likewise. * tui/tui-file.c: Likewise. * tui/tui-layout.c: Likewise. * tui/tui-out.c: Likewise. * tui/tui-regs.c: Likewise. * tui/tui-source.c: Likewise. * tui/tui-stack.c: Likewise. * tui/tui-win.c: Likewise. * tui/tui-windata.c: Likewise. * tui/tui-winsource.c: Likewise. * typeprint.c: Likewise. * ui-file.c: Likewise. * ui-out.c: Likewise. * user-regs.c: Likewise. * utils.c: Likewise. * v850-tdep.c: Likewise. * valarith.c: Likewise. * valops.c: Likewise. * valprint.c: Likewise. * value.c: Likewise. * varobj.c: Likewise. * vax-tdep.c: Likewise. * vaxnbsd-tdep.c: Likewise. * vaxobsd-tdep.c: Likewise. * windows-nat.c: Likewise. * xcoffread.c: Likewise. * xml-support.c: Likewise. * xstormy16-tdep.c: Likewise. * xtensa-linux-nat.c: Likewise. gdb/gdbserver/ 2014-08-07 Gary Benson <gbenson@redhat.com> * server.h: Do not include string.h. * event-loop.c: Likewise. * linux-low.c: Likewise. * regcache.c: Likewise. * remote-utils.c: Likewise. * spu-low.c: Likewise. * utils.c: Likewise.
548 lines
16 KiB
C
548 lines
16 KiB
C
/* Read HP PA/Risc object files for GDB.
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Copyright (C) 1991-2014 Free Software Foundation, Inc.
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Written by Fred Fish at Cygnus Support.
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This file is part of GDB.
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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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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "bfd.h"
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#include "som/aout.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"
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#include "som.h"
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#include "libhppa.h"
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#include "psymtab.h"
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#include "solib-som.h"
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/* Read the symbol table of a SOM file.
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Given an open bfd, a base address to relocate symbols to, and a
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flag that specifies whether or not this bfd is for an executable
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or not (may be shared library for example), add all the global
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function and data symbols to the minimal symbol table. */
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static void
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som_symtab_read (bfd *abfd, struct objfile *objfile,
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struct section_offsets *section_offsets)
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{
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struct cleanup *cleanup;
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struct gdbarch *gdbarch = get_objfile_arch (objfile);
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unsigned int number_of_symbols;
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int val, dynamic;
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char *stringtab;
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asection *shlib_info;
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struct som_external_symbol_dictionary_record *buf, *bufp, *endbufp;
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char *symname;
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const int symsize = sizeof (struct som_external_symbol_dictionary_record);
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number_of_symbols = bfd_get_symcount (abfd);
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/* Allocate a buffer to read in the debug info.
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We avoid using alloca because the memory size could be so large
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that we could hit the stack size limit. */
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buf = xmalloc (symsize * number_of_symbols);
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cleanup = make_cleanup (xfree, buf);
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bfd_seek (abfd, obj_som_sym_filepos (abfd), SEEK_SET);
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val = bfd_bread (buf, symsize * number_of_symbols, abfd);
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if (val != symsize * number_of_symbols)
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error (_("Couldn't read symbol dictionary!"));
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/* Allocate a buffer to read in the som stringtab section of
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the debugging info. Again, we avoid using alloca because
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the data could be so large that we could potentially hit
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the stack size limitat. */
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stringtab = xmalloc (obj_som_stringtab_size (abfd));
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make_cleanup (xfree, stringtab);
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bfd_seek (abfd, obj_som_str_filepos (abfd), SEEK_SET);
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val = bfd_bread (stringtab, obj_som_stringtab_size (abfd), abfd);
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if (val != obj_som_stringtab_size (abfd))
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error (_("Can't read in HP string table."));
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/* We need to determine if objfile is a dynamic executable (so we
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can do the right thing for ST_ENTRY vs ST_CODE symbols).
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There's nothing in the header which easily allows us to do
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this.
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This code used to rely upon the existence of a $SHLIB_INFO$
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section to make this determination. HP claims that it is
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more accurate to check for a nonzero text offset, but they
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have not provided any information about why that test is
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more accurate. */
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dynamic = (ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)) != 0);
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endbufp = buf + number_of_symbols;
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for (bufp = buf; bufp < endbufp; ++bufp)
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{
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enum minimal_symbol_type ms_type;
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unsigned int flags = bfd_getb32 (bufp->flags);
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unsigned int symbol_type
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= (flags >> SOM_SYMBOL_TYPE_SH) & SOM_SYMBOL_TYPE_MASK;
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unsigned int symbol_scope
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= (flags >> SOM_SYMBOL_SCOPE_SH) & SOM_SYMBOL_SCOPE_MASK;
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CORE_ADDR symbol_value = bfd_getb32 (bufp->symbol_value);
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asection *section = NULL;
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QUIT;
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/* Compute the section. */
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switch (symbol_scope)
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{
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case SS_EXTERNAL:
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if (symbol_type != ST_STORAGE)
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section = bfd_und_section_ptr;
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else
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section = bfd_com_section_ptr;
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break;
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case SS_UNSAT:
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if (symbol_type != ST_STORAGE)
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section = bfd_und_section_ptr;
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else
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section = bfd_com_section_ptr;
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break;
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case SS_UNIVERSAL:
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section = bfd_section_from_som_symbol (abfd, bufp);
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break;
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case SS_LOCAL:
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section = bfd_section_from_som_symbol (abfd, bufp);
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break;
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}
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switch (symbol_scope)
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{
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case SS_UNIVERSAL:
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case SS_EXTERNAL:
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switch (symbol_type)
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{
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case ST_SYM_EXT:
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case ST_ARG_EXT:
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continue;
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case ST_CODE:
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case ST_PRI_PROG:
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case ST_SEC_PROG:
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case ST_MILLICODE:
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symname = bfd_getb32 (bufp->name) + stringtab;
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ms_type = mst_text;
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symbol_value = gdbarch_addr_bits_remove (gdbarch, symbol_value);
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break;
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case ST_ENTRY:
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symname = bfd_getb32 (bufp->name) + stringtab;
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/* For a dynamic executable, ST_ENTRY symbols are
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the stubs, while the ST_CODE symbol is the real
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function. */
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if (dynamic)
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ms_type = mst_solib_trampoline;
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else
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ms_type = mst_text;
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symbol_value = gdbarch_addr_bits_remove (gdbarch, symbol_value);
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break;
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case ST_STUB:
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symname = bfd_getb32 (bufp->name) + stringtab;
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ms_type = mst_solib_trampoline;
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symbol_value = gdbarch_addr_bits_remove (gdbarch, symbol_value);
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break;
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case ST_DATA:
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symname = bfd_getb32 (bufp->name) + stringtab;
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ms_type = mst_data;
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break;
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default:
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continue;
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}
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break;
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#if 0
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/* SS_GLOBAL and SS_LOCAL are two names for the same thing (!). */
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case SS_GLOBAL:
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#endif
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case SS_LOCAL:
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switch (symbol_type)
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{
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case ST_SYM_EXT:
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case ST_ARG_EXT:
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continue;
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case ST_CODE:
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symname = bfd_getb32 (bufp->name) + stringtab;
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ms_type = mst_file_text;
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symbol_value = gdbarch_addr_bits_remove (gdbarch, symbol_value);
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check_strange_names:
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/* Utah GCC 2.5, FSF GCC 2.6 and later generate correct local
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label prefixes for stabs, constant data, etc. So we need
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only filter out L$ symbols which are left in due to
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limitations in how GAS generates SOM relocations.
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When linking in the HPUX C-library the HP linker has
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the nasty habit of placing section symbols from the literal
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subspaces in the middle of the program's text. Filter
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those out as best we can. Check for first and last character
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being '$'.
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And finally, the newer HP compilers emit crud like $PIC_foo$N
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in some circumstance (PIC code I guess). It's also claimed
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that they emit D$ symbols too. What stupidity. */
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if ((symname[0] == 'L' && symname[1] == '$')
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|| (symname[0] == '$' && symname[strlen (symname) - 1] == '$')
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|| (symname[0] == 'D' && symname[1] == '$')
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|| (strncmp (symname, "L0\001", 3) == 0)
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|| (strncmp (symname, "$PIC", 4) == 0))
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continue;
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break;
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case ST_PRI_PROG:
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case ST_SEC_PROG:
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case ST_MILLICODE:
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symname = bfd_getb32 (bufp->name) + stringtab;
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ms_type = mst_file_text;
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symbol_value = gdbarch_addr_bits_remove (gdbarch, symbol_value);
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break;
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case ST_ENTRY:
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symname = bfd_getb32 (bufp->name) + stringtab;
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/* SS_LOCAL symbols in a shared library do not have
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export stubs, so we do not have to worry about
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using mst_file_text vs mst_solib_trampoline here like
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we do for SS_UNIVERSAL and SS_EXTERNAL symbols above. */
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ms_type = mst_file_text;
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symbol_value = gdbarch_addr_bits_remove (gdbarch, symbol_value);
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break;
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case ST_STUB:
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symname = bfd_getb32 (bufp->name) + stringtab;
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ms_type = mst_solib_trampoline;
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symbol_value = gdbarch_addr_bits_remove (gdbarch, symbol_value);
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break;
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case ST_DATA:
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symname = bfd_getb32 (bufp->name) + stringtab;
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ms_type = mst_file_data;
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goto check_strange_names;
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default:
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continue;
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}
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break;
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/* This can happen for common symbols when -E is passed to the
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final link. No idea _why_ that would make the linker force
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common symbols to have an SS_UNSAT scope, but it does.
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This also happens for weak symbols, but their type is
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ST_DATA. */
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case SS_UNSAT:
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switch (symbol_type)
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{
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case ST_STORAGE:
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case ST_DATA:
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symname = bfd_getb32 (bufp->name) + stringtab;
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ms_type = mst_data;
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break;
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default:
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continue;
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}
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break;
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default:
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continue;
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}
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if (bfd_getb32 (bufp->name) > obj_som_stringtab_size (abfd))
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error (_("Invalid symbol data; bad HP string table offset: %s"),
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plongest (bfd_getb32 (bufp->name)));
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if (bfd_is_const_section (section))
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{
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||
struct obj_section *iter;
|
||
|
||
ALL_OBJFILE_OSECTIONS (objfile, iter)
|
||
{
|
||
CORE_ADDR start;
|
||
CORE_ADDR len;
|
||
|
||
if (bfd_is_const_section (iter->the_bfd_section))
|
||
continue;
|
||
|
||
start = bfd_get_section_vma (iter->objfile->obfd,
|
||
iter->the_bfd_section);
|
||
len = bfd_get_section_size (iter->the_bfd_section);
|
||
if (start <= symbol_value && symbol_value < start + len)
|
||
{
|
||
section = iter->the_bfd_section;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
prim_record_minimal_symbol_and_info (symname, symbol_value, ms_type,
|
||
gdb_bfd_section_index (objfile->obfd,
|
||
section),
|
||
objfile);
|
||
}
|
||
|
||
do_cleanups (cleanup);
|
||
}
|
||
|
||
/* Scan and build partial symbols for a symbol file.
|
||
We have been initialized by a call to som_symfile_init, which
|
||
currently does nothing.
|
||
|
||
SECTION_OFFSETS is a set of offsets to apply to relocate the symbols
|
||
in each section. This is ignored, as it isn't needed for SOM.
|
||
|
||
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.
|
||
|
||
somstab_build_psymtabs() handles STABS symbols.
|
||
|
||
Note that SOM files have a "minimal" symbol table, which is vaguely
|
||
reminiscent of 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
|
||
som_symfile_read (struct objfile *objfile, int symfile_flags)
|
||
{
|
||
bfd *abfd = objfile->obfd;
|
||
struct cleanup *back_to;
|
||
|
||
init_minimal_symbol_collection ();
|
||
back_to = make_cleanup_discard_minimal_symbols ();
|
||
|
||
/* Process the normal SOM symbol table first.
|
||
This reads in the DNTT and string table, but doesn't
|
||
actually scan the DNTT. It does scan the linker symbol
|
||
table and thus build up a "minimal symbol table". */
|
||
|
||
som_symtab_read (abfd, objfile, objfile->section_offsets);
|
||
|
||
/* Install any minimal symbols that have been collected as the current
|
||
minimal symbols for this objfile.
|
||
Further symbol-reading is done incrementally, file-by-file,
|
||
in a step known as "psymtab-to-symtab" expansion. hp-symtab-read.c
|
||
contains the code to do the actual DNTT scanning and symtab building. */
|
||
install_minimal_symbols (objfile);
|
||
do_cleanups (back_to);
|
||
|
||
/* Now read information from the stabs debug sections.
|
||
This is emitted by gcc. */
|
||
stabsect_build_psymtabs (objfile,
|
||
"$GDB_SYMBOLS$", "$GDB_STRINGS$", "$TEXT$");
|
||
}
|
||
|
||
/* 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).
|
||
|
||
We reinitialize buildsym, since we may be reading stabs from a SOM file. */
|
||
|
||
static void
|
||
som_new_init (struct objfile *ignore)
|
||
{
|
||
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
|
||
objfile struct from the global list of known objfiles. */
|
||
|
||
static void
|
||
som_symfile_finish (struct objfile *objfile)
|
||
{
|
||
}
|
||
|
||
/* SOM specific initialization routine for reading symbols. */
|
||
|
||
static void
|
||
som_symfile_init (struct objfile *objfile)
|
||
{
|
||
/* SOM 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;
|
||
}
|
||
|
||
/* An object of this type is passed to find_section_offset. */
|
||
|
||
struct find_section_offset_arg
|
||
{
|
||
/* The objfile. */
|
||
|
||
struct objfile *objfile;
|
||
|
||
/* Flags to invert. */
|
||
|
||
flagword invert;
|
||
|
||
/* Flags to look for. */
|
||
|
||
flagword flags;
|
||
|
||
/* A text section with non-zero size, if any. */
|
||
|
||
asection *best_section;
|
||
|
||
/* An empty text section, if any. */
|
||
|
||
asection *empty_section;
|
||
};
|
||
|
||
/* A callback for bfd_map_over_sections that tries to find a section
|
||
with particular flags in an objfile. */
|
||
|
||
static void
|
||
find_section_offset (bfd *abfd, asection *sect, void *arg)
|
||
{
|
||
struct find_section_offset_arg *info = arg;
|
||
flagword aflag;
|
||
|
||
aflag = bfd_get_section_flags (abfd, sect);
|
||
|
||
aflag ^= info->invert;
|
||
|
||
if ((aflag & info->flags) == info->flags)
|
||
{
|
||
if (bfd_section_size (abfd, sect) > 0)
|
||
{
|
||
if (info->best_section == NULL)
|
||
info->best_section = sect;
|
||
}
|
||
else
|
||
{
|
||
if (info->empty_section == NULL)
|
||
info->empty_section = sect;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Set a section index from a BFD. */
|
||
|
||
static void
|
||
set_section_index (struct objfile *objfile, flagword invert, flagword flags,
|
||
int *index_ptr)
|
||
{
|
||
struct find_section_offset_arg info;
|
||
|
||
info.objfile = objfile;
|
||
info.best_section = NULL;
|
||
info.empty_section = NULL;
|
||
info.invert = invert;
|
||
info.flags = flags;
|
||
bfd_map_over_sections (objfile->obfd, find_section_offset, &info);
|
||
|
||
if (info.best_section)
|
||
*index_ptr = info.best_section->index;
|
||
else if (info.empty_section)
|
||
*index_ptr = info.empty_section->index;
|
||
}
|
||
|
||
/* SOM specific parsing routine for section offsets.
|
||
|
||
Plain and simple for now. */
|
||
|
||
static void
|
||
som_symfile_offsets (struct objfile *objfile,
|
||
const struct section_addr_info *addrs)
|
||
{
|
||
int i;
|
||
CORE_ADDR text_addr;
|
||
asection *sect;
|
||
|
||
objfile->num_sections = bfd_count_sections (objfile->obfd);
|
||
objfile->section_offsets = (struct section_offsets *)
|
||
obstack_alloc (&objfile->objfile_obstack,
|
||
SIZEOF_N_SECTION_OFFSETS (objfile->num_sections));
|
||
|
||
set_section_index (objfile, 0, SEC_ALLOC | SEC_CODE,
|
||
&objfile->sect_index_text);
|
||
set_section_index (objfile, 0, SEC_ALLOC | SEC_DATA,
|
||
&objfile->sect_index_data);
|
||
set_section_index (objfile, SEC_LOAD, SEC_ALLOC | SEC_LOAD,
|
||
&objfile->sect_index_bss);
|
||
set_section_index (objfile, 0, SEC_ALLOC | SEC_READONLY,
|
||
&objfile->sect_index_rodata);
|
||
|
||
/* First see if we're a shared library. If so, get the section
|
||
offsets from the library, else get them from addrs. */
|
||
if (!som_solib_section_offsets (objfile, objfile->section_offsets))
|
||
{
|
||
/* Note: Here is OK to compare with ".text" because this is the
|
||
name that gdb itself gives to that section, not the SOM
|
||
name. */
|
||
for (i = 0; i < addrs->num_sections; i++)
|
||
if (strcmp (addrs->other[i].name, ".text") == 0)
|
||
break;
|
||
text_addr = addrs->other[i].addr;
|
||
|
||
for (i = 0; i < objfile->num_sections; i++)
|
||
(objfile->section_offsets)->offsets[i] = text_addr;
|
||
}
|
||
}
|
||
|
||
|
||
|
||
/* Register that we are able to handle SOM object file formats. */
|
||
|
||
static const struct sym_fns som_sym_fns =
|
||
{
|
||
som_new_init, /* init anything gbl to entire symtab */
|
||
som_symfile_init, /* read initial info, setup for sym_read() */
|
||
som_symfile_read, /* read a symbol file into symtab */
|
||
NULL, /* sym_read_psymbols */
|
||
som_symfile_finish, /* finished with file, cleanup */
|
||
som_symfile_offsets, /* Translate ext. to int. relocation */
|
||
default_symfile_segments, /* Get segment information from a file. */
|
||
NULL,
|
||
default_symfile_relocate, /* Relocate a debug section. */
|
||
NULL, /* sym_get_probes */
|
||
&psym_functions
|
||
};
|
||
|
||
initialize_file_ftype _initialize_somread;
|
||
|
||
void
|
||
_initialize_somread (void)
|
||
{
|
||
add_symtab_fns (bfd_target_som_flavour, &som_sym_fns);
|
||
}
|