mirror of
https://sourceware.org/git/binutils-gdb.git
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197e01b6dc
* arm-tdep.c: * ia64-tdep.c: * i386-tdep.c: * hpread.c: * hppa-tdep.c: * hppa-hpux-tdep.c: * gnu-nat.c: * gdbtypes.c: * gdbarch.h: * gdbarch.c: * eval.c: * dwarf2read.c: * dbxread.c: * copying: * symfile.c: * stabsread.c: * sh64-tdep.c: * sh-tdep.c: * s390-tdep.c: * rs6000-tdep.c: * remote.c: * remote-mips.c: * mips-tdep.c: * mdebugread.c: * linux-nat.c: * infrun.c: * xcoffread.c: * win32-nat.c: * valops.c: * utils.c: * tracepoint.c: * target.c: * symtab.c: * c-exp.y: * ada-valprint.c: * ada-typeprint.c: * ada-lex.l: * ada-lang.h: * ada-lang.c: * ada-exp.y: * alphafbsd-tdep.c: * alphabsd-tdep.h: * alphabsd-tdep.c: * alphabsd-nat.c: * alpha-tdep.h: * alpha-tdep.c: * alpha-osf1-tdep.c: * alpha-nat.c: * alpha-mdebug-tdep.c: * alpha-linux-tdep.c: * alpha-linux-nat.c: * aix-thread.c: * abug-rom.c: * arch-utils.c: * annotate.h: * annotate.c: * amd64obsd-tdep.c: * amd64obsd-nat.c: * amd64nbsd-tdep.c: * amd64nbsd-nat.c: * amd64fbsd-tdep.c: * amd64fbsd-nat.c: * amd64bsd-nat.c: * amd64-tdep.h: * amd64-tdep.c: * amd64-sol2-tdep.c: * amd64-nat.h: * amd64-nat.c: * amd64-linux-tdep.c: * amd64-linux-nat.c: * alphanbsd-tdep.c: * block.h: * block.c: * bfd-target.h: * bfd-target.c: * bcache.h: * bcache.c: * ax.h: * ax-general.c: * ax-gdb.h: * ax-gdb.c: * avr-tdep.c: * auxv.h: * auxv.c: * armnbsd-tdep.c: * armnbsd-nat.c: * arm-tdep.h: * arm-linux-nat.c: * arch-utils.h: * charset.c: * call-cmds.h: * c-valprint.c: * c-typeprint.c: * c-lang.h: * c-lang.c: * buildsym.h: * buildsym.c: * bsd-uthread.h: * bsd-uthread.c: * bsd-kvm.h: * bsd-kvm.c: * breakpoint.h: * core-regset.c: * core-aout.c: * completer.h: * completer.c: * complaints.h: * complaints.c: * command.h: * coffread.c: * coff-solib.h: * coff-solib.c: * coff-pe-read.h: * coff-pe-read.c: * cli-out.h: * cli-out.c: * charset.h: * dink32-rom.c: * dictionary.h: * dictionary.c: * demangle.c: * defs.h: * dcache.h: * dcache.c: * d10v-tdep.c: * cpu32bug-rom.c: * cp-valprint.c: * cp-support.h: * cp-support.c: * cp-namespace.c: * cp-abi.h: * cp-abi.c: * corelow.c: * corefile.c: * environ.c: * elfread.c: * dwarfread.c: * dwarf2loc.c: * dwarf2expr.h: * dwarf2expr.c: * dwarf2-frame.h: * dwarf2-frame.c: * dve3900-rom.c: * dummy-frame.h: * dummy-frame.c: * dsrec.c: * doublest.h: * doublest.c: * disasm.h: * disasm.c: * fork-child.c: * findvar.c: * fbsd-nat.h: * fbsd-nat.c: * f-valprint.c: * f-typeprint.c: * f-lang.h: * f-lang.c: * expression.h: * expprint.c: * exec.h: * exec.c: * exceptions.h: * exceptions.c: * event-top.h: * event-top.c: * event-loop.h: * event-loop.c: * gdb.c: * gdb-stabs.h: * gdb-events.h: * gdb-events.c: * gcore.c: * frv-tdep.h: * frv-tdep.c: * frv-linux-tdep.c: * frame.h: * frame.c: * frame-unwind.h: * frame-unwind.c: * frame-base.h: * frame-base.c: * gdb_vfork.h: * gdb_thread_db.h: * gdb_string.h: * gdb_stat.h: * gdb_regex.h: * gdb_ptrace.h: * gdb_proc_service.h: * gdb_obstack.h: * gdb_locale.h: * gdb_dirent.h: * gdb_curses.h: * gdb_assert.h: * gdbarch.sh: * gdb.h: * hpux-thread.c: * hppabsd-nat.c: * hppa-tdep.h: * hpacc-abi.c: * h8300-tdep.c: * gregset.h: * go32-nat.c: * gnu-v3-abi.c: * gnu-v2-abi.h: * gnu-v2-abi.c: * gnu-nat.h: * glibc-tdep.c: * gdbtypes.h: * gdbcore.h: * gdbcmd.h: * i386nbsd-tdep.c: * i386nbsd-nat.c: * i386gnu-tdep.c: * i386gnu-nat.c: * i386fbsd-tdep.c: * i386fbsd-nat.c: * i386bsd-tdep.c: * i386bsd-nat.h: * i386bsd-nat.c: * i386-tdep.h: * i386-sol2-nat.c: * i386-nto-tdep.c: * i386-nat.c: * i386-linux-tdep.h: * i386-linux-tdep.c: * i386-linux-nat.c: * i386-cygwin-tdep.c: * inf-ttrace.c: * inf-ptrace.h: * inf-ptrace.c: * inf-loop.h: * inf-loop.c: * inf-child.h: * inf-child.c: * ia64-tdep.h: * ia64-linux-nat.c: * i387-tdep.h: * i387-tdep.c: * i386v4-nat.c: * i386v-nat.c: * i386obsd-tdep.c: * i386obsd-nat.c: * kod.c: * jv-valprint.c: * jv-typeprint.c: * jv-lang.h: * jv-lang.c: * irix5-nat.c: * iq2000-tdep.c: * interps.h: * interps.c: * inftarg.c: * inflow.h: * inflow.c: * inferior.h: * infcmd.c: * infcall.h: * infcall.c: * inf-ttrace.h: * m32r-tdep.h: * m32r-tdep.c: * m32r-rom.c: * m32r-linux-tdep.c: * m32r-linux-nat.c: * m2-valprint.c: * m2-typeprint.c: * m2-lang.h: * m2-lang.c: * lynx-nat.c: * linux-thread-db.c: * linux-nat.h: * linespec.c: * libunwind-frame.h: * libunwind-frame.c: * language.h: * language.c: * macroexp.c: * macrocmd.c: * m88kbsd-nat.c: * m88k-tdep.h: * m88k-tdep.c: * m68klinux-tdep.c: * m68klinux-nat.c: * m68kbsd-tdep.c: * m68kbsd-nat.c: * m68k-tdep.h: * m68k-tdep.c: * mips-linux-nat.c: * mips-irix-tdep.c: * minsyms.c: * memattr.h: * memattr.c: * mem-break.c: * mdebugread.h: * main.h: * main.c: * macrotab.h: * macrotab.c: * macroscope.h: * macroscope.c: * macroexp.h: * nbsd-tdep.c: * mt-tdep.c: * monitor.h: * monitor.c: * mn10300-tdep.h: * mn10300-tdep.c: * mn10300-linux-tdep.c: * mipsv4-nat.c: * mipsread.c: * mipsnbsd-tdep.h: * mipsnbsd-tdep.c: * mipsnbsd-nat.c: * mips64obsd-tdep.c: * mips64obsd-nat.c: * mips-tdep.h: * mips-mdebug-tdep.c: * mips-linux-tdep.c: * osabi.h: * osabi.c: * ocd.h: * ocd.c: * observer.c: * objfiles.h: * objfiles.c: * objc-lang.h: * objc-lang.c: * objc-exp.y: * nto-tdep.h: * nto-tdep.c: * nto-procfs.c: * nlmread.c: * nbsd-tdep.h: * ppcobsd-tdep.c: * ppcobsd-nat.c: * ppcnbsd-tdep.h: * ppcnbsd-tdep.c: * ppcnbsd-nat.c: * ppcbug-rom.c: * ppc-tdep.h: * ppc-sysv-tdep.c: * ppc-linux-tdep.c: * ppc-linux-nat.c: * ppc-bdm.c: * parser-defs.h: * parse.c: * p-valprint.c: * p-typeprint.c: * p-lang.h: * p-lang.c: * remote-fileio.h: * remote-fileio.c: * remote-est.c: * remote-e7000.c: * regset.h: * regset.c: * reggroups.h: * reggroups.c: * regcache.h: * regcache.c: * proc-why.c: * proc-service.c: * proc-events.c: * printcmd.c: * ppcobsd-tdep.h: * sentinel-frame.h: * sentinel-frame.c: * scm-valprint.c: * scm-tags.h: * scm-lang.h: * scm-lang.c: * scm-exp.c: * s390-tdep.h: * rom68k-rom.c: * remote.h: * remote-utils.c: * remote-st.c: * remote-sim.c: * remote-sds.c: * remote-rdp.c: * remote-rdi.c: * remote-hms.c: * sim-regno.h: * shnbsd-tdep.h: * shnbsd-tdep.c: * shnbsd-nat.c: * sh-tdep.h: * serial.h: * serial.c: * ser-unix.h: * ser-unix.c: * ser-tcp.c: * ser-pipe.c: * ser-go32.c: * ser-e7kpc.c: * ser-base.h: * ser-base.c: * solib.c: * solib-svr4.h: * solib-svr4.c: * solib-sunos.c: * solib-som.h: * solib-som.c: * solib-pa64.h: * solib-pa64.c: * solib-osf.c: * solib-null.c: * solib-legacy.c: * solib-irix.c: * solib-frv.c: * solib-aix5.c: * sol-thread.c: * sparc64-linux-tdep.c: * sparc64-linux-nat.c: * sparc-tdep.h: * sparc-tdep.c: * sparc-sol2-tdep.c: * sparc-sol2-nat.c: * sparc-nat.h: * sparc-nat.c: * sparc-linux-tdep.c: * sparc-linux-nat.c: * source.h: * source.c: * somread.c: * solist.h: * solib.h: * std-regs.c: * stack.h: * stack.c: * stabsread.h: * sparcobsd-tdep.c: * sparcnbsd-tdep.c: * sparcnbsd-nat.c: * sparc64obsd-tdep.c: * sparc64nbsd-tdep.c: * sparc64nbsd-nat.c: * sparc64fbsd-tdep.c: * sparc64fbsd-nat.c: * sparc64-tdep.h: * sparc64-tdep.c: * sparc64-sol2-tdep.c: * sparc64-nat.c: * ui-file.c: * typeprint.h: * typeprint.c: * tramp-frame.h: * tramp-frame.c: * trad-frame.h: * trad-frame.c: * tracepoint.h: * top.c: * tobs.inc: * thread.c: * terminal.h: * target.h: * symfile.h: * stop-gdb.c: * vaxbsd-nat.c: * vax-tdep.h: * vax-tdep.c: * vax-nat.c: * varobj.h: * varobj.c: * value.h: * value.c: * valprint.h: * valprint.c: * v850-tdep.c: * uw-thread.c: * user-regs.c: * ui-out.h: * ui-out.c: * ui-file.h: * xcoffsolib.h: * xcoffsolib.c: * wrapper.c: * wince.c: * wince-stub.h: * wince-stub.c: * vaxobsd-tdep.c: * vaxnbsd-tdep.c: * gdb_gcore.sh: * copying.c: * configure.ac: * aclocal.m4: * acinclude.m4: * reply_mig_hack.awk: * observer.sh: * gdb_mbuild.sh: * arm-linux-tdep.c: * blockframe.c: * dbug-rom.c: * environ.h: * dwarf2loc.h: * gdb-events.sh: * glibc-tdep.h: * gdb_wait.h: * gdbthread.h: * i386-sol2-tdep.c: * hppabsd-tdep.c: * hppa-linux-nat.c: * hppa-hpux-nat.c: * ia64-linux-tdep.c: * infptrace.c: * linespec.h: * maint.c: * mips-mdebug-tdep.h: * remote-m32r-sdi.c: * s390-nat.c: * rs6000-nat.c: * remote-utils.h: * sh3-rom.c: * sh-linux-tdep.c: * top.h: * symtab.h: * symmisc.c: * symfile-mem.c: * srec.h: * user-regs.h: * version.h: * valarith.c: * xstormy16-tdep.c: * wrapper.h: * Makefile.in: * f-exp.y: * cris-tdep.c: * cp-name-parser.y: * procfs.c: * proc-utils.h: * proc-flags.c: * proc-api.c: * p-exp.y: * m68hc11-tdep.c: * m2-exp.y: * kod.h: * kod-cisco.c: * jv-exp.y: * hppa-linux-tdep.c: Add (c) after Copyright. Update the FSF address.
301 lines
7.7 KiB
C
301 lines
7.7 KiB
C
/* Target-dependent code for QNX Neutrino x86.
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Copyright (C) 2003, 2004 Free Software Foundation, Inc.
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Contributed by QNX Software Systems Ltd.
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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 2 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, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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#include "defs.h"
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#include "frame.h"
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#include "osabi.h"
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#include "regcache.h"
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#include "target.h"
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#include "gdb_assert.h"
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#include "gdb_string.h"
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#include "i386-tdep.h"
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#include "i387-tdep.h"
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#include "nto-tdep.h"
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#include "solib-svr4.h"
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/* Target vector for QNX NTO x86. */
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static struct nto_target_ops i386_nto_target;
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#ifndef X86_CPU_FXSR
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#define X86_CPU_FXSR (1L << 12)
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#endif
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/* Why 13? Look in our /usr/include/x86/context.h header at the
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x86_cpu_registers structure and you'll see an 'exx' junk register
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that is just filler. Don't ask me, ask the kernel guys. */
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#define NUM_GPREGS 13
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/* Mapping between the general-purpose registers in `struct xxx'
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format and GDB's register cache layout. */
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/* From <x86/context.h>. */
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static int i386nto_gregset_reg_offset[] =
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{
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7 * 4, /* %eax */
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6 * 4, /* %ecx */
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5 * 4, /* %edx */
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4 * 4, /* %ebx */
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11 * 4, /* %esp */
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2 * 4, /* %epb */
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1 * 4, /* %esi */
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0 * 4, /* %edi */
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8 * 4, /* %eip */
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10 * 4, /* %eflags */
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9 * 4, /* %cs */
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12 * 4, /* %ss */
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-1 /* filler */
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};
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/* Given a GDB register number REGNUM, return the offset into
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Neutrino's register structure or -1 if the register is unknown. */
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static int
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nto_reg_offset (int regnum)
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{
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if (regnum >= 0 && regnum < ARRAY_SIZE (i386nto_gregset_reg_offset))
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return i386nto_gregset_reg_offset[regnum];
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return -1;
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}
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static void
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i386nto_supply_gregset (char *gpregs)
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{
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struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
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if(tdep->gregset == NULL)
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tdep->gregset = regset_alloc (current_gdbarch, i386_supply_gregset,
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i386_collect_gregset);
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gdb_assert (tdep->gregset_reg_offset == i386nto_gregset_reg_offset);
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tdep->gregset->supply_regset (tdep->gregset, current_regcache, -1,
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gpregs, NUM_GPREGS * 4);
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}
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static void
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i386nto_supply_fpregset (char *fpregs)
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{
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if (nto_cpuinfo_valid && nto_cpuinfo_flags | X86_CPU_FXSR)
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i387_supply_fxsave (current_regcache, -1, fpregs);
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else
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i387_supply_fsave (current_regcache, -1, fpregs);
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}
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static void
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i386nto_supply_regset (int regset, char *data)
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{
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switch (regset)
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{
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case NTO_REG_GENERAL:
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i386nto_supply_gregset (data);
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break;
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case NTO_REG_FLOAT:
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i386nto_supply_fpregset (data);
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break;
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}
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}
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static int
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i386nto_regset_id (int regno)
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{
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if (regno == -1)
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return NTO_REG_END;
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else if (regno < I386_NUM_GREGS)
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return NTO_REG_GENERAL;
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else if (regno < I386_NUM_GREGS + I386_NUM_FREGS)
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return NTO_REG_FLOAT;
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return -1; /* Error. */
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}
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static int
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i386nto_register_area (int regno, int regset, unsigned *off)
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{
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int len;
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*off = 0;
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if (regset == NTO_REG_GENERAL)
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{
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if (regno == -1)
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return NUM_GPREGS * 4;
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*off = nto_reg_offset (regno);
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if (*off == -1)
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return 0;
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return 4;
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}
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else if (regset == NTO_REG_FLOAT)
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{
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unsigned off_adjust, regsize, regset_size;
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if (nto_cpuinfo_valid && nto_cpuinfo_flags | X86_CPU_FXSR)
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{
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off_adjust = 32;
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regsize = 16;
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regset_size = 512;
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}
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else
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{
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off_adjust = 28;
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regsize = 10;
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regset_size = 128;
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}
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if (regno == -1)
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return regset_size;
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*off = (regno - FP0_REGNUM) * regsize + off_adjust;
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return 10;
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/* Why 10 instead of regsize? GDB only stores 10 bytes per FP
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register so if we're sending a register back to the target,
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we only want pdebug to write 10 bytes so as not to clobber
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the reserved 6 bytes in the fxsave structure. */
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}
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return -1;
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}
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static int
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i386nto_regset_fill (int regset, char *data)
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{
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if (regset == NTO_REG_GENERAL)
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{
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int regno;
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for (regno = 0; regno < NUM_GPREGS; regno++)
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{
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int offset = nto_reg_offset (regno);
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if (offset != -1)
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regcache_raw_collect (current_regcache, regno, data + offset);
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}
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}
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else if (regset == NTO_REG_FLOAT)
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{
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if (nto_cpuinfo_valid && nto_cpuinfo_flags | X86_CPU_FXSR)
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i387_fill_fxsave (data, -1);
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else
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i387_fill_fsave (data, -1);
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}
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else
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return -1;
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return 0;
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}
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/* Return whether the frame preceding NEXT_FRAME corresponds to a QNX
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Neutrino sigtramp routine. */
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static int
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i386nto_sigtramp_p (struct frame_info *next_frame)
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{
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CORE_ADDR pc = frame_pc_unwind (next_frame);
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char *name;
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find_pc_partial_function (pc, &name, NULL, NULL);
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return name && strcmp ("__signalstub", name) == 0;
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}
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#define I386_NTO_SIGCONTEXT_OFFSET 136
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/* Assuming NEXT_FRAME is a frame following a QNX Neutrino sigtramp
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routine, return the address of the associated sigcontext structure. */
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static CORE_ADDR
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i386nto_sigcontext_addr (struct frame_info *next_frame)
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{
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char buf[4];
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CORE_ADDR sp;
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frame_unwind_register (next_frame, I386_ESP_REGNUM, buf);
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sp = extract_unsigned_integer (buf, 4);
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return sp + I386_NTO_SIGCONTEXT_OFFSET;
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}
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static void
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init_i386nto_ops (void)
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{
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i386_nto_target.regset_id = i386nto_regset_id;
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i386_nto_target.supply_gregset = i386nto_supply_gregset;
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i386_nto_target.supply_fpregset = i386nto_supply_fpregset;
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i386_nto_target.supply_altregset = nto_dummy_supply_regset;
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|
i386_nto_target.supply_regset = i386nto_supply_regset;
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|
i386_nto_target.register_area = i386nto_register_area;
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|
i386_nto_target.regset_fill = i386nto_regset_fill;
|
|
i386_nto_target.fetch_link_map_offsets =
|
|
svr4_ilp32_fetch_link_map_offsets;
|
|
}
|
|
|
|
static void
|
|
i386nto_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
|
{
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
|
|
|
/* Deal with our strange signals. */
|
|
nto_initialize_signals ();
|
|
|
|
/* NTO uses ELF. */
|
|
i386_elf_init_abi (info, gdbarch);
|
|
|
|
/* Neutrino rewinds to look more normal. Need to override the i386
|
|
default which is [unfortunately] to decrement the PC. */
|
|
set_gdbarch_decr_pc_after_break (gdbarch, 0);
|
|
|
|
tdep->gregset_reg_offset = i386nto_gregset_reg_offset;
|
|
tdep->gregset_num_regs = ARRAY_SIZE (i386nto_gregset_reg_offset);
|
|
tdep->sizeof_gregset = NUM_GPREGS * 4;
|
|
|
|
tdep->sigtramp_p = i386nto_sigtramp_p;
|
|
tdep->sigcontext_addr = i386nto_sigcontext_addr;
|
|
tdep->sc_pc_offset = 56;
|
|
tdep->sc_sp_offset = 68;
|
|
|
|
/* Setjmp()'s return PC saved in EDX (5). */
|
|
tdep->jb_pc_offset = 20; /* 5x32 bit ints in. */
|
|
|
|
set_solib_svr4_fetch_link_map_offsets
|
|
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
|
|
|
|
/* Our loader handles solib relocations slightly differently than svr4. */
|
|
TARGET_SO_RELOCATE_SECTION_ADDRESSES = nto_relocate_section_addresses;
|
|
|
|
/* Supply a nice function to find our solibs. */
|
|
TARGET_SO_FIND_AND_OPEN_SOLIB = nto_find_and_open_solib;
|
|
|
|
/* Our linker code is in libc. */
|
|
TARGET_SO_IN_DYNSYM_RESOLVE_CODE = nto_in_dynsym_resolve_code;
|
|
|
|
nto_set_target (&i386_nto_target);
|
|
}
|
|
|
|
void
|
|
_initialize_i386nto_tdep (void)
|
|
{
|
|
init_i386nto_ops ();
|
|
gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_QNXNTO,
|
|
i386nto_init_abi);
|
|
gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_elf_flavour,
|
|
nto_elf_osabi_sniffer);
|
|
}
|