* objfiles.h (pc_in_section): New prototype.
(in_plt_section): Remove name argument, replace prototype with static inline function. * mips-tdep.h: Include "objfiles.h". (in_mips_stubs_section): New function. * hppa-tdep.h (gdbarch_tdep): Remove name argument of in_solib_call_trampoline member. (hppa_in_solib_call_trampoline): Remove name argument. * objfiles.c (pc_in_section): New function. (in_plt_section): Remove function. * mips-linux-tdep.c: Include "objfiles.h". (mips_linux_in_dynsym_stub): Call in_mips_stubs_section. Remove name argument. Return 1 rather than the low 16-bit halfword of any instruction examined. (mips_linux_in_dynsym_resolve_code): Update mips_linux_in_dynsym_stub call accordingly. * mips-tdep.c (mips_stub_frame_sniffer): Use in_mips_stubs_section rather than an equivalent hand-coded sequence. * hppa-hpux-tdep.c (in_opd_section): Remove function. (hppa32_hpux_in_solib_call_trampoline): Remove name argument. (hppa64_hpux_in_solib_call_trampoline): Likewise. (hppa64_hpux_find_global_pointer): Use pc_in_section rather than in_opd_section. * hppa-tdep.c (hppa_stub_unwind_sniffer): Remove name argument on call to tdep->in_solib_call_trampoline. (hppa_in_solib_call_trampoline): Remove name argument, update according to in_plt_section change. (hppa_skip_trampoline_code): Update according to in_plt_section change. * aarch64-tdep.c (aarch64_stub_unwind_sniffer): Likewise. * arm-symbian-tdep.c (arm_symbian_skip_trampoline_code): Likewise. * arm-tdep.c (arm_stub_unwind_sniffer): Likewise. * hppa-linux-tdep.c (hppa_linux_find_global_pointer): Likewise. * hppabsd-tdep.c (hppabsd_find_global_pointer): Likewise. * nios2-tdep.c (nios2_stub_frame_sniffer): Likewise. * nto-tdep.c (nto_relocate_section_addresses): Likewise. * s390-tdep.c (s390_stub_frame_sniffer): Likewise. * sh-tdep.c (sh_stub_unwind_sniffer): Likewise. * solib-dsbt.c (dsbt_in_dynsym_resolve_code): Likewise. * solib-frv.c (frv_in_dynsym_resolve_code): Likewise. * solib-svr4.c (svr4_in_dynsym_resolve_code): Likewise. * solib-target.c (solib_target_in_dynsym_resolve_code): Likewise. * sparc-tdep.c (sparc_analyze_prologue): Likewise. * tic6x-tdep.c (tic6x_stub_unwind_sniffer): Likewise.
This commit is contained in:
Maciej W. Rozycki
parent
b9b26a166a
commit
3e5d3a5aaf
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@ -1,3 +1,51 @@
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2013-06-24 Maciej W. Rozycki <macro@codesourcery.com>
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* objfiles.h (pc_in_section): New prototype.
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(in_plt_section): Remove name argument, replace prototype with
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static inline function.
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* mips-tdep.h: Include "objfiles.h".
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(in_mips_stubs_section): New function.
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* hppa-tdep.h (gdbarch_tdep): Remove name argument of
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in_solib_call_trampoline member.
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(hppa_in_solib_call_trampoline): Remove name argument.
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* objfiles.c (pc_in_section): New function.
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(in_plt_section): Remove function.
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* mips-linux-tdep.c: Include "objfiles.h".
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(mips_linux_in_dynsym_stub): Call in_mips_stubs_section. Remove
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name argument. Return 1 rather than the low 16-bit halfword of
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any instruction examined.
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(mips_linux_in_dynsym_resolve_code): Update
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mips_linux_in_dynsym_stub call accordingly.
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* mips-tdep.c (mips_stub_frame_sniffer): Use in_mips_stubs_section
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rather than an equivalent hand-coded sequence.
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* hppa-hpux-tdep.c (in_opd_section): Remove function.
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(hppa32_hpux_in_solib_call_trampoline): Remove name argument.
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(hppa64_hpux_in_solib_call_trampoline): Likewise.
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(hppa64_hpux_find_global_pointer): Use pc_in_section rather than
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in_opd_section.
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* hppa-tdep.c (hppa_stub_unwind_sniffer): Remove name argument
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on call to tdep->in_solib_call_trampoline.
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(hppa_in_solib_call_trampoline): Remove name argument, update
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according to in_plt_section change.
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(hppa_skip_trampoline_code): Update according to in_plt_section
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change.
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* aarch64-tdep.c (aarch64_stub_unwind_sniffer): Likewise.
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* arm-symbian-tdep.c (arm_symbian_skip_trampoline_code):
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Likewise.
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* arm-tdep.c (arm_stub_unwind_sniffer): Likewise.
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* hppa-linux-tdep.c (hppa_linux_find_global_pointer): Likewise.
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* hppabsd-tdep.c (hppabsd_find_global_pointer): Likewise.
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* nios2-tdep.c (nios2_stub_frame_sniffer): Likewise.
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* nto-tdep.c (nto_relocate_section_addresses): Likewise.
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* s390-tdep.c (s390_stub_frame_sniffer): Likewise.
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* sh-tdep.c (sh_stub_unwind_sniffer): Likewise.
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* solib-dsbt.c (dsbt_in_dynsym_resolve_code): Likewise.
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* solib-frv.c (frv_in_dynsym_resolve_code): Likewise.
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* solib-svr4.c (svr4_in_dynsym_resolve_code): Likewise.
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* solib-target.c (solib_target_in_dynsym_resolve_code): Likewise.
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* sparc-tdep.c (sparc_analyze_prologue): Likewise.
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* tic6x-tdep.c (tic6x_stub_unwind_sniffer): Likewise.
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2013-06-24 Joel Brobecker <brobecker@adacore.com>
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* common/create-version.sh: Fix expansion of $host_alias
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@ -1094,7 +1094,7 @@ aarch64_stub_unwind_sniffer (const struct frame_unwind *self,
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gdb_byte dummy[4];
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addr_in_block = get_frame_address_in_block (this_frame);
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if (in_plt_section (addr_in_block, NULL)
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if (in_plt_section (addr_in_block)
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/* We also use the stub winder if the target memory is unreadable
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to avoid having the prologue unwinder trying to read it. */
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|| target_read_memory (get_frame_pc (this_frame), dummy, 4) != 0)
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@ -38,7 +38,7 @@ arm_symbian_skip_trampoline_code (struct frame_info *frame, CORE_ADDR pc)
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CORE_ADDR dest;
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gdb_byte buf[4];
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if (!in_plt_section (pc, NULL))
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if (!in_plt_section (pc))
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return 0;
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if (target_read_memory (pc, buf, 4) != 0)
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@ -2907,7 +2907,7 @@ arm_stub_unwind_sniffer (const struct frame_unwind *self,
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gdb_byte dummy[4];
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addr_in_block = get_frame_address_in_block (this_frame);
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if (in_plt_section (addr_in_block, NULL)
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if (in_plt_section (addr_in_block)
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/* We also use the stub winder if the target memory is unreadable
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to avoid having the prologue unwinder trying to read it. */
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|| target_read_memory (get_frame_pc (this_frame), dummy, 4) != 0)
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@ -65,28 +65,13 @@
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extern void _initialize_hppa_hpux_tdep (void);
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extern initialize_file_ftype _initialize_hppa_hpux_tdep;
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static int
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in_opd_section (CORE_ADDR pc)
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{
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struct obj_section *s;
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int retval = 0;
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s = find_pc_section (pc);
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retval = (s != NULL
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&& s->the_bfd_section->name != NULL
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&& strcmp (s->the_bfd_section->name, ".opd") == 0);
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return (retval);
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}
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/* Return one if PC is in the call path of a trampoline, else return zero.
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Note we return one for *any* call trampoline (long-call, arg-reloc), not
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just shared library trampolines (import, export). */
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static int
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hppa32_hpux_in_solib_call_trampoline (struct gdbarch *gdbarch,
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CORE_ADDR pc, char *name)
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hppa32_hpux_in_solib_call_trampoline (struct gdbarch *gdbarch, CORE_ADDR pc)
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{
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enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
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struct bound_minimal_symbol minsym;
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@ -156,8 +141,7 @@ hppa32_hpux_in_solib_call_trampoline (struct gdbarch *gdbarch,
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}
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static int
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hppa64_hpux_in_solib_call_trampoline (struct gdbarch *gdbarch,
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CORE_ADDR pc, char *name)
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hppa64_hpux_in_solib_call_trampoline (struct gdbarch *gdbarch, CORE_ADDR pc)
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{
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enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
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@ -798,7 +782,7 @@ hppa64_hpux_find_global_pointer (struct gdbarch *gdbarch,
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faddr = value_as_address (function);
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if (in_opd_section (faddr))
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if (pc_in_section (faddr, ".opd"))
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{
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target_read_memory (faddr, buf, sizeof (buf));
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return extract_unsigned_integer (&buf[24], 8, byte_order);
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@ -356,7 +356,7 @@ hppa_linux_find_global_pointer (struct gdbarch *gdbarch,
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/* If the address is in the plt section, then the real function hasn't
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yet been fixed up by the linker so we cannot determine the gp of
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that function. */
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if (in_plt_section (faddr, NULL))
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if (in_plt_section (faddr))
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return 0;
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faddr_sect = find_pc_section (faddr);
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@ -2417,7 +2417,7 @@ hppa_stub_unwind_sniffer (const struct frame_unwind *self,
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if (pc == 0
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|| (tdep->in_solib_call_trampoline != NULL
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&& tdep->in_solib_call_trampoline (gdbarch, pc, NULL))
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&& tdep->in_solib_call_trampoline (gdbarch, pc))
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|| gdbarch_in_solib_return_trampoline (gdbarch, pc, NULL))
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return 1;
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return 0;
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@ -2855,13 +2855,12 @@ hppa_in_dyncall (CORE_ADDR pc)
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}
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int
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hppa_in_solib_call_trampoline (struct gdbarch *gdbarch,
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CORE_ADDR pc, char *name)
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hppa_in_solib_call_trampoline (struct gdbarch *gdbarch, CORE_ADDR pc)
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{
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unsigned int insn[HPPA_MAX_INSN_PATTERN_LEN];
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struct unwind_table_entry *u;
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if (in_plt_section (pc, name) || hppa_in_dyncall (pc))
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if (in_plt_section (pc) || hppa_in_dyncall (pc))
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return 1;
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/* The GNU toolchain produces linker stubs without unwind
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@ -2918,13 +2917,13 @@ hppa_skip_trampoline_code (struct frame_info *frame, CORE_ADDR pc)
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/* fallthrough */
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}
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if (in_plt_section (pc, NULL))
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if (in_plt_section (pc))
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{
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pc = read_memory_typed_address (pc, func_ptr_type);
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/* If the PLT slot has not yet been resolved, the target will be
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the PLT stub. */
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if (in_plt_section (pc, NULL))
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if (in_plt_section (pc))
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{
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/* Sanity check: are we pointing to the PLT stub? */
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if (!hppa_match_insns (gdbarch, pc, hppa_plt_stub, insn))
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@ -90,11 +90,9 @@ struct gdbarch_tdep
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CORE_ADDR (*find_global_pointer) (struct gdbarch *, struct value *);
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/* For shared libraries, each call goes through a small piece of
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trampoline code in the ".plt", or equivalent, section.
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IN_SOLIB_CALL_TRAMPOLINE evaluates to nonzero if we are currently
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stopped in one of these. */
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int (*in_solib_call_trampoline) (struct gdbarch *gdbarch,
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CORE_ADDR pc, char *name);
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trampoline code in the ".plt" section. IN_SOLIB_CALL_TRAMPOLINE
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evaluates to nonzero if we are currently stopped in one of these. */
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int (*in_solib_call_trampoline) (struct gdbarch *gdbarch, CORE_ADDR pc);
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/* For targets that support multiple spaces, we may have additional stubs
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in the return path. These stubs are internal to the ABI, and users are
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@ -242,7 +240,7 @@ extern struct minimal_symbol *
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extern struct hppa_objfile_private *hppa_init_objfile_priv_data (struct objfile *objfile);
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extern int hppa_in_solib_call_trampoline (struct gdbarch *gdbarch,
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CORE_ADDR pc, char *name);
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CORE_ADDR pc);
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extern CORE_ADDR hppa_skip_trampoline_code (struct frame_info *, CORE_ADDR pc);
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#endif /* hppa-tdep.h */
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@ -47,7 +47,7 @@ hppabsd_find_global_pointer (struct gdbarch *gdbarch, struct value *function)
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/* If the address is in the .plt section, then the real function
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hasn't yet been fixed up by the linker so we cannot determine the
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Global Pointer for that function. */
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if (in_plt_section (faddr, NULL))
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if (in_plt_section (faddr))
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return 0;
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faddr_sec = find_pc_section (faddr);
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@ -30,6 +30,7 @@
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#include "trad-frame.h"
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#include "tramp-frame.h"
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#include "gdbtypes.h"
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#include "objfiles.h"
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#include "solib.h"
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#include "solib-svr4.h"
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#include "solist.h"
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@ -666,25 +667,34 @@ mips_linux_core_read_description (struct gdbarch *gdbarch,
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/* Check the code at PC for a dynamic linker lazy resolution stub.
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Because they aren't in the .plt section, we pattern-match on the
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code generated by GNU ld. They look like this:
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GNU ld for MIPS has put lazy resolution stubs into a ".MIPS.stubs"
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section uniformly since version 2.15. If the pc is in that section,
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then we are in such a stub. Before that ".stub" was used in 32-bit
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ELF binaries, however we do not bother checking for that since we
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have never had and that case should be extremely rare these days.
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Instead we pattern-match on the code generated by GNU ld. They look
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like this:
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lw t9,0x8010(gp)
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addu t7,ra
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jalr t9,ra
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addiu t8,zero,INDEX
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(with the appropriate doubleword instructions for N64). Also
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return the dynamic symbol index used in the last instruction. */
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(with the appropriate doubleword instructions for N64). As any lazy
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resolution stubs in microMIPS binaries will always be in a
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".MIPS.stubs" section we only ever verify standard MIPS patterns. */
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static int
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mips_linux_in_dynsym_stub (CORE_ADDR pc, char *name)
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mips_linux_in_dynsym_stub (CORE_ADDR pc)
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{
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gdb_byte buf[28], *p;
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ULONGEST insn, insn1;
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int n64 = (mips_abi (target_gdbarch ()) == MIPS_ABI_N64);
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enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ());
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if (in_mips_stubs_section (pc))
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return 1;
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read_memory (pc - 12, buf, 28);
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if (n64)
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@ -742,7 +752,7 @@ mips_linux_in_dynsym_stub (CORE_ADDR pc, char *name)
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return 0;
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}
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return (insn & 0xffff);
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return 1;
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}
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/* Return non-zero iff PC belongs to the dynamic linker resolution
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@ -756,9 +766,10 @@ mips_linux_in_dynsym_resolve_code (CORE_ADDR pc)
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if (svr4_in_dynsym_resolve_code (pc))
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return 1;
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/* Pattern match for the stub. It would be nice if there were a
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more efficient way to avoid this check. */
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if (mips_linux_in_dynsym_stub (pc, NULL))
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/* Likewise for the stubs. They live in the .MIPS.stubs section these
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days, so we check if the PC is within, than fall back to a pattern
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match. */
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if (mips_linux_in_dynsym_stub (pc))
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return 1;
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return 0;
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@ -3588,15 +3588,7 @@ mips_stub_frame_sniffer (const struct frame_unwind *self,
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if (target_read_memory (get_frame_pc (this_frame), dummy, 4) != 0)
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return 1;
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if (in_plt_section (pc, NULL))
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return 1;
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/* Binutils for MIPS puts lazy resolution stubs into .MIPS.stubs. */
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s = find_pc_section (pc);
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if (s != NULL
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&& strcmp (bfd_get_section_name (s->objfile->obfd, s->the_bfd_section),
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".MIPS.stubs") == 0)
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if (in_plt_section (pc) || in_mips_stubs_section (pc))
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return 1;
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/* Calling a PIC function from a non-PIC function passes through a
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|
|
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@ -20,6 +20,8 @@
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#ifndef MIPS_TDEP_H
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#define MIPS_TDEP_H
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#include "objfiles.h"
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struct gdbarch;
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/* All the possible MIPS ABIs. */
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@ -184,4 +186,12 @@ extern void mips_write_pc (struct regcache *regcache, CORE_ADDR pc);
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extern struct target_desc *mips_tdesc_gp32;
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extern struct target_desc *mips_tdesc_gp64;
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/* Return non-zero if PC is in a MIPS SVR4 lazy binding stub section. */
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static inline int
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in_mips_stubs_section (CORE_ADDR pc)
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{
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return pc_in_section (pc, ".MIPS.stubs");
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}
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#endif /* MIPS_TDEP_H */
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|
|
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@ -1324,7 +1324,7 @@ nios2_stub_frame_sniffer (const struct frame_unwind *self,
|
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if (target_read_memory (get_frame_pc (this_frame), dummy, 4) != 0)
|
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return 1;
|
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|
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if (in_plt_section (pc, NULL))
|
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if (in_plt_section (pc))
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return 1;
|
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return 0;
|
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|
|
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|
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@ -318,7 +318,7 @@ nto_relocate_section_addresses (struct so_list *so, struct target_section *sec)
|
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int
|
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nto_in_dynsym_resolve_code (CORE_ADDR pc)
|
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{
|
||||
if (in_plt_section (pc, NULL))
|
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if (in_plt_section (pc))
|
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return 1;
|
||||
return 0;
|
||||
}
|
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|
|
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|
|
@ -1410,12 +1410,10 @@ find_pc_section (CORE_ADDR pc)
|
|||
}
|
||||
|
||||
|
||||
/* In SVR4, we recognize a trampoline by it's section name.
|
||||
That is, if the pc is in a section named ".plt" then we are in
|
||||
a trampoline. */
|
||||
/* Return non-zero if PC is in a section called NAME. */
|
||||
|
||||
int
|
||||
in_plt_section (CORE_ADDR pc, char *name)
|
||||
pc_in_section (CORE_ADDR pc, char *name)
|
||||
{
|
||||
struct obj_section *s;
|
||||
int retval = 0;
|
||||
|
|
@ -1424,7 +1422,7 @@ in_plt_section (CORE_ADDR pc, char *name)
|
|||
|
||||
retval = (s != NULL
|
||||
&& s->the_bfd_section->name != NULL
|
||||
&& strcmp (s->the_bfd_section->name, ".plt") == 0);
|
||||
&& strcmp (s->the_bfd_section->name, name) == 0);
|
||||
return (retval);
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -495,7 +495,17 @@ extern int have_minimal_symbols (void);
|
|||
|
||||
extern struct obj_section *find_pc_section (CORE_ADDR pc);
|
||||
|
||||
extern int in_plt_section (CORE_ADDR, char *);
|
||||
/* Return non-zero if PC is in a section called NAME. */
|
||||
extern int pc_in_section (CORE_ADDR, char *);
|
||||
|
||||
/* Return non-zero if PC is in a SVR4-style procedure linkage table
|
||||
section. */
|
||||
|
||||
static inline int
|
||||
in_plt_section (CORE_ADDR pc)
|
||||
{
|
||||
return pc_in_section (pc, ".plt");
|
||||
}
|
||||
|
||||
/* Keep a registry of per-objfile data-pointers required by other GDB
|
||||
modules. */
|
||||
|
|
|
|||
|
|
@ -2116,7 +2116,7 @@ s390_stub_frame_sniffer (const struct frame_unwind *self,
|
|||
have trapped due to an invalid function pointer call. We handle
|
||||
the non-existing current function like a PLT stub. */
|
||||
addr_in_block = get_frame_address_in_block (this_frame);
|
||||
if (in_plt_section (addr_in_block, NULL)
|
||||
if (in_plt_section (addr_in_block)
|
||||
|| s390_readinstruction (insn, get_frame_pc (this_frame)) < 0)
|
||||
return 1;
|
||||
return 0;
|
||||
|
|
|
|||
|
|
@ -2036,7 +2036,7 @@ sh_stub_unwind_sniffer (const struct frame_unwind *self,
|
|||
CORE_ADDR addr_in_block;
|
||||
|
||||
addr_in_block = get_frame_address_in_block (this_frame);
|
||||
if (in_plt_section (addr_in_block, NULL))
|
||||
if (in_plt_section (addr_in_block))
|
||||
return 1;
|
||||
|
||||
return 0;
|
||||
|
|
|
|||
|
|
@ -764,7 +764,7 @@ dsbt_in_dynsym_resolve_code (CORE_ADDR pc)
|
|||
|
||||
return ((pc >= info->interp_text_sect_low && pc < info->interp_text_sect_high)
|
||||
|| (pc >= info->interp_plt_sect_low && pc < info->interp_plt_sect_high)
|
||||
|| in_plt_section (pc, NULL));
|
||||
|| in_plt_section (pc));
|
||||
}
|
||||
|
||||
/* Print a warning about being unable to set the dynamic linker
|
||||
|
|
|
|||
|
|
@ -448,7 +448,7 @@ frv_in_dynsym_resolve_code (CORE_ADDR pc)
|
|||
{
|
||||
return ((pc >= interp_text_sect_low && pc < interp_text_sect_high)
|
||||
|| (pc >= interp_plt_sect_low && pc < interp_plt_sect_high)
|
||||
|| in_plt_section (pc, NULL));
|
||||
|| in_plt_section (pc));
|
||||
}
|
||||
|
||||
/* Given a loadmap and an address, return the displacement needed
|
||||
|
|
|
|||
|
|
@ -1532,7 +1532,7 @@ svr4_in_dynsym_resolve_code (CORE_ADDR pc)
|
|||
&& pc < info->interp_text_sect_high)
|
||||
|| (pc >= info->interp_plt_sect_low
|
||||
&& pc < info->interp_plt_sect_high)
|
||||
|| in_plt_section (pc, NULL)
|
||||
|| in_plt_section (pc)
|
||||
|| in_gnu_ifunc_stub (pc));
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -476,7 +476,7 @@ solib_target_in_dynsym_resolve_code (CORE_ADDR pc)
|
|||
/* We don't have a range of addresses for the dynamic linker; there
|
||||
may not be one in the program's address space. So only report
|
||||
PLT entries (which may be import stubs). */
|
||||
return in_plt_section (pc, NULL);
|
||||
return in_plt_section (pc);
|
||||
}
|
||||
|
||||
struct target_so_ops solib_target_so_ops;
|
||||
|
|
|
|||
|
|
@ -855,7 +855,7 @@ sparc_analyze_prologue (struct gdbarch *gdbarch, CORE_ADDR pc,
|
|||
dynamic linker patches up the first PLT with some code that
|
||||
starts with a SAVE instruction. Patch up PC such that it points
|
||||
at the start of our PLT entry. */
|
||||
if (tdep->plt_entry_size > 0 && in_plt_section (current_pc, NULL))
|
||||
if (tdep->plt_entry_size > 0 && in_plt_section (current_pc))
|
||||
pc = current_pc - ((current_pc - pc) % tdep->plt_entry_size);
|
||||
|
||||
insn = sparc_fetch_instruction (pc);
|
||||
|
|
|
|||
|
|
@ -530,7 +530,7 @@ tic6x_stub_unwind_sniffer (const struct frame_unwind *self,
|
|||
CORE_ADDR addr_in_block;
|
||||
|
||||
addr_in_block = get_frame_address_in_block (this_frame);
|
||||
if (in_plt_section (addr_in_block, NULL))
|
||||
if (in_plt_section (addr_in_block))
|
||||
return 1;
|
||||
|
||||
return 0;
|
||||
|
|
|
|||
Loading…
Reference in New Issue