C++ set_solib_svr4_fetch_link_map_offsets函数代码示例

static void
i386_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);

  /* Solaris is SVR4-based.  */
  i386_svr4_init_abi (info, gdbarch);

  /* Solaris reserves space for its FPU emulator in `fpregset_t'.
     There is also some space reserved for the registers of a Weitek
     math coprocessor.  */
  tdep->gregset_reg_offset = i386_sol2_gregset_reg_offset;
  tdep->gregset_num_regs = ARRAY_SIZE (i386_sol2_gregset_reg_offset);
  tdep->sizeof_gregset = 19 * 4;
  tdep->sizeof_fpregset = 380;

  /* Signal trampolines are slightly different from SVR4.  */
  tdep->sigtramp_p = i386_sol2_sigtramp_p;
  tdep->sigcontext_addr = i386_sol2_mcontext_addr;
  tdep->sc_reg_offset = tdep->gregset_reg_offset;
  tdep->sc_num_regs = tdep->gregset_num_regs;

  /* Solaris has SVR4-style shared libraries.  */
  set_gdbarch_skip_solib_resolver (gdbarch, sol2_skip_solib_resolver);
  set_solib_svr4_fetch_link_map_offsets
    (gdbarch, svr4_ilp32_fetch_link_map_offsets);
}

static void
vaxnbsd_elf_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
  /* NetBSD ELF uses SVR4-style shared libraries.  */
  set_solib_svr4_fetch_link_map_offsets
    (gdbarch, svr4_ilp32_fetch_link_map_offsets);
}

static void
i386fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);

  /* Obviously FreeBSD is BSD-based.  */
  i386bsd_init_abi (info, gdbarch);

  /* FreeBSD has a different `struct reg', and reserves some space for
     its FPU emulator in `struct fpreg'.  */
  tdep->gregset_reg_offset = i386fbsd_r_reg_offset;
  tdep->gregset_num_regs = ARRAY_SIZE (i386fbsd_r_reg_offset);
  tdep->sizeof_gregset = 18 * 4;
  tdep->sizeof_fpregset = 176;

  /* FreeBSD uses -freg-struct-return by default.  */
  tdep->struct_return = reg_struct_return;

  tdep->sigtramp_p = i386fbsd_sigtramp_p;

  /* FreeBSD uses a different memory layout.  */
  tdep->sigtramp_start = i386fbsd_sigtramp_start_addr;
  tdep->sigtramp_end = i386fbsd_sigtramp_end_addr;

  /* FreeBSD has a more complete `struct sigcontext'.  */
  tdep->sc_reg_offset = i386fbsd_sc_reg_offset;
  tdep->sc_num_regs = ARRAY_SIZE (i386fbsd_sc_reg_offset);

  i386_elf_init_abi (info, gdbarch);

  /* FreeBSD uses SVR4-style shared libraries.  */
  set_solib_svr4_fetch_link_map_offsets
    (gdbarch, svr4_ilp32_fetch_link_map_offsets);
}

static void
amd64obsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);

  amd64_init_abi (info, gdbarch);

  /* Initialize general-purpose register set details.  */
  tdep->gregset_reg_offset = amd64obsd_r_reg_offset;
  tdep->gregset_num_regs = ARRAY_SIZE (amd64obsd_r_reg_offset);
  tdep->sizeof_gregset = 24 * 8;

  set_gdbarch_regset_from_core_section (gdbarch,
					amd64obsd_regset_from_core_section);

  tdep->jb_pc_offset = 7 * 8;

  tdep->sigtramp_p = amd64obsd_sigtramp_p;
  tdep->sigcontext_addr = amd64obsd_sigcontext_addr;
  tdep->sc_reg_offset = amd64obsd_sc_reg_offset;
  tdep->sc_num_regs = ARRAY_SIZE (amd64obsd_sc_reg_offset);

  /* OpenBSD uses SVR4-style shared libraries.  */
  set_solib_svr4_fetch_link_map_offsets
    (gdbarch, svr4_lp64_fetch_link_map_offsets);
}

static void
nios2_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);

  linux_init_abi (info, gdbarch);

  /* Shared library handling.  */
  set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
  set_gdbarch_skip_solib_resolver (gdbarch, glibc_skip_solib_resolver);

  set_solib_svr4_fetch_link_map_offsets (gdbarch,
					 svr4_ilp32_fetch_link_map_offsets);
  /* Enable TLS support.  */
  set_gdbarch_fetch_tls_load_module_address (gdbarch,
                                             svr4_fetch_objfile_link_map);
  /* Core file support.  */
  set_gdbarch_regset_from_core_section (gdbarch,
                                        nios2_regset_from_core_section);
  /* Linux signal frame unwinders.  */
  tramp_frame_prepend_unwinder (gdbarch,
                                &nios2_linux_rt_sigreturn_tramp_frame);

  tdep->syscall_next_pc = nios2_linux_syscall_next_pc;

  /* Index of target address word in glibc jmp_buf.  */
  tdep->jb_pc = 10;
}

static void
riscv_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
  linux_init_abi (info, gdbarch);

  set_gdbarch_software_single_step (gdbarch, riscv_software_single_step);

  set_solib_svr4_fetch_link_map_offsets (gdbarch,
					 (riscv_isa_xlen (gdbarch) == 4
					  ? svr4_ilp32_fetch_link_map_offsets
					  : svr4_lp64_fetch_link_map_offsets));

  /* GNU/Linux uses SVR4-style shared libraries.  */
  set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);

  /* GNU/Linux uses the dynamic linker included in the GNU C Library.  */
  set_gdbarch_skip_solib_resolver (gdbarch, glibc_skip_solib_resolver);

  /* Enable TLS support.  */
  set_gdbarch_fetch_tls_load_module_address (gdbarch,
                                             svr4_fetch_objfile_link_map);

  set_gdbarch_iterate_over_regset_sections
    (gdbarch, riscv_linux_iterate_over_regset_sections);

  tramp_frame_prepend_unwinder (gdbarch, &riscv_linux_sigframe);
}

static void
amd64_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);

  tdep->gregset_reg_offset = amd64_sol2_gregset_reg_offset;
  tdep->gregset_num_regs = ARRAY_SIZE (amd64_sol2_gregset_reg_offset);
  tdep->sizeof_gregset = 28 * 8;

  amd64_init_abi (info, gdbarch,
		  amd64_target_description (X86_XSTATE_SSE_MASK, true));

  tdep->sigtramp_p = amd64_sol2_sigtramp_p;
  tdep->sigcontext_addr = amd64_sol2_mcontext_addr;
  tdep->sc_reg_offset = tdep->gregset_reg_offset;
  tdep->sc_num_regs = tdep->gregset_num_regs;

  /* Solaris uses SVR4-style shared libraries.  */
  set_gdbarch_skip_solib_resolver (gdbarch, sol2_skip_solib_resolver);
  set_solib_svr4_fetch_link_map_offsets
    (gdbarch, svr4_lp64_fetch_link_map_offsets);

  /* How to print LWP PTIDs from core files.  */
  set_gdbarch_core_pid_to_str (gdbarch, sol2_core_pid_to_str);
}

static void
amd64nbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);

  /* Initialize general-purpose register set details first.  */
  tdep->gregset_reg_offset = amd64nbsd_r_reg_offset;
  tdep->gregset_num_regs = ARRAY_SIZE (amd64nbsd_r_reg_offset);
  tdep->sizeof_gregset = 26 * 8;

  amd64_init_abi (info, gdbarch,
		  amd64_target_description (X86_XSTATE_SSE_MASK, true));

  tdep->jb_pc_offset = 7 * 8;

  /* NetBSD has its own convention for signal trampolines.  */
  tdep->sigtramp_p = amd64nbsd_sigtramp_p;
  tdep->sigcontext_addr = amd64nbsd_mcontext_addr;
  tdep->sc_reg_offset = amd64nbsd_r_reg_offset;
  tdep->sc_num_regs = ARRAY_SIZE (amd64nbsd_r_reg_offset);

  /* NetBSD uses SVR4-style shared libraries.  */
  set_solib_svr4_fetch_link_map_offsets
    (gdbarch, svr4_lp64_fetch_link_map_offsets);
}

static void
amd64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);

  tdep->gregset_reg_offset = amd64_linux_gregset_reg_offset;
  tdep->gregset_num_regs = ARRAY_SIZE (amd64_linux_gregset_reg_offset);
  tdep->sizeof_gregset = 27 * 8;

  amd64_init_abi (info, gdbarch);

  tdep->sigtramp_p = amd64_linux_sigtramp_p;
  tdep->sigcontext_addr = amd64_linux_sigcontext_addr;
  tdep->sc_reg_offset = amd64_linux_sc_reg_offset;
  tdep->sc_num_regs = ARRAY_SIZE (amd64_linux_sc_reg_offset);

  /* GNU/Linux uses SVR4-style shared libraries.  */
  set_solib_svr4_fetch_link_map_offsets
    (gdbarch, svr4_lp64_fetch_link_map_offsets);

  /* Add the %orig_rax register used for syscall restarting.  */
  set_gdbarch_write_pc (gdbarch, amd64_linux_write_pc);
  set_gdbarch_num_regs (gdbarch, AMD64_LINUX_NUM_REGS);
  set_gdbarch_register_name (gdbarch, amd64_linux_register_name);
  set_gdbarch_register_type (gdbarch, amd64_linux_register_type);
  set_gdbarch_register_reggroup_p (gdbarch, amd64_linux_register_reggroup_p);

  /* Enable TLS support.  */
  set_gdbarch_fetch_tls_load_module_address (gdbarch,
                                             svr4_fetch_objfile_link_map);
}

static void
i386_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);

  /* GNU/Linux uses ELF.  */
  i386_elf_init_abi (info, gdbarch);

  /* We support the SSE registers on GNU/Linux.  */
  tdep->num_xmm_regs = I386_NUM_XREGS - 1;
  /* set_gdbarch_num_regs (gdbarch, I386_SSE_NUM_REGS); */

  /* Since we have the extra "orig_eax" register on GNU/Linux, we have
     to adjust a few things.  */

  set_gdbarch_write_pc (gdbarch, i386_linux_write_pc);
  set_gdbarch_num_regs (gdbarch, I386_SSE_NUM_REGS + 1);
  set_gdbarch_register_name (gdbarch, i386_linux_register_name);
  set_gdbarch_register_bytes (gdbarch, I386_SSE_SIZEOF_REGS + 4);

  tdep->jb_pc_offset = 20;	/* From <bits/setjmp.h>.  */

  tdep->sigcontext_addr = i386_linux_sigcontext_addr;
  tdep->sc_pc_offset = 14 * 4;	/* From <asm/sigcontext.h>.  */
  tdep->sc_sp_offset = 7 * 4;

  /* When the i386 Linux kernel calls a signal handler, the return
     address points to a bit of code on the stack.  This function is
     used to identify this bit of code as a signal trampoline in order
     to support backtracing through calls to signal handlers.  */
  set_gdbarch_pc_in_sigtramp (gdbarch, i386_linux_pc_in_sigtramp);

  set_solib_svr4_fetch_link_map_offsets (gdbarch,
				       i386_linux_svr4_fetch_link_map_offsets);
}

static void
amd64obsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);

  amd64_init_abi (info, gdbarch);

  /* Initialize general-purpose register set details.  */
  tdep->gregset_reg_offset = amd64obsd_r_reg_offset;
  tdep->gregset_num_regs = ARRAY_SIZE (amd64obsd_r_reg_offset);
  tdep->sizeof_gregset = 24 * 8;

  set_gdbarch_regset_from_core_section (gdbarch,
					amd64obsd_regset_from_core_section);

  tdep->jb_pc_offset = 7 * 8;

  tdep->sigtramp_p = amd64obsd_sigtramp_p;
  tdep->sigcontext_addr = amd64obsd_sigcontext_addr;
  tdep->sc_reg_offset = amd64obsd_sc_reg_offset;
  tdep->sc_num_regs = ARRAY_SIZE (amd64obsd_sc_reg_offset);

  /* OpenBSD provides a user-level threads implementation.  */
  bsd_uthread_set_supply_uthread (gdbarch, amd64obsd_supply_uthread);
  bsd_uthread_set_collect_uthread (gdbarch, amd64obsd_collect_uthread);

  /* OpenBSD uses SVR4-style shared libraries.  */
  set_solib_svr4_fetch_link_map_offsets
    (gdbarch, svr4_lp64_fetch_link_map_offsets);

  /* Unwind kernel trap frames correctly.  */
  frame_unwind_prepend_unwinder (gdbarch, &amd64obsd_trapframe_unwind);
}

static void
mips_fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
  enum mips_abi abi = mips_abi (gdbarch);

  /* Generic FreeBSD support.  */
  fbsd_init_abi (info, gdbarch);

  set_gdbarch_software_single_step (gdbarch, mips_software_single_step);

  switch (abi)
    {
      case MIPS_ABI_O32:
	tramp_frame_prepend_unwinder (gdbarch, &mips_fbsd_sigframe);
	break;
      case MIPS_ABI_N32:
	tramp_frame_prepend_unwinder (gdbarch, &mipsn32_fbsd_sigframe);
	break;
      case MIPS_ABI_N64:
	tramp_frame_prepend_unwinder (gdbarch, &mips64_fbsd_sigframe);
	break;
    }

  set_gdbarch_iterate_over_regset_sections
    (gdbarch, mips_fbsd_iterate_over_regset_sections);

  /* FreeBSD/mips has SVR4-style shared libraries.  */
  set_solib_svr4_fetch_link_map_offsets
    (gdbarch, (gdbarch_ptr_bit (gdbarch) == 32 ?
	       mips_fbsd_ilp32_fetch_link_map_offsets :
	       mips_fbsd_lp64_fetch_link_map_offsets));
}

static void
i386_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);

  /* Solaris is SVR4-based.  */
  i386_svr4_init_abi (info, gdbarch);

  /* The SunPRO compiler puts out 0 instead of the address in N_SO symbols,
     and for SunPRO 3.0, N_FUN symbols too.  */
  set_gdbarch_sofun_address_maybe_missing (gdbarch, 1);

  /* Handle SunPRO encoding of static symbols.  */
  set_gdbarch_static_transform_name (gdbarch, i386_sol2_static_transform_name);

  /* Solaris reserves space for its FPU emulator in `fpregset_t'.
     There is also some space reserved for the registers of a Weitek
     math coprocessor.  */
  tdep->gregset_reg_offset = i386_sol2_gregset_reg_offset;
  tdep->gregset_num_regs = ARRAY_SIZE (i386_sol2_gregset_reg_offset);
  tdep->sizeof_gregset = 19 * 4;
  tdep->sizeof_fpregset = 380;

  /* Signal trampolines are slightly different from SVR4.  */
  tdep->sigtramp_p = i386_sol2_sigtramp_p;
  tdep->sigcontext_addr = i386_sol2_mcontext_addr;
  tdep->sc_reg_offset = tdep->gregset_reg_offset;
  tdep->sc_num_regs = tdep->gregset_num_regs;

  /* Solaris has SVR4-style shared libraries.  */
  set_gdbarch_skip_solib_resolver (gdbarch, sol2_skip_solib_resolver);
  set_solib_svr4_fetch_link_map_offsets
    (gdbarch, svr4_ilp32_fetch_link_map_offsets);
}

static void
alpha_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
  struct gdbarch_tdep *tdep;

  linux_init_abi (info, gdbarch);

  /* Hook into the DWARF CFI frame unwinder.  */
  alpha_dwarf2_init_abi (info, gdbarch);

  /* Hook into the MDEBUG frame unwinder.  */
  alpha_mdebug_init_abi (info, gdbarch);

  tdep = gdbarch_tdep (gdbarch);
  tdep->dynamic_sigtramp_offset = alpha_linux_sigtramp_offset;
  tdep->sigcontext_addr = alpha_linux_sigcontext_addr;
  tdep->pc_in_sigtramp = alpha_linux_pc_in_sigtramp;
  tdep->jb_pc = 2;
  tdep->jb_elt_size = 8;

  set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);

  set_solib_svr4_fetch_link_map_offsets
    (gdbarch, svr4_lp64_fetch_link_map_offsets);

  /* Enable TLS support.  */
  set_gdbarch_fetch_tls_load_module_address (gdbarch,
                                             svr4_fetch_objfile_link_map);

  set_gdbarch_regset_from_core_section
    (gdbarch, alpha_linux_regset_from_core_section);
}

void
sparc64_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);

  frame_unwind_append_unwinder (gdbarch, &sparc64_sol2_sigtramp_frame_unwind);

  sparc64_init_abi (info, gdbarch);

  /* The Sun compilers (Sun ONE Studio, Forte Developer, Sun WorkShop, SunPRO)
     compiler puts out 0 instead of the address in N_SO stabs.  Starting with
     SunPRO 3.0, the compiler does this for N_FUN stabs too.  */
  set_gdbarch_sofun_address_maybe_missing (gdbarch, 1);

  /* The Sun compilers also do "globalization"; see the comment in
     sparc_sol2_static_transform_name for more information.  */
  set_gdbarch_static_transform_name
    (gdbarch, sparc_sol2_static_transform_name);

  /* Solaris has SVR4-style shared libraries...  */
  set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
  set_gdbarch_skip_solib_resolver (gdbarch, sol2_skip_solib_resolver);
  set_solib_svr4_fetch_link_map_offsets
    (gdbarch, svr4_lp64_fetch_link_map_offsets);

  /* ...which means that we need some special handling when doing
     prologue analysis.  */
  tdep->plt_entry_size = 16;

  /* Solaris has kernel-assisted single-stepping support.  */
  set_gdbarch_software_single_step (gdbarch, NULL);

  /* How to print LWP PTIDs from core files.  */
  set_gdbarch_core_pid_to_str (gdbarch, sol2_core_pid_to_str);
}