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- /* Target-dependent code for Solaris x86.
- Copyright (C) 2002-2022 Free Software Foundation, Inc.
- This file is part of GDB.
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
- #include "defs.h"
- #include "value.h"
- #include "osabi.h"
- #include "sol2-tdep.h"
- #include "i386-tdep.h"
- #include "solib-svr4.h"
- /* From <ia32/sys/reg.h>. */
- static int i386_sol2_gregset_reg_offset[] =
- {
- 11 * 4, /* %eax */
- 10 * 4, /* %ecx */
- 9 * 4, /* %edx */
- 8 * 4, /* %ebx */
- 17 * 4, /* %esp */
- 6 * 4, /* %ebp */
- 5 * 4, /* %esi */
- 4 * 4, /* %edi */
- 14 * 4, /* %eip */
- 16 * 4, /* %eflags */
- 15 * 4, /* %cs */
- 18 * 4, /* %ss */
- 3 * 4, /* %ds */
- 2 * 4, /* %es */
- 1 * 4, /* %fs */
- 0 * 4 /* %gs */
- };
- /* Solaris doesn't have a `struct sigcontext', but it does have a
- `mcontext_t' that contains the saved set of machine registers. */
- static CORE_ADDR
- i386_sol2_mcontext_addr (struct frame_info *this_frame)
- {
- CORE_ADDR sp, ucontext_addr;
- sp = get_frame_register_unsigned (this_frame, I386_ESP_REGNUM);
- ucontext_addr = get_frame_memory_unsigned (this_frame, sp + 8, 4);
- return ucontext_addr + 36;
- }
- /* Solaris 2. */
- static void
- i386_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
- {
- i386_gdbarch_tdep *tdep = (i386_gdbarch_tdep *) gdbarch_tdep (gdbarch);
- /* Solaris is SVR4-based. */
- i386_svr4_init_abi (info, gdbarch);
- sol2_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 = 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_solib_svr4_fetch_link_map_offsets
- (gdbarch, svr4_ilp32_fetch_link_map_offsets);
- }
- static enum gdb_osabi
- i386_sol2_osabi_sniffer (bfd *abfd)
- {
- /* If we have a section named .SUNW_version, then it is almost
- certainly Solaris 2. */
- if (bfd_get_section_by_name (abfd, ".SUNW_version"))
- return GDB_OSABI_SOLARIS;
- return GDB_OSABI_UNKNOWN;
- }
- void _initialize_i386_sol2_tdep ();
- void
- _initialize_i386_sol2_tdep ()
- {
- /* Register an ELF OS ABI sniffer for Solaris 2 binaries. */
- gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_elf_flavour,
- i386_sol2_osabi_sniffer);
- gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_SOLARIS,
- i386_sol2_init_abi);
- }
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