1 /* Target-dependent code for Solaris x86.
2 Copyright 2002, 2003 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
25 #include "i386-tdep.h"
27 /* From <ia32/sys/reg.h>. */
28 static int i386_sol2_gregset_reg_offset[] =
49 i386_sol2_pc_in_sigtramp (CORE_ADDR pc, char *name)
51 /* Signal handler frames under Solaris 2 are recognized by a return
52 address of 0xffffffff. */
53 return (pc == 0xffffffff);
56 /* Solaris doesn't have a `struct sigcontext', but it does have a
57 `mcontext_t' that contains the saved set of machine registers. */
60 i386_sol2_mcontext_addr (struct frame_info *next_frame)
62 CORE_ADDR sp, ucontext_addr;
64 sp = frame_unwind_register_unsigned (next_frame, I386_ESP_REGNUM);
65 ucontext_addr = get_frame_memory_unsigned (next_frame, sp + 8, 4);
67 return ucontext_addr + 36;
73 i386_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
75 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
77 /* Solaris is SVR4-based. */
78 i386_svr4_init_abi (info, gdbarch);
80 /* Solaris reserves space for its FPU emulator in `fpregset_t'.
81 There is also some space reserved for the registers of a Weitek
83 tdep->gregset_reg_offset = i386_sol2_gregset_reg_offset;
84 tdep->gregset_num_regs = ARRAY_SIZE (i386_sol2_gregset_reg_offset);
85 tdep->sizeof_gregset = 19 * 4;
86 tdep->sizeof_fpregset = 380;
88 tdep->sigcontext_addr = i386_sol2_mcontext_addr;
89 tdep->sc_reg_offset = tdep->gregset_reg_offset;
90 tdep->sc_num_regs = tdep->gregset_num_regs;
92 /* Signal trampolines are slightly different from SVR4. */
93 set_gdbarch_pc_in_sigtramp (gdbarch, i386_sol2_pc_in_sigtramp);
98 i386_sol2_osabi_sniffer (bfd *abfd)
100 /* If we have a section named .SUNW_version, then it is almost
101 certainly Solaris 2. */
102 if (bfd_get_section_by_name (abfd, ".SUNW_version"))
103 return GDB_OSABI_SOLARIS;
105 return GDB_OSABI_UNKNOWN;
108 /* Provide a prototype to silence -Wmissing-prototypes. */
109 void _initialize_i386_sol2_tdep (void);
112 _initialize_i386_sol2_tdep (void)
114 /* Register an ELF OS ABI sniffer for Solaris 2 binaries. */
115 gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_elf_flavour,
116 i386_sol2_osabi_sniffer);
118 gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_SOLARIS,