1 /* Target-dependent code for Solaris x86.
3 Copyright 2002, 2003, 2004 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
26 #include "i386-tdep.h"
28 /* From <ia32/sys/reg.h>. */
29 static int i386_sol2_gregset_reg_offset[] =
50 i386_sol2_sigtramp_p (struct frame_info *next_frame)
52 CORE_ADDR pc = frame_pc_unwind (next_frame);
54 /* Signal handler frames under Solaris 2 are recognized by a return
55 address of 0xffffffff. */
56 return (pc == 0xffffffff);
59 /* Solaris doesn't have a `struct sigcontext', but it does have a
60 `mcontext_t' that contains the saved set of machine registers. */
63 i386_sol2_mcontext_addr (struct frame_info *next_frame)
65 CORE_ADDR sp, ucontext_addr;
67 sp = frame_unwind_register_unsigned (next_frame, I386_ESP_REGNUM);
68 ucontext_addr = get_frame_memory_unsigned (next_frame, sp + 8, 4);
70 return ucontext_addr + 36;
76 i386_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
78 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
80 /* Solaris is SVR4-based. */
81 i386_svr4_init_abi (info, gdbarch);
83 /* Solaris reserves space for its FPU emulator in `fpregset_t'.
84 There is also some space reserved for the registers of a Weitek
86 tdep->gregset_reg_offset = i386_sol2_gregset_reg_offset;
87 tdep->gregset_num_regs = ARRAY_SIZE (i386_sol2_gregset_reg_offset);
88 tdep->sizeof_gregset = 19 * 4;
89 tdep->sizeof_fpregset = 380;
91 /* Signal trampolines are slightly different from SVR4. */
92 tdep->sigtramp_p = i386_sol2_sigtramp_p;
93 tdep->sigcontext_addr = i386_sol2_mcontext_addr;
94 tdep->sc_reg_offset = tdep->gregset_reg_offset;
95 tdep->sc_num_regs = tdep->gregset_num_regs;
100 i386_sol2_osabi_sniffer (bfd *abfd)
102 /* If we have a section named .SUNW_version, then it is almost
103 certainly Solaris 2. */
104 if (bfd_get_section_by_name (abfd, ".SUNW_version"))
105 return GDB_OSABI_SOLARIS;
107 return GDB_OSABI_UNKNOWN;
110 /* Provide a prototype to silence -Wmissing-prototypes. */
111 void _initialize_i386_sol2_tdep (void);
114 _initialize_i386_sol2_tdep (void)
116 /* Register an ELF OS ABI sniffer for Solaris 2 binaries. */
117 gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_elf_flavour,
118 i386_sol2_osabi_sniffer);
120 gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_SOLARIS,