1 /* Target-dependent code for Solaris x86.
3 Copyright (C) 2002, 2003, 2004, 2006, 2007 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 3 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, see <http://www.gnu.org/licenses/>. */
24 #include "gdb_string.h"
26 #include "sol2-tdep.h"
27 #include "i386-tdep.h"
28 #include "solib-svr4.h"
30 /* From <ia32/sys/reg.h>. */
31 static int i386_sol2_gregset_reg_offset
[] =
51 /* Return whether the frame preceding NEXT_FRAME corresponds to a
52 Solaris sigtramp routine. */
55 i386_sol2_sigtramp_p (struct frame_info
*next_frame
)
57 CORE_ADDR pc
= frame_pc_unwind (next_frame
);
60 find_pc_partial_function (pc
, &name
, NULL
, NULL
);
61 return (name
&& (strcmp ("sigacthandler", name
) == 0
62 || strcmp (name
, "ucbsigvechandler") == 0));
65 /* Solaris doesn't have a `struct sigcontext', but it does have a
66 `mcontext_t' that contains the saved set of machine registers. */
69 i386_sol2_mcontext_addr (struct frame_info
*next_frame
)
71 CORE_ADDR sp
, ucontext_addr
;
73 sp
= frame_unwind_register_unsigned (next_frame
, I386_ESP_REGNUM
);
74 ucontext_addr
= get_frame_memory_unsigned (next_frame
, sp
+ 8, 4);
76 return ucontext_addr
+ 36;
82 i386_sol2_init_abi (struct gdbarch_info info
, struct gdbarch
*gdbarch
)
84 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
86 /* Solaris is SVR4-based. */
87 i386_svr4_init_abi (info
, gdbarch
);
89 /* Solaris reserves space for its FPU emulator in `fpregset_t'.
90 There is also some space reserved for the registers of a Weitek
92 tdep
->gregset_reg_offset
= i386_sol2_gregset_reg_offset
;
93 tdep
->gregset_num_regs
= ARRAY_SIZE (i386_sol2_gregset_reg_offset
);
94 tdep
->sizeof_gregset
= 19 * 4;
95 tdep
->sizeof_fpregset
= 380;
97 /* Signal trampolines are slightly different from SVR4. */
98 tdep
->sigtramp_p
= i386_sol2_sigtramp_p
;
99 tdep
->sigcontext_addr
= i386_sol2_mcontext_addr
;
100 tdep
->sc_reg_offset
= tdep
->gregset_reg_offset
;
101 tdep
->sc_num_regs
= tdep
->gregset_num_regs
;
103 /* Solaris has SVR4-style shared libraries. */
104 set_gdbarch_skip_solib_resolver (gdbarch
, sol2_skip_solib_resolver
);
105 set_solib_svr4_fetch_link_map_offsets
106 (gdbarch
, svr4_ilp32_fetch_link_map_offsets
);
110 static enum gdb_osabi
111 i386_sol2_osabi_sniffer (bfd
*abfd
)
113 /* If we have a section named .SUNW_version, then it is almost
114 certainly Solaris 2. */
115 if (bfd_get_section_by_name (abfd
, ".SUNW_version"))
116 return GDB_OSABI_SOLARIS
;
118 return GDB_OSABI_UNKNOWN
;
121 /* Provide a prototype to silence -Wmissing-prototypes. */
122 void _initialize_i386_sol2_tdep (void);
125 _initialize_i386_sol2_tdep (void)
127 /* Register an ELF OS ABI sniffer for Solaris 2 binaries. */
128 gdbarch_register_osabi_sniffer (bfd_arch_i386
, bfd_target_elf_flavour
,
129 i386_sol2_osabi_sniffer
);
131 gdbarch_register_osabi (bfd_arch_i386
, 0, GDB_OSABI_SOLARIS
,