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 "gdb_string.h"
28 #include "i386-tdep.h"
29 #include "solib-svr4.h"
31 /* From <ia32/sys/reg.h>. */
32 static int i386_sol2_gregset_reg_offset
[] =
52 /* Return whether the frame preceding NEXT_FRAME corresponds to a
53 Solaris sigtramp routine. */
56 i386_sol2_sigtramp_p (struct frame_info
*next_frame
)
58 CORE_ADDR pc
= frame_pc_unwind (next_frame
);
61 find_pc_partial_function (pc
, &name
, NULL
, NULL
);
62 return (name
&& (strcmp ("sigacthandler", name
) == 0
63 || strcmp (name
, "ucbsigvechandler") == 0));
66 /* Solaris doesn't have a `struct sigcontext', but it does have a
67 `mcontext_t' that contains the saved set of machine registers. */
70 i386_sol2_mcontext_addr (struct frame_info
*next_frame
)
72 CORE_ADDR sp
, ucontext_addr
;
74 sp
= frame_unwind_register_unsigned (next_frame
, I386_ESP_REGNUM
);
75 ucontext_addr
= get_frame_memory_unsigned (next_frame
, sp
+ 8, 4);
77 return ucontext_addr
+ 36;
83 i386_sol2_init_abi (struct gdbarch_info info
, struct gdbarch
*gdbarch
)
85 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
87 /* Solaris is SVR4-based. */
88 i386_svr4_init_abi (info
, gdbarch
);
90 /* Solaris reserves space for its FPU emulator in `fpregset_t'.
91 There is also some space reserved for the registers of a Weitek
93 tdep
->gregset_reg_offset
= i386_sol2_gregset_reg_offset
;
94 tdep
->gregset_num_regs
= ARRAY_SIZE (i386_sol2_gregset_reg_offset
);
95 tdep
->sizeof_gregset
= 19 * 4;
96 tdep
->sizeof_fpregset
= 380;
98 /* Signal trampolines are slightly different from SVR4. */
99 tdep
->sigtramp_p
= i386_sol2_sigtramp_p
;
100 tdep
->sigcontext_addr
= i386_sol2_mcontext_addr
;
101 tdep
->sc_reg_offset
= tdep
->gregset_reg_offset
;
102 tdep
->sc_num_regs
= tdep
->gregset_num_regs
;
104 set_solib_svr4_fetch_link_map_offsets
105 (gdbarch
, svr4_ilp32_fetch_link_map_offsets
);
109 static enum gdb_osabi
110 i386_sol2_osabi_sniffer (bfd
*abfd
)
112 /* If we have a section named .SUNW_version, then it is almost
113 certainly Solaris 2. */
114 if (bfd_get_section_by_name (abfd
, ".SUNW_version"))
115 return GDB_OSABI_SOLARIS
;
117 return GDB_OSABI_UNKNOWN
;
120 /* Provide a prototype to silence -Wmissing-prototypes. */
121 void _initialize_i386_sol2_tdep (void);
124 _initialize_i386_sol2_tdep (void)
126 /* Register an ELF OS ABI sniffer for Solaris 2 binaries. */
127 gdbarch_register_osabi_sniffer (bfd_arch_i386
, bfd_target_elf_flavour
,
128 i386_sol2_osabi_sniffer
);
130 gdbarch_register_osabi (bfd_arch_i386
, 0, GDB_OSABI_SOLARIS
,