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"
27 #include "solib-svr4.h"
29 /* From <ia32/sys/reg.h>. */
30 static int i386_sol2_gregset_reg_offset
[] =
51 i386_sol2_sigtramp_p (struct frame_info
*next_frame
)
53 CORE_ADDR pc
= frame_pc_unwind (next_frame
);
55 /* Signal handler frames under Solaris 2 are recognized by a return
56 address of 0xffffffff. */
57 return (pc
== 0xffffffff);
60 /* Solaris doesn't have a `struct sigcontext', but it does have a
61 `mcontext_t' that contains the saved set of machine registers. */
64 i386_sol2_mcontext_addr (struct frame_info
*next_frame
)
66 CORE_ADDR sp
, ucontext_addr
;
68 sp
= frame_unwind_register_unsigned (next_frame
, I386_ESP_REGNUM
);
69 ucontext_addr
= get_frame_memory_unsigned (next_frame
, sp
+ 8, 4);
71 return ucontext_addr
+ 36;
77 i386_sol2_init_abi (struct gdbarch_info info
, struct gdbarch
*gdbarch
)
79 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
81 /* Solaris is SVR4-based. */
82 i386_svr4_init_abi (info
, gdbarch
);
84 /* Solaris reserves space for its FPU emulator in `fpregset_t'.
85 There is also some space reserved for the registers of a Weitek
87 tdep
->gregset_reg_offset
= i386_sol2_gregset_reg_offset
;
88 tdep
->gregset_num_regs
= ARRAY_SIZE (i386_sol2_gregset_reg_offset
);
89 tdep
->sizeof_gregset
= 19 * 4;
90 tdep
->sizeof_fpregset
= 380;
92 /* Signal trampolines are slightly different from SVR4. */
93 tdep
->sigtramp_p
= i386_sol2_sigtramp_p
;
94 tdep
->sigcontext_addr
= i386_sol2_mcontext_addr
;
95 tdep
->sc_reg_offset
= tdep
->gregset_reg_offset
;
96 tdep
->sc_num_regs
= tdep
->gregset_num_regs
;
98 set_solib_svr4_fetch_link_map_offsets
99 (gdbarch
, svr4_ilp32_fetch_link_map_offsets
);
103 static enum gdb_osabi
104 i386_sol2_osabi_sniffer (bfd
*abfd
)
106 /* If we have a section named .SUNW_version, then it is almost
107 certainly Solaris 2. */
108 if (bfd_get_section_by_name (abfd
, ".SUNW_version"))
109 return GDB_OSABI_SOLARIS
;
111 return GDB_OSABI_UNKNOWN
;
114 /* Provide a prototype to silence -Wmissing-prototypes. */
115 void _initialize_i386_sol2_tdep (void);
118 _initialize_i386_sol2_tdep (void)
120 /* Register an ELF OS ABI sniffer for Solaris 2 binaries. */
121 gdbarch_register_osabi_sniffer (bfd_arch_i386
, bfd_target_elf_flavour
,
122 i386_sol2_osabi_sniffer
);
124 gdbarch_register_osabi (bfd_arch_i386
, 0, GDB_OSABI_SOLARIS
,