Commit | Line | Data |
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8201327c | 1 | /* Target-dependent code for Solaris x86. |
911bc6ee | 2 | |
6aba47ca | 3 | Copyright (C) 2002, 2003, 2004, 2006, 2007 Free Software Foundation, Inc. |
8201327c MK |
4 | |
5 | This file is part of GDB. | |
6 | ||
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 | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
8201327c MK |
10 | (at your option) any later version. |
11 | ||
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. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
8201327c MK |
19 | |
20 | #include "defs.h" | |
52e9098c | 21 | #include "value.h" |
4be87837 | 22 | #include "osabi.h" |
8201327c | 23 | |
d9f8c85b MK |
24 | #include "gdb_string.h" |
25 | ||
081bf9da | 26 | #include "sol2-tdep.h" |
8201327c | 27 | #include "i386-tdep.h" |
75f501b5 | 28 | #include "solib-svr4.h" |
8201327c | 29 | |
6a9756ed MK |
30 | /* From <ia32/sys/reg.h>. */ |
31 | static int i386_sol2_gregset_reg_offset[] = | |
32 | { | |
33 | 11 * 4, /* %eax */ | |
34 | 10 * 4, /* %ecx */ | |
35 | 9 * 4, /* %edx */ | |
36 | 8 * 4, /* %ebx */ | |
37 | 17 * 4, /* %esp */ | |
38 | 6 * 4, /* %ebp */ | |
39 | 5 * 4, /* %esi */ | |
40 | 4 * 4, /* %edi */ | |
41 | 14 * 4, /* %eip */ | |
42 | 16 * 4, /* %eflags */ | |
43 | 15 * 4, /* %cs */ | |
44 | 18 * 4, /* %ss */ | |
45 | 3 * 4, /* %ds */ | |
46 | 2 * 4, /* %es */ | |
47 | 1 * 4, /* %fs */ | |
48 | 0 * 4 /* %gs */ | |
49 | }; | |
50 | ||
d9f8c85b MK |
51 | /* Return whether the frame preceding NEXT_FRAME corresponds to a |
52 | Solaris sigtramp routine. */ | |
53 | ||
8201327c | 54 | static int |
911bc6ee | 55 | i386_sol2_sigtramp_p (struct frame_info *next_frame) |
8201327c | 56 | { |
911bc6ee | 57 | CORE_ADDR pc = frame_pc_unwind (next_frame); |
d9f8c85b | 58 | char *name; |
911bc6ee | 59 | |
d9f8c85b MK |
60 | find_pc_partial_function (pc, &name, NULL, NULL); |
61 | return (name && (strcmp ("sigacthandler", name) == 0 | |
62 | || strcmp (name, "ucbsigvechandler") == 0)); | |
8201327c MK |
63 | } |
64 | ||
8349554d MK |
65 | /* Solaris doesn't have a `struct sigcontext', but it does have a |
66 | `mcontext_t' that contains the saved set of machine registers. */ | |
67 | ||
68 | static CORE_ADDR | |
69 | i386_sol2_mcontext_addr (struct frame_info *next_frame) | |
70 | { | |
71 | CORE_ADDR sp, ucontext_addr; | |
72 | ||
73 | sp = frame_unwind_register_unsigned (next_frame, I386_ESP_REGNUM); | |
74 | ucontext_addr = get_frame_memory_unsigned (next_frame, sp + 8, 4); | |
75 | ||
76 | return ucontext_addr + 36; | |
77 | } | |
78 | ||
8201327c MK |
79 | /* Solaris 2. */ |
80 | ||
81 | static void | |
82 | i386_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | |
83 | { | |
84 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
85 | ||
86 | /* Solaris is SVR4-based. */ | |
87 | i386_svr4_init_abi (info, gdbarch); | |
88 | ||
6a9756ed MK |
89 | /* Solaris reserves space for its FPU emulator in `fpregset_t'. |
90 | There is also some space reserved for the registers of a Weitek | |
91 | math coprocessor. */ | |
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; | |
96 | ||
911bc6ee MK |
97 | /* Signal trampolines are slightly different from SVR4. */ |
98 | tdep->sigtramp_p = i386_sol2_sigtramp_p; | |
8349554d MK |
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; | |
75f501b5 | 102 | |
081bf9da MK |
103 | /* Solaris has SVR4-style shared libraries. */ |
104 | set_gdbarch_skip_solib_resolver (gdbarch, sol2_skip_solib_resolver); | |
75f501b5 MK |
105 | set_solib_svr4_fetch_link_map_offsets |
106 | (gdbarch, svr4_ilp32_fetch_link_map_offsets); | |
8201327c MK |
107 | } |
108 | \f | |
109 | ||
6e157172 MK |
110 | static enum gdb_osabi |
111 | i386_sol2_osabi_sniffer (bfd *abfd) | |
112 | { | |
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; | |
117 | ||
118 | return GDB_OSABI_UNKNOWN; | |
119 | } | |
120 | ||
8201327c MK |
121 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
122 | void _initialize_i386_sol2_tdep (void); | |
123 | ||
124 | void | |
125 | _initialize_i386_sol2_tdep (void) | |
126 | { | |
0c52bd59 | 127 | /* Register an ELF OS ABI sniffer for Solaris 2 binaries. */ |
6e157172 MK |
128 | gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_elf_flavour, |
129 | i386_sol2_osabi_sniffer); | |
130 | ||
05816f70 | 131 | gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_SOLARIS, |
8201327c MK |
132 | i386_sol2_init_abi); |
133 | } |