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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 | |
9 | the Free Software Foundation; either version 2 of the License, or | |
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 | |
18 | along with this program; if not, write to the Free Software | |
197e01b6 EZ |
19 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
8201327c MK |
21 | |
22 | #include "defs.h" | |
52e9098c | 23 | #include "value.h" |
4be87837 | 24 | #include "osabi.h" |
8201327c | 25 | |
d9f8c85b MK |
26 | #include "gdb_string.h" |
27 | ||
081bf9da | 28 | #include "sol2-tdep.h" |
8201327c | 29 | #include "i386-tdep.h" |
75f501b5 | 30 | #include "solib-svr4.h" |
8201327c | 31 | |
6a9756ed MK |
32 | /* From <ia32/sys/reg.h>. */ |
33 | static int i386_sol2_gregset_reg_offset[] = | |
34 | { | |
35 | 11 * 4, /* %eax */ | |
36 | 10 * 4, /* %ecx */ | |
37 | 9 * 4, /* %edx */ | |
38 | 8 * 4, /* %ebx */ | |
39 | 17 * 4, /* %esp */ | |
40 | 6 * 4, /* %ebp */ | |
41 | 5 * 4, /* %esi */ | |
42 | 4 * 4, /* %edi */ | |
43 | 14 * 4, /* %eip */ | |
44 | 16 * 4, /* %eflags */ | |
45 | 15 * 4, /* %cs */ | |
46 | 18 * 4, /* %ss */ | |
47 | 3 * 4, /* %ds */ | |
48 | 2 * 4, /* %es */ | |
49 | 1 * 4, /* %fs */ | |
50 | 0 * 4 /* %gs */ | |
51 | }; | |
52 | ||
d9f8c85b MK |
53 | /* Return whether the frame preceding NEXT_FRAME corresponds to a |
54 | Solaris sigtramp routine. */ | |
55 | ||
8201327c | 56 | static int |
911bc6ee | 57 | i386_sol2_sigtramp_p (struct frame_info *next_frame) |
8201327c | 58 | { |
911bc6ee | 59 | CORE_ADDR pc = frame_pc_unwind (next_frame); |
d9f8c85b | 60 | char *name; |
911bc6ee | 61 | |
d9f8c85b MK |
62 | find_pc_partial_function (pc, &name, NULL, NULL); |
63 | return (name && (strcmp ("sigacthandler", name) == 0 | |
64 | || strcmp (name, "ucbsigvechandler") == 0)); | |
8201327c MK |
65 | } |
66 | ||
8349554d MK |
67 | /* Solaris doesn't have a `struct sigcontext', but it does have a |
68 | `mcontext_t' that contains the saved set of machine registers. */ | |
69 | ||
70 | static CORE_ADDR | |
71 | i386_sol2_mcontext_addr (struct frame_info *next_frame) | |
72 | { | |
73 | CORE_ADDR sp, ucontext_addr; | |
74 | ||
75 | sp = frame_unwind_register_unsigned (next_frame, I386_ESP_REGNUM); | |
76 | ucontext_addr = get_frame_memory_unsigned (next_frame, sp + 8, 4); | |
77 | ||
78 | return ucontext_addr + 36; | |
79 | } | |
80 | ||
8201327c MK |
81 | /* Solaris 2. */ |
82 | ||
83 | static void | |
84 | i386_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | |
85 | { | |
86 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
87 | ||
88 | /* Solaris is SVR4-based. */ | |
89 | i386_svr4_init_abi (info, gdbarch); | |
90 | ||
6a9756ed MK |
91 | /* Solaris reserves space for its FPU emulator in `fpregset_t'. |
92 | There is also some space reserved for the registers of a Weitek | |
93 | math coprocessor. */ | |
94 | tdep->gregset_reg_offset = i386_sol2_gregset_reg_offset; | |
95 | tdep->gregset_num_regs = ARRAY_SIZE (i386_sol2_gregset_reg_offset); | |
96 | tdep->sizeof_gregset = 19 * 4; | |
97 | tdep->sizeof_fpregset = 380; | |
98 | ||
911bc6ee MK |
99 | /* Signal trampolines are slightly different from SVR4. */ |
100 | tdep->sigtramp_p = i386_sol2_sigtramp_p; | |
8349554d MK |
101 | tdep->sigcontext_addr = i386_sol2_mcontext_addr; |
102 | tdep->sc_reg_offset = tdep->gregset_reg_offset; | |
103 | tdep->sc_num_regs = tdep->gregset_num_regs; | |
75f501b5 | 104 | |
081bf9da MK |
105 | /* Solaris has SVR4-style shared libraries. */ |
106 | set_gdbarch_skip_solib_resolver (gdbarch, sol2_skip_solib_resolver); | |
75f501b5 MK |
107 | set_solib_svr4_fetch_link_map_offsets |
108 | (gdbarch, svr4_ilp32_fetch_link_map_offsets); | |
8201327c MK |
109 | } |
110 | \f | |
111 | ||
6e157172 MK |
112 | static enum gdb_osabi |
113 | i386_sol2_osabi_sniffer (bfd *abfd) | |
114 | { | |
115 | /* If we have a section named .SUNW_version, then it is almost | |
116 | certainly Solaris 2. */ | |
117 | if (bfd_get_section_by_name (abfd, ".SUNW_version")) | |
118 | return GDB_OSABI_SOLARIS; | |
119 | ||
120 | return GDB_OSABI_UNKNOWN; | |
121 | } | |
122 | ||
8201327c MK |
123 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
124 | void _initialize_i386_sol2_tdep (void); | |
125 | ||
126 | void | |
127 | _initialize_i386_sol2_tdep (void) | |
128 | { | |
0c52bd59 | 129 | /* Register an ELF OS ABI sniffer for Solaris 2 binaries. */ |
6e157172 MK |
130 | gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_elf_flavour, |
131 | i386_sol2_osabi_sniffer); | |
132 | ||
05816f70 | 133 | gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_SOLARIS, |
8201327c MK |
134 | i386_sol2_init_abi); |
135 | } |