1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
/* Target-dependent code for Solaris x86.
Copyright 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "value.h"
#include "osabi.h"
#include "gdb_string.h"
#include "i386-tdep.h"
#include "solib-svr4.h"
/* From <ia32/sys/reg.h>. */
static int i386_sol2_gregset_reg_offset[] =
{
11 * 4, /* %eax */
10 * 4, /* %ecx */
9 * 4, /* %edx */
8 * 4, /* %ebx */
17 * 4, /* %esp */
6 * 4, /* %ebp */
5 * 4, /* %esi */
4 * 4, /* %edi */
14 * 4, /* %eip */
16 * 4, /* %eflags */
15 * 4, /* %cs */
18 * 4, /* %ss */
3 * 4, /* %ds */
2 * 4, /* %es */
1 * 4, /* %fs */
0 * 4 /* %gs */
};
/* Return whether the frame preceding NEXT_FRAME corresponds to a
Solaris sigtramp routine. */
static int
i386_sol2_sigtramp_p (struct frame_info *next_frame)
{
CORE_ADDR pc = frame_pc_unwind (next_frame);
char *name;
find_pc_partial_function (pc, &name, NULL, NULL);
return (name && (strcmp ("sigacthandler", name) == 0
|| strcmp (name, "ucbsigvechandler") == 0));
}
/* Solaris doesn't have a `struct sigcontext', but it does have a
`mcontext_t' that contains the saved set of machine registers. */
static CORE_ADDR
i386_sol2_mcontext_addr (struct frame_info *next_frame)
{
CORE_ADDR sp, ucontext_addr;
sp = frame_unwind_register_unsigned (next_frame, I386_ESP_REGNUM);
ucontext_addr = get_frame_memory_unsigned (next_frame, sp + 8, 4);
return ucontext_addr + 36;
}
/* Solaris 2. */
static void
i386_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
/* Solaris is SVR4-based. */
i386_svr4_init_abi (info, gdbarch);
/* Solaris reserves space for its FPU emulator in `fpregset_t'.
There is also some space reserved for the registers of a Weitek
math coprocessor. */
tdep->gregset_reg_offset = i386_sol2_gregset_reg_offset;
tdep->gregset_num_regs = ARRAY_SIZE (i386_sol2_gregset_reg_offset);
tdep->sizeof_gregset = 19 * 4;
tdep->sizeof_fpregset = 380;
/* Signal trampolines are slightly different from SVR4. */
tdep->sigtramp_p = i386_sol2_sigtramp_p;
tdep->sigcontext_addr = i386_sol2_mcontext_addr;
tdep->sc_reg_offset = tdep->gregset_reg_offset;
tdep->sc_num_regs = tdep->gregset_num_regs;
set_solib_svr4_fetch_link_map_offsets
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
}
static enum gdb_osabi
i386_sol2_osabi_sniffer (bfd *abfd)
{
/* If we have a section named .SUNW_version, then it is almost
certainly Solaris 2. */
if (bfd_get_section_by_name (abfd, ".SUNW_version"))
return GDB_OSABI_SOLARIS;
return GDB_OSABI_UNKNOWN;
}
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_i386_sol2_tdep (void);
void
_initialize_i386_sol2_tdep (void)
{
/* Register an ELF OS ABI sniffer for Solaris 2 binaries. */
gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_elf_flavour,
i386_sol2_osabi_sniffer);
gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_SOLARIS,
i386_sol2_init_abi);
}
|
