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
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
/* Target-dependent code for Solaris x86.
Copyright (C) 2002-2019 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 3 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, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "value.h"
#include "osabi.h"
#include "sol2-tdep.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 THIS_FRAME corresponds to a Solaris sigtramp
routine. */
static int
i386_sol2_sigtramp_p (struct frame_info *this_frame)
{
CORE_ADDR pc = get_frame_pc (this_frame);
const char *name;
find_pc_partial_function (pc, &name, NULL, NULL);
return (name && (strcmp ("sigacthandler", name) == 0
|| strcmp (name, "ucbsigvechandler") == 0
|| strcmp (name, "__sighndlr") == 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 *this_frame)
{
CORE_ADDR sp, ucontext_addr;
sp = get_frame_register_unsigned (this_frame, I386_ESP_REGNUM);
ucontext_addr = get_frame_memory_unsigned (this_frame, sp + 8, 4);
return ucontext_addr + 36;
}
/* SunPRO encodes the static variables. This is not related to C++
mangling, it is done for C too. */
static const char *
i386_sol2_static_transform_name (const char *name)
{
if (name[0] == '.')
{
const char *p;
/* For file-local statics there will be a period, a bunch of
junk (the contents of which match a string given in the
N_OPT), a period and the name. For function-local statics
there will be a bunch of junk (which seems to change the
second character from 'A' to 'B'), a period, the name of the
function, and the name. So just skip everything before the
last period. */
p = strrchr (name, '.');
if (p != NULL)
name = p + 1;
}
return name;
}
/* 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);
/* The SunPRO compiler puts out 0 instead of the address in N_SO symbols,
and for SunPRO 3.0, N_FUN symbols too. */
set_gdbarch_sofun_address_maybe_missing (gdbarch, 1);
/* Handle SunPRO encoding of static symbols. */
set_gdbarch_static_transform_name (gdbarch, i386_sol2_static_transform_name);
/* 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;
/* Solaris has SVR4-style shared libraries. */
set_gdbarch_skip_solib_resolver (gdbarch, sol2_skip_solib_resolver);
set_solib_svr4_fetch_link_map_offsets
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
/* How to print LWP PTIDs from core files. */
set_gdbarch_core_pid_to_str (gdbarch, sol2_core_pid_to_str);
}
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;
}
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);
}
|
GitWeb