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
|
/* Darwin support for GDB, the GNU debugger.
Copyright (C) 1997-2013 Free Software Foundation, Inc.
Contributed by Apple Computer, 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 "frame.h"
#include "inferior.h"
#include "gdbcore.h"
#include "target.h"
#include "floatformat.h"
#include "symtab.h"
#include "regcache.h"
#include "libbfd.h"
#include "objfiles.h"
#include "i387-tdep.h"
#include "amd64-tdep.h"
#include "osabi.h"
#include "ui-out.h"
#include "symtab.h"
#include "frame.h"
#include "gdb_assert.h"
#include "amd64-darwin-tdep.h"
#include "i386-darwin-tdep.h"
#include "solib.h"
#include "solib-darwin.h"
#include "dwarf2-frame.h"
/* Offsets into the struct x86_thread_state64 where we'll find the saved regs.
From <mach/i386/thread_status.h> and amd64-tdep.h. */
int amd64_darwin_thread_state_reg_offset[] =
{
0 * 8, /* %rax */
1 * 8, /* %rbx */
2 * 8, /* %rcx */
3 * 8, /* %rdx */
5 * 8, /* %rsi */
4 * 8, /* %rdi */
6 * 8, /* %rbp */
7 * 8, /* %rsp */
8 * 8, /* %r8 ... */
9 * 8,
10 * 8,
11 * 8,
12 * 8,
13 * 8,
14 * 8,
15 * 8, /* ... %r15 */
16 * 8, /* %rip */
17 * 8, /* %rflags */
18 * 8, /* %cs */
-1, /* %ss */
-1, /* %ds */
-1, /* %es */
19 * 8, /* %fs */
20 * 8 /* %gs */
};
const int amd64_darwin_thread_state_num_regs =
ARRAY_SIZE (amd64_darwin_thread_state_reg_offset);
/* Assuming THIS_FRAME is a Darwin sigtramp routine, return the
address of the associated sigcontext structure. */
static CORE_ADDR
amd64_darwin_sigcontext_addr (struct frame_info *this_frame)
{
struct gdbarch *gdbarch = get_frame_arch (this_frame);
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
CORE_ADDR rbx;
gdb_byte buf[8];
/* A pointer to the ucontext is passed as the fourth argument
to the signal handler, which is saved in rbx. */
get_frame_register (this_frame, AMD64_RBX_REGNUM, buf);
rbx = extract_unsigned_integer (buf, 8, byte_order);
/* The pointer to mcontext is at offset 48. */
read_memory (rbx + 48, buf, 8);
/* First register (rax) is at offset 16. */
return extract_unsigned_integer (buf, 8, byte_order) + 16;
}
static void
x86_darwin_init_abi_64 (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
amd64_init_abi (info, gdbarch);
tdep->struct_return = reg_struct_return;
dwarf2_frame_set_signal_frame_p (gdbarch, darwin_dwarf_signal_frame_p);
tdep->sigtramp_p = i386_sigtramp_p;
tdep->sigcontext_addr = amd64_darwin_sigcontext_addr;
tdep->sc_reg_offset = amd64_darwin_thread_state_reg_offset;
tdep->sc_num_regs = amd64_darwin_thread_state_num_regs;
tdep->jb_pc_offset = 56;
set_solib_ops (gdbarch, &darwin_so_ops);
}
/* -Wmissing-prototypes */
extern initialize_file_ftype _initialize_amd64_darwin_tdep;
void
_initialize_amd64_darwin_tdep (void)
{
gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64,
GDB_OSABI_DARWIN, x86_darwin_init_abi_64);
}
|
