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fbsd-i386-low.c (157572) fbsd-i386-low.c (157574)
1/* GNU/Linux/i386 specific low level interface, for the remote server for GDB.
2 Copyright 1995, 1996, 1998, 1999, 2000, 2001, 2002
3 Free Software Foundation, Inc.
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

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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
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
21
1/* GNU/Linux/i386 specific low level interface, for the remote server for GDB.
2 Copyright 1995, 1996, 1998, 1999, 2000, 2001, 2002
3 Free Software Foundation, Inc.
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

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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
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
21
22#include <sys/cdefs.h>
23__FBSDID("$FreeBSD: head/gnu/usr.bin/gdb/gdbserver/fbsd-i386-low.c 157574 2006-04-06 22:24:01Z jmg $");
24
22#include "server.h"
25#include "server.h"
23#include "linux-low.h"
26#include "fbsd-low.h"
24#include "i387-fp.h"
25
26#ifdef HAVE_SYS_REG_H
27#include <sys/reg.h>
27#include "i387-fp.h"
28
29#ifdef HAVE_SYS_REG_H
30#include <sys/reg.h>
31#else
32#include <machine/reg.h>
28#endif
29
30/* This module only supports access to the general purpose registers. */
31
32#define i386_num_regs 16
33
33#endif
34
35/* This module only supports access to the general purpose registers. */
36
37#define i386_num_regs 16
38
34/* This stuff comes from i386-linux-nat.c. */
39/* This stuff comes from i386-fbsd-nat.c. */
35
36/* Mapping between the general-purpose registers in `struct user'
37 format and GDB's register array layout. */
38static int i386_regmap[] =
39{
40
41/* Mapping between the general-purpose registers in `struct user'
42 format and GDB's register array layout. */
43static int i386_regmap[] =
44{
40 EAX * 4, ECX * 4, EDX * 4, EBX * 4,
41 UESP * 4, EBP * 4, ESI * 4, EDI * 4,
42 EIP * 4, EFL * 4, CS * 4, SS * 4,
43 DS * 4, ES * 4, FS * 4, GS * 4
45 tEAX * 4, tECX * 4, tEDX * 4, tEBX * 4,
46 tESP * 4, tEBP * 4, tESI * 4, tEDI * 4,
47 tEIP * 4, tEFLAGS * 4, tCS * 4, tSS * 4,
48 tDS * 4, tES * 4, tFS * 4, tGS * 4
44};
45
46static int
47i386_cannot_store_register (int regno)
48{
49 return (regno >= i386_num_regs);
50}
51
52static int
53i386_cannot_fetch_register (int regno)
54{
55 return (regno >= i386_num_regs);
56}
57
58
49};
50
51static int
52i386_cannot_store_register (int regno)
53{
54 return (regno >= i386_num_regs);
55}
56
57static int
58i386_cannot_fetch_register (int regno)
59{
60 return (regno >= i386_num_regs);
61}
62
63
59#ifdef HAVE_LINUX_REGSETS
60#include <sys/procfs.h>
61#include <sys/ptrace.h>
62
63static void
64i386_fill_gregset (void *buf)
65{
66 int i;
67
68 for (i = 0; i < i386_num_regs; i++)
69 collect_register (i, ((char *) buf) + i386_regmap[i]);
70
64#include <sys/procfs.h>
65#include <sys/ptrace.h>
66
67static void
68i386_fill_gregset (void *buf)
69{
70 int i;
71
72 for (i = 0; i < i386_num_regs; i++)
73 collect_register (i, ((char *) buf) + i386_regmap[i]);
74
71 collect_register_by_name ("orig_eax", ((char *) buf) + ORIG_EAX * 4);
72}
73
74static void
75i386_store_gregset (const void *buf)
76{
77 int i;
78
79 for (i = 0; i < i386_num_regs; i++)
80 supply_register (i, ((char *) buf) + i386_regmap[i]);
81
75}
76
77static void
78i386_store_gregset (const void *buf)
79{
80 int i;
81
82 for (i = 0; i < i386_num_regs; i++)
83 supply_register (i, ((char *) buf) + i386_regmap[i]);
84
82 supply_register_by_name ("orig_eax", ((char *) buf) + ORIG_EAX * 4);
83}
84
85static void
86i386_fill_fpregset (void *buf)
87{
88 i387_cache_to_fsave (buf);
89}
90

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103static void
104i386_store_fpxregset (const void *buf)
105{
106 i387_fxsave_to_cache (buf);
107}
108
109
110struct regset_info target_regsets[] = {
85}
86
87static void
88i386_fill_fpregset (void *buf)
89{
90 i387_cache_to_fsave (buf);
91}
92

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105static void
106i386_store_fpxregset (const void *buf)
107{
108 i387_fxsave_to_cache (buf);
109}
110
111
112struct regset_info target_regsets[] = {
111 { PTRACE_GETREGS, PTRACE_SETREGS, sizeof (elf_gregset_t),
113 { PT_GETREGS, PT_SETREGS, sizeof (struct reg),
112 GENERAL_REGS,
113 i386_fill_gregset, i386_store_gregset },
114#ifdef HAVE_PTRACE_GETFPXREGS
115 { PTRACE_GETFPXREGS, PTRACE_SETFPXREGS, sizeof (elf_fpxregset_t),
116 EXTENDED_REGS,
117 i386_fill_fpxregset, i386_store_fpxregset },
118#endif
114 GENERAL_REGS,
115 i386_fill_gregset, i386_store_gregset },
116#ifdef HAVE_PTRACE_GETFPXREGS
117 { PTRACE_GETFPXREGS, PTRACE_SETFPXREGS, sizeof (elf_fpxregset_t),
118 EXTENDED_REGS,
119 i386_fill_fpxregset, i386_store_fpxregset },
120#endif
119 { PTRACE_GETFPREGS, PTRACE_SETFPREGS, sizeof (elf_fpregset_t),
121 { PT_GETFPREGS, PT_SETFPREGS, sizeof (struct fpreg),
120 FP_REGS,
121 i386_fill_fpregset, i386_store_fpregset },
122 { 0, 0, -1, -1, NULL, NULL }
123};
124
122 FP_REGS,
123 i386_fill_fpregset, i386_store_fpregset },
124 { 0, 0, -1, -1, NULL, NULL }
125};
126
125#endif /* HAVE_LINUX_REGSETS */
126
127static const char i386_breakpoint[] = { 0xCC };
128#define i386_breakpoint_len 1
129
130extern int debug_threads;
131
132static CORE_ADDR
133i386_get_pc ()
134{

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156
157 read_inferior_memory (pc, &c, 1);
158 if (c == 0xCC)
159 return 1;
160
161 return 0;
162}
163
127static const char i386_breakpoint[] = { 0xCC };
128#define i386_breakpoint_len 1
129
130extern int debug_threads;
131
132static CORE_ADDR
133i386_get_pc ()
134{

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156
157 read_inferior_memory (pc, &c, 1);
158 if (c == 0xCC)
159 return 1;
160
161 return 0;
162}
163
164struct linux_target_ops the_low_target = {
164struct fbsd_target_ops the_low_target = {
165 i386_num_regs,
166 i386_regmap,
167 i386_cannot_fetch_register,
168 i386_cannot_store_register,
169 i386_get_pc,
170 i386_set_pc,
171 i386_breakpoint,
172 i386_breakpoint_len,
173 NULL,
174 1,
175 i386_breakpoint_at,
176};
165 i386_num_regs,
166 i386_regmap,
167 i386_cannot_fetch_register,
168 i386_cannot_store_register,
169 i386_get_pc,
170 i386_set_pc,
171 i386_breakpoint,
172 i386_breakpoint_len,
173 NULL,
174 1,
175 i386_breakpoint_at,
176};