Commit | Line | Data |
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68cc0bfb | 1 | /* Target-dependent code for FreeBSD/amd64. |
477f40d1 | 2 | |
af233647 | 3 | Copyright 2003, 2004 Free Software Foundation, Inc. |
68cc0bfb 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 | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | #include "defs.h" | |
23 | #include "arch-utils.h" | |
24 | #include "frame.h" | |
25 | #include "gdbcore.h" | |
26 | #include "regcache.h" | |
27 | #include "osabi.h" | |
28 | ||
29 | #include "gdb_string.h" | |
30 | ||
85be1ca6 | 31 | #include "amd64-tdep.h" |
7e654c37 | 32 | #include "solib-svr4.h" |
68cc0bfb MK |
33 | |
34 | /* Support for signal handlers. */ | |
35 | ||
36 | /* Assuming NEXT_FRAME is for a frame following a BSD sigtramp | |
37 | routine, return the address of the associated sigcontext structure. */ | |
38 | ||
39 | static CORE_ADDR | |
40 | amd64fbsd_sigcontext_addr (struct frame_info *next_frame) | |
41 | { | |
68cc0bfb MK |
42 | CORE_ADDR sp; |
43 | ||
212c460c MK |
44 | /* The `struct sigcontext' (which really is an `ucontext_t' on |
45 | FreeBSD/amd64) lives at a fixed offset in the signal frame. See | |
46 | <machine/sigframe.h>. */ | |
90f90721 | 47 | sp = frame_unwind_register_unsigned (next_frame, AMD64_RSP_REGNUM); |
212c460c | 48 | return sp + 16; |
68cc0bfb MK |
49 | } |
50 | \f | |
51 | /* FreeBSD 5.1-RELEASE or later. */ | |
52 | ||
477f40d1 MK |
53 | /* Mapping between the general-purpose registers in `struct reg' |
54 | format and GDB's register cache layout. | |
55 | ||
56 | Note that some registers are 32-bit, but since we're little-endian | |
57 | we get away with that. */ | |
58 | ||
59 | /* From <machine/reg.h>. */ | |
60 | static int amd64fbsd_r_reg_offset[] = | |
61 | { | |
af233647 MK |
62 | 14 * 8, /* %rax */ |
63 | 11 * 8, /* %rbx */ | |
64 | 13 * 8, /* %rcx */ | |
65 | 12 * 8, /* %rdx */ | |
66 | 9 * 8, /* %rsi */ | |
67 | 8 * 8, /* %rdi */ | |
68 | 10 * 8, /* %rbp */ | |
69 | 20 * 8, /* %rsp */ | |
70 | 7 * 8, /* %r8 ... */ | |
71 | 6 * 8, | |
72 | 5 * 8, | |
73 | 4 * 8, | |
74 | 3 * 8, | |
75 | 2 * 8, | |
76 | 1 * 8, | |
77 | 0 * 8, /* ... %r15 */ | |
78 | 17 * 8, /* %rip */ | |
79 | 19 * 8, /* %eflags */ | |
80 | 18 * 8, /* %cs */ | |
81 | 21 * 8, /* %ss */ | |
82 | -1, /* %ds */ | |
83 | -1, /* %es */ | |
84 | -1, /* %fs */ | |
85 | -1 /* %gs */ | |
477f40d1 MK |
86 | }; |
87 | ||
68cc0bfb | 88 | /* Location of the signal trampoline. */ |
10fc94a4 MK |
89 | CORE_ADDR amd64fbsd_sigtramp_start_addr = 0x7fffffffffc0; |
90 | CORE_ADDR amd64fbsd_sigtramp_end_addr = 0x7fffffffffe0; | |
68cc0bfb MK |
91 | |
92 | /* From <machine/signal.h>. */ | |
af233647 | 93 | int amd64fbsd_sc_reg_offset[] = |
68cc0bfb | 94 | { |
212c460c MK |
95 | 24 + 6 * 8, /* %rax */ |
96 | 24 + 7 * 8, /* %rbx */ | |
97 | 24 + 3 * 8, /* %rcx */ | |
98 | 24 + 2 * 8, /* %rdx */ | |
99 | 24 + 1 * 8, /* %rsi */ | |
100 | 24 + 0 * 8, /* %rdi */ | |
101 | 24 + 8 * 8, /* %rbp */ | |
dac94105 | 102 | 24 + 22 * 8, /* %rsp */ |
af233647 MK |
103 | 24 + 4 * 8, /* %r8 ... */ |
104 | 24 + 5 * 8, | |
105 | 24 + 9 * 8, | |
106 | 24 + 10 * 8, | |
107 | 24 + 11 * 8, | |
108 | 24 + 12 * 8, | |
109 | 24 + 13 * 8, | |
110 | 24 + 14 * 8, /* ... %r15 */ | |
dac94105 MK |
111 | 24 + 19 * 8, /* %rip */ |
112 | 24 + 21 * 8, /* %eflags */ | |
af233647 MK |
113 | 24 + 20 * 8, /* %cs */ |
114 | 24 + 23 * 8, /* %ss */ | |
68cc0bfb MK |
115 | -1, /* %ds */ |
116 | -1, /* %es */ | |
117 | -1, /* %fs */ | |
118 | -1 /* %gs */ | |
119 | }; | |
120 | ||
121 | void | |
122 | amd64fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | |
123 | { | |
124 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
125 | ||
126 | /* Obviously FreeBSD is BSD-based. */ | |
127 | i386bsd_init_abi (info, gdbarch); | |
128 | ||
477f40d1 MK |
129 | tdep->gregset_reg_offset = amd64fbsd_r_reg_offset; |
130 | tdep->gregset_num_regs = ARRAY_SIZE (amd64fbsd_r_reg_offset); | |
131 | tdep->sizeof_gregset = 22 * 8; | |
132 | ||
90f90721 | 133 | amd64_init_abi (info, gdbarch); |
68cc0bfb | 134 | |
10fc94a4 MK |
135 | tdep->sigtramp_start = amd64fbsd_sigtramp_start_addr; |
136 | tdep->sigtramp_end = amd64fbsd_sigtramp_end_addr; | |
68cc0bfb MK |
137 | tdep->sigcontext_addr = amd64fbsd_sigcontext_addr; |
138 | tdep->sc_reg_offset = amd64fbsd_sc_reg_offset; | |
477f40d1 | 139 | tdep->sc_num_regs = ARRAY_SIZE (amd64fbsd_sc_reg_offset); |
7e654c37 MK |
140 | |
141 | /* FreeBSD uses SVR4-style shared libraries. */ | |
142 | set_solib_svr4_fetch_link_map_offsets | |
143 | (gdbarch, svr4_lp64_fetch_link_map_offsets); | |
68cc0bfb MK |
144 | } |
145 | \f | |
146 | ||
147 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
148 | void _initialize_amd64fbsd_tdep (void); | |
149 | ||
150 | void | |
151 | _initialize_amd64fbsd_tdep (void) | |
152 | { | |
153 | gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64, | |
154 | GDB_OSABI_FREEBSD_ELF, amd64fbsd_init_abi); | |
155 | } |