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68cc0bfb MK |
1 | /* Target-dependent code for FreeBSD/amd64. |
2 | Copyright 2003 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GDB. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include "defs.h" | |
22 | #include "arch-utils.h" | |
23 | #include "frame.h" | |
24 | #include "gdbcore.h" | |
25 | #include "regcache.h" | |
26 | #include "osabi.h" | |
27 | ||
28 | #include "gdb_string.h" | |
29 | ||
30 | #include "x86-64-tdep.h" | |
31 | ||
32 | /* Support for signal handlers. */ | |
33 | ||
34 | /* Assuming NEXT_FRAME is for a frame following a BSD sigtramp | |
35 | routine, return the address of the associated sigcontext structure. */ | |
36 | ||
37 | static CORE_ADDR | |
38 | amd64fbsd_sigcontext_addr (struct frame_info *next_frame) | |
39 | { | |
68cc0bfb MK |
40 | CORE_ADDR sp; |
41 | ||
212c460c MK |
42 | /* The `struct sigcontext' (which really is an `ucontext_t' on |
43 | FreeBSD/amd64) lives at a fixed offset in the signal frame. See | |
44 | <machine/sigframe.h>. */ | |
45 | sp = frame_unwind_register_unsigned (next_frame, X86_64_RSP_REGNUM); | |
46 | return sp + 16; | |
68cc0bfb MK |
47 | } |
48 | \f | |
49 | /* FreeBSD 5.1-RELEASE or later. */ | |
50 | ||
51 | /* Location of the signal trampoline. */ | |
212c460c MK |
52 | CORE_ADDR amd64fbsd_sigtramp_start = 0x7fffffffffc0; |
53 | CORE_ADDR amd64fbsd_sigtramp_end = 0x7fffffffffe0; | |
68cc0bfb MK |
54 | |
55 | /* From <machine/signal.h>. */ | |
56 | int amd64fbsd_sc_reg_offset[X86_64_NUM_GREGS] = | |
57 | { | |
212c460c MK |
58 | 24 + 6 * 8, /* %rax */ |
59 | 24 + 7 * 8, /* %rbx */ | |
60 | 24 + 3 * 8, /* %rcx */ | |
61 | 24 + 2 * 8, /* %rdx */ | |
62 | 24 + 1 * 8, /* %rsi */ | |
63 | 24 + 0 * 8, /* %rdi */ | |
64 | 24 + 8 * 8, /* %rbp */ | |
65 | 24 + 21 * 8, /* %rsp */ | |
66 | 24 + 4 * 8, /* %r8 */ | |
67 | 24 + 5 * 8, /* %r9 */ | |
68 | 24 + 9 * 8, /* %r10 */ | |
69 | 24 + 10 * 8, /* %r11 */ | |
70 | 24 + 11 * 8, /* %r12 */ | |
71 | 24 + 12 * 8, /* %r13 */ | |
72 | 24 + 13 * 8, /* %r14 */ | |
73 | 24 + 14 * 8, /* %r15 */ | |
74 | 24 + 18 * 8, /* %rip */ | |
75 | 24 + 20 * 8, /* %eflags */ | |
68cc0bfb MK |
76 | -1, /* %ds */ |
77 | -1, /* %es */ | |
78 | -1, /* %fs */ | |
79 | -1 /* %gs */ | |
80 | }; | |
81 | ||
82 | void | |
83 | amd64fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | |
84 | { | |
85 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
86 | ||
87 | /* Obviously FreeBSD is BSD-based. */ | |
88 | i386bsd_init_abi (info, gdbarch); | |
89 | ||
90 | x86_64_init_abi (info, gdbarch); | |
91 | ||
92 | tdep->sigtramp_start = amd64fbsd_sigtramp_start; | |
212c460c | 93 | tdep->sigtramp_end = amd64fbsd_sigtramp_end; |
68cc0bfb MK |
94 | tdep->sigcontext_addr = amd64fbsd_sigcontext_addr; |
95 | tdep->sc_reg_offset = amd64fbsd_sc_reg_offset; | |
96 | tdep->sc_num_regs = X86_64_NUM_GREGS; | |
97 | } | |
98 | \f | |
99 | ||
100 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
101 | void _initialize_amd64fbsd_tdep (void); | |
102 | ||
103 | void | |
104 | _initialize_amd64fbsd_tdep (void) | |
105 | { | |
106 | gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64, | |
107 | GDB_OSABI_FREEBSD_ELF, amd64fbsd_init_abi); | |
108 | } |