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0bbc026e JM |
1 | /* Target-dependent code for AMD64 Solaris. |
2 | ||
3 | Copyright 2001, 2002, 2003, 2004 Free Software Foundation, Inc. | |
4 | Contributed by Joseph Myers, CodeSourcery, LLC. | |
5 | ||
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
22 | ||
23 | #include "defs.h" | |
24 | #include "frame.h" | |
25 | #include "gdbcore.h" | |
26 | #include "regcache.h" | |
27 | #include "osabi.h" | |
28 | #include "symtab.h" | |
29 | ||
30 | #include "gdb_string.h" | |
31 | ||
32 | #include "amd64-tdep.h" | |
33 | #include "solib-svr4.h" | |
34 | ||
35 | /* Mapping between the general-purpose registers in gregset_t format | |
36 | and GDB's register cache layout. */ | |
37 | ||
38 | /* From <sys/regset.h>. */ | |
39 | static int amd64_sol2_gregset_reg_offset[] = { | |
40 | 14 * 8, /* %rax */ | |
41 | 11 * 8, /* %rbx */ | |
42 | 13 * 8, /* %rcx */ | |
43 | 12 * 8, /* %rdx */ | |
44 | 9 * 8, /* %rsi */ | |
45 | 8 * 8, /* %rdi */ | |
46 | 10 * 8, /* %rbp */ | |
47 | 20 * 8, /* %rsp */ | |
48 | 7 * 8, /* %r8 ... */ | |
49 | 6 * 8, | |
50 | 5 * 8, | |
51 | 4 * 8, | |
52 | 3 * 8, | |
53 | 2 * 8, | |
54 | 1 * 8, | |
55 | 0 * 8, /* ... %r15 */ | |
56 | 17 * 8, /* %rip */ | |
57 | 16 * 8, /* %eflags */ | |
58 | 18 * 8, /* %cs */ | |
59 | 21 * 8, /* %ss */ | |
60 | 25 * 8, /* %ds */ | |
61 | 24 * 8, /* %es */ | |
62 | 22 * 8, /* %fs */ | |
63 | 23 * 8 /* %gs */ | |
64 | }; | |
65 | \f | |
66 | ||
67 | /* Return whether the frame preceding NEXT_FRAME corresponds to a | |
68 | Solaris sigtramp routine. */ | |
69 | ||
70 | static int | |
71 | amd64_sol2_sigtramp_p (struct frame_info *next_frame) | |
72 | { | |
73 | CORE_ADDR pc = frame_pc_unwind (next_frame); | |
74 | char *name; | |
75 | ||
76 | find_pc_partial_function (pc, &name, NULL, NULL); | |
77 | return (name && (strcmp ("sigacthandler", name) == 0 | |
78 | || strcmp (name, "ucbsigvechandler") == 0)); | |
79 | } | |
80 | ||
81 | /* Solaris doesn't have a 'struct sigcontext', but it does have a | |
82 | 'mcontext_t' that contains the saved set of machine registers. */ | |
83 | ||
84 | static CORE_ADDR | |
85 | amd64_sol2_mcontext_addr (struct frame_info *next_frame) | |
86 | { | |
87 | CORE_ADDR sp, ucontext_addr; | |
88 | ||
89 | sp = frame_unwind_register_unsigned (next_frame, AMD64_RSP_REGNUM); | |
90 | ucontext_addr = get_frame_memory_unsigned (next_frame, sp + 8, 8); | |
91 | ||
92 | return ucontext_addr + 72; | |
93 | } | |
94 | ||
95 | static void | |
96 | amd64_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | |
97 | { | |
98 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
99 | ||
100 | tdep->gregset_reg_offset = amd64_sol2_gregset_reg_offset; | |
101 | tdep->gregset_num_regs = ARRAY_SIZE (amd64_sol2_gregset_reg_offset); | |
102 | tdep->sizeof_gregset = 28 * 8; | |
103 | ||
104 | amd64_init_abi (info, gdbarch); | |
105 | ||
106 | tdep->sigtramp_p = amd64_sol2_sigtramp_p; | |
107 | tdep->sigcontext_addr = amd64_sol2_mcontext_addr; | |
108 | tdep->sc_reg_offset = tdep->gregset_reg_offset; | |
109 | tdep->sc_num_regs = tdep->gregset_num_regs; | |
110 | ||
111 | /* Solaris uses SVR4-style shared libraries. */ | |
112 | set_solib_svr4_fetch_link_map_offsets | |
113 | (gdbarch, svr4_lp64_fetch_link_map_offsets); | |
114 | } | |
115 | \f | |
116 | ||
117 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
118 | extern void _initialize_amd64_sol2_tdep (void); | |
119 | ||
120 | void | |
121 | _initialize_amd64_sol2_tdep (void) | |
122 | { | |
123 | gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64, | |
124 | GDB_OSABI_SOLARIS, amd64_sol2_init_abi); | |
125 | } |