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[gdb.git] / gdb / amd64-sol2-tdep.c
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1 /* Target-dependent code for AMD64 Solaris.
3 Copyright (C) 2001, 2002, 2003, 2004, 2006, 2007, 2008
4 Free Software Foundation, Inc.
6 Contributed by Joseph Myers, CodeSourcery, LLC.
8 This file is part of GDB.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 #include "defs.h"
24 #include "frame.h"
25 #include "gdbcore.h"
26 #include "regcache.h"
27 #include "osabi.h"
28 #include "symtab.h"
30 #include "gdb_string.h"
32 #include "sol2-tdep.h"
33 #include "amd64-tdep.h"
34 #include "solib-svr4.h"
36 /* Mapping between the general-purpose registers in gregset_t format
37 and GDB's register cache layout. */
39 /* From <sys/regset.h>. */
40 static int amd64_sol2_gregset_reg_offset[] = {
41 14 * 8, /* %rax */
42 11 * 8, /* %rbx */
43 13 * 8, /* %rcx */
44 12 * 8, /* %rdx */
45 9 * 8, /* %rsi */
46 8 * 8, /* %rdi */
47 10 * 8, /* %rbp */
48 20 * 8, /* %rsp */
49 7 * 8, /* %r8 ... */
50 6 * 8,
51 5 * 8,
52 4 * 8,
53 3 * 8,
54 2 * 8,
55 1 * 8,
56 0 * 8, /* ... %r15 */
57 17 * 8, /* %rip */
58 16 * 8, /* %eflags */
59 18 * 8, /* %cs */
60 21 * 8, /* %ss */
61 25 * 8, /* %ds */
62 24 * 8, /* %es */
63 22 * 8, /* %fs */
64 23 * 8 /* %gs */
68 /* Return whether the frame preceding NEXT_FRAME corresponds to a
69 Solaris sigtramp routine. */
71 static int
72 amd64_sol2_sigtramp_p (struct frame_info *next_frame)
74 CORE_ADDR pc = frame_pc_unwind (next_frame);
75 char *name;
77 find_pc_partial_function (pc, &name, NULL, NULL);
78 return (name && (strcmp ("sigacthandler", name) == 0
79 || strcmp (name, "ucbsigvechandler") == 0));
82 /* Solaris doesn't have a 'struct sigcontext', but it does have a
83 'mcontext_t' that contains the saved set of machine registers. */
85 static CORE_ADDR
86 amd64_sol2_mcontext_addr (struct frame_info *next_frame)
88 CORE_ADDR sp, ucontext_addr;
90 sp = frame_unwind_register_unsigned (next_frame, AMD64_RSP_REGNUM);
91 ucontext_addr = get_frame_memory_unsigned (next_frame, sp + 8, 8);
93 return ucontext_addr + 72;
96 static void
97 amd64_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
99 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
101 tdep->gregset_reg_offset = amd64_sol2_gregset_reg_offset;
102 tdep->gregset_num_regs = ARRAY_SIZE (amd64_sol2_gregset_reg_offset);
103 tdep->sizeof_gregset = 28 * 8;
105 amd64_init_abi (info, gdbarch);
107 tdep->sigtramp_p = amd64_sol2_sigtramp_p;
108 tdep->sigcontext_addr = amd64_sol2_mcontext_addr;
109 tdep->sc_reg_offset = tdep->gregset_reg_offset;
110 tdep->sc_num_regs = tdep->gregset_num_regs;
112 /* Solaris uses SVR4-style shared libraries. */
113 set_gdbarch_skip_solib_resolver (gdbarch, sol2_skip_solib_resolver);
114 set_solib_svr4_fetch_link_map_offsets
115 (gdbarch, svr4_lp64_fetch_link_map_offsets);
119 /* Provide a prototype to silence -Wmissing-prototypes. */
120 extern void _initialize_amd64_sol2_tdep (void);
122 void
123 _initialize_amd64_sol2_tdep (void)
125 gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64,
126 GDB_OSABI_SOLARIS, amd64_sol2_init_abi);