1 /* Target-dependent code for AMD64 Solaris.
2
3 Copyright (C) 2001-2024 Free Software Foundation, Inc.
4
5 Contributed by Joseph Myers, CodeSourcery, LLC.
6
7 This file is part of GDB.
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21
22 #include "frame.h"
23 #include "gdbcore.h"
24 #include "regcache.h"
25 #include "osabi.h"
26 #include "symtab.h"
27
28 #include "sol2-tdep.h"
29 #include "amd64-tdep.h"
30 #include "gdbsupport/x86-xstate.h"
31 #include "solib-svr4.h"
32
33 /* Mapping between the general-purpose registers in gregset_t format
34 and GDB's register cache layout. */
35
36 /* From <sys/regset.h>. */
37 static int amd64_sol2_gregset_reg_offset[] = {
38 14 * 8, /* %rax */
39 11 * 8, /* %rbx */
40 13 * 8, /* %rcx */
41 12 * 8, /* %rdx */
42 9 * 8, /* %rsi */
43 8 * 8, /* %rdi */
44 10 * 8, /* %rbp */
45 20 * 8, /* %rsp */
46 7 * 8, /* %r8 ... */
47 6 * 8,
48 5 * 8,
49 4 * 8,
50 3 * 8,
51 2 * 8,
52 1 * 8,
53 0 * 8, /* ... %r15 */
54 17 * 8, /* %rip */
55 19 * 8, /* %eflags */
56 18 * 8, /* %cs */
57 21 * 8, /* %ss */
58 25 * 8, /* %ds */
59 24 * 8, /* %es */
60 22 * 8, /* %fs */
61 23 * 8 /* %gs */
62 };
63
64
65 /* Solaris doesn't have a 'struct sigcontext', but it does have a
66 'mcontext_t' that contains the saved set of machine registers. */
67
68 static CORE_ADDR
amd64_sol2_mcontext_addr(const frame_info_ptr & this_frame)69 amd64_sol2_mcontext_addr (const frame_info_ptr &this_frame)
70 {
71 CORE_ADDR sp, ucontext_addr;
72
73 sp = get_frame_register_unsigned (this_frame, AMD64_RSP_REGNUM);
74 ucontext_addr = get_frame_memory_unsigned (this_frame, sp + 8, 8);
75
76 return ucontext_addr + 72;
77 }
78
79 static void
amd64_sol2_init_abi(struct gdbarch_info info,struct gdbarch * gdbarch)80 amd64_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
81 {
82 i386_gdbarch_tdep *tdep = gdbarch_tdep<i386_gdbarch_tdep> (gdbarch);
83
84 tdep->gregset_reg_offset = amd64_sol2_gregset_reg_offset;
85 tdep->gregset_num_regs = ARRAY_SIZE (amd64_sol2_gregset_reg_offset);
86 tdep->sizeof_gregset = 28 * 8;
87
88 amd64_init_abi (info, gdbarch,
89 amd64_target_description (X86_XSTATE_SSE_MASK, true));
90
91 sol2_init_abi (info, gdbarch);
92
93 tdep->sigtramp_p = sol2_sigtramp_p;
94 tdep->sigcontext_addr = amd64_sol2_mcontext_addr;
95 tdep->sc_reg_offset = tdep->gregset_reg_offset;
96 tdep->sc_num_regs = tdep->gregset_num_regs;
97
98 /* Solaris uses SVR4-style shared libraries. */
99 set_solib_svr4_fetch_link_map_offsets
100 (gdbarch, svr4_lp64_fetch_link_map_offsets);
101 }
102
103 void _initialize_amd64_sol2_tdep ();
104 void
_initialize_amd64_sol2_tdep()105 _initialize_amd64_sol2_tdep ()
106 {
107 gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64,
108 GDB_OSABI_SOLARIS, amd64_sol2_init_abi);
109 }
110