1/* Target-dependent code for AMD64 Solaris.
2
3   Copyright (C) 2001-2020 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 "defs.h"
23#include "frame.h"
24#include "gdbcore.h"
25#include "regcache.h"
26#include "osabi.h"
27#include "symtab.h"
28
29#include "sol2-tdep.h"
30#include "amd64-tdep.h"
31#include "gdbsupport/x86-xstate.h"
32#include "solib-svr4.h"
33
34/* Mapping between the general-purpose registers in gregset_t format
35   and GDB's register cache layout.  */
36
37/* From <sys/regset.h>.  */
38static int amd64_sol2_gregset_reg_offset[] = {
39  14 * 8,			/* %rax */
40  11 * 8,			/* %rbx */
41  13 * 8,			/* %rcx */
42  12 * 8,			/* %rdx */
43  9 * 8,			/* %rsi */
44  8 * 8,			/* %rdi */
45  10 * 8,			/* %rbp */
46  20 * 8,			/* %rsp */
47  7 * 8,			/* %r8 ...  */
48  6 * 8,
49  5 * 8,
50  4 * 8,
51  3 * 8,
52  2 * 8,
53  1 * 8,
54  0 * 8,			/* ... %r15 */
55  17 * 8,			/* %rip */
56  19 * 8,			/* %eflags */
57  18 * 8,			/* %cs */
58  21 * 8,			/* %ss */
59  25 * 8,			/* %ds */
60  24 * 8,			/* %es */
61  22 * 8,			/* %fs */
62  23 * 8			/* %gs */
63};
64
65
66/* Solaris doesn't have a 'struct sigcontext', but it does have a
67   'mcontext_t' that contains the saved set of machine registers.  */
68
69static CORE_ADDR
70amd64_sol2_mcontext_addr (struct frame_info *this_frame)
71{
72  CORE_ADDR sp, ucontext_addr;
73
74  sp = get_frame_register_unsigned (this_frame, AMD64_RSP_REGNUM);
75  ucontext_addr = get_frame_memory_unsigned (this_frame, sp + 8, 8);
76
77  return ucontext_addr + 72;
78}
79
80static void
81amd64_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
82{
83  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
84
85  tdep->gregset_reg_offset = amd64_sol2_gregset_reg_offset;
86  tdep->gregset_num_regs = ARRAY_SIZE (amd64_sol2_gregset_reg_offset);
87  tdep->sizeof_gregset = 28 * 8;
88
89  amd64_init_abi (info, gdbarch,
90		  amd64_target_description (X86_XSTATE_SSE_MASK, true));
91
92  sol2_init_abi (info, gdbarch);
93
94  tdep->sigtramp_p = sol2_sigtramp_p;
95  tdep->sigcontext_addr = amd64_sol2_mcontext_addr;
96  tdep->sc_reg_offset = tdep->gregset_reg_offset;
97  tdep->sc_num_regs = tdep->gregset_num_regs;
98
99  /* Solaris uses SVR4-style shared libraries.  */
100  set_solib_svr4_fetch_link_map_offsets
101    (gdbarch, svr4_lp64_fetch_link_map_offsets);
102}
103
104void _initialize_amd64_sol2_tdep ();
105void
106_initialize_amd64_sol2_tdep ()
107{
108  gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64,
109			  GDB_OSABI_SOLARIS, amd64_sol2_init_abi);
110}
111