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/* Target-dependent code for AMD64 Solaris.
Copyright (C) 2001-2019 Free Software Foundation, Inc.
Contributed by Joseph Myers, CodeSourcery, LLC.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "frame.h"
#include "gdbcore.h"
#include "regcache.h"
#include "osabi.h"
#include "symtab.h"
#include "sol2-tdep.h"
#include "amd64-tdep.h"
#include "common/x86-xstate.h"
#include "solib-svr4.h"
/* Mapping between the general-purpose registers in gregset_t format
and GDB's register cache layout. */
/* From <sys/regset.h>. */
static int amd64_sol2_gregset_reg_offset[] = {
14 * 8, /* %rax */
11 * 8, /* %rbx */
13 * 8, /* %rcx */
12 * 8, /* %rdx */
9 * 8, /* %rsi */
8 * 8, /* %rdi */
10 * 8, /* %rbp */
20 * 8, /* %rsp */
7 * 8, /* %r8 ... */
6 * 8,
5 * 8,
4 * 8,
3 * 8,
2 * 8,
1 * 8,
0 * 8, /* ... %r15 */
17 * 8, /* %rip */
19 * 8, /* %eflags */
18 * 8, /* %cs */
21 * 8, /* %ss */
25 * 8, /* %ds */
24 * 8, /* %es */
22 * 8, /* %fs */
23 * 8 /* %gs */
};
/* Return whether THIS_FRAME corresponds to a Solaris sigtramp
routine. */
static int
amd64_sol2_sigtramp_p (struct frame_info *this_frame)
{
CORE_ADDR pc = get_frame_pc (this_frame);
const char *name;
find_pc_partial_function (pc, &name, NULL, NULL);
return (name && (strcmp ("sigacthandler", name) == 0
|| strcmp (name, "ucbsigvechandler") == 0
|| strcmp (name, "__sighndlr") == 0));
}
/* Solaris doesn't have a 'struct sigcontext', but it does have a
'mcontext_t' that contains the saved set of machine registers. */
static CORE_ADDR
amd64_sol2_mcontext_addr (struct frame_info *this_frame)
{
CORE_ADDR sp, ucontext_addr;
sp = get_frame_register_unsigned (this_frame, AMD64_RSP_REGNUM);
ucontext_addr = get_frame_memory_unsigned (this_frame, sp + 8, 8);
return ucontext_addr + 72;
}
static void
amd64_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
tdep->gregset_reg_offset = amd64_sol2_gregset_reg_offset;
tdep->gregset_num_regs = ARRAY_SIZE (amd64_sol2_gregset_reg_offset);
tdep->sizeof_gregset = 28 * 8;
amd64_init_abi (info, gdbarch,
amd64_target_description (X86_XSTATE_SSE_MASK, true));
tdep->sigtramp_p = amd64_sol2_sigtramp_p;
tdep->sigcontext_addr = amd64_sol2_mcontext_addr;
tdep->sc_reg_offset = tdep->gregset_reg_offset;
tdep->sc_num_regs = tdep->gregset_num_regs;
/* Solaris uses SVR4-style shared libraries. */
set_gdbarch_skip_solib_resolver (gdbarch, sol2_skip_solib_resolver);
set_solib_svr4_fetch_link_map_offsets
(gdbarch, svr4_lp64_fetch_link_map_offsets);
/* How to print LWP PTIDs from core files. */
set_gdbarch_core_pid_to_str (gdbarch, sol2_core_pid_to_str);
}
void
_initialize_amd64_sol2_tdep (void)
{
gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64,
GDB_OSABI_SOLARIS, amd64_sol2_init_abi);
}
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