/* Target-dependent code for FreeBSD/amd64.
|
/* Target-dependent code for FreeBSD/amd64.
|
|
|
Copyright (C) 2003, 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
|
Copyright (C) 2003, 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
|
|
|
This file is part of GDB.
|
This file is part of GDB.
|
|
|
This program is free software; you can redistribute it and/or modify
|
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
|
it under the terms of the GNU General Public License as published by
|
the Free Software Foundation; either version 3 of the License, or
|
the Free Software Foundation; either version 3 of the License, or
|
(at your option) any later version.
|
(at your option) any later version.
|
|
|
This program is distributed in the hope that it will be useful,
|
This program is distributed in the hope that it will be useful,
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
GNU General Public License for more details.
|
GNU General Public License for more details.
|
|
|
You should have received a copy of the GNU General Public License
|
You should have received a copy of the GNU General Public License
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
#include "defs.h"
|
#include "defs.h"
|
#include "arch-utils.h"
|
#include "arch-utils.h"
|
#include "frame.h"
|
#include "frame.h"
|
#include "gdbcore.h"
|
#include "gdbcore.h"
|
#include "regcache.h"
|
#include "regcache.h"
|
#include "osabi.h"
|
#include "osabi.h"
|
|
|
#include "gdb_assert.h"
|
#include "gdb_assert.h"
|
#include "gdb_string.h"
|
#include "gdb_string.h"
|
|
|
#include "amd64-tdep.h"
|
#include "amd64-tdep.h"
|
#include "bsd-uthread.h"
|
#include "bsd-uthread.h"
|
#include "solib-svr4.h"
|
#include "solib-svr4.h"
|
|
|
/* Support for signal handlers. */
|
/* Support for signal handlers. */
|
|
|
/* Assuming NEXT_FRAME is for a frame following a BSD sigtramp
|
/* Assuming NEXT_FRAME is for a frame following a BSD sigtramp
|
routine, return the address of the associated sigcontext structure. */
|
routine, return the address of the associated sigcontext structure. */
|
|
|
static CORE_ADDR
|
static CORE_ADDR
|
amd64fbsd_sigcontext_addr (struct frame_info *next_frame)
|
amd64fbsd_sigcontext_addr (struct frame_info *next_frame)
|
{
|
{
|
CORE_ADDR sp;
|
CORE_ADDR sp;
|
|
|
/* The `struct sigcontext' (which really is an `ucontext_t' on
|
/* The `struct sigcontext' (which really is an `ucontext_t' on
|
FreeBSD/amd64) lives at a fixed offset in the signal frame. See
|
FreeBSD/amd64) lives at a fixed offset in the signal frame. See
|
<machine/sigframe.h>. */
|
<machine/sigframe.h>. */
|
sp = frame_unwind_register_unsigned (next_frame, AMD64_RSP_REGNUM);
|
sp = frame_unwind_register_unsigned (next_frame, AMD64_RSP_REGNUM);
|
return sp + 16;
|
return sp + 16;
|
}
|
}
|
|
|
/* FreeBSD 5.1-RELEASE or later. */
|
/* FreeBSD 5.1-RELEASE or later. */
|
|
|
/* Mapping between the general-purpose registers in `struct reg'
|
/* Mapping between the general-purpose registers in `struct reg'
|
format and GDB's register cache layout.
|
format and GDB's register cache layout.
|
|
|
Note that some registers are 32-bit, but since we're little-endian
|
Note that some registers are 32-bit, but since we're little-endian
|
we get away with that. */
|
we get away with that. */
|
|
|
/* From <machine/reg.h>. */
|
/* From <machine/reg.h>. */
|
static int amd64fbsd_r_reg_offset[] =
|
static int amd64fbsd_r_reg_offset[] =
|
{
|
{
|
14 * 8, /* %rax */
|
14 * 8, /* %rax */
|
11 * 8, /* %rbx */
|
11 * 8, /* %rbx */
|
13 * 8, /* %rcx */
|
13 * 8, /* %rcx */
|
12 * 8, /* %rdx */
|
12 * 8, /* %rdx */
|
9 * 8, /* %rsi */
|
9 * 8, /* %rsi */
|
8 * 8, /* %rdi */
|
8 * 8, /* %rdi */
|
10 * 8, /* %rbp */
|
10 * 8, /* %rbp */
|
20 * 8, /* %rsp */
|
20 * 8, /* %rsp */
|
7 * 8, /* %r8 ... */
|
7 * 8, /* %r8 ... */
|
6 * 8,
|
6 * 8,
|
5 * 8,
|
5 * 8,
|
4 * 8,
|
4 * 8,
|
3 * 8,
|
3 * 8,
|
2 * 8,
|
2 * 8,
|
1 * 8,
|
1 * 8,
|
0 * 8, /* ... %r15 */
|
0 * 8, /* ... %r15 */
|
17 * 8, /* %rip */
|
17 * 8, /* %rip */
|
19 * 8, /* %eflags */
|
19 * 8, /* %eflags */
|
18 * 8, /* %cs */
|
18 * 8, /* %cs */
|
21 * 8, /* %ss */
|
21 * 8, /* %ss */
|
-1, /* %ds */
|
-1, /* %ds */
|
-1, /* %es */
|
-1, /* %es */
|
-1, /* %fs */
|
-1, /* %fs */
|
-1 /* %gs */
|
-1 /* %gs */
|
};
|
};
|
|
|
/* Location of the signal trampoline. */
|
/* Location of the signal trampoline. */
|
CORE_ADDR amd64fbsd_sigtramp_start_addr = 0x7fffffffffc0ULL;
|
CORE_ADDR amd64fbsd_sigtramp_start_addr = 0x7fffffffffc0ULL;
|
CORE_ADDR amd64fbsd_sigtramp_end_addr = 0x7fffffffffe0ULL;
|
CORE_ADDR amd64fbsd_sigtramp_end_addr = 0x7fffffffffe0ULL;
|
|
|
/* From <machine/signal.h>. */
|
/* From <machine/signal.h>. */
|
int amd64fbsd_sc_reg_offset[] =
|
int amd64fbsd_sc_reg_offset[] =
|
{
|
{
|
24 + 6 * 8, /* %rax */
|
24 + 6 * 8, /* %rax */
|
24 + 7 * 8, /* %rbx */
|
24 + 7 * 8, /* %rbx */
|
24 + 3 * 8, /* %rcx */
|
24 + 3 * 8, /* %rcx */
|
24 + 2 * 8, /* %rdx */
|
24 + 2 * 8, /* %rdx */
|
24 + 1 * 8, /* %rsi */
|
24 + 1 * 8, /* %rsi */
|
24 + 0 * 8, /* %rdi */
|
24 + 0 * 8, /* %rdi */
|
24 + 8 * 8, /* %rbp */
|
24 + 8 * 8, /* %rbp */
|
24 + 22 * 8, /* %rsp */
|
24 + 22 * 8, /* %rsp */
|
24 + 4 * 8, /* %r8 ... */
|
24 + 4 * 8, /* %r8 ... */
|
24 + 5 * 8,
|
24 + 5 * 8,
|
24 + 9 * 8,
|
24 + 9 * 8,
|
24 + 10 * 8,
|
24 + 10 * 8,
|
24 + 11 * 8,
|
24 + 11 * 8,
|
24 + 12 * 8,
|
24 + 12 * 8,
|
24 + 13 * 8,
|
24 + 13 * 8,
|
24 + 14 * 8, /* ... %r15 */
|
24 + 14 * 8, /* ... %r15 */
|
24 + 19 * 8, /* %rip */
|
24 + 19 * 8, /* %rip */
|
24 + 21 * 8, /* %eflags */
|
24 + 21 * 8, /* %eflags */
|
24 + 20 * 8, /* %cs */
|
24 + 20 * 8, /* %cs */
|
24 + 23 * 8, /* %ss */
|
24 + 23 * 8, /* %ss */
|
-1, /* %ds */
|
-1, /* %ds */
|
-1, /* %es */
|
-1, /* %es */
|
-1, /* %fs */
|
-1, /* %fs */
|
-1 /* %gs */
|
-1 /* %gs */
|
};
|
};
|
|
|
/* From /usr/src/lib/libc/amd64/gen/_setjmp.S. */
|
/* From /usr/src/lib/libc/amd64/gen/_setjmp.S. */
|
static int amd64fbsd_jmp_buf_reg_offset[] =
|
static int amd64fbsd_jmp_buf_reg_offset[] =
|
{
|
{
|
-1, /* %rax */
|
-1, /* %rax */
|
1 * 8, /* %rbx */
|
1 * 8, /* %rbx */
|
-1, /* %rcx */
|
-1, /* %rcx */
|
-1, /* %rdx */
|
-1, /* %rdx */
|
-1, /* %rsi */
|
-1, /* %rsi */
|
-1, /* %rdi */
|
-1, /* %rdi */
|
3 * 8, /* %rbp */
|
3 * 8, /* %rbp */
|
2 * 8, /* %rsp */
|
2 * 8, /* %rsp */
|
-1, /* %r8 ... */
|
-1, /* %r8 ... */
|
-1,
|
-1,
|
-1,
|
-1,
|
-1, /* ... %r11 */
|
-1, /* ... %r11 */
|
4 * 8, /* %r12 ... */
|
4 * 8, /* %r12 ... */
|
5 * 8,
|
5 * 8,
|
6 * 8,
|
6 * 8,
|
7 * 8, /* ... %r15 */
|
7 * 8, /* ... %r15 */
|
0 * 8 /* %rip */
|
0 * 8 /* %rip */
|
};
|
};
|
|
|
static void
|
static void
|
amd64fbsd_supply_uthread (struct regcache *regcache,
|
amd64fbsd_supply_uthread (struct regcache *regcache,
|
int regnum, CORE_ADDR addr)
|
int regnum, CORE_ADDR addr)
|
{
|
{
|
gdb_byte buf[8];
|
gdb_byte buf[8];
|
int i;
|
int i;
|
|
|
gdb_assert (regnum >= -1);
|
gdb_assert (regnum >= -1);
|
|
|
for (i = 0; i < ARRAY_SIZE (amd64fbsd_jmp_buf_reg_offset); i++)
|
for (i = 0; i < ARRAY_SIZE (amd64fbsd_jmp_buf_reg_offset); i++)
|
{
|
{
|
if (amd64fbsd_jmp_buf_reg_offset[i] != -1
|
if (amd64fbsd_jmp_buf_reg_offset[i] != -1
|
&& (regnum == -1 || regnum == i))
|
&& (regnum == -1 || regnum == i))
|
{
|
{
|
read_memory (addr + amd64fbsd_jmp_buf_reg_offset[i], buf, 8);
|
read_memory (addr + amd64fbsd_jmp_buf_reg_offset[i], buf, 8);
|
regcache_raw_supply (regcache, i, buf);
|
regcache_raw_supply (regcache, i, buf);
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
static void
|
static void
|
amd64fbsd_collect_uthread (const struct regcache *regcache,
|
amd64fbsd_collect_uthread (const struct regcache *regcache,
|
int regnum, CORE_ADDR addr)
|
int regnum, CORE_ADDR addr)
|
{
|
{
|
gdb_byte buf[8];
|
gdb_byte buf[8];
|
int i;
|
int i;
|
|
|
gdb_assert (regnum >= -1);
|
gdb_assert (regnum >= -1);
|
|
|
for (i = 0; i < ARRAY_SIZE (amd64fbsd_jmp_buf_reg_offset); i++)
|
for (i = 0; i < ARRAY_SIZE (amd64fbsd_jmp_buf_reg_offset); i++)
|
{
|
{
|
if (amd64fbsd_jmp_buf_reg_offset[i] != -1
|
if (amd64fbsd_jmp_buf_reg_offset[i] != -1
|
&& (regnum == -1 || regnum == i))
|
&& (regnum == -1 || regnum == i))
|
{
|
{
|
regcache_raw_collect (regcache, i, buf);
|
regcache_raw_collect (regcache, i, buf);
|
write_memory (addr + amd64fbsd_jmp_buf_reg_offset[i], buf, 8);
|
write_memory (addr + amd64fbsd_jmp_buf_reg_offset[i], buf, 8);
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
void
|
void
|
amd64fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
amd64fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
{
|
{
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
|
|
/* Obviously FreeBSD is BSD-based. */
|
/* Obviously FreeBSD is BSD-based. */
|
i386bsd_init_abi (info, gdbarch);
|
i386bsd_init_abi (info, gdbarch);
|
|
|
tdep->gregset_reg_offset = amd64fbsd_r_reg_offset;
|
tdep->gregset_reg_offset = amd64fbsd_r_reg_offset;
|
tdep->gregset_num_regs = ARRAY_SIZE (amd64fbsd_r_reg_offset);
|
tdep->gregset_num_regs = ARRAY_SIZE (amd64fbsd_r_reg_offset);
|
tdep->sizeof_gregset = 22 * 8;
|
tdep->sizeof_gregset = 22 * 8;
|
|
|
amd64_init_abi (info, gdbarch);
|
amd64_init_abi (info, gdbarch);
|
|
|
tdep->sigtramp_start = amd64fbsd_sigtramp_start_addr;
|
tdep->sigtramp_start = amd64fbsd_sigtramp_start_addr;
|
tdep->sigtramp_end = amd64fbsd_sigtramp_end_addr;
|
tdep->sigtramp_end = amd64fbsd_sigtramp_end_addr;
|
tdep->sigcontext_addr = amd64fbsd_sigcontext_addr;
|
tdep->sigcontext_addr = amd64fbsd_sigcontext_addr;
|
tdep->sc_reg_offset = amd64fbsd_sc_reg_offset;
|
tdep->sc_reg_offset = amd64fbsd_sc_reg_offset;
|
tdep->sc_num_regs = ARRAY_SIZE (amd64fbsd_sc_reg_offset);
|
tdep->sc_num_regs = ARRAY_SIZE (amd64fbsd_sc_reg_offset);
|
|
|
/* FreeBSD provides a user-level threads implementation. */
|
/* FreeBSD provides a user-level threads implementation. */
|
bsd_uthread_set_supply_uthread (gdbarch, amd64fbsd_supply_uthread);
|
bsd_uthread_set_supply_uthread (gdbarch, amd64fbsd_supply_uthread);
|
bsd_uthread_set_collect_uthread (gdbarch, amd64fbsd_collect_uthread);
|
bsd_uthread_set_collect_uthread (gdbarch, amd64fbsd_collect_uthread);
|
|
|
/* FreeBSD uses SVR4-style shared libraries. */
|
/* FreeBSD uses SVR4-style shared libraries. */
|
set_solib_svr4_fetch_link_map_offsets
|
set_solib_svr4_fetch_link_map_offsets
|
(gdbarch, svr4_lp64_fetch_link_map_offsets);
|
(gdbarch, svr4_lp64_fetch_link_map_offsets);
|
}
|
}
|
|
|
|
|
/* Provide a prototype to silence -Wmissing-prototypes. */
|
/* Provide a prototype to silence -Wmissing-prototypes. */
|
void _initialize_amd64fbsd_tdep (void);
|
void _initialize_amd64fbsd_tdep (void);
|
|
|
void
|
void
|
_initialize_amd64fbsd_tdep (void)
|
_initialize_amd64fbsd_tdep (void)
|
{
|
{
|
gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64,
|
gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64,
|
GDB_OSABI_FREEBSD_ELF, amd64fbsd_init_abi);
|
GDB_OSABI_FREEBSD_ELF, amd64fbsd_init_abi);
|
}
|
}
|
|
|