/* Target-dependent code for FreeBSD/amd64.
- Copyright 2003 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
This file is part of GDB.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
#include "defs.h"
#include "arch-utils.h"
#include "regcache.h"
#include "osabi.h"
+#include "gdb_assert.h"
#include "gdb_string.h"
-#include "x86-64-tdep.h"
+#include "amd64-tdep.h"
+#include "bsd-uthread.h"
+#include "solib-svr4.h"
/* Support for signal handlers. */
/* The `struct sigcontext' (which really is an `ucontext_t' on
FreeBSD/amd64) lives at a fixed offset in the signal frame. See
<machine/sigframe.h>. */
- sp = frame_unwind_register_unsigned (next_frame, X86_64_RSP_REGNUM);
+ sp = frame_unwind_register_unsigned (next_frame, AMD64_RSP_REGNUM);
return sp + 16;
}
\f
/* From <machine/reg.h>. */
static int amd64fbsd_r_reg_offset[] =
{
- 14 * 8, 11 * 8, /* %rax, %rbx */
- 13 * 8, 12 * 8, /* %rcx, %rdx */
- 9 * 8, 8 * 8, /* %rsi, %rdi */
- 10 * 8, 20 * 8, /* %rbp, %rsp */
- 7 * 8, 6 * 8, 5 * 8, 4 * 8, /* %r8 ... */
- 3 * 8, 2 * 8, 1 * 8, 0 * 8, /* ... %r15 */
- 17 * 8, 19 * 8, /* %rip, %eflags */
- -1, -1, /* %ds, %es */
- -1, -1 /* %fs, %gs */
+ 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 */
+ -1, /* %ds */
+ -1, /* %es */
+ -1, /* %fs */
+ -1 /* %gs */
};
/* Location of the signal trampoline. */
-CORE_ADDR amd64fbsd_sigtramp_start = 0x7fffffffffc0;
-CORE_ADDR amd64fbsd_sigtramp_end = 0x7fffffffffe0;
+CORE_ADDR amd64fbsd_sigtramp_start_addr = 0x7fffffffffc0;
+CORE_ADDR amd64fbsd_sigtramp_end_addr = 0x7fffffffffe0;
/* From <machine/signal.h>. */
-int amd64fbsd_sc_reg_offset[X86_64_NUM_GREGS] =
+int amd64fbsd_sc_reg_offset[] =
{
24 + 6 * 8, /* %rax */
24 + 7 * 8, /* %rbx */
24 + 0 * 8, /* %rdi */
24 + 8 * 8, /* %rbp */
24 + 22 * 8, /* %rsp */
- 24 + 4 * 8, /* %r8 */
- 24 + 5 * 8, /* %r9 */
- 24 + 9 * 8, /* %r10 */
- 24 + 10 * 8, /* %r11 */
- 24 + 11 * 8, /* %r12 */
- 24 + 12 * 8, /* %r13 */
- 24 + 13 * 8, /* %r14 */
- 24 + 14 * 8, /* %r15 */
+ 24 + 4 * 8, /* %r8 ... */
+ 24 + 5 * 8,
+ 24 + 9 * 8,
+ 24 + 10 * 8,
+ 24 + 11 * 8,
+ 24 + 12 * 8,
+ 24 + 13 * 8,
+ 24 + 14 * 8, /* ... %r15 */
24 + 19 * 8, /* %rip */
24 + 21 * 8, /* %eflags */
+ 24 + 20 * 8, /* %cs */
+ 24 + 23 * 8, /* %ss */
-1, /* %ds */
-1, /* %es */
-1, /* %fs */
-1 /* %gs */
};
+/* From /usr/src/lib/libc/amd64/gen/_setjmp.S. */
+static int amd64fbsd_jmp_buf_reg_offset[] =
+{
+ -1, /* %rax */
+ 1 * 8, /* %rbx */
+ -1, /* %rcx */
+ -1, /* %rdx */
+ -1, /* %rsi */
+ -1, /* %rdi */
+ 3 * 8, /* %rbp */
+ 2 * 8, /* %rsp */
+ -1, /* %r8 ... */
+ -1,
+ -1,
+ -1, /* ... %r11 */
+ 4 * 8, /* %r12 ... */
+ 5 * 8,
+ 6 * 8,
+ 7 * 8, /* ... %r15 */
+ 0 * 8 /* %rip */
+};
+
+static void
+amd64fbsd_supply_uthread (struct regcache *regcache,
+ int regnum, CORE_ADDR addr)
+{
+ gdb_byte buf[8];
+ int i;
+
+ gdb_assert (regnum >= -1);
+
+ for (i = 0; i < ARRAY_SIZE (amd64fbsd_jmp_buf_reg_offset); i++)
+ {
+ if (amd64fbsd_jmp_buf_reg_offset[i] != -1
+ && (regnum == -1 || regnum == i))
+ {
+ read_memory (addr + amd64fbsd_jmp_buf_reg_offset[i], buf, 8);
+ regcache_raw_supply (regcache, i, buf);
+ }
+ }
+}
+
+static void
+amd64fbsd_collect_uthread (const struct regcache *regcache,
+ int regnum, CORE_ADDR addr)
+{
+ gdb_byte buf[8];
+ int i;
+
+ gdb_assert (regnum >= -1);
+
+ for (i = 0; i < ARRAY_SIZE (amd64fbsd_jmp_buf_reg_offset); i++)
+ {
+ if (amd64fbsd_jmp_buf_reg_offset[i] != -1
+ && (regnum == -1 || regnum == i))
+ {
+ regcache_raw_collect (regcache, i, buf);
+ write_memory (addr + amd64fbsd_jmp_buf_reg_offset[i], buf, 8);
+ }
+ }
+}
+
void
amd64fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
tdep->gregset_num_regs = ARRAY_SIZE (amd64fbsd_r_reg_offset);
tdep->sizeof_gregset = 22 * 8;
- x86_64_init_abi (info, gdbarch);
+ amd64_init_abi (info, gdbarch);
- tdep->sigtramp_start = amd64fbsd_sigtramp_start;
- tdep->sigtramp_end = amd64fbsd_sigtramp_end;
+ tdep->sigtramp_start = amd64fbsd_sigtramp_start_addr;
+ tdep->sigtramp_end = amd64fbsd_sigtramp_end_addr;
tdep->sigcontext_addr = amd64fbsd_sigcontext_addr;
tdep->sc_reg_offset = amd64fbsd_sc_reg_offset;
tdep->sc_num_regs = ARRAY_SIZE (amd64fbsd_sc_reg_offset);
+
+ /* FreeBSD provides a user-level threads implementation. */
+ bsd_uthread_set_supply_uthread (gdbarch, amd64fbsd_supply_uthread);
+ bsd_uthread_set_collect_uthread (gdbarch, amd64fbsd_collect_uthread);
+
+ /* FreeBSD uses SVR4-style shared libraries. */
+ set_solib_svr4_fetch_link_map_offsets
+ (gdbarch, svr4_lp64_fetch_link_map_offsets);
}
\f