PR 1150

[deliverable/binutils-gdb.git] / gdb / amd64fbsd-tdep.c

diff --git a/gdb/amd64fbsd-tdep.c b/gdb/amd64fbsd-tdep.c
index fb275f6ecd06ae8d55c3829dd81913c964fcb6ed..062fc9ac6b7eb005bf577b223aa9ea4b132f4dc1 100644 (file)
--- a/gdb/amd64fbsd-tdep.c
+++ b/gdb/amd64fbsd-tdep.c
@@ -1,6 +1,6 @@
 /* Target-dependent code for FreeBSD/amd64.
 
-   Copyright 2003, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -16,8 +16,8 @@
 
    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"
@@ -26,9 +26,11 @@
 #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.  */
@@ -118,6 +120,68 @@ int amd64fbsd_sc_reg_offset[] =
   -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)
 {
@@ -138,6 +202,10 @@ amd64fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   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);