(TAGS): Put DEPFILES back and add as a dependency.

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

diff --git a/gdb/amd64fbsd-tdep.c b/gdb/amd64fbsd-tdep.c
index 3abdb0b616b85d305d7de5046e5377ee70dfad7e..d7349559b1ec508fc64caa94c8f0e6d498c18f5a 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 2003, 2004, 2005 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -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.  */
@@ -44,7 +46,7 @@ amd64fbsd_sigcontext_addr (struct frame_info *next_frame)
   /* 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
@@ -86,8 +88,8 @@ static int amd64fbsd_r_reg_offset[] =
 };
 
 /* 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[] =
@@ -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)
 {
@@ -130,14 +194,18 @@ 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);