* defs.h (extract_signed_integer, extract_unsigned_integer,

[deliverable/binutils-gdb.git] / gdb / amd64-linux-tdep.c

diff --git a/gdb/amd64-linux-tdep.c b/gdb/amd64-linux-tdep.c
index aeb6600f235dc0684b466ce7c3dc27c794096ee3..92f52655d57c9cb7bf443cde0d224656057b010a 100644 (file)
--- a/gdb/amd64-linux-tdep.c
+++ b/gdb/amd64-linux-tdep.c
@@ -1,6 +1,6 @@
 /* Target-dependent code for GNU/Linux x86-64.
 
-   Copyright (C) 2001, 2003, 2004, 2005, 2006, 2007
+   Copyright (C) 2001, 2003, 2004, 2005, 2006, 2007, 2008, 2009
    Free Software Foundation, Inc.
    Contributed by Jiri Smid, SuSE Labs.
 
@@ -20,6 +20,7 @@
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "defs.h"
+#include "arch-utils.h"
 #include "frame.h"
 #include "gdbcore.h"
 #include "regcache.h"
@@ -28,6 +29,7 @@
 #include "gdbtypes.h"
 #include "reggroups.h"
 #include "amd64-linux-tdep.h"
+#include "linux-tdep.h"
 
 #include "gdb_string.h"
 
@@ -88,9 +90,9 @@ static const gdb_byte linux_sigtramp_code[] =
    the routine.  Otherwise, return 0.  */
 
 static CORE_ADDR
-amd64_linux_sigtramp_start (struct frame_info *next_frame)
+amd64_linux_sigtramp_start (struct frame_info *this_frame)
 {
-  CORE_ADDR pc = frame_pc_unwind (next_frame);
+  CORE_ADDR pc = get_frame_pc (this_frame);
   gdb_byte buf[LINUX_SIGTRAMP_LEN];
 
   /* We only recognize a signal trampoline if PC is at the start of
@@ -100,7 +102,7 @@ amd64_linux_sigtramp_start (struct frame_info *next_frame)
      PC is not at the start of the instruction sequence, there will be
      a few trailing readable bytes on the stack.  */
 
-  if (!safe_frame_unwind_memory (next_frame, pc, buf, sizeof buf))
+  if (!safe_frame_unwind_memory (this_frame, pc, buf, sizeof buf))
     return 0;
 
   if (buf[0] != LINUX_SIGTRAMP_INSN0)
@@ -109,7 +111,7 @@ amd64_linux_sigtramp_start (struct frame_info *next_frame)
        return 0;
 
       pc -= LINUX_SIGTRAMP_OFFSET1;
-      if (!safe_frame_unwind_memory (next_frame, pc, buf, sizeof buf))
+      if (!safe_frame_unwind_memory (this_frame, pc, buf, sizeof buf))
        return 0;
     }
 
@@ -119,13 +121,13 @@ amd64_linux_sigtramp_start (struct frame_info *next_frame)
   return pc;
 }
 
-/* Return whether the frame preceding NEXT_FRAME corresponds to a
-   GNU/Linux sigtramp routine.  */
+/* Return whether THIS_FRAME corresponds to a GNU/Linux sigtramp
+   routine.  */
 
 static int
-amd64_linux_sigtramp_p (struct frame_info *next_frame)
+amd64_linux_sigtramp_p (struct frame_info *this_frame)
 {
-  CORE_ADDR pc = frame_pc_unwind (next_frame);
+  CORE_ADDR pc = get_frame_pc (this_frame);
   char *name;
 
   find_pc_partial_function (pc, &name, NULL, NULL);
@@ -137,7 +139,7 @@ amd64_linux_sigtramp_p (struct frame_info *next_frame)
      __sigaction, or __libc_sigaction (all aliases to the same
      function).  */
   if (name == NULL || strstr (name, "sigaction") != NULL)
-    return (amd64_linux_sigtramp_start (next_frame) != 0);
+    return (amd64_linux_sigtramp_start (this_frame) != 0);
 
   return (strcmp ("__restore_rt", name) == 0);
 }
@@ -145,18 +147,19 @@ amd64_linux_sigtramp_p (struct frame_info *next_frame)
 /* Offset to struct sigcontext in ucontext, from <asm/ucontext.h>.  */
 #define AMD64_LINUX_UCONTEXT_SIGCONTEXT_OFFSET 40
 
-/* Assuming NEXT_FRAME is a frame following a GNU/Linux sigtramp
-   routine, return the address of the associated sigcontext structure.  */
+/* Assuming THIS_FRAME is a GNU/Linux sigtramp routine, return the
+   address of the associated sigcontext structure.  */
 
 static CORE_ADDR
-amd64_linux_sigcontext_addr (struct frame_info *next_frame)
+amd64_linux_sigcontext_addr (struct frame_info *this_frame)
 {
+  struct gdbarch *gdbarch = get_frame_arch (this_frame);
+  enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
   CORE_ADDR sp;
   gdb_byte buf[8];
 
-  frame_unwind_register (next_frame,
-                        gdbarch_sp_regnum (get_frame_arch (next_frame)), buf);
-  sp = extract_unsigned_integer (buf, 8);
+  get_frame_register (this_frame, AMD64_RSP_REGNUM, buf);
+  sp = extract_unsigned_integer (buf, 8, byte_order);
 
   /* The sigcontext structure is part of the user context.  A pointer
      to the user context is passed as the third argument to the signal
@@ -205,19 +208,19 @@ static int amd64_linux_sc_reg_offset[] =
 /* Replacement register functions which know about %orig_rax.  */
 
 static const char *
-amd64_linux_register_name (int reg)
+amd64_linux_register_name (struct gdbarch *gdbarch, int reg)
 {
   if (reg == AMD64_LINUX_ORIG_RAX_REGNUM)
     return "orig_rax";
 
-  return amd64_register_name (reg);
+  return amd64_register_name (gdbarch, reg);
 }
 
 static struct type *
 amd64_linux_register_type (struct gdbarch *gdbarch, int reg)
 {
   if (reg == AMD64_LINUX_ORIG_RAX_REGNUM)
-    return builtin_type_int64;
+    return builtin_type (gdbarch)->builtin_int64;
 
   return amd64_register_type (gdbarch, reg);
 }
@@ -287,6 +290,17 @@ amd64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   /* Enable TLS support.  */
   set_gdbarch_fetch_tls_load_module_address (gdbarch,
                                              svr4_fetch_objfile_link_map);
+
+  /* Displaced stepping.  */
+  set_gdbarch_displaced_step_copy_insn (gdbarch,
+                                        amd64_displaced_step_copy_insn);
+  set_gdbarch_displaced_step_fixup (gdbarch, amd64_displaced_step_fixup);
+  set_gdbarch_displaced_step_free_closure (gdbarch,
+                                           simple_displaced_step_free_closure);
+  set_gdbarch_displaced_step_location (gdbarch,
+                                       displaced_step_at_entry_point);
+
+  set_gdbarch_get_siginfo_type (gdbarch, linux_get_siginfo_type);
 }
 \f