Update mn10300 dwarf register map

[deliverable/binutils-gdb.git] / gdb / i386-tdep.c

diff --git a/gdb/i386-tdep.c b/gdb/i386-tdep.c
index 9d1d9e0ad5611b799a3cab1f9df36c9f5896534f..57f18cbab8d43505c8f3078ec5bbc1d284f55ed2 100644 (file)
--- a/gdb/i386-tdep.c
+++ b/gdb/i386-tdep.c
@@ -530,6 +530,22 @@ i386_absolute_jmp_p (const gdb_byte *insn)
   return 0;
 }
 
+/* Return non-zero if INSN is a jump, zero otherwise.  */
+
+static int
+i386_jmp_p (const gdb_byte *insn)
+{
+  /* jump short, relative.  */
+  if (insn[0] == 0xeb)
+    return 1;
+
+  /* jump near, relative.  */
+  if (insn[0] == 0xe9)
+    return 1;
+
+  return i386_absolute_jmp_p (insn);
+}
+
 static int
 i386_absolute_call_p (const gdb_byte *insn)
 {
@@ -601,6 +617,45 @@ i386_syscall_p (const gdb_byte *insn, int *lengthp)
   return 0;
 }
 
+/* The gdbarch insn_is_call method.  */
+
+static int
+i386_insn_is_call (struct gdbarch *gdbarch, CORE_ADDR addr)
+{
+  gdb_byte buf[I386_MAX_INSN_LEN], *insn;
+
+  read_code (addr, buf, I386_MAX_INSN_LEN);
+  insn = i386_skip_prefixes (buf, I386_MAX_INSN_LEN);
+
+  return i386_call_p (insn);
+}
+
+/* The gdbarch insn_is_ret method.  */
+
+static int
+i386_insn_is_ret (struct gdbarch *gdbarch, CORE_ADDR addr)
+{
+  gdb_byte buf[I386_MAX_INSN_LEN], *insn;
+
+  read_code (addr, buf, I386_MAX_INSN_LEN);
+  insn = i386_skip_prefixes (buf, I386_MAX_INSN_LEN);
+
+  return i386_ret_p (insn);
+}
+
+/* The gdbarch insn_is_jump method.  */
+
+static int
+i386_insn_is_jump (struct gdbarch *gdbarch, CORE_ADDR addr)
+{
+  gdb_byte buf[I386_MAX_INSN_LEN], *insn;
+
+  read_code (addr, buf, I386_MAX_INSN_LEN);
+  insn = i386_skip_prefixes (buf, I386_MAX_INSN_LEN);
+
+  return i386_jmp_p (insn);
+}
+
 /* Some kernels may run one past a syscall insn, so we have to cope.
    Otherwise this is just simple_displaced_step_copy_insn.  */
 
@@ -7819,7 +7874,7 @@ i386_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
     return arches->gdbarch;
 
   /* Allocate space for the new architecture.  */
-  tdep = XCALLOC (1, struct gdbarch_tdep);
+  tdep = XCNEW (struct gdbarch_tdep);
   gdbarch = gdbarch_alloc (&info, tdep);
 
   /* General-purpose registers.  */
@@ -8017,6 +8072,10 @@ i386_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
 
   set_gdbarch_gen_return_address (gdbarch, i386_gen_return_address);
 
+  set_gdbarch_insn_is_call (gdbarch, i386_insn_is_call);
+  set_gdbarch_insn_is_ret (gdbarch, i386_insn_is_ret);
+  set_gdbarch_insn_is_jump (gdbarch, i386_insn_is_jump);
+
   /* Hook in ABI-specific overrides, if they have been registered.  */
   info.tdep_info = (void *) tdesc_data;
   gdbarch_init_osabi (info, gdbarch);