`

        * mn10300.h (DEBUGGER_AUTO_OFFSET): Define.
        (DEBUGGER_ARG_OFFSET): Likewise.
        * mn10300.md (movsf): Remove last change.  Not needed.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@21415 138bc75d-0d04-0410-961f-82ee72b054a4

2 files changed, 23 insertions, 8 deletions

diff --git a/gcc/config/mn10300/mn10300.h b/gcc/config/mn10300/mn10300.h
index 938561cff36..3e03a4b50b0 100644
--- a/gcc/config/mn10300/mn10300.h
+++ b/gcc/config/mn10300/mn10300.h
@@ -954,6 +954,29 @@ do { char dstr[30];					\
 
 #define DBX_REGISTER_NUMBER(REGNO) REGNO
 
+/* GDB always assumes the current function's frame begins at the value
+   of the stack pointer upon entry to the current function.  Accessing
+   local variables and parameters passed on the stack is done using the
+   base of the frame + an offset provided by GCC.
+
+   For functions which have frame pointers this method works fine;
+   the (frame pointer) == (stack pointer at function entry) and GCC provides
+   an offset relative to the frame pointer.
+
+   This loses for functions without a frame pointer; GCC provides an offset
+   which is relative to the stack pointer after adjusting for the function's
+   frame size.  GDB would prefer the offset to be relative to the value of
+   the stack pointer at the function's entry.  Yuk!  */
+#define DEBUGGER_AUTO_OFFSET(X) \
+  ((GET_CODE (X) == PLUS ? INTVAL (XEXP (X, 1)) : 0) \
+    + (frame_pointer_needed \
+       ? 0 : -initial_offset (FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM)))
+
+#define DEBUGGER_ARG_OFFSET(OFFSET, X) \
+  ((GET_CODE (X) == PLUS ? OFFSET : 0) \
+    + (frame_pointer_needed \
+       ? 0 : -initial_offset (ARG_POINTER_REGNUM, STACK_POINTER_REGNUM)))
+
 /* Define to use software floating point emulator for REAL_ARITHMETIC and
    decimal <-> binary conversion. */
 #define REAL_ARITHMETIC
diff --git a/gcc/config/mn10300/mn10300.md b/gcc/config/mn10300/mn10300.md
index e10df8aff22..a0d06522077 100644
--- a/gcc/config/mn10300/mn10300.md
+++ b/gcc/config/mn10300/mn10300.md
@@ -318,14 +318,6 @@
       /* FALLTHROUGH */
     case 4:
     case 5:
-      if (GET_CODE (operands[1]) == CONST_DOUBLE)
-	{
-	  rtx xoperands[2];
-	  xoperands[0] = operands[0];
-	  xoperands[1] = GEN_INT (CONST_DOUBLE_LOW (operands[1]));
-	  output_asm_insn (\"mov %1,%0\", xoperands);
-	  return \"\";
-	}
       return \"mov %1,%0\";
     }
 }"