* config/m68k/m68k.h (REGISTER_NAMES): Prefix each name with

	REGISTER_PREFIX.
	* (M68K_FP_REG_NAME): New macro to specify an alternate name for the
	frame pointer register, overridable by OS targets.
	* (M68K_REGNAME): Macro to obtain register name for asm output,
	eventually replacing %a6 with M68K_FP_REG_NAME.
	* config/m68k/coff.h (REGISTER_NAMES): Don't redefine.
	* config/m68k/linux.h (REGISTER_NAMES): Likewise.
	* config/m68k/m68kelf.h (REGISTER_NAMES): Likewise.
	* config/m68k/netbsd-elf.h (REGISTER_NAMES): Likewise.
	* config/m68k/m68k.c: Use M68K_REGNAME(x) in place of reg_names[x].

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@77511 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/config/m68k/m68k.h b/gcc/config/m68k/m68k.h
index b65315e..6f05bec 100644 (file)
--- a/gcc/config/m68k/m68k.h
+++ b/gcc/config/m68k/m68k.h
@@ -1458,9 +1458,26 @@ do { if (cc_prev_status.flags & CC_IN_68881)                     \
    This sequence is indexed by compiler's hard-register-number (see above).  */
 
 #define REGISTER_NAMES \
-{"d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7",       \
- "a0", "a1", "a2", "a3", "a4", "a5", "a6", "sp",       \
- "fp0", "fp1", "fp2", "fp3", "fp4", "fp5", "fp6", "fp7", "argptr" }
+{REGISTER_PREFIX"d0", REGISTER_PREFIX"d1", REGISTER_PREFIX"d2",        \
+ REGISTER_PREFIX"d3", REGISTER_PREFIX"d4", REGISTER_PREFIX"d5",        \
+ REGISTER_PREFIX"d6", REGISTER_PREFIX"d7",                     \
+ REGISTER_PREFIX"a0", REGISTER_PREFIX"a1", REGISTER_PREFIX"a2", \
+ REGISTER_PREFIX"a3", REGISTER_PREFIX"a4", REGISTER_PREFIX"a5", \
+ REGISTER_PREFIX"a6", REGISTER_PREFIX"sp",                     \
+ REGISTER_PREFIX"fp0", REGISTER_PREFIX"fp1", REGISTER_PREFIX"fp2", \
+ REGISTER_PREFIX"fp3", REGISTER_PREFIX"fp4", REGISTER_PREFIX"fp5", \
+ REGISTER_PREFIX"fp6", REGISTER_PREFIX"fp7", REGISTER_PREFIX"argptr" }
+
+#define M68K_FP_REG_NAME REGISTER_PREFIX"fp"
+
+/* Return a register name by index, handling %fp nicely.
+   We don't replace %fp for targets that don't map it to %a6
+   since it may confuse GAS.  */
+#define M68K_REGNAME(r) ( \
+  ((FRAME_POINTER_REGNUM == 14) \
+    && ((r) == FRAME_POINTER_REGNUM) \
+    && frame_pointer_needed) ? \
+    M68K_FP_REG_NAME : reg_names[(r)])
 
 /* How to renumber registers for dbx and gdb.
    On the Sun-3, the floating point registers have numbers