bpabi.h (ARM_FUNCTION_PROFILER): Define new EABI compatible profiler (__gnu_mcount_nc).

2008-10-08  Paul Brook  <paul@codesourcery.com>

	gcc/
	* config/arm/bpabi.h (ARM_FUNCTION_PROFILER): Define new EABI
	compatible profiler (__gnu_mcount_nc).
	(SUBTARGET_FRAME_POINTER_REQUIRED): Define.

From-SVN: r140974

gcc/ChangeLog

+2008-10-08  Paul Brook  <paul@codesourcery.com>
+
+	* config/arm/bpabi.h (ARM_FUNCTION_PROFILER): Define new EABI
+	compatible profiler (__gnu_mcount_nc).
+	(SUBTARGET_FRAME_POINTER_REQUIRED): Define.
+
 2008-10-08  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* config/i386/i386.c (initial_ix86_tune_features): Add

gcc/config/arm/bpabi.h

@@ -147,3 +147,20 @@
 #undef FINI_SECTION_ASM_OP
 #define INIT_ARRAY_SECTION_ASM_OP ARM_EABI_CTORS_SECTION_OP
 #define FINI_ARRAY_SECTION_ASM_OP ARM_EABI_DTORS_SECTION_OP
+
+/* The legacy _mcount implementation assumes r11 points to a
+    4-word APCS frame.  This is generally not true for EABI targets,
+    particularly not in Thumb mode.  We assume the mcount
+    implementation does not require a counter variable (No Counter).
+    Note that __gnu_mcount_nc will be entered with a misaligned stack.
+    This is OK because it uses a special calling convention anyway.  */
+
+#undef  ARM_FUNCTION_PROFILER
+#define ARM_FUNCTION_PROFILER(STREAM, LABELNO)  			\
+{									\
+  fprintf (STREAM, "\tpush\t{lr}\n");					\
+  fprintf (STREAM, "\tbl\t__gnu_mcount_nc\n");				\
+}
+
+#undef SUBTARGET_FRAME_POINTER_REQUIRED
+#define SUBTARGET_FRAME_POINTER_REQUIRED 0