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

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 9fc2a98f50a839daa779cbd42b306a747607807e..f3ce56fa5701d05dfa62a339ca68c43929092f24 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+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

diff --git a/gcc/config/arm/bpabi.h b/gcc/config/arm/bpabi.h
index 38be1da261a2b1ecebf6fc4d2e565782bc6ad920..c8cdc3db087a59d5ef296352110adf514df8a0c4 100644 (file)
--- a/gcc/config/arm/bpabi.h
+++ b/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