Don't call mexitcount or provide a stub mexitcount to call when

profiling is configured but high resolution profiling is not configured.
Only functions in *.[Ss] called the stub, so efficiency was not
significantly affected.

sys/amd64/amd64/prof_machdep.c

@@ -375,17 +375,4 @@ stopguprof(gp)
 	}
 #endif
 }
-
-#else /* !GUPROF */
-#ifdef __GNUCLIKE_ASM
-__asm("								\n\
-	.text							\n\
-	.p2align 4,0x90						\n\
-	.globl	" __XSTRING(HIDENAME(mexitcount)) "		\n\
-" __XSTRING(HIDENAME(mexitcount)) ":				\n\
-	ret							\n\
-");
-#else /* !__GNUCLIKE_ASM */
-#error this file needs to be ported to your compiler
-#endif /* __GNUCLIKE_ASM */
 #endif /* GUPROF */

sys/amd64/include/asmacros.h

@@ -108,8 +108,12 @@
 #define FAKE_MCOUNT(caller)	pushq caller ; call __mcount ; popq %rcx
 #define MCOUNT			call __mcount
 #define MCOUNT_LABEL(name)	GEN_ENTRY(name) ; nop ; ALIGN_TEXT
+#ifdef GUPROF
 #define MEXITCOUNT		call HIDENAME(mexitcount)
 #define ret			MEXITCOUNT ; NON_GPROF_RET
+#else
+#define MEXITCOUNT
+#endif
 
 #else /* !GPROF */
 /*

sys/i386/include/asmacros.h

@@ -108,8 +108,12 @@
 #define FAKE_MCOUNT(caller)	pushl caller ; call __mcount ; popl %ecx
 #define MCOUNT			call __mcount
 #define MCOUNT_LABEL(name)	GEN_ENTRY(name) ; nop ; ALIGN_TEXT
+#ifdef GUPROF
 #define MEXITCOUNT		call HIDENAME(mexitcount)
 #define ret			MEXITCOUNT ; NON_GPROF_RET
+#else
+#define MEXITCOUNT
+#endif
 
 #else /* !GPROF */
 /*

sys/i386/isa/prof_machdep.c

@@ -349,15 +349,4 @@ stopguprof(gp)
 	}
 #endif
 }
-
-#else /* !GUPROF */
-#ifdef __GNUCLIKE_ASM
-__asm("								\n\
-	.text							\n\
-	.p2align 4,0x90						\n\
-	.globl	" __XSTRING(HIDENAME(mexitcount)) "		\n\
-" __XSTRING(HIDENAME(mexitcount)) ":				\n\
-	ret							\n\
-");
-#endif /* __GNUCLIKE_ASM */
 #endif /* GUPROF */