Module Name: src
Committed By: joerg
Date: Sun May 11 02:02:14 UTC 2014
Modified Files:
src/sys/arch/arm/include: profile.h
Log Message:
Provide a non-EHABI version of the mcount glue.
To generate a diff of this commit:
cvs rdiff -u -r1.13 -r1.14 src/sys/arch/arm/include/profile.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/arm/include/profile.h
diff -u src/sys/arch/arm/include/profile.h:1.13 src/sys/arch/arm/include/profile.h:1.14
--- src/sys/arch/arm/include/profile.h:1.13 Sat Nov 30 21:07:59 2013
+++ src/sys/arch/arm/include/profile.h Sun May 11 02:02:14 2014
@@ -1,4 +1,4 @@
-/* $NetBSD: profile.h,v 1.13 2013/11/30 21:07:59 joerg Exp $ */
+/* $NetBSD: profile.h,v 1.14 2014/05/11 02:02:14 joerg Exp $ */
/*
* Copyright (c) 2001 Ben Harris
@@ -78,6 +78,47 @@
*/ \
__asm("pop {r0-r3, pc}"); \
__asm(".size " MCOUNT_ASM_NAME ", .-" MCOUNT_ASM_NAME);
+#elif defined(__ARM_DWARF_EH__)
+#define MCOUNT \
+ __asm(".text"); \
+ __asm(".align 0"); \
+ __asm(".arm"); \
+ __asm(".type " MCOUNT_ASM_NAME ",%function"); \
+ __asm(".global " MCOUNT_ASM_NAME); \
+ __asm(MCOUNT_ASM_NAME ":"); \
+ __asm(".cfi_startproc"); \
+ /* \
+ * Preserve registers that are trashed during mcount \
+ */ \
+ __asm("push {r0-r4, ip, lr}"); \
+ __asm(".cfi_def_cfa_offset 24"); \
+ __asm(".cfi_offset 14, -4"); \
+ __asm(".cfi_offset 4, -8"); \
+ __asm(".cfi_offset 3, -12"); \
+ __asm(".cfi_offset 2, -16"); \
+ __asm(".cfi_offset 1, -20"); \
+ __asm(".cfi_offset 0, -24"); \
+ /* \
+ * find the return address for mcount, \
+ * and the return address for mcount's caller. \
+ * \
+ * frompcindex = pc pushed by call into self. \
+ */ \
+ __asm("mov r0, ip"); \
+ /* \
+ * selfpc = pc pushed by mcount call \
+ */ \
+ __asm("mov r1, lr"); \
+ /* \
+ * Call the real mcount code \
+ */ \
+ __asm("bl " ___STRING(_C_LABEL(_mcount)) PLTSYM); \
+ /* \
+ * Restore registers that were trashed during mcount \
+ */ \
+ __asm("pop {r0-r4, lr, pc}"); \
+ __asm(".cfi_endproc"); \
+ __asm(".size " MCOUNT_ASM_NAME ", .-" MCOUNT_ASM_NAME);
#else
#define MCOUNT \
__asm(".text"); \
