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Provide a non-EHABI version of the mcount glue.

This commit is contained in:
joerg 2014-05-11 02:02:14 +00:00
parent 58ced3d761
commit c8a1f8aef9
1 changed files with 42 additions and 1 deletions
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43
sys/arch/arm/include/profile.h
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@ -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"); \