mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-21 16:07:57 +07:00
5a205a32ff
1. detect whether binutils supports the cfi pseudo ops
2. define conditional macros to generate the ops
3. define new ENTRY_CFI/END_CFI to annotate hand asm code.
- Needed because we don't want to emit dwarf info in general ENTRY/END
used by lowest level trap/exception/interrutp handlers as unwinder
gets confused trying to unwind out of them. We want unwinder to
instead stop when it hits onfo those routines
- These provide minimal start/end cfi ops assuming routine doesn't
touch stack memory/regs
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
64 lines
1.4 KiB
C
64 lines
1.4 KiB
C
/*
|
|
* Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#ifndef __ASM_LINKAGE_H
|
|
#define __ASM_LINKAGE_H
|
|
|
|
#include <asm/dwarf.h>
|
|
|
|
#ifdef __ASSEMBLY__
|
|
|
|
#define ASM_NL ` /* use '`' to mark new line in macro */
|
|
|
|
/* annotation for data we want in DCCM - if enabled in .config */
|
|
.macro ARCFP_DATA nm
|
|
#ifdef CONFIG_ARC_HAS_DCCM
|
|
.section .data.arcfp
|
|
#else
|
|
.section .data
|
|
#endif
|
|
.global \nm
|
|
.endm
|
|
|
|
/* annotation for data we want in DCCM - if enabled in .config */
|
|
.macro ARCFP_CODE
|
|
#ifdef CONFIG_ARC_HAS_ICCM
|
|
.section .text.arcfp, "ax",@progbits
|
|
#else
|
|
.section .text, "ax",@progbits
|
|
#endif
|
|
.endm
|
|
|
|
#define ENTRY_CFI(name) \
|
|
.globl name ASM_NL \
|
|
ALIGN ASM_NL \
|
|
name: ASM_NL \
|
|
CFI_STARTPROC ASM_NL
|
|
|
|
#define END_CFI(name) \
|
|
CFI_ENDPROC ASM_NL \
|
|
.size name, .-name
|
|
|
|
#else /* !__ASSEMBLY__ */
|
|
|
|
#ifdef CONFIG_ARC_HAS_ICCM
|
|
#define __arcfp_code __attribute__((__section__(".text.arcfp")))
|
|
#else
|
|
#define __arcfp_code __attribute__((__section__(".text")))
|
|
#endif
|
|
|
|
#ifdef CONFIG_ARC_HAS_DCCM
|
|
#define __arcfp_data __attribute__((__section__(".data.arcfp")))
|
|
#else
|
|
#define __arcfp_data __attribute__((__section__(".data")))
|
|
#endif
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#endif
|