66 lines
1.7 KiB
C
66 lines
1.7 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0-only */
|
||
|
|
#ifndef __ASM_ASM_EXTABLE_H
|
||
|
|
#define __ASM_ASM_EXTABLE_H
|
||
|
|
|
||
|
|
#define EX_TYPE_NONE 0
|
||
|
|
#define EX_TYPE_FIXUP 1
|
||
|
|
#define EX_TYPE_BPF 2
|
||
|
|
#define EX_TYPE_UACCESS_ERR_ZERO 3
|
||
|
|
|
||
|
|
#ifdef __ASSEMBLY__
|
||
|
|
|
||
|
|
#define __ASM_EXTABLE_RAW(insn, fixup, type, data) \
|
||
|
|
.pushsection __ex_table, "a"; \
|
||
|
|
.balign 4; \
|
||
|
|
.long ((insn) - .); \
|
||
|
|
.long ((fixup) - .); \
|
||
|
|
.short (type); \
|
||
|
|
.short (data); \
|
||
|
|
.popsection;
|
||
|
|
|
||
|
|
.macro _asm_extable, insn, fixup
|
||
|
|
__ASM_EXTABLE_RAW(\insn, \fixup, EX_TYPE_FIXUP, 0)
|
||
|
|
.endm
|
||
|
|
|
||
|
|
#else /* __ASSEMBLY__ */
|
||
|
|
|
||
|
|
#include <linux/bits.h>
|
||
|
|
#include <linux/stringify.h>
|
||
|
|
#include <asm/gpr-num.h>
|
||
|
|
|
||
|
|
#define __ASM_EXTABLE_RAW(insn, fixup, type, data) \
|
||
|
|
".pushsection __ex_table, \"a\"\n" \
|
||
|
|
".balign 4\n" \
|
||
|
|
".long ((" insn ") - .)\n" \
|
||
|
|
".long ((" fixup ") - .)\n" \
|
||
|
|
".short (" type ")\n" \
|
||
|
|
".short (" data ")\n" \
|
||
|
|
".popsection\n"
|
||
|
|
|
||
|
|
#define _ASM_EXTABLE(insn, fixup) \
|
||
|
|
__ASM_EXTABLE_RAW(#insn, #fixup, __stringify(EX_TYPE_FIXUP), "0")
|
||
|
|
|
||
|
|
#define EX_DATA_REG_ERR_SHIFT 0
|
||
|
|
#define EX_DATA_REG_ERR GENMASK(4, 0)
|
||
|
|
#define EX_DATA_REG_ZERO_SHIFT 5
|
||
|
|
#define EX_DATA_REG_ZERO GENMASK(9, 5)
|
||
|
|
|
||
|
|
#define EX_DATA_REG(reg, gpr) \
|
||
|
|
"((.L__gpr_num_" #gpr ") << " __stringify(EX_DATA_REG_##reg##_SHIFT) ")"
|
||
|
|
|
||
|
|
#define _ASM_EXTABLE_UACCESS_ERR_ZERO(insn, fixup, err, zero) \
|
||
|
|
__DEFINE_ASM_GPR_NUMS \
|
||
|
|
__ASM_EXTABLE_RAW(#insn, #fixup, \
|
||
|
|
__stringify(EX_TYPE_UACCESS_ERR_ZERO), \
|
||
|
|
"(" \
|
||
|
|
EX_DATA_REG(ERR, err) " | " \
|
||
|
|
EX_DATA_REG(ZERO, zero) \
|
||
|
|
")")
|
||
|
|
|
||
|
|
#define _ASM_EXTABLE_UACCESS_ERR(insn, fixup, err) \
|
||
|
|
_ASM_EXTABLE_UACCESS_ERR_ZERO(insn, fixup, err, zero)
|
||
|
|
|
||
|
|
#endif /* __ASSEMBLY__ */
|
||
|
|
|
||
|
|
#endif /* __ASM_ASM_EXTABLE_H */
|