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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _MCSAFE_TEST_H_
#define _MCSAFE_TEST_H_
#ifndef __ASSEMBLY__
#ifdef CONFIG_MCSAFE_TEST
extern unsigned long mcsafe_test_src;
extern unsigned long mcsafe_test_dst;
static inline void mcsafe_inject_src(void *addr)
{
if (addr)
mcsafe_test_src = (unsigned long) addr;
else
mcsafe_test_src = ~0UL;
}
static inline void mcsafe_inject_dst(void *addr)
{
if (addr)
mcsafe_test_dst = (unsigned long) addr;
else
mcsafe_test_dst = ~0UL;
}
#else /* CONFIG_MCSAFE_TEST */
static inline void mcsafe_inject_src(void *addr)
{
}
static inline void mcsafe_inject_dst(void *addr)
{
}
#endif /* CONFIG_MCSAFE_TEST */
#else /* __ASSEMBLY__ */
#include <asm/export.h>
#ifdef CONFIG_MCSAFE_TEST
.macro MCSAFE_TEST_CTL
.pushsection .data
.align 8
.globl mcsafe_test_src
mcsafe_test_src:
.quad 0
EXPORT_SYMBOL_GPL(mcsafe_test_src)
.globl mcsafe_test_dst
mcsafe_test_dst:
.quad 0
EXPORT_SYMBOL_GPL(mcsafe_test_dst)
.popsection
.endm
.macro MCSAFE_TEST_SRC reg count target
leaq \count(\reg), %r9
cmp mcsafe_test_src, %r9
ja \target
.endm
.macro MCSAFE_TEST_DST reg count target
leaq \count(\reg), %r9
cmp mcsafe_test_dst, %r9
ja \target
.endm
#else
.macro MCSAFE_TEST_CTL
.endm
.macro MCSAFE_TEST_SRC reg count target
.endm
.macro MCSAFE_TEST_DST reg count target
.endm
#endif /* CONFIG_MCSAFE_TEST */
#endif /* __ASSEMBLY__ */
#endif /* _MCSAFE_TEST_H_ */