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26 lines
541 B
ArmAsm
26 lines
541 B
ArmAsm
/* https://cirosantilli.com/linux-kernel-module-cheat#x86-string-instructions */
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#include <lkmc.h>
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.section .rodata
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my_quad_array: .quad 1, 2
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LKMC_PROLOGUE
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mov $0, %r12
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mov $0, %r13
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/* RDI holds the address. */
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lea my_quad_array(%rip), %rdi
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cld
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mov $1, %rax
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/* Compare RAX to *RDI (1 == 1) */
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scasq
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setz %r12b
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mov $3, %rax
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/* Compare RAX to *RDI (3 == 2) */
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scasq
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setz %r13b
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/* 1 == 1 */
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LKMC_ASSERT_EQ(%r12, $1)
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/* 2 != 3 */
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LKMC_ASSERT_EQ(%r13, $0)
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LKMC_EPILOGUE
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