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29 lines
483 B
ArmAsm
29 lines
483 B
ArmAsm
/* https://github.com/cirosantilli/linux-kernel-module-cheat#armv8-aarch64-ret-instruction */
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#include "common.h"
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LKMC_ENTRY
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mov x19, 1
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bl inc
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LKMC_ASSERT_EQ(x19, 2)
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bl inc2
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LKMC_ASSERT_EQ(x19, 3)
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bl inc3
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LKMC_ASSERT_EQ(x19, 4)
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LKMC_EXIT
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/* void inc(uint64_t *i) { (*i)++ } */
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inc:
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add x19, x19, 1
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ret
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/* Same but explicit return register. */
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inc2:
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add x19, x19, 1
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ret x30
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/* Same but with br. */
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inc3:
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add x19, x19, 1
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br x30
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