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https://github.com/cirosantilli/linux-kernel-module-cheat.git
synced 2026-01-23 02:05:57 +01:00
c8c4f89854
Previously had wonky line pointer in asm_main. New interface simpler and more portable. Add tests for ASSERT_EQ_ and family in arm and aarch64, previously on x86_64. ASSERT_EQ_ and family in ARM can now either take =123, =addr or var, before this the = was added on macros so var was not possible. Define the main function directly in assembly, the C driver was useless.
29 lines
491 B
ArmAsm
29 lines
491 B
ArmAsm
/* https://github.com/cirosantilli/linux-kernel-module-cheat#armv8-aarch64-ret-instruction */
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#include <lkmc.h>
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LKMC_PROLOGUE
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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_EPILOGUE
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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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