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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.
23 lines
443 B
ArmAsm
23 lines
443 B
ArmAsm
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-data-processing-instructions
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*
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* Test. Same as ands, but don't store the result, just update flags.
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*/
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#include <lkmc.h>
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LKMC_PROLOGUE
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/* 0x0F && 0xF0 == 0x00, so beq. */
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mov r0, 0x0F
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tst r0, 0xF0
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LKMC_ASSERT(beq)
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/* bne */
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mov r0, 0xFF
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tst r0, 0x0F
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LKMC_ASSERT(bne)
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# r0 was not modified.
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LKMC_ASSERT_EQ(r0, =0xFF)
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LKMC_EPILOGUE
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