mirror of
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.
18 lines
338 B
ArmAsm
18 lines
338 B
ArmAsm
/* https://github.com/cirosantilli/linux-kernel-module-cheat#data-bitwise-instructions */
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#include <lkmc.h>
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LKMC_PROLOGUE
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ldr r0, =0x7FFFFFFF
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clz r1, r0
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LKMC_ASSERT_EQ(r1, =1)
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ldr r0, =0x3FFFFFFF
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clz r1, r0
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LKMC_ASSERT_EQ(r1, =2)
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ldr r0, =0x1FFFFFFF
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clz r1, r0
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LKMC_ASSERT_EQ(r1, =3)
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LKMC_EPILOGUE
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