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18 lines
337 B
ArmAsm
18 lines
337 B
ArmAsm
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-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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