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18 lines
330 B
ArmAsm
18 lines
330 B
ArmAsm
/* https://github.com/cirosantilli/linux-kernel-module-cheat#data-bitwise-instructions */
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#include "common.h"
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LKMC_ENTRY
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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_EXIT
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