mirror of
https://github.com/cirosantilli/linux-kernel-module-cheat.git
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f176d04500
aarch64 basically done, but missing: - other archs - maybe convert main.c into C++ to use templates? - full review of ASSERT_EQ calling convention issues not seen by tests by chance - documentation
18 lines
356 B
ArmAsm
18 lines
356 B
ArmAsm
/* https://github.com/cirosantilli/arm-assembly-cheat#ubfm */
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#include "common.h"
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ENTRY
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ldr x19, =0x1122334455667788
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// lsr alias: imms == 63
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ldr x20, =0xFFFFFFFFFFFFFFFF
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ubfm x20, x19, 16, 63
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ASSERT_EQ(x20, 0x0000112233445566)
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ldr x20, =0xFFFFFFFFFFFFFFFF
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ubfm x20, x19, 32, 63
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ASSERT_EQ(x20, 0x0000000011223344)
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EXIT
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