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- /* https://cirosantilli.com/linux-kernel-module-cheat#arm-ubfm-instruction */
- #include <lkmc.h>
- LKMC_PROLOGUE
- ldr x19, =0x1122334455667788
- // lsr alias: imms == 63
- ldr x20, =0xFFFFFFFFFFFFFFFF
- ubfm x20, x19, 16, 63
- LKMC_ASSERT_EQ(x20, =0x0000112233445566)
- ldr x20, =0xFFFFFFFFFFFFFFFF
- ubfm x20, x19, 32, 63
- LKMC_ASSERT_EQ(x20, =0x0000000011223344)
- LKMC_EPILOGUE
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