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https://github.com/cirosantilli/linux-kernel-module-cheat.git
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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
406 B
ArmAsm
18 lines
406 B
ArmAsm
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-ubfm-instruction */
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#include <lkmc.h>
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LKMC_PROLOGUE
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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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LKMC_ASSERT_EQ(x20, =0x0000112233445566)
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ldr x20, =0xFFFFFFFFFFFFFFFF
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ubfm x20, x19, 32, 63
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LKMC_ASSERT_EQ(x20, =0x0000000011223344)
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LKMC_EPILOGUE
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