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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.
28 lines
592 B
ArmAsm
28 lines
592 B
ArmAsm
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-loop-instruction-over-array */
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#include <lkmc.h>
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#define NELEM 4
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#define ELEM_SIZE 4
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.data;
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my_array:
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.word 0x11111111, 0x22222222, 0x33333333, 0x44444444
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my_array_expect:
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.word 0x11111112, 0x22222223, 0x33333334, 0x44444445
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LKMC_PROLOGUE
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/* Increment. */
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ldr r0, =my_array
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mov r1, NELEM
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increment:
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ldr r2, [r0]
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add r2, 1
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/* Post index usage. */
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str r2, [r0], ELEM_SIZE
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sub r1, 1
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cmp r1, 0
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bne increment
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LKMC_ASSERT_MEMCMP(my_array, my_array_expect, =0x10)
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LKMC_EPILOGUE
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