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78 lines
4.3 KiB
C
78 lines
4.3 KiB
C
/* https://cirosantilli.com/linux-kernel-module-cheat#m5ops-instructions */
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#ifndef LKMC_M5OPS_H
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#define LKMC_M5OPS_H
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#if LKMC_M5OPS_ENABLE
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#if defined(__x86_64__)
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/* 0x43 is the identifier for CHECKPOINT on all archs.
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*
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* 0x040F is the magic x86 undefined instruction boilerplate to which the identifier gets added.
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*
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* D means RDI which is the first argument of a Linux C function call,
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* and S means RSI is the second one: these are also used by gem5 as arguments of the m5ops.
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*/
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#define LKMC_M5OPS_CHECKPOINT_ASM mov $0, %%rdi; mov $0, %%rsi; .word 0x040F; .word 0x0043
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#define LKMC_M5OPS_DUMPSTATS_ASM mov $0, %%rdi; mov $0, %%rsi; .word 0x040F; .word 0x0041
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#define LKMC_M5OPS_EXIT_ASM mov $0, %%rdi; .word 0x040F; .word 0x0021
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#define LKMC_M5OPS_FAIL_1_ASM mov $0, %%rdi; mov $1, %%rsi; .word 0x040F; .word 0x0022
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#define LKMC_M5OPS_RESETSTATS_ASM mov $0, %%rdi; mov $0, %%rsi; .word 0x040F; .word 0x0040
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#define LKMC_M5OPS_CHECKPOINT __asm__ __volatile__ (".word 0x040F; .word 0x0043;" : : "D" (0), "S" (0) :)
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#define LKMC_M5OPS_DUMPSTATS __asm__ __volatile__ (".word 0x040F; .word 0x0041;" : : "D" (0), "S" (0) :)
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#define LKMC_M5OPS_EXIT __asm__ __volatile__ (".word 0x040F; .word 0x0021;" : : "D" (0) :)
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#define LKMC_M5OPS_FAIL_1 __asm__ __volatile__ (".word 0x040F; .word 0x0022;" : : "D" (0), "S" (1) :)
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#define LKMC_M5OPS_RESETSTATS __asm__ __volatile__ (".word 0x040F; .word 0x0040;" : : "D" (0), "S" (0) :)
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#elif defined(__arm__)
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#define LKMC_M5OPS_CHECKPOINT_ASM mov r0, #0; mov r1, #0; mov r2, #0; mov r3, #0; .inst 0xEE000110 | (0x43 << 16)
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#define LKMC_M5OPS_DUMPSTATS_ASM mov r0, #0; mov r1, #0; mov r2, #0; mov r3, #0; .inst 0xEE000110 | (0x41 << 16)
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#define LKMC_M5OPS_EXIT_ASM mov r0, #0; mov r1, #0; .inst 0xEE000110 | (0x21 << 16)
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#define LKMC_M5OPS_FAIL_1_ASM mov r0, #0; mov r1, #0; mov r2, #1; mov r3, #0; .inst 0xEE000110 | (0x22 << 16)
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#define LKMC_M5OPS_RESETSTATS_ASM mov r0, #0; mov r1, #0; mov r2, #0; mov r3, #0; .inst 0xEE000110 | (0x40 << 16)
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#define LKMC_M5OPS_CHECKPOINT __asm__ __volatile__ ("mov r0, #0; mov r1, #0; mov r2, #0; mov r3, #0; .inst 0xEE000110 | (0x43 << 16);" : : : "r0", "r1", "r2", "r3")
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#define LKMC_M5OPS_DUMPSTATS __asm__ __volatile__ ("mov r0, #0; mov r1, #0; mov r2, #0; mov r3, #0; .inst 0xEE000110 | (0x41 << 16);" : : : "r0", "r1", "r2", "r3")
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#define LKMC_M5OPS_EXIT __asm__ __volatile__ ("mov r0, #0; mov r1, #0; .inst 0xEE000110 | (0x21 << 16);" : : : "r0", "r1" )
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#define LKMC_M5OPS_FAIL_1 __asm__ __volatile__ ("mov r0, #0; mov r1, #0; mov r2, #1; mov r3, #0; .inst 0xEE000110 | (0x22 << 16);" : : : "r0", "r1", "r2", "r3")
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#define LKMC_M5OPS_RESETSTATS __asm__ __volatile__ ("mov r0, #0; mov r1, #0; mov r2, #0; mov r3, #0; .inst 0xEE000110 | (0x40 << 16);" : : : "r0", "r1", "r2", "r3")
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#elif defined(__aarch64__)
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#define LKMC_M5OPS_CHECKPOINT_ASM mov x0, 0; mov x1, 0; .inst 0xFF000110 | (0x43 << 16);
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#define LKMC_M5OPS_DUMPSTATS_ASM mov x0, 0; mov x1, 0; .inst 0xFF000110 | (0x41 << 16);
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#define LKMC_M5OPS_EXIT_ASM mov x0, 0; .inst 0XFF000110 | (0x21 << 16);
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#define LKMC_M5OPS_FAIL_1_ASM mov x0, 0; mov x1, 1; .inst 0xFF000110 | (0x22 << 16);
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#define LKMC_M5OPS_RESETSTATS_ASM mov x0, 0; mov x1, 0; .inst 0XFF000110 | (0x40 << 16);
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#define LKMC_M5OPS_CHECKPOINT __asm__ __volatile__ ("mov x0, 0; mov x1, 0; .inst 0xFF000110 | (0x43 << 16);" : : : "x0", "x1")
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#define LKMC_M5OPS_DUMPSTATS __asm__ __volatile__ ("mov x0, 0; mov x1, 0; .inst 0xFF000110 | (0x41 << 16);" : : : "x0", "x1")
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#define LKMC_M5OPS_EXIT __asm__ __volatile__ ("mov x0, 0; .inst 0XFF000110 | (0x21 << 16);" : : : "x0" )
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#define LKMC_M5OPS_FAIL_1 __asm__ __volatile__ ("mov x0, 0; mov x1, 1; .inst 0xFF000110 | (0x22 << 16);" : : : "x0", "x1")
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#define LKMC_M5OPS_RESETSTATS __asm__ __volatile__ ("mov x0, 0; mov x1, 0; .inst 0XFF000110 | (0x40 << 16);" : : : "x0", "x1")
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#else
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#error m5ops not implemented for the current arch
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#endif
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#else
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#define LKMC_M5OPS_CHECKPOINT_ASM
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#define LKMC_M5OPS_DUMPSTATS_ASM
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#define LKMC_M5OPS_EXIT_ASM
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#define LKMC_M5OPS_FAIL_1_ASM
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#define LKMC_M5OPS_RESETSTATS_ASM
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#define LKMC_M5OPS_CHECKPOINT
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#define LKMC_M5OPS_DUMPSTATS
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#define LKMC_M5OPS_EXIT
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#define LKMC_M5OPS_FAIL_1
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#define LKMC_M5OPS_RESETSTATS
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#endif
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#endif
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