mirror of
https://github.com/cirosantilli/linux-kernel-module-cheat.git
synced 2026-01-23 02:05:57 +01:00
6e790042f0
Fixes the failing tests that called abort(). For coincidence, only native tests were failing. Asked at: https://stackoverflow.com/questions/56324948/why-does-calling-the-c-abort-function-from-an-x86-64-assembly-function-lead-to
65 lines
1.3 KiB
C
65 lines
1.3 KiB
C
#ifndef LKMC_X86_64_H
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#define LKMC_X86_64_H
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/* This and other macros may make C function calls, and therefore can destroy
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* non-callee saved registers. */
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#define LKMC_ASSERT_EQ(general1, general2) \
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mov general2, %rdi; \
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push %rdi; \
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mov general1, %rdi; \
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pop %rsi; \
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mov $__LINE__, %edx; \
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call lkmc_assert_eq_64; \
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;
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#define LKMC_ASSERT_FAIL \
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mov $__LINE__, %edi; \
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call lkmc_assert_fail; \
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;
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/* Assert that two memory arrays are the same. */
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#define LKMC_ASSERT_MEMCMP(label1, label2, const_size) \
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lea label1(%rip), %rdi; \
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lea label2(%rip), %rsi; \
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mov const_size, %rdx; \
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mov $__LINE__, %ecx; \
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call lkmc_assert_memcmp; \
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;
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/* Function epilogue.
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*
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* https://github.com/cirosantilli/linux-kernel-module-cheat#x86_64-calling-convention
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*/
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#define LKMC_EPILOGUE \
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add $8, %rsp; \
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pop %rbx; \
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pop %r12; \
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pop %r13; \
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pop %r14; \
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pop %r15; \
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pop %rbp; \
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mov $0, %rax; \
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ret; \
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;
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/* Function prologue.
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*
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* https://github.com/cirosantilli/linux-kernel-module-cheat#x86_64-calling-convention
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*/
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#define LKMC_PROLOGUE \
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.text; \
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.global main; \
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main: \
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push %rbp; \
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mov %rsp, %rbp; \
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push %r15; \
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push %r14; \
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push %r13; \
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push %r12; \
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push %rbx; \
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sub $8, %rsp; \
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main_after_prologue: \
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;
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#endif
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