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fslongjin
2022-06-02 14:20:53 +08:00
parent b97aaee746
commit d64ddfa0b6
12 changed files with 243 additions and 299 deletions
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11
user/libs/libsystem/syscall.c
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@ -3,7 +3,7 @@
#include <libc/errno.h>
long syscall_invoke(uint64_t syscall_id, uint64_t arg0, uint64_t arg1, uint64_t arg2, uint64_t arg3, uint64_t arg4, uint64_t arg5, uint64_t arg6, uint64_t arg7)
{
uint64_t err_code;
uint64_t __err_code;
__asm__ __volatile__(
"movq %2, %%r8 \n\t"
"movq %3, %%r9 \n\t"
@ -14,11 +14,12 @@ long syscall_invoke(uint64_t syscall_id, uint64_t arg0, uint64_t arg1, uint64_t
"movq %8, %%r14 \n\t"
"movq %9, %%r15 \n\t"
"int $0x80 \n\t"
// "movq %%rax, %0 \n\t"
: "=a"(err_code)
"movq %%rax, %0 \n\t"
:"=a"(__err_code)
: "a"(syscall_id), "m"(arg0), "m"(arg1), "m"(arg2), "m"(arg3), "m"(arg4), "m"(arg5), "m"(arg6), "m"(arg7)
: "memory", "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", "rcx", "rdx");
errno = err_code;
// printf("errcode = %#018lx\n", __err_code);
errno = __err_code;
return err_code;
return __err_code;
}