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🐛 修复printf的bug

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This commit is contained in:
fslongjin
2022-05-07 13:54:28 +08:00
parent fd0147e04c
commit 37da6ef19e
5 changed files with 26 additions and 17 deletions
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10
user/libs/libsystem/syscall.c
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@ -14,15 +14,11 @@ 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"
: "=m"(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;
if (syscall_id == SYS_BRK || syscall_id == SYS_OPEN)
{
printf("retval = %#018lx\n", (uint64_t)err_code);
printf("errcode = %d\n", err_code);
}
return err_code;
}