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Syscalls return a value, right?

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This commit is contained in:
apio 2022-10-02 10:47:59 +02:00
parent 85d4268b01
commit dc0fd428d3
2 changed files with 5 additions and 3 deletions
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2
libs/libc/include/luna/syscall.h
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@ -8,7 +8,7 @@ extern "C"
{
#endif
void __syscall0(int sys_num);
long int __syscall0(int sys_num);
#ifdef __cplusplus
}

6
libs/libc/src/luna/syscall.cpp
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@ -3,8 +3,10 @@
extern "C"
{
void __syscall0(int sys_num)
long int __syscall0(int sys_num)
{
asm volatile("int $0x42" : : "a"(sys_num));
long int result;
asm volatile("int $0x42" : "=a"(result) : "a"(sys_num));
return result;
}
}