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Add getgid() and getpid() syscalls. Prep for LibC.

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This commit is contained in:
Andreas Kling 2018-10-22 13:55:11 +02:00
parent bae59609e3
commit 85bcf2ed0f
5 changed files with 34 additions and 13 deletions
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28
Kernel/Syscall.h
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@ -1,9 +1,11 @@
#pragma once
#define DO_SYSCALL_A0(function) Syscall::invoke((DWORD)(function))
#define DO_SYSCALL_A1(function, arg1) Syscall::invoke((DWORD)(function), (DWORD)(arg1))
#define DO_SYSCALL_A2(function, arg1, arg2) Syscall::invoke((DWORD)(function), (DWORD)(arg1), (DWORD)(arg2))
#define DO_SYSCALL_A3(function, arg1, arg2, arg3) Syscall::invoke((DWORD)(function), (DWORD)(arg1), (DWORD)(arg2), (DWORD)arg3)
#include <AK/Types.h>
#define DO_SYSCALL_A0(function) Syscall::invoke((dword)(function))
#define DO_SYSCALL_A1(function, arg1) Syscall::invoke((dword)(function), (dword)(arg1))
#define DO_SYSCALL_A2(function, arg1, arg2) Syscall::invoke((dword)(function), (dword)(arg1), (dword)(arg2))
#define DO_SYSCALL_A3(function, arg1, arg2, arg3) Syscall::invoke((dword)(function), (dword)(arg1), (dword)(arg2), (dword)arg3)
namespace Syscall {
@ -18,34 +20,36 @@ enum Function {
PosixKill = 0x1989,
PosixGetuid = 0x1990,
PosixExit = 0x1991,
PosixGetgid = 0x1992,
PosixGetpid = 0x1993,
};
void initialize();
inline DWORD invoke(DWORD function)
inline dword invoke(dword function)
{
DWORD result;
dword result;
asm volatile("int $0x80":"=a"(result):"a"(function));
return result;
}
inline DWORD invoke(DWORD function, DWORD arg1)
inline dword invoke(dword function, dword arg1)
{
DWORD result;
dword result;
asm volatile("int $0x80":"=a"(result):"a"(function),"d"(arg1));
return result;
}
inline DWORD invoke(DWORD function, DWORD arg1, DWORD arg2)
inline dword invoke(dword function, dword arg1, dword arg2)
{
DWORD result;
dword result;
asm volatile("int $0x80":"=a"(result):"a"(function),"d"(arg1),"c"(arg2));
return result;
}
inline DWORD invoke(DWORD function, DWORD arg1, DWORD arg2, DWORD arg3)
inline dword invoke(dword function, dword arg1, dword arg2, dword arg3)
{
DWORD result;
dword result;
asm volatile("int $0x80":"=a"(result):"a"(function),"d"(arg1),"c"(arg2),"b"(arg3));
return result;
}