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wrappers.S
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#include <asm.h>
#ifndef fast_syscalls
#define CALL_OS(SC_NUM) \
movl $##SC_NUM, %eax; \
int $0x80;
#else
#define CALL_OS(SC_NUM) \
movl $##SC_NUM, %eax; \
pushl %ecx; \
pushl %edx; \
pushl $ret_##SC_NUM; \
pushl %ebp; \
movl %esp, %ebp; \
sysenter; \
ret_##SC_NUM: \
popl %ebp; \
addl $4, %esp; \
popl %edx; \
popl %ecx;
#endif
#define HANDLE_ERRORS(SC_NUM) \
cmpl $0, %eax; \
jge exit_##SC_NUM; \
movl $0, %ecx; \
subl %eax, %ecx; \
movl %ecx, errno; \
movl $-1, %eax; \
exit_##SC_NUM:
ENTRY(waitKey)
pushl %ebp
movl %esp, %ebp
movl 8(%ebp), %edx
movl 12(%ebp), %ecx
CALL_OS(3)
HANDLE_ERRORS(3)
popl %ebp
ret
ENTRY(write)
pushl %ebp
movl %esp, %ebp
pushl %ebx
movl 8(%ebp), %edx
movl 12(%ebp), %ecx
movl 16(%ebp), %ebx
CALL_OS(4)
HANDLE_ERRORS(4)
popl %ebx
popl %ebp
ret
ENTRY(gettime)
pushl %ebp
movl %esp, %ebp
CALL_OS(10)
popl %ebp
ret
ENTRY(getpid)
pushl %ebp
movl %esp, %ebp
CALL_OS(20)
popl %ebp
ret
ENTRY(fork)
pushl %ebp
movl %esp, %ebp
CALL_OS(2)
HANDLE_ERRORS(2)
pop %ebp
ret
ENTRY(exit)
pushl %ebp
movl %esp, %ebp
CALL_OS(1)
ENTRY(get_stats)
pushl %ebp
movl %esp, %ebp
movl 8(%ebp), %edx
movl 12(%ebp), %ecx
CALL_OS(35)
HANDLE_ERRORS(35)
pop %ebp
ret
ENTRY(gotoXY)
pushl %ebp
movl %esp, %ebp
movl 8(%ebp), %edx
movl 12(%ebp), %ecx
CALL_OS(5)
HANDLE_ERRORS(5)
pop %ebp
ret
ENTRY(changeColor)
pushl %ebp
movl %esp, %ebp
movl 8(%ebp), %edx
movl 12(%ebp), %ecx
CALL_OS(6)
HANDLE_ERRORS(6)
pop %ebp
ret
ENTRY(clrscr)
pushl %ebp
movl %esp, %ebp
movl 8(%ebp), %edx
CALL_OS(7)
HANDLE_ERRORS(7)
pop %ebp
ret
ENTRY(__set_thread_wrapper)
pushl %ebp
movl %esp, %ebp
movl 8(%ebp), %edx
CALL_OS(55)
HANDLE_ERRORS(55)
pop %ebp
ret
ENTRY(threadCreateWithStack)
pushl %ebp
movl %esp, %ebp
pushl %ebx
movl 8(%ebp), %edx
movl 12(%ebp), %ecx
movl 16(%ebp), %ebx
CALL_OS(56)
HANDLE_ERRORS(56)
popl %ebx
pop %ebp
ret
ENTRY(memRegGet)
pushl %ebp
movl %esp, %ebp
movl 8(%ebp), %edx
CALL_OS(12)
HANDLE_ERRORS(12)
pop %ebp
ret
ENTRY(memRegDel)
pushl %ebp
movl %esp, %ebp
movl 8(%ebp), %edx
CALL_OS(13)
HANDLE_ERRORS(13)
pop %ebp
ret
ENTRY(semCreate)
pushl %ebp
movl %esp, %ebp
movl 8(%ebp), %edx
CALL_OS(64)
HANDLE_ERRORS(64)
pop %ebp
ret
ENTRY(semWait)
pushl %ebp
movl %esp, %ebp
movl 8(%ebp), %edx
CALL_OS(65)
HANDLE_ERRORS(65)
pop %ebp
ret
ENTRY(semSignal)
pushl %ebp
movl %esp, %ebp
movl 8(%ebp), %edx
CALL_OS(66)
HANDLE_ERRORS(66)
pop %ebp
ret
ENTRY(semDestroy)
pushl %ebp
movl %esp, %ebp
movl 8(%ebp), %edx
CALL_OS(67)
HANDLE_ERRORS(67)
pop %ebp
ret