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.global syscall
// call from c with 4 x 32bit params
// syscall number, p1,p2,p3,p4
// TODO: push stack frame?
syscall:
push %ebx // preserve (sysV abi convnetion)
mov 0x8(%esp),%eax //syscall number
mov 0xC(%esp),%edx //p1
mov 0x10(%esp),%ecx //p2
mov 0x14(%esp),%ebx //p3
int $0x80
mov %ebx, %eax // set as return value
pop %ebx // preserve
ret
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