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.section .text
.global _syscall
.type _syscall, @function
_syscall:
push %ebx // preserve registers
push %esi
push %edi
push %ebp
// note: i could squeeze out another parameter out of %ebp
mov 20(%esp), %eax
mov 24(%esp), %ebx
mov %esp, %ecx
mov $_syscall_ret, %edx
mov 28(%esp), %esi
mov 32(%esp), %edi
mov 36(%esp), %ebp
sysenter
_syscall_ret:
pop %ebp
pop %edi
pop %esi
pop %ebx
ret
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