#!/usr/bin/env python3

template = """.global {name}
{name}:
    li a7, SYS_{name}
    ecall
    ret"""


def genstub(syscall: str):
    return template.format(name=syscall)


syscalls = [
    "fork",
    "exit",
    "wait",
    "pipe",
    "read",
    "write",
    "close",
    "kill",
    "exec",
    "open",
    "mknod",
    "unlink",
    "fstat",
    "link",
    "mkdir",
    "chdir",
    "dup",
    "getpid",
    "sbrk",
    "sleep",
    "uptime",
    "trace",
    "halt",
]

assembly = "\n\n".join(map(genstub, syscalls))

# TODO: Perhaps do some more specific assertions on the code here
assert len(assembly) > 0, "No assembly code generated. Something is fishy"

print("# generated by usys.py - do not edit\n")
print('#include "kernel/syscall.h"\n')
print(assembly)