47 lines
774 B
Python
Executable file
47 lines
774 B
Python
Executable file
#!/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)
|