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buildlib/make_abi_structs.py
56 строк
2 KB
Jason Gunthorpe
bnxt: Move bnxt to exclusively use the kernel uapi headers
28 мар 2018, 00:19
28 мар 2018, 00:19
e5fb3ad
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#/usr/bin/env python """This script transforms the structs inside the kernel ABI headers into a define of an anonymous struct. eg struct abc {int foo;}; becomes #define _STRUCT_abc struct {int foo;}; This allows the exact same struct to be included in the provider wrapper struct: struct abc_resp { struct ibv_abc ibv_resp; _STRUCT_abc; }; Which duplicates the struct layout and naming we have historically used, but sources the data directly from the kernel headers instead of manually copying.""" import re; import functools; import sys; def in_struct(ln,FO,nesting=0): """Copy a top level structure over to the #define output, keeping track of nested structures.""" if nesting == 0: if re.match(r"(}.*);",ln): FO.write(ln[:-1] + "\n\n"); return find_struct; FO.write(ln + " \\\n"); if ln == "struct {" or ln == "union {": return functools.partial(in_struct,nesting=nesting+1); if re.match(r"}.*;",ln): return functools.partial(in_struct,nesting=nesting-1); return functools.partial(in_struct,nesting=nesting); def find_struct(ln,FO): """Look for the start of a top level structure""" if ln.startswith("struct ") or ln.startswith("union "): g = re.match(r"(struct|union)\s+(\S+)\s+{",ln); FO.write("#define _STRUCT_%s %s { \\\n"%(g.group(2),g.group(1))); return in_struct; return find_struct; with open(sys.argv[1]) as FI: with open(sys.argv[2],"w") as FO: state = find_struct; for ln in FI: # Drop obvious comments ln = ln.strip(); ln = re.sub(r"/\*.*\*/","",ln); ln = re.sub(r"//.*$","",ln); state = state(ln,FO);