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#!/usr/bin/env python3
# SPDX-License-Identifier: BSD-3-Clause
# Copyright (c) 2025 Red Hat, Inc.
"""Generate a version map file used by GNU or MSVC linker."""
import argparse
import re
# From eal_export.h
export_exp_sym_regexp = re.compile(
r"^RTE_EXPORT_EXPERIMENTAL_SYMBOL\(([^,]+), ([0-9]+.[0-9]+)\)"
)
export_int_sym_regexp = re.compile(r"^RTE_EXPORT_INTERNAL_SYMBOL\(([^)]+)\)")
export_sym_regexp = re.compile(r"^RTE_EXPORT_SYMBOL\(([^)]+)\)")
ver_sym_regexp = re.compile(r"^RTE_VERSION_SYMBOL\(([^,]+), [^,]+, ([^,]+),")
ver_exp_sym_regexp = re.compile(r"^RTE_VERSION_EXPERIMENTAL_SYMBOL\([^,]+, ([^,]+),")
default_sym_regexp = re.compile(r"^RTE_DEFAULT_SYMBOL\(([^,]+), [^,]+, ([^,]+),")
parser = argparse.ArgumentParser(
description=__doc__,
formatter_class=argparse.RawDescriptionHelpFormatter,
)
parser.add_argument(
"--linker", choices=["gnu", "mingw", "mslinker", ], required=True, help="Linker type"
)
parser.add_argument(
"--abi-version",
required=True,
type=argparse.FileType("r", encoding="utf-8"),
help="ABI version file",
)
parser.add_argument(
"--output",
required=True,
type=argparse.FileType("w", encoding="utf-8"),
help="Output file",
)
parser.add_argument(
"--source",
nargs="+",
required=True,
type=argparse.FileType("r", encoding="utf-8"),
help="Input source to parse",
)
args = parser.parse_args()
ABI_MAJOR = re.match("([0-9]+).[0-9]", args.abi_version.readline()).group(1)
ABI = f"DPDK_{ABI_MAJOR}"
symbols = {}
for file in args.source:
for ln in file.readlines():
node = None
symbol = None
comment = ""
if export_exp_sym_regexp.match(ln):
node = "EXPERIMENTAL"
symbol = export_exp_sym_regexp.match(ln).group(1)
version = export_exp_sym_regexp.match(ln).group(2)
comment = f" # added in {version}"
elif export_int_sym_regexp.match(ln):
node = "INTERNAL"
symbol = export_int_sym_regexp.match(ln).group(1)
elif export_sym_regexp.match(ln):
node = ABI
symbol = export_sym_regexp.match(ln).group(1)
elif ver_sym_regexp.match(ln):
abi = ver_sym_regexp.match(ln).group(1)
node = f"DPDK_{abi}"
symbol = ver_sym_regexp.match(ln).group(2)
elif ver_exp_sym_regexp.match(ln):
node = "EXPERIMENTAL"
symbol = ver_exp_sym_regexp.match(ln).group(1)
elif default_sym_regexp.match(ln):
abi = default_sym_regexp.match(ln).group(1)
node = f"DPDK_{abi}"
symbol = default_sym_regexp.match(ln).group(2)
if not symbol:
continue
if node not in symbols:
symbols[node] = {}
symbols[node][symbol] = comment
if args.linker == "mslinker":
print("EXPORTS", file=args.output)
for key in (ABI, "EXPERIMENTAL", "INTERNAL"):
if key not in symbols:
continue
for symbol in sorted(symbols[key].keys()):
print(f"\t{symbol}", file=args.output)
del symbols[key]
else: # GNU format
local_token = False
for key in (ABI, "EXPERIMENTAL", "INTERNAL"):
if key not in symbols:
continue
print(f"{key} {{\n\tglobal:\n", file=args.output)
for symbol in sorted(symbols[key].keys()):
if args.linker == "mingw" and symbol.startswith("per_lcore"):
prefix = "__emutls_v."
else:
prefix = ""
comment = symbols[key][symbol]
print(f"\t{prefix}{symbol};{comment}", file=args.output)
if not local_token:
print("\n\tlocal: *;", file=args.output)
local_token = True
print("};", file=args.output)
del symbols[key]
for key in sorted(symbols.keys()):
print(f"{key} {{\n\tglobal:\n", file=args.output)
for symbol in sorted(symbols[key].keys()):
if args.linker == "mingw" and symbol.startswith("per_lcore"):
prefix = "__emutls_v."
else:
prefix = ""
comment = symbols[key][symbol]
print(f"\t{prefix}{symbol};{comment}", file=args.output)
print(f"}} {ABI};", file=args.output)
if not local_token:
print("\n\tlocal: *;", file=args.output)
local_token = True
del symbols[key]
# No exported symbol, add a catch all
if not local_token:
print(f"{ABI} {{", file=args.output)
print("\n\tlocal: *;", file=args.output)
local_token = True
print("};", file=args.output)
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