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import os
import subprocess
def gen_linker_script(
filein: str = "cmake/prioritized_text.txt", fout: str = "cmake/linker_script.ld"
) -> None:
with open(filein) as f:
prioritized_text = f.readlines()
prioritized_text = [
line.replace("\n", "") for line in prioritized_text if line != "\n"
]
ld = os.environ.get("LD", "ld")
linker_script_lines = subprocess.check_output([ld, "-verbose"], text=True).split(
"\n"
)
indices = [
i
for i, x in enumerate(linker_script_lines)
if x == "=================================================="
]
linker_script_lines = linker_script_lines[indices[0] + 1 : indices[1]]
text_line_start = [
i for i, line in enumerate(linker_script_lines) if ".text :" in line
]
assert len(text_line_start) == 1, "The linker script has multiple text sections!"
text_line_start = text_line_start[0]
with open(fout, "w") as f:
for lineid, line in enumerate(linker_script_lines):
if lineid == text_line_start + 2:
f.write(" *(\n")
for plines in prioritized_text:
f.write(f" .text.{plines}\n")
f.write(" )\n")
f.write(f"{line}\n")
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