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fxconv: allow output with assembly but no data

This commit is contained in:
Lephenixnoir 2021-06-09 17:49:46 +02:00
parent d24ae5eef9
commit 0acea3baf6
Signed by: Lephenixnoir
GPG Key ID: 1BBA026E13FC0495
1 changed files with 45 additions and 29 deletions
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74
fxconv/fxconv.py
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@ -1060,6 +1060,11 @@ def elf(data, output, symbol, toolchain=None, arch=None, section=None,
symbol = symbol + "_staticdata"
data = data.data()
if data is None and assembly is None:
raise fxconv.FxconvError("elf() but no data and no assembly")
# Toolchain parameters
if toolchain is None:
toolchain = "sh3eb-elf"
if section is None:
@ -1078,46 +1083,57 @@ def elf(data, output, symbol, toolchain=None, arch=None, section=None,
raise FxconvError(f"non-trivial architecture for {toolchain} must be "+
"specified")
fp_obj = tempfile.NamedTemporaryFile()
fp_obj.write(data)
fp_obj.flush()
# Generate data - in <output> directly if there is no assembly
if assembly is not None:
if data:
fp_obj = tempfile.NamedTemporaryFile()
fp_obj.write(data)
fp_obj.flush()
sybl = "_binary_" + fp_obj.name.replace("/", "_")
objcopy_args = [
f"{toolchain}-objcopy", "-I", "binary", "-O", "elf32-sh",
"--binary-architecture", arch, "--file-alignment", "4",
"--rename-section", f".data={section}",
"--redefine-sym", f"{sybl}_start={symbol}",
"--redefine-sym", f"{sybl}_end={symbol}_end",
"--redefine-sym", f"{sybl}_size={symbol}_size",
fp_obj.name, output if not assembly else fp_obj.name + ".o" ]
proc = subprocess.run(objcopy_args)
if proc.returncode != 0:
raise FxconvError(f"objcopy returned {proc.returncode}")
# Generate assembly - in <output> directly if there is no data
if assembly:
fp_asm = tempfile.NamedTemporaryFile()
fp_asm.write(assembly.encode('utf-8'))
fp_asm.flush()
proc = subprocess.run([
f"{toolchain}-as", "-c", fp_asm.name, "-o", fp_asm.name + ".o" ])
as_args = [
f"{toolchain}-as", "-c", fp_asm.name, "-o",
output if not data else fp_asm.name + ".o" ]
proc = subprocess.run(as_args)
if proc.returncode != 0:
raise FxconvError(f"as returned {proc.returncode}")
sybl = "_binary_" + fp_obj.name.replace("/", "_")
# If both data and assembly are specified, merge everyone
objcopy_args = [
f"{toolchain}-objcopy", "-I", "binary", "-O", "elf32-sh",
"--binary-architecture", arch, "--file-alignment", "4",
"--rename-section", f".data={section}",
"--redefine-sym", f"{sybl}_start={symbol}",
"--redefine-sym", f"{sybl}_end={symbol}_end",
"--redefine-sym", f"{sybl}_size={symbol}_size",
fp_obj.name, output if assembly is None else fp_obj.name + "-tmp" ]
proc = subprocess.run(objcopy_args)
if proc.returncode != 0:
raise FxconvError(f"objcopy returned {proc.returncode}")
if assembly is not None:
proc = subprocess.run([
f"{toolchain}-ld", "-r", fp_obj.name + "-tmp", fp_asm.name + ".o",
"-o", output ])
os.remove(fp_obj.name + "-tmp")
os.remove(fp_asm.name + ".o")
if data and assembly:
ld_args = [
f"{toolchain}-ld", "-r", fp_obj.name + ".o", fp_asm.name + ".o",
"-o", output ]
proc = subprocess.run(ld_args)
if proc.returncode != 0:
raise FxconvError(f"ld returned {proc.returncode}")
fp_asm.close()
os.remove(fp_obj.name + ".o")
os.remove(fp_asm.name + ".o")
fp_obj.close()
if data:
fp_obj.close()
if assembly:
fp_asm.close()