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Workaround for https://sourceware.org/bugzilla/show_bug.cgi?id=32813

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Andreas Abel
2025-06-08 21:35:50 +02:00
parent 08e351b7fb
commit b3191d26c0
1 changed files with 13 additions and 3 deletions
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16
kernelNanoBench.py
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@@ -7,6 +7,8 @@ import sys
from collections import OrderedDict
from shutil import copyfile
from x64_lib import *
PFC_START_ASM = '.quad 0xE0B513B1C2813F04'
PFC_STOP_ASM = '.quad 0xF0B513B1C2813F04'
@@ -41,10 +43,18 @@ def assemble(code, objFile, asmFile='/tmp/ramdisk/asm.s'):
code = '.intel_syntax noprefix;' + code + ';1:;.att_syntax prefix\n'
with open(asmFile, 'w') as f:
f.write(code);
subprocess.check_call(['as', asmFile, '-o', objFile])
subprocess.check_output(['as', asmFile, '-o', objFile], stderr=subprocess.STDOUT)
except subprocess.CalledProcessError as e:
sys.stderr.write("Error (assemble): " + str(e))
sys.stderr.write(code)
# Workaround for https://sourceware.org/bugzilla/show_bug.cgi?id=32813
if ('same type of prefix used twice' in e.output.decode()) and ('REX64' in code):
return assemble(code.replace('REX64 ', ''), objFile, asmFile)
elif "register type mismatch for `lsl'" in e.output.decode():
code, n = re.subn(r'(LSL \S*, )(\S*?);', lambda m: f'{m.group(1)}{regToSize(m.group(2),16)};', code)
if n > 0:
return assemble(code, objFile, asmFile)
print(f"Error (assemble): {str(e)}", file=sys.stderr)
print(e.output.decode(), file=sys.stderr)
print(code, file=sys.stderr)
exit(1)