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Small asm-processor optimization (#459)

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Co-authored-by: zelda2774 <zelda2774@invalid>
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zelda2774 2020-10-19 01:10:31 +02:00 committed by GitHub
parent d02153707e
commit 9e5cbcdd57
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 17 additions and 10 deletions
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19
tools/asm_processor/asm_processor.py
View file

@ -185,7 +185,7 @@ class Section:
if self.sh_entsize != 0:
assert self.sh_size % self.sh_entsize == 0
if self.sh_type == SHT_NOBITS:
self.data = ''
self.data = b''
else:
self.data = data[self.sh_offset:self.sh_offset + self.sh_size]
self.index = index
@ -466,6 +466,9 @@ class GlobalAsmBlock:
self.fail(".ascii with no string", real_line)
return ret + num_parts if z else ret
def align2(self):
while self.fn_section_sizes[self.cur_section] % 2 != 0:
self.fn_section_sizes[self.cur_section] += 1
def align4(self):
while self.fn_section_sizes[self.cur_section] % 4 != 0:
@ -553,6 +556,9 @@ class GlobalAsmBlock:
self.add_sized(self.count_quoted_size(line, z, real_line, output_enc), real_line)
elif line.startswith('.byte'):
self.add_sized(len(line.split(',')), real_line)
elif line.startswith('.half'):
self.align2()
self.add_sized(2*len(line.split(',')), real_line)
elif line.startswith('.'):
# .macro, ...
self.fail("asm directive not supported", real_line)
@ -778,7 +784,7 @@ def parse_source(f, opt, framepointer, input_enc, output_enc, print_source=None)
output_lines[-1] = ''.join(src)
asm_functions.append(fn)
global_asm = None
elif ((line.startswith('#include "')) and line.endswith('" EARLY')):
elif line.startswith('#include "') and line.endswith('" EARLY'):
# C includes qualified with EARLY (i.e. #include "file.c" EARLY) will be
# processed recursively when encountered
fpath = os.path.dirname(f.name)
@ -1095,7 +1101,7 @@ def fixup_objfile(objfile_name, functions, asm_prelude, assembler, output_enc):
except:
pass
def run_wrapped(argv, outfile):
def run_wrapped(argv, outfile, functions):
parser = argparse.ArgumentParser(description="Pre-process .c files and post-process .o files to enable embedding assembly into C.")
parser.add_argument('filename', help="path to .c code")
parser.add_argument('--post-process', dest='objfile', help="path to .o file to post-process")
@ -1118,10 +1124,11 @@ def run_wrapped(argv, outfile):
if args.objfile is None:
with open(args.filename, encoding=args.input_enc) as f:
parse_source(f, opt=opt, framepointer=args.framepointer, input_enc=args.input_enc, output_enc=args.output_enc, print_source=outfile)
return parse_source(f, opt=opt, framepointer=args.framepointer, input_enc=args.input_enc, output_enc=args.output_enc, print_source=outfile)
else:
if args.assembler is None:
raise Failure("must pass assembler command")
if functions is None:
with open(args.filename, encoding=args.input_enc) as f:
functions = parse_source(f, opt=opt, framepointer=args.framepointer, input_enc=args.input_enc, output_enc=args.output_enc)
if not functions:
@ -1132,9 +1139,9 @@ def run_wrapped(argv, outfile):
asm_prelude = f.read()
fixup_objfile(args.objfile, functions, asm_prelude, args.assembler, args.output_enc)
def run(argv, outfile=sys.stdout.buffer):
def run(argv, outfile=sys.stdout.buffer, functions=None):
try:
run_wrapped(argv, outfile)
return run_wrapped(argv, outfile, functions)
except Failure as e:
print("Error:", e, file=sys.stderr)
sys.exit(1)

4
tools/asm_processor/build.py
View file

@ -35,7 +35,7 @@ try:
asmproc_flags = opt_flags + [in_file, '--input-enc', 'utf-8', '--output-enc', 'euc-jp']
compile_cmdline = compiler + compile_args + ['-I', in_dir, '-o', out_file, preprocessed_file.name]
asm_processor.run(asmproc_flags, outfile=preprocessed_file)
functions = asm_processor.run(asmproc_flags, outfile=preprocessed_file)
try:
subprocess.check_call(compile_cmdline)
except subprocess.CalledProcessError as e:
@ -47,6 +47,6 @@ try:
# To keep the preprocessed file:
# os._exit(1)
asm_processor.run(asmproc_flags + ['--post-process', out_file, '--assembler', assembler_sh, '--asm-prelude', prelude])
asm_processor.run(asmproc_flags + ['--post-process', out_file, '--assembler', assembler_sh, '--asm-prelude', prelude], functions=functions)
finally:
os.remove(preprocessed_file.name)