diff options
Diffstat (limited to 'tools/genv8constants.py')
-rwxr-xr-x | tools/genv8constants.py | 52 |
1 files changed, 35 insertions, 17 deletions
diff --git a/tools/genv8constants.py b/tools/genv8constants.py index efc644152dc..fb8b5ffa8c6 100755 --- a/tools/genv8constants.py +++ b/tools/genv8constants.py @@ -18,8 +18,10 @@ if len(sys.argv) != 3: outfile = file(sys.argv[1], 'w'); pipe = subprocess.Popen([ 'objdump', '-z', '-D', sys.argv[2] ], bufsize=-1, stdout=subprocess.PIPE).stdout; -pattern = re.compile('00000000 <(v8dbg_.*)>:'); -numpattern = re.compile('[0-9a-fA-F]{2}'); +pattern = re.compile('(00000000|0000000000000000) <(.*)>:'); +v8dbg = re.compile('^v8dbg.*$') +numpattern = re.compile('^[0-9a-fA-F]{2} $'); +octets = 4 outfile.write(""" /* @@ -32,13 +34,27 @@ outfile.write(""" #ifndef V8_CONSTANTS_H #define V8_CONSTANTS_H -#if defined(__i386) """); curr_sym = None; curr_val = 0; curr_octet = 0; +def out_reset(): + global curr_sym, curr_val, curr_octet + curr_sym = None; + curr_val = 0; + curr_octet = 0; + +def out_define(): + global curr_sym, curr_val, curr_octet, outfile, octets + if curr_sym != None: + if curr_val & 0x80000000 != 0: + outfile.write("#define %s -0x%x\n" % (curr_sym.upper(), 0x100000000 - curr_val)); + else: + outfile.write("#define %s 0x%x\n" % (curr_sym.upper(), curr_val)); + out_reset(); + for line in pipe: if curr_sym != None: # @@ -51,32 +67,34 @@ for line in pipe: for i in range (0, 3): # 6-character margin, 2-characters + 1 space for each field idx = 6 + i * 3; - octetstr = line[idx:idx+2] + octetstr = line[idx:idx+3] if not numpattern.match(octetstr): break; + if curr_octet > octets: + break; + curr_val += int('0x%s' % octetstr, 16) << (curr_octet * 8); curr_octet += 1; - if curr_octet < 4: - continue; - - outfile.write("#define %s 0x%x\n" % (curr_sym.upper(), curr_val)); - curr_sym = None; - curr_val = 0; - curr_octet = 0; - continue; - match = pattern.match(line) if match == None: continue; - curr_sym = match.group(1); + octets = len(match.group(1)) / 2; + + # Print previous symbol + out_define(); + + v8match = v8dbg.match(match.group(2)); + if v8match != None: + out_reset(); + curr_sym = match.group(2); + +# Print last symbol +out_define(); outfile.write(""" -#else -#error "only i386 is supported for DTrace ustack helper" -#endif #endif /* V8_CONSTANTS_H */ """); |