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tools: remove genv8constants.py

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Unused after commit aa3a572e6b ("build: remove dtrace & etw support")
from last year. I had this vague notion that llnode also used it but
that is another script.

Fixes: https://github.com/nodejs/node/issues/49991
PR-URL: https://github.com/nodejs/node/pull/50023
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
This commit is contained in:
Ben Noordhuis
2023-10-05 23:11:10 +02:00
committed by GitHub
parent e9bda11761
commit f73650ea52
2 changed files with 1 additions and 119 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
.github/label-pr-config.yml vendored
View File

@@ -47,7 +47,7 @@ subSystemLabels:
/^\w+\.md$/: doc
# Different variants of Makefile and build files
/^(?:tools\/)?(?:Makefile|BSDmakefile|create_android_makefiles)$/: build, needs-ci
/^tools\/(?:install\.py|genv8constants\.py|getnodeversion\.py|js2c\.py|utils\.py|configure\.d\/.*)$/: build, python, needs-ci
/^tools\/(?:install\.py|getnodeversion\.py|js2c\.py|utils\.py|configure\.d\/.*)$/: build, python, needs-ci
/^vcbuild\.bat$/: build, windows, needs-ci
/^(?:android-)?configure|node\.gyp|common\.gypi$/: build, needs-ci
# More specific tools

118
tools/genv8constants.py
View File

@@ -1,118 +0,0 @@
#!/usr/bin/env python
#
# genv8constants.py output_file libv8_base.a
#
# Emits v8dbg constants stored in libv8_base.a in a format suitable for the V8
# ustack helper.
#
from __future__ import print_function
import re
import subprocess
import sys
import errno
if len(sys.argv) != 3:
print("Usage: genv8constants.py outfile libv8_base.a")
sys.exit(2)
outfile = open(sys.argv[1], 'w')
try:
pipe = subprocess.Popen([ 'objdump', '-z', '-D', sys.argv[2] ],
bufsize=-1, stdout=subprocess.PIPE).stdout
except OSError as e:
if e.errno == errno.ENOENT:
print('''
Node.js compile error: could not find objdump
Check that GNU binutils are installed and included in PATH
''')
else:
print('problem running objdump: ', e.strerror)
sys.exit()
pattern = re.compile('([0-9a-fA-F]{8}|[0-9a-fA-F]{16}) <(.*)>:')
v8dbg = re.compile('^v8dbg.*$')
numpattern = re.compile('^[0-9a-fA-F]{2} $')
octets = 4
outfile.write("""
/*
* File automatically generated by genv8constants. Do not edit.
*
* The following offsets are dynamically from libv8_base.a. See src/v8ustack.d
* for details on how these values are used.
*/
#ifndef V8_CONSTANTS_H
#define V8_CONSTANTS_H
""")
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:
wrapped_val = curr_val & 0xffffffff
if curr_val & 0x80000000 != 0:
wrapped_val = 0x100000000 - wrapped_val
outfile.write("#define %s -0x%x\n" % (curr_sym.upper(), wrapped_val))
else:
outfile.write("#define %s 0x%x\n" % (curr_sym.upper(), wrapped_val))
out_reset()
for line in pipe:
line = line.decode('utf-8')
if curr_sym != None:
#
# This bit of code has nasty knowledge of the objdump text output
# format, but this is the most obvious robust approach. We could almost
# rely on looking at numbered fields, but some instructions look very
# much like hex numbers (e.g., "adc"), and we don't want to risk picking
# those up by mistake, so we look at character-based columns instead.
#
for i in range(0, 3):
# 6-character margin, 2-characters + 1 space for each field
idx = 6 + i * 3
octetstr = line[idx:idx+3]
if curr_octet > octets:
break
if not numpattern.match(octetstr):
break
curr_val += int('0x%s' % octetstr, 16) << (curr_octet * 8)
curr_octet += 1
match = pattern.match(line)
if match is None:
continue
# 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("""
#endif /* V8_CONSTANTS_H */
""")
outfile.close()