Last active
May 24, 2019 08:53
-
-
Save ofrobots/0bdcab89771221ace68d to your computer and use it in GitHub Desktop.
Using V8's gdb macros for low level debugging
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| $ gdb --args ./iojs_g -pe 'process.hrtime([0,0])' | |
| (gdb) source deps/v8/tools/gdbinit | |
| (gdb) b node::Hrtime | |
| Breakpoint 1 at 0x1282619: file ../src/node.cc, line 2028. | |
| (gdb) r | |
| Starting program: /usr/local/google/home/ofrobots/src/io.js/iojs_g -pe process.hrtime\(\[0,0\]\) | |
| ... | |
| Breakpoint 1, node::Hrtime (args=...) at ../src/node.cc:2028 | |
| 2028 Environment* env = Environment::GetCurrent(args); | |
| (gdb) jst | |
| ==== JS stack trace ========================================= | |
| Security context: 0x2a4167618d61 <JS Object>#0# | |
| 1: /* anonymous */ [[eval]:1] (this=0x2a416766cf59 <JS Global Object>#1#) | |
| 5: runInThisContext [vm.js:54] (this=0x3598f70043b9 <an Object with map 0x2f271e218081>#2#,code=0x2c85001f0929 <String[21]: process.hrtime([0,0])>,options=0x3598f7127ab1 <an Object with map 0x2f271e212cf9>#3#) | |
| 6: /* anonymous */ [[eval]-wrapper:6] (this=0x3598f7121e51 <an Object with map 0x2f271e205ed1>#4#,exports=0x3598f7121e51 <an Object with map 0x2f271e205ed1>#4#,require=0x3598f7126069 <JS Function require (SharedFunctionInfo 0x1ce87c960f41)>#5#,module=0x3598f7121d39 <a Module with map 0x2f271e236129>#6#,__filename=0x3598f7125e81 <String[14]: [eval]-wrapper>,__dirname=0x2c8500104cc1 <String[1]: .>) | |
| 8: _compile [module.js:428] (this=0x3598f7121d39 <a Module with map 0x2f271e236129>#6#,content=0x3598f7124e79 <String[224]\: global.__filename = "[eval]";\nglobal.exports = exports;\nglobal.module = module;\nglobal.__dirname = __dirname;\nglobal.require = require;\nreturn require("vm").runInThisContext("process.hrtime([0,0])", { filename: "[eval]" });\n>,filename=0x3598f7125e81 <String[14]: [eval]-wrapper>) | |
| 9: /* anonymous */(aka /* anonymous */) [node.js:567] (this=0x2a4167604121 <undefined>) | |
| 10: doNTCallback0(aka doNTCallback0) [node.js:408] (this=0x2a4167604121 <undefined>,callback=0x3598f7124ea1 <JS Function (SharedFunctionInfo 0x1ce87c94ab59)>#7#) | |
| 11: _tickCallback [node.js:337] (this=0x2a416766ce31 <a process with map 0x2f271e213371>#8#) | |
| ==== Details ================================================ | |
| [1]: /* anonymous */ [[eval]:1] (this=0x2a416766cf59 <JS Global Object>#1#) { | |
| // stack-allocated locals | |
| var .result = 0x2a4167604121 <undefined> | |
| // expression stack (top to bottom) | |
| [04] : 0x2a4167662969 <JS Function hrtime (SharedFunctionInfo 0x2a41676628d1)>#9# | |
| [03] : 0x3598f7127c31 <JS Array[2]>#10# | |
| [02] : 0x2a416766ce31 <a process with map 0x2f271e213371>#8# | |
| [01] : 0x2a4167662969 <JS Function hrtime (SharedFunctionInfo 0x2a41676628d1)>#9# | |
| --------- s o u r c e c o d e --------- | |
| process.hrtime([0,0]) | |
| ----------------------------------------- | |
| } | |
| [5]: runInThisContext [vm.js:54] (this=0x3598f70043b9 <an Object with map 0x2f271e218081>#2#,code=0x2c85001f0929 <String[21]: process.hrtime([0,0])>,options=0x3598f7127ab1 <an Object with map 0x2f271e212cf9>#3#) { | |
| // stack-allocated locals | |
| var script = 0x3598f7127ae1 <a ContextifyScript with map 0x2f271e211fc1>#11# | |
| // expression stack (top to bottom) | |
| [04] : 0x2a4167665bf1 <JS Function runInThisContext (SharedFunctionInfo 0x2a4167665b59)>#12# | |
| [03] : 0x3598f7127ab1 <an Object with map 0x2f271e212cf9>#3# | |
| [02] : 0x3598f7127ae1 <a ContextifyScript with map 0x2f271e211fc1>#11# | |
| [01] : 0x2a4167665bf1 <JS Function runInThisContext (SharedFunctionInfo 0x2a4167665b59)>#12# | |
| --------- s o u r c e c o d e --------- | |
| function (code, options) {\x0a var script = new Script(code, options);\x0a return script.runInThisContext(options);\x0a} | |
| ----------------------------------------- | |
| } | |
| [6]: /* anonymous */ [[eval]-wrapper:6] (this=0x3598f7121e51 <an Object with map 0x2f271e205ed1>#4#,exports=0x3598f7121e51 <an Object with map 0x2f271e205ed1>#4#,require=0x3598f7126069 <JS Function require (SharedFunctionInfo 0x1ce87c960f41)>#5#,module=0x3598f7121d39 <a Module with map 0x2f271e236129>#6#,__filename=0x3598f7125e81 <String[14]: [eval]-wrapper>,__dirname=0x2c8500104cc1 <String[1]: .>) { | |
| // expression stack (top to bottom) | |
| [03] : 0x3598f7127ab1 <an Object with map 0x2f271e212cf9>#3# | |
| [02] : 0x2c85001f0929 <String[21]: process.hrtime([0,0])> | |
| [01] : 0x3598f70043b9 <an Object with map 0x2f271e218081>#2# | |
| [00] : 0x2a41676dc811 <JS Function exports.runInThisContext (SharedFunctionInfo 0x2a41676dc319)>#13# | |
| --------- s o u r c e c o d e --------- | |
| function (exports, require, module, __filename, __dirname) { global.__filename = "[eval]";\x0aglobal.exports = exports;\x0aglobal.module = module;\x0aglobal.__dirname = __dirname;\x0aglobal.require = require;\x0areturn require("vm").runInThisContext("process.hrtime([0,0])", { filename: "[eval]" });\x0a\x0a} | |
| ----------------------------------------- | |
| } | |
| [8]: _compile [module.js:428] (this=0x3598f7121d39 <a Module with map 0x2f271e236129>#6#,content=0x3598f7124e79 <String[224]\: global.__filename = "[eval]";\nglobal.exports = exports;\nglobal.module = module;\nglobal.__dirname = __dirname;\nglobal.require = require;\nreturn require("vm").runInThisContext("process.hrtime([0,0])", { filename: "[eval]" });\n>,filename=0x3598f7125e81 <String[14]: [eval]-wrapper>) { | |
| // stack-allocated locals | |
| var require = 0x3598f7126069 <JS Function require (SharedFunctionInfo 0x1ce87c960f41)>#5# | |
| var dirname = 0x2c8500104cc1 <String[1]: .> | |
| var wrapper = 0x3598f71271c9 <String[290]\: (function (exports, require, module, __filename, __dirname) { global.__filename = "[eval]";\nglobal.exports = exports;\nglobal.module = module;\nglobal.__dirname = __dirname;\nglobal.require = require;\nreturn require("vm").runInThisContext("process.hrtime([0,0])", { filename: "[eval]" });\n\n});> | |
| var compiledWrapper = 0x3598f7127481 <JS Function (SharedFunctionInfo 0x1ce87c9619b9)>#14# | |
| var args = 0x3598f7127521 <JS Array[5]>#15# | |
| // heap-allocated locals | |
| var self = 0x3598f7121d39 <a Module with map 0x2f271e236129>#6# | |
| // expression stack (top to bottom) | |
| [08] : 0x3598f7127521 <JS Array[5]>#15# | |
| [07] : 0x3598f7121e51 <an Object with map 0x2f271e205ed1>#4# | |
| [06] : 0x3598f7127481 <JS Function (SharedFunctionInfo 0x1ce87c9619b9)>#14# | |
| [05] : 0x2a416765ec81 <JS Function apply (SharedFunctionInfo 0x2a416765ebe9)>#16# | |
| --------- s o u r c e c o d e --------- | |
| function (content, filename) {\x0a var self = this;\x0a // remove shebang\x0a content = content.replace(/^\#\!.*/, '');\x0a\x0a function require(path) {\x0a return self.require(path);\x0a }\x0a\x0a require.resolve = function(request) {\x0a return Module._resolveFilename(request, self);\x0a };\x0a\x0a Object.defineProperty(require, '... | |
| ----------------------------------------- | |
| } | |
| [9]: /* anonymous */(aka /* anonymous */) [node.js:567] (this=0x2a4167604121 <undefined>) { | |
| // stack-allocated locals | |
| var result = 0x2a4167604121 <undefined> | |
| // expression stack (top to bottom) | |
| [04] : 0x3598f7125e81 <String[14]: [eval]-wrapper> | |
| [03] : 0x3598f7124e79 <String[224]\: global.__filename = "[eval]";\nglobal.exports = exports;\nglobal.module = module;\nglobal.__dirname = __dirname;\nglobal.require = require;\nreturn require("vm").runInThisContext("process.hrtime([0,0])", { filename: "[eval]" });\n> | |
| [02] : 0x3598f7121d39 <a Module with map 0x2f271e236129>#6# | |
| [01] : 0x1ce87c95eb99 <JS Function Module._compile (SharedFunctionInfo 0x1ce87c94b7f1)>#17# | |
| --------- s o u r c e c o d e --------- | |
| function () {\x0a var result = module._compile(script, name + '-wrapper');\x0a if (process._print_eval) console.log(result);\x0a } | |
| ----------------------------------------- | |
| } | |
| [10]: doNTCallback0(aka doNTCallback0) [node.js:408] (this=0x2a4167604121 <undefined>,callback=0x3598f7124ea1 <JS Function (SharedFunctionInfo 0x1ce87c94ab59)>#7#) { | |
| // stack-allocated locals | |
| var threw = 0x2a4167604141 <true> | |
| // expression stack (top to bottom) | |
| [07] : 0x2a4167604121 <undefined> | |
| [06] : 0x3598f7124ea1 <JS Function (SharedFunctionInfo 0x1ce87c94ab59)>#7# | |
| --------- s o u r c e c o d e --------- | |
| function doNTCallback0(callback) {\x0a var threw = true;\x0a try {\x0a callback();\x0a threw = false;\x0a } finally {\x0a if (threw)\x0a tickDone();\x0a }\x0a } | |
| ----------------------------------------- | |
| } | |
| [11]: _tickCallback [node.js:337] (this=0x2a416766ce31 <a process with map 0x2f271e213371>#8#) { | |
| // stack-allocated locals | |
| var callback = 0x3598f7124ea1 <JS Function (SharedFunctionInfo 0x1ce87c94ab59)>#7# | |
| var args = 0x2a4167604121 <undefined> | |
| var tock = 0x3598f7125319 <a TickObject with map 0x2f271e236291>#18# | |
| // expression stack (top to bottom) | |
| [05] : 0x3598f7124ea1 <JS Function (SharedFunctionInfo 0x1ce87c94ab59)>#7# | |
| [04] : 0x2a4167604121 <undefined> | |
| [03] : 0x3598f70c4031 <JS Function doNTCallback0 (SharedFunctionInfo 0x1ce87c948941)>#19# | |
| --------- s o u r c e c o d e --------- | |
| function _tickCallback() {\x0a var callback, args, tock;\x0a\x0a do {\x0a while (tickInfo[kIndex] < tickInfo[kLength]) {\x0a tock = nextTickQueue[tickInfo[kIndex]++];\x0a callback = tock.callback;\x0a args = tock.args;\x0a // Using separate callback execution functions helps to limit the\x0a ... | |
| ----------------------------------------- | |
| } | |
| ==== Key ============================================ | |
| #0# 0x2a4167618d61: 0x2a4167618d61 <JS Object> | |
| #1# 0x2a416766cf59: 0x2a416766cf59 <JS Global Object> | |
| #2# 0x3598f70043b9: 0x3598f70043b9 <an Object with map 0x2f271e218081> | |
| #3# 0x3598f7127ab1: 0x3598f7127ab1 <an Object with map 0x2f271e212cf9> | |
| filename: 0x2c850012d921 <String[6]: [eval]> | |
| #4# 0x3598f7121e51: 0x3598f7121e51 <an Object with map 0x2f271e205ed1> | |
| #5# 0x3598f7126069: 0x3598f7126069 <JS Function require (SharedFunctionInfo 0x1ce87c960f41)> | |
| main: 0x2a4167604121 <undefined> | |
| extensions: 0x3598f711f291 <an Object with map 0x2f271e235d39>#20# | |
| cache: 0x3598f711efa1 <an Object with map 0x2f271e205ed1>#21# | |
| #6# 0x3598f7121d39: 0x3598f7121d39 <a Module with map 0x2f271e236129> | |
| id: 0x2c850012d921 <String[6]: [eval]> | |
| exports: 0x3598f7121e51 <an Object with map 0x2f271e205ed1>#4# | |
| parent: 0x2a4167604121 <undefined> | |
| filename: 0x3598f7122d49 <String[48]: /usr/local/google/home/ofrobots/src/io.js/[eval]> | |
| loaded: 0x2a4167604161 <false> | |
| children: 0x3598f7122121 <JS Array[0]>#22# | |
| paths: 0x3598f7123191 <JS Array[8]>#23# | |
| #7# 0x3598f7124ea1: 0x3598f7124ea1 <JS Function (SharedFunctionInfo 0x1ce87c94ab59)> | |
| #8# 0x2a416766ce31: 0x2a416766ce31 <a process with map 0x2f271e213371> | |
| #9# 0x2a4167662969: 0x2a4167662969 <JS Function hrtime (SharedFunctionInfo 0x2a41676628d1)> | |
| #10# 0x3598f7127c31: 0x3598f7127c31 <JS Array[2]> | |
| #11# 0x3598f7127ae1: 0x3598f7127ae1 <a ContextifyScript with map 0x2f271e211fc1> | |
| #12# 0x2a4167665bf1: 0x2a4167665bf1 <JS Function runInThisContext (SharedFunctionInfo 0x2a4167665b59)> | |
| #13# 0x2a41676dc811: 0x2a41676dc811 <JS Function exports.runInThisContext (SharedFunctionInfo 0x2a41676dc319)> | |
| #14# 0x3598f7127481: 0x3598f7127481 <JS Function (SharedFunctionInfo 0x1ce87c9619b9)> | |
| #15# 0x3598f7127521: 0x3598f7127521 <JS Array[5]> | |
| 0: 0x3598f7121e51 <an Object with map 0x2f271e205ed1>#4# | |
| 1: 0x3598f7126069 <JS Function require (SharedFunctionInfo 0x1ce87c960f41)>#5# | |
| 2: 0x3598f7121d39 <a Module with map 0x2f271e236129>#6# | |
| 3: 0x3598f7125e81 <String[14]: [eval]-wrapper> | |
| 4: 0x2c8500104cc1 <String[1]: .> | |
| #16# 0x2a416765ec81: 0x2a416765ec81 <JS Function apply (SharedFunctionInfo 0x2a416765ebe9)> | |
| #17# 0x1ce87c95eb99: 0x1ce87c95eb99 <JS Function Module._compile (SharedFunctionInfo 0x1ce87c94b7f1)> | |
| #18# 0x3598f7125319: 0x3598f7125319 <a TickObject with map 0x2f271e236291> | |
| domain: 0x2a4167604101 <null> | |
| args: 0x2a4167604121 <undefined> | |
| #19# 0x3598f70c4031: 0x3598f70c4031 <JS Function doNTCallback0 (SharedFunctionInfo 0x1ce87c948941)> | |
| #20# 0x3598f711f291: 0x3598f711f291 <an Object with map 0x2f271e235d39> | |
| #21# 0x3598f711efa1: 0x3598f711efa1 <an Object with map 0x2f271e205ed1> | |
| #22# 0x3598f7122121: 0x3598f7122121 <JS Array[0]> | |
| #23# 0x3598f7123191: 0x3598f7123191 <JS Array[8]> | |
| 0: 0x3598f7123fb9 <String[54]: /usr/local/google/home/ofrobots/src/io.js/node_modules> | |
| 1: 0x3598f7124309 <String[48]: /usr/local/google/home/ofrobots/src/node_modules> | |
| 2: 0x3598f7124459 <String[44]: /usr/local/google/home/ofrobots/node_modules> | |
| 3: 0x3598f7124599 <String[35]: /usr/local/google/home/node_modules> | |
| 4: 0x3598f71246c1 <String[30]: /usr/local/google/node_modules> | |
| 5: 0x3598f71247d1 <String[23]: /usr/local/node_modules> | |
| 6: 0x3598f71248c9 <String[17]: /usr/node_modules> | |
| 7: 0x3598f71249b1 <String[13]: /node_modules> | |
| ===================== | |
| $1 = void | |
| # Let us the print the 'this' JS object in the top JS function | |
| (gdb) job 0x2a416766cf59 | |
| global_proxy 0x2a416766cf59: [JSObject] | |
| - map = 0x2f271e20ed21 [FAST_HOLEY_SMI_ELEMENTS] | |
| - prototype = 0x2a4167618d61 | |
| { | |
| } | |
| native context : 0x2a416766caa1 <FixedArray[112]> | |
| $2 = void | |
| # Let's print that native context array | |
| (gdb) job 0x2a416766caa1 | |
| 0x2a416766caa1: [FixedArray] | |
| - length: 112 | |
| [0]: 0x2a4167618749 <JS Function Empty (SharedFunctionInfo 0x2a41676186b1)> | |
| [1]: 0 | |
| [2]: 0x2a4167618d61 <JS Object> | |
| [3]: 0x2a4167618d61 <JS Object> | |
| [4]: 0x2a416766cf59 <JS Global Object> | |
| [5]: 0x2a4167618d61 <JS Object> | |
| [6]: 0x2f271e207119 <Map(elements=3)> | |
| [7]: 0x2f271e207161 <Map(elements=7)> | |
| [8]: 0x2f271e2071a9 <Map(elements=3)> | |
| [9]: 0x2f271e20ecd9 <Map(elements=3)> | |
| [10]: 0x2f271e205df9 <Map(elements=3)> | |
| [11]: 0x2f271e205db1 <Map(elements=3)> | |
| [12]: 0x2f271e205ff1 <Map(elements=3)> | |
| [13]: 0x2f271e205d69 <Map(elements=3)> | |
| [14]: 0x2f271e205f61 <Map(elements=3)> | |
| [15]: 0x2f271e206039 <Map(elements=3)> | |
| [16]: 0x2a4167618679 <an Object with map 0x2f271e207fb9> | |
| [17]: 0x2a41676a99d1 <JS Array[0]> | |
| [18]: 0x2a41676192c1 <JS Function Boolean (SharedFunctionInfo 0x2a4167619229)> | |
| [19]: 0x2a41676191e1 <JS Function Number (SharedFunctionInfo 0x2a4167619149)> | |
| [20]: 0x2a41676193a1 <JS Function String (SharedFunctionInfo 0x2a4167619309)> | |
| [21]: 0x2f271e20ec01 <Map(elements=1)> | |
| [22]: 0x2a41676194b9 <JS Function Symbol (SharedFunctionInfo 0x2a4167619421)> | |
| [23]: 0x2a4167618631 <JS Function Object (SharedFunctionInfo 0x2a4167618599)> | |
| [24]: 0x2a416761b6a9 <JS Function InternalArray (SharedFunctionInfo 0x2a416761b611)> | |
| [25]: 0x2a4167618fe9 <JS Function Array (SharedFunctionInfo 0x2a4167618f51)> | |
| [26]: 0x2a416761ef89 <FixedArray[26]> | |
| [27]: 0x2a4167619599 <JS Function Date (SharedFunctionInfo 0x2a4167619501)> | |
| [28]: 0x2a41676197d9 <a JSON with map 0x2f271e20df11> | |
| [29]: 0x2a4167619679 <JS Function RegExp (SharedFunctionInfo 0x2a41676195e1)> | |
| [30]: 0x2a4167637729 <JS Function CreateDate (SharedFunctionInfo 0x2a4167635bc9)> | |
| [31]: 0x2a416761e9a9 <JS Function ToNumber (SharedFunctionInfo 0x2a416761d0d1)> | |
| [32]: 0x2a416761ea79 <JS Function ToString (SharedFunctionInfo 0x2a416761d201)> | |
| [33]: 0x2a4167653d41 <JS Function ToDetailString (SharedFunctionInfo 0x2a416764d761)> | |
| [34]: 0x2a416761eb91 <JS Function ToObject (SharedFunctionInfo 0x2a416761d3c9)> | |
| [35]: 0x2a416761ebf9 <JS Function ToInteger (SharedFunctionInfo 0x2a416761d461)> | |
| [36]: 0x2a416761ec89 <JS Function ToUint32 (SharedFunctionInfo 0x2a416761d591)> | |
| [37]: 0x2a416761ecd1 <JS Function ToInt32 (SharedFunctionInfo 0x2a416761d629)> | |
| [38]: 0x2a4167604121 <undefined> | |
| [39]: 0x2a4167624989 <JS Function eval (SharedFunctionInfo 0x2a4167620531)> | |
| [40]: 0x2a4167619889 <JS Function ArrayBuffer (SharedFunctionInfo 0x2a41676197f1)> | |
| [41]: 0x2a4167619969 <JS Function Uint8Array (SharedFunctionInfo 0x2a41676198d1)> | |
| [42]: 0x2a4167619a49 <JS Function Int8Array (SharedFunctionInfo 0x2a41676199b1)> | |
| [43]: 0x2a4167619b29 <JS Function Uint16Array (SharedFunctionInfo 0x2a4167619a91)> | |
| [44]: 0x2a4167619c09 <JS Function Int16Array (SharedFunctionInfo 0x2a4167619b71)> | |
| [45]: 0x2a4167619ce9 <JS Function Uint32Array (SharedFunctionInfo 0x2a4167619c51)> | |
| [46]: 0x2a4167619dc9 <JS Function Int32Array (SharedFunctionInfo 0x2a4167619d31)> | |
| [47]: 0x2a4167619ea9 <JS Function Float32Array (SharedFunctionInfo 0x2a4167619e11)> | |
| [48]: 0x2a4167619f89 <JS Function Float64Array (SharedFunctionInfo 0x2a4167619ef1)> | |
| [49]: 0x2a416761a069 <JS Function Uint8ClampedArray (SharedFunctionInfo 0x2a4167619fd1)> | |
| [50]: 0x2f271e206939 <Map(elements=8)> | |
| [51]: 0x2f271e206861 <Map(elements=9)> | |
| [52]: 0x2f271e206ae9 <Map(elements=10)> | |
| [53]: 0x2f271e206a11 <Map(elements=11)> | |
| [54]: 0x2f271e206c99 <Map(elements=12)> | |
| [55]: 0x2f271e206bc1 <Map(elements=13)> | |
| [56]: 0x2f271e206d71 <Map(elements=14)> | |
| [57]: 0x2f271e206e49 <Map(elements=15)> | |
| [58]: 0x2f271e206f21 <Map(elements=16)> | |
| [59]: 0x2a416761a149 <JS Function DataView (SharedFunctionInfo 0x2a416761a0b1)> | |
| [60]: 0x2a41676c37b1 <JS Object> | |
| [61]: 0x2a4167604121 <undefined> | |
| [62]: 0x2a4167654559 <JS Function GetStackTraceLine (SharedFunctionInfo 0x2a416764e769)> | |
| [63]: 0x2a4167604121 <undefined> | |
| [64]: 0x2a416766d7c9 <FixedArray[1027]> | |
| [65]: 0x2a416761a8c1 <FixedArray[1]> | |
| [66]: 0x2a416761aa09 <FixedArray[64]> | |
| [67]: 0x2a416768fa39 <FixedArray[4]> | |
| [68]: 0x2a416761a799 <JS Function (SharedFunctionInfo 0x2a416761a701)> | |
| [69]: 0x2a416761a879 <JS Function (SharedFunctionInfo 0x2a416761a7e1)> | |
| [70]: 0x2a416761b081 <JS Function Script (SharedFunctionInfo 0x2a416761afe9)> | |
| [71]: 0x2a416761b559 <JS Function OpaqueReference (SharedFunctionInfo 0x2a416761b4c1)> | |
| [72]: 0x2a416761a6b9 <JS Function (SharedFunctionInfo 0x2a416761a621)> | |
| [73]: 0x2a4167604121 <undefined> | |
| [74]: 0x2a41676c37c9 <FixedArray[33]> | |
| [75]: 0x2a4167604121 <undefined> | |
| [76]: 0x2a4167604121 <undefined> | |
| [77]: 0x2a4167604121 <undefined> | |
| [78]: 0x2a4167604121 <undefined> | |
| [79]: 0x2a41676c13c1 <JS Function IsPromise (SharedFunctionInfo 0x2a416764ca61)> | |
| [80]: 0x2a41676c1431 <JS Function PromiseCreate (SharedFunctionInfo 0x2a416764caf9)> | |
| [81]: 0x2a41676c14a1 <JS Function PromiseResolve (SharedFunctionInfo 0x2a416764cb91)> | |
| [82]: 0x2a41676c1511 <JS Function PromiseReject (SharedFunctionInfo 0x2a416764cc29)> | |
| [83]: 0x2a41676c1581 <JS Function chain (SharedFunctionInfo 0x2a416764ccc1)> | |
| [84]: 0x2a41676c15f1 <JS Function catch (SharedFunctionInfo 0x2a416764cd59)> | |
| [85]: 0x2a41676c1661 <JS Function then (SharedFunctionInfo 0x2a416764cdf1)> | |
| [86]: 0x2a4167624fc9 <JS Function ToCompletePropertyDescriptor (SharedFunctionInfo 0x2a4167621111)> | |
| [87]: 0x2a4167604121 <undefined> | |
| [88]: 0x2a4167604121 <undefined> | |
| [89]: 0x2a4167604121 <undefined> | |
| [90]: 0x2a4167604121 <undefined> | |
| [91]: 0x2a4167646f41 <JS Function NotifyChange (SharedFunctionInfo 0x2a4167645571)> | |
| [92]: 0x2a4167646ed9 <JS Function EnqueueSpliceRecord (SharedFunctionInfo 0x2a41676454d9)> | |
| [93]: 0x2a4167646e49 <JS Function BeginPerformSplice (SharedFunctionInfo 0x2a41676453a9)> | |
| [94]: 0x2a4167646e91 <JS Function EndPerformSplice (SharedFunctionInfo 0x2a4167645441)> | |
| [95]: 0x2a4167646bb9 <JS Function NativeObjectObserve (SharedFunctionInfo 0x2a4167644f81)> | |
| [96]: 0x2a4167647141 <JS Function NativeObjectGetNotifier (SharedFunctionInfo 0x2a4167645869)> | |
| [97]: 0x2a4167647089 <JS Function NativeObjectNotifierPerformChange (SharedFunctionInfo 0x2a4167645739)> | |
| [98]: 0x2f271e207af1 <Map(elements=3)> | |
| [99]: 0x2f271e207b39 <Map(elements=3)> | |
| [100]: 0x2f271e207b81 <Map(elements=3)> | |
| [101]: 0x2f271e207041 <Map(elements=3)> | |
| [102]: 0x2f271e207941 <Map(elements=1)> | |
| [103]: 0x2f271e2078f9 <Map(elements=1)> | |
| [104]: 0x2a416765dc89 <JS Function ArrayValues (SharedFunctionInfo 0x2a416765d571)> | |
| [105]: 0x2a41676c38e1 <FixedArray[1]> | |
| [106]: 0x2a416762b201 <FixedArray[128]> | |
| [107]: 0x2a416761ec41 <JS Function ToLength (SharedFunctionInfo 0x2a416761d4f9)> | |
| [108]: 0x2a4167604121 <undefined> | |
| [109]: 0x2a4167604121 <undefined> | |
| [110]: 0x2a4167604121 <undefined> | |
| [111]: 0x2a4167604121 <undefined> | |
| $3 = void | |
| # Let us print the ToLength function at index 107 | |
| (gdb) job 0x2a416761ec41 | |
| 0x2a416761ec41: [Function] | |
| - map = 0x2f271e205db1 | |
| - initial_map = | |
| - shared_info = 0x2a416761d4f9 <SharedFunctionInfo ToLength> | |
| - name = 0x2c850010e889 <String[8]: ToLength> | |
| - context = 0x2a416768fa39 <FixedArray[4]> | |
| - literals = 0x2c8500104101 <FixedArray[0]> | |
| - code = 0x291f41115581 <Code: BUILTIN> | |
| #length: 0x2a4167618369 <ExecutableAccessorInfo> (accessor constant) | |
| #name: 0x2a41676183a1 <ExecutableAccessorInfo> (accessor constant) | |
| #arguments: 0x2a41676183d9 <ExecutableAccessorInfo> (accessor constant) | |
| #caller: 0x2a4167618411 <ExecutableAccessorInfo> (accessor constant) | |
| #prototype: 0x2a4167618449 <ExecutableAccessorInfo> (accessor constant) | |
| $4 = void | |
| # Ah, it is a builtin function. Let's look at it. | |
| (gdb) job 0x291f41115581 | |
| 0x291f41115581: [Code] | |
| kind = BUILTIN | |
| Instructions (size = 56) | |
| 0x291f411155e0 0 55 push rbp | |
| 0x291f411155e1 1 4889e5 REX.W movq rbp,rsp | |
| 0x291f411155e4 4 56 push rsi | |
| 0x291f411155e5 5 4533d2 xorl r10,r10 | |
| 0x291f411155e8 8 4f8d14e2 REX.W leaq r10,[r10+r12*8] | |
| 0x291f411155ec 12 4152 push r10 | |
| 0x291f411155ee 14 49ba815511411f290000 REX.W movq r10,CompileLazy (0x291f41115581) ;; object: 0x291f41115581 <Code: BUILTIN> | |
| 0x291f411155f8 24 4152 push r10 | |
| 0x291f411155fa 26 57 push rdi | |
| 0x291f411155fb 27 57 push rdi | |
| 0x291f411155fc 28 b801000000 movl rax,0x1 | |
| 0x291f41115601 33 498d9d2faa9afe REX.W leaq rbx,[r13-0x16555d1] | |
| 0x291f41115608 40 e8530affff call 0x291f41106060 ;; code: STUB, CEntryStub, minor: 0 | |
| 0x291f4111560d 45 5f pop rdi | |
| 0x291f4111560e 46 488be5 REX.W movq rsp,rbp | |
| 0x291f41115611 49 5d pop rbp | |
| 0x291f41115612 50 488d405f REX.W leaq rax,[rax+0x5f] | |
| 0x291f41115616 54 ffe0 jmp rax | |
| RelocInfo (size = 2) | |
| 0x291f411155f0 embedded object (0x291f41115581 <Code: BUILTIN>) | |
| 0x291f41115609 code target (STUB) (0x291f41106060) | |
| $5 = void |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment