6fdd480ed4
BUG= Review-Url: https://codereview.chromium.org/2537523002 Cr-Commit-Position: refs/heads/master@{#41326}
109 lines
2.5 KiB
Plaintext
109 lines
2.5 KiB
Plaintext
# Copyright 2014 the V8 project authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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# Print HeapObjects.
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define job
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call _v8_internal_Print_Object((void*)($arg0))
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end
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document job
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Print a v8 JavaScript object
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Usage: job tagged_ptr
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end
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# Print Code objects containing given PC.
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define jco
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call _v8_internal_Print_Code((void*)($arg0))
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end
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document jco
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Print a v8 Code object from an internal code address
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Usage: jco pc
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end
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# Print TypeFeedbackVector
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define jfv
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call _v8_internal_Print_TypeFeedbackVector((void*)($arg0))
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end
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document jfv
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Print a v8 TypeFeedbackVector object
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Usage: jtv tagged_ptr
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end
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# Print DescriptorArray.
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define jda
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call _v8_internal_Print_DescriptorArray((void*)($arg0))
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end
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document jda
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Print a v8 DescriptorArray object
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Usage: jda tagged_ptr
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end
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# Print LayoutDescriptor.
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define jld
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call _v8_internal_Print_LayoutDescriptor((void*)($arg0))
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end
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document jld
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Print a v8 LayoutDescriptor object
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Usage: jld tagged_ptr
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end
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# Print TransitionArray.
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define jta
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call _v8_internal_Print_TransitionArray((void*)($arg0))
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end
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document jta
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Print a v8 TransitionArray object
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Usage: jta tagged_ptr
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end
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# Print JavaScript stack trace.
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define jst
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call _v8_internal_Print_StackTrace()
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end
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document jst
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Print the current JavaScript stack trace
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Usage: jst
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end
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# Skip the JavaScript stack.
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define jss
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set $js_entry_sp=v8::internal::Isolate::Current()->thread_local_top()->js_entry_sp_
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set $rbp=*(void**)$js_entry_sp
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set $rsp=$js_entry_sp + 2*sizeof(void*)
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set $pc=*(void**)($js_entry_sp+sizeof(void*))
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end
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document jss
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Skip the jitted stack on x64 to where we entered JS last.
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Usage: jss
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end
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# Print stack trace with assertion scopes.
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define bta
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python
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import re
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frame_re = re.compile("^#(\d+)\s*(?:0x[a-f\d]+ in )?(.+) \(.+ at (.+)")
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assert_re = re.compile("^\s*(\S+) = .+<v8::internal::Per\w+AssertType::(\w+)_ASSERT, (false|true)>")
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btl = gdb.execute("backtrace full", to_string = True).splitlines()
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for l in btl:
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match = frame_re.match(l)
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if match:
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print("[%-2s] %-60s %-40s" % (match.group(1), match.group(2), match.group(3)))
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match = assert_re.match(l)
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if match:
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if match.group(3) == "false":
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prefix = "Disallow"
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color = "\033[91m"
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else:
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prefix = "Allow"
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color = "\033[92m"
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print("%s -> %s %s (%s)\033[0m" % (color, prefix, match.group(2), match.group(1)))
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end
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end
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document bta
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Print stack trace with assertion scopes
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Usage: bta
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end
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set disassembly-flavor intel
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set disable-randomization off
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