diff options
Diffstat (limited to 'src/3rdparty/v8/tools/gdb-v8-support.py')
| -rw-r--r-- | src/3rdparty/v8/tools/gdb-v8-support.py | 154 |
1 files changed, 0 insertions, 154 deletions
diff --git a/src/3rdparty/v8/tools/gdb-v8-support.py b/src/3rdparty/v8/tools/gdb-v8-support.py deleted file mode 100644 index 9cc046c..0000000 --- a/src/3rdparty/v8/tools/gdb-v8-support.py +++ /dev/null @@ -1,154 +0,0 @@ -# Copyright 2011 the V8 project authors. All rights reserved. -# Redistribution and use in source and binary forms, with or without -# modification, are permitted provided that the following conditions are -# met: -# -# * Redistributions of source code must retain the above copyright -# notice, this list of conditions and the following disclaimer. -# * Redistributions in binary form must reproduce the above -# copyright notice, this list of conditions and the following -# disclaimer in the documentation and/or other materials provided -# with the distribution. -# * Neither the name of Google Inc. nor the names of its -# contributors may be used to endorse or promote products derived -# from this software without specific prior written permission. -# -# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - - -kSmiTag = 0 -kSmiTagSize = 1 -kSmiTagMask = (1 << kSmiTagSize) - 1 - - -kHeapObjectTag = 1 -kHeapObjectTagSize = 2 -kHeapObjectTagMask = (1 << kHeapObjectTagSize) - 1 - - -kFailureTag = 3 -kFailureTagSize = 2 -kFailureTagMask = (1 << kFailureTagSize) - 1 - - -kSmiShiftSize32 = 0 -kSmiValueSize32 = 31 -kSmiShiftBits32 = kSmiTagSize + kSmiShiftSize32 - - -kSmiShiftSize64 = 31 -kSmiValueSize64 = 32 -kSmiShiftBits64 = kSmiTagSize + kSmiShiftSize64 - - -kAllBits = 0xFFFFFFFF -kTopBit32 = 0x80000000 -kTopBit64 = 0x8000000000000000 - - -t_u32 = gdb.lookup_type('unsigned int') -t_u64 = gdb.lookup_type('unsigned long long') - - -def has_smi_tag(v): - return v & kSmiTagMask == kSmiTag - - -def has_failure_tag(v): - return v & kFailureTagMask == kFailureTag - - -def has_heap_object_tag(v): - return v & kHeapObjectTagMask == kHeapObjectTag - - -def raw_heap_object(v): - return v - kHeapObjectTag - - -def smi_to_int_32(v): - v = v & kAllBits - if (v & kTopBit32) == kTopBit32: - return ((v & kAllBits) >> kSmiShiftBits32) - 2147483648 - else: - return (v & kAllBits) >> kSmiShiftBits32 - - -def smi_to_int_64(v): - return (v >> kSmiShiftBits64) - - -def decode_v8_value(v, bitness): - base_str = 'v8[%x]' % v - if has_smi_tag(v): - if bitness == 32: - return base_str + (" SMI(%d)" % smi_to_int_32(v)) - else: - return base_str + (" SMI(%d)" % smi_to_int_64(v)) - elif has_failure_tag(v): - return base_str + " (failure)" - elif has_heap_object_tag(v): - return base_str + (" H(0x%x)" % raw_heap_object(v)) - else: - return base_str - - -class V8ValuePrinter(object): - "Print a v8value." - def __init__(self, val): - self.val = val - def to_string(self): - if self.val.type.sizeof == 4: - v_u32 = self.val.cast(t_u32) - return decode_v8_value(int(v_u32), 32) - elif self.val.type.sizeof == 8: - v_u64 = self.val.cast(t_u64) - return decode_v8_value(int(v_u64), 64) - else: - return 'v8value?' - def display_hint(self): - return 'v8value' - - -def v8_pretty_printers(val): - lookup_tag = val.type.tag - if lookup_tag == None: - return None - elif lookup_tag == 'v8value': - return V8ValuePrinter(val) - return None -gdb.pretty_printers.append(v8_pretty_printers) - - -def v8_to_int(v): - if v.type.sizeof == 4: - return int(v.cast(t_u32)) - elif v.type.sizeof == 8: - return int(v.cast(t_u64)) - else: - return '?' - - -def v8_get_value(vstring): - v = gdb.parse_and_eval(vstring) - return v8_to_int(v) - - -class V8PrintObject (gdb.Command): - """Prints a v8 object.""" - def __init__ (self): - super (V8PrintObject, self).__init__ ("v8print", gdb.COMMAND_DATA) - def invoke (self, arg, from_tty): - v = v8_get_value(arg) - gdb.execute('call __gdb_print_v8_object(%d)' % v) -V8PrintObject() |