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Breakpad: Add minidump processor support for DWARF Call Frame Information.

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Add a CFIFrameInfo class (named for symmetry with WindowsFrameInfo) to
represent the set of STACK CFI rules in effect at a given instruction,
and apply them to a set of register values. Provide a SimpleCFIWalker
class template, to allow the essential CFI code to be shared amongst
the different architectures.

Teach BasicSourceLineResolver to partially parse 'STACK CFI' records,
and produce the set of rules in effect at a given instruction on
demand, by combining the initial rule set and the appropriate rule
deltas in a CFIFrameInfo object.

Adapt StackwalkerX86 and StackFrameX86 to retrieve, store, and apply
CFI stack walking information.

Add validity flags for all the general-purpose registers to
StackFrameX86::ContextValidity.

a=jimblandy, r=mmentovai


git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@549 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
jimblandy 2010-03-16 16:28:32 +00:00
parent a7eb2329de
commit 6d3a825dbf
16 changed files with 1850 additions and 46 deletions
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6
src/processor/testdata/module1.out vendored
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@ -20,3 +20,9 @@ STACK WIN 4 1000 c 1 0 0 0 0 0 1 $eip 4 + ^ = $esp $ebp 8 + = $ebp $ebp ^ =
STACK WIN 4 1100 8 1 0 0 0 0 0 1 $eip 4 + ^ = $esp $ebp 8 + = $ebp $ebp ^ =
STACK WIN 4 1100 100 1 0 0 0 0 0 1 $eip 4 + ^ = $esp $ebp 8 + = $ebp $ebp ^ =
STACK WIN 4 1300 100 1 0 0 0 0 0 1 $eip 4 + ^ = $esp $ebp 8 + = $ebp $ebp ^ =
STACK CFI INIT 3d40 af .cfa: $esp 4 + .ra: .cfa 4 - ^
STACK CFI 3d41 .cfa: $esp 8 +
STACK CFI 3d43 .cfa: $ebp 8 + $ebp: .cfa 8 - ^
STACK CFI 3d54 $ebx: .cfa 20 - ^
STACK CFI 3d5a $esi: .cfa 16 - ^
STACK CFI 3d84 $edi: .cfa 12 - ^

6
src/processor/testdata/module2.out vendored
View file

@ -15,3 +15,9 @@ FUNC 2170 14 4 Function2_2
PUBLIC 21a0 0 Public2_2
STACK WIN 4 2000 c 1 0 0 0 0 0 1 $eip 4 + ^ = $esp $ebp 8 + = $ebp $ebp ^ =
STACK WIN 4 2170 14 1 0 0 0 0 0 1 $eip 4 + ^ = $esp $ebp 8 + = $ebp $ebp ^ =
STACK CFI INIT 3df0 af .cfa: $esp 4 + .ra: .cfa 4 - ^
STACK CFI 3df1 .cfa: $esp 8 +
STACK CFI 3df3 .cfa: $ebp 8 + $ebp: .cfa 8 - ^
STACK CFI 3e04 $ebx: .cfa 20 - ^
STACK CFI 3e0a $esi: .cfa 16 - ^
STACK CFI 3e34 $edi: .cfa 12 - ^