nnosov
80018f8808
use CFA derived from DWARF info instad of libunwind caller's SP since
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libunwind don't show right SP for callers in shared objects
2020-01-24 16:54:05 +04:00
nnosov
48f37ec3e8
better logging formatting, print_registers()
2020-01-24 15:45:33 +04:00
nnosov
952b71d9d3
bunch of changes. mainly is: got right CFA from both libunwind & libdw
2020-01-23 19:49:51 +04:00
nnosov
dcfbcd0952
implemented base support of DWARF lexical block and call site
2020-01-17 09:44:59 +04:00
nnosov
1e395e5cac
fix for find dwarf CU for function, fix for find library base address
2020-01-16 16:51:36 +04:00
nnosov
ba9db80f07
introduce parent frame
2020-01-16 16:22:17 +04:00
nnosov
ab58889d93
better debug messaging
2020-01-16 15:30:05 +04:00
nnosov
1cddd773bc
use two stage unwinding: 1st is simply detection of function name using
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libunwind and save functions cursor. 2nd - use dwarf information to cath
as more info as possible. this approach also allows to dereference
DW_OP_GNU_value operation since it need access to caller frame from
callee context
2020-01-16 14:54:42 +04:00
nnosov
132e0d3854
temporary extract from pst_parameter location dwarf handling to
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handle_location()
2020-01-16 12:33:07 +04:00
nnosov
a60045d9f4
do not handle return parameter value since it's unaccessible in stack
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trace (no functions returns)
2020-01-14 19:28:38 +04:00
nnosov
e2bdd31cef
use internal linkedlist implementation instead of std::list,
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std::vector. make stack trace a bit more complex
2020-01-14 18:03:11 +04:00
nnosov
b49318cd11
retrieve return value of function, show frame number on print
2020-01-14 16:57:21 +04:00
nnosov
4bc8c15918
take care that parameter may have 'undefined' or 'constant' values
2020-01-14 14:54:47 +04:00
nnosov
2b3db0f936
better and more dwarf info printing
2020-01-14 14:20:03 +04:00
nnosov
eb9dc1341d
introduce printing functions and their parameters on base of dwarf info
2020-01-14 13:47:08 +04:00
nnosov
fc6a81b460
move calc_expression() & get_value() from context to DWARF stack
2020-01-14 12:21:00 +04:00
nnosov
5ee3935dc2
move out value retrieval from expression evaluation. add get_value()
2020-01-14 11:48:08 +04:00
nnosov
a1954685e5
add suppoert of dw_op_fbreg & dw_op_call_frame_cfa DWARF operations and
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use them
2020-01-13 18:37:56 +04:00
nnosov
50bebda6a1
initial implementation of DWARF Expression state machine parsing and
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it's usage for retrieve arguments/variables of function
2020-01-13 17:21:46 +04:00
nnosov
08ba87ce98
raw and dirty implementation of handling of constant, stack,
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arithmetical and logical operations on DWARF expression stack machine
2020-01-11 18:56:03 +04:00
nnosov
58f14a695d
extract context from handler and move it to common. define functions to
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use in calculation of DWARF expressions
2020-01-11 14:56:45 +04:00
nnosov
8f7fed23dc
global refactoring: use libunwind to get stack frame, get rid on process
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base address, better DWARF DW_OP_XXX handling, initial implementation of
parameter's values retrieval
2020-01-09 18:49:45 +04:00
nnosov
83fc2bc3ef
beterr DWARF expressions logging, trying to get CFI info for registers
2020-01-05 12:29:18 +04:00
nnosov
1f3a6237ac
pstrace: initial commit
2020-01-04 14:28:08 +04:00
nnosov