kcbanner
661028a907
target: emit unwind tables if the platform supports unwinding
2023-07-26 20:58:29 -04:00
kcbanner
49fa3a987f
reduce the number of duplicate instantiations due to differing stream parameters
2023-07-25 00:45:47 -04:00
kcbanner
ab2e0b927d
switch to sortUnstable when sorting FDEs (~16ms improvement)
2023-07-24 23:27:05 -04:00
kcbanner
b1d86db7b4
dwarf: move macho unwind code from macho -> dwarf
...
dwarf: fixup unchecked .eh_frame CIE offset subtraction
2023-07-20 22:58:16 -04:00
kcbanner
8e6a62ba10
test: disable omit_frame_pointer unwinding tests on aarch64-macos
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dwarf: handle signal frame CIE flag
2023-07-20 22:58:16 -04:00
kcbanner
6d87bb370a
debug: disable the new unwinder on aarch64-macos
2023-07-20 22:58:16 -04:00
kcbanner
253e6971ad
dwarf: implement aarch64 default register rules
2023-07-20 22:58:16 -04:00
kcbanner
4421b14878
dwarf: fixup rules for setting ip
2023-07-20 22:58:16 -04:00
kcbanner
2bc2b01dbc
dwarf: update the pc register
2023-07-20 22:58:16 -04:00
kcbanner
d99b40d38b
dwarf: fix the unwinder using the incorrect row from the FDE in certain cases
2023-07-20 22:58:16 -04:00
kcbanner
1a2bb70956
dwarf: write the CFA as SP before the register update, in case the SP itself is updated by a column rule
2023-07-20 22:58:16 -04:00
kcbanner
97bda56306
macho: don't scan all eh_frame entries, instead follow the offset from the __unwind_info directly
2023-07-20 22:58:16 -04:00
kcbanner
774dc2fdb7
dwarf: add explicit_fde_offset to support more optimal __unwind_info dwarf lookups
2023-07-20 22:58:16 -04:00
kcbanner
618b0eb3d3
dwarf: fixup integer overflow in readEhPointer
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debug: handle the possibility of eh_frame / debug_frame being mapped in memory or loaded from disk
2023-07-20 22:58:16 -04:00
kcbanner
ba813d00f5
dwarf: add abi.stripInstructionPtrAuthCode
2023-07-20 22:58:16 -04:00
kcbanner
b18031335a
dwarf: use cie.return_address_register instead of assuming it's in the IP register
2023-07-20 22:58:16 -04:00
kcbanner
891fa3b8b5
debug: fix initialization of the optional fields on StackIterator
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dwarf: documentation fixups
target: enable unwind tables on macho
2023-07-20 22:58:15 -04:00
kcbanner
94354aa6aa
macho: add unwindFrame which can unwind stack frames using the __unwind_info section
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dwarf: fixup missing error
2023-07-20 22:58:15 -04:00
kcbanner
d226b74ae8
dwarf: add ExpressionError to work around the compiler not being able to infer it
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dwarf: implement OP.entry_value, add tests
2023-07-20 22:58:15 -04:00
kcbanner
21d0154139
dwarf: skip register tests on unimplemented arch / os, add tests for type convesions
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debug: dupeContext -> copyContext
2023-07-20 22:58:15 -04:00
kcbanner
54ca62fef4
dwarf: fixup regBytes for the case where there is no context support
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expressions: add more tests, fix tests for mipsel
debug: add lookupModuleName implementation for macos
2023-07-20 22:58:15 -04:00
kcbanner
5c0d4cef1a
debug: add dupeContext, store a pointer to a copy of ThreadContext on UnwindContext
2023-07-20 22:58:15 -04:00
kcbanner
5f72c6508d
debug: rename StackTraceContext to ThreadContext
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dwarf: use ThreadContext instead of os.ucontext_t
dwarf: add regBytes impl for windows
dwarf: fixup expression types for non-native
2023-07-20 22:58:15 -04:00
kcbanner
8547c42ba5
dwarf: expression fixups for non-64bit arches, check call_frame_context when writing expressions
2023-07-20 22:58:15 -04:00
kcbanner
ad5f74c0b1
dwarf: introduce ExpressionContext, add more expression opcodes
2023-07-20 22:58:14 -04:00
kcbanner
412cd789bf
debug: fixup base address calculations for macho
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dwarf: fixup x86 register mapping logic
dwarf: change the register context update to update in-place instead of copying
debug: always print the unwind error type
2023-07-20 22:58:14 -04:00
kcbanner
b85f84061a
dwarf: don't dupe function names, as they are backed by the memory mapped sections
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dwarf: const-correctness fixups
dwarf: implement the remaining register rules
dwarf: start implmenting the DWARF expression stack machine
2023-07-20 22:58:14 -04:00
kcbanner
62598c2187
debug: rework how unwind errors are printed, and add module name lookup for linux
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This change enhances stack trace output to include a note that debug info was missing,
and therefore the stack trace may not be accurate. For example, if the user is using a libc
compiled with -fomit-frame-pointer and doesn't have debug symbols installed, any traces
that begin in a libc function may not unwind correctly. This allows the user to notice this and
potentially install debug symbols to improve the output.
2023-07-20 22:58:14 -04:00
kcbanner
f04f9705cc
dwarf: add support for DWARF5 DW_AT_ranges in subprograms, add DebugRangeIterator
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Some DWARF5 subprograms have non-contiguous instruction ranges. An example of such
a function is `puts` in Ubuntu's libc. This change fixes name lookups for functions that use
DW_AT_range in their DIE.
2023-07-20 22:58:14 -04:00
kcbanner
395ab474eb
dwarf: fix logic error in eh_frame_hdry binary search
2023-07-20 22:58:14 -04:00
kcbanner
89ef004646
debug: x86 unwinding support, more unwinding fixes
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- Fix unwindFrame using the previous FDE row instead of the current one
- Handle unwinding through noreturn functions
- Add x86-linux getcontext
- Fixup x86_64-linux getcontext not restoring the fp env
- Fix start_addr filtering on x86-windows
2023-07-20 22:58:14 -04:00
kcbanner
a9b6f2d929
dwarf: add support for .debug_frame and CIE version 4
2023-07-20 22:58:14 -04:00
kcbanner
6abf1fbfe6
update to new builtin syntax
2023-07-20 22:58:14 -04:00
kcbanner
84a1244b6c
dwarf: use eh_frame length if it's available
2023-07-20 22:58:14 -04:00
kcbanner
521988299d
add more safety checks when searching for eh_frame entries using findEntry
2023-07-20 22:58:13 -04:00
kcbanner
a47212c72e
- rebase and update to lastest master
2023-07-20 22:58:13 -04:00
kcbanner
adbc5bbdb3
dwarf: fixup pointer cast
2023-07-20 22:58:13 -04:00
kcbanner
5781016c35
dwarf: add support for .eh_frame_hdr when unwinding
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- .eh_frame_hdr contains a binary-searchable data structure for finding an FDE. If present, we can use this
section to avoid having to parse the entire FDE/CIE list in the binary, instead only entries that are actually
required for unwinding are read.
- rework the inputs pc-relative pointer decoding to support both already-mapped sections as well as sections
mapped from a file
- store the VirtualMachine on UnwindContext so the allocations can be reused
2023-07-20 22:58:13 -04:00
kcbanner
5ebca4392e
debug: fixing more compile errors on arches that I hadn't tested on yet
2023-07-20 22:58:13 -04:00
kcbanner
551f153718
dwarf: fixes for non-64 bit systems
2023-07-20 22:58:13 -04:00
kcbanner
d74c8acdfb
dwarf: fixup for sort changes
2023-07-20 22:58:13 -04:00
kcbanner
a325d7f6d1
fmt and cleanup
2023-07-20 22:58:13 -04:00
kcbanner
e72e762d1e
dwarf: implement more register mappings, fix up macos compile
2023-07-20 22:58:13 -04:00
kcbanner
9145ff7da0
dwarf: implement more register number mappings
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- add dwarf.abi.RegisterContext to handle register numbers changing based on DWARF format
2023-07-20 22:58:13 -04:00
kcbanner
b449d98a93
- rework StackIterator to optionally use debug_info to unwind the stack
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- add abi routines for getting register values
- unwding is working!
2023-07-20 22:58:13 -04:00
kcbanner
69399fbb82
- add default register rule
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- fixup eh pointer decoding
2023-07-20 22:58:13 -04:00
kcbanner
7b4611cfb3
- move writing code to zig-dwarfdump
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- implement restore_state, restore_extended, offset_extended
2023-07-20 22:58:13 -04:00
kcbanner
8b8d627137
- add call frame instruction parser
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- add register printing
2023-07-20 22:58:13 -04:00
kcbanner
6c1d1aa45c
begin working on parsing unwind info
2023-07-20 22:58:13 -04:00
kcbanner
f6148f123e
add CommonInformationEntry parser
2023-07-20 22:58:12 -04:00
