8171 Commits

Author	SHA1	Message	Date
Jakub Konka	61d5b7c957	Merge pull request #15823 from kcbanner/dwarf_unwind ... Add DWARF unwinding, and an external debug info loader for ELF	2023-07-21 17:37:22 +02:00
Jakub Konka	c43ee5bb22	Merge pull request #16456 from ziglang/check-object-more-elf ... std: dump .dynamic, .symtab, .dysym for ELF in `CheckObject`; remove wildcard matchers in favour of `checkContains` helper	2023-07-21 07:25:44 +02:00
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 ... 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	2c76020e77	debug: load the macho unwind sections from the already-mapped image	2023-07-20 22:58:16 -04:00
kcbanner	618b0eb3d3	dwarf: fixup integer overflow in readEhPointer ... 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	5e399d97d7	use eh_frame from the mapped binary if available	2023-07-20 22:58:16 -04:00
kcbanner	ba813d00f5	dwarf: add abi.stripInstructionPtrAuthCode	2023-07-20 22:58:16 -04:00
kcbanner	7d8b423477	macho: remove unnecessary checks	2023-07-20 22:58:16 -04:00
kcbanner	9549b4acf6	debug: fixup an inconsistency in the getcontext implementation on aarch64-macos	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	9b25bee42c	debug: fixup have_getcontext	2023-07-20 22:58:15 -04:00
kcbanner	e5aa2bb224	debug: fixup last_error being printed too many times	2023-07-20 22:58:15 -04:00
kcbanner	891fa3b8b5	debug: fix initialization of the optional fields on StackIterator ... dwarf: documentation fixups target: enable unwind tables on macho	2023-07-20 22:58:15 -04:00
kcbanner	5dfb159e15	macho: add aarch64 implementation to unwindFrame ... dwarf: map the V registers in abi.regBytes test: add test case that exercises the stack-indirect __unwind_info mode in x86_64	2023-07-20 22:58:15 -04:00
kcbanner	203d96ae97	debug: add relocateContext ... dwarf: fixup tests that used a ThreadContext	2023-07-20 22:58:15 -04:00
kcbanner	94354aa6aa	macho: add unwindFrame which can unwind stack frames using the __unwind_info section ... 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 ... 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 ... debug: dupeContext -> copyContext	2023-07-20 22:58:15 -04:00
kcbanner	021f537863	dwarf: fixup default endianness in ExpressionOptions, add control flow tests	2023-07-20 22:58:15 -04:00
kcbanner	54ca62fef4	dwarf: fixup regBytes for the case where there is no context support ... 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	463bbe7807	dwarf: implement constx,addrx, begin adding DWARF expression tests	2023-07-20 22:58:15 -04:00
kcbanner	5f72c6508d	debug: rename StackTraceContext to ThreadContext ... 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	424b1299a8	dwarf: add expression writer	2023-07-20 22:58:14 -04:00
kcbanner	ad5f74c0b1	dwarf: introduce ExpressionContext, add more expression opcodes	2023-07-20 22:58:14 -04:00
kcbanner	576ffaa329	darwin: update mcontext_t definition for aarch64 to add neon state	2023-07-20 22:58:14 -04:00
kcbanner	412cd789bf	debug: fixup base address calculations for macho ... 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 ... 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 ... 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 ... 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	6a5e2b713f	debug: de-duplicate some code in macos ModuleDebugInfo	2023-07-20 22:58:14 -04:00
kcbanner	ccc9f82068	c: fixup getcontext ... debug: supports_context -> have_ucontext, supports_getcontext -> have_getcontext test: rework dwarf_unwind test case to also test the non-libc path	2023-07-20 22:58:14 -04:00
kcbanner	7bc1695f15	c: musl doesn't implement getcontext, so defer to our implementation in that case	2023-07-20 22:58:14 -04:00
kcbanner	23d9b59b86	c: add getcontext ... debug: make getContext public	2023-07-20 22:58:14 -04:00
kcbanner	f991b9dc05	debug: fix reading -gdwarf generated debug sections in COFF files ... I had accidentally regressed support for -gdwarf in 461fb499f3 when I changed the logic to use the already-mapped exe/dll image instead of loading it from disk. The string table is mapped as all zeroes by the loader, so if a section header's name is longer than 8 bytes (like the ones generated by -gdwarf), then the name can't be read. Now, if any section headers require the string table, the file is mapped from disk. windows: Add NtCreateSection/NtMapViewOfSection/NtUnmapViewOfSection	2023-07-20 22:58:14 -04:00
kcbanner	caa334712f	linux: rework getcontext to closer match the specification (saved IP/SP match the state after it would return) ... debug: fixup ucontext_t check	2023-07-20 22:58:14 -04:00
kcbanner	89ef004646	debug: x86 unwinding support, more unwinding fixes ... - 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	5cd8ab2473	debug: enhance writeCurrentStackTrace to use context-based unwinding when available	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