This change removes support for earlier LLVM versions; making them
work as well is simply too tedious.
Change-Id: I372a151279ceb2bfd6de101c9e0c15f0a4b18c03
- search for libdwarf.h in new locations (e.g., /usr/include/libdwarf/)
- build Bochs with -std=gnu++98 (gnu++14 is default since GCC 6.1)
- specify "proto2" syntax for protobuf messages
- minor build-system and C++ namespace fixes
Change-Id: I16dbc622c797ef8e936fe3c0fb9b03029d27529d
This change makes the RegisterImporter continue importing if it
encounters an instruction pointer that is not part of the disassembled
ELF binary (and, thus, cannot be disassembled). This is OK if we
don't want to inject into registers used by these instructions.
Change-Id: Ia9b5e7f789367f8386d63f235451dae5d399610d
This change limits fault injection to general-purpose registers, instead of
relying on the LLVM/Fail* bridge to only recognize the status register
(EFLAGS on x86) and general-purpose registers. Since this bridge just
learned to translate x86's control and segment registers, and these
registers need special handling for fault injection (def/use pruning does
not work here), only import register accesses from the RT_GP subset.
Status register and instruction pointer injection remain functional, and
import-trace now should work architecture independently.
Change-Id: Id8ad2f0a9dab1861bf16ea9443c3bdfe7213d3fa
The RegisterImporter splits each register into 1 byte chunks. The
--do-not-split flag prohibits this splitting. Be aware, that def/use
pruning won't work correctly in mixed-width cases (EAX/AX/AH/AL).
Change-Id: Ifa1930bdd9f317a6fd3ae50c4ff3cffc97504640
This change touches several subsystems, tools and experiments
(sal, util, cmake, import-trace, generic-tracing, nanojpeg), and
changes details not worth separate commits.
Change-Id: Icd1d664d1be5cfc2212dbf77801c271183214d08
This tool can now import extended trace information with the
--extended-trace command-line parameter. The existing importers cease
using artificial access_info_t objects in favor of passing through the
original Trace_Event wherever possible. This allows us to import
extended trace information for all importers.
Change-Id: I3613e9d05d5e69ad49e96f4dc5ba0b1c4ef95a11
It's OK if we cannot map every register LLVM knows to a Fail register
ID, but we need to explicitly skip these cases in the
RegisterImporter.
Change-Id: I2152f819fb94aa4de5720c5798b229b66988d382
Contemporary AspectC++ versions can deal with the LLVM headers very
well, and #ifdef __puma stuff in Fail* headers results in
unmaintainable #ifdef __puma blocks in other parts of Fail* (e.g., the
trace importer).
Make sure you're using a 64-bit ac++ when living in a 64-bit userland
(the 32-bit version doesn't know about __int128), and be aware that
AspectC++ r325 introduced a regression that has not been fixed yet.
Change-Id: I5bb759b08995a74b020d44a2b40e9d7a6e18111c
For def/use pruning, the linear address mapping of the x86
sub-registers (e.g., AX represents the lower 16 bits of EAX) must
overlap. If it doesn't, e.g., AX and EAX are considered separate
registers by def/use pruning, resulting in a failure to correlate an
EAX def with a subsequent AX use.
The only user of this mapping up to now, RegisterImporter, forced all
register widths to 8 bits, thereby fortunately canceling out this
problem. Nevertheless it makes no sense to continue encoding a
constant width in these virtual addresses.
Existing trace, fspgroup, fsppilot and result tables may be converted
to the new encoding by using this query:
UPDATE <tablename> SET data_address = ((data_address >> 4) & ~0xf) | data_address & 0xf;
Change-Id: I7a942b78c34f6140803a86af639eeedef3550f34
This was necessary because LLVM 3.1's
ELFObjectFile<ELFT>::sectionContainsSymbolsectionContainsSymbol() (needed
for proper functioning of our LLVM disassembler, unless you're using
-ffunction-sections) is "unimplemented".
Change-Id: I81112627ebd1c92b718ac6f4ed58d7f188aedf0c
The RegisterImporter disassembles the binary and adds a trace event
for each byte read or written from register. The register number (Fail
Register Numbers are used) and the offset within the register are
encoded within the trace event.
Change-Id: I2d2fd720841fedeeff5f28b64f24ec5f6d2ea0c3
