147 Commits (9bdc28b0528dad60e01b06c705db5ca78c7da65f)

Author	SHA1	Message	Date
Török Edvin	34306523a1	Fix startup.cbc load (bb #2330). ... BC_STARTUP is already prepared with JIT, so Functions[i] is garbage, don't attempt to codegen it.	15 years ago
Török Edvin	dec93ea86f	Fix bytecode and autoitea06 for Apple-style universal builds (bb #2030) ... Bytecode needs to enable both PPC and X86, link in all targets, and autoit needs fpu_endian == cpu_endian for universal builds.	15 years ago
Török Edvin	1755adf042	Fix build with internal LLVM.	15 years ago
Török Edvin	45ba739216	Fix constructors for LLVM 2.8.	15 years ago
Török Edvin	744c40d142	LLVM 2.8 changed llvm.mem{cpy,move,set}.* to take 5 arguments. ... Use AutoUpgrade to upgrade these calls. Intrinsic::getDeclaration can't be used because in 2.7 it needs 1 type, in 2.8 it needs 2/3, and there is no function to query how many it needs.	15 years ago
Török Edvin	e3a5450335	LLVM 2.8 API update. ... Some APIs got renamed, provide macro wrappers.	15 years ago
Török Edvin	1300b00244	Don't cast the iterator directly. ... LLVM 2.8 doesn't allow this, first dereference, then cast. This is compatible with 2.7.	15 years ago
Török Edvin	c0a306b291	Fix valgrind warning introduced in clamav-0.96.3-6-g6e52ce6. ... It reports some possible lost memory in llvm::sys::Timer, since by default timer is not used add a wrapper so it only constructs Timer as necessary.	15 years ago
Török Edvin	6e52ce67c7	Improve bytecode load time and optimization (bb #2278). ... Avoid quadratic load times: run module passes at the end, and run rtcheck inserter at the end also. Also optimize away some simple situations that the compiler couldn't, like result of __is_bigendian() which is a constant at load time (but not at compile time). If we would have run LLVM's -O1 optimizers these would have been optimized already, but we don't do that for 2 reasons: - optimizations may introduce new bugs - may take a bit longer time Just run some simple transforms, and some custom optimizations for the bigendian case.	15 years ago
Török Edvin	3eef86ee9f	Workaround crash due to gcc stack alignment requirements (bb #2270). ... GCC (4.4 at least) requires and creates functions with 16-byte stack alignment on 32-bit Linux too. If they happen to use SSE instructions they will crash if incoming stack alignment is not 16-byte. LLVM claims that 4-byte stack alignment is the standard, and it only aligns to 4-byte, hence the crash. Apparently older versions of GCC/glibc would crash if it set alignment to 16-byte. But since the oldest GCC we support is 4.1.2, and disable LLVM on anything older just set stack alignment to 16-byte for all functions. LLVM will realign stack as needed. To be safe turn this on only on Linux. This should really be fixed by either GCC or LLVM, but until that happens (see LLVM PR8152) lets use this workaround.	15 years ago
Török Edvin	cb1260cc8e	Fix __bzero on darwin 10. ... LLVM calls __bzero directly which is not allowed by libclamav. Provide wrapper.	15 years ago
Török Edvin	71ca3536c4	Fix hung clamd on FreeBSD (bb #2235). ... bytecode selfcheck running under JIT ran too early, and spawned a thread. Then clamd forked. threads + fork = bad idea. So prevent the thread from being spawned in selfcheck mode. So at the time of fork clamd will still be single threaded as in 0.96.1.	16 years ago
Török Edvin	f1d071c8ed	Avoid false 'Verification error' messages (bb #2239). ... The fix for bb #1924 already fixed most of these, by using the stackprotectreq attribute to determine if a function was already verified, not to verify it twice. However very simple bytecodes don't get that attribute applied. Fix this by always applying the stackprotect attribute, and checking for that attribute instead of stackprotectreq.	16 years ago
Török Edvin	c85060ff79	Move environment detection code to bytecode_detect.c. ... This is in preparation for bug #2078, so that the bytecodes can turn themselves off based on more than just the arch itself.	16 years ago
Török Edvin	8977ed61fe	Update paxctl message to 'paxctl -cm' (bb #2092).	16 years ago
Török Edvin	a5a19f4518	bytecode: PaX and selfcheck. ... Detect PaX and fallback to intepreter if needed (bb #2092). Recent PaX versions deny the RWX mapping, but older versions silently change it to RW, which causes the program to die as soon as it tries to execute JITed code. Add selfcheck on startup (bb #2092). This will run a very simple bytecode on startup in both JIT and interpreter mode. The bytecode only calls 1 libclamav API and returns.	16 years ago
Török Edvin	fa0a9143bb	Fix types for store/copy instructions.	16 years ago
Török Edvin	daad92ace3	Relax bounds checks. It was rejecting correct code. ... Bounds checks were too strict, causing the bytecode to abort when it shouldn't. This happened when trying to access the last byte of an array, the verifier was too conservative and considered to be out of bounds, when in fact it wasn't. This is an update of the runtime verifier from the bytecode compiler.	16 years ago
Török Edvin	7a7365efe9	0.96.1 new APIs (cli_map etc.)	16 years ago
Török Edvin	b0a5ddb3a5	Fix memcmp and memmove. ... Due to a bug src and dest were always the same, so they were never working in JIT mode.	16 years ago
Török Edvin	2a7f1cdaf5	Print C++ compiler version. ... This requires exporting a function from libclamav, since clamconf is not C++...	16 years ago
Török Edvin	e4a0f2c94f	fix compiler warnings (bb #1872, bb #1934, bb #1935)	16 years ago
Török Edvin	f121d43df8	Workaround LLVM JIT PowerPC relocation bug (bb #1921). ... Based on Gary Benson's workaround for OpenJDK Shark / IcedTea.	16 years ago
Török Edvin	556eaf0442	Update ClamBCRTChecks.cpp from bytecode compiler: ... Check bounds of each pointer passed to/from APIcalls, forbid recursion.	16 years ago
Török Edvin	b2de4fd85f	Minor optimization in JIT loader.	16 years ago
Török Edvin	cbec3f2446	Update SELinux message.	16 years ago
Török Edvin	44e134312c	More fixes for pdf.cbc.	16 years ago
Török Edvin	c506c2c555	Fallback to interpreter mode when SELinux denies 'execmem' access. (bb #1901). ... This also fixes a crash when run under SELinux: MemoryBlock() needs to initialize its field to 0!	16 years ago
Török Edvin	11cee1b7de	Disable JITDebugRegisterer, and fix unit_tests rule.	16 years ago
Török Edvin	6ea339aeab	Fix bswap.	16 years ago
Török Edvin	bdd9aeaeeb	Use a watchdog thread. Also make timeout be ms instead of us.	16 years ago
Török Edvin	99536a178c	Insert timeout checks directly into the JITed code. ... pthread_cancel is broken on Mac OS X (it only works if the thread you want to kill calls pthread_testcancel, which is never the situation when you need async cancelation). Anyway async cancelation is risky, it may leave bc_ctx in an inconsistent state. So rather than doing using pthread_cancel (or pthread_kill+siglongjmp) just insert the timeout checks into the JITed code directly. These are inserted in each loop, if the loop's tripcount is unknown, or higher than a threshold. They are also inserted after a certain amount of APIcalls are made (even in absence of loops). Note that 'loop' in this sense is not LLVM's notion of a natural loop, it is simply a BB which is reachable both directly and via a backedge. For example this doesn't contain natural loops but contains backedges (and a potential infinite loop): int foo(int a) { int x=4; if (a == 42) goto head2; head: x++; head2: if (a >= 2) { x += 3; goto head; } else if (a >= 0) { x += 9; goto head; } return x; }	16 years ago
Török Edvin	b63681a52b	Introduce BytecodeTimeout.	16 years ago
Török Edvin	884a0b8f8d	Support for timeouts.	16 years ago
Török Edvin	84edf09bba	Fix clambc -p.	16 years ago
Török Edvin	e2752b2cc8	Fix valgrind warning.	16 years ago
Török Edvin	52d0d8bc7e	More fixes for global vars in the interpreter.	16 years ago
Török Edvin	09667cdd3b	Print size and location of JITed code.	16 years ago
Török Edvin	6ad39a4099	zlib/buffer apis.	16 years ago
Török Edvin	75e18b29c2	minimalistic zlib api.	16 years ago
Török Edvin	b56bea54d3	New API for buffer fill.	16 years ago
Török Edvin	aa745db74d	Add clamscan commandline to load bytecode in debug mode.	16 years ago
Török Edvin	f60c59a471	bb #1800.	16 years ago
Török Edvin	04d11afedb	Update to new LLVM API. ... ModuleProvider is gone!	16 years ago
Török Edvin	6eeadbfeda	dconf for bytecode.	16 years ago
Török Edvin	1e30496d2a	runtime checks verifier.	16 years ago
Török Edvin	236fb13647	New pointer handling rules.	16 years ago
Török Edvin	847d7fc1b8	2009->2010	16 years ago
Török Edvin	57bbb2eb14	Fix loading of multiple .cbc files. ... Common function prototypes must be added only once per Module, otherwise LLVM autorenames them, and we get llvm.bswap.i326 instead of llvm.bswap.i32, which is of course not valid and the verifier rejects.	16 years ago
Török Edvin	bcb354a654	_GLIBCXX_PARALLEL is not supported: it creates threads before we fork() causing ... deadlock.	16 years ago