maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

[asan] cleanup: remove the SIGILL-related code (rt part) 

llvm-svn: 147665
This commit is contained in:
Kostya Serebryany 2012-01-06 18:02:04 +00:00
parent a78c20d734
commit adebf0caf5
2 changed files with 0 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
compiler-rt/lib/asan/Makefile.old
View File

@ -77,7 +77,6 @@ ARCH=x86_64
ASAN_STACK=1
ASAN_GLOBALS=1
ASAN_USE_CALL=1
ASAN_SCALE=0 # default will be used
ASAN_OFFSET=-1 #default will be used
ASAN_UAR=0
@ -140,7 +139,6 @@ CLANG_ASAN_CXX=$(CLANG_CXX) \
$(BLACKLIST) \
-mllvm -asan-stack=$(ASAN_STACK) \
-mllvm -asan-globals=$(ASAN_GLOBALS) \
-mllvm -asan-use-call=$(ASAN_USE_CALL) \
-mllvm -asan-mapping-scale=$(ASAN_SCALE) \
-mllvm -asan-mapping-offset-log=$(ASAN_OFFSET) \
-mllvm -asan-use-after-return=$(ASAN_UAR) \

21
compiler-rt/lib/asan/asan_rtl.cc
View File

@ -60,7 +60,6 @@ size_t FLAG_malloc_context_size = kMallocContextSize;
uintptr_t FLAG_large_malloc;
bool FLAG_lazy_shadow;
bool FLAG_handle_segv;
bool FLAG_handle_sigill;
bool FLAG_replace_str;
bool FLAG_replace_intrin;
bool FLAG_replace_cfallocator; // Used on Mac only.
@ -335,23 +334,6 @@ static void ASAN_OnSIGSEGV(int, siginfo_t *siginfo, void *context) {
ShowStatsAndAbort();
}
static void ASAN_OnSIGILL(int, siginfo_t *siginfo, void *context) {
// Write the first message using the bullet-proof write.
if (12 != AsanWrite(2, "ASAN:SIGILL\n", 12)) ASAN_DIE;
uintptr_t pc, sp, bp, ax;
GetPcSpBpAx(context, &pc, &sp, &bp, &ax);
uintptr_t addr = ax;
uint8_t *insn = (uint8_t*)pc;
CHECK(insn[0] == 0x0f && insn[1] == 0x0b); // ud2
unsigned access_size_and_type = insn[2] - 0x50;
CHECK(access_size_and_type < 16);
bool is_write = access_size_and_type & 8;
int access_size = 1 << (access_size_and_type & 7);
__asan_report_error(pc, bp, sp, addr, is_write, access_size);
}
// exported functions
#define ASAN_REPORT_ERROR(type, is_write, size) \
extern "C" void __asan_report_ ## type ## size(uintptr_t addr) \
@ -465,7 +447,6 @@ int WRAP(pthread_create)(pthread_t *thread, const pthread_attr_t *attr,
}
static bool MySignal(int signum) {
if (FLAG_handle_sigill && signum == SIGILL) return true;
if (FLAG_handle_segv && signum == SIGSEGV) return true;
#ifdef __APPLE__
if (FLAG_handle_segv && signum == SIGBUS) return true;
@ -692,7 +673,6 @@ void __asan_init() {
FLAG_report_globals = IntFlagValue(options, "report_globals=", 1);
FLAG_lazy_shadow = IntFlagValue(options, "lazy_shadow=", 0);
FLAG_handle_segv = IntFlagValue(options, "handle_segv=", ASAN_NEEDS_SEGV);
FLAG_handle_sigill = IntFlagValue(options, "handle_sigill=", 0);
FLAG_symbolize = IntFlagValue(options, "symbolize=", 1);
FLAG_demangle = IntFlagValue(options, "demangle=", 1);
FLAG_debug = IntFlagValue(options, "debug=", 0);
@ -743,7 +723,6 @@ void __asan_init() {
MaybeInstallSigaction(SIGSEGV, ASAN_OnSIGSEGV);
MaybeInstallSigaction(SIGBUS, ASAN_OnSIGSEGV);
MaybeInstallSigaction(SIGILL, ASAN_OnSIGILL);
if (FLAG_v) {
Printf("|| `[%p, %p]` || HighMem ||\n", kHighMemBeg, kHighMemEnd);