ExternalVendorCode/AFLplusplus
1
0
Fork 0
mirror of https://github.com/AFLplusplus/AFLplusplus.git synced 2025-06-18 20:48:07 +00:00
Code Issues Packages Projects Releases Wiki Activity

split up __afl_manual_init, added internal AFL_DISABLE_LLVM_INSTRUMENTATION, skipping ctor+ifunc functions for all llvm, code-format

Browse Source
This commit is contained in:
van Hauser
2020-08-12 16:06:30 +02:00
parent b38837f4ff
commit 7a6867e2f8
13 changed files with 317 additions and 317 deletions
Download Patch File Download Diff File Expand all files Collapse all files

38
llvm_mode/afl-llvm-rt.o.c
View File

@ -35,6 +35,8 @@
#include <string.h>
#include <assert.h>
#include <stdint.h>
#include <stddef.h>
#include <limits.h>
#include <errno.h>
#include <sys/mman.h>
@ -842,9 +844,22 @@ void __afl_manual_init(void) {
static u8 init_done;
if (getenv("AFL_DISABLE_LLVM_INSTRUMENTATION")) {
init_done = 1;
is_persistent = 0;
__afl_sharedmem_fuzzing = 0;
if (__afl_area_ptr == NULL) __afl_area_ptr = __afl_area_initial;
if (getenv("AFL_DEBUG"))
fprintf(stderr,
"DEBUG: disabled instrumenation because of "
"AFL_DISABLE_LLVM_INSTRUMENTATION\n");
}
if (!init_done) {
__afl_map_shm();
__afl_start_forkserver();
init_done = 1;
@ -852,11 +867,11 @@ void __afl_manual_init(void) {
}
/* Proper initialization routine. */
/* Initialization of the forkserver - latest possible */
__attribute__((constructor(CONST_PRIO))) void __afl_auto_init(void) {
__attribute__((constructor())) void __afl_auto_init(void) {
is_persistent = !!getenv(PERSIST_ENV_VAR);
if (getenv("AFL_DISABLE_LLVM_INSTRUMENTATION")) return;
if (getenv(DEFER_ENV_VAR)) return;
@ -864,6 +879,18 @@ __attribute__((constructor(CONST_PRIO))) void __afl_auto_init(void) {
}
/* Initialization of the shmem - earliest possible because of LTO fixed mem. */
__attribute__((constructor(0))) void __afl_auto_early(void) {
if (getenv("AFL_DISABLE_LLVM_INSTRUMENTATION")) return;
is_persistent = !!getenv(PERSIST_ENV_VAR);
__afl_map_shm();
}
/* The following stuff deals with supporting -fsanitize-coverage=trace-pc-guard.
It remains non-operational in the traditional, plugin-backed LLVM mode.
For more info about 'trace-pc-guard', see llvm_mode/README.md.
@ -912,7 +939,8 @@ void __sanitizer_cov_trace_pc_guard(uint32_t *guard) {
#else
__afl_area_ptr[*guard] = __afl_area_ptr[*guard] + 1 + (__afl_area_ptr[*guard] == 255 ? 1 : 0);
__afl_area_ptr[*guard] =
__afl_area_ptr[*guard] + 1 + (__afl_area_ptr[*guard] == 255 ? 1 : 0);
#endif