mirror of
https://github.com/AFLplusplus/AFLplusplus.git
synced 2025-06-08 16:21:32 +00:00
44 lines
1.3 KiB
Diff
44 lines
1.3 KiB
Diff
diff --git a/bsd-user/elfload.c b/bsd-user/elfload.c
|
|
index 7cccf3eb..195875af 100644
|
|
--- a/bsd-user/elfload.c
|
|
+++ b/bsd-user/elfload.c
|
|
@@ -15,6 +15,8 @@
|
|
#undef ELF_ARCH
|
|
#endif
|
|
|
|
+extern abi_ulong afl_entry_point, afl_start_code, afl_end_code;
|
|
+
|
|
/* from personality.h */
|
|
|
|
/*
|
|
@@ -1522,6 +1524,8 @@ int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
|
|
info->start_data = start_data;
|
|
info->end_data = end_data;
|
|
info->start_stack = bprm->p;
|
|
+ if (!afl_start_code) afl_start_code = vaddr;
|
|
+ if (!afl_end_code) afl_end_code = vaddr_ef;
|
|
|
|
/* Calling set_brk effectively mmaps the pages that we need for the bss and break
|
|
sections */
|
|
@@ -1549,6 +1553,20 @@ int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
|
|
}
|
|
|
|
info->entry = elf_entry;
|
|
+ if (!afl_entry_point) {
|
|
+ char *ptr;
|
|
+ if ((ptr = getenv("AFL_ENTRYPOINT")) != NULL) {
|
|
+ afl_entry_point = strtoul(ptr, NULL, 16);
|
|
+ } else {
|
|
+ afl_entry_point = info->entry;
|
|
+ }
|
|
+#ifdef TARGET_ARM
|
|
+ /* The least significant bit indicates Thumb mode. */
|
|
+ afl_entry_point = afl_entry_point & ~(target_ulong)1;
|
|
+#endif
|
|
+ }
|
|
+ if (getenv("AFL_DEBUG") != NULL)
|
|
+ fprintf(stderr, "AFL forkserver entrypoint: %p\n", (void*)afl_entry_point);
|
|
|
|
return 0;
|
|
}
|