afl-untracer raw freebsd support.
MODIFY
examples/afl_untracer/afl-untracer.c
examples/afl_untracer/afl-untracer.c
#include <sys/ucontext.h>
#elif defined(__APPLE__) && defined(__LP64__)
#include <mach-o/dyld_images.h>
+#elif defined(__FreeBSD__)
+#include <sys/sysctl.h>
+#include <sys/user.h>
#else
#error "Unsupproted platform"
#endif
@@ -165,6 +168,67 @@ void read_library_information() {
if (debug) fprintf(stderr, "\n");
+#elif defined(__FreeBSD__)
+ int mib[] = {CTL_KERN, KERN_PROC, KERN_PROC_VMMAP, -1};
+ char *buf, *start, *end;
+ size_t miblen = sizeof(mib) / sizeof(mib[0]);
+ size_t len;
+
+ if (sysctl(mib, miblen, NULL, &len, NULL, 0) == -1) {
+
+ return;
+
+ }
+
+ len = len * 4 / 3;
+
+ buf = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANON, -1, 0);
+ if (buf == MAP_FAILED) {
+
+ return;
+
+ }
+
+ if (sysctl(mib, miblen, buf, &len, NULL, 0) == -1) {
+
+ munmap(buf, len);
+ return;
+
+ }
+
+ start = buf;
+ end = buf + len;
+
+ while (start < end) {
+
+ struct kinfo_vmentry *region = (struct kinfo_vmentry *)start;
+ size_t size = region->kve_structsize;
+
+ if (size == 0) {
+
+ break;
+
+ }
+
+ if ((region->kve_protection & KVME_PROT_READ) &&
+ !(region->kve_protection & KVME_PROT_EXEC)) {
+
+ liblist[liblist_cnt].name = region->kve_path[0] != '\0' ? strdup(region->kve_path) : 0;
+ liblist[liblist_cnt].addr_start = region->kve_start;
+ liblist[liblist_cnt].addr_end = region->kve_end;
+
+ if (debug) {
+ fprintf(stderr, "%s:%x (%lx-%lx)\n", liblist[liblist_cnt].name,
+ liblist[liblist_cnt].addr_end - liblist[liblist_cnt].addr_start,
+ liblist[liblist_cnt].addr_start, liblist[liblist_cnt].addr_end - 1);
+ }
+
+ liblist_cnt++;
+ }
+
+ start += size;
+
+ }
#endif
}
@@ -524,6 +588,9 @@ static void sigtrap_handler(int signum, siginfo_t *si, void *context) {
#elif defined(__linux__)
ctx->uc_mcontext.gregs[REG_RIP] -= 1;
addr = ctx->uc_mcontext.gregs[REG_RIP];
+#elif defined(__FreeBSD__) && defined(__LP64__)
+ ctx->uc_mcontext.mc_rip -= 1;
+ addr = ctx->uc_mcontext.mc_rip;
#else
#error "Unsupported platform"
#endif

afl-untracer raw freebsd support.