#include <unistd.h>
#include <errno.h>
+// Are we using 32-bit or 64-bit syscalls?
+// We need to list the 64-bit architecures explicitly because for x32
+// (which defines __x86_64__) we have __WORDSIZE == 32,
+// but we still need to use 64-bit syscalls.
+#if defined(__x86_64__) || defined(__powerpc64__) || defined(__sparc64__)
+# define SANITIZER_LINUX_USES_64BIT_SYSCALLS 1
+#else
+# define SANITIZER_LINUX_USES_64BIT_SYSCALLS 0
+#endif
+
namespace __sanitizer {
// --------------- sanitizer_libc.h
void *internal_mmap(void *addr, uptr length, int prot, int flags,
int fd, u64 offset) {
-#if defined __x86_64__
+#if SANITIZER_LINUX_USES_64BIT_SYSCALLS
return (void *)syscall(__NR_mmap, addr, length, prot, flags, fd, offset);
#else
return (void *)syscall(__NR_mmap2, addr, length, prot, flags, fd, offset);
}
uptr internal_filesize(fd_t fd) {
-#if defined __x86_64__
+#if SANITIZER_LINUX_USES_64BIT_SYSCALLS
struct stat st;
if (syscall(__NR_fstat, fd, &st))
return -1;
// ----------------- sanitizer_common.h
bool FileExists(const char *filename) {
-#if defined __x86_64__
+#if SANITIZER_LINUX_USES_64BIT_SYSCALLS
struct stat st;
if (syscall(__NR_stat, filename, &st))
return false;