[llvm-commits] [compiler-rt] r168301 - /compiler-rt/trunk/lib/sanitizer_common/sanitizer_linux.cc

[Kostya Serebryany]

Author: kcc
Date: Mon Nov 19 01:53:36 2012
New Revision: 168301

URL: http://llvm.org/viewvc/llvm-project?rev=168301&view=rev
Log:
[asan] support PowerPC and SPARC in sanitizer_linux.cc

Modified:
    compiler-rt/trunk/lib/sanitizer_common/sanitizer_linux.cc

Modified: compiler-rt/trunk/lib/sanitizer_common/sanitizer_linux.cc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/sanitizer_common/sanitizer_linux.cc?rev=168301&r1=168300&r2=168301&view=diff
==============================================================================
--- compiler-rt/trunk/lib/sanitizer_common/sanitizer_linux.cc (original)
+++ compiler-rt/trunk/lib/sanitizer_common/sanitizer_linux.cc Mon Nov 19 01:53:36 2012
@@ -31,12 +31,22 @@
 #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);
@@ -69,7 +79,7 @@
 }
 
 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;
@@ -95,7 +105,7 @@
 
 // ----------------- 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;