# DP: Re-apply sanitizer patch for sparc, dropped upstream

# don't remove, this is regularly overwritten, see PR sanitizer/63958.

libsanitizer/

2014-10-14  David S. Miller  <davem@davemloft.net>

	* sanitizer_common/sanitizer_platform_limits_linux.cc (time_t):
	Define at __kernel_time_t, as needed for sparc.
	(struct __old_kernel_stat): Don't check if __sparc__ is defined.
	* libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h
	(__sanitizer): Define struct___old_kernel_stat_sz,
	struct_kernel_stat_sz, and struct_kernel_stat64_sz for sparc.
	(__sanitizer_ipc_perm): Adjust for sparc targets.
	(__sanitizer_shmid_ds): Likewsie.
	(__sanitizer_sigaction): Likewsie.
	(IOC_SIZE): Likewsie.

Index: libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h
===================================================================
--- a/src/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h	(revision 216223)
+++ a/src/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h	(revision 216224)
@@ -72,6 +72,14 @@
   const unsigned struct_kernel_stat_sz = 144;
   #endif
   const unsigned struct_kernel_stat64_sz = 104;
+#elif defined(__sparc__) && defined(__arch64__)
+  const unsigned struct___old_kernel_stat_sz = 0;
+  const unsigned struct_kernel_stat_sz = 104;
+  const unsigned struct_kernel_stat64_sz = 144;
+#elif defined(__sparc__) && !defined(__arch64__)
+  const unsigned struct___old_kernel_stat_sz = 0;
+  const unsigned struct_kernel_stat_sz = 64;
+  const unsigned struct_kernel_stat64_sz = 104;
 #endif
   struct __sanitizer_perf_event_attr {
     unsigned type;
@@ -94,7 +102,7 @@
 
 #if defined(__powerpc64__)
   const unsigned struct___old_kernel_stat_sz = 0;
-#else
+#elif !defined(__sparc__)
   const unsigned struct___old_kernel_stat_sz = 32;
 #endif
 
@@ -173,6 +181,18 @@
     unsigned short __pad1;
     unsigned long __unused1;
     unsigned long __unused2;
+#elif defined(__sparc__)
+# if defined(__arch64__)
+    unsigned mode;
+    unsigned short __pad1;
+# else
+    unsigned short __pad1;
+    unsigned short mode;
+    unsigned short __pad2;
+# endif
+    unsigned short __seq;
+    unsigned long long __unused1;
+    unsigned long long __unused2;
 #else
     unsigned short mode;
     unsigned short __pad1;
@@ -190,6 +210,26 @@
 
   struct __sanitizer_shmid_ds {
     __sanitizer_ipc_perm shm_perm;
+  #if defined(__sparc__)
+  # if !defined(__arch64__)
+    u32 __pad1;
+  # endif
+    long shm_atime;
+  # if !defined(__arch64__)
+    u32 __pad2;
+  # endif
+    long shm_dtime;
+  # if !defined(__arch64__)
+    u32 __pad3;
+  # endif
+    long shm_ctime;
+    uptr shm_segsz;
+    int shm_cpid;
+    int shm_lpid;
+    unsigned long shm_nattch;
+    unsigned long __glibc_reserved1;
+    unsigned long __glibc_reserved2;
+  #else    
   #ifndef __powerpc__
     uptr shm_segsz;
   #elif !defined(__powerpc64__)
@@ -227,6 +267,7 @@
     uptr __unused4;
     uptr __unused5;
   #endif
+#endif
   };
 #elif SANITIZER_FREEBSD
   struct __sanitizer_ipc_perm {
@@ -523,9 +564,13 @@
 #else
     __sanitizer_sigset_t sa_mask;
 #ifndef __mips__
+#if defined(__sparc__)
+    unsigned long sa_flags;
+#else
     int sa_flags;
 #endif
 #endif
+#endif
 #if SANITIZER_LINUX
     void (*sa_restorer)();
 #endif
@@ -745,7 +790,7 @@
 
 #define IOC_NRBITS 8
 #define IOC_TYPEBITS 8
-#if defined(__powerpc__) || defined(__powerpc64__) || defined(__mips__)
+#if defined(__powerpc__) || defined(__powerpc64__) || defined(__mips__) || defined(__sparc__)
 #define IOC_SIZEBITS 13
 #define IOC_DIRBITS 3
 #define IOC_NONE 1U
@@ -775,7 +820,17 @@
 #define IOC_DIR(nr) (((nr) >> IOC_DIRSHIFT) & IOC_DIRMASK)
 #define IOC_TYPE(nr) (((nr) >> IOC_TYPESHIFT) & IOC_TYPEMASK)
 #define IOC_NR(nr) (((nr) >> IOC_NRSHIFT) & IOC_NRMASK)
+
+#if defined(__sparc__)
+// In sparc the 14 bits SIZE field overlaps with the
+// least significant bit of DIR, so either IOC_READ or
+// IOC_WRITE shall be 1 in order to get a non-zero SIZE.
+# define IOC_SIZE(nr)                       \
+  ((((((nr) >> 29) & 0x7) & (4U|2U)) == 0)? \
+   0 : (((nr) >> 16) & 0x3fff))
+#else
 #define IOC_SIZE(nr) (((nr) >> IOC_SIZESHIFT) & IOC_SIZEMASK)
+#endif
 
   extern unsigned struct_arpreq_sz;
   extern unsigned struct_ifreq_sz;
Index: libsanitizer/sanitizer_common/sanitizer_platform_limits_linux.cc
===================================================================
--- a/src/libsanitizer/sanitizer_common/sanitizer_platform_limits_linux.cc	(revision 216223)
+++ a/src/libsanitizer/sanitizer_common/sanitizer_platform_limits_linux.cc	(revision 216224)
@@ -36,6 +36,7 @@
 #define uid_t __kernel_uid_t
 #define gid_t __kernel_gid_t
 #define off_t __kernel_off_t
+#define time_t __kernel_time_t
 // This header seems to contain the definitions of _kernel_ stat* structs.
 #include <asm/stat.h>
 #undef ino_t
@@ -60,7 +61,7 @@
 }  // namespace __sanitizer
 
 #if !defined(__powerpc64__) && !defined(__x86_64__) && !defined(__aarch64__)\
-                            && !defined(__mips__)
+                            && !defined(__mips__) && !defined(__sparc__)
 COMPILER_CHECK(struct___old_kernel_stat_sz == sizeof(struct __old_kernel_stat));
 #endif