Issue #1471 - Fix building on sparc64 Linux

Correct various pre-processor defines for sparc64 and in mozjemalloc use the JS arm64 allocator on Linux/sparc64.
This corrects build problems opn Linux sparc64 and is in line with bugzilla bug #1275204.

ipc/chromium/src/build/build_config.h

@@ -85,7 +85,7 @@
 #elif defined(__ppc__) || defined(__powerpc__)
 #define ARCH_CPU_PPC 1
 #define ARCH_CPU_32_BITS 1
-#elif defined(__sparc64__)
+#elif defined(__sparc__) && defined(__arch64__)
 #define ARCH_CPU_SPARC 1
 #define ARCH_CPU_64_BITS 1
 #elif defined(__sparc__)

js/src/gc/Memory.cpp

@@ -423,7 +423,7 @@ MapMemoryAt(void* desired, size_t length, int prot = PROT_READ | PROT_WRITE,
 // possibly be correct on AMD64, but for Solaris/illumos it is.	
 
 {
-#if defined(__ia64__) || (defined(__sparc64__) && defined(__NetBSD__)) || defined(__aarch64__) || (defined(__sun) && defined(__x86_64__))
+#if defined(__ia64__) || defined(__aarch64__) || (defined(__sun) && defined(__x86_64__)) || (defined(__sparc__) && defined(__arch64__) && (defined(__NetBSD__) || defined(__linux__)))
     MOZ_ASSERT((0xffff800000000000ULL & (uintptr_t(desired) + length - 1)) == 0);
 #endif
     void* region = mmap(desired, length, prot, flags, fd, offset);
@@ -446,7 +446,7 @@ static inline void*
 MapMemory(size_t length, int prot = PROT_READ | PROT_WRITE,
           int flags = MAP_PRIVATE | MAP_ANON, int fd = -1, off_t offset = 0)
 {
-#if defined(__ia64__) || (defined(__sparc64__) && defined(__NetBSD__))
+#if defined(__ia64__) || (defined(__sparc__) && defined(__arch64__) && defined(__NetBSD__))
     /*
      * The JS engine assumes that all allocated pointers have their high 17 bits clear,
      * which ia64's mmap doesn't support directly. However, we can emulate it by passing
@@ -473,7 +473,7 @@ MapMemory(size_t length, int prot = PROT_READ | PROT_WRITE,
         return nullptr;
     }
     return region;
-#elif defined(__aarch64__) || (defined(__sun) && defined(__x86_64__))
+#elif defined(__aarch64__) || (defined(__sun) && defined(__x86_64__)) || (defined(__sparc__) && defined(__arch64__) && defined(__linux__))
    /*
     * There might be similar virtual address issue on arm64 which depends on
     * hardware and kernel configurations. But the work around is slightly

js/src/jsapi-tests/testGCAllocator.cpp

@@ -302,7 +302,8 @@ void unmapPages(void* p, size_t size) { }
 void*
 mapMemoryAt(void* desired, size_t length)
 {
-#if defined(__ia64__) || (defined(__sparc64__) && defined(__NetBSD__)) || defined(__aarch64__)
+#if defined(__ia64__) || defined(__aarch64__) || \
+    (defined(__sparc__) && defined(__arch64__) && (defined(__NetBSD__) || defined(__linux__)))
     MOZ_RELEASE_ASSERT(0xffff800000000000ULL & (uintptr_t(desired) + length - 1) == 0);
 #endif
     void* region = mmap(desired, length, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
@@ -324,7 +325,7 @@ mapMemory(size_t length)
     int fd = -1;
     off_t offset = 0;
     // The test code must be aligned with the implementation in gc/Memory.cpp.
-#if defined(__ia64__) || (defined(__sparc64__) && defined(__NetBSD__))
+#if defined(__ia64__) || (defined(__sparc__) && defined(__arch64__) && defined(__NetBSD__))
     void* region = mmap((void*)0x0000070000000000, length, prot, flags, fd, offset);
     if (region == MAP_FAILED)
         return nullptr;
@@ -334,7 +335,7 @@ mapMemory(size_t length)
         return nullptr;
     }
     return region;
-#elif defined(__aarch64__)
+#elif defined(__aarch64__) || (defined(__sparc__) && defined(__arch64__) && defined(__linux__))
     const uintptr_t start = UINT64_C(0x0000070000000000);
     const uintptr_t end   = UINT64_C(0x0000800000000000);
     const uintptr_t step  = js::gc::ChunkSize;

media/webrtc/trunk/build/build_config.h

@@ -129,7 +129,7 @@
 #define ARCH_CPU_PPC 1
 #define ARCH_CPU_32_BITS 1
 #define ARCH_CPU_BIG_ENDIAN 1
-#elif defined(__sparc64__)
+#elif defined(__sparc__) && defined(__arch64__)
 #define ARCH_CPU_SPARC_FAMILY 1
 #define ARCH_CPU_SPARC 1
 #define ARCH_CPU_64_BITS 1

media/webrtc/trunk/webrtc/typedefs.h

@@ -61,7 +61,7 @@
 #define WEBRTC_ARCH_BIG_ENDIAN
 #define WEBRTC_BIG_ENDIAN
 #endif
-#elif defined(__sparc64__)
+#elif defined(__sparc__) && defined(__arch64__)
 #define WEBRTC_ARCH_SPARC 1
 #define WEBRTC_ARCH_64_BITS 1
 #define WEBRTC_ARCH_BIG_ENDIAN

memory/mozjemalloc/jemalloc.c

@@ -1971,7 +1971,7 @@ static void *
 pages_map(void *addr, size_t size)
 {
 	void *ret;
-#if defined(__ia64__)
+#if defined(__ia64__) || (defined(__sparc__) && defined(__arch64__) && defined(__linux__))
         /*
          * The JS engine assumes that all allocated pointers have their high 17 bits clear,
          * which ia64's mmap doesn't support directly. However, we can emulate it by passing
@@ -1992,6 +1992,28 @@ pages_map(void *addr, size_t size)
 	}
 #endif
 
+#if defined(__sparc__) && defined(__arch64__) && defined(__linux__)
+    const uintptr_t start = 0x0000070000000000ULL;
+    const uintptr_t end   = 0x0000800000000000ULL;
+
+    /* Copied from js/src/gc/Memory.cpp and adapted for this source */
+
+    uintptr_t hint;
+    void* region = MAP_FAILED;
+    for (hint = start; region == MAP_FAILED && hint + size <= end; hint += chunksize) {
+           region = mmap((void*)hint, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
+           if (region != MAP_FAILED) {
+                   if (((size_t) region + (size - 1)) & 0xffff800000000000) {
+                           if (munmap(region, size)) {
+                                   MOZ_ASSERT(errno == ENOMEM);
+                           }
+                           region = MAP_FAILED;
+                   }
+           }
+    }
+    ret = region;
+#else
+
 	/*
 	 * We don't use MAP_FIXED here, because it can cause the *replacement*
 	 * of existing mappings, and we only want to create new mappings.
@@ -2000,10 +2022,11 @@ pages_map(void *addr, size_t size)
 		MAP_PRIVATE | MAP_ANON, -1, 0);
 	assert(ret != NULL);
 
+#endif
 	if (ret == MAP_FAILED) {
 		ret = NULL;
 	}
-#if defined(__ia64__)
+#if defined(__ia64__) || (defined(__sparc__) && defined(__arch64__) && defined(__linux__))
         /*
          * If the allocated memory doesn't have its upper 17 bits clear, consider it
          * as out of memory.
@@ -2036,7 +2059,7 @@ pages_map(void *addr, size_t size)
 		MozTagAnonymousMemory(ret, size, "jemalloc");
 	}
 
-#if defined(__ia64__)
+#if defined(__ia64__) || (defined(__sparc__) && defined(__arch64__) && defined(__linux__))
 	assert(ret == NULL || (!check_placement && ret != NULL)
 	    || (check_placement && ret == addr));
 #else

toolkit/components/protobuf/src/google/protobuf/stubs/platform_macros.h

@@ -67,7 +67,7 @@
 #define GOOGLE_PROTOBUF_ARCH_32_BIT 1
 #elif defined(sparc)
 #define GOOGLE_PROTOBUF_ARCH_SPARC 1
-#ifdef SOLARIS_64BIT_ENABLED
+#ifdef __arch64__
 #define GOOGLE_PROTOBUF_ARCH_64_BIT 1
 #else
 #define GOOGLE_PROTOBUF_ARCH_32_BIT 1

xpcom/reflect/xptcall/md/unix/moz.build

@@ -177,7 +177,7 @@ if CONFIG['OS_ARCH'] == 'OpenBSD' and CONFIG['OS_TEST'] == 'powerpc':
         'xptcstubs_ppc_openbsd.cpp',
     ]
 
-if CONFIG['OS_ARCH'] == 'Linux' and 'sparc' in CONFIG['OS_TEST']:
+if CONFIG['OS_ARCH'] == 'Linux' and CONFIG['OS_TEST'] == 'sparc':
     SOURCES += [
         'xptcinvoke_asm_sparc_linux_GCC3.s',
         'xptcinvoke_sparc_solaris.cpp',
@@ -205,7 +205,7 @@ if CONFIG['OS_ARCH'] == 'OpenBSD' and CONFIG['OS_TEST'] == 'sparc':
 # files for 64-bit SPARC with no ill effects, so basically the entire mess that
 # was there before is no longer needed.
 
-if CONFIG['OS_ARCH'] in ('OpenBSD', 'FreeBSD', 'SunOS') and CONFIG['OS_TEST'] == 'sparc64':
+if CONFIG['OS_ARCH'] in ('OpenBSD', 'FreeBSD', 'SunOS', 'Linux') and CONFIG['OS_TEST'] == 'sparc64':
     SOURCES += [
         'xptcinvoke_asm_sparc64_openbsd.s',
         'xptcinvoke_sparc64_openbsd.cpp',