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newAlignedPinnedByteArray#: avoid allocating an extra word sometimes
[ghc-hetmet.git] / rts / Linker.c
diff --git a/rts/Linker.c b/rts/Linker.c
index 718936a..63d89e0 100644 (file)
--- a/rts/Linker.c
+++ b/rts/Linker.c
@@ -107,6 +107,10 @@
 #endif
 #endif
 
+#if defined(x86_64_HOST_ARCH) && defined(darwin_HOST_OS)
+#define ALWAYS_PIC
+#endif
+
 /* Hash table mapping symbol names to Symbol */
 static /*Str*/HashTable *symhash;
 
@@ -208,7 +212,7 @@ static void machoInitSymbolsWithoutUnderscore( void );
  * We pick a default address based on the OS, but also make this
  * configurable via an RTS flag (+RTS -xm)
  */
-#if defined(x86_64_HOST_ARCH)
+#if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
 
 #if defined(MAP_32BIT)
 // Try to use MAP_32BIT
@@ -457,7 +461,7 @@ typedef struct _RtsSymbolVal {
       SymI_NeedsProto(closedir)
 #endif
 
-#if defined(darwin_TARGET_OS) && HAVE_PRINTF_LDBLSTUB
+#if defined(darwin_HOST_OS) && HAVE_PRINTF_LDBLSTUB
 #define RTS_DARWIN_ONLY_SYMBOLS                                    \
      SymI_NeedsProto(asprintf$LDBLStub)                     \
      SymI_NeedsProto(err$LDBLStub)                          \
@@ -515,9 +519,9 @@ typedef struct _RtsSymbolVal {
 
 #if !defined(mingw32_HOST_OS)
 #define RTS_USER_SIGNALS_SYMBOLS \
-   SymI_HasProto(setIOManagerPipe) \
+   SymI_HasProto(setIOManagerControlFd) \
+   SymI_HasProto(setIOManagerWakeupFd) \
    SymI_HasProto(ioManagerWakeup) \
-   SymI_HasProto(ioManagerSync) \
    SymI_HasProto(blockUserSignals) \
    SymI_HasProto(unblockUserSignals)
 #else
@@ -766,11 +770,12 @@ typedef struct _RtsSymbolVal {
       SymI_HasProto(forkOS_createThread)               \
       SymI_HasProto(freeHaskellFunctionPtr)            \
       SymI_HasProto(getOrSetTypeableStore)             \
-      SymI_HasProto(getOrSetGHCConcSignalHandlerStore)         \
-      SymI_HasProto(getOrSetGHCConcPendingEventsStore)         \
-      SymI_HasProto(getOrSetGHCConcPendingDelaysStore)         \
-      SymI_HasProto(getOrSetGHCConcIOManagerThreadStore)       \
-      SymI_HasProto(getOrSetGHCConcProddingStore)              \
+      SymI_HasProto(getOrSetGHCConcSignalSignalHandlerStore)           \
+      SymI_HasProto(getOrSetGHCConcWindowsPendingDelaysStore)          \
+      SymI_HasProto(getOrSetGHCConcWindowsIOManagerThreadStore)        \
+      SymI_HasProto(getOrSetGHCConcWindowsProddingStore)               \
+      SymI_HasProto(getOrSetSystemEventThreadEventManagerStore)                \
+      SymI_HasProto(getOrSetSystemEventThreadIOManagerThreadStore)             \
       SymI_HasProto(genSymZh)                          \
       SymI_HasProto(genericRaise)                      \
       SymI_HasProto(getProgArgv)                       \
@@ -789,6 +794,7 @@ typedef struct _RtsSymbolVal {
       SymI_HasProto(stg_unpackClosurezh)                \
       SymI_HasProto(stg_getApStackValzh)                \
       SymI_HasProto(stg_getSparkzh)                     \
+      SymI_HasProto(stg_numSparkszh)                    \
       SymI_HasProto(stg_isCurrentThreadBoundzh)                \
       SymI_HasProto(stg_isEmptyMVarzh)                 \
       SymI_HasProto(stg_killThreadzh)                  \
@@ -871,6 +877,7 @@ typedef struct _RtsSymbolVal {
       SymI_HasProto(rts_unlock)                                \
       SymI_HasProto(rts_unsafeGetMyCapability)          \
       SymI_HasProto(rtsSupportsBoundThreads)           \
+      SymI_HasProto(rts_isProfiled)                    \
       SymI_HasProto(setProgArgv)                       \
       SymI_HasProto(startupHaskell)                    \
       SymI_HasProto(shutdownHaskell)                   \
@@ -1004,7 +1011,7 @@ typedef struct _RtsSymbolVal {
 
 /* entirely bogus claims about types of these symbols */
 #define SymI_NeedsProto(vvv)  extern void vvv(void);
-#if defined(__PIC__) && defined(mingw32_TARGET_OS)
+#if defined(__PIC__) && defined(mingw32_HOST_OS)
 #define SymE_HasProto(vvv)    SymE_HasProto(vvv);
 #define SymE_NeedsProto(vvv)    extern void _imp__ ## vvv (void);
 #else
@@ -1163,7 +1170,7 @@ initLinker( void )
     ASSERT( compileResult == 0 );
 #   endif
 
-#if defined(x86_64_HOST_ARCH)
+#if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
     if (RtsFlags.MiscFlags.linkerMemBase != 0) {
         // User-override for mmap_32bit_base
         mmap_32bit_base = (void*)RtsFlags.MiscFlags.linkerMemBase;
@@ -1532,7 +1539,7 @@ mmapForLinker (size_t bytes, nat flags, int fd)
    pagesize = getpagesize();
    size = ROUND_UP(bytes, pagesize);
 
-#if defined(x86_64_HOST_ARCH)
+#if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
 mmap_again:
 
    if (mmap_32bit_base != 0) {
@@ -1549,7 +1556,7 @@ mmap_again:
        stg_exit(EXIT_FAILURE);
    }
    
-#if defined(x86_64_HOST_ARCH)
+#if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
    if (mmap_32bit_base != 0) {
        if (result == map_addr) {
            mmap_32bit_base = (StgWord8*)map_addr + size;
@@ -1607,6 +1614,7 @@ loadObj( char *path )
 #else
    FILE *f;
 #endif
+   IF_DEBUG(linker, debugBelch("loadObj %s\n", path));
    initLinker();
 
    /* debugBelch("loadObj %s\n", path ); */
@@ -1647,7 +1655,10 @@ loadObj( char *path )
 #  endif
 
    r = stat(path, &st);
-   if (r == -1) { return 0; }
+   if (r == -1) {
+       IF_DEBUG(linker, debugBelch("File doesn't exist\n"));
+       return 0;
+   }
 
    /* sigh, strdup() isn't a POSIX function, so do it the long way */
    oc->fileName = stgMallocBytes( strlen(path)+1, "loadObj" );
@@ -1716,10 +1727,16 @@ loadObj( char *path )
 
 #  if defined(OBJFORMAT_MACHO) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH))
    r = ocAllocateSymbolExtras_MachO ( oc );
-   if (!r) { return r; }
+   if (!r) {
+       IF_DEBUG(linker, debugBelch("ocAllocateSymbolExtras_MachO failed\n"));
+       return r;
+   }
 #  elif defined(OBJFORMAT_ELF) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH))
    r = ocAllocateSymbolExtras_ELF ( oc );
-   if (!r) { return r; }
+   if (!r) {
+       IF_DEBUG(linker, debugBelch("ocAllocateSymbolExtras_ELF failed\n"));
+       return r;
+   }
 #endif
 
    /* verify the in-memory image */
@@ -1732,7 +1749,10 @@ loadObj( char *path )
 #  else
    barf("loadObj: no verify method");
 #  endif
-   if (!r) { return r; }
+   if (!r) {
+       IF_DEBUG(linker, debugBelch("ocVerifyImage_* failed\n"));
+       return r;
+   }
 
    /* build the symbol list for this image */
 #  if defined(OBJFORMAT_ELF)
@@ -1744,7 +1764,10 @@ loadObj( char *path )
 #  else
    barf("loadObj: no getNames method");
 #  endif
-   if (!r) { return r; }
+   if (!r) {
+       IF_DEBUG(linker, debugBelch("ocGetNames_* failed\n"));
+       return r;
+   }
 
    /* loaded, but not resolved yet */
    oc->status = OBJECT_LOADED;
@@ -2017,7 +2040,7 @@ static SymbolExtra* makeSymbolExtra( ObjectCode* oc,
  * PowerPC specifics (instruction cache flushing)
  * ------------------------------------------------------------------------*/
 
-#ifdef powerpc_TARGET_ARCH
+#ifdef powerpc_HOST_ARCH
 /*
    ocFlushInstructionCache
 
@@ -3760,6 +3783,9 @@ do_Elf_Rela_relocations ( ObjectCode* oc, char* ehdrC,
 
       case R_X86_64_PC32:
       {
+#if defined(ALWAYS_PIC)
+          barf("R_X86_64_PC32 relocation, but ALWAYS_PIC.");
+#else
          StgInt64 off = value - P;
          if (off >= 0x7fffffffL || off < -0x80000000L) {
 #if X86_64_ELF_NONPIC_HACK
@@ -3772,6 +3798,7 @@ do_Elf_Rela_relocations ( ObjectCode* oc, char* ehdrC,
 #endif
           }
          *(Elf64_Word *)P = (Elf64_Word)off;
+#endif
          break;
       }
 
@@ -3783,6 +3810,9 @@ do_Elf_Rela_relocations ( ObjectCode* oc, char* ehdrC,
       }
 
       case R_X86_64_32:
+#if defined(ALWAYS_PIC)
+          barf("R_X86_64_32 relocation, but ALWAYS_PIC.");
+#else
          if (value >= 0x7fffffffL) {
 #if X86_64_ELF_NONPIC_HACK           
               StgInt64 pltAddress = (StgInt64) &makeSymbolExtra(oc, ELF_R_SYM(info), S)
@@ -3794,9 +3824,13 @@ do_Elf_Rela_relocations ( ObjectCode* oc, char* ehdrC,
 #endif
           }
          *(Elf64_Word *)P = (Elf64_Word)value;
+#endif
          break;
 
       case R_X86_64_32S:
+#if defined(ALWAYS_PIC)
+          barf("R_X86_64_32S relocation, but ALWAYS_PIC.");
+#else
          if ((StgInt64)value > 0x7fffffffL || (StgInt64)value < -0x80000000L) {
 #if X86_64_ELF_NONPIC_HACK           
               StgInt64 pltAddress = (StgInt64) &makeSymbolExtra(oc, ELF_R_SYM(info), S)
@@ -3808,6 +3842,7 @@ do_Elf_Rela_relocations ( ObjectCode* oc, char* ehdrC,
 #endif
          }
          *(Elf64_Sword *)P = (Elf64_Sword)value;
+#endif
          break;
          
       case R_X86_64_GOTPCREL:
@@ -3820,6 +3855,9 @@ do_Elf_Rela_relocations ( ObjectCode* oc, char* ehdrC,
       
       case R_X86_64_PLT32:
       {
+#if defined(ALWAYS_PIC)
+          barf("R_X86_64_PLT32 relocation, but ALWAYS_PIC.");
+#else
          StgInt64 off = value - P;
          if (off >= 0x7fffffffL || off < -0x80000000L) {
               StgInt64 pltAddress = (StgInt64) &makeSymbolExtra(oc, ELF_R_SYM(info), S)
@@ -3827,6 +3865,7 @@ do_Elf_Rela_relocations ( ObjectCode* oc, char* ehdrC,
               off = pltAddress + A - P;
          }
          *(Elf64_Word *)P = (Elf64_Word)off;
+#endif
          break;
       }
 #endif
@@ -4021,12 +4060,18 @@ static int ocVerifyImage_MachO(ObjectCode* oc)
     char *image = (char*) oc->image;
     struct mach_header *header = (struct mach_header*) image;
 
-#if x86_64_TARGET_ARCH || powerpc64_TARGET_ARCH
-    if(header->magic != MH_MAGIC_64)
+#if x86_64_HOST_ARCH || powerpc64_HOST_ARCH
+    if(header->magic != MH_MAGIC_64) {
+        errorBelch("%s: Bad magic. Expected: %08x, got: %08x.\n",
+                   oc->fileName, MH_MAGIC_64, header->magic);
         return 0;
+    }
 #else
-    if(header->magic != MH_MAGIC)
+    if(header->magic != MH_MAGIC) {
+        errorBelch("%s: Bad magic. Expected: %08x, got: %08x.\n",
+                   oc->fileName, MH_MAGIC, header->magic);
         return 0;
+    }
 #endif
     // FIXME: do some more verifying here
     return 1;
@@ -4812,12 +4857,18 @@ static int machoGetMisalignment( FILE * f )
     fread(&header, sizeof(header), 1, f);
     rewind(f);
 
-#if x86_64_TARGET_ARCH || powerpc64_TARGET_ARCH
-    if(header.magic != MH_MAGIC_64)
+#if x86_64_HOST_ARCH || powerpc64_HOST_ARCH
+    if(header.magic != MH_MAGIC_64) {
+        errorBelch("Bad magic. Expected: %08x, got: %08x.\n",
+                   MH_MAGIC_64, header->magic);
         return 0;
+    }
 #else
-    if(header.magic != MH_MAGIC)
+    if(header.magic != MH_MAGIC) {
+        errorBelch("Bad magic. Expected: %08x, got: %08x.\n",
+                   MH_MAGIC, header->magic);
         return 0;
+    }
 #endif
 
     misalignment = (header.sizeofcmds + sizeof(header))
@@ -4828,4 +4879,3 @@ static int machoGetMisalignment( FILE * f )
 #endif
 
 #endif
-
Glasgow Haskell Compiler with heterogeneous metaprogramming (generalized arrows and modal types)