Fix crasher and generate PIC for iOS simulator

Had an embarrassing thinko in the assembler generation for the iOS
simulator, had forgotten the $ for a literal number. While at it, make
also the simulator read-only code snippet data structures
position-independent. Some minor comment improvements. Bridge seems to
work now on simulator.

bridges/source/cpp_uno/gcc3_ios_arm/cpp2uno.cxx

@@ -367,11 +367,7 @@ extern "C" void cpp_vtable_call(
 //==================================================================================================
 extern "C" { 
 extern int nFunIndexes, nVtableOffsets;
-#ifdef __arm
 extern int codeSnippets[];
-#else
-extern unsigned char **codeSnippets;
-#endif
 }
 
 unsigned char * codeSnippet(
@@ -395,7 +391,7 @@ unsigned char * codeSnippet(
     return ((unsigned char *) &codeSnippets) + codeSnippets[functionIndex*nVtableOffsets*2 + vtableOffset*2 + bHasHiddenParam];
 #else
     enum { General, Void, Hyper, Float, Double, Class } exec;
-    int flag = 0;
+    bool bHasHiddenParam = false;
     if (pReturnTypeRef == 0) {
         exec = Void;
     }
@@ -434,7 +430,7 @@ unsigned char * codeSnippet(
         case typelib_TypeClass_SEQUENCE:
         case typelib_TypeClass_INTERFACE:
         case typelib_TypeClass_ANY:
-            flag = 1;
+            bHasHiddenParam = 1;
             exec = Class;
             break;
         default:
@@ -443,7 +439,12 @@ unsigned char * codeSnippet(
         }
     }
 
-    return codeSnippets[functionIndex*nVtableOffsets*6*2 + vtableOffset*6*2 + exec*2 + flag];
+    // The codeSnippets table is indexed by functionIndex, vtableOffset, exec and flag
+
+    fprintf(stderr, "Indexing codeSnippets with %ld [%ld,%ld,%d,%d]\n",
+            functionIndex*nVtableOffsets*6*2 + vtableOffset*6*2 + exec*2 + bHasHiddenParam,
+            functionIndex, vtableOffset, (int) exec, bHasHiddenParam);
+    return ((unsigned char *) &codeSnippets) + codeSnippets[functionIndex*nVtableOffsets*6*2 + vtableOffset*6*2 + exec*2 + bHasHiddenParam];
 #endif
 }
 
@@ -548,6 +549,7 @@ unsigned char * bridges::cpp_uno::shared::VtableFactory::addLocalFunctions(
 
 void bridges::cpp_uno::shared::VtableFactory::flushCode(
     unsigned char const *, unsigned char const *)
-{}
+{
+}
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

bridges/source/cpp_uno/gcc3_ios_arm/except.cxx

@@ -52,7 +52,6 @@ using namespace ::rtl;
 using namespace ::com::sun::star::uno;
 using namespace ::__cxxabiv1;
 
-
 namespace CPPU_CURRENT_NAMESPACE
 {
 
@@ -253,7 +252,6 @@ void raiseException( uno_Any * pUnoExc, uno_Mapping * pUno2Cpp )
 
     // destruct uno exception
     ::uno_any_destruct( pUnoExc, 0 );
-    // avoiding locked counts
 	rtti = (type_info *)RTTISingleton::get().getRTTI( (typelib_CompoundTypeDescription *) pTypeDescr );
     TYPELIB_DANGER_RELEASE( pTypeDescr );
     OSL_ENSURE( rtti, "### no rtti for throwing exception!" );

bridges/source/cpp_uno/gcc3_ios_arm/generate-snippets.pl

@@ -42,11 +42,13 @@ sub gen_x86 ($$$)
 {
     my ($funIndex, $vtableOffset, $executor) = @_;
     printf ("codeSnippet%08x%d%s:\n", $funIndex, $vtableOffset, $executor);
-    printf ("\tmovl %#08x, %%eax\n", $funIndex);
+    printf ("\tmovl \$%#08x, %%eax\n", $funIndex);
     printf ("\tmovl \$%d, %%edx\n", $vtableOffset);
     printf ("\tjmp _privateSnippetExecutor%s\n", $executor);
 }
 
+printf (".text\n");
+
 printf ("#ifdef __arm\n");
 printf ("\t.align 4\n");
 
@@ -60,6 +62,7 @@ foreach my $funIndex (0 .. $nFunIndexes-1)
 }
 
 printf ("#else\n");
+printf ("\t.align 1, 0x90\n");
 
 foreach my $funIndex (0 .. $nFunIndexes-1)
 {
@@ -96,8 +99,8 @@ foreach my $funIndex (0 .. $nFunIndexes-1)
 	printf ("#else\n");
 	foreach my $executor ('General', 'Void', 'Hyper', 'Float', 'Double', 'Class')
 	{
-	    printf ("\t.long codeSnippet%08x%d%s\n", $funIndex, $vtableOffset, $executor);
+	    printf ("\t.long codeSnippet%08x%d%s - _codeSnippets\n", $funIndex, $vtableOffset, $executor);
-	    printf ("\t.long codeSnippet%08x%d%s\n", $funIndex|0x80000000, $vtableOffset, $executor);
+	    printf ("\t.long codeSnippet%08x%d%s - _codeSnippets\n", $funIndex|0x80000000, $vtableOffset, $executor);
 	}
 	printf ("#endif\n");
     }

bridges/source/cpp_uno/gcc3_ios_arm/makefile.mk

@@ -68,7 +68,7 @@ SHL1STDLIBS= \
 .INCLUDE :  target.mk
 
 $(SLO)/helper.obj: helper.S $(MISC)/codesnippets.S generate-snippets.pl
-    $(CC) -c -I $(MISC) -o $(SLO)/helper.o helper.S
+    $(CC) $(CFLAGS) -c -I $(MISC) -o $(SLO)/helper.o helper.S
     touch $@
 
 $(MISC)/codesnippets.S: generate-snippets.pl

bridges/source/cpp_uno/gcc3_ios_arm/share.hxx

@@ -450,7 +450,7 @@ namespace abi = __cxxabiv1;
 #endif // __RTTI_H
 
 // As this code is used both for the simulatos (x86) and device (ARM),
-// this file is a combination of the share.hxx in ../gcc3_linux_intel
+// this file is a combination of the share.hxx in ../gcc3_macosx_intel
 // and in ../gcc3_linux_arm.
 
 #ifdef __arm
@@ -473,9 +473,10 @@ namespace CPPU_CURRENT_NAMESPACE
         __cxa_exception *nextException;
 
         int handlerCount;
+
 #ifdef __ARM_EABI__
-    __cxa_exception *nextPropagatingException;
+        __cxa_exception *nextPropagatingException;
-    int propagationCount;
+        int propagationCount;
 #else
         int handlerSwitchValue;
         const unsigned char *actionRecord;
@@ -545,6 +546,8 @@ struct __cxa_exception
     void *catchTemp;
     void *adjustedPtr;
 
+    size_t referenceCount;
+
     _Unwind_Exception unwindHeader;
 };