enable powerpc build for process=interpret (won't run yet, though)

makefile

@@ -346,7 +346,7 @@ $(binaryToMacho): $(src)/binaryToMacho.cpp
 $(classpath-object): $(build)/classpath.jar $(binaryToMacho)
 	@echo "creating $(@)"
 ifeq ($(platform),darwin)
-	$(binaryToMacho) $(build)/classpath.jar \
+	$(binaryToMacho) $(asm) $(build)/classpath.jar \
 		__binary_classpath_jar_start __binary_classpath_jar_end > $(@)
 else
 	(wd=$$(pwd); \

src/binaryToMacho.cpp

@@ -20,6 +20,8 @@
 #include "mach-o/loader.h"
 #include "mach-o/nlist.h"
 
+
+
 namespace {
 
 inline unsigned
@@ -29,16 +31,27 @@ pad(unsigned n)
 }
 
 void
-writeObject(FILE* out, const uint8_t* data, unsigned size,
+writeObject(const char* architecture,
+            FILE* out, const uint8_t* data, unsigned size,
             const char* startName, const char* endName)
 {
   unsigned startNameLength = strlen(startName) + 1;
   unsigned endNameLength = strlen(endName) + 1;
 
+  cpu_type_t cpuType;
+  cpu_subtype_t cpuSubtype;
+  if (strcmp(architecture, "x86") == 0) {
+    cpuType = CPU_TYPE_I386;
+    cpuSubtype = CPU_SUBTYPE_I386_ALL;
+  } else if (strcmp(architecture, "powerpc") == 0) {
+    cpuType = CPU_TYPE_POWERPC;
+    cpuSubtype = CPU_SUBTYPE_POWERPC_ALL;
+  }
+
   mach_header header = {
     MH_MAGIC, // magic
-    CPU_TYPE_I386, // cputype
-    CPU_SUBTYPE_I386_ALL, // cpusubtype
+    cpuType,
+    cpuSubtype,
     MH_OBJECT, // filetype,
     2, // ncmds
     sizeof(segment_command)
@@ -136,16 +149,17 @@ writeObject(FILE* out, const uint8_t* data, unsigned size,
 int
 main(int argc, const char** argv)
 {
-  if (argc != 4) {
+  if (argc != 5) {
     fprintf(stderr,
-            "usage: %s <input file> <start symbol name> <end symbol name>\n",
+            "usage: %s <architecture> <input file> <start symbol name> "
+            "<end symbol name>\n",
             argv[0]);
     return -1;
   }
 
   uint8_t* data = 0;
   unsigned size;
-  int fd = open(argv[1], O_RDONLY);
+  int fd = open(argv[2], O_RDONLY);
   if (fd != -1) {
     struct stat s;
     int r = fstat(fd, &s);
@@ -158,7 +172,7 @@ main(int argc, const char** argv)
   }
 
   if (data) {
-    writeObject(stdout, data, size, argv[2], argv[3]);
+    writeObject(argv[1], stdout, data, size, argv[3], argv[4]);
     munmap(data, size);
     return 0;
   } else {

src/powerpc.S

@@ -29,3 +29,12 @@ vmNativeCall:
 ;;    mtlr r0                                  ;    into the link register
 ;;    addi r1,r1,spaceToSaveAligned            ; restore stack pointer
    blr                                      ;    and branch to the return address
+   
+#ifdef __APPLE__
+.globl _vmJump
+_vmJump:
+#else
+.globl vmJump
+vmJump:
+#endif
+   blr