initial sparc64 support


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1256 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index 09c33aa..684e70e 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -94,11 +94,33 @@
 #endif
 
 #ifdef TARGET_SPARC
+#ifdef TARGET_SPARC64
 
 #define ELF_START_MMAP 0x80000000
 
 #define elf_check_arch(x) ( (x) == EM_SPARC )
 
+#define ELF_CLASS   ELFCLASS64
+#define ELF_DATA    ELFDATA2MSB
+#define ELF_ARCH    EM_SPARC
+
+/*XXX*/
+#define ELF_PLAT_INIT(_r)
+
+static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
+{
+    regs->tstate = 0;
+    regs->pc = infop->entry;
+    regs->npc = regs->pc + 4;
+    regs->y = 0;
+    regs->u_regs[14] = infop->start_stack - 16 * 4;
+}
+
+#else
+#define ELF_START_MMAP 0x80000000
+
+#define elf_check_arch(x) ( (x) == EM_SPARC )
+
 #define ELF_CLASS   ELFCLASS32
 #define ELF_DATA    ELFDATA2MSB
 #define ELF_ARCH    EM_SPARC
@@ -116,6 +138,7 @@
 }
 
 #endif
+#endif
 
 #ifdef TARGET_PPC