Use the new TARGET_ABI32 feature to implement a ppc64abi32-linux-user target

  (PowerPC 64 running in 32 bits mode).
Use the new TARGET_ABI_DIR feature to implement a ppcemb-linux-user target
  (PowerPC 32 with 64 bits GPRs and vector extensions).


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3409 c046a42c-6fe2-441c-8c8c-71466251a162

configure

@@ -504,7 +504,7 @@ if test -z "$target_list" ; then
     fi
 # the following are Linux specific
     if [ "$linux_user" = "yes" ] ; then
-        target_list="i386-linux-user arm-linux-user armeb-linux-user sparc-linux-user sparc64-linux-user sparc32plus-linux-user mips-linux-user mipsel-linux-user m68k-linux-user alpha-linux-user sh4-linux-user ppc-linux-user ppc64-linux-user x86_64-linux-user cris-linux-user $target_list"
+        target_list="i386-linux-user arm-linux-user armeb-linux-user sparc-linux-user sparc64-linux-user sparc32plus-linux-user mips-linux-user mipsel-linux-user m68k-linux-user alpha-linux-user sh4-linux-user ppc-linux-user ppcemb-linux-user ppc64-linux-user ppc64abi32-linux-user x86_64-linux-user cris-linux-user $target_list"
     fi
 # the following are Darwin specific
     if [ "$darwin_user" = "yes" ] ; then
@@ -937,6 +937,7 @@ target_bigendian="no"
 [ "$target_cpu" = "ppc" ] && target_bigendian=yes
 [ "$target_cpu" = "ppcemb" ] && target_bigendian=yes
 [ "$target_cpu" = "ppc64" ] && target_bigendian=yes
+[ "$target_cpu" = "ppc64abi32" ] && target_bigendian=yes
 [ "$target_cpu" = "ppc64h" ] && target_bigendian=yes
 [ "$target_cpu" = "mips" ] && target_bigendian=yes
 [ "$target_cpu" = "mipsn32" ] && target_bigendian=yes
@@ -1040,6 +1041,7 @@ elif test "$target_cpu" = "ppc" ; then
   echo "#define TARGET_PPC 1" >> $config_h
 elif test "$target_cpu" = "ppcemb" ; then
   echo "TARGET_ARCH=ppcemb" >> $config_mak
+  echo "TARGET_ABI_DIR=ppc" >> $config_mak
   echo "#define TARGET_ARCH \"ppcemb\"" >> $config_h
   echo "#define TARGET_PPC 1" >> $config_h
   echo "#define TARGET_PPCEMB 1" >> $config_h
@@ -1048,6 +1050,13 @@ elif test "$target_cpu" = "ppc64" ; then
   echo "#define TARGET_ARCH \"ppc64\"" >> $config_h
   echo "#define TARGET_PPC 1" >> $config_h
   echo "#define TARGET_PPC64 1" >> $config_h
+elif test "$target_cpu" = "ppc64abi32" ; then
+  echo "TARGET_ARCH=ppc64" >> $config_mak
+  echo "#define TARGET_ARCH \"ppc64\"" >> $config_h
+  echo "TARGET_ABI_DIR=ppc" >> $config_mak
+  echo "#define TARGET_PPC 1" >> $config_h
+  echo "#define TARGET_PPC64 1" >> $config_h
+  echo "#define TARGET_ABI32 1" >> $config_h
 elif test "$target_cpu" = "ppc64h" ; then
   echo "TARGET_ARCH=ppc64h" >> $config_mak
   echo "#define TARGET_ARCH \"ppc64h\"" >> $config_h

linux-user/elfload.c

@@ -269,7 +269,7 @@ static inline void init_thread(struct target_pt_regs *regs, struct image_info *i
 
 #define ELF_START_MMAP 0x80000000
 
-#ifdef TARGET_PPC64
+#if defined(TARGET_PPC64) && !defined(TARGET_ABI32)
 
 #define elf_check_arch(x) ( (x) == EM_PPC64 )
 
@@ -325,13 +325,13 @@ static inline void init_thread(struct target_pt_regs *_regs, struct image_info *
 {
     abi_ulong pos = infop->start_stack;
     abi_ulong tmp;
-#ifdef TARGET_PPC64
+#if defined(TARGET_PPC64) && !defined(TARGET_ABI32)
     abi_ulong entry, toc;
 #endif
 
     _regs->msr = 1 << MSR_PR; /* Set user mode */
     _regs->gpr[1] = infop->start_stack;
-#ifdef TARGET_PPC64
+#if defined(TARGET_PPC64) && !defined(TARGET_ABI32)
     entry = ldq_raw(infop->entry) + infop->load_addr;
     toc = ldq_raw(infop->entry + 8) + infop->load_addr;
     _regs->gpr[2] = toc;

linux-user/main.c

@@ -1008,7 +1008,7 @@ void cpu_loop(CPUPPCState *env)
                       "Aborting\n");
             break;
 #endif /* defined(TARGET_PPCEMB) */
-#if defined(TARGET_PPC64) /* PowerPC 64 */
+#if defined(TARGET_PPC64) && !defined(TARGET_ABI32) /* PowerPC 64 */
         case POWERPC_EXCP_DSEG:     /* Data segment exception                */
             cpu_abort(env, "Data segment exception while in user mode. "
                       "Aborting\n");
@@ -1017,19 +1017,21 @@ void cpu_loop(CPUPPCState *env)
             cpu_abort(env, "Instruction segment exception "
                       "while in user mode. Aborting\n");
             break;
-#endif /* defined(TARGET_PPC64) */
-#if defined(TARGET_PPC64H) /* PowerPC 64 with hypervisor mode support */
+#endif /* defined(TARGET_PPC64) && !defined(TARGET_ABI32) */
+#if defined(TARGET_PPC64H) && !defined(TARGET_ABI32)
+        /* PowerPC 64 with hypervisor mode support */
         case POWERPC_EXCP_HDECR:    /* Hypervisor decrementer exception      */
             cpu_abort(env, "Hypervisor decrementer interrupt "
                       "while in user mode. Aborting\n");
             break;
-#endif /* defined(TARGET_PPC64H) */
+#endif /* defined(TARGET_PPC64H) && !defined(TARGET_ABI32) */
         case POWERPC_EXCP_TRACE:    /* Trace exception                       */
             /* Nothing to do:
              * we use this exception to emulate step-by-step execution mode.
              */
             break;
-#if defined(TARGET_PPC64H) /* PowerPC 64 with hypervisor mode support */
+#if defined(TARGET_PPC64H) && !defined(TARGET_ABI32)
+        /* PowerPC 64 with hypervisor mode support */
         case POWERPC_EXCP_HDSI:     /* Hypervisor data storage exception     */
             cpu_abort(env, "Hypervisor data storage exception "
                       "while in user mode. Aborting\n");
@@ -1046,7 +1048,7 @@ void cpu_loop(CPUPPCState *env)
             cpu_abort(env, "Hypervisor instruction segment exception "
                       "while in user mode. Aborting\n");
             break;
-#endif /* defined(TARGET_PPC64H) */
+#endif /* defined(TARGET_PPC64H) && !defined(TARGET_ABI32) */
         case POWERPC_EXCP_VPU:      /* Vector unavailable exception          */
             EXCP_DUMP(env, "No Altivec instructions allowed\n");
             info.si_signo = TARGET_SIGILL;
@@ -2170,8 +2172,10 @@ int main(int argc, char **argv)
             if (i != 12 && i != 6 && i != 13)
                 env->msr[i] = (regs->msr >> i) & 1;
         }
-#if defined(TARGET_PPC64)
+#if defined(TARGET_PPC64) && !defined(TARGET_ABI32)
         msr_sf = 1;
+#else
+        msr_sf = 0;
 #endif
         env->nip = regs->nip;
         for(i = 0; i < 32; i++) {