elf: Update EM_MOXIE definition

EM_MOXIE now has a proper assigned elf code. Use it. Register the old
interim value as EM_MOXIE_OLD and accept either in elf loading.

Cc: Anthony Green <green@moxielogic.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

hw/moxie/moxiesim.c

@@ -34,6 +34,7 @@
 #include "hw/loader.h"
 #include "hw/char/serial.h"
 #include "exec/address-spaces.h"
+#include "elf.h"
 
 #define PHYS_MEM_BASE 0x80000000
 

include/elf.h

@@ -135,6 +135,9 @@ typedef int64_t  Elf64_Sxword;
 
 #define EM_TILEGX   191 /* TILE-Gx */
 
+#define EM_MOXIE           223     /* Moxie processor family */
+#define EM_MOXIE_OLD       0xFEED
+
 /* This is the info that is needed to parse the dynamic section of the file */
 #define DT_NULL		0
 #define DT_NEEDED	1

include/hw/elf_ops.h

@@ -305,6 +305,14 @@ static int glue(load_elf, SZ)(const char *name, int fd,
                 }
             }
             break;
+        case EM_MOXIE:
+            if (ehdr.e_machine != EM_MOXIE) {
+                if (ehdr.e_machine != EM_MOXIE_OLD) {
+                    ret = ELF_LOAD_WRONG_ARCH;
+                    goto fail;
+                }
+            }
+            break;
         default:
             if (elf_machine != ehdr.e_machine) {
                 ret = ELF_LOAD_WRONG_ARCH;

target-moxie/cpu.h

@@ -26,7 +26,7 @@
 
 #define CPUArchState struct CPUMoxieState
 
-#define ELF_MACHINE     0xFEED /* EM_MOXIE */
+#define ELF_MACHINE     EM_MOXIE
 
 #define MOXIE_EX_DIV0        0
 #define MOXIE_EX_BAD         1