[Qemu-devel] [patch] Bugfix for 64-bit targets

[Paul Brook <paul@codesourcery.com>]

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The attached patch fixes a bug in arm target emulation on hosts where 
sizeof(int) > 4. On these targets the offset wouldn't be properly sign 
extended.

Paul

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Index: translate.c
===================================================================
RCS file: /cvsroot/qemu/qemu/target-arm/translate.c,v
retrieving revision 1.10
diff -u -p -r1.10 translate.c
--- translate.c	22 Jun 2004 10:55:49 -0000	1.10
+++ translate.c	11 Aug 2004 00:17:59 -0000
@@ -690,15 +867,15 @@ static void disas_arm_insn(DisasContext 
         case 0xa:
         case 0xb:
             {
-                int offset;
+                int32_t offset;
                 
                 /* branch (and link) */
-                val = (int)s->pc;
+                val = (int32_t)s->pc;
                 if (insn & (1 << 24)) {
                     gen_op_movl_T0_im(val);
                     gen_op_movl_reg_TN[0][14]();
                 }
-                offset = (((int)insn << 8) >> 8);
+                offset = (((int32_t)insn << 8) >> 8);
                 val += (offset << 2) + 4;
                 gen_op_jmp((long)s->tb, val);
                 s->is_jmp = DISAS_TB_JUMP;