TCG: Use gen_opc_buf from context instead of global variable.

Signed-off-by: Evgeny Voevodin <e.voevodin@samsung.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
diff --git a/target-mips/translate.c b/target-mips/translate.c
index cc126f5..8b438f8 100644
--- a/target-mips/translate.c
+++ b/target-mips/translate.c
@@ -15513,7 +15513,7 @@
         qemu_log("search pc %d\n", search_pc);
 
     pc_start = tb->pc;
-    gen_opc_end = gen_opc_buf + OPC_MAX_SIZE;
+    gen_opc_end = tcg_ctx.gen_opc_buf + OPC_MAX_SIZE;
     ctx.pc = pc_start;
     ctx.saved_pc = -1;
     ctx.singlestep_enabled = env->singlestep_enabled;
@@ -15549,7 +15549,7 @@
         }
 
         if (search_pc) {
-            j = tcg_ctx.gen_opc_ptr - gen_opc_buf;
+            j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
             if (lj < j) {
                 lj++;
                 while (lj < j)
@@ -15633,7 +15633,7 @@
     gen_icount_end(tb, num_insns);
     *tcg_ctx.gen_opc_ptr = INDEX_op_end;
     if (search_pc) {
-        j = tcg_ctx.gen_opc_ptr - gen_opc_buf;
+        j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
         lj++;
         while (lj <= j)
             gen_opc_instr_start[lj++] = 0;