From: Tristan Gingold <gingold@adacore.com>
Date: Mon, 15 Dec 2008 11:32:08 +0000 (+0000)
Subject: 2008-12-15  Tristan Gingold  <gingold@adacore.com>
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=9f3fe11c951a7f5963a1548c553a0d481299d6f5;p=binutils-gdb.git

2008-12-15  Tristan Gingold  <gingold@adacore.com>

	* dwarf2expr.c (execute_stack_op): Handle DW_OP_swap.
---

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 493e5faf23c..4a4f5dfc1e4 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2008-12-15  Tristan Gingold  <gingold@adacore.com>
+
+	* dwarf2expr.c (execute_stack_op): Handle DW_OP_swap.
+
 2008-12-15  Jerome Guitton  <guitton@adacore.com>
 
 	* ada-lang.c (ada_value_slice_ptr): Rename to...
diff --git a/gdb/dwarf2expr.c b/gdb/dwarf2expr.c
index 707c0de3e16..de9cea861d1 100644
--- a/gdb/dwarf2expr.c
+++ b/gdb/dwarf2expr.c
@@ -514,6 +514,20 @@ execute_stack_op (struct dwarf_expr_context *ctx,
 	  offset = *op_ptr++;
 	  result = dwarf_expr_fetch (ctx, offset);
 	  break;
+	  
+	case DW_OP_swap:
+	  {
+	    CORE_ADDR t1, t2;
+
+	    if (ctx->stack_len < 2)
+	       error (_("Not enough elements for DW_OP_swap. Need 2, have %d."),
+		      ctx->stack_len);
+	    t1 = ctx->stack[ctx->stack_len - 1];
+	    t2 = ctx->stack[ctx->stack_len - 2];
+	    ctx->stack[ctx->stack_len - 1] = t2;
+	    ctx->stack[ctx->stack_len - 2] = t1;
+	    goto no_push;
+	  }
 
 	case DW_OP_over:
 	  result = dwarf_expr_fetch (ctx, 1);