gdb

	* ax-general.c (aop_map): Add pick and rot.
	* dwarf2loc.c (compile_dwarf_to_ax) <DW_OP_over>: Reimplement.
	<DW_OP_rot>: Implement.
	* ax.h (enum agent_op) <aop_pick, aop_rot>: New constants.
	(ax_pick): Declare.
	* ax-general.c (ax_pick): New function.
doc
	* agentexpr.texi (Bytecode Descriptions): Document pick and rot.
gdbserver
	* tracepoint.c (enum gdb_agent_op) <gdb_agent_op_pick,
	gdb_agent_op_rot>: New constants.
	(gdb_agent_op_names): Add pick and roll.
	(eval_agent_expr) <gdb_agent_op_pick, gdb_agent_op_rot>: New
	cases.

1 files changed, 14 insertions, 0 deletions

diff --git a/gdb/ax-general.c b/gdb/ax-general.c
index 71d23f1..8d95855 100644
--- a/gdb/ax-general.c
+++ b/gdb/ax-general.c
@@ -143,6 +143,17 @@ ax_simple (struct agent_expr *x, enum agent_op op)
   x->buf[x->len++] = op;
 }
 
+/* Append a pick operator to EXPR.  DEPTH is the stack item to pick,
+   with 0 being top of stack.  */
+void
+ax_pick (struct agent_expr *x, int depth)
+{
+  if (depth < 0 || depth > 255)
+    error (_("GDB bug: ax-general.c (ax_pick): stack depth out of range"));
+  ax_simple (x, aop_pick);
+  append_const (x, 1, depth);
+}
+
 
 /* Append a sign-extension or zero-extension instruction to EXPR, to
    extend an N-bit value.  */
@@ -376,6 +387,9 @@ struct aop_map aop_map[] =
   {"tracev", 2, 0, 0, 1},	/* 0x2e */
   {0, 0, 0, 0, 0},		/* 0x2f */
   {"trace16", 2, 0, 1, 1},	/* 0x30 */
+  {0, 0, 0, 0, 0},		/* 0x31 */
+  {"pick", 1, 0, 0, 1},		/* 0x32 */
+  {"rot", 0, 0, 3, 3},		/* 0x33 */
 };