diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 137cf704a0..12cdcd25d8 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,9 @@
+2007-02-27  Fred Fish  <fnf@specifix.com>
+
+	* rs6000-tdep.c (skip_prologue): Recognize addi instructions that 
+	directly decrement the stack pointer, accumulate their operand into 
+	the stack offset, and mark the function as not being frameless.
+
 2007-02-26  Daniel Jacobowitz  <dan@codesourcery.com>
 
 	* arch-utils.c (selected_byte_order): New.
diff --git a/gdb/rs6000-tdep.c b/gdb/rs6000-tdep.c
index cf9eefb248..e107114f93 100644
--- a/gdb/rs6000-tdep.c
+++ b/gdb/rs6000-tdep.c
@@ -1219,6 +1219,13 @@ skip_prologue (CORE_ADDR pc, CORE_ADDR lim_pc, struct rs6000_framedata *fdata)
 	  offset = fdata->offset;
 	  continue;
 	}
+      else if ((op & 0xffff0000) == 0x38210000)
+ 	{			/* addi r1,r1,SIMM */
+ 	  fdata->frameless = 0;
+ 	  fdata->offset += SIGNED_SHORT (op);
+ 	  offset = fdata->offset;
+ 	  continue;
+ 	}
       /* Load up minimal toc pointer */
       else if (((op >> 22) == 0x20f	||	/* l r31,... or l r30,... */
 	       (op >> 22) == 0x3af)		/* ld r31,... or ld r30,... */