unwind-dw2.c: Add declarations for uw_update_context and uw_frame_state_for.

	* unwind-dw2.c: Add declarations for uw_update_context and
	uw_frame_state_for.
	* pa/hpux-unwind.h (pa_fallback_frame_state): When an export stub is
	detected, advance frame state and context once to skip over stub.

From-SVN: r113865

gcc/ChangeLog

+2006-05-17  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
+
+	* unwind-dw2.c: Add declarations for uw_update_context and
+	uw_frame_state_for.
+	* pa/hpux-unwind.h (pa_fallback_frame_state): When an export stub is
+	detected, advance frame state and context once to skip over stub.
+
 2006-05-17  Sebastian Pop  <pop@cri.ensmp.fr>
 
 	PR middle-end/20256

gcc/config/pa/hpux-unwind.h

@@ -155,7 +155,11 @@ pa_fallback_frame_state (struct _Unwind_Context *context,
       fs->regs.reg[0].how = REG_SAVED_OFFSET;
       fs->regs.reg[0].loc.offset = -24;
 
-      return _URC_NO_REASON;
+      /* Update context to describe the stub frame.  */
+      uw_update_context (context, fs);
+
+      /* Set up fs to describe the FDE for the caller of this stub.  */
+      return uw_frame_state_for (context, fs);
     }
   /* Check if the return address points to a relocation stub.  */
   else if (!TARGET_64BIT
@@ -171,7 +175,11 @@ pa_fallback_frame_state (struct _Unwind_Context *context,
       fs->regs.reg[0].how = REG_SAVED_OFFSET;
       fs->regs.reg[0].loc.offset = -8;
 
-      return _URC_NO_REASON;
+      /* Update context to describe the stub frame.  */
+      uw_update_context (context, fs);
+
+      /* Set up fs to describe the FDE for the caller of this stub.  */
+      return uw_frame_state_for (context, fs);
     }
 
   /* Check if the return address is an export stub as signal handlers

gcc/unwind-dw2.c

@@ -92,6 +92,10 @@ union unaligned
   signed s8 __attribute__ ((mode (DI)));
 } __attribute__ ((packed));
 
+static void uw_update_context (struct _Unwind_Context *, _Unwind_FrameState *);
+static _Unwind_Reason_Code uw_frame_state_for (struct _Unwind_Context *,
+					       _Unwind_FrameState *);
+
 static inline void *
 read_pointer (const void *p) { const union unaligned *up = p; return up->p; }