From 330903ad8189707069d8dff597ccf00706f35e94 Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Thu, 31 Aug 2006 15:59:14 -0700
Subject: [PATCH] Parse negative integers for imm32s, and don't exceed the IP
 count width field.

This fixes the while test.
---
 assembler/src/gram.y | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/assembler/src/gram.y b/assembler/src/gram.y
index 2a4b05fc..64b73361 100644
--- a/assembler/src/gram.y
+++ b/assembler/src/gram.y
@@ -1010,7 +1010,7 @@ relativelocation: imm32
 
 		  $$.reg_file = BRW_IMMEDIATE_VALUE;
 		  $$.reg_type = BRW_REGISTER_TYPE_D;
-		  $$.imm32 = $1;
+		  $$.imm32 = (int)$1 & 0x0000ffff;
 		}
 ;
 
@@ -1151,6 +1151,7 @@ writemask_w:	/* empty */ { $$ = 0; }
 
 /* 1.4.11: Immediate values */
 imm32:		INTEGER { $$ = $1; }
+		| MINUS INTEGER { $$ = -$2; }
 		| NUMBER { $$ = $1; }
 ;