[Qemu-devel] [5211] alpha: fix lit sign

[Aurelien Jarno]

Revision: 5211
          http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=5211
Author:   aurel32
Date:     2008-09-14 16:09:15 +0000 (Sun, 14 Sep 2008)

Log Message:
-----------
alpha: fix lit sign

according to the alpha arch reference, the literal field of an operate
instruction is unsigned:

If bit <12> of the instruction is 1, an 8-bit zero-extended literal
constant is formed by bits
<20:13> of the instruction. The l teral is interpreted as a positive
integer bet ween 0 and 255
and is zero-extended to 64 bits.

This patch fixes the mis-interpretation of the literal field.

(Tristan Gingold)

Modified Paths:
--------------
    trunk/target-alpha/translate.c

Modified: trunk/target-alpha/translate.c
===================================================================
--- trunk/target-alpha/translate.c      2008-09-14 13:59:34 UTC (rev 5210)
+++ trunk/target-alpha/translate.c      2008-09-14 16:09:15 UTC (rev 5211)
@@ -351,7 +351,7 @@
 
 static always_inline void gen_arith2 (DisasContext *ctx,
                                       void (*gen_arith_op)(void),
-                                      int rb, int rc, int islit, int8_t lit)
+                                      int rb, int rc, int islit, uint8_t lit)
 {
     if (islit)
         tcg_gen_movi_i64(cpu_T[0], lit);
@@ -367,7 +367,7 @@
 static always_inline void gen_arith3 (DisasContext *ctx,
                                       void (*gen_arith_op)(void),
                                       int ra, int rb, int rc,
-                                      int islit, int8_t lit)
+                                      int islit, uint8_t lit)
 {
     if (ra != 31)
         tcg_gen_mov_i64(cpu_T[0], cpu_ir[ra]);
@@ -387,7 +387,7 @@
 static always_inline void gen_cmov (DisasContext *ctx,
                                     void (*gen_test_op)(void),
                                     int ra, int rb, int rc,
-                                    int islit, int8_t lit)
+                                    int islit, uint8_t lit)
 {
     if (ra != 31)
         tcg_gen_mov_i64(cpu_T[0], cpu_ir[ra]);