Changeset 427 for soft/giet_vm/giet_boot/boot_entry.S

Timestamp:

Oct 4, 2014, 3:18:01 PM (10 years ago)

Author:

alain

Message:

Introducing fixed format (X_WIDTH / Y_WIDTH / P_WIDTH) for processor index.

File:

• soft/giet_vm/giet_boot/boot_entry.S (modified) (1 diff)

soft/giet_vm/giet_boot/boot_entry.S

@@ -46 +46 @@
 
     mfc0   k0,      CP0_PROCID
-    andi   k0,      k0,     0x3FF   /* k0 <= proc_xyl                             */
-    la     t7,      NB_PROCS_MAX    /* t7 <= NBPROCS                              */
-    divu   k0,      t7
-    mfhi   t1                       /* t1 <= lpid                                 */
-    mflo   t2                       /* t2 <= cluster_xy                           */
-    srl    t3,      t2,     4       /* t3 <= x coordinate                         */
-    andi   t4,      t2,     0xF     /* t4 <= y coordinate                         */
-    la     t6,      Y_SIZE          /* t6 <= Y_SIZE                               */
+    andi   k0,      k0,     0xFFF             /* k0 <= proc_xyl                   */
+    andi   t1,      k0,     ((1<<P_WIDTH)-1)  /* t1 <= lpid                       */
+    srl    t2,      k0,     P_WIDTH           /* t2 <= cluster_xy                 */
+    srl    t3,      t2,     Y_WIDTH           /* t3 <= x coordinate               */
+    andi   t4,      t2,     ((1<<Y_WIDTH)-1)  /* t4 <= y coordinate               */
+    la     t6,      Y_SIZE                    /* t6 <= Y_SIZE                     */
     multu  t3,      t6
     mflo   t5
-    addu   t5,      t5,     t4      /* t5 <= cluster_id                           */
+    addu   t5,      t5,     t4                /* t5 <= cluster_id                 */
+    li     t7,      NB_PROCS_MAX
     multu  t5,      t7
     mflo   t0
-    addu   t0,      t0,     t1      /* t0 <= proc_id                              */
+    addu   t0,      t0,     t1                /* t0 <= proc_id                    */