Changeset 16 for trunk/hal/tsar_mips32/hal_special.c

Timestamp:

May 10, 2017, 5:04:01 PM (8 years ago)

Author:

alain

Message:

mprove the HAL for interrupt, exception, syscall handling.

File:

• trunk/hal/tsar_mips32/hal_special.c (modified) (2 diffs)

trunk/hal/tsar_mips32/hal_special.c

@@ -38 +38 @@
         asm volatile ("mfc0    %0,  $15, 1" : "=&r" (proc_id));
 
-        return (proc_id & 0xFFF);  // at most 4096 cores...
+        return (proc_id & 0x3FF);  // 4/4/2 format for TSAR
 }
 
@@ -186 +186 @@
 }
 
-
-
-
+//////////////////////////////////////////////////
+void hal_get_mmu_excp( intptr_t * mmu_ins_excp_code,
+                       intptr_t * mmu_ins_bad_vaddr,
+                       intptr_t * mmu_dat_excp_code,
+                       intptr_t * mmu_dat_bad_vaddr )
+{
+    asm volatile
+    ( "mfc2   %0,    $11        \n"
+      "mfc2   %1,    $13        \n"
+      "mfc2   %2,    $12        \n"
+      "mfc2   %3,    $14        \n"
+      : "=&r"(mmu_ins_excp_code),
+        "=&r"(mmu_ins_bad_vaddr),
+        "=&r"(mmu_dat_excp_code),
+        "=&r"(mmu_dat_bad_vaddr) );
+}