Changeset 418 for trunk/hal/tsar_mips32/core/hal_syscall.c

Timestamp:

Jan 8, 2018, 2:25:39 PM (6 years ago)

Author:

alain

Message:

Fix a bug in hal_kentry.S : the "uzone" pointer in the thread descriptor
must not be modified in case of interrupt.

File:

• trunk/hal/tsar_mips32/core/hal_syscall.c (modified) (3 diffs)

trunk/hal/tsar_mips32/core/hal_syscall.c

@@ -29 +29 @@
 #include <hal_kentry.h>
 
+// @@@
+// __attribute__((section(".kdata"))) uint32_t * enter_uzone;
+// __attribute__((section(".kdata"))) uint32_t * exit_uzone;
+// @@@
 
 /////////////////////
@@ -69 +73 @@
     exit_uzone = (uint32_t *)this->uzone;
 
+// printk("\n@@@ %s exit : enter_uzone = %x / exit_uzone = %x\n",
+// __FUNCTION__ , enter_uzone , exit_uzone );
+
     // set syscall return value to uzone 
         exit_uzone[UZ_V0] = retval;
@@ -75 +82 @@
         exit_uzone[UZ_EPC] += 4;
 
+    hal_fence();
 }