[GitHub] [incubator-nuttx] anchao commented on a diff in pull request #6099: arch/armv7-[a|r]: correct the handing of group env switch

[GitBox <gi...@apache.org>]

anchao commented on code in PR #6099:
URL: https://github.com/apache/incubator-nuttx/pull/6099#discussion_r852612561


##########
arch/arm/src/armv7-r/arm_syscall.c:
##########
@@ -526,10 +535,37 @@ uint32_t *arm_syscall(uint32_t *regs)
         break;
     }
 
+#ifdef CONFIG_ARCH_ADDRENV
+  /* Check for a context switch.  If a context switch occurred, then
+   * CURRENT_REGS will have a different value than it did on entry.  If an
+   * interrupt level context switch has occurred, then establish the correct
+   * address environment before returning from the interrupt.
+   */
+
+  if (regs != CURRENT_REGS)

Review Comment:
   Done



##########
arch/arm/src/arm/arm_syscall.c:
##########
@@ -118,6 +130,13 @@ uint32_t *arm_syscall(uint32_t *regs)
         break;
     }
 
+  /* Set CURRENT_REGS to NULL to indicate that we are no longer in an
+   * interrupt handler.
+   */
+
+  regs = (uint32_t *)CURRENT_REGS;

Review Comment:
   Done



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