Changes in kernel/arch/arm64/src/arm64.c [5a5269d:db17889] in mainline

File:

• kernel/arch/arm64/src/arm64.c (modified) (2 diffs)

kernel/arch/arm64/src/arm64.c

@@ -167 +167 @@
         asm volatile (
             /*
-             * Clear all general-purpose registers, except x0 that holds an
-             * argument for the user space.
+             * Reset the kernel stack to its base value.
+             *
+             * Clear all general-purpose registers,
+             * except x0 that holds an argument for
+             * the user space.
              */
+            "mov sp, %[kstack]\n"
             "mov x0, %[uspace_uarg]\n"
             "mov x1, #0\n"
@@ -202 +206 @@
             "mov x30, #0\n"
             "eret\n"
-            :: [uspace_uarg] "r" (kernel_uarg->uspace_uarg)
+            :: [uspace_uarg] "r" (kernel_uarg->uspace_uarg),
+              [kstack] "r" (((uint64_t) (THREAD->kstack)) +
+              MEM_STACK_SIZE - SP_DELTA)
         );