Fix the wrong access of ipi pending address (#99)

The MENTRY_IPI_PENDING_OFFSET offset is based on stack pointer
8 years ago · 8ff2222893
1 changed files with 2 additions and 2 deletions
--- a/machine/mentry.S
+++ b/machine/mentry.S
@ -76,8 +76,8 @@ trap_vector:
  addi a0, sp, MENTRY_IPI_PENDING_OFFSET
  amoswap.w a0, x0, (a0)
 #else
-  lw a0, MENTRY_IPI_PENDING_OFFSET(a0)
-  sw x0, MENTRY_IPI_PENDING_OFFSET(a0)
+  lw a0, MENTRY_IPI_PENDING_OFFSET(sp)
+  sw x0, MENTRY_IPI_PENDING_OFFSET(sp)
 #endif
  and a1, a0, IPI_SOFT
  beqz a1, 1f