save 48bytes when no need to switch task in interrupt handler

2019-10-06 15:51:34 +08:00
parent e5e905e9bb
commit b147d060fb
7 changed files with 72 additions and 198 deletions
--- a/board/QEMU_Spike/GCC/demo/start.S
+++ b/board/QEMU_Spike/GCC/demo/start.S
@@ -1,3 +1,4 @@
+.extern rv32_exception_entry
 .align 2
 .section .text.entry
    .globl _start
@@ -6,7 +7,7 @@ _start:
    csrc mstatus, 0x00000008 
    csrw mie, 0

-    la t0, rv32_trap_entry
+    la t0, rv32_exception_entry
    csrw mtvec, t0

    la sp, _stack_top