规范化调整启动汇编，先初始化寄存器，再压栈，再开中断

2025-01-27 21:48:17 +08:00
parent b75e724948
commit 0d20af8297
2 changed files with 20 additions and 14 deletions
--- a/tb/sw/src/slvStartup.S
+++ b/tb/sw/src/slvStartup.S
@@ -9,14 +9,7 @@

 _prog_start:

-	la t0, trap_entry
-	csrw mtvec, t0
-	li t0, 1 << 11
-	csrw mie, t0

-	csrr t0, mstatus
-	ori t0, t0, 1<<3
-	csrw mstatus, t0

 	li x1,  0
 	li x2,  0
@@ -50,7 +43,17 @@ _prog_start:
 	li x30, 0
 	li x31, 0

+	la t0, trap_entry
+	csrw mtvec, t0
+	li t0, 1 << 11
+	csrw mie, t0
+
 	li sp, 0x40011000
+
+	csrr t0, mstatus
+	ori t0, t0, 1<<3
+	csrw mstatus, t0
+
 	call main

 	ecall