进入中断，硬件自动禁用中断，出中断，自动开启中断，无需手动操作，删除对应的代码

tb/sw/src/mstStartup.S

@@ -128,15 +128,19 @@ trap_entry:
 	sw	t6,124(sp)
 #endif
 
+#if 0
     csrr t0, mstatus            # 读取 mstatus 寄存器
     andi t0, t0, ~(1 << 3)      # 清除 MIE 位 (全局中断禁用)
     csrw mstatus, t0            # 写回 mstatus 寄存器
+#endif
 
 	call plic_handle
 
+#if 0
 	csrr t0, mstatus
 	ori t0, t0, 1<<3
 	csrw mstatus, t0
+#endif
 
 	lw	ra,4(sp)
 	lw	sp,8(sp)
@@ -219,9 +223,11 @@ opt_trap_entry:
 	#sw	t5,120(sp)
 	#sw	t6,124(sp)
 
+#if 0
     csrr t0, mstatus            # 读取 mstatus 寄存器
     andi t0, t0, ~(1 << 3)      # 清除 MIE 位 (全局中断禁用)
     csrw mstatus, t0            # 写回 mstatus 寄存器
+#endif
 
 	lui	t1, %hi(plic_claim)		
 	lw	t0, %lo(plic_claim)(t1)	# t0 = &plic_claim
@@ -264,9 +270,11 @@ opt_trap_entry:
 	sw	s1,%lo(flag_intRxEnd)(s0)
 
 4:
+#if 0
 	csrr t0, mstatus
 	ori t0, t0, 1<<3
 	csrw mstatus, t0
+#endif
 
 	#lw	ra,4(sp)
 	#lw	sp,8(sp)

tb/sw/src/mstSvr.S

@@ -42,15 +42,17 @@ _prog_start:
 
 	.balign 32
 _rv32i_plic_handle:
+#if 0  	/*RV32的核心自动禁用中断，无需手动禁用*/
 	csrr 	x16, mstatus         	# 读取 mstatus 寄存器
     andi 	x16, x16, ~(1 << 3)    	# 清除 MIE 位 (全局中断禁用)
     csrw 	mstatus, x16           	# 写回 mstatus 寄存器
+#endif
 
 	lw 		x23, 0(x17)    			# x23 = *plic_claim
 	sw  	x23, 0(x17)				# *plic_claim = x23
 
 	#li 		x25, 1
-
+#if 0
 	li		x24, CDR_INT_TXEND
 	bne 	x23, x24, 1f   			#_if (x23 != x24) goto 1f
 	sw		x25, 0(x18)				#_else
@@ -72,9 +74,29 @@ _rv32i_plic_handle:
 	li  	x24, CDR_INT_RXEND
 	bne 	x23, x24, 4f			#_if (x23 != x24) goto 4f
 	sw		x25, 0(x21)				#_else
+#else
+	bne 	x23, x28, 1f   			#_if (x23 != x24) goto 1f
+	sw		x25, 0(x18)				#_else
+	j 		4f
 
+1:
+	bne 	x23, x29, 2f   			#_if (x23 != x24) goto 2f
+	sw		x25, 0(x19)				#_else
+	j 		4f
+
+2:
+	bne 	x23, x30, 3f			#_if (x23 != x24) goto 3f
+	sw		x25, 0(x20)				#_else
+	j 		4f
+
+3:
+	bne 	x23, x31, 4f			#_if (x23 != x24) goto 4f
+	sw		x25, 0(x21)				#_else
+#endif
 4:
+#if 0  /*RV32的核心自动启动中断，无需手动启用*/
 	csrr 	x16, mstatus
 	ori  	x16, x16, 1<<3
 	csrw 	mstatus, x16
+#endif
 	mret