删除文件 Port/port_x32/RISC-V32/port_rv32_FSL.S

2026-08-17 08:42:13 +08:00 · 2026-08-14 12:03:53 +00:00
parent 7ee44c7713
commit 4e9c468ff5
1 changed files with 0 additions and 69 deletions
@@ -1,69 +0,0 @@
-/**************************************************************************//**
- * @item     CosyOS-III Port
- * @file     port_rv32_FSL.S
- * @brief    RISC-V32 Core Port File for Interrupt FIFO Service Loading
- * @author   迟凯峰
- * @version  v3.0.1
- * @date     2026.07.30
- ******************************************************************************/
-
-#include "syscfg.h"
-#include "mcucfg_rv32.h"
-
-////////////////////////////////////////////////////////////////////////////////
-
-/* 中断FIFO服务装载器 */
-
-#if (SYSCFG_PENDSVFIFO_DEPTH > 0)
-
-.global mPendSV_FIFOLoader
-.align  2
-mPendSV_FIFOLoader:
-
-/* FIFO选择 */
-	la       a2,  m_fifo_lock
-	lb       a3, (a2)
-	beqz     a3,  1f
-	la       a1,  mPendSV_FIFO_0
-	j        2f
-1:	la       a1,  mPendSV_FIFO_1
-/* 计数溢出 */
-2:
-	#if (0) // 正常情况下计数器难以溢出，默认关闭防护以提高装载效率。
-	lw       a2, (a1)
-	li       a3,  0x80000000
-	bltu     a3,  a2,  4f
-	#endif
-/* FIFO计数 */
-	/* 0、关闭总中断（嵌套方式）*/
-	#if   (MCUCFG_PENDSVFIFO_MUTEX == 0)
-	csrr     a3,  mstatus
-	csrc     mstatus, 0x8
-	fence.i
-	lw       a2, (a1)
-	addi     a2,  a2,  1
-	sw       a2, (a1)
-	csrw     mstatus, a3
-	/* 1、[lr][sc]指令 */
-	#elif (MCUCFG_PENDSVFIFO_MUTEX == 1)
-3:	lr.w     a2, (a1)
-	addi     a2,  a2,  1
-	sc.w     a3,  a2, (a1)
-	bnez     a3,  3b
-	/* 2、[amoadd]指令 */
-	#elif (MCUCFG_PENDSVFIFO_MUTEX == 2)
-	li       a3,  1
-	amoadd.w a2,  a3, (a1)
-	addi     a2,  a2,  1
-	#endif
-/* FIFO溢出 */
-	li       a3,  SYSCFG_PENDSVFIFO_DEPTH
-	bltu     a3,  a2,  4f
-/* FIFO装载 */
-	slli     a2,  a2,  2
-	add      a1,  a1,  a2
-	sw       a0, (a1)
-
-4:	ret
-
-#endif