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rt-thread-official/libcpu/risc-v/ch32v1/interrupt_gcc.S

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[bsp/ch32v103r-evt] add ch32v103r-evt bsp feat: move MRS demo source to bsp and libraries folder feat: update Sconscript feat: modify SConstruct in the bsp feat: use the rtconfig.py of gd32vf103v-eval bsp to modify feat: use the MRS's rtconfig.h temoporarily feat: update Kconfig files feat: use the MRS's .ld and rename as link.lds feat: add ch32v1 porting folder perf: remove board/system_ch32v10x.c fix: define SOC_ARM_SERIES_CH32V103 in rtconfig.h fix: add some neccessary macros in rtconfig.h perf: use the menuconfig to generate rtconfig.h feat: add readme.md fix: correct the bad encode in main.c fix: include board.h in main.c perf: check and update README.md perf: remove ch32f10x_port_cn.md feat: ignore the standard libraries's CI checking feat: add sdk_dist.py fix: correct some style errors again perf: simply the board/kconfig fix: format ch32v103r-evt fix: format drvs and libcpu
2022-04-04 11:07:49 +08:00
/*
* Copyright (c) 2006-2018, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-09-09 WCH the first version
*/
#include "cpuport.h"
.global SW_handler
.align 2
SW_handler:
/* save all from thread context */
#ifdef ARCH_RISCV_FPU
addi sp, sp, -32 * FREGBYTES
FSTORE f0, 0 * FREGBYTES(sp)
FSTORE f1, 1 * FREGBYTES(sp)
FSTORE f2, 2 * FREGBYTES(sp)
FSTORE f3, 3 * FREGBYTES(sp)
FSTORE f4, 4 * FREGBYTES(sp)
FSTORE f5, 5 * FREGBYTES(sp)
FSTORE f6, 6 * FREGBYTES(sp)
FSTORE f7, 7 * FREGBYTES(sp)
FSTORE f8, 8 * FREGBYTES(sp)
FSTORE f9, 9 * FREGBYTES(sp)
FSTORE f10, 10 * FREGBYTES(sp)
FSTORE f11, 11 * FREGBYTES(sp)
FSTORE f12, 12 * FREGBYTES(sp)
FSTORE f13, 13 * FREGBYTES(sp)
FSTORE f14, 14 * FREGBYTES(sp)
FSTORE f15, 15 * FREGBYTES(sp)
FSTORE f16, 16 * FREGBYTES(sp)
FSTORE f17, 17 * FREGBYTES(sp)
FSTORE f18, 18 * FREGBYTES(sp)
FSTORE f19, 19 * FREGBYTES(sp)
FSTORE f20, 20 * FREGBYTES(sp)
FSTORE f21, 21 * FREGBYTES(sp)
FSTORE f22, 22 * FREGBYTES(sp)
FSTORE f23, 23 * FREGBYTES(sp)
FSTORE f24, 24 * FREGBYTES(sp)
FSTORE f25, 25 * FREGBYTES(sp)
FSTORE f26, 26 * FREGBYTES(sp)
FSTORE f27, 27 * FREGBYTES(sp)
FSTORE f28, 28 * FREGBYTES(sp)
FSTORE f29, 29 * FREGBYTES(sp)
FSTORE f30, 30 * FREGBYTES(sp)
FSTORE f31, 31 * FREGBYTES(sp)
#endif
addi sp, sp, -32 * REGBYTES
STORE x5, 5 * REGBYTES(sp)
/* saved MPIE */
li t0, 0x80
STORE t0, 2 * REGBYTES(sp)
STORE x1, 1 * REGBYTES(sp)
STORE x4, 4 * REGBYTES(sp)
STORE x6, 6 * REGBYTES(sp)
STORE x7, 7 * REGBYTES(sp)
STORE x8, 8 * REGBYTES(sp)
STORE x9, 9 * REGBYTES(sp)
STORE x10, 10 * REGBYTES(sp)
STORE x11, 11 * REGBYTES(sp)
STORE x12, 12 * REGBYTES(sp)
STORE x13, 13 * REGBYTES(sp)
STORE x14, 14 * REGBYTES(sp)
STORE x15, 15 * REGBYTES(sp)
STORE x16, 16 * REGBYTES(sp)
STORE x17, 17 * REGBYTES(sp)
STORE x18, 18 * REGBYTES(sp)
STORE x19, 19 * REGBYTES(sp)
STORE x20, 20 * REGBYTES(sp)
STORE x21, 21 * REGBYTES(sp)
STORE x22, 22 * REGBYTES(sp)
STORE x23, 23 * REGBYTES(sp)
STORE x24, 24 * REGBYTES(sp)
STORE x25, 25 * REGBYTES(sp)
STORE x26, 26 * REGBYTES(sp)
STORE x27, 27 * REGBYTES(sp)
STORE x28, 28 * REGBYTES(sp)
STORE x29, 29 * REGBYTES(sp)
STORE x30, 30 * REGBYTES(sp)
STORE x31, 31 * REGBYTES(sp)
/* switch to interrupt stack */
csrrw sp,mscratch,sp
call rt_interrupt_enter
/* clear interrupt */
jal sw_clearpend
call rt_interrupt_leave
/* switch to from thread stack */
csrrw sp,mscratch,sp
/* if rt_thread_switch_interrupt_flag=1,then clear it */
la s0, rt_thread_switch_interrupt_flag
lw s2, 0(s0)
beqz s2, 1f
sw zero, 0(s0)
#1:
csrr a0, mepc
STORE a0, 0 * REGBYTES(sp)
la s0, rt_interrupt_from_thread
LOAD s1, 0(s0)
STORE sp, 0(s1)
la s0, rt_interrupt_to_thread
LOAD s1, 0(s0)
LOAD sp, 0(s1)
LOAD a0, 0 * REGBYTES(sp)
csrw mepc, a0
1: LOAD x1, 1 * REGBYTES(sp)
li t0,0x1800
csrs mstatus, t0
LOAD t0, 2*REGBYTES(sp)
csrs mstatus, t0
LOAD x4, 4 * REGBYTES(sp)
LOAD x5, 5 * REGBYTES(sp)
LOAD x6, 6 * REGBYTES(sp)
LOAD x7, 7 * REGBYTES(sp)
LOAD x8, 8 * REGBYTES(sp)
LOAD x9, 9 * REGBYTES(sp)
LOAD x10, 10 * REGBYTES(sp)
LOAD x11, 11 * REGBYTES(sp)
LOAD x12, 12 * REGBYTES(sp)
LOAD x13, 13 * REGBYTES(sp)
LOAD x14, 14 * REGBYTES(sp)
LOAD x15, 15 * REGBYTES(sp)
LOAD x16, 16 * REGBYTES(sp)
LOAD x17, 17 * REGBYTES(sp)
LOAD x18, 18 * REGBYTES(sp)
LOAD x19, 19 * REGBYTES(sp)
LOAD x20, 20 * REGBYTES(sp)
LOAD x21, 21 * REGBYTES(sp)
LOAD x22, 22 * REGBYTES(sp)
LOAD x23, 23 * REGBYTES(sp)
LOAD x24, 24 * REGBYTES(sp)
LOAD x25, 25 * REGBYTES(sp)
LOAD x26, 26 * REGBYTES(sp)
LOAD x27, 27 * REGBYTES(sp)
LOAD x28, 28 * REGBYTES(sp)
LOAD x29, 29 * REGBYTES(sp)
LOAD x30, 30 * REGBYTES(sp)
LOAD x31, 31 * REGBYTES(sp)
addi sp, sp, 32 * REGBYTES
/* load float reg */
#ifdef ARCH_RISCV_FPU
FLOAD f0, 0 * FREGBYTES(sp)
FLOAD f1, 1 * FREGBYTES(sp)
FLOAD f2, 2 * FREGBYTES(sp)
FLOAD f3, 3 * FREGBYTES(sp)
FLOAD f4, 4 * FREGBYTES(sp)
FLOAD f5, 5 * FREGBYTES(sp)
FLOAD f6, 6 * FREGBYTES(sp)
FLOAD f7, 7 * FREGBYTES(sp)
FLOAD f8, 8 * FREGBYTES(sp)
FLOAD f9, 9 * FREGBYTES(sp)
FLOAD f10, 10 * FREGBYTES(sp)
FLOAD f11, 11 * FREGBYTES(sp)
FLOAD f12, 12 * FREGBYTES(sp)
FLOAD f13, 13 * FREGBYTES(sp)
FLOAD f14, 14 * FREGBYTES(sp)
FLOAD f15, 15 * FREGBYTES(sp)
FLOAD f16, 16 * FREGBYTES(sp)
FLOAD f17, 17 * FREGBYTES(sp)
FLOAD f18, 18 * FREGBYTES(sp)
FLOAD f19, 19 * FREGBYTES(sp)
FLOAD f20, 20 * FREGBYTES(sp)
FLOAD f21, 21 * FREGBYTES(sp)
FLOAD f22, 22 * FREGBYTES(sp)
FLOAD f23, 23 * FREGBYTES(sp)
FLOAD f24, 24 * FREGBYTES(sp)
FLOAD f25, 25 * FREGBYTES(sp)
FLOAD f26, 26 * FREGBYTES(sp)
FLOAD f27, 27 * FREGBYTES(sp)
FLOAD f28, 28 * FREGBYTES(sp)
FLOAD f29, 29 * FREGBYTES(sp)
FLOAD f30, 30 * FREGBYTES(sp)
FLOAD f31, 31 * FREGBYTES(sp)
addi sp, sp, 32 * FREGBYTES
#endif
mret