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fix mips stackframe and exception

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This commit is contained in:
bigmagic
2020-08-26 12:03:01 +08:00
parent cf622e5177
commit bd95f3a94f
4 changed files with 24 additions and 11 deletions
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21
libcpu/mips/common/context_gcc.S
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@@ -1,11 +1,12 @@
/*
* Copyright (c) 2006-2019, RT-Thread Development Team
* Copyright (c) 2006-2020, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2019-12-04 Jiaxun Yang Initial version
* 2020-07-26 lizhirui Fixed some problems
*/
#ifndef __ASSEMBLY__
@@ -56,12 +57,12 @@ rt_hw_context_switch_interrupt:
bnez t1, _reswitch
nop
li t1, 0x01 /* set rt_thread_switch_interrupt_flag to 1 */
sw t1, 0(t0)
LONG_S t1, 0(t0)
PTR_LA t0, rt_interrupt_from_thread /* set rt_interrupt_from_thread */
sw a0, 0(t0)
LONG_S a0, 0(t0)
_reswitch:
PTR_LA t0, rt_interrupt_to_thread /* set rt_interrupt_to_thread */
sw a1, 0(t0)
LONG_S a1, 0(t0)
jr ra
nop
@@ -97,24 +98,24 @@ mips_irq_handle:
* rt_hw_context_switch_interrupt_do and do not return
*/
PTR_LA k0, rt_thread_switch_interrupt_flag
lw k1, 0(k0)
LONG_L k1, 0(k0)
beqz k1, spurious_interrupt
nop
sw zero, 0(k0) /* clear flag */
LONG_S zero, 0(k0) /* clear flag */
nop
/*
* switch to the new thread
*/
PTR_LA k0, rt_interrupt_from_thread
lw k1, 0(k0)
LONG_L k1, 0(k0)
nop
sw sp, 0(k1) /* store sp in preempted task TCB */
LONG_S sp, 0(k1) /* store sp in preempted task TCB */
PTR_LA k0, rt_interrupt_to_thread
lw k1, 0(k0)
LONG_L k1, 0(k0)
nop
lw sp, 0(k1) /* get new task stack pointer */
LONG_L sp, 0(k1) /* get new task stack pointer */
j spurious_interrupt
nop