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Merge pull request #5256 from jhbdream/thead-smart 

[fix][libcpu][riscv][t-head] fix rt_hw_interrupt_disable/rt_hw_interupt_enable bug
This commit is contained in:
Bernard Xiong 2021-11-04 17:18:54 +08:00 committed by GitHub
parent 6f44a9c870 7d07c61a47
commit 9e7d7ae525
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 22 additions and 33 deletions
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27
libcpu/risc-v/t-head/e9xx/context_gcc.S
View File

@ -45,12 +45,12 @@ rt_hw_context_switch_to:
/* save a0 to to_thread */
la t0, rt_interrupt_to_thread
STORE a0, (t0)
/* save 0 to from_thread */
la t0, rt_interrupt_from_thread
li t1, 0
STORE t1, (t0)
/* set rt_thread_switch_interrupt_flag=1 */
la t0, rt_thread_switch_interrupt_flag
li t1, 1
@ -97,7 +97,7 @@ rt_hw_context_switch_interrupt:
beq t1, t2, .reswitch
/* set rt_thread_switch_interrupt_flag=1 */
STORE t2, (t0)
/* update from_thread */
la t0, rt_interrupt_from_thread
STORE a0, (t0)
@ -137,7 +137,7 @@ PendSV_Handler:
la t0, rt_interrupt_from_thread
lw t1, (t0)
beqz t1, .switch_to_thead
/* restore from thread context t0,t1 */
lw t0, (-4)(sp)
lw t1, (-8)(sp)
@ -328,6 +328,23 @@ PendSV_Handler:
.pendsv_exit:
mret
/*
* rt_base_t rt_hw_interrupt_disable(void);
*/
.globl rt_hw_interrupt_disable
.type rt_hw_interrupt_disable, %function
rt_hw_interrupt_disable:
csrrci a0, mstatus, 8
ret
/*
* void rt_hw_interrupt_enable(rt_base_t level);
*/
.globl rt_hw_interrupt_enable
.type rt_hw_interrupt_enable, %function
rt_hw_interrupt_enable:
csrw mstatus, a0
ret

28
libcpu/risc-v/t-head/e9xx/cpuport.c
View File

@ -134,34 +134,6 @@ rt_uint8_t *rt_hw_stack_init(void *tentry,
return stk;
}
/**
* This function will disable global interrupt
*
* @param none
*
* @return zero
*/
rt_base_t rt_hw_interrupt_disable(void)
{
__asm volatile("csrrci a0, mstatus, 8");
return;
}
/**
* This function will ennable global interrupt
*
* @param level not used
*
* @return none
*/
/* XXX:rename rt_hw_interrupt_restore? */
void rt_hw_interrupt_enable(rt_base_t level)
{
__asm volatile("csrw mstatus, a0");
}
/** shutdown CPU */
RT_WEAK void rt_hw_cpu_shutdown()
{