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shared_stack: fixed watchpoint placement on shared_stack

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This commit is contained in:
Felipe Neves 2020-02-06 16:24:39 -03:00
parent c5d05b5c4f
commit 33c9826372
2 changed files with 15 additions and 19 deletions
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5
components/xtensa/expression_with_stack_xtensa.c
View File

@ -19,7 +19,8 @@
StackType_t * esp_switch_stack_setup(StackType_t *stack, size_t stack_size)
{
#if CONFIG_FREERTOS_WATCHPOINT_END_OF_STACK
int watchpoint_place = (((int)stack + 31) & ~31);
esp_clear_watchpoint(0);
uint32_t watchpoint_place = ((uint32_t)stack + 32) & 0x1f ;
#endif
StackType_t *top_of_stack = (StackType_t *)&stack[0] +
((stack_size * sizeof(StackType_t)) / sizeof(StackType_t));
@ -35,7 +36,7 @@ StackType_t * esp_switch_stack_setup(StackType_t *stack, size_t stack_size)
frame->a1 = (UBaseType_t)top_of_stack;
#if CONFIG_FREERTOS_WATCHPOINT_END_OF_STACK
esp_set_watchpoint(2, (char*)watchpoint_place, 32, ESP_WATCHPOINT_STORE);
esp_set_watchpoint(0, (uint8_t *)watchpoint_place, 32, ESP_WATCHPOINT_STORE);
#endif
return top_of_stack;

29
components/xtensa/expression_with_stack_xtensa_asm.S
View File

@ -26,14 +26,14 @@
esp_switch_stack_enter:
#ifndef __XTENSA_CALL0_ABI__
entry sp, 0x10
mov a4, a1
s32i a4, a3, 0 /* on a3 there is a safe place to save the current stack */
l32i a4, a2, 0 /* obtains the user allocated stack buffer */
mov a1, a4 /* sp register now contains caller specified stack */
retw
entry sp, 0x10
mov a4, a1
s32i a4, a3, 0 /* on a3 there is a safe place to save the current stack */
l32i a4, a2, 0 /* obtains the user allocated stack buffer */
mov a1, a4 /* sp register now contains caller specified stack */
retw
#else
#error "this code is written for Window ABI"
#error "this code is written for Window ABI"
#endif
/**
@ -45,17 +45,12 @@ esp_switch_stack_enter:
esp_switch_stack_exit:
#ifndef __XTENSA_CALL0_ABI__
entry sp, 0x10
entry sp, 0x10
#if CONFIG_FREERTOS_WATCHPOINT_END_OF_STACK
movi a6, 2
movi a4, esp_clear_watchpoint
callx4 a4 /* clear the watchpoint before releasing stack */
#endif
l32i a4, a2, 0 /* recover the original task stack */
mov a1, a4 /* put it on sp register again */
retw
l32i a4, a2, 0 /* recover the original task stack */
mov a1, a4 /* put it on sp register again */
retw
#else
#error "this code is written for Window ABI"
#error "this code is written for Window ABI"
#endif