1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
/*
* Copyright (c) 2018, Synopsys, Inc.
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <rtthread.h>
#include "arc/arc_exception.h"
#if ARC_FEATURE_STACK_CHECK
#define ARC_INIT_STATUS ((1 << AUX_STATUS_BIT_SC) | AUX_STATUS_MASK_IE | ((-1 - INT_PRI_MIN) << 1) | STATUS32_RESET_VALUE)
#else
#define ARC_INIT_STATUS (AUX_STATUS_MASK_IE | ((-1 - INT_PRI_MIN) << 1) | STATUS32_RESET_VALUE)
#endif
extern void start_r(void);
rt_uint32_t context_switch_reqflg;
rt_uint32_t rt_interrupt_from_thread;
rt_uint32_t rt_interrupt_to_thread;
rt_uint32_t exc_nest_count;
struct init_stack_frame {
rt_uint32_t pc;
rt_uint32_t blink;
rt_uint32_t task;
rt_uint32_t status32;
rt_uint32_t r0;
};
/**
* shutdown CPU
*/
RT_WEAK void rt_hw_cpu_shutdown(void)
{
}
rt_uint8_t *rt_hw_stack_init(void *tentry,
void *parameter,
rt_uint8_t *stack_addr,
void *texit)
{
struct init_stack_frame *stack_frame;
rt_uint8_t *stk;
stk = stack_addr + sizeof(rt_uint32_t);
stk = (rt_uint8_t *)RT_ALIGN_DOWN((rt_uint32_t)stk, 8);
stk -= sizeof(struct init_stack_frame);
stack_frame = (struct init_stack_frame *)stk;
stack_frame->pc = (rt_uint32_t)start_r;
stack_frame->blink = (rt_uint32_t)texit;
stack_frame->task = (rt_uint32_t)tentry;
stack_frame->status32 = ARC_INIT_STATUS;
stack_frame->r0 = (rt_uint32_t)parameter;
return stk;
}
/**
* This function set the hook, which is invoked on fault exception handling.
*
* @param exception_handle the exception handling hook function.
*/
void rt_hw_exception_install(rt_err_t (*exception_handle)(void *context))
{
exception_handle = exception_handle;
}
void set_hw_stack_check(rt_uint32_t *from, rt_uint32_t *to)
{
struct rt_thread *rt_thread_to;
if (to != NULL) {
rt_thread_to = rt_container_of(to, struct rt_thread, sp);
#if ARC_FEATURE_SEC_PRESENT
arc_aux_write(AUX_S_KSTACK_TOP, (uint32_t)(rt_thread_to->stack_addr));
arc_aux_write(AUX_S_KSTACK_BASE, (uint32_t)(rt_thread_to->stack_addr)+rt_thread_to->stack_size);
#else
arc_aux_write(AUX_KSTACK_TOP, (uint32_t)(rt_thread_to->stack_addr));
arc_aux_write(AUX_KSTACK_BASE, (uint32_t)(rt_thread_to->stack_addr)+rt_thread_to->stack_size);
#endif
}
}
|
