blob: f47bc1d4fd7fa84dc7237967019bcfea98a85374 (
plain)
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
|
#include "uart.h"
#include "svc_interface.h"
void setup(void);
void reset_handler(void)
{
static _Bool setup_done;
if (!setup_done)
setup();
setup_done = 1;
// TODO do something here
while(1);
}
void undefined_instruction_vector(void)
{
uart_puts("Undefined instruction occured");
while( 1 )
{
/* Do Nothing! */
}
}
uint32_t supervisor_call_handler(enum svc_type request, uint32_t arg1,
uint32_t arg2, uint32_t arg3)
{
(void) arg2; (void) arg3; // unused for now
switch(request) {
case UART_PUTCHAR:
uart_putc(arg1);
break;
case UART_GETCHAR:
return uart_getc();
case UART_WRITE:
uart_puts("UART_WRITE not implemented!!!!!\n\r");
break;
default:
// perhaps we should kill the process now?
uart_puts("unknown supervisor call type!!!!!\n\r");
}
return 0; // a dummy value
}
void abort_handler(void)
{
uart_puts("re-entered system\n\r");
while(1);
}
void generic_handler(void)
{
uart_puts("something weird happened\n\r");
while(1);
}
void irq_handler(void)
{
uart_puts("irq happened\n\r");
while(1);
}
void fiq_handler(void)
{
uart_puts("fiq happened\n\r");
while(1);
}
|
