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/*
* Copyright (c) 2012-2013 Travis Geiselbrecht
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <debug.h>
#include <compiler.h>
#include <stdint.h>
#include <kernel/thread.h>
#include <arch/arm/cm.h>
static void dump_frame(const struct arm_cm_exception_frame *frame)
{
printf("exception frame at %p\n", frame);
printf("\tr0 0x%08x r1 0x%08x r2 0x%08x r3 0x%08x r4 0x%08x\n",
frame->r0, frame->r1, frame->r2, frame->r3, frame->r4);
printf("\tr5 0x%08x r6 0x%08x r7 0x%08x r8 0x%08x r9 0x%08x\n",
frame->r5, frame->r6, frame->r7, frame->r8, frame->r9);
printf("\tr10 0x%08x r11 0x%08x r12 0x%08x\n",
frame->r10, frame->r11, frame->r12);
printf("\tlr 0x%08x pc 0x%08x psr 0x%08x\n",
frame->lr, frame->pc, frame->psr);
}
static void hardfault(struct arm_cm_exception_frame *frame)
{
inc_critical_section();
printf("hardfault: ");
dump_frame(frame);
printf("HFSR 0x%x\n", SCB->HFSR);
halt();
}
static void usagefault(struct arm_cm_exception_frame *frame)
{
inc_critical_section();
printf("usagefault: ");
dump_frame(frame);
halt();
}
static void busfault(struct arm_cm_exception_frame *frame)
{
inc_critical_section();
printf("busfault: ");
dump_frame(frame);
halt();
}
/* raw exception vectors */
void _nmi(void)
{
inc_critical_section();
printf("nmi\n");
halt();
}
__NAKED void _hardfault(void)
{
__asm__ volatile(
"push {r4-r11};"
"mov r0, sp;"
"b %0;"
:: "i" (hardfault)
);
__UNREACHABLE;
}
void _memmanage(void)
{
inc_critical_section();
printf("memmanage\n");
halt();
}
void _busfault(void)
{
__asm__ volatile(
"push {r4-r11};"
"mov r0, sp;"
"b %0;"
:: "i" (busfault)
);
__UNREACHABLE;
}
void _usagefault(void)
{
__asm__ volatile(
"push {r4-r11};"
"mov r0, sp;"
"b %0;"
:: "i" (usagefault)
);
__UNREACHABLE;
}
/* systick handler */
void __WEAK _systick(void)
{
inc_critical_section();
printf("systick\n");
halt();
}
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