122 lines
2.7 KiB
C
122 lines
2.7 KiB
C
/*
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* Copyright (c) 2012 Travis Geiselbrecht
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <debug.h>
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#include <compiler.h>
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#include <stdint.h>
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#include <arch/arm/cm3.h>
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static void dump_frame(const struct cm3_exception_frame *frame)
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{
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printf("exception frame at %p\n", frame);
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printf("\tr0 0x%08x r1 0x%08x r2 0x%08x r3 0x%08x r4 0x%08x\n",
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frame->r0, frame->r1, frame->r2, frame->r3, frame->r4);
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printf("\tr5 0x%08x r6 0x%08x r7 0x%08x r8 0x%08x r9 0x%08x\n",
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frame->r5, frame->r6, frame->r7, frame->r8, frame->r9);
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printf("\tr10 0x%08x r11 0x%08x r12 0x%08x\n",
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frame->r10, frame->r11, frame->r12);
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printf("\tlr 0x%08x pc 0x%08x psr 0x%08x\n",
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frame->lr, frame->pc, frame->psr);
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}
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static void hardfault(struct cm3_exception_frame *frame)
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{
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printf("hardfault: ");
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dump_frame(frame);
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printf("HFSR 0x%x\n", SCB->HFSR);
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halt();
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}
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static void usagefault(struct cm3_exception_frame *frame)
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{
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printf("usagefault: ");
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dump_frame(frame);
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halt();
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}
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static void busfault(struct cm3_exception_frame *frame)
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{
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printf("busfault: ");
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dump_frame(frame);
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halt();
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}
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/* raw exception vectors */
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void _nmi(void)
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{
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printf("nmi\n");
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halt();
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}
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__NAKED void _hardfault(void)
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{
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__asm__ volatile(
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"push {r4-r11};"
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"mov r0, sp;"
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"b %0;"
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:: "i" (hardfault)
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);
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__UNREACHABLE;
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}
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void _memmanage(void)
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{
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printf("memmanage\n");
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halt();
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}
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void _busfault(void)
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{
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__asm__ volatile(
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"push {r4-r11};"
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"mov r0, sp;"
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"b %0;"
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:: "i" (busfault)
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);
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__UNREACHABLE;
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}
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void _usagefault(void)
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{
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__asm__ volatile(
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"push {r4-r11};"
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"mov r0, sp;"
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"b %0;"
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:: "i" (usagefault)
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);
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__UNREACHABLE;
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}
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/* systick handler */
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void __WEAK _systick(void)
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{
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printf("systick\n");
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halt();
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}
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