98 lines
2.9 KiB
C
98 lines
2.9 KiB
C
/*
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* This file is part of the libpayload project.
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*
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* Copyright 2014 Google Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <exception.h>
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#include <libpayload.h>
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#include <stdint.h>
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extern unsigned int test_exc;
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struct exception_handler_info
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{
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const char *name;
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};
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static exception_hook hook;
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struct exception_state *exception_state;
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static struct exception_handler_info exceptions[EXC_COUNT] = {
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[EXC_INV] = { "_invalid_exception" },
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[EXC_SYNC] = { "_sync" },
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[EXC_IRQ] = { "_irq" },
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[EXC_FIQ] = { "_fiq" },
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[EXC_SERROR] = {"_serror"}
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};
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static void print_regs(struct exception_state *state)
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{
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int i;
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printf("ELR = 0x%016llx ",state->elr);
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printf("ESR = 0x%08llx ",state->esr);
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for (i = 0; i < 31; i++) {
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printf("X%02d = 0x%016llx ", i, state->regs[i]);
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}
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}
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void exception_dispatch(struct exception_state *state, int idx);
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void exception_dispatch(struct exception_state *state, int idx)
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{
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exception_state = state;
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if (idx >= EXC_COUNT) {
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printf("Bad exception index %d.\n", idx);
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} else {
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struct exception_handler_info *info = &exceptions[idx];
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if (hook && hook(idx))
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return;
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if (info->name)
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printf("exception %s\n", info->name);
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else
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printf("exception _not_used.\n");
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}
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print_regs(state);
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if (test_exc)
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test_exc = 0;
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else
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halt();
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}
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void exception_init(void)
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{
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extern void* exception_table;
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set_vbar(exception_table);
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}
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void exception_install_hook(exception_hook h)
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{
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die_if(hook, "Implement support for a list of hooks if you need it.");
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hook = h;
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}
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