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/* Copyright 2013-2014 IBM Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <skiboot.h>
#include <stack.h>
#include <opal.h>
#include <processor.h>
#include <cpu.h>
#define REG "%016llx"
#define REG32 "%08x"
#define REGS_PER_LINE 4
static void dump_regs(struct stack_frame *stack)
{
unsigned int i;
prerror("CFAR : "REG"\n", stack->cfar);
prerror("SRR0 : "REG" SRR1 : "REG"\n", stack->srr0, stack->srr1);
prerror("HSRR0: "REG" HSRR1: "REG"\n", stack->hsrr0, stack->hsrr1);
prerror("DSISR: "REG32" DAR : "REG"\n", stack->dsisr, stack->dar);
prerror("LR : "REG" CTR : "REG"\n", stack->lr, stack->ctr);
prerror("CR : "REG32" XER : "REG32"\n", stack->cr, stack->xer);
for (i = 0; i < 16; i++)
prerror("GPR%02d: "REG" GPR%02d: "REG"\n",
i, stack->gpr[i], i + 16, stack->gpr[i + 16]);
}
/* Called from head.S, thus no prototype */
void exception_entry(struct stack_frame *stack) __noreturn;
void exception_entry(struct stack_frame *stack)
{
const size_t max = 320;
char buf[max];
size_t l;
prerror("***********************************************\n");
if (stack->type == 0x200) {
l = 0;
l += snprintf(buf + l, max - l, "Fatal MCE at "REG" ", stack->srr0);
l += snprintf_symbol(buf + l, max - l, stack->srr0);
prerror("%s\n", buf);
} else {
uint64_t nip;
switch (stack->type) {
case 0x500:
case 0x980:
case 0xe00:
case 0xe20:
case 0xe40:
case 0xe60:
case 0xe80:
case 0xea0:
case 0xf80:
nip = stack->hsrr0;
break;
default:
nip = stack->srr0;
break;
}
l = 0;
l += snprintf(buf + l, max - l, "Fatal Exception 0x%llx at "REG" ", stack->type, nip);
l += snprintf_symbol(buf + l, max - l, nip);
prerror("%s\n", buf);
}
dump_regs(stack);
abort();
}
static int64_t opal_register_exc_handler(uint64_t opal_exception __unused,
uint64_t handler_address __unused,
uint64_t glue_cache_line __unused)
{
/* This interface is deprecated */
return OPAL_UNSUPPORTED;
}
opal_call(OPAL_REGISTER_OPAL_EXCEPTION_HANDLER, opal_register_exc_handler, 3);
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