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/*
* Copyright (c) 2006 Martin Decky
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/** @addtogroup ppc32
* @{
*/
/** @file
*/
#ifndef KERN_ppc32_EXCEPTION_H_
#define KERN_ppc32_EXCEPTION_H_
#include <arch/types.h>
#include <arch/regutils.h>
typedef struct {
uint32_t r0;
uint32_t r2;
uint32_t r3;
uint32_t r4;
uint32_t r5;
uint32_t r6;
uint32_t r7;
uint32_t r8;
uint32_t r9;
uint32_t r10;
uint32_t r11;
uint32_t r13;
uint32_t r14;
uint32_t r15;
uint32_t r16;
uint32_t r17;
uint32_t r18;
uint32_t r19;
uint32_t r20;
uint32_t r21;
uint32_t r22;
uint32_t r23;
uint32_t r24;
uint32_t r25;
uint32_t r26;
uint32_t r27;
uint32_t r28;
uint32_t r29;
uint32_t r30;
uint32_t r31;
uint32_t cr;
uint32_t pc;
uint32_t srr1;
uint32_t lr;
uint32_t ctr;
uint32_t xer;
uint32_t r12;
uint32_t sp;
} istate_t;
static inline void istate_set_retaddr(istate_t *istate, uintptr_t retaddr)
{
istate->pc = retaddr;
}
/** Return true if exception happened while in userspace */
static inline int istate_from_uspace(istate_t *istate)
{
/* true if privilege level PR (copied from MSR) == 1 */
return (istate->srr1 & MSR_PR) != 0;
}
static inline unative_t istate_get_pc(istate_t *istate)
{
return istate->pc;
}
#endif
/** @}
*/