payloads/libpayload/include/arm/arch/exception.h

   1 /*
   2  *
   3  * Copyright 2013 Google Inc.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. The name of the author may not be used to endorse or promote products
  14  *    derived from this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #ifndef _ARCH_EXCEPTION_H
  30 #define _ARCH_EXCEPTION_H
  31
  32 #include <stdint.h>
  33
  34 void exception_dispatch(u32 idx);
  35 void set_vbar(uint32_t vbar);
  36
  37 struct exception_state
  38 {
  39         u32 regs[16];
  40         u32 cpsr;
  41 } __packed;
  42 extern struct exception_state exception_state;
  43
  44 extern u32 exception_stack[];
  45 extern u32 *exception_stack_end;
  46 extern struct exception_state *exception_state_ptr;
  47
  48 enum {
  49         EXC_UNDEF = 1,
  50         EXC_SWI = 2,
  51         EXC_PABORT = 3,
  52         EXC_DABORT = 4,
  53         EXC_IRQ = 6,
  54         EXC_FIQ = 7,
  55         EXC_COUNT
  56 };
  57
  58 #endif