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authorStan Shebs <shebs@codesourcery.com>1999-04-16 01:34:07 +0000
committerStan Shebs <shebs@codesourcery.com>1999-04-16 01:34:07 +0000
commit071ea11e85eb9d529cc5eb3d35f6247466a21b99 (patch)
tree5deda65b8d7b04d1f4cbc534c3206d328e1267ec /sim/ppc/interrupts.h
parent1730ec6b1848f0f32154277f788fb29f88d8475b (diff)
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Initial creation of sourceware repository
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-/* This file is part of the program psim.
-
- Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
- */
-
-
-#ifndef _INTERRUPTS_H_
-#define _INTERRUPTS_H_
-
-/* Interrupts:
-
- The code below handles two different types of interrupts.
- Synchronous and Asynchronous.
-
- Synchronous:
-
- Interrupts that must immediately force either an abort or restart
- of a current instruction are implemented by forcing an instruction
- restart. (or to put it another way, long jump). In looking at the
- code it may occure to you that, for some interrupts, they could
- return instead of restarting the cpu (eg system_call). While true
- (it once was like that) I've decided to make the behavour of all
- interrupt routines roughly identical.
-
- Because, a cpu's recorded state (ie what is in the cpu structure)
- is allowed to lag behind the cpu's true current state (eg PC not
- updated) sycnronous interrupt handers are parameterized with the
- the cpu being interrupted so that, as part of moddeling the
- interrupt, the cpu's state can be updated.
-
- Asynchronous:
-
- Interrupts such as reset or external exception are delivered using
- more normal (returning) functions. It is assumed that these
- functions are called out side of the normal processor execution
- cycle. */
-
-
-/* Software generated interrupts.
-
- The below are generated by software driven events. For instance,
- an invalid instruction or access (virtual or physical) to an
- invalid address */
-
-typedef enum {
- direct_store_storage_interrupt,
- hash_table_miss_storage_interrupt,
- protection_violation_storage_interrupt,
- earwax_violation_storage_interrupt,
- segment_table_miss_storage_interrupt,
- earwax_disabled_storage_interrupt,
- vea_storage_interrupt,
-} storage_interrupt_reasons;
-
-
-void INLINE_INTERRUPTS data_storage_interrupt
-(cpu *processor,
- unsigned_word cia,
- unsigned_word ea,
- storage_interrupt_reasons reason,
- int is_store);
-
-void INLINE_INTERRUPTS instruction_storage_interrupt
-(cpu *processor,
- unsigned_word cia,
- storage_interrupt_reasons reason);
-
-void INLINE_INTERRUPTS alignment_interrupt
-(cpu *processor,
- unsigned_word cia,
- unsigned_word ra);
-
-typedef enum {
- floating_point_enabled_program_interrupt,
- illegal_instruction_program_interrupt,
- privileged_instruction_program_interrupt,
- trap_program_interrupt,
- nr_program_interrupt_reasons
-} program_interrupt_reasons;
-
-void INLINE_INTERRUPTS program_interrupt
-(cpu *processor,
- unsigned_word cia,
- program_interrupt_reasons reason);
-
-void INLINE_INTERRUPTS floating_point_unavailable_interrupt
-(cpu *processor,
- unsigned_word cia);
-
-void INLINE_INTERRUPTS system_call_interrupt
-(cpu *processor,
- unsigned_word cia);
-
-void INLINE_INTERRUPTS trace_interrupt
-(cpu *processor,
- unsigned_word cia);
-
-void INLINE_INTERRUPTS floating_point_assist_interrupt
-(cpu *processor,
- unsigned_word cia);
-
-void INLINE_INTERRUPTS machine_check_interrupt
-(cpu *processor,
- unsigned_word cia);
-
-/* Bit of a funny one. One of the trap instructions has been marked
- as the breakpoint instruction. This special case calls this
- interrupt routine */
-
-void INLINE_INTERRUPTS breakpoint_interrupt
-(cpu *processor,
- unsigned_word cia);
-
-/* Hardware generated interrupts
-
- These hardware generated interrupt routines are called outside of
- the instruction execution cycle and so return normally.
-
- More importantly, they assume that the current instruction address
- held within the processor is correct.
-
- Return a non zero value if the interrupt was not successfully
- delivered */
-
-int INLINE_INTERRUPTS decrementer_interrupt
-(cpu *processor);
-
-int INLINE_INTERRUPTS hard_system_reset
-(cpu *processor);
-
-int INLINE_INTERRUPTS soft_system_reset
-(cpu *processor);
-
-int INLINE_INTERRUPTS external_interrupt
-(cpu *processor);
-
-#endif /* _INTERRUPTS_H_ */