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Diffstat (limited to 'sim/ppc/interrupts.h')
| -rw-r--r-- | sim/ppc/interrupts.h | 170 |
1 files changed, 0 insertions, 170 deletions
diff --git a/sim/ppc/interrupts.h b/sim/ppc/interrupts.h deleted file mode 100644 index 93447a8..0000000 --- a/sim/ppc/interrupts.h +++ /dev/null @@ -1,170 +0,0 @@ -/* 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; - - -INLINE_INTERRUPTS\ -(void) data_storage_interrupt -(cpu *processor, - unsigned_word cia, - unsigned_word ea, - storage_interrupt_reasons reason, - int is_store); - -INLINE_INTERRUPTS\ -(void) instruction_storage_interrupt -(cpu *processor, - unsigned_word cia, - storage_interrupt_reasons reason); - -INLINE_INTERRUPTS\ -(void) 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, - optional_instruction_program_interrupt, /* subset of illegal instruction */ - mpc860c0_instruction_program_interrupt, /* fwd br, taken but not predicted, near EO page */ - nr_program_interrupt_reasons -} program_interrupt_reasons; - -INLINE_INTERRUPTS\ -(void) program_interrupt -(cpu *processor, - unsigned_word cia, - program_interrupt_reasons reason); - -INLINE_INTERRUPTS\ -(void) floating_point_unavailable_interrupt -(cpu *processor, - unsigned_word cia); - -INLINE_INTERRUPTS\ -(void) system_call_interrupt -(cpu *processor, - unsigned_word cia); - -INLINE_INTERRUPTS\ -(void) floating_point_assist_interrupt -(cpu *processor, - unsigned_word cia); - -INLINE_INTERRUPTS\ -(void) machine_check_interrupt -(cpu *processor, - unsigned_word cia); - -/* Hardware generated interrupts: - - These asynchronous hardware generated interrupts may be called at - any time. It is the responsibility of this (the interrupts) module - to ensure that interrupts are delivered correctly (when possible). - The delivery of these interrupts is controlled by the MSR's - external interrupt enable bit. When ever the MSR's value is - changed, the processor must call the check_masked_interrupts() - function in case delivery has been made possible. - - decrementer_interrupt is `edge' sensitive. Multiple edges arriving - before the first edge has been delivered result in only one - interrupt. - - external_interrupt is `level' sensitive. An external interrupt - will only be delivered when the external interrupt port is - `asserted'. While interrupts are disabled, the external interrupt - can be asserted and then de-asserted without an interrupt - eventually being delivered. */ - -enum { - external_interrupt_pending = 1, - decrementer_interrupt_pending = 2, -}; - -typedef struct _interrupts { - event_entry_tag delivery_scheduled; - int pending_interrupts; -} interrupts; - -INLINE_INTERRUPTS\ -(void) check_masked_interrupts -(cpu *processor); - -INLINE_INTERRUPTS\ -(void) decrementer_interrupt -(cpu *processor); - -INLINE_INTERRUPTS\ -(void) external_interrupt -(cpu *processor, - int is_asserted); - -#endif /* _INTERRUPTS_H_ */ |