From 4b2a6aed8413d6e7d7b25d918896ae637266d9d5 Mon Sep 17 00:00:00 2001 From: Andrew Cagney Date: Mon, 1 Sep 1997 03:26:31 +0000 Subject: Use sim_state_alloc to create common sim object. --- sim/common/ChangeLog | 10 ++++++++++ sim/common/sim-base.h | 19 ++++++++++--------- sim/common/sim-utils.c | 15 +++++++++++---- 3 files changed, 31 insertions(+), 13 deletions(-) (limited to 'sim/common') diff --git a/sim/common/ChangeLog b/sim/common/ChangeLog index db34e86..237905d 100644 --- a/sim/common/ChangeLog +++ b/sim/common/ChangeLog @@ -1,3 +1,13 @@ +Mon Sep 1 10:50:11 1997 Andrew Cagney + + * sim-utils.c (sim_state_alloc): Set CPU backlinks, callback and + kind. + + * sim-base.h (sim_state_alloc): Add callback and kind arguments. + + * sim-base.h (INVALID_INSTRUCTION_ADDRESS): Add default + definition. + Sat Aug 30 09:47:21 1997 Andrew Cagney * sim-fpu.c (DP_GARDMSB, ...): Make unsigned. diff --git a/sim/common/sim-base.h b/sim/common/sim-base.h index b21c397..12e1a25 100644 --- a/sim/common/sim-base.h +++ b/sim/common/sim-base.h @@ -21,25 +21,23 @@ with this program; if not, write to the Free Software Foundation, Inc., /* Simulator state pseudo baseclass. - Each simulator is required to have a sim-main.h file that includes - sim-basics.h, defines the base type sim_cia (the data type that - contains the complete current instruction address information), and - then sim-base.h: + Each simulator is required to have the file ``sim-main.h''. That + file includes ``sim-basics.h'', defines the base type ``sim_cia'' + (the data type that contains complete current instruction address + information), include ``sim-base.h'': #include "sim-basics.h" typedef address_word sim_cia; #include "sim-base.h" - and defines two key simulator structures. Firstly, struct - _sim_cpu: + finally, two data types ``struct _sim_cpu' and ``struct sim_state' + are defined: struct _sim_cpu { ... simulator specific members ... sim_cpu_base base; }; - and secondly, struct sim_state (which uses the sim_cpu structure): - struct sim_state { sim_cpu cpu[MAX_NR_PROCESSORS]; #if (WITH_SMP) @@ -64,6 +62,9 @@ with this program; if not, write to the Free Software Foundation, Inc., #ifndef NULL_CIA #define NULL_CIA ((sim_cia) 0) #endif +#ifndef INVALID_INSTRUCTION_ADDRESS +#define INVALID_INSTRUCTION_ADDRESS ((address_word)0 - 1) +#endif typedef struct _sim_cpu sim_cpu; #include "sim-module.h" @@ -258,7 +259,7 @@ typedef struct { /* Functions for allocating/freeing a sim_state. */ -SIM_DESC sim_state_alloc PARAMS ((void)); +SIM_DESC sim_state_alloc PARAMS ((SIM_OPEN_KIND kind, host_callback *callback)); void sim_state_free PARAMS ((SIM_DESC)); diff --git a/sim/common/sim-utils.c b/sim/common/sim-utils.c index 9bcfffc..c72a1ab 100644 --- a/sim/common/sim-utils.c +++ b/sim/common/sim-utils.c @@ -53,7 +53,8 @@ with this program; if not, write to the Free Software Foundation, Inc., Set by sim_resume. */ struct sim_state *current_state; -/* Allocate zero filled memory with xmalloc. */ +/* Allocate zero filled memory with xmalloc - xmalloc aborts of the + allocation fails. */ void * zalloc (unsigned long size) @@ -72,10 +73,16 @@ zfree (void *data) /* Allocate a sim_state struct. */ SIM_DESC -sim_state_alloc (void) +sim_state_alloc (SIM_OPEN_KIND kind, + host_callback *callback) { - SIM_DESC sd = zalloc (sizeof (struct sim_state)); - sd->base.magic = SIM_MAGIC_NUMBER; + int cpu_nr; + SIM_DESC sd = ZALLOC (struct sim_state); + STATE_MAGIC (sd) = SIM_MAGIC_NUMBER; + STATE_CALLBACK (sd) = callback; + STATE_OPEN_KIND (sd) = kind; + for (cpu_nr = 0; cpu_nr < MAX_NR_PROCESSORS; cpu_nr++) + CPU_STATE (STATE_CPU (sd, cpu_nr)) = sd; return sd; } -- cgit v1.1