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/*
cf_arch_interface.c - interface between simulation of coldfire to common utility
Copyright (C) 2007 Skyeye Develop Group
for help please send mail to <skyeye-developer@lists.sf.linuxforum.net>
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
*/
/*
* 12/16/2006 Michael.Kang <blackfin.kang@gmail.com>
*/
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#ifdef HAVE_LIBREADLINE
#include <readline/readline.h>
#endif
#include "coldfire.h"
#include "skyeye_config.h"
char Run_Exit = 0;
SKYEYE_DBGR_DEFAULT_CHANNEL(run);
static int stop_now = 0;
void coldfire_init_state(){
static int done = 0;
if(!done){
done = 1;
Memory_Init();
Instruction_Init();
instruction_register_instructions();
memory_module_setup_segment("ram",0,0x0,32*1024*1024);
/* SRAM for 5272 */
memory_module_setup_segment("ram",0, 0x20000000, 4096);
/* set supervisor mode */
SRBits->S = 1;
memory_core.mbar = 0x10000000;
memory_core.mbar2 = 0x80000000;
memory_core.mbar_size = 0x1024;
memory_core.mbar2_size = 0x1024;
/*mach init */
skyeye_config.mach->mach_init (&memory_core, skyeye_config.mach);
}
}
void coldfire_reset_state(){
}
extern void mcf5249_io_do_cycle();
/* Execute a single instruction. */
void
coldfire_step_once ()
{
unsigned int Instr;
struct _Instruction *InstructionPtr;
#ifdef INSTRUCTION_PROFILE
unsigned long long LowTime=0, HighTime=0;
char Buffer[16];
#endif
//while(!Run_Exit) {
if(1){
SKYEYE_DBG("New cycle, PC=0x%08lx, SP=0x%08lx\n",
memory_core.pc, memory_core.a[7]);
/* printf("New cycle, PC=0x%08lx, SP=0x%08lx\n",
memory_core.pc, memory_core.a[7]);
*/
/* Check for any pending exceptions */
exception_check_and_handle();
/* As we're coming back from an interrupt, check for exit */
//if(Run_Exit) break;
/* Save the PC for the beginning of this instruction
* This is useful for exceptions that reset the PC */
memory_core.pc_instruction_begin = memory_core.pc;
/* Before we execute this instruction, catch a bad PC counter */
/* Get the instruction from memory */
if(!Memory_RetrWord(&Instr, memory_core.pc))
//continue;
;
/* Look it up */
InstructionPtr = Instruction_FindInstruction(Instr);
if(InstructionPtr==NULL) {
//exception_do_exception(4);
//continue;
} else {
/* Run the instruction */
(*InstructionPtr->FunctionPtr)();
}
/* Now update anything that could cause an interrupt, so we
* can catch it in the next cycle */
/* Call this, which will call an update
* for things like the UARTs and Timers */
skyeye_config.mach->mach_io_do_cycle (&memory_core);
}
}
static void coldfire_set_pc(WORD addr){
memory_core.pc = addr;
}
static WORD coldfire_get_pc(){
return (WORD)memory_core.pc;
}
//chy 2006-04-14 maybe changed in the future !!!???
static int
coldfire_ICE_write_byte (WORD addr, uint8_t v)
{
Memory_StorByte(addr,v);
return 0;
}
static int
coldfire_ICE_read_byte(WORD addr, uint8_t *pv){
unsigned int v;
int res;
res = Memory_RetrByte(&v, addr);
if (res == 1){ //success
*pv=(unsigned char)v;
return 0; //fault=0
}else{
return 1;//fault=1
}
}
static int
coldfire_parse_cpu (cpu_config_t * cpu, const char *param[])
{
}
extern void mcf5249_mach_init(void * state, machine_config_t * mach);
extern void mcf5272_mach_init(void * state, machine_config_t * mach);
static machine_config_t coldfire_machines[] = {
{"mcf5249", mcf5249_mach_init, NULL, NULL, NULL},
{"mcf5272", mcf5272_mach_init, NULL, NULL, NULL},
};
static int
coldfire_parse_mach (machine_config_t * cpu, const char *params[])
{
int i;
for (i = 0; i < (sizeof (coldfire_machines) / sizeof (machine_config_t));
i++) {
if (!strncmp
(params[0], coldfire_machines[i].machine_name,
MAX_PARAM_NAME)) {
skyeye_config.mach = &coldfire_machines[i];
SKYEYE_INFO
("mach info: name %s, mach_init addr %p\n",
skyeye_config.mach->machine_name,
skyeye_config.mach->mach_init);
return 0;
}
}
SKYEYE_ERR ("Error: Unkonw mach name \"%s\"\n", params[0]);
return -1;
}
static int coldfire_parse_mem(int num_params, const char *params[]){
//memory_module_setup_segment("ram",0,0x0,0x400000);
}
void init_coldfire_arch(){
static arch_config_t coldfire_arch;
coldfire_arch.arch_name = "coldfire";
//coldfire_arch.pc = 0;
coldfire_arch.init = coldfire_init_state;
coldfire_arch.reset = coldfire_reset_state;
coldfire_arch.set_pc = coldfire_set_pc;
coldfire_arch.get_pc = coldfire_get_pc;
coldfire_arch.step_once = coldfire_step_once;
coldfire_arch.ICE_write_byte = coldfire_ICE_write_byte;
coldfire_arch.ICE_read_byte = coldfire_ICE_read_byte;
coldfire_arch.parse_cpu = coldfire_parse_cpu;
coldfire_arch.parse_mach = coldfire_parse_mach;
coldfire_arch.parse_mem = NULL;
register_arch (&coldfire_arch);
}
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