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Working on the plugins

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git-svn-id: svn://svn.cc65.org/cc65/trunk@1223 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz 2002-04-07 20:39:35 +00:00
parent 58b5779f35
commit 77308fe20f
6 changed files with 196 additions and 68 deletions
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9
src/sim65/chip.c
View File

@ -57,6 +57,15 @@
/* Sorted list of all chip data structures */
static Collection Chips = STATIC_COLLECTION_INITIALIZER;
/* SimData instance */
static const SimData Sim65Data = {
1, /* MajorVersion */
1, /* MinorVersion */
xmalloc, /* void* (*Malloc) (size_t Size); */
Warning, /* void (*Warning) (const char* Format, ...); */
Error /* void (*Error) (const char* Format, ...); */
};
/*****************************************************************************/

3
src/sim65/chipdata.h
View File

@ -59,7 +59,8 @@ struct ChipData {
unsigned MinorVersion;
/* -- Exported functions -- */
void* (*Init) (const struct SimData* Data, unsigned Addr, unsigned Range);
int (*InitChip) (const struct SimData* Data);
void* (*InitInstance) (unsigned Addr, unsigned Range);
void (*WriteCtrl) (void* Data, unsigned Addr, unsigned char Val);
void (*Write) (void* Data, unsigned Addr, unsigned char Val);
unsigned char (*ReadCtrl) (void* Data, unsigned Addr);

177
src/sim65/chips/ram.c
View File

@ -33,29 +33,198 @@
#include <stdlib.h>
#include <string.h>
/* sim65 */
#include "chipif.h"
/*****************************************************************************/
/* Forwards */
/*****************************************************************************/
int InitChip (const struct SimData* Data);
/* Initialize the chip, return an error code */
static void* InitInstance (unsigned Addr, unsigned Range);
/* Initialize a new chip instance */
static void WriteCtrl (void* Data, unsigned Addr, unsigned char Val);
/* Write control data */
static void Write (void* Data, unsigned Addr, unsigned char Val);
/* Write user data */
static unsigned char ReadCtrl (void* Data, unsigned Addr);
/* Read control data */
static unsigned char Read (void* Data, unsigned Addr);
/* Read user data */
/*****************************************************************************/
/* Data */
/*****************************************************************************/
/* Control data passed to the main program */
static const struct ChipData RAMData[1] = {
{
"RAM", /* Name of the chip */
CHIPDATA_VER_MAJOR, /* Version information */
CHIPDATA_VER_MINOR,
/* -- Exported functions -- */
InitChip,
InitInstance,
WriteCtrl,
Write,
ReadCtrl,
Read
}
};
/* The SimData pointer we get when InitChip is called */
static const SimData* Sim;
/* Possible RAM attributes */
#define ATTR_INITIALIZED 0x01 /* RAM cell is intialized */
#define ATTR_WPROT 0x02 /* RAM cell is write protected */
/* Data for one RAM instance */
typedef struct InstanceData InstanceData;
struct InstanceData {
unsigned BaseAddr; /* Base address */
unsigned Range; /* Memory range */
unsigned char* MemAttr; /* Memory attributes */
unsigned char* Mem; /* The memory itself */
};
/*****************************************************************************/
/* Code */
/* Exported function */
/*****************************************************************************/
int GetChipData (const ChipData** Data, unsigned* Count)
{
*Data = 0;
*Count = 0;
return 1;
/* Pass the control structure to the caller */
*Data = RAMData;
*Count = sizeof (Data) / sizeof (Data[0]);
/* Call was successful */
return 0;
}
/*****************************************************************************/
/* Code */
/*****************************************************************************/
int InitChip (const struct SimData* Data)
/* Initialize the chip, return an error code */
{
/* Remember the pointer */
Sim = Data;
/* Always successful */
return 0;
}
static void* InitInstance (unsigned Addr, unsigned Range)
/* Initialize a new chip instance */
{
/* Allocate a new instance structure */
InstanceData* D = Sim->Malloc (sizeof (InstanceData));
/* Initialize the structure, allocate RAM and attribute memory */
D->BaseAddr = Addr;
D->Range = Range;
D->MemAttr = Sim->Malloc (Range * sizeof (D->MemAttr[0]));
D->Mem = Sim->Malloc (Range * sizeof (D->Mem[0]));
/* Clear the RAM and attribute memory */
memset (D->MemAttr, 0, Range * sizeof (D->MemAttr[0]));
memset (D->Mem, 0, Range * sizeof (D->Mem[0]));
/* Done, return the instance data */
return D;
}
static void WriteCtrl (void* Data, unsigned Addr, unsigned char Val)
/* Write control data */
{
/* Cast the data pointer */
InstanceData* D = (InstanceData*) Data;
/* Do the write and remember the cell as initialized */
D->Mem[Addr] = Val;
D->MemAttr[Addr] |= ATTR_INITIALIZED;
}
static void Write (void* Data, unsigned Addr, unsigned char Val)
/* Write user data */
{
/* Cast the data pointer */
InstanceData* D = (InstanceData*) Data;
/* Check for a write to a write protected cell */
if (D->MemAttr[Addr] & ATTR_WPROT) {
Sim->Warning ("Writing to write protected memory at $%04X", Addr);
}
/* Do the write and remember the cell as initialized */
D->Mem[Addr] = Val;
D->MemAttr[Addr] |= ATTR_INITIALIZED;
}
static unsigned char ReadCtrl (void* Data, unsigned Addr)
/* Read control data */
{
/* Cast the data pointer */
InstanceData* D = (InstanceData*) Data;
/* Read the cell and return the value */
return D->Mem[Addr];
}
static unsigned char Read (void* Data, unsigned Addr)
/* Read user data */
{
/* Cast the data pointer */
InstanceData* D = (InstanceData*) Data;
/* Check for a read from an uninitialized cell */
if ((D->MemAttr[Addr] & ATTR_INITIALIZED) == 0) {
/* We're reading a memory cell that was never written to */
Sim->Warning ("Reading from uninitialized memory at $%04X", Addr);
}
/* Read the cell and return the value */
return D->Mem[Addr];
}

5
src/sim65/make/gcc.mak
View File

@ -18,8 +18,7 @@ OBJS = chip.o \
error.o \
global.o \
main.o \
memory.o \
simdata.o
memory.o
LIBS = $(COMMON)/common.a
@ -45,9 +44,11 @@ chips:
clean:
@$(MAKE) -C chips -f make/gcc.mak clean
rm -f *~ core *.lst
zap: clean
@$(MAKE) -C chips -f make/gcc.mak zap
rm -f *.o $(EXECS) .depend
# ------------------------------------------------------------------------------

54
src/sim65/simdata.c
View File

@ -1,54 +0,0 @@
/*****************************************************************************/
/* */
/* simdata.c */
/* */
/* Simulator data passed to the chip plugins */
/* */
/* */
/* */
/* (C) 2002 Ullrich von Bassewitz */
/* Wacholderweg 14 */
/* D-70597 Stuttgart */
/* EMail: uz@musoftware.de */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
/* sim65 */
#include "simdata.h"
/*****************************************************************************/
/* Data */
/*****************************************************************************/
/* SimData instance */
const SimData Sim65Data = {
1, /* MajorVersion */
1 /* MinorVersion */
};

8
src/sim65/simdata.h
View File

@ -49,10 +49,12 @@ typedef struct SimData SimData;
struct SimData {
unsigned MajorVersion;
unsigned MinorVersion;
};
/* SimData instance */
extern const SimData Sim65Data;
/* -- Callback functions -- */
void* (*Malloc) (size_t Size);
void (*Warning) (const char* Format, ...);
void (*Error) (const char* Format, ...);
};