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Subversion Repositories eco32

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  • This comparison shows the changes necessary to convert path 
    /eco32/tags/eco32-0.23/simtest/disk
    from Rev 24 to Rev 157
    ↔ Reverse comparison
  •

Rev 24 → Rev 157

/mkdisk/Makefile
0,0 → 1,36
#
# Makefile for disk creator
#
 
BUILD = ../../../build
 
CC = gcc -m32
CFLAGS = -g -Wall
LDFLAGS = -g
LDLIBS = -lm
 
SRCS = mkdisk.c
OBJS = $(patsubst %.c,%.o,$(SRCS))
BIN = mkdisk
 
.PHONY: all install clean
 
all: $(BIN)
 
install: $(BIN)
mkdir -p $(BUILD)/simtest
cp $(BIN) $(BUILD)/simtest
 
$(BIN): $(OBJS)
$(CC) $(LDFLAGS) -o $(BIN) $(OBJS) $(LDLIBS)
 
%.o: %.c
$(CC) $(CFLAGS) -o $@ -c $<
 
depend.mak:
$(CC) -MM -MG $(CFLAGS) $(SRCS) >depend.mak
 
-include depend.mak
 
clean:
rm -f *~ $(OBJS) $(BIN) depend.mak
/mkdisk/mkdisk.c
0,0 → 1,75
/*
* mkdisk.c -- make an empty physical disk
*/
 
 
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
 
 
#define SECTOR_SIZE 512
#define MIN_NUMBER_SECTORS 100
#define SECTORS_PER_MB ((1 << 20) / SECTOR_SIZE)
#define DATA_BYTE 0xE5
 
 
void error(char *fmt, ...) {
va_list ap;
 
va_start(ap, fmt);
fprintf(stderr, "Error: ");
vfprintf(stderr, fmt, ap);
fprintf(stderr, "\n");
va_end(ap);
exit(1);
}
 
 
void usage(void) {
fprintf(stderr, "Usage: mkdisk <file name> <n>[M]\n");
fprintf(stderr, " <n>: decimal number of sectors\n");
fprintf(stderr, " if 'M' appended: megabytes instead of sectors\n");
fprintf(stderr, " (sector size is always %d bytes)\n", SECTOR_SIZE);
exit(1);
}
 
 
int main(int argc, char *argv[]) {
FILE *dskFile;
int numSectors;
unsigned char sectorBuffer[SECTOR_SIZE];
int i;
 
if (argc != 3) {
usage();
}
numSectors = atoi(argv[2]);
i = strlen(argv[2]) - 1;
if (argv[2][i] == 'M') {
numSectors *= SECTORS_PER_MB;
}
if (numSectors < MIN_NUMBER_SECTORS) {
error("this disk is too small to be useful (minimum size is %d sectors)",
MIN_NUMBER_SECTORS);
}
dskFile = fopen(argv[1], "wb");
if (dskFile == NULL) {
error("cannot open file '%s' for write", argv[1]);
}
fprintf(stdout,
"Creating disk '%s' with %d sectors (around %d MB)...\n",
argv[1], numSectors,
(numSectors + SECTORS_PER_MB / 2) / SECTORS_PER_MB);
for (i = 0; i < SECTOR_SIZE; i++) {
sectorBuffer[i] = DATA_BYTE;
}
for (i = 0; i < numSectors; i++) {
if (fwrite(sectorBuffer, SECTOR_SIZE, 1, dskFile) != 1) {
error("write error on file '%s', sector %d", argv[1], i);
}
}
fclose(dskFile);
return 0;
}
/wrtmbr/Makefile
0,0 → 1,36
#
# Makefile for a program which writes the master boot record to the disk
#
 
BUILD = ../../../build
 
CC = gcc -m32
CFLAGS = -g -Wall
LDFLAGS = -g
LDLIBS = -lm
 
SRCS = wrtmbr.c
OBJS = $(patsubst %.c,%.o,$(SRCS))
BIN = wrtmbr
 
.PHONY: all install clean
 
all: $(BIN)
 
install: $(BIN)
mkdir -p $(BUILD)/simtest
cp $(BIN) $(BUILD)/simtest
 
$(BIN): $(OBJS)
$(CC) $(LDFLAGS) -o $(BIN) $(OBJS) $(LDLIBS)
 
%.o: %.c
$(CC) $(CFLAGS) -o $@ -c $<
 
depend.mak:
$(CC) -MM -MG $(CFLAGS) $(SRCS) >depend.mak
 
-include depend.mak
 
clean:
rm -f *~ $(OBJS) $(BIN) depend.mak
/wrtmbr/wrtmbr.c
0,0 → 1,76
/*
* wrtmbr.c -- write the master boot record to the disk
*/
 
 
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
 
 
#define SECTOR_SIZE 512
 
 
void error(char *fmt, ...) {
va_list ap;
 
va_start(ap, fmt);
fprintf(stderr, "Error: ");
vfprintf(stderr, fmt, ap);
fprintf(stderr, "\n");
va_end(ap);
exit(1);
}
 
 
void usage(char *myself) {
fprintf(stderr,
"Usage: %s <disk file> <master boot record file>\n",
myself);
exit(1);
}
 
 
int main(int argc, char *argv[]) {
FILE *diskFile;
FILE *bootFile;
unsigned char sectorBuffer[SECTOR_SIZE];
 
if (argc != 3) {
usage(argv[0]);
}
diskFile = fopen(argv[1], "r+b");
if (diskFile == NULL) {
error("cannot open disk file '%s'", argv[1]);
}
bootFile = fopen(argv[2], "rb");
if (bootFile == NULL) {
error("cannot open boot sector file '%s'", argv[2]);
}
if (fseek(bootFile, 0, SEEK_END) != 0) {
error("cannot position to end of boot sector file");
}
if (ftell(bootFile) != SECTOR_SIZE) {
error("'%s' is not a proper boot sector file (wrong length)", argv[2]);
}
if (fseek(bootFile, 0, SEEK_SET) != 0) {
error("cannot position to start of boot sector file");
}
if (fread(sectorBuffer, SECTOR_SIZE, 1, bootFile) != 1) {
error("cannot read data from boot sector file");
}
fclose(bootFile);
if (sectorBuffer[SECTOR_SIZE - 2] != 0x55 ||
sectorBuffer[SECTOR_SIZE - 1] != 0xAA) {
error("'%s' is not a proper boot sector file (no signature)", argv[2]);
}
if (fseek(diskFile, 0, SEEK_SET) != 0) {
error("cannot position to start of disk file");
}
if (fwrite(sectorBuffer, 1, SECTOR_SIZE, diskFile) != SECTOR_SIZE) {
error("cannot write boot sector to disk file");
}
fclose(diskFile);
return 0;
}
/mkmbr/mbr.s
0,0 → 1,49
;
; mbr.s -- the master boot record
;
 
; $8 I/O base address
; $9 temporary value
; $10 character
; $11 pointer to string
; $29 stack pointer
; $31 return address
 
.set tba,0xF0300000 ; terminal base address
 
start:
sub $29,$29,4 ; save return register
stw $31,$29,0
add $8,$0,tba ; set I/O base address
add $11,$0,msg ; pointer to string
loop:
ldbu $10,$11,0 ; get char
beq $10,$0,stop ; null - finished
jal out ; output char
add $11,$11,1 ; bump pointer
j loop ; next char
stop:
ldw $31,$29,0 ; restore return register
add $29,$29,4
jr $31 ; return
 
out:
ldw $9,$8,8 ; get status
and $9,$9,1 ; xmtr ready?
beq $9,$0,out ; no - wait
stw $10,$8,12 ; send char
jr $31 ; return
 
msg:
.byte 0x0D, 0x0A
.byte "Error: This is the default MBR, "
.byte "which cannot load anything."
.byte 0x0D, 0x0A
.byte "Please replace the disk, or "
.byte "write an operating system onto it."
.byte 0x0D, 0x0A
.byte 0x0D, 0x0A, 0
 
.locate 512-2
sign:
.byte 0x55, 0xAA
/mkmbr/Makefile
0,0 → 1,27
#
# Makefile for assembling the master boot record
#
 
BUILD = ../../../build
 
SFILES = $(wildcard *.s)
OBJFILES = $(patsubst %.s,%.o,$(SFILES))
BINFILES = $(patsubst %.s,%.bin,$(SFILES))
 
.PHONY: all install clean
.PRECIOUS: $(OBJFILES)
 
all: $(BINFILES)
 
install: $(BINFILES)
mkdir -p $(BUILD)/simtest
cp $(BINFILES) $(BUILD)/simtest
 
%.bin: %.o
$(BUILD)/bin/ld -h -rc 0xC0000000 -o $@ $<
 
%.o: %.s
$(BUILD)/bin/as -o $@ $<
 
clean:
rm -f *~ *.bin *.o
/Makefile
0,0 → 1,25
#
# Makefile for building disk tools for simulator tests
#
 
BUILD = ../build
 
DIRS = mkdisk mkmbr wrtmbr
 
.PHONY: all install clean
 
all:
for i in $(DIRS) ; do \
$(MAKE) -C $$i all ; \
done
 
install:
for i in $(DIRS) ; do \
$(MAKE) -C $$i install ; \
done
 
clean:
for i in $(DIRS) ; do \
$(MAKE) -C $$i clean ; \
done
rm -f *~

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