URL
https://opencores.org/ocsvn/eco32/eco32/trunk
Subversion Repositories eco32
Compare Revisions
- This comparison shows the changes necessary to convert path
/eco32/tags/eco32-0.23/simtest/disk/wrtmbr
- from Rev 24 to Rev 157
- ↔ Reverse comparison
Rev 24 → Rev 157
/Makefile
0,0 → 1,36
# |
# Makefile for a program which writes the master boot record to the disk |
# |
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BUILD = ../../../build |
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CC = gcc -m32 |
CFLAGS = -g -Wall |
LDFLAGS = -g |
LDLIBS = -lm |
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SRCS = wrtmbr.c |
OBJS = $(patsubst %.c,%.o,$(SRCS)) |
BIN = wrtmbr |
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.PHONY: all install clean |
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all: $(BIN) |
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install: $(BIN) |
mkdir -p $(BUILD)/simtest |
cp $(BIN) $(BUILD)/simtest |
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$(BIN): $(OBJS) |
$(CC) $(LDFLAGS) -o $(BIN) $(OBJS) $(LDLIBS) |
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%.o: %.c |
$(CC) $(CFLAGS) -o $@ -c $< |
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depend.mak: |
$(CC) -MM -MG $(CFLAGS) $(SRCS) >depend.mak |
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-include depend.mak |
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clean: |
rm -f *~ $(OBJS) $(BIN) depend.mak |
/wrtmbr.c
0,0 → 1,76
/* |
* wrtmbr.c -- write the master boot record to the disk |
*/ |
|
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#include <stdio.h> |
#include <stdlib.h> |
#include <string.h> |
#include <stdarg.h> |
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#define SECTOR_SIZE 512 |
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void error(char *fmt, ...) { |
va_list ap; |
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va_start(ap, fmt); |
fprintf(stderr, "Error: "); |
vfprintf(stderr, fmt, ap); |
fprintf(stderr, "\n"); |
va_end(ap); |
exit(1); |
} |
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void usage(char *myself) { |
fprintf(stderr, |
"Usage: %s <disk file> <master boot record file>\n", |
myself); |
exit(1); |
} |
|
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int main(int argc, char *argv[]) { |
FILE *diskFile; |
FILE *bootFile; |
unsigned char sectorBuffer[SECTOR_SIZE]; |
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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; |
} |