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tools: add blkdumpb
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1
tools/.gitignore
vendored
1
tools/.gitignore
vendored
@ -1,3 +1,4 @@
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*.o
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/memdumpb
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/blkdumpb
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/uploadb
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@ -1,8 +1,10 @@
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MEMDUMP_TGT = memdumpb
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MEMDUMP_SRC = memdump.c
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BLKDUMP_TGT = blkdumpb
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BLKDUMP_SRC = blkdump.c
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UPLOAD_TGT = uploadb
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UPLOAD_SRC = upload.c
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TARGETS = $(MEMDUMP_TGT) $(UPLOAD_TGT)
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TARGETS = $(MEMDUMP_TGT) $(BLKDUMP_TGT) $(UPLOAD_TGT)
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OBJS = common.o
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all: $(TARGETS)
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@ -14,6 +16,9 @@ all: $(TARGETS)
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$(MEMDUMP_TGT): $(MEMDUMP_SRC) $(OBJS)
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$(CC) $(CFLAGS) $(MEMDUMP_SRC) $(OBJS) -o $@
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$(BLKDUMP_TGT): $(BLKDUMP_SRC) $(OBJS)
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$(CC) $(CFLAGS) $(BLKDUMP_SRC) $(OBJS) -o $@
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$(UPLOAD_TGT): $(UPLOAD_SRC) $(OBJS)
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$(CC) $(CFLAGS) $(UPLOAD_SRC) $(OBJS) -o $@
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37
tools/blkdump.c
Normal file
37
tools/blkdump.c
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@ -0,0 +1,37 @@
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#include <stdlib.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "common.h"
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/* Read specified number of bytes in active blkdev at active offset.
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*/
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int main(int argc, char **argv)
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{
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if (argc != 3) {
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fprintf(stderr, "Usage: ./memdump device bytecount\n");
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return 1;
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}
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unsigned int bytecount = strtol(argv[2], NULL, 16);
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if (!bytecount) {
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// nothing to spit
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return 0;
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}
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int fd = open(argv[1], O_RDWR|O_NOCTTY);
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char s[3];
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for (int i=0; i<bytecount; i++) {
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sendcmd(fd, "getb");
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read(fd, s, 2); // read prompt
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sendcmd(fd, "puth a");
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read(fd, s, 2); // read hex pair
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s[2] = 0; // null terminate
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unsigned char c = strtol(s, NULL, 16);
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putchar(c);
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read(fd, s, 2); // read prompt
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}
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return 0;
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}
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