mirror of
https://github.com/hsoft/collapseos.git
synced 2024-11-20 22:18:06 +11:00
c2b507eaff
So far, I hadn't managed to run those tools properly on OpenBSD. I was too confused by its stty peculiarities. I'm still confused, but at least I managed to make them work... most of the time...
49 lines
1.2 KiB
C
49 lines
1.2 KiB
C
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
|
|
#include "common.h"
|
|
|
|
/* Read specified number of bytes at specified memory address through a Forth
|
|
* remote shell and dump it to stdout.
|
|
*/
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
if (argc != 4) {
|
|
fprintf(stderr, "Usage: ./memdump device memptr bytecount\n");
|
|
return 1;
|
|
}
|
|
unsigned int memptr = strtol(argv[2], NULL, 16);
|
|
unsigned int bytecount = strtol(argv[3], NULL, 16);
|
|
fprintf(stderr, "memptr: 0x%04x bytecount: 0x%04x.\n", memptr, bytecount);
|
|
if (memptr+bytecount > 0xffff) {
|
|
fprintf(stderr, "memptr+bytecount out of range.\n");
|
|
return 1;
|
|
}
|
|
if (!bytecount) {
|
|
// nothing to spit
|
|
return 0;
|
|
}
|
|
|
|
int fd = ttyopen(argv[1]);
|
|
if (fd < 0) {
|
|
fprintf(stderr, "Could not open %s\n", argv[1]);
|
|
return 1;
|
|
}
|
|
char s[0x30];
|
|
sprintf(s, ": _ 0x%04x 0x%04x DO I @ .x LOOP ; _", memptr+bytecount, memptr);
|
|
sendcmd(fd, s);
|
|
|
|
for (int i=0; i<bytecount; i++) {
|
|
mread(fd, s, 2); // read hex pair
|
|
s[2] = 0; // null terminate
|
|
unsigned char c = strtol(s, NULL, 16);
|
|
putchar(c);
|
|
}
|
|
readprompt(fd);
|
|
sendcmdp(fd, "FORGET _");
|
|
return 0;
|
|
}
|