Annotation of sys/arch/mvme88k/stand/sboot/srec.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: srec.c,v 1.3 2006/05/16 22:52:26 miod Exp $ */
! 2:
! 3: /*
! 4: * Public domain, believed to be by Mike Price.
! 5: *
! 6: * convert binary file to Srecord format
! 7: */
! 8: #include <stdio.h>
! 9: #include <ctype.h>
! 10:
! 11: int get32();
! 12: void put32();
! 13: void sput();
! 14: void put();
! 15: int checksum();
! 16:
! 17: int mask;
! 18: int size;
! 19:
! 20: main(argc, argv)
! 21: int argc;
! 22: char *argv[];
! 23: {
! 24: char buf[32];
! 25: int cc;
! 26: int base;
! 27: int addr;
! 28: char *name;
! 29:
! 30: if (argc != 4) {
! 31: fprintf(stderr, "usage: %s {size} {hex_addr} {name}\n", argv[0]);
! 32: fprintf(stderr, "Size = 2, 3, or 4 byte address\n");
! 33: exit(1);
! 34: }
! 35: sscanf(argv[1], "%x", &size);
! 36: mask = (1 << (size * 8)) - 1;
! 37: if (!mask)
! 38: mask = (-1);
! 39: sscanf(argv[2], "%x", &base);
! 40: name = argv[3];
! 41:
! 42: if (size == 2)
! 43: printf("S0%02X%04X", 2 + strlen(name) + 1, 0);
! 44: if (size == 3)
! 45: printf("S0%02X%06X", 3 + strlen(name) + 1, 0);
! 46: if (size == 4)
! 47: printf("S0%02X%08X", 4 + strlen(name) + 1, 0);
! 48: sput(name);
! 49: printf("%02X\n", checksum(0, name, strlen(name), size));
! 50:
! 51: addr = base;
! 52: for (;;) {
! 53: cc = get32(buf);
! 54: if (cc > 0) {
! 55: put32(cc, addr, buf, size, mask);
! 56: addr += cc;
! 57: } else
! 58: break;
! 59: }
! 60:
! 61: buf[0] = base >> 8;
! 62: buf[1] = base;
! 63: printf("S%d%02X", 11 - size, 2 + 1);
! 64: switch (size) {
! 65: case 2:
! 66: printf("%04X", base & mask);
! 67: break;
! 68: case 3:
! 69: printf("%06X", base & mask);
! 70: break;
! 71: case 4:
! 72: printf("%08X", base & mask);
! 73: break;
! 74: }
! 75:
! 76: /*
! 77: * kludge -> some sizes need an extra count (1 if size == 3, 2 if
! 78: * size == 4). Don't ask why.
! 79: */
! 80: printf("%02X\n", checksum(base, (char *) 0, 0, size) +
! 81: (size - 2));
! 82: exit (0);
! 83: }
! 84:
! 85: int
! 86: get32(buf)
! 87: char buf[];
! 88: {
! 89: char *cp = buf;
! 90: int i;
! 91: int c;
! 92:
! 93: for (i = 0; i < 32; ++i) {
! 94: if ((c = getchar()) != EOF)
! 95: *cp++ = c;
! 96: else
! 97: break;
! 98: }
! 99: return (cp - buf);
! 100: }
! 101:
! 102: void
! 103: put32(len, addr, buf, size, mask)
! 104: int len;
! 105: int addr;
! 106: char buf[];
! 107: int size, mask;
! 108: {
! 109: char *cp = buf;
! 110: int i;
! 111:
! 112: if (size == 2)
! 113: printf("S1%02X%04X", 2 + len + 1, addr & mask);
! 114: if (size == 3)
! 115: printf("S2%02X%06X", 3 + len + 1, addr & mask);
! 116: if (size == 4)
! 117: printf("S3%02X%08X", 4 + len + 1, addr & mask);
! 118: for (i = 0; i < len; ++i)
! 119: put(*cp++);
! 120: printf("%02X\n", checksum(addr, buf, len, size));
! 121: }
! 122:
! 123: void
! 124: sput(s)
! 125: char *s;
! 126: {
! 127: while (*s != '\0')
! 128: put(*s++);
! 129: }
! 130:
! 131: void
! 132: put(c)
! 133: int c;
! 134: {
! 135: printf("%02X", c & 0xff);
! 136: }
! 137:
! 138: int
! 139: checksum(addr, buf, len, size)
! 140: int addr;
! 141: char buf[];
! 142: int len;
! 143: int size;
! 144: {
! 145: char *cp = buf;
! 146: int sum = 0xff - 1 - size - (len & 0xff);
! 147: int i;
! 148:
! 149: if (size == 4)
! 150: sum -= (addr >> 24) & 0xff;
! 151: if (size >= 3)
! 152: sum -= (addr >> 16) & 0xff;
! 153: sum -= (addr >> 8) & 0xff;
! 154: sum -= addr & 0xff;
! 155: for (i = 0; i < len; ++i) {
! 156: sum -= *cp++ & 0xff;
! 157: }
! 158: return (sum & 0xff);
! 159: }
CVSweb