FreeCalypso > hg > freecalypso-tools
view target-utils/loadagent/cmd_memload.c @ 926:6a0aa8d36d06
rvinterf backslash escape: introduce libprint
The new helper function library named libprint is meant to replace
the badly misnamed libg23, and will soon contain functions for
printing all of the same kinds of GPF TST packets that are now handled
in libg23. However, we are also moving safe_print_trace() from libasync
to this new library, and changing it to emit our new backslash escape
format.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Tue, 23 May 2023 03:47:46 +0000 |
parents | 0da2cf5a999c |
children |
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/* * This module implements the ML (memory load) command, which will be * used by fc-chainload. * * The sole argument to the ML command is the body of an S3 record * with the initial "S3" characters stripped, i.e., starting with the * "count" byte, followed by the address, data and checksum bytes * exactly as in the original S3 record. */ #include "types.h" void cmd_memload(argbulk) char *argbulk; { char *argv[2], *s; u8 srecbin[256], cksum; int len, i, c; u32 addr; if (parse_args(argbulk, 1, 1, argv, 0) < 0) return; s = argv[0]; if (decode_hex_digits(s, 2, &len) < 0) { inv: printf("ERROR: ML argument is invalid\n"); return; } s += 2; if (len < 6) goto inv; srecbin[0] = len; for (i = 1; i <= len; i++) { if (decode_hex_digits(s, 2, &c) < 0) goto inv; s += 2; srecbin[i] = c; } cksum = 0; for (i = 0; i <= len; i++) cksum += srecbin[i]; if (cksum != 0xFF) { printf("ERROR: bad ML S-record checksum\n"); return; } len -= 5; addr = ((u32)srecbin[1] << 24) | ((u32)srecbin[2] << 16) | ((u32)srecbin[3] << 8) | (u32)srecbin[4]; memcpy(addr, srecbin + 5, len); }