1 /* taken from arch/powerpc/kernel/ppc-stub.c */
80  * When a packet is received, it is first acknowledged with either '+' or '-'.
81  * '+' indicates a successful transfer.  '-' indicates a failed transfer.
121 		return ch-'a'+10;  in hex()
123 		return ch-'0';  in hex()
125 		return ch-'A'+10;  in hex()
126 	return -1;  in hex()
139 	 * We use the upper half of buf as an intermediate buffer for the  in mem2hex()
147 	while (count-- > 0) {  in mem2hex()
167 	 * We use the upper half of buf as an intermediate buffer for the  in hex2mem()
171 	tmp_hex = tmp_raw - 1;  in hex2mem()
175 		tmp_raw--;  in hex2mem()
176 		hexValue = hex(*tmp_hex--);  in hex2mem()
180 		hexValue = hex(*tmp_hex--);  in hex2mem()
245 		xmitcsum = -1;  in getpacket()
268 				putDebugChar('-');	/* failed checksum */  in getpacket()
278 						buffer[i-3] = buffer[i];  in getpacket()
319 	int length;  in handle_exception()  local
363 		*ptr++ = hexchars[rp->num >> 4];  in handle_exception()
364 		*ptr++ = hexchars[rp->num & 0xf];  in handle_exception()
366 		ptr = (char *)mem2hex((char *)&rp->val, ptr, 4);  in handle_exception()
411 			length = kgdb_getregs(regs, remcomRegBuffer, BUFMAX);  in handle_exception()
412 			mem2hex(remcomRegBuffer, remcomOutBuffer, length);  in handle_exception()
416 			length = strlen(ptr);  in handle_exception()
417 			if ((length & 1) != 0) kgdb_error(KGDBERR_BADPARAMS);  in handle_exception()
418 			hex2mem(ptr, remcomRegBuffer, length/2);  in handle_exception()
419 			kgdb_putregs(regs, remcomRegBuffer, length/2);  in handle_exception()
428 			    && hexToInt(&ptr, &length))	{  in handle_exception()
429 				mem2hex((char *)addr, remcomOutBuffer, length);  in handle_exception()
440 			    && hexToInt(&ptr, &length)  in handle_exception()
442 				hex2mem(ptr, (char *)addr, length);  in handle_exception()
500 			    && ((length = strlen(ptr)) & 1) == 0) {  in handle_exception()
501 				hex2mem(ptr, remcomRegBuffer, length/2);  in handle_exception()
503 					remcomRegBuffer, length/2);  in handle_exception()
548 /* Output string in GDB O-packet format if GDB has connected. If nothing
555 	count = (count <= (sizeof(buffer) / 2 - 2))  in kgdb_output_string()
556 		? count : (sizeof(buffer) / 2 - 2);  in kgdb_output_string()
580     kgdb_breakpoint(argc - 1, argv + 1);  in do_kgdb()
589 	"    - executes a breakpoint so that kgdb mode is\n"
597 	"      example program in the U-Boot examples directory)."