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/*
* Copyright (C) 2009, Mukesh Rathor, Oracle Corp. All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License v2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 021110-1307, USA.
*/
#include <stdio.h>
#include <stdint.h>
#include <stdarg.h>
#include "gx.h"
void
gxprt(const char *fmt, ...)
{
char buf[2048];
va_list args;
va_start(args, fmt);
(void)vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
fprintf(stderr, "%s", buf);
fflush(stderr);
}
int
gx_fromhex(int a)
{
if (a >= '0' && a <= '9')
return a - '0';
else if (a >= 'a' && a <= 'f')
return a - 'a' + 10;
else
gxprt("Reply contains invalid hex digit");
return 0;
}
int
gx_tohex(int nib)
{
if (nib < 10)
return '0' + nib;
else
return 'a' + nib - 10;
}
void
gx_convert_int_to_ascii(char *from, char *to, int n)
{
int nib;
int ch;
while (n--) {
ch = *from++;
nib = ((ch & 0xf0) >> 4) & 0x0f;
*to++ = gx_tohex(nib);
nib = ch & 0x0f;
*to++ = gx_tohex(nib);
}
*to = 0;
}
/* input: "70676433206431" output: "pgd3 d1" n == 7 */
void
gx_convert_ascii_to_int(char *from, char *to, int n)
{
int nib1, nib2;
while (n--) {
nib1 = gx_fromhex(*from++);
nib2 = gx_fromhex(*from++);
*to++ = (((nib1 & 0x0f) << 4) & 0xf0) | (nib2 & 0x0f);
}
*to = 0;
}
void
gx_decode_zZ_packet(char *from, uint64_t *mem_addr_ptr)
{
int i = 0;
char ch;
*mem_addr_ptr = 0;
while ((ch=from[i++]) != ',') {
*mem_addr_ptr = *mem_addr_ptr << 4;
*mem_addr_ptr |= gx_fromhex(ch) & 0x0f;
}
}
/* Eg: mc0267d3a,1\0 : from points to char after 'm' */
void
gx_decode_m_packet(char *from, uint64_t *mem_addr_ptr, int *len_ptr)
{
int i = 0, j = 0;
char ch;
*mem_addr_ptr = *len_ptr = 0;
while ((ch=from[i++]) != ',') {
*mem_addr_ptr = *mem_addr_ptr << 4;
*mem_addr_ptr |= gx_fromhex(ch) & 0x0f;
}
for (j = 0; j < 4; j++) {
if ((ch=from[i++]) == 0)
break;
*len_ptr = *len_ptr << 4;
*len_ptr |= gx_fromhex(ch) & 0x0f;
}
}
/*
* Decode M pkt as in: Mc0267d3a,1:cc\0 where c0267d3a is the guest addr
* from points to char after 'M'
* Returns: address of byte after ":", ie, addr of cc in buf
*/
char *
gx_decode_M_packet(char *from, uint64_t *mem_addr_ptr, int *len_ptr)
{
int i = 0;
char ch;
*mem_addr_ptr = *len_ptr = 0;
while ((ch=from[i++]) != ',') {
*mem_addr_ptr = *mem_addr_ptr << 4;
*mem_addr_ptr |= gx_fromhex(ch) & 0x0f;
}
while ((ch = from[i++]) != ':') {
*len_ptr = *len_ptr << 4;
*len_ptr |= gx_fromhex(ch) & 0x0f;
}
return(&from[i]);
}
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