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comparison target-utils/libcommon/cmd_r16.c @ 13:f4fc449a64ea

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target-utils libcommon infrastructure for interactive commands
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Fri, 03 May 2013 06:42:03 +0000
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12:165040ce4929 13:f4fc449a64ea
1 /*
2 * r16 hexaddr -- read a 16-bit register or memory location
3 */
4
5 #include <sys/types.h>
6 #include "types.h"
7
8 void
9 cmd_r16(argbulk)
10 char *argbulk;
11 {
12 char *argv[2];
13 u_long addr;
14
15 if (parse_args(argbulk, 1, 1, argv, 0) < 0)
16 return;
17 if (parse_hexarg(argv[0], 8, &addr) < 0) {
18 printf("ERROR: argument must be a valid 32-bit hex address\n");
19 return;
20 }
21 if (addr & 1) {
22 printf("ERROR: unaligned address\n");
23 return;
24 }
25 printf("%04X\n", *(volatile u16 *)addr);
26 }