blob: 78765833f4c0459fa66022596824b2df951a607d [file] [log] [blame]
Paul Mackerrasfca5dcd2005-11-08 22:55:08 +11001/*
2 * Copyright (C) 1996-2005 Paul Mackerras.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
8 */
9#include <linux/string.h>
10#include <asm/time.h>
11#include "nonstdio.h"
12
13int xmon_putchar(int c)
14{
15 char ch = c;
16
17 if (c == '\n')
18 xmon_putchar('\r');
19 return xmon_write(&ch, 1) == 1? c: -1;
20}
21
22static char line[256];
23static char *lineptr;
24static int lineleft;
25
26int xmon_expect(const char *str, unsigned long timeout)
27{
28 int c;
29 unsigned long t0;
30
31 /* assume 25MHz default timebase if tb_ticks_per_sec not set yet */
32 timeout *= tb_ticks_per_sec? tb_ticks_per_sec: 25000000;
33 t0 = get_tbl();
34 do {
35 lineptr = line;
36 for (;;) {
37 c = xmon_read_poll();
38 if (c == -1) {
39 if (get_tbl() - t0 > timeout)
40 return 0;
41 continue;
42 }
43 if (c == '\n')
44 break;
45 if (c != '\r' && lineptr < &line[sizeof(line) - 1])
46 *lineptr++ = c;
47 }
48 *lineptr = 0;
49 } while (strstr(line, str) == NULL);
50 return 1;
51}
52
53int xmon_getchar(void)
54{
55 int c;
56
57 if (lineleft == 0) {
58 lineptr = line;
59 for (;;) {
60 c = xmon_readchar();
61 if (c == -1 || c == 4)
62 break;
63 if (c == '\r' || c == '\n') {
64 *lineptr++ = '\n';
65 xmon_putchar('\n');
66 break;
67 }
68 switch (c) {
69 case 0177:
70 case '\b':
71 if (lineptr > line) {
72 xmon_putchar('\b');
73 xmon_putchar(' ');
74 xmon_putchar('\b');
75 --lineptr;
76 }
77 break;
78 case 'U' & 0x1F:
79 while (lineptr > line) {
80 xmon_putchar('\b');
81 xmon_putchar(' ');
82 xmon_putchar('\b');
83 --lineptr;
84 }
85 break;
86 default:
87 if (lineptr >= &line[sizeof(line) - 1])
88 xmon_putchar('\a');
89 else {
90 xmon_putchar(c);
91 *lineptr++ = c;
92 }
93 }
94 }
95 lineleft = lineptr - line;
96 lineptr = line;
97 }
98 if (lineleft == 0)
99 return -1;
100 --lineleft;
101 return *lineptr++;
102}
103
104char *xmon_gets(char *str, int nb)
105{
106 char *p;
107 int c;
108
109 for (p = str; p < str + nb - 1; ) {
110 c = xmon_getchar();
111 if (c == -1) {
112 if (p == str)
113 return NULL;
114 break;
115 }
116 *p++ = c;
117 if (c == '\n')
118 break;
119 }
120 *p = 0;
121 return str;
122}
123
124void xmon_printf(const char *format, ...)
125{
126 va_list args;
127 int n;
128 static char xmon_outbuf[1024];
129
130 va_start(args, format);
131 n = vsnprintf(xmon_outbuf, sizeof(xmon_outbuf), format, args);
132 va_end(args);
133 xmon_write(xmon_outbuf, n);
134}