| Paul Mackerras | fca5dcd | 2005-11-08 22:55:08 +1100 | [diff] [blame] | 1 | /* |
| 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 | |
| 13 | int 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 | |
| 22 | static char line[256]; |
| 23 | static char *lineptr; |
| 24 | static int lineleft; |
| 25 | |
| 26 | int 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 | |
| 53 | int 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 | |
| 104 | char *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 | |
| 124 | void 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 | } |