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1 | /* |
1 | /* |
2 | * Copyright (C) 2005 Jakub Jermar |
2 | * Copyright (C) 2005 Jakub Jermar |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | #include <arch/ski/ski.h> |
29 | #include <arch/ski/ski.h> |
30 | 30 | ||
31 | /** Initialize debug console |
31 | /** Initialize debug console |
32 | * |
32 | * |
33 | * Issue SSC (Simulator System Call) to |
33 | * Issue SSC (Simulator System Call) to |
34 | * to open debug console. |
34 | * to open debug console. |
35 | */ |
35 | */ |
36 | void ski_init_console(void) |
36 | void ski_init_console(void) |
37 | { |
37 | { |
38 | __asm__ ( |
38 | __asm__ ( |
39 | "mov r15=%0\n" |
39 | "mov r15=%0\n" |
40 | "break 0x80000\n" |
40 | "break 0x80000\n" |
41 | : |
41 | : |
42 | : "i" (SKI_INIT_CONSOLE) |
42 | : "i" (SKI_INIT_CONSOLE) |
43 | : "r15", "r8" |
43 | : "r15", "r8" |
44 | ); |
44 | ); |
45 | } |
45 | } |
46 | 46 | ||
47 | /** Display character on debug console |
47 | /** Display character on debug console |
48 | * |
48 | * |
49 | * Use SSC (Simulator System Call) to |
49 | * Use SSC (Simulator System Call) to |
50 | * display character on debug console. |
50 | * display character on debug console. |
51 | * |
51 | * |
52 | * @param ch Character to be printed. |
52 | * @param ch Character to be printed. |
53 | */ |
53 | */ |
54 | void ski_putchar(const char ch) |
54 | void ski_putchar(const char ch) |
55 | { |
55 | { |
56 | __asm__ ( |
56 | __asm__ ( |
57 | "mov r15=%0\n" |
57 | "mov r15=%0\n" |
58 | "mov r32=%1\n" /* r32 is in0 */ |
58 | "mov r32=%1\n" /* r32 is in0 */ |
59 | "break 0x80000\n" /* modifies r8 */ |
59 | "break 0x80000\n" /* modifies r8 */ |
60 | : |
60 | : |
61 | : "i" (SKI_PUTCHAR), "r" (ch) |
61 | : "i" (SKI_PUTCHAR), "r" (ch) |
62 | : "r15", "in0", "r8" |
62 | : "r15", "in0", "r8" |
63 | ); |
63 | ); |
64 | 64 | ||
65 | if (ch == '\n') ski_putchar('\r'); |
65 | if (ch == '\n') ski_putchar('\r'); |
66 | } |
66 | } |
67 | 67 | ||
68 | 68 | ||
69 | /** Display character on debug console |
69 | /** Display character on debug console |
70 | * |
70 | * |
71 | * Use SSC (Simulator System Call) to |
71 | * Use SSC (Simulator System Call) to |
72 | * get character from debug console. |
72 | * get character from debug console. |
- | 73 | * Non blocking HW call |
|
- | 74 | * @return Returns ascii code of pressed key or 0 if no key pressed |
|
73 | */ |
75 | */ |
74 | __s32 ski_getchar(void) |
76 | __s32 ski_getchar(void) |
75 | { |
77 | { |
76 | __u64 ch; |
78 | __u64 ch; |
77 | 79 | ||
78 | __asm__ ( |
80 | __asm__ ( |
79 | "mov r15=%0\n" |
81 | "mov r15=%0\n" |
80 | "break 0x80000;;\n" /* modifies r8 */ |
82 | "break 0x80000;;\n" /* modifies r8 */ |
81 | "mov %1=r8;;\n" |
83 | "mov %1=r8;;\n" |
82 | 84 | ||
83 | : |
85 | : |
84 | : "i" (SKI_GETCHAR), "r" (ch) |
86 | : "i" (SKI_GETCHAR), "r" (ch) |
85 | : "r15", "r8" |
87 | : "r15", "r8" |
86 | ); |
88 | ); |
87 | 89 | ||
88 | return (__s32)ch; |
90 | return (__s32)ch; |
89 | } |
91 | } |
90 | 92 |