diff options
Diffstat (limited to 'firmware/asm')
-rw-r--r-- | firmware/asm/arm/thread.c | 94 | ||||
-rw-r--r-- | firmware/asm/arm/thread.h | 36 | ||||
-rw-r--r-- | firmware/asm/m68k/thread.c | 101 | ||||
-rw-r--r-- | firmware/asm/m68k/thread.h | 31 | ||||
-rw-r--r-- | firmware/asm/mips/thread-mips32.c | 111 | ||||
-rw-r--r-- | firmware/asm/mips/thread.c | 6 | ||||
-rw-r--r-- | firmware/asm/mips/thread.h | 31 | ||||
-rw-r--r-- | firmware/asm/sh/thread.c | 96 | ||||
-rw-r--r-- | firmware/asm/sh/thread.h | 30 | ||||
-rw-r--r-- | firmware/asm/thread-unix.c | 307 | ||||
-rw-r--r-- | firmware/asm/thread-win32.c | 76 | ||||
-rw-r--r-- | firmware/asm/thread.c | 21 | ||||
-rw-r--r-- | firmware/asm/thread.h | 57 |
13 files changed, 997 insertions, 0 deletions
diff --git a/firmware/asm/arm/thread.c b/firmware/asm/arm/thread.c new file mode 100644 index 0000000000..fd443f2873 --- /dev/null +++ b/firmware/asm/arm/thread.c | |||
@@ -0,0 +1,94 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2005 by Thom Johansen | ||
11 | * | ||
12 | * Generic ARM threading support | ||
13 | * | ||
14 | * This program is free software; you can redistribute it and/or | ||
15 | * modify it under the terms of the GNU General Public License | ||
16 | * as published by the Free Software Foundation; either version 2 | ||
17 | * of the License, or (at your option) any later version. | ||
18 | * | ||
19 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
20 | * KIND, either express or implied. | ||
21 | * | ||
22 | ****************************************************************************/ | ||
23 | |||
24 | /*--------------------------------------------------------------------------- | ||
25 | * Start the thread running and terminate it if it returns | ||
26 | *--------------------------------------------------------------------------- | ||
27 | */ | ||
28 | static void __attribute__((naked)) USED_ATTR start_thread(void) | ||
29 | { | ||
30 | /* r0 = context */ | ||
31 | asm volatile ( | ||
32 | "ldr sp, [r0, #32] \n" /* Load initial sp */ | ||
33 | "ldr r4, [r0, #40] \n" /* start in r4 since it's non-volatile */ | ||
34 | "mov r1, #0 \n" /* Mark thread as running */ | ||
35 | "str r1, [r0, #40] \n" | ||
36 | #if NUM_CORES > 1 | ||
37 | "ldr r0, =commit_discard_idcache \n" /* Invalidate this core's cache. */ | ||
38 | "mov lr, pc \n" /* This could be the first entry into */ | ||
39 | "bx r0 \n" /* plugin or codec code for this core. */ | ||
40 | #endif | ||
41 | "mov lr, pc \n" /* Call thread function */ | ||
42 | "bx r4 \n" | ||
43 | ); /* No clobber list - new thread doesn't care */ | ||
44 | thread_exit(); | ||
45 | #if 0 | ||
46 | asm volatile (".ltorg"); /* Dump constant pool */ | ||
47 | #endif | ||
48 | } | ||
49 | |||
50 | /* For startup, place context pointer in r4 slot, start_thread pointer in r5 | ||
51 | * slot, and thread function pointer in context.start. See load_context for | ||
52 | * what happens when thread is initially going to run. */ | ||
53 | #define THREAD_STARTUP_INIT(core, thread, function) \ | ||
54 | ({ (thread)->context.r[0] = (uint32_t)&(thread)->context, \ | ||
55 | (thread)->context.r[1] = (uint32_t)start_thread, \ | ||
56 | (thread)->context.start = (uint32_t)function; }) | ||
57 | |||
58 | |||
59 | /*--------------------------------------------------------------------------- | ||
60 | * Store non-volatile context. | ||
61 | *--------------------------------------------------------------------------- | ||
62 | */ | ||
63 | static inline void store_context(void* addr) | ||
64 | { | ||
65 | asm volatile( | ||
66 | "stmia %0, { r4-r11, sp, lr } \n" | ||
67 | : : "r" (addr) | ||
68 | ); | ||
69 | } | ||
70 | |||
71 | /*--------------------------------------------------------------------------- | ||
72 | * Load non-volatile context. | ||
73 | *--------------------------------------------------------------------------- | ||
74 | */ | ||
75 | static inline void load_context(const void* addr) | ||
76 | { | ||
77 | asm volatile( | ||
78 | "ldr r0, [%0, #40] \n" /* Load start pointer */ | ||
79 | "cmp r0, #0 \n" /* Check for NULL */ | ||
80 | |||
81 | /* If not already running, jump to start */ | ||
82 | #if ARM_ARCH == 4 && defined(USE_THUMB) | ||
83 | "ldmneia %0, { r0, r12 } \n" | ||
84 | "bxne r12 \n" | ||
85 | #else | ||
86 | "ldmneia %0, { r0, pc } \n" | ||
87 | #endif | ||
88 | |||
89 | "ldmia %0, { r4-r11, sp, lr } \n" /* Load regs r4 to r14 from context */ | ||
90 | : : "r" (addr) : "r0" /* only! */ | ||
91 | ); | ||
92 | } | ||
93 | |||
94 | |||
diff --git a/firmware/asm/arm/thread.h b/firmware/asm/arm/thread.h new file mode 100644 index 0000000000..ec9bbcb3cd --- /dev/null +++ b/firmware/asm/arm/thread.h | |||
@@ -0,0 +1,36 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2002 by Ulf Ralberg | ||
11 | * | ||
12 | * This program is free software; you can redistribute it and/or | ||
13 | * modify it under the terms of the GNU General Public License | ||
14 | * as published by the Free Software Foundation; either version 2 | ||
15 | * of the License, or (at your option) any later version. | ||
16 | * | ||
17 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
18 | * KIND, either express or implied. | ||
19 | * | ||
20 | ****************************************************************************/ | ||
21 | |||
22 | #include "config.h" | ||
23 | |||
24 | struct regs | ||
25 | { | ||
26 | uint32_t r[8]; /* 0-28 - Registers r4-r11 */ | ||
27 | uint32_t sp; /* 32 - Stack pointer (r13) */ | ||
28 | uint32_t lr; /* 36 - r14 (lr) */ | ||
29 | uint32_t start; /* 40 - Thread start address, or NULL when started */ | ||
30 | }; | ||
31 | |||
32 | #if (CONFIG_PLATFORM & PLATFORM_HOSTED) | ||
33 | #define DEFAULT_STACK_SIZE 0x1000 /* Bytes */ | ||
34 | #else | ||
35 | #define DEFAULT_STACK_SIZE 0x400 /* Bytes */ | ||
36 | #endif | ||
diff --git a/firmware/asm/m68k/thread.c b/firmware/asm/m68k/thread.c new file mode 100644 index 0000000000..7df89001d7 --- /dev/null +++ b/firmware/asm/m68k/thread.c | |||
@@ -0,0 +1,101 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2004 by Linus Nielsen Feltzing | ||
11 | * | ||
12 | * Coldfire processor threading support | ||
13 | * | ||
14 | * This program is free software; you can redistribute it and/or | ||
15 | * modify it under the terms of the GNU General Public License | ||
16 | * as published by the Free Software Foundation; either version 2 | ||
17 | * of the License, or (at your option) any later version. | ||
18 | * | ||
19 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
20 | * KIND, either express or implied. | ||
21 | * | ||
22 | ****************************************************************************/ | ||
23 | |||
24 | /*--------------------------------------------------------------------------- | ||
25 | * Start the thread running and terminate it if it returns | ||
26 | *--------------------------------------------------------------------------- | ||
27 | */ | ||
28 | void start_thread(void); /* Provide C access to ASM label */ | ||
29 | static void USED_ATTR __start_thread(void) | ||
30 | { | ||
31 | /* a0=macsr, a1=context */ | ||
32 | asm volatile ( | ||
33 | "start_thread: \n" /* Start here - no naked attribute */ | ||
34 | "move.l %a0, %macsr \n" /* Set initial mac status reg */ | ||
35 | "lea.l 48(%a1), %a1 \n" | ||
36 | "move.l (%a1)+, %sp \n" /* Set initial stack */ | ||
37 | "move.l (%a1), %a2 \n" /* Fetch thread function pointer */ | ||
38 | "clr.l (%a1) \n" /* Mark thread running */ | ||
39 | "jsr (%a2) \n" /* Call thread function */ | ||
40 | ); | ||
41 | thread_exit(); | ||
42 | } | ||
43 | |||
44 | /* Set EMAC unit to fractional mode with saturation for each new thread, | ||
45 | * since that's what'll be the most useful for most things which the dsp | ||
46 | * will do. Codecs should still initialize their preferred modes | ||
47 | * explicitly. Context pointer is placed in d2 slot and start_thread | ||
48 | * pointer in d3 slot. thread function pointer is placed in context.start. | ||
49 | * See load_context for what happens when thread is initially going to | ||
50 | * run. | ||
51 | */ | ||
52 | #define THREAD_STARTUP_INIT(core, thread, function) \ | ||
53 | ({ (thread)->context.macsr = EMAC_FRACTIONAL | EMAC_SATURATE, \ | ||
54 | (thread)->context.d[0] = (uint32_t)&(thread)->context, \ | ||
55 | (thread)->context.d[1] = (uint32_t)start_thread, \ | ||
56 | (thread)->context.start = (uint32_t)(function); }) | ||
57 | |||
58 | /*--------------------------------------------------------------------------- | ||
59 | * Store non-volatile context. | ||
60 | *--------------------------------------------------------------------------- | ||
61 | */ | ||
62 | static inline void store_context(void* addr) | ||
63 | { | ||
64 | asm volatile ( | ||
65 | "move.l %%macsr,%%d0 \n" | ||
66 | "movem.l %%d0/%%d2-%%d7/%%a2-%%a7,(%0) \n" | ||
67 | : : "a" (addr) : "d0" /* only! */ | ||
68 | ); | ||
69 | } | ||
70 | |||
71 | /*--------------------------------------------------------------------------- | ||
72 | * Load non-volatile context. | ||
73 | *--------------------------------------------------------------------------- | ||
74 | */ | ||
75 | static inline void load_context(const void* addr) | ||
76 | { | ||
77 | asm volatile ( | ||
78 | "move.l 52(%0), %%d0 \n" /* Get start address */ | ||
79 | "beq.b 1f \n" /* NULL -> already running */ | ||
80 | "movem.l (%0), %%a0-%%a2 \n" /* a0=macsr, a1=context, a2=start_thread */ | ||
81 | "jmp (%%a2) \n" /* Start the thread */ | ||
82 | "1: \n" | ||
83 | "movem.l (%0), %%d0/%%d2-%%d7/%%a2-%%a7 \n" /* Load context */ | ||
84 | "move.l %%d0, %%macsr \n" | ||
85 | : : "a" (addr) : "d0" /* only! */ | ||
86 | ); | ||
87 | } | ||
88 | |||
89 | /*--------------------------------------------------------------------------- | ||
90 | * Call this from asm to make sure the sp is pointing to the | ||
91 | * correct place before the context is saved. | ||
92 | *--------------------------------------------------------------------------- | ||
93 | */ | ||
94 | static inline void _profile_thread_stopped(int current_thread) | ||
95 | { | ||
96 | asm volatile ("move.l %[id], -(%%sp)\n\t" | ||
97 | "jsr profile_thread_stopped\n\t" | ||
98 | "addq.l #4, %%sp\n\t" | ||
99 | :: [id] "r" (current_thread) | ||
100 | : "cc", "memory"); | ||
101 | } | ||
diff --git a/firmware/asm/m68k/thread.h b/firmware/asm/m68k/thread.h new file mode 100644 index 0000000000..9bdbed0c3e --- /dev/null +++ b/firmware/asm/m68k/thread.h | |||
@@ -0,0 +1,31 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2002 by Ulf Ralberg | ||
11 | * | ||
12 | * This program is free software; you can redistribute it and/or | ||
13 | * modify it under the terms of the GNU General Public License | ||
14 | * as published by the Free Software Foundation; either version 2 | ||
15 | * of the License, or (at your option) any later version. | ||
16 | * | ||
17 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
18 | * KIND, either express or implied. | ||
19 | * | ||
20 | ****************************************************************************/ | ||
21 | |||
22 | struct regs | ||
23 | { | ||
24 | uint32_t macsr; /* 0 - EMAC status register */ | ||
25 | uint32_t d[6]; /* 4-24 - d2-d7 */ | ||
26 | uint32_t a[5]; /* 28-44 - a2-a6 */ | ||
27 | uint32_t sp; /* 48 - Stack pointer (a7) */ | ||
28 | uint32_t start; /* 52 - Thread start address, or NULL when started */ | ||
29 | }; | ||
30 | |||
31 | #define DEFAULT_STACK_SIZE 0x400 /* Bytes */ | ||
diff --git a/firmware/asm/mips/thread-mips32.c b/firmware/asm/mips/thread-mips32.c new file mode 100644 index 0000000000..e754df7e29 --- /dev/null +++ b/firmware/asm/mips/thread-mips32.c | |||
@@ -0,0 +1,111 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2008 by Maurus Cuelenaere | ||
11 | * | ||
12 | * 32-bit MIPS threading support | ||
13 | * | ||
14 | * This program is free software; you can redistribute it and/or | ||
15 | * modify it under the terms of the GNU General Public License | ||
16 | * as published by the Free Software Foundation; either version 2 | ||
17 | * of the License, or (at your option) any later version. | ||
18 | * | ||
19 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
20 | * KIND, either express or implied. | ||
21 | * | ||
22 | ****************************************************************************/ | ||
23 | |||
24 | /*--------------------------------------------------------------------------- | ||
25 | * Start the thread running and terminate it if it returns | ||
26 | *--------------------------------------------------------------------------- | ||
27 | */ | ||
28 | |||
29 | void start_thread(void); /* Provide C access to ASM label */ | ||
30 | static void USED_ATTR _start_thread(void) | ||
31 | { | ||
32 | /* t1 = context */ | ||
33 | asm volatile ( | ||
34 | "start_thread: \n" | ||
35 | ".set noreorder \n" | ||
36 | ".set noat \n" | ||
37 | "lw $8, 4($9) \n" /* Fetch thread function pointer ($8 = t0, $9 = t1) */ | ||
38 | "lw $29, 36($9) \n" /* Set initial sp(=$29) */ | ||
39 | "jalr $8 \n" /* Start the thread */ | ||
40 | "sw $0, 44($9) \n" /* Clear start address */ | ||
41 | ".set at \n" | ||
42 | ".set reorder \n" | ||
43 | ); | ||
44 | thread_exit(); | ||
45 | } | ||
46 | |||
47 | /* Place context pointer in s0 slot, function pointer in s1 slot, and | ||
48 | * start_thread pointer in context_start */ | ||
49 | #define THREAD_STARTUP_INIT(core, thread, function) \ | ||
50 | ({ (thread)->context.r[0] = (uint32_t)&(thread)->context, \ | ||
51 | (thread)->context.r[1] = (uint32_t)(function), \ | ||
52 | (thread)->context.start = (uint32_t)start_thread; }) | ||
53 | |||
54 | /*--------------------------------------------------------------------------- | ||
55 | * Store non-volatile context. | ||
56 | *--------------------------------------------------------------------------- | ||
57 | */ | ||
58 | static inline void store_context(void* addr) | ||
59 | { | ||
60 | asm volatile ( | ||
61 | ".set noreorder \n" | ||
62 | ".set noat \n" | ||
63 | "sw $16, 0(%0) \n" /* s0 */ | ||
64 | "sw $17, 4(%0) \n" /* s1 */ | ||
65 | "sw $18, 8(%0) \n" /* s2 */ | ||
66 | "sw $19, 12(%0) \n" /* s3 */ | ||
67 | "sw $20, 16(%0) \n" /* s4 */ | ||
68 | "sw $21, 20(%0) \n" /* s5 */ | ||
69 | "sw $22, 24(%0) \n" /* s6 */ | ||
70 | "sw $23, 28(%0) \n" /* s7 */ | ||
71 | "sw $30, 32(%0) \n" /* fp */ | ||
72 | "sw $29, 36(%0) \n" /* sp */ | ||
73 | "sw $31, 40(%0) \n" /* ra */ | ||
74 | ".set at \n" | ||
75 | ".set reorder \n" | ||
76 | : : "r" (addr) | ||
77 | ); | ||
78 | } | ||
79 | |||
80 | /*--------------------------------------------------------------------------- | ||
81 | * Load non-volatile context. | ||
82 | *--------------------------------------------------------------------------- | ||
83 | */ | ||
84 | static inline void load_context(const void* addr) | ||
85 | { | ||
86 | asm volatile ( | ||
87 | ".set noat \n" | ||
88 | ".set noreorder \n" | ||
89 | "lw $8, 44(%0) \n" /* Get start address ($8 = t0) */ | ||
90 | "beqz $8, running \n" /* NULL -> already running */ | ||
91 | "nop \n" | ||
92 | "jr $8 \n" | ||
93 | "move $9, %0 \n" /* t1 = context */ | ||
94 | "running: \n" | ||
95 | "lw $16, 0(%0) \n" /* s0 */ | ||
96 | "lw $17, 4(%0) \n" /* s1 */ | ||
97 | "lw $18, 8(%0) \n" /* s2 */ | ||
98 | "lw $19, 12(%0) \n" /* s3 */ | ||
99 | "lw $20, 16(%0) \n" /* s4 */ | ||
100 | "lw $21, 20(%0) \n" /* s5 */ | ||
101 | "lw $22, 24(%0) \n" /* s6 */ | ||
102 | "lw $23, 28(%0) \n" /* s7 */ | ||
103 | "lw $30, 32(%0) \n" /* fp */ | ||
104 | "lw $29, 36(%0) \n" /* sp */ | ||
105 | "lw $31, 40(%0) \n" /* ra */ | ||
106 | ".set at \n" | ||
107 | ".set reorder \n" | ||
108 | : : "r" (addr) : "t0", "t1" | ||
109 | ); | ||
110 | } | ||
111 | |||
diff --git a/firmware/asm/mips/thread.c b/firmware/asm/mips/thread.c new file mode 100644 index 0000000000..37480da10a --- /dev/null +++ b/firmware/asm/mips/thread.c | |||
@@ -0,0 +1,6 @@ | |||
1 | #if CPU_MIPS == 32 | ||
2 | #include "thread-mips32.c" | ||
3 | #else | ||
4 | #error Missing thread impl | ||
5 | #endif | ||
6 | |||
diff --git a/firmware/asm/mips/thread.h b/firmware/asm/mips/thread.h new file mode 100644 index 0000000000..ac37560a68 --- /dev/null +++ b/firmware/asm/mips/thread.h | |||
@@ -0,0 +1,31 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2002 by Ulf Ralberg | ||
11 | * | ||
12 | * This program is free software; you can redistribute it and/or | ||
13 | * modify it under the terms of the GNU General Public License | ||
14 | * as published by the Free Software Foundation; either version 2 | ||
15 | * of the License, or (at your option) any later version. | ||
16 | * | ||
17 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
18 | * KIND, either express or implied. | ||
19 | * | ||
20 | ****************************************************************************/ | ||
21 | |||
22 | struct regs | ||
23 | { | ||
24 | uint32_t r[9]; /* 0-32 - Registers s0-s7, fp */ | ||
25 | uint32_t sp; /* 36 - Stack pointer */ | ||
26 | uint32_t ra; /* 40 - Return address */ | ||
27 | uint32_t start; /* 44 - Thread start address, or NULL when started */ | ||
28 | }; | ||
29 | |||
30 | #define DEFAULT_STACK_SIZE 0x400 /* Bytes */ | ||
31 | |||
diff --git a/firmware/asm/sh/thread.c b/firmware/asm/sh/thread.c new file mode 100644 index 0000000000..e63470c4a1 --- /dev/null +++ b/firmware/asm/sh/thread.c | |||
@@ -0,0 +1,96 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2002 by Ulf Ralberg | ||
11 | * | ||
12 | * SH processor threading support | ||
13 | * | ||
14 | * This program is free software; you can redistribute it and/or | ||
15 | * modify it under the terms of the GNU General Public License | ||
16 | * as published by the Free Software Foundation; either version 2 | ||
17 | * of the License, or (at your option) any later version. | ||
18 | * | ||
19 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
20 | * KIND, either express or implied. | ||
21 | * | ||
22 | ****************************************************************************/ | ||
23 | |||
24 | /*--------------------------------------------------------------------------- | ||
25 | * Start the thread running and terminate it if it returns | ||
26 | *--------------------------------------------------------------------------- | ||
27 | */ | ||
28 | void start_thread(void); /* Provide C access to ASM label */ | ||
29 | static void USED_ATTR __start_thread(void) | ||
30 | { | ||
31 | /* r8 = context */ | ||
32 | asm volatile ( | ||
33 | "_start_thread: \n" /* Start here - no naked attribute */ | ||
34 | "mov.l @(4, r8), r0 \n" /* Fetch thread function pointer */ | ||
35 | "mov.l @(28, r8), r15 \n" /* Set initial sp */ | ||
36 | "mov #0, r1 \n" /* Start the thread */ | ||
37 | "jsr @r0 \n" | ||
38 | "mov.l r1, @(36, r8) \n" /* Clear start address */ | ||
39 | ); | ||
40 | thread_exit(); | ||
41 | } | ||
42 | |||
43 | /* Place context pointer in r8 slot, function pointer in r9 slot, and | ||
44 | * start_thread pointer in context_start */ | ||
45 | #define THREAD_STARTUP_INIT(core, thread, function) \ | ||
46 | ({ (thread)->context.r[0] = (uint32_t)&(thread)->context, \ | ||
47 | (thread)->context.r[1] = (uint32_t)(function), \ | ||
48 | (thread)->context.start = (uint32_t)start_thread; }) | ||
49 | |||
50 | /*--------------------------------------------------------------------------- | ||
51 | * Store non-volatile context. | ||
52 | *--------------------------------------------------------------------------- | ||
53 | */ | ||
54 | static inline void store_context(void* addr) | ||
55 | { | ||
56 | asm volatile ( | ||
57 | "add #36, %0 \n" /* Start at last reg. By the time routine */ | ||
58 | "sts.l pr, @-%0 \n" /* is done, %0 will have the original value */ | ||
59 | "mov.l r15,@-%0 \n" | ||
60 | "mov.l r14,@-%0 \n" | ||
61 | "mov.l r13,@-%0 \n" | ||
62 | "mov.l r12,@-%0 \n" | ||
63 | "mov.l r11,@-%0 \n" | ||
64 | "mov.l r10,@-%0 \n" | ||
65 | "mov.l r9, @-%0 \n" | ||
66 | "mov.l r8, @-%0 \n" | ||
67 | : : "r" (addr) | ||
68 | ); | ||
69 | } | ||
70 | |||
71 | /*--------------------------------------------------------------------------- | ||
72 | * Load non-volatile context. | ||
73 | *--------------------------------------------------------------------------- | ||
74 | */ | ||
75 | static inline void load_context(const void* addr) | ||
76 | { | ||
77 | asm volatile ( | ||
78 | "mov.l @(36, %0), r0 \n" /* Get start address */ | ||
79 | "tst r0, r0 \n" | ||
80 | "bt .running \n" /* NULL -> already running */ | ||
81 | "jmp @r0 \n" /* r8 = context */ | ||
82 | ".running: \n" | ||
83 | "mov.l @%0+, r8 \n" /* Executes in delay slot and outside it */ | ||
84 | "mov.l @%0+, r9 \n" | ||
85 | "mov.l @%0+, r10 \n" | ||
86 | "mov.l @%0+, r11 \n" | ||
87 | "mov.l @%0+, r12 \n" | ||
88 | "mov.l @%0+, r13 \n" | ||
89 | "mov.l @%0+, r14 \n" | ||
90 | "mov.l @%0+, r15 \n" | ||
91 | "lds.l @%0+, pr \n" | ||
92 | : : "r" (addr) : "r0" /* only! */ | ||
93 | ); | ||
94 | } | ||
95 | |||
96 | |||
diff --git a/firmware/asm/sh/thread.h b/firmware/asm/sh/thread.h new file mode 100644 index 0000000000..aa5fe519c6 --- /dev/null +++ b/firmware/asm/sh/thread.h | |||
@@ -0,0 +1,30 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2002 by Ulf Ralberg | ||
11 | * | ||
12 | * This program is free software; you can redistribute it and/or | ||
13 | * modify it under the terms of the GNU General Public License | ||
14 | * as published by the Free Software Foundation; either version 2 | ||
15 | * of the License, or (at your option) any later version. | ||
16 | * | ||
17 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
18 | * KIND, either express or implied. | ||
19 | * | ||
20 | ****************************************************************************/ | ||
21 | |||
22 | struct regs | ||
23 | { | ||
24 | uint32_t r[7]; /* 0-24 - Registers r8 thru r14 */ | ||
25 | uint32_t sp; /* 28 - Stack pointer (r15) */ | ||
26 | uint32_t pr; /* 32 - Procedure register */ | ||
27 | uint32_t start; /* 36 - Thread start address, or NULL when started */ | ||
28 | }; | ||
29 | |||
30 | #define DEFAULT_STACK_SIZE 0x400 /* Bytes */ | ||
diff --git a/firmware/asm/thread-unix.c b/firmware/asm/thread-unix.c new file mode 100644 index 0000000000..3c5e7c96ee --- /dev/null +++ b/firmware/asm/thread-unix.c | |||
@@ -0,0 +1,307 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2011 by Thomas Martitz | ||
11 | * | ||
12 | * Generic unix threading support | ||
13 | * | ||
14 | * This program is free software; you can redistribute it and/or | ||
15 | * modify it under the terms of the GNU General Public License | ||
16 | * as published by the Free Software Foundation; either version 2 | ||
17 | * of the License, or (at your option) any later version. | ||
18 | * | ||
19 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
20 | * KIND, either express or implied. | ||
21 | * | ||
22 | ****************************************************************************/ | ||
23 | |||
24 | #include <stdlib.h> | ||
25 | #include <stdbool.h> | ||
26 | #include <signal.h> | ||
27 | #include <stdio.h> | ||
28 | #include <setjmp.h> | ||
29 | #include <unistd.h> | ||
30 | #include <pthread.h> | ||
31 | #include <errno.h> | ||
32 | #include "debug.h" | ||
33 | |||
34 | static volatile bool sig_handler_called; | ||
35 | static volatile jmp_buf tramp_buf; | ||
36 | static volatile jmp_buf bootstrap_buf; | ||
37 | static void (*thread_func)(void); | ||
38 | static const int trampoline_sig = SIGUSR1; | ||
39 | static pthread_t main_thread; | ||
40 | |||
41 | static struct ctx { | ||
42 | jmp_buf thread_buf; | ||
43 | } thread_bufs[MAXTHREADS]; | ||
44 | static struct ctx* thread_context, *target_context; | ||
45 | static int curr_uc; | ||
46 | |||
47 | static void trampoline(int sig); | ||
48 | static void bootstrap_context(void) __attribute__((noinline)); | ||
49 | |||
50 | /* The *_context functions are heavily based on Gnu pth | ||
51 | * http://www.gnu.org/software/pth/ | ||
52 | * | ||
53 | * adjusted to work in a multi-thread environment to | ||
54 | * offer a ucontext-like API | ||
55 | */ | ||
56 | |||
57 | /* | ||
58 | * VARIANT 2: THE SIGNAL STACK TRICK | ||
59 | * | ||
60 | * This uses sigstack/sigaltstack() and friends and is really the | ||
61 | * most tricky part of Pth. When you understand the following | ||
62 | * stuff you're a good Unix hacker and then you've already | ||
63 | * understood the gory ingredients of Pth. So, either welcome to | ||
64 | * the club of hackers, or do yourself a favor and skip this ;) | ||
65 | * | ||
66 | * The ingenious fact is that this variant runs really on _all_ POSIX | ||
67 | * compliant systems without special platform kludges. But be _VERY_ | ||
68 | * carefully when you change something in the following code. The slightest | ||
69 | * change or reordering can lead to horribly broken code. Really every | ||
70 | * function call in the following case is intended to be how it is, doubt | ||
71 | * me... | ||
72 | * | ||
73 | * For more details we strongly recommend you to read the companion | ||
74 | * paper ``Portable Multithreading -- The Signal Stack Trick for | ||
75 | * User-Space Thread Creation'' from Ralf S. Engelschall. A copy of the | ||
76 | * draft of this paper you can find in the file rse-pmt.ps inside the | ||
77 | * GNU Pth distribution. | ||
78 | */ | ||
79 | |||
80 | static int make_context(struct ctx *ctx, void (*f)(void), char *sp, size_t stack_size) | ||
81 | { | ||
82 | struct sigaction sa; | ||
83 | struct sigaction osa; | ||
84 | stack_t ss; | ||
85 | stack_t oss; | ||
86 | sigset_t osigs; | ||
87 | sigset_t sigs; | ||
88 | |||
89 | disable_irq(); | ||
90 | /* | ||
91 | * Preserve the trampoline_sig signal state, block trampoline_sig, | ||
92 | * and establish our signal handler. The signal will | ||
93 | * later transfer control onto the signal stack. | ||
94 | */ | ||
95 | sigemptyset(&sigs); | ||
96 | sigaddset(&sigs, trampoline_sig); | ||
97 | sigprocmask(SIG_BLOCK, &sigs, &osigs); | ||
98 | sa.sa_handler = trampoline; | ||
99 | sigemptyset(&sa.sa_mask); | ||
100 | sa.sa_flags = SA_ONSTACK; | ||
101 | if (sigaction(trampoline_sig, &sa, &osa) != 0) | ||
102 | { | ||
103 | DEBUGF("%s(): %s\n", __func__, strerror(errno)); | ||
104 | return false; | ||
105 | } | ||
106 | /* | ||
107 | * Set the new stack. | ||
108 | * | ||
109 | * For sigaltstack we're lucky [from sigaltstack(2) on | ||
110 | * FreeBSD 3.1]: ``Signal stacks are automatically adjusted | ||
111 | * for the direction of stack growth and alignment | ||
112 | * requirements'' | ||
113 | * | ||
114 | * For sigstack we have to decide ourself [from sigstack(2) | ||
115 | * on Solaris 2.6]: ``The direction of stack growth is not | ||
116 | * indicated in the historical definition of struct sigstack. | ||
117 | * The only way to portably establish a stack pointer is for | ||
118 | * the application to determine stack growth direction.'' | ||
119 | */ | ||
120 | ss.ss_sp = sp; | ||
121 | ss.ss_size = stack_size; | ||
122 | ss.ss_flags = 0; | ||
123 | if (sigaltstack(&ss, &oss) < 0) | ||
124 | { | ||
125 | DEBUGF("%s(): %s\n", __func__, strerror(errno)); | ||
126 | return false; | ||
127 | } | ||
128 | |||
129 | /* | ||
130 | * Now transfer control onto the signal stack and set it up. | ||
131 | * It will return immediately via "return" after the setjmp() | ||
132 | * was performed. Be careful here with race conditions. The | ||
133 | * signal can be delivered the first time sigsuspend() is | ||
134 | * called. | ||
135 | */ | ||
136 | sig_handler_called = false; | ||
137 | main_thread = pthread_self(); | ||
138 | sigfillset(&sigs); | ||
139 | sigdelset(&sigs, trampoline_sig); | ||
140 | pthread_kill(main_thread, trampoline_sig); | ||
141 | while(!sig_handler_called) | ||
142 | sigsuspend(&sigs); | ||
143 | |||
144 | /* | ||
145 | * Inform the system that we are back off the signal stack by | ||
146 | * removing the alternative signal stack. Be careful here: It | ||
147 | * first has to be disabled, before it can be removed. | ||
148 | */ | ||
149 | sigaltstack(NULL, &ss); | ||
150 | ss.ss_flags = SS_DISABLE; | ||
151 | if (sigaltstack(&ss, NULL) < 0) | ||
152 | { | ||
153 | DEBUGF("%s(): %s\n", __func__, strerror(errno)); | ||
154 | return false; | ||
155 | } | ||
156 | sigaltstack(NULL, &ss); | ||
157 | if (!(ss.ss_flags & SS_DISABLE)) | ||
158 | { | ||
159 | DEBUGF("%s(): %s\n", __func__, strerror(errno)); | ||
160 | return false; | ||
161 | } | ||
162 | if (!(oss.ss_flags & SS_DISABLE)) | ||
163 | sigaltstack(&oss, NULL); | ||
164 | |||
165 | /* | ||
166 | * Restore the old trampoline_sig signal handler and mask | ||
167 | */ | ||
168 | sigaction(trampoline_sig, &osa, NULL); | ||
169 | sigprocmask(SIG_SETMASK, &osigs, NULL); | ||
170 | |||
171 | /* | ||
172 | * Tell the trampoline and bootstrap function where to dump | ||
173 | * the new machine context, and what to do afterwards... | ||
174 | */ | ||
175 | thread_func = f; | ||
176 | thread_context = ctx; | ||
177 | |||
178 | /* | ||
179 | * Now enter the trampoline again, but this time not as a signal | ||
180 | * handler. Instead we jump into it directly. The functionally | ||
181 | * redundant ping-pong pointer arithmentic is neccessary to avoid | ||
182 | * type-conversion warnings related to the `volatile' qualifier and | ||
183 | * the fact that `jmp_buf' usually is an array type. | ||
184 | */ | ||
185 | if (setjmp(*((jmp_buf *)&bootstrap_buf)) == 0) | ||
186 | longjmp(*((jmp_buf *)&tramp_buf), 1); | ||
187 | |||
188 | /* | ||
189 | * Ok, we returned again, so now we're finished | ||
190 | */ | ||
191 | enable_irq(); | ||
192 | return true; | ||
193 | } | ||
194 | |||
195 | static void trampoline(int sig) | ||
196 | { | ||
197 | (void)sig; | ||
198 | /* sanity check, no other thread should be here */ | ||
199 | if (pthread_self() != main_thread) | ||
200 | return; | ||
201 | |||
202 | if (setjmp(*((jmp_buf *)&tramp_buf)) == 0) | ||
203 | { | ||
204 | sig_handler_called = true; | ||
205 | return; | ||
206 | } | ||
207 | /* longjump'd back in */ | ||
208 | bootstrap_context(); | ||
209 | } | ||
210 | |||
211 | void bootstrap_context(void) | ||
212 | { | ||
213 | /* copy to local storage so we can spawn further threads | ||
214 | * in the meantime */ | ||
215 | void (*thread_entry)(void) = thread_func; | ||
216 | struct ctx *t = thread_context; | ||
217 | |||
218 | /* | ||
219 | * Save current machine state (on new stack) and | ||
220 | * go back to caller until we're scheduled for real... | ||
221 | */ | ||
222 | if (setjmp(t->thread_buf) == 0) | ||
223 | longjmp(*((jmp_buf *)&bootstrap_buf), 1); | ||
224 | |||
225 | /* | ||
226 | * The new thread is now running: GREAT! | ||
227 | * Now we just invoke its init function.... | ||
228 | */ | ||
229 | thread_entry(); | ||
230 | DEBUGF("thread left\n"); | ||
231 | thread_exit(); | ||
232 | } | ||
233 | |||
234 | static inline void set_context(struct ctx *c) | ||
235 | { | ||
236 | longjmp(c->thread_buf, 1); | ||
237 | } | ||
238 | |||
239 | static inline void swap_context(struct ctx *old, struct ctx *new) | ||
240 | { | ||
241 | if (setjmp(old->thread_buf) == 0) | ||
242 | longjmp(new->thread_buf, 1); | ||
243 | } | ||
244 | |||
245 | static inline void get_context(struct ctx *c) | ||
246 | { | ||
247 | setjmp(c->thread_buf); | ||
248 | } | ||
249 | |||
250 | |||
251 | static void setup_thread(struct regs *context); | ||
252 | |||
253 | #define INIT_MAIN_THREAD | ||
254 | static void init_main_thread(void *addr) | ||
255 | { | ||
256 | /* get a context for the main thread so that we can jump to it from | ||
257 | * other threads */ | ||
258 | struct regs *context = (struct regs*)addr; | ||
259 | context->uc = &thread_bufs[curr_uc++]; | ||
260 | get_context(context->uc); | ||
261 | } | ||
262 | |||
263 | #define THREAD_STARTUP_INIT(core, thread, function) \ | ||
264 | ({ (thread)->context.stack_size = (thread)->stack_size, \ | ||
265 | (thread)->context.stack = (uintptr_t)(thread)->stack; \ | ||
266 | (thread)->context.start = function; }) | ||
267 | |||
268 | |||
269 | |||
270 | /* | ||
271 | * Prepare context to make the thread runnable by calling swapcontext on it | ||
272 | */ | ||
273 | static void setup_thread(struct regs *context) | ||
274 | { | ||
275 | void (*fn)(void) = context->start; | ||
276 | context->uc = &thread_bufs[curr_uc++]; | ||
277 | while (!make_context(context->uc, fn, (char*)context->stack, context->stack_size)) | ||
278 | DEBUGF("Thread creation failed. Retrying"); | ||
279 | } | ||
280 | |||
281 | |||
282 | /* | ||
283 | * Save the ucontext_t pointer for later use in swapcontext() | ||
284 | * | ||
285 | * Cannot do getcontext() here, because jumping back to the context | ||
286 | * resumes after the getcontext call (i.e. store_context), but we need | ||
287 | * to resume from load_context() | ||
288 | */ | ||
289 | static inline void store_context(void* addr) | ||
290 | { | ||
291 | struct regs *r = (struct regs*)addr; | ||
292 | target_context = r->uc; | ||
293 | } | ||
294 | |||
295 | /* | ||
296 | * Perform context switch | ||
297 | */ | ||
298 | static inline void load_context(const void* addr) | ||
299 | { | ||
300 | struct regs *r = (struct regs*)addr; | ||
301 | if (UNLIKELY(r->start)) | ||
302 | { | ||
303 | setup_thread(r); | ||
304 | r->start = NULL; | ||
305 | } | ||
306 | swap_context(target_context, r->uc); | ||
307 | } | ||
diff --git a/firmware/asm/thread-win32.c b/firmware/asm/thread-win32.c new file mode 100644 index 0000000000..9125819ade --- /dev/null +++ b/firmware/asm/thread-win32.c | |||
@@ -0,0 +1,76 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2010 by Thomas Martitz | ||
11 | * | ||
12 | * Generic ARM threading support | ||
13 | * | ||
14 | * This program is free software; you can redistribute it and/or | ||
15 | * modify it under the terms of the GNU General Public License | ||
16 | * as published by the Free Software Foundation; either version 2 | ||
17 | * of the License, or (at your option) any later version. | ||
18 | * | ||
19 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
20 | * KIND, either express or implied. | ||
21 | * | ||
22 | ****************************************************************************/ | ||
23 | |||
24 | |||
25 | #include <windows.h> | ||
26 | #include "system.h" | ||
27 | |||
28 | #define INIT_MAIN_THREAD | ||
29 | |||
30 | #define THREAD_STARTUP_INIT(core, thread, function) \ | ||
31 | ({ (thread)->context.stack_size = (thread)->stack_size, \ | ||
32 | (thread)->context.stack = (uintptr_t)(thread)->stack; \ | ||
33 | (thread)->context.start = function; }) | ||
34 | |||
35 | static void init_main_thread(void *addr) | ||
36 | { | ||
37 | struct regs *context = (struct regs*)addr; | ||
38 | /* we must convert the current main thread to a fiber to be able to | ||
39 | * schedule other fibers */ | ||
40 | context->uc = ConvertThreadToFiber(NULL); | ||
41 | context->stack_size = 0; | ||
42 | } | ||
43 | |||
44 | static inline void store_context(void* addr) | ||
45 | { | ||
46 | (void)addr; | ||
47 | /* nothing to do here, Fibers continue after the SwitchToFiber call */ | ||
48 | } | ||
49 | |||
50 | static void start_thread(void) | ||
51 | { | ||
52 | void (*func)(void) = GetFiberData(); | ||
53 | func(); | ||
54 | /* go out if thread function returns */ | ||
55 | thread_exit(); | ||
56 | } | ||
57 | |||
58 | /* | ||
59 | * Load context and run it | ||
60 | * | ||
61 | * Resume execution from the last load_context call for the thread | ||
62 | */ | ||
63 | |||
64 | static inline void load_context(const void* addr) | ||
65 | { | ||
66 | struct regs *context = (struct regs*)addr; | ||
67 | if (UNLIKELY(context->start)) | ||
68 | { /* need setup before switching to it */ | ||
69 | context->uc = CreateFiber(context->stack_size, | ||
70 | (LPFIBER_START_ROUTINE)start_thread, context->start); | ||
71 | /* can't assign stack pointer, only stack size */ | ||
72 | context->stack_size = 0; | ||
73 | context->start = NULL; | ||
74 | } | ||
75 | SwitchToFiber(context->uc); | ||
76 | } | ||
diff --git a/firmware/asm/thread.c b/firmware/asm/thread.c new file mode 100644 index 0000000000..49e71d73af --- /dev/null +++ b/firmware/asm/thread.c | |||
@@ -0,0 +1,21 @@ | |||
1 | #if defined(CPU_ARM) | ||
2 | #include "arm/thread.c" | ||
3 | #elif defined(CPU_COLDFIRE) | ||
4 | #include "m68k/thread.c" | ||
5 | #elif CONFIG_CPU == SH7034 | ||
6 | #include "sh/thread.c" | ||
7 | #elif defined(CPU_MIPS) | ||
8 | #include "mips/thread.c" | ||
9 | #else | ||
10 | |||
11 | /* generic thread.c */ | ||
12 | |||
13 | #if defined(HAVE_WIN32_FIBER_THREADS) | ||
14 | #include "thread-win32.c" | ||
15 | #elif defined(HAVE_SIGALTSTACK_THREADS) | ||
16 | #include "thread-unix.c" | ||
17 | #else | ||
18 | #error Missing thread impl | ||
19 | #endif | ||
20 | |||
21 | #endif | ||
diff --git a/firmware/asm/thread.h b/firmware/asm/thread.h new file mode 100644 index 0000000000..9bdff3881e --- /dev/null +++ b/firmware/asm/thread.h | |||
@@ -0,0 +1,57 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2002 by Ulf Ralberg | ||
11 | * | ||
12 | * This program is free software; you can redistribute it and/or | ||
13 | * modify it under the terms of the GNU General Public License | ||
14 | * as published by the Free Software Foundation; either version 2 | ||
15 | * of the License, or (at your option) any later version. | ||
16 | * | ||
17 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
18 | * KIND, either express or implied. | ||
19 | * | ||
20 | ****************************************************************************/ | ||
21 | |||
22 | #ifndef __ASM_THREAD_H__ | ||
23 | #define __ASM_THREAD_H__ | ||
24 | #include "config.h" | ||
25 | |||
26 | #if defined(CPU_ARM) | ||
27 | #include "arm/thread.h" | ||
28 | #elif defined(CPU_COLDFIRE) | ||
29 | #include "m68k/thread.h" | ||
30 | #elif CONFIG_CPU == SH7034 | ||
31 | #include "sh/thread.h" | ||
32 | #elif defined(CPU_MIPS) | ||
33 | #include "mips/thread.h" | ||
34 | #else | ||
35 | |||
36 | /* generic thread.h */ | ||
37 | |||
38 | struct regs | ||
39 | { | ||
40 | void (*start)(void); /* thread's entry point, or NULL when started */ | ||
41 | void* uc; /* host thread handle */ | ||
42 | uintptr_t sp; /* Stack pointer, unused */ | ||
43 | size_t stack_size; /* stack size, not always used */ | ||
44 | uintptr_t stack; /* pointer to start of the stack buffer */ | ||
45 | }; | ||
46 | |||
47 | #ifdef HAVE_SIGALTSTACK_THREADS | ||
48 | #include <signal.h> | ||
49 | /* MINSIGSTKSZ for the OS to deliver the signal + 0x3000 for us */ | ||
50 | #define DEFAULT_STACK_SIZE (MINSIGSTKSZ+0x3000) /* Bytes */ | ||
51 | #elif defined(HAVE_WIN32_FIBER_THREADS) | ||
52 | #define DEFAULT_STACK_SIZE 0x1000 /* Bytes */ | ||
53 | #endif | ||
54 | |||
55 | #endif /* __ASM_THREAD_H__ */ | ||
56 | |||
57 | #endif | ||