1 | /* |
1 | /* |
2 | * Copyright (c) 2001-2011 Marc Alexander Lehmann <schmorp@schmorp.de> |
2 | * Copyright (c) 2001-2011 Marc Alexander Lehmann <schmorp@schmorp.de> |
3 | * |
3 | * |
4 | * Redistribution and use in source and binary forms, with or without modifica- |
4 | * Redistribution and use in source and binary forms, with or without modifica- |
5 | * tion, are permitted provided that the following conditions are met: |
5 | * tion, are permitted provided that the following conditions are met: |
6 | * |
6 | * |
7 | * 1. Redistributions of source code must retain the above copyright notice, |
7 | * 1. Redistributions of source code must retain the above copyright notice, |
8 | * this list of conditions and the following disclaimer. |
8 | * this list of conditions and the following disclaimer. |
9 | * |
9 | * |
10 | * 2. Redistributions in binary form must reproduce the above copyright |
10 | * 2. Redistributions in binary form must reproduce the above copyright |
11 | * notice, this list of conditions and the following disclaimer in the |
11 | * notice, this list of conditions and the following disclaimer in the |
12 | * documentation and/or other materials provided with the distribution. |
12 | * documentation and/or other materials provided with the distribution. |
13 | * |
13 | * |
14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
15 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
15 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
16 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
16 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
17 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
17 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
18 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
18 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
… | |
… | |
86 | volatile coro_func func = coro_init_func; |
86 | volatile coro_func func = coro_init_func; |
87 | volatile void *arg = coro_init_arg; |
87 | volatile void *arg = coro_init_arg; |
88 | |
88 | |
89 | coro_transfer (new_coro, create_coro); |
89 | coro_transfer (new_coro, create_coro); |
90 | |
90 | |
91 | #if __linux && __amd64 |
91 | #if __GCC_HAVE_DWARF2_CFI_ASM && __amd64 |
92 | /* we blindly assume on any __linux with __amd64 we have a new enough gas with .cfi_undefined support */ |
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93 | asm (".cfi_undefined rip"); |
92 | asm (".cfi_undefined rip"); |
94 | #endif |
93 | #endif |
95 | |
94 | |
96 | func ((void *)arg); |
95 | func ((void *)arg); |
97 | |
96 | |
… | |
… | |
115 | |
114 | |
116 | # endif |
115 | # endif |
117 | |
116 | |
118 | # if CORO_ASM |
117 | # if CORO_ASM |
119 | |
118 | |
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119 | #if _WIN32 || __CYGWIN__ |
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120 | #define CORO_WIN_TIB 1 |
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121 | #endif |
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122 | |
120 | asm ( |
123 | asm ( |
121 | ".text\n" |
124 | "\t.text\n" |
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125 | #if _WIN32 || __CYGWIN__ |
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126 | "\t.globl _coro_transfer\n" |
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127 | "_coro_transfer:\n" |
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128 | #else |
122 | ".globl coro_transfer\n" |
129 | "\t.globl coro_transfer\n" |
123 | ".type coro_transfer, @function\n" |
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124 | "coro_transfer:\n" |
130 | "coro_transfer:\n" |
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131 | #endif |
125 | /* windows, of course, gives a shit on the amd64 ABI and uses different registers */ |
132 | /* windows, of course, gives a shit on the amd64 ABI and uses different registers */ |
126 | /* http://blogs.msdn.com/freik/archive/2005/03/17/398200.aspx */ |
133 | /* http://blogs.msdn.com/freik/archive/2005/03/17/398200.aspx */ |
127 | #if __amd64 |
134 | #if __amd64 |
128 | #ifdef _WIN32 |
135 | |
129 | /* TODO: xmm6..15 also would need to be saved. sigh. */ |
136 | #if _WIN32 || __CYGWIN__ |
130 | #define NUM_SAVED 8 |
137 | #define NUM_SAVED 29 |
131 | #undef CORO_WIN_TIB |
138 | "\tsubq $168, %rsp\t" /* one dummy qword to improve alignment */ |
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139 | "\tmovaps %xmm6, (%rsp)\n" |
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140 | "\tmovaps %xmm7, 16(%rsp)\n" |
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141 | "\tmovaps %xmm8, 32(%rsp)\n" |
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142 | "\tmovaps %xmm9, 48(%rsp)\n" |
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143 | "\tmovaps %xmm10, 64(%rsp)\n" |
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144 | "\tmovaps %xmm11, 80(%rsp)\n" |
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145 | "\tmovaps %xmm12, 96(%rsp)\n" |
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146 | "\tmovaps %xmm13, 112(%rsp)\n" |
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147 | "\tmovaps %xmm14, 128(%rsp)\n" |
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148 | "\tmovaps %xmm15, 144(%rsp)\n" |
132 | "\tpushq %rsi\n" |
149 | "\tpushq %rsi\n" |
133 | "\tpushq %rdi\n" |
150 | "\tpushq %rdi\n" |
134 | "\tpushq %rbp\n" |
151 | "\tpushq %rbp\n" |
135 | "\tpushq %rbx\n" |
152 | "\tpushq %rbx\n" |
136 | "\tpushq %r12\n" |
153 | "\tpushq %r12\n" |
137 | "\tpushq %r13\n" |
154 | "\tpushq %r13\n" |
138 | "\tpushq %r14\n" |
155 | "\tpushq %r14\n" |
139 | "\tpushq %r15\n" |
156 | "\tpushq %r15\n" |
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157 | #if CORO_WIN_TIB |
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158 | "\tpushq %fs:0x0\n" |
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159 | "\tpushq %fs:0x8\n" |
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160 | "\tpushq %fs:0xc\n" |
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161 | #endif |
140 | "\tmovq %rsp, (%rcx)\n" |
162 | "\tmovq %rsp, (%rcx)\n" |
141 | "\tmovq (%rdx), %rsp\n" |
163 | "\tmovq (%rdx), %rsp\n" |
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164 | #if CORO_WIN_TIB |
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165 | "\tpopq %fs:0xc\n" |
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166 | "\tpopq %fs:0x8\n" |
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167 | "\tpopq %fs:0x0\n" |
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168 | #endif |
142 | "\tpopq %r15\n" |
169 | "\tpopq %r15\n" |
143 | "\tpopq %r14\n" |
170 | "\tpopq %r14\n" |
144 | "\tpopq %r13\n" |
171 | "\tpopq %r13\n" |
145 | "\tpopq %r12\n" |
172 | "\tpopq %r12\n" |
146 | "\tpopq %rbx\n" |
173 | "\tpopq %rbx\n" |
147 | "\tpopq %rbp\n" |
174 | "\tpopq %rbp\n" |
148 | "\tpopq %rdi\n" |
175 | "\tpopq %rdi\n" |
149 | "\tpopq %rsi\n" |
176 | "\tpopq %rsi\n" |
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177 | "\tmovaps (%rsp), %xmm6\n" |
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178 | "\tmovaps 16(%rsp), %xmm7\n" |
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179 | "\tmovaps 32(%rsp), %xmm8\n" |
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180 | "\tmovaps 48(%rsp), %xmm9\n" |
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181 | "\tmovaps 64(%rsp), %xmm10\n" |
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182 | "\tmovaps 80(%rsp), %xmm11\n" |
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183 | "\tmovaps 96(%rsp), %xmm12\n" |
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184 | "\tmovaps 112(%rsp), %xmm13\n" |
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185 | "\tmovaps 128(%rsp), %xmm14\n" |
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186 | "\tmovaps 144(%rsp), %xmm15\n" |
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187 | "\taddq $168, %rsp\n" |
150 | #else |
188 | #else |
151 | #define NUM_SAVED 6 |
189 | #define NUM_SAVED 6 |
152 | "\tpushq %rbp\n" |
190 | "\tpushq %rbp\n" |
153 | "\tpushq %rbx\n" |
191 | "\tpushq %rbx\n" |
154 | "\tpushq %r12\n" |
192 | "\tpushq %r12\n" |
… | |
… | |
162 | "\tpopq %r13\n" |
200 | "\tpopq %r13\n" |
163 | "\tpopq %r12\n" |
201 | "\tpopq %r12\n" |
164 | "\tpopq %rbx\n" |
202 | "\tpopq %rbx\n" |
165 | "\tpopq %rbp\n" |
203 | "\tpopq %rbp\n" |
166 | #endif |
204 | #endif |
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205 | "\tpopq %rcx\n" |
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206 | "\tjmpq *%rcx\n" |
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207 | |
167 | #elif __i386 |
208 | #elif __i386 |
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209 | |
168 | #define NUM_SAVED 4 |
210 | #define NUM_SAVED 4 |
169 | "\tpushl %ebp\n" |
211 | "\tpushl %ebp\n" |
170 | "\tpushl %ebx\n" |
212 | "\tpushl %ebx\n" |
171 | "\tpushl %esi\n" |
213 | "\tpushl %esi\n" |
172 | "\tpushl %edi\n" |
214 | "\tpushl %edi\n" |
173 | #if CORO_WIN_TIB |
215 | #if CORO_WIN_TIB |
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216 | #undef NUM_SAVED |
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217 | #define NUM_SAVED 7 |
174 | "\tpushl %fs:0\n" |
218 | "\tpushl %fs:0\n" |
175 | "\tpushl %fs:4\n" |
219 | "\tpushl %fs:4\n" |
176 | "\tpushl %fs:8\n" |
220 | "\tpushl %fs:8\n" |
177 | #endif |
221 | #endif |
178 | "\tmovl %esp, (%eax)\n" |
222 | "\tmovl %esp, (%eax)\n" |
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184 | #endif |
228 | #endif |
185 | "\tpopl %edi\n" |
229 | "\tpopl %edi\n" |
186 | "\tpopl %esi\n" |
230 | "\tpopl %esi\n" |
187 | "\tpopl %ebx\n" |
231 | "\tpopl %ebx\n" |
188 | "\tpopl %ebp\n" |
232 | "\tpopl %ebp\n" |
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233 | "\tpopl %ecx\n" |
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234 | "\tjmpl *%ecx\n" |
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235 | |
189 | #else |
236 | #else |
190 | #error unsupported architecture |
237 | #error unsupported architecture |
191 | #endif |
238 | #endif |
192 | "\tret\n" |
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193 | ); |
239 | ); |
194 | |
240 | |
195 | # endif |
241 | # endif |
196 | |
242 | |
197 | void |
243 | void |
… | |
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270 | ctx->env[8] = (long) coro_init; |
316 | ctx->env[8] = (long) coro_init; |
271 | ctx->env[7] = (long) ((char *)sptr + ssize) - sizeof (long); |
317 | ctx->env[7] = (long) ((char *)sptr + ssize) - sizeof (long); |
272 | #elif __CYGWIN__ && __x86_64 |
318 | #elif __CYGWIN__ && __x86_64 |
273 | ctx->env[7] = (long) coro_init; |
319 | ctx->env[7] = (long) coro_init; |
274 | ctx->env[6] = (long) ((char *)sptr + ssize) - sizeof (long); |
320 | ctx->env[6] = (long) ((char *)sptr + ssize) - sizeof (long); |
275 | #elif defined(__MINGW32__) |
321 | #elif defined __MINGW32__ |
276 | ctx->env[5] = (long) coro_init; |
322 | ctx->env[5] = (long) coro_init; |
277 | ctx->env[4] = (long) ((char *)sptr + ssize) - sizeof (long); |
323 | ctx->env[4] = (long) ((char *)sptr + ssize) - sizeof (long); |
278 | #elif defined(_M_IX86) |
324 | #elif defined _M_IX86 |
279 | ((_JUMP_BUFFER *)&ctx->env)->Eip = (long) coro_init; |
325 | ((_JUMP_BUFFER *)&ctx->env)->Eip = (long) coro_init; |
280 | ((_JUMP_BUFFER *)&ctx->env)->Esp = (long) STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
326 | ((_JUMP_BUFFER *)&ctx->env)->Esp = (long) STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
281 | #elif defined(_M_AMD64) |
327 | #elif defined _M_AMD64 |
282 | ((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64) coro_init; |
328 | ((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64) coro_init; |
283 | ((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64) STACK_ADJUST_PTR (sptr, ssize) - sizeof (__int64); |
329 | ((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64) STACK_ADJUST_PTR (sptr, ssize) - sizeof (__int64); |
284 | #elif defined(_M_IA64) |
330 | #elif defined _M_IA64 |
285 | ((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64) coro_init; |
331 | ((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64) coro_init; |
286 | ((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64) STACK_ADJUST_PTR (sptr, ssize) - sizeof (__int64); |
332 | ((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64) STACK_ADJUST_PTR (sptr, ssize) - sizeof (__int64); |
287 | #else |
333 | #else |
288 | #error "microsoft libc or architecture not supported" |
334 | #error "microsoft libc or architecture not supported" |
289 | #endif |
335 | #endif |
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425 | |
471 | |
426 | pthread_attr_init (&attr); |
472 | pthread_attr_init (&attr); |
427 | #if __UCLIBC__ |
473 | #if __UCLIBC__ |
428 | /* exists, but is borked */ |
474 | /* exists, but is borked */ |
429 | /*pthread_attr_setstacksize (&attr, (size_t)ssize);*/ |
475 | /*pthread_attr_setstacksize (&attr, (size_t)ssize);*/ |
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476 | #elif __CYGWIN__ |
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477 | /* POSIX, not here */ |
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478 | pthread_attr_setstacksize (&attr, (size_t)ssize); |
430 | #else |
479 | #else |
431 | pthread_attr_setstack (&attr, sptr, (size_t)ssize); |
480 | pthread_attr_setstack (&attr, sptr, (size_t)ssize); |
432 | #endif |
481 | #endif |
433 | pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS); |
482 | pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS); |
434 | pthread_create (&ctx->id, &attr, coro_init, &args); |
483 | pthread_create (&ctx->id, &attr, coro_init, &args); |
… | |
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451 | } |
500 | } |
452 | |
501 | |
453 | pthread_cond_destroy (&ctx->cv); |
502 | pthread_cond_destroy (&ctx->cv); |
454 | } |
503 | } |
455 | |
504 | |
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505 | /*****************************************************************************/ |
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506 | /* fiber backend */ |
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507 | /*****************************************************************************/ |
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508 | #elif CORO_FIBER |
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509 | |
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510 | #define WIN32_LEAN_AND_MEAN |
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511 | #include <windows.h> |
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512 | |
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513 | VOID CALLBACK |
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514 | coro_init (PVOID arg) |
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515 | { |
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516 | coro_context *ctx = (coro_context *)arg; |
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517 | |
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518 | ctx->coro (ctx->arg); |
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519 | } |
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520 | |
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521 | void |
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522 | coro_transfer (coro_context *prev, coro_context *next) |
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523 | { |
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524 | if (!prev->fiber) |
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525 | { |
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526 | prev->fiber = GetCurrentFiber (); |
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527 | |
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528 | if (prev->fiber == 0 || prev->fiber == (void *)0x1e00) |
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529 | prev->fiber = ConvertThreadToFiber (0); |
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530 | } |
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531 | |
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532 | SwitchToFiber (next->fiber); |
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533 | } |
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534 | |
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535 | void |
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536 | coro_create (coro_context *ctx, coro_func coro, void *arg, void *sptr, long ssize) |
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537 | { |
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538 | ctx->fiber = 0; |
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539 | ctx->coro = coro; |
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540 | ctx->arg = arg; |
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541 | |
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542 | if (!coro) |
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543 | return; |
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544 | |
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545 | ctx->fiber = CreateFiber (ssize, coro_init, ctx); |
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546 | } |
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547 | |
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548 | void |
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549 | coro_destroy (coro_context *ctx) |
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550 | { |
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551 | DeleteFiber (ctx->fiber); |
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552 | } |
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553 | |
456 | #else |
554 | #else |
457 | # error unsupported backend |
555 | # error unsupported backend |
458 | #endif |
556 | #endif |
459 | |
557 | |