1 | /* |
1 | /* |
2 | * Copyright (c) 2001-2008 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, |
… | |
… | |
38 | * go to Ralf S. Engelschall <rse@engelschall.com>. |
38 | * go to Ralf S. Engelschall <rse@engelschall.com>. |
39 | */ |
39 | */ |
40 | |
40 | |
41 | #include "coro.h" |
41 | #include "coro.h" |
42 | |
42 | |
|
|
43 | #include <stddef.h> |
43 | #include <string.h> |
44 | #include <string.h> |
44 | |
45 | |
45 | /*****************************************************************************/ |
46 | /*****************************************************************************/ |
46 | /* ucontext/setjmp/asm backends */ |
47 | /* ucontext/setjmp/asm backends */ |
47 | /*****************************************************************************/ |
48 | /*****************************************************************************/ |
… | |
… | |
86 | volatile coro_func func = coro_init_func; |
87 | volatile coro_func func = coro_init_func; |
87 | volatile void *arg = coro_init_arg; |
88 | volatile void *arg = coro_init_arg; |
88 | |
89 | |
89 | coro_transfer (new_coro, create_coro); |
90 | coro_transfer (new_coro, create_coro); |
90 | |
91 | |
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|
92 | #if __GCC_HAVE_DWARF2_CFI_ASM && __amd64 |
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93 | /*asm (".cfi_startproc");*/ |
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94 | /*asm (".cfi_undefined rip");*/ |
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95 | #endif |
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96 | |
91 | func ((void *)arg); |
97 | func ((void *)arg); |
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98 | |
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99 | #if __GCC_HAVE_DWARF2_CFI_ASM && __amd64 |
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100 | /*asm (".cfi_endproc");*/ |
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101 | #endif |
92 | |
102 | |
93 | /* the new coro returned. bad. just abort() for now */ |
103 | /* the new coro returned. bad. just abort() for now */ |
94 | abort (); |
104 | abort (); |
95 | } |
105 | } |
96 | |
106 | |
… | |
… | |
100 | |
110 | |
101 | /* trampoline signal handler */ |
111 | /* trampoline signal handler */ |
102 | static void |
112 | static void |
103 | trampoline (int sig) |
113 | trampoline (int sig) |
104 | { |
114 | { |
105 | if ( |
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|
106 | #if _XOPEN_UNIX > 0 |
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107 | _setjmp (new_coro->env) |
115 | if (coro_setjmp (new_coro->env)) |
108 | #else |
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109 | sigsetjmp (new_coro->env, 0) |
|
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110 | #endif |
|
|
111 | ) { |
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112 | coro_init (); /* start it */ |
116 | coro_init (); /* start it */ |
113 | } |
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|
114 | else |
117 | else |
115 | trampoline_done = 1; |
118 | trampoline_done = 1; |
116 | } |
119 | } |
117 | |
120 | |
118 | # endif |
121 | # endif |
119 | |
122 | |
120 | # if CORO_ASM |
123 | # if CORO_ASM |
121 | |
124 | |
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|
125 | #if __arm__ && \ |
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126 | (defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
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127 | || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__ \ |
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128 | || __ARM_ARCH == 7) |
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129 | #define CORO_ARM 1 |
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|
130 | #endif |
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131 | |
|
|
132 | #if _WIN32 || __CYGWIN__ |
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133 | #define CORO_WIN_TIB 1 |
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|
134 | #endif |
|
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135 | |
122 | asm ( |
136 | asm ( |
123 | ".text\n" |
137 | "\t.text\n" |
|
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138 | #if _WIN32 || __CYGWIN__ |
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|
139 | "\t.globl _coro_transfer\n" |
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140 | "_coro_transfer:\n" |
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141 | #else |
124 | ".globl coro_transfer\n" |
142 | "\t.globl coro_transfer\n" |
125 | ".type coro_transfer, @function\n" |
|
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126 | "coro_transfer:\n" |
143 | "coro_transfer:\n" |
|
|
144 | #endif |
|
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145 | /* windows, of course, gives a shit on the amd64 ABI and uses different registers */ |
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146 | /* http://blogs.msdn.com/freik/archive/2005/03/17/398200.aspx */ |
127 | #if __amd64 |
147 | #if __amd64 |
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148 | |
|
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149 | #if _WIN32 || __CYGWIN__ |
|
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150 | #define NUM_SAVED 29 |
|
|
151 | "\tsubq $168, %rsp\t" /* one dummy qword to improve alignment */ |
|
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152 | "\tmovaps %xmm6, (%rsp)\n" |
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153 | "\tmovaps %xmm7, 16(%rsp)\n" |
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154 | "\tmovaps %xmm8, 32(%rsp)\n" |
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155 | "\tmovaps %xmm9, 48(%rsp)\n" |
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156 | "\tmovaps %xmm10, 64(%rsp)\n" |
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157 | "\tmovaps %xmm11, 80(%rsp)\n" |
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158 | "\tmovaps %xmm12, 96(%rsp)\n" |
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159 | "\tmovaps %xmm13, 112(%rsp)\n" |
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160 | "\tmovaps %xmm14, 128(%rsp)\n" |
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161 | "\tmovaps %xmm15, 144(%rsp)\n" |
|
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162 | "\tpushq %rsi\n" |
|
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163 | "\tpushq %rdi\n" |
|
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164 | "\tpushq %rbp\n" |
|
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165 | "\tpushq %rbx\n" |
|
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166 | "\tpushq %r12\n" |
|
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167 | "\tpushq %r13\n" |
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168 | "\tpushq %r14\n" |
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169 | "\tpushq %r15\n" |
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170 | #if CORO_WIN_TIB |
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171 | "\tpushq %fs:0x0\n" |
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172 | "\tpushq %fs:0x8\n" |
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173 | "\tpushq %fs:0xc\n" |
|
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174 | #endif |
|
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175 | "\tmovq %rsp, (%rcx)\n" |
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176 | "\tmovq (%rdx), %rsp\n" |
|
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177 | #if CORO_WIN_TIB |
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178 | "\tpopq %fs:0xc\n" |
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179 | "\tpopq %fs:0x8\n" |
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180 | "\tpopq %fs:0x0\n" |
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181 | #endif |
|
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182 | "\tpopq %r15\n" |
|
|
183 | "\tpopq %r14\n" |
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184 | "\tpopq %r13\n" |
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185 | "\tpopq %r12\n" |
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186 | "\tpopq %rbx\n" |
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187 | "\tpopq %rbp\n" |
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188 | "\tpopq %rdi\n" |
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189 | "\tpopq %rsi\n" |
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190 | "\tmovaps (%rsp), %xmm6\n" |
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191 | "\tmovaps 16(%rsp), %xmm7\n" |
|
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192 | "\tmovaps 32(%rsp), %xmm8\n" |
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193 | "\tmovaps 48(%rsp), %xmm9\n" |
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194 | "\tmovaps 64(%rsp), %xmm10\n" |
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195 | "\tmovaps 80(%rsp), %xmm11\n" |
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196 | "\tmovaps 96(%rsp), %xmm12\n" |
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197 | "\tmovaps 112(%rsp), %xmm13\n" |
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198 | "\tmovaps 128(%rsp), %xmm14\n" |
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199 | "\tmovaps 144(%rsp), %xmm15\n" |
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200 | "\taddq $168, %rsp\n" |
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201 | #else |
128 | #define NUM_SAVED 6 |
202 | #define NUM_SAVED 6 |
129 | "\tpush %rbp\n" |
203 | "\tpushq %rbp\n" |
130 | "\tpush %rbx\n" |
204 | "\tpushq %rbx\n" |
131 | "\tpush %r12\n" |
205 | "\tpushq %r12\n" |
132 | "\tpush %r13\n" |
206 | "\tpushq %r13\n" |
133 | "\tpush %r14\n" |
207 | "\tpushq %r14\n" |
134 | "\tpush %r15\n" |
208 | "\tpushq %r15\n" |
135 | "\tmov %rsp, (%rdi)\n" |
209 | "\tmovq %rsp, (%rdi)\n" |
136 | "\tmov (%rsi), %rsp\n" |
210 | "\tmovq (%rsi), %rsp\n" |
137 | "\tpop %r15\n" |
211 | "\tpopq %r15\n" |
138 | "\tpop %r14\n" |
212 | "\tpopq %r14\n" |
139 | "\tpop %r13\n" |
213 | "\tpopq %r13\n" |
140 | "\tpop %r12\n" |
214 | "\tpopq %r12\n" |
141 | "\tpop %rbx\n" |
215 | "\tpopq %rbx\n" |
142 | "\tpop %rbp\n" |
216 | "\tpopq %rbp\n" |
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217 | #endif |
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218 | "\tpopq %rcx\n" |
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219 | "\tjmpq *%rcx\n" |
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220 | |
143 | #elif __i386 |
221 | #elif __i386__ |
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222 | |
144 | #define NUM_SAVED 4 |
223 | #define NUM_SAVED 4 |
145 | "\tpush %ebp\n" |
224 | "\tpushl %ebp\n" |
146 | "\tpush %ebx\n" |
225 | "\tpushl %ebx\n" |
147 | "\tpush %esi\n" |
226 | "\tpushl %esi\n" |
148 | "\tpush %edi\n" |
227 | "\tpushl %edi\n" |
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228 | #if CORO_WIN_TIB |
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229 | #undef NUM_SAVED |
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230 | #define NUM_SAVED 7 |
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231 | "\tpushl %fs:0\n" |
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232 | "\tpushl %fs:4\n" |
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233 | "\tpushl %fs:8\n" |
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234 | #endif |
149 | "\tmov %esp, (%eax)\n" |
235 | "\tmovl %esp, (%eax)\n" |
150 | "\tmov (%edx), %esp\n" |
236 | "\tmovl (%edx), %esp\n" |
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237 | #if CORO_WIN_TIB |
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238 | "\tpopl %fs:8\n" |
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239 | "\tpopl %fs:4\n" |
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240 | "\tpopl %fs:0\n" |
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241 | #endif |
151 | "\tpop %edi\n" |
242 | "\tpopl %edi\n" |
152 | "\tpop %esi\n" |
243 | "\tpopl %esi\n" |
153 | "\tpop %ebx\n" |
244 | "\tpopl %ebx\n" |
154 | "\tpop %ebp\n" |
245 | "\tpopl %ebp\n" |
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246 | "\tpopl %ecx\n" |
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247 | "\tjmpl *%ecx\n" |
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248 | |
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249 | #elif CORO_ARM /* untested, what about thumb, neon, iwmmxt? */ |
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250 | |
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251 | #if __ARM_PCS_VFP |
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252 | "\tvpush {d8-d15}\n" |
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253 | #define NUM_SAVED (9 + 8 * 2) |
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254 | #else |
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255 | #define NUM_SAVED 9 |
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256 | #endif |
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257 | "\tpush {r4-r11,lr}\n" |
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258 | "\tstr sp, [r0]\n" |
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259 | "\tldr sp, [r1]\n" |
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260 | "\tpop {r4-r11,lr}\n" |
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261 | #if __ARM_PCS_VFP |
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262 | "\tvpop {d8-d15}\n" |
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263 | #endif |
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264 | "\tmov r15, lr\n" |
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265 | |
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266 | #elif __mips__ && 0 /* untested, 32 bit only */ |
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267 | |
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268 | #define NUM_SAVED (12 + 8 * 2) |
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269 | /* TODO: n64/o64, lw=>ld */ |
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270 | |
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271 | "\t.set nomips16\n" |
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272 | "\t.frame $sp,112,$31\n" |
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273 | #if __mips_soft_float |
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274 | "\taddiu $sp,$sp,-44\n" |
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275 | #else |
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276 | "\taddiu $sp,$sp,-112\n" |
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277 | "\ts.d $f30,88($sp)\n" |
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278 | "\ts.d $f28,80($sp)\n" |
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279 | "\ts.d $f26,72($sp)\n" |
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280 | "\ts.d $f24,64($sp)\n" |
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281 | "\ts.d $f22,56($sp)\n" |
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282 | "\ts.d $f20,48($sp)\n" |
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283 | #endif |
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284 | "\tsw $28,40($sp)\n" |
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285 | "\tsw $31,36($sp)\n" |
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286 | "\tsw $fp,32($sp)\n" |
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287 | "\tsw $23,28($sp)\n" |
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288 | "\tsw $22,24($sp)\n" |
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289 | "\tsw $21,20($sp)\n" |
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290 | "\tsw $20,16($sp)\n" |
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291 | "\tsw $19,12($sp)\n" |
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292 | "\tsw $18,8($sp)\n" |
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293 | "\tsw $17,4($sp)\n" |
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294 | "\tsw $16,0($sp)\n" |
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295 | "\tsw $sp,0($4)\n" |
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296 | "\tlw $sp,0($5)\n" |
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297 | #if !__mips_soft_float |
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298 | "\tl.d $f30,88($sp)\n" |
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299 | "\tl.d $f28,80($sp)\n" |
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300 | "\tl.d $f26,72($sp)\n" |
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301 | "\tl.d $f24,64($sp)\n" |
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302 | "\tl.d $f22,56($sp)\n" |
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303 | "\tl.d $f20,48($sp)\n" |
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304 | #endif |
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305 | "\tlw $28,40($sp)\n" |
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306 | "\tlw $31,36($sp)\n" |
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307 | "\tlw $fp,32($sp)\n" |
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308 | "\tlw $23,28($sp)\n" |
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309 | "\tlw $22,24($sp)\n" |
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310 | "\tlw $21,20($sp)\n" |
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311 | "\tlw $20,16($sp)\n" |
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312 | "\tlw $19,12($sp)\n" |
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313 | "\tlw $18,8($sp)\n" |
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314 | "\tlw $17,4($sp)\n" |
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315 | "\tlw $16,0($sp)\n" |
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316 | "\tj $31\n" |
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317 | #if __mips_soft_float |
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318 | "\taddiu $sp,$sp,44\n" |
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319 | #else |
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320 | "\taddiu $sp,$sp,112\n" |
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321 | #endif |
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322 | |
155 | #else |
323 | #else |
156 | #error unsupported architecture |
324 | #error unsupported architecture |
157 | #endif |
325 | #endif |
158 | "\tret\n" |
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159 | ); |
326 | ); |
160 | |
327 | |
161 | # endif |
328 | # endif |
162 | |
329 | |
163 | void |
330 | void |
164 | coro_create (coro_context *ctx, coro_func coro, void *arg, void *sptr, long ssize) |
331 | coro_create (coro_context *ctx, coro_func coro, void *arg, void *sptr, size_t ssize) |
165 | { |
332 | { |
166 | coro_context nctx; |
333 | coro_context nctx; |
167 | # if CORO_SJLJ |
334 | # if CORO_SJLJ |
168 | stack_t ostk, nstk; |
335 | stack_t ostk, nstk; |
169 | struct sigaction osa, nsa; |
336 | struct sigaction osa, nsa; |
… | |
… | |
195 | perror ("sigaction"); |
362 | perror ("sigaction"); |
196 | abort (); |
363 | abort (); |
197 | } |
364 | } |
198 | |
365 | |
199 | /* set the new stack */ |
366 | /* set the new stack */ |
200 | nstk.ss_sp = STACK_ADJUST_PTR (sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */ |
367 | nstk.ss_sp = STACK_ADJUST_PTR (sptr, ssize); /* yes, some platforms (IRIX) get this wrong. */ |
201 | nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize); |
368 | nstk.ss_size = STACK_ADJUST_SIZE (sptr, ssize); |
202 | nstk.ss_flags = 0; |
369 | nstk.ss_flags = 0; |
203 | |
370 | |
204 | if (sigaltstack (&nstk, &ostk) < 0) |
371 | if (sigaltstack (&nstk, &ostk) < 0) |
205 | { |
372 | { |
206 | perror ("sigaltstack"); |
373 | perror ("sigaltstack"); |
… | |
… | |
229 | sigaction (SIGUSR2, &osa, 0); |
396 | sigaction (SIGUSR2, &osa, 0); |
230 | sigprocmask (SIG_SETMASK, &osig, 0); |
397 | sigprocmask (SIG_SETMASK, &osig, 0); |
231 | |
398 | |
232 | # elif CORO_LOSER |
399 | # elif CORO_LOSER |
233 | |
400 | |
234 | setjmp (ctx->env); |
401 | coro_setjmp (ctx->env); |
235 | #if __CYGWIN__ |
402 | #if __CYGWIN__ && __i386__ |
|
|
403 | ctx->env[8] = (long) coro_init; |
236 | ctx->env[7] = (long)((char *)sptr + ssize) - sizeof (long); |
404 | ctx->env[7] = (long) ((char *)sptr + ssize) - sizeof (long); |
237 | ctx->env[8] = (long)coro_init; |
405 | #elif __CYGWIN__ && __x86_64__ |
|
|
406 | ctx->env[7] = (long) coro_init; |
|
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407 | ctx->env[6] = (long) ((char *)sptr + ssize) - sizeof (long); |
|
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408 | #elif defined __MINGW32__ |
|
|
409 | ctx->env[5] = (long) coro_init; |
|
|
410 | ctx->env[4] = (long) ((char *)sptr + ssize) - sizeof (long); |
238 | #elif defined(_M_IX86) |
411 | #elif defined _M_IX86 |
239 | ((_JUMP_BUFFER *)&ctx->env)->Eip = (long)coro_init; |
412 | ((_JUMP_BUFFER *)&ctx->env)->Eip = (long) coro_init; |
240 | ((_JUMP_BUFFER *)&ctx->env)->Esp = (long)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
413 | ((_JUMP_BUFFER *)&ctx->env)->Esp = (long) STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
241 | #elif defined(_M_AMD64) |
414 | #elif defined _M_AMD64 |
242 | ((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64)coro_init; |
415 | ((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64) coro_init; |
243 | ((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
416 | ((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64) STACK_ADJUST_PTR (sptr, ssize) - sizeof (__int64); |
244 | #elif defined(_M_IA64) |
417 | #elif defined _M_IA64 |
245 | ((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64)coro_init; |
418 | ((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64) coro_init; |
246 | ((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
419 | ((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64) STACK_ADJUST_PTR (sptr, ssize) - sizeof (__int64); |
247 | #else |
420 | #else |
248 | #error "microsoft libc or architecture not supported" |
421 | #error "microsoft libc or architecture not supported" |
249 | #endif |
422 | #endif |
250 | |
423 | |
251 | # elif CORO_LINUX |
424 | # elif CORO_LINUX |
252 | |
425 | |
253 | _setjmp (ctx->env); |
426 | coro_setjmp (ctx->env); |
254 | #if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (JB_PC) && defined (JB_SP) |
427 | #if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (JB_PC) && defined (JB_SP) |
255 | ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init; |
428 | ctx->env[0].__jmpbuf[JB_PC] = (long) coro_init; |
256 | ctx->env[0].__jmpbuf[JB_SP] = (long)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
429 | ctx->env[0].__jmpbuf[JB_SP] = (long) STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
257 | #elif __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (__mc68000__) |
430 | #elif __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (__mc68000__) |
258 | ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init; |
431 | ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init; |
259 | ctx->env[0].__jmpbuf[0].__sp = (int *)((char *)sptr + ssize) - sizeof (long); |
432 | ctx->env[0].__jmpbuf[0].__sp = (int *) ((char *)sptr + ssize) - sizeof (long); |
260 | #elif defined (__GNU_LIBRARY__) && defined (__i386__) |
433 | #elif defined (__GNU_LIBRARY__) && defined (__i386__) |
261 | ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init; |
434 | ctx->env[0].__jmpbuf[0].__pc = (char *) coro_init; |
262 | ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize) - sizeof (long); |
435 | ctx->env[0].__jmpbuf[0].__sp = (void *) ((char *)sptr + ssize) - sizeof (long); |
263 | #elif defined (__GNU_LIBRARY__) && defined (__amd64__) |
436 | #elif defined (__GNU_LIBRARY__) && defined (__x86_64__) |
264 | ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init; |
437 | ctx->env[0].__jmpbuf[JB_PC] = (long) coro_init; |
265 | ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize) - sizeof (long); |
438 | ctx->env[0].__jmpbuf[0].__sp = (void *) ((char *)sptr + ssize) - sizeof (long); |
266 | #else |
439 | #else |
267 | #error "linux libc or architecture not supported" |
440 | #error "linux libc or architecture not supported" |
268 | #endif |
441 | #endif |
269 | |
442 | |
270 | # elif CORO_IRIX |
443 | # elif CORO_IRIX |
271 | |
444 | |
272 | sigsetjmp (ctx->env, 0); |
445 | coro_setjmp (ctx->env, 0); |
273 | ctx->env[JB_PC] = (__uint64_t)coro_init; |
446 | ctx->env[JB_PC] = (__uint64_t)coro_init; |
274 | ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
447 | ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
275 | |
448 | |
276 | # elif CORO_ASM |
449 | # elif CORO_ASM |
277 | |
450 | |
|
|
451 | #if __i386__ || __x86_64__ |
278 | ctx->sp = (void **)(ssize + (char *)sptr); |
452 | ctx->sp = (void **)(ssize + (char *)sptr); |
279 | *--ctx->sp = (void *)abort; /* needed for alignment only */ |
453 | *--ctx->sp = (void *)abort; /* needed for alignment only */ |
280 | *--ctx->sp = (void *)coro_init; |
454 | *--ctx->sp = (void *)coro_init; |
|
|
455 | #if CORO_WIN_TIB |
|
|
456 | *--ctx->sp = 0; /* ExceptionList */ |
|
|
457 | *--ctx->sp = (char *)sptr + ssize; /* StackBase */ |
|
|
458 | *--ctx->sp = sptr; /* StackLimit */ |
|
|
459 | #endif |
|
|
460 | #elif CORO_ARM |
|
|
461 | /* return address stored in lr register, don't push anything */ |
|
|
462 | #else |
|
|
463 | #error unsupported architecture |
|
|
464 | #endif |
|
|
465 | |
281 | ctx->sp -= NUM_SAVED; |
466 | ctx->sp -= NUM_SAVED; |
|
|
467 | memset (ctx->sp, 0, sizeof (*ctx->sp) * NUM_SAVED); |
|
|
468 | |
|
|
469 | #if __i386__ || __x86_64__ |
|
|
470 | /* done already */ |
|
|
471 | #elif CORO_ARM |
|
|
472 | ctx->sp[0] = coro; /* r4 */ |
|
|
473 | ctx->sp[1] = arg; /* r5 */ |
|
|
474 | ctx->sp[8] = (char *)coro_init; /* lr */ |
|
|
475 | #else |
|
|
476 | #error unsupported architecture |
|
|
477 | #endif |
282 | |
478 | |
283 | # elif CORO_UCONTEXT |
479 | # elif CORO_UCONTEXT |
284 | |
480 | |
285 | getcontext (&(ctx->uc)); |
481 | getcontext (&(ctx->uc)); |
286 | |
482 | |
… | |
… | |
341 | void |
537 | void |
342 | coro_transfer (coro_context *prev, coro_context *next) |
538 | coro_transfer (coro_context *prev, coro_context *next) |
343 | { |
539 | { |
344 | pthread_cond_signal (&next->cv); |
540 | pthread_cond_signal (&next->cv); |
345 | pthread_cond_wait (&prev->cv, &coro_mutex); |
541 | pthread_cond_wait (&prev->cv, &coro_mutex); |
|
|
542 | #if __FreeBSD__ /* freebsd is of course broken and needs manual testcancel calls... yay... */ |
|
|
543 | pthread_testcancel (); |
|
|
544 | #endif |
346 | } |
545 | } |
347 | |
546 | |
348 | void |
547 | void |
349 | coro_create (coro_context *ctx, coro_func coro, void *arg, void *sptr, long ssize) |
548 | coro_create (coro_context *ctx, coro_func coro, void *arg, void *sptr, size_t ssize) |
350 | { |
549 | { |
351 | static coro_context nctx; |
550 | static coro_context nctx; |
352 | static int once; |
551 | static int once; |
353 | |
552 | |
354 | if (!once) |
553 | if (!once) |
… | |
… | |
371 | args.arg = arg; |
570 | args.arg = arg; |
372 | args.self = ctx; |
571 | args.self = ctx; |
373 | args.main = &nctx; |
572 | args.main = &nctx; |
374 | |
573 | |
375 | pthread_attr_init (&attr); |
574 | pthread_attr_init (&attr); |
|
|
575 | #if __UCLIBC__ |
|
|
576 | /* exists, but is borked */ |
|
|
577 | /*pthread_attr_setstacksize (&attr, (size_t)ssize);*/ |
|
|
578 | #elif __CYGWIN__ |
|
|
579 | /* POSIX, not here */ |
|
|
580 | pthread_attr_setstacksize (&attr, (size_t)ssize); |
|
|
581 | #else |
376 | pthread_attr_setstack (&attr, sptr, (size_t)ssize); |
582 | pthread_attr_setstack (&attr, sptr, (size_t)ssize); |
|
|
583 | #endif |
377 | pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS); |
584 | pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS); |
378 | pthread_create (&ctx->id, &attr, coro_init, &args); |
585 | pthread_create (&ctx->id, &attr, coro_init, &args); |
379 | |
586 | |
380 | coro_transfer (args.main, args.self); |
587 | coro_transfer (args.main, args.self); |
381 | } |
588 | } |
… | |
… | |
395 | } |
602 | } |
396 | |
603 | |
397 | pthread_cond_destroy (&ctx->cv); |
604 | pthread_cond_destroy (&ctx->cv); |
398 | } |
605 | } |
399 | |
606 | |
|
|
607 | /*****************************************************************************/ |
|
|
608 | /* fiber backend */ |
|
|
609 | /*****************************************************************************/ |
|
|
610 | #elif CORO_FIBER |
|
|
611 | |
|
|
612 | #define WIN32_LEAN_AND_MEAN |
|
|
613 | #if _WIN32_WINNT < 0x0400 |
|
|
614 | #undef _WIN32_WINNT |
|
|
615 | #define _WIN32_WINNT 0x0400 |
|
|
616 | #endif |
|
|
617 | #include <windows.h> |
|
|
618 | |
|
|
619 | VOID CALLBACK |
|
|
620 | coro_init (PVOID arg) |
|
|
621 | { |
|
|
622 | coro_context *ctx = (coro_context *)arg; |
|
|
623 | |
|
|
624 | ctx->coro (ctx->arg); |
|
|
625 | } |
|
|
626 | |
|
|
627 | void |
|
|
628 | coro_transfer (coro_context *prev, coro_context *next) |
|
|
629 | { |
|
|
630 | if (!prev->fiber) |
|
|
631 | { |
|
|
632 | prev->fiber = GetCurrentFiber (); |
|
|
633 | |
|
|
634 | if (prev->fiber == 0 || prev->fiber == (void *)0x1e00) |
|
|
635 | prev->fiber = ConvertThreadToFiber (0); |
|
|
636 | } |
|
|
637 | |
|
|
638 | SwitchToFiber (next->fiber); |
|
|
639 | } |
|
|
640 | |
|
|
641 | void |
|
|
642 | coro_create (coro_context *ctx, coro_func coro, void *arg, void *sptr, size_t ssize) |
|
|
643 | { |
|
|
644 | ctx->fiber = 0; |
|
|
645 | ctx->coro = coro; |
|
|
646 | ctx->arg = arg; |
|
|
647 | |
|
|
648 | if (!coro) |
|
|
649 | return; |
|
|
650 | |
|
|
651 | ctx->fiber = CreateFiber (ssize, coro_init, ctx); |
|
|
652 | } |
|
|
653 | |
|
|
654 | void |
|
|
655 | coro_destroy (coro_context *ctx) |
|
|
656 | { |
|
|
657 | DeleteFiber (ctx->fiber); |
|
|
658 | } |
|
|
659 | |
400 | #else |
660 | #else |
401 | # error unsupported backend |
661 | #error unsupported backend |
|
|
662 | #endif |
|
|
663 | |
|
|
664 | /*****************************************************************************/ |
|
|
665 | /* stack management */ |
|
|
666 | /*****************************************************************************/ |
|
|
667 | #if CORO_STACKALLOC |
|
|
668 | |
|
|
669 | #include <stdlib.h> |
|
|
670 | |
|
|
671 | #ifndef _WIN32 |
|
|
672 | # include <unistd.h> |
|
|
673 | #endif |
|
|
674 | |
|
|
675 | #if CORO_USE_VALGRIND |
|
|
676 | # include <valgrind/valgrind.h> |
|
|
677 | #endif |
|
|
678 | |
|
|
679 | #if _POSIX_MAPPED_FILES |
|
|
680 | # include <sys/mman.h> |
|
|
681 | # define CORO_MMAP 1 |
|
|
682 | # ifndef MAP_ANONYMOUS |
|
|
683 | # ifdef MAP_ANON |
|
|
684 | # define MAP_ANONYMOUS MAP_ANON |
|
|
685 | # else |
|
|
686 | # undef CORO_MMAP |
|
|
687 | # endif |
402 | #endif |
688 | # endif |
|
|
689 | # include <limits.h> |
|
|
690 | #else |
|
|
691 | # undef CORO_MMAP |
|
|
692 | #endif |
403 | |
693 | |
|
|
694 | #if _POSIX_MEMORY_PROTECTION |
|
|
695 | # ifndef CORO_GUARDPAGES |
|
|
696 | # define CORO_GUARDPAGES 4 |
|
|
697 | # endif |
|
|
698 | #else |
|
|
699 | # undef CORO_GUARDPAGES |
|
|
700 | #endif |
|
|
701 | |
|
|
702 | #if !CORO_MMAP |
|
|
703 | # undef CORO_GUARDPAGES |
|
|
704 | #endif |
|
|
705 | |
|
|
706 | #if !__i386__ && !__x86_64__ && !__powerpc__ && !__arm__ && !__aarch64__ && !__m68k__ && !__alpha__ && !__mips__ && !__sparc64__ |
|
|
707 | # undef CORO_GUARDPAGES |
|
|
708 | #endif |
|
|
709 | |
|
|
710 | #ifndef CORO_GUARDPAGES |
|
|
711 | # define CORO_GUARDPAGES 0 |
|
|
712 | #endif |
|
|
713 | |
|
|
714 | #if !PAGESIZE |
|
|
715 | #if !CORO_MMAP |
|
|
716 | #define PAGESIZE 4096 |
|
|
717 | #else |
|
|
718 | static size_t |
|
|
719 | coro_pagesize (void) |
|
|
720 | { |
|
|
721 | static size_t pagesize; |
|
|
722 | |
|
|
723 | if (!pagesize) |
|
|
724 | pagesize = sysconf (_SC_PAGESIZE); |
|
|
725 | |
|
|
726 | return pagesize; |
|
|
727 | } |
|
|
728 | |
|
|
729 | #define PAGESIZE coro_pagesize () |
|
|
730 | #endif |
|
|
731 | #endif |
|
|
732 | |
|
|
733 | int |
|
|
734 | coro_stack_alloc (struct coro_stack *stack, unsigned int size) |
|
|
735 | { |
|
|
736 | if (!size) |
|
|
737 | size = 256 * 1024; |
|
|
738 | |
|
|
739 | stack->sptr = 0; |
|
|
740 | stack->ssze = ((size_t)size * sizeof (void *) + PAGESIZE - 1) / PAGESIZE * PAGESIZE; |
|
|
741 | |
|
|
742 | #if CORO_FIBER |
|
|
743 | |
|
|
744 | stack->sptr = (void *)stack; |
|
|
745 | return 1; |
|
|
746 | |
|
|
747 | #else |
|
|
748 | |
|
|
749 | size_t ssze = stack->ssze + CORO_GUARDPAGES * PAGESIZE; |
|
|
750 | void *base; |
|
|
751 | |
|
|
752 | #if CORO_MMAP |
|
|
753 | /* mmap supposedly does allocate-on-write for us */ |
|
|
754 | base = mmap (0, ssze, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); |
|
|
755 | |
|
|
756 | if (base == (void *)-1) |
|
|
757 | { |
|
|
758 | /* some systems don't let us have executable heap */ |
|
|
759 | /* we assume they won't need executable stack in that case */ |
|
|
760 | base = mmap (0, ssze, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); |
|
|
761 | |
|
|
762 | if (base == (void *)-1) |
|
|
763 | return 0; |
|
|
764 | } |
|
|
765 | |
|
|
766 | #if CORO_GUARDPAGES |
|
|
767 | mprotect (base, CORO_GUARDPAGES * PAGESIZE, PROT_NONE); |
|
|
768 | #endif |
|
|
769 | |
|
|
770 | base = (void*)((char *)base + CORO_GUARDPAGES * PAGESIZE); |
|
|
771 | #else |
|
|
772 | base = malloc (ssze); |
|
|
773 | if (!base) |
|
|
774 | return 0; |
|
|
775 | #endif |
|
|
776 | |
|
|
777 | #if CORO_USE_VALGRIND |
|
|
778 | stack->valgrind_id = VALGRIND_STACK_REGISTER ((char *)base, ((char *)base) + ssze - CORO_GUARDPAGES * PAGESIZE); |
|
|
779 | #endif |
|
|
780 | |
|
|
781 | stack->sptr = base; |
|
|
782 | return 1; |
|
|
783 | |
|
|
784 | #endif |
|
|
785 | } |
|
|
786 | |
|
|
787 | void |
|
|
788 | coro_stack_free (struct coro_stack *stack) |
|
|
789 | { |
|
|
790 | #if CORO_FIBER |
|
|
791 | /* nop */ |
|
|
792 | #else |
|
|
793 | #if CORO_USE_VALGRIND |
|
|
794 | VALGRIND_STACK_DEREGISTER (stack->valgrind_id); |
|
|
795 | #endif |
|
|
796 | |
|
|
797 | #if CORO_MMAP |
|
|
798 | if (stack->sptr) |
|
|
799 | munmap ((void*)((char *)stack->sptr - CORO_GUARDPAGES * PAGESIZE), |
|
|
800 | stack->ssze + CORO_GUARDPAGES * PAGESIZE); |
|
|
801 | #else |
|
|
802 | free (stack->sptr); |
|
|
803 | #endif |
|
|
804 | #endif |
|
|
805 | } |
|
|
806 | |
|
|
807 | #endif |
|
|
808 | |