… | |
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40 | |
40 | |
41 | #include "coro.h" |
41 | #include "coro.h" |
42 | |
42 | |
43 | #include <string.h> |
43 | #include <string.h> |
44 | |
44 | |
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45 | /*****************************************************************************/ |
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46 | /* ucontext/setjmp/asm backends */ |
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47 | /*****************************************************************************/ |
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48 | #if CORO_UCONTEXT || CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX || CORO_ASM |
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49 | |
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50 | # if CORO_UCONTEXT |
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51 | # include <stddef.h> |
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52 | # endif |
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53 | |
45 | #if !defined(STACK_ADJUST_PTR) |
54 | # if !defined(STACK_ADJUST_PTR) |
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55 | # if __sgi |
46 | /* IRIX is decidedly NON-unix */ |
56 | /* IRIX is decidedly NON-unix */ |
47 | # if __sgi |
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48 | # define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8) |
57 | # define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8) |
49 | # define STACK_ADJUST_SIZE(sp,ss) ((ss) - 8) |
58 | # define STACK_ADJUST_SIZE(sp,ss) ((ss) - 8) |
50 | # elif (__i386__ && CORO_LINUX) || (_M_IX86 && CORO_LOSER) |
59 | # elif (__i386__ && CORO_LINUX) || (_M_IX86 && CORO_LOSER) |
51 | # define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss)) |
60 | # define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss)) |
52 | # define STACK_ADJUST_SIZE(sp,ss) (ss) |
61 | # define STACK_ADJUST_SIZE(sp,ss) (ss) |
53 | # elif (__amd64__ && CORO_LINUX) || ((_M_AMD64 || _M_IA64) && CORO_LOSER) |
62 | # elif (__amd64__ && CORO_LINUX) || ((_M_AMD64 || _M_IA64) && CORO_LOSER) |
54 | # define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8) |
63 | # define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8) |
55 | # define STACK_ADJUST_SIZE(sp,ss) (ss) |
64 | # define STACK_ADJUST_SIZE(sp,ss) (ss) |
56 | # else |
65 | # else |
57 | # define STACK_ADJUST_PTR(sp,ss) (sp) |
66 | # define STACK_ADJUST_PTR(sp,ss) (sp) |
58 | # define STACK_ADJUST_SIZE(sp,ss) (ss) |
67 | # define STACK_ADJUST_SIZE(sp,ss) (ss) |
59 | # endif |
68 | # endif |
60 | #endif |
69 | # endif |
61 | |
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62 | #if CORO_UCONTEXT |
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63 | # include <stddef.h> |
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64 | #endif |
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65 | |
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66 | #if CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX || CORO_ASM |
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67 | |
70 | |
68 | # include <stdlib.h> |
71 | # include <stdlib.h> |
69 | |
72 | |
70 | # if CORO_SJLJ |
73 | # if CORO_SJLJ |
71 | # include <stdio.h> |
74 | # include <stdio.h> |
72 | # include <signal.h> |
75 | # include <signal.h> |
73 | # include <unistd.h> |
76 | # include <unistd.h> |
74 | # endif |
77 | # endif |
75 | |
78 | |
76 | static volatile coro_func coro_init_func; |
79 | static coro_func coro_init_func; |
77 | static volatile void *coro_init_arg; |
80 | static void *coro_init_arg; |
78 | static volatile coro_context *new_coro, *create_coro; |
81 | static coro_context *new_coro, *create_coro; |
79 | |
82 | |
80 | /* what we really want to detect here is wether we use a new-enough version of GAS */ |
83 | /* what we really want to detect here is wether we use a new-enough version of GAS */ |
81 | /* instead, check for gcc 3, ELF and GNU/Linux and hope for the best */ |
84 | /* with dwarf debug info. instead, check for gcc 3, ELF and GNU/Linux and hope for the best */ |
82 | # if __GNUC__ >= 3 && __ELF__ && __linux__ |
85 | # if __GNUC__ >= 3 && __ELF__ && __linux__ |
83 | # define HAVE_CFI 1 |
86 | # define HAVE_CFI 1 |
84 | # endif |
87 | # endif |
85 | |
88 | |
86 | static void |
89 | static void |
87 | coro_init (void) |
90 | coro_init (void) |
88 | { |
91 | { |
89 | volatile coro_func func = coro_init_func; |
92 | volatile coro_func func = coro_init_func; |
90 | volatile void *arg = coro_init_arg; |
93 | volatile void *arg = coro_init_arg; |
91 | |
94 | |
92 | coro_transfer ((coro_context *)new_coro, (coro_context *)create_coro); |
95 | coro_transfer (new_coro, create_coro); |
93 | |
96 | |
94 | func ((void *)arg); |
97 | func ((void *)arg); |
95 | |
98 | |
96 | /* the new coro returned. bad. just abort() for now */ |
99 | /* the new coro returned. bad. just abort() for now */ |
97 | abort (); |
100 | abort (); |
98 | } |
101 | } |
99 | |
102 | |
100 | # if CORO_SJLJ |
103 | # if CORO_SJLJ |
101 | |
104 | |
102 | static volatile int trampoline_count; |
105 | static volatile int trampoline_done; |
103 | |
106 | |
104 | /* trampoline signal handler */ |
107 | /* trampoline signal handler */ |
105 | static void |
108 | static void |
106 | trampoline (int sig) |
109 | trampoline (int sig) |
107 | { |
110 | { |
108 | if (setjmp (((coro_context *)new_coro)->env)) |
111 | if ( |
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112 | #if _XOPEN_UNIX > 0 |
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113 | _setjmp (new_coro->env) |
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114 | #else |
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115 | sigsetjmp (new_coro->env, 0) |
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116 | #endif |
109 | { |
117 | ) { |
110 | # if HAVE_CFI |
118 | #if HAVE_CFI |
111 | asm (".cfi_startproc"); |
119 | asm (".cfi_startproc"); |
112 | # endif |
120 | #endif |
113 | coro_init (); /* start it */ |
121 | coro_init (); /* start it */ |
114 | # if HAVE_CFI |
122 | #if HAVE_CFI |
115 | asm (".cfi_endproc"); |
123 | asm (".cfi_endproc"); |
116 | # endif |
124 | #endif |
117 | } |
125 | } |
118 | else |
126 | else |
119 | trampoline_count++; |
127 | trampoline_done = 1; |
120 | } |
128 | } |
121 | |
129 | |
122 | # endif |
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123 | |
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124 | #endif |
130 | # endif |
125 | |
131 | |
126 | #if CORO_ASM |
132 | # if CORO_ASM |
127 | |
133 | |
128 | asm ( |
134 | asm ( |
129 | ".text\n" |
135 | ".text\n" |
130 | ".globl coro_transfer\n" |
136 | ".globl coro_transfer\n" |
131 | ".type coro_transfer, @function\n" |
137 | ".type coro_transfer, @function\n" |
132 | "coro_transfer:\n" |
138 | "coro_transfer:\n" |
133 | # if __amd64 |
139 | #if __amd64 |
134 | # define NUM_SAVED 6 |
140 | #define NUM_SAVED 6 |
135 | "\tpush %rbp\n" |
141 | "\tpush %rbp\n" |
136 | "\tpush %rbx\n" |
142 | "\tpush %rbx\n" |
137 | "\tpush %r12\n" |
143 | "\tpush %r12\n" |
138 | "\tpush %r13\n" |
144 | "\tpush %r13\n" |
139 | "\tpush %r14\n" |
145 | "\tpush %r14\n" |
140 | "\tpush %r15\n" |
146 | "\tpush %r15\n" |
141 | "\tmov %rsp, (%rdi)\n" |
147 | "\tmov %rsp, (%rdi)\n" |
142 | "\tmov (%rsi), %rsp\n" |
148 | "\tmov (%rsi), %rsp\n" |
143 | "\tpop %r15\n" |
149 | "\tpop %r15\n" |
144 | "\tpop %r14\n" |
150 | "\tpop %r14\n" |
145 | "\tpop %r13\n" |
151 | "\tpop %r13\n" |
146 | "\tpop %r12\n" |
152 | "\tpop %r12\n" |
147 | "\tpop %rbx\n" |
153 | "\tpop %rbx\n" |
148 | "\tpop %rbp\n" |
154 | "\tpop %rbp\n" |
149 | # elif __i386 |
155 | #elif __i386 |
150 | # define NUM_SAVED 4 |
156 | #define NUM_SAVED 4 |
151 | "\tpush %ebp\n" |
157 | "\tpush %ebp\n" |
152 | "\tpush %ebx\n" |
158 | "\tpush %ebx\n" |
153 | "\tpush %esi\n" |
159 | "\tpush %esi\n" |
154 | "\tpush %edi\n" |
160 | "\tpush %edi\n" |
155 | "\tmov %esp, (%eax)\n" |
161 | "\tmov %esp, (%eax)\n" |
156 | "\tmov (%edx), %esp\n" |
162 | "\tmov (%edx), %esp\n" |
157 | "\tpop %edi\n" |
163 | "\tpop %edi\n" |
158 | "\tpop %esi\n" |
164 | "\tpop %esi\n" |
159 | "\tpop %ebx\n" |
165 | "\tpop %ebx\n" |
160 | "\tpop %ebp\n" |
166 | "\tpop %ebp\n" |
161 | # else |
167 | #else |
162 | # error unsupported architecture |
168 | #error unsupported architecture |
163 | # endif |
169 | #endif |
164 | "\tret\n" |
170 | "\tret\n" |
165 | ); |
171 | ); |
166 | |
172 | |
167 | #endif |
173 | # endif |
168 | |
174 | |
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175 | void |
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176 | coro_create (coro_context *ctx, coro_func coro, void *arg, void *sptr, long ssize) |
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177 | { |
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178 | coro_context nctx; |
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179 | # if CORO_SJLJ |
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180 | stack_t ostk, nstk; |
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181 | struct sigaction osa, nsa; |
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182 | sigset_t nsig, osig; |
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183 | # endif |
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184 | |
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185 | if (!coro) |
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186 | return; |
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187 | |
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188 | coro_init_func = coro; |
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189 | coro_init_arg = arg; |
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190 | |
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191 | new_coro = ctx; |
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192 | create_coro = &nctx; |
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193 | |
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194 | # if CORO_SJLJ |
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195 | /* we use SIGUSR2. first block it, then fiddle with it. */ |
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196 | |
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197 | sigemptyset (&nsig); |
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198 | sigaddset (&nsig, SIGUSR2); |
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199 | sigprocmask (SIG_BLOCK, &nsig, &osig); |
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200 | |
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201 | nsa.sa_handler = trampoline; |
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202 | sigemptyset (&nsa.sa_mask); |
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203 | nsa.sa_flags = SA_ONSTACK; |
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204 | |
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205 | if (sigaction (SIGUSR2, &nsa, &osa)) |
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206 | { |
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207 | perror ("sigaction"); |
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208 | abort (); |
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209 | } |
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210 | |
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211 | /* set the new stack */ |
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212 | nstk.ss_sp = STACK_ADJUST_PTR (sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */ |
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213 | nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize); |
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214 | nstk.ss_flags = 0; |
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215 | |
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216 | if (sigaltstack (&nstk, &ostk) < 0) |
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217 | { |
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218 | perror ("sigaltstack"); |
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219 | abort (); |
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220 | } |
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221 | |
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222 | trampoline_done = 0; |
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223 | kill (getpid (), SIGUSR2); |
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224 | sigfillset (&nsig); sigdelset (&nsig, SIGUSR2); |
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225 | |
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226 | while (!trampoline_done) |
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227 | sigsuspend (&nsig); |
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228 | |
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229 | sigaltstack (0, &nstk); |
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230 | nstk.ss_flags = SS_DISABLE; |
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231 | if (sigaltstack (&nstk, 0) < 0) |
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232 | perror ("sigaltstack"); |
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233 | |
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234 | sigaltstack (0, &nstk); |
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235 | if (~nstk.ss_flags & SS_DISABLE) |
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236 | abort (); |
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237 | |
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238 | if (~ostk.ss_flags & SS_DISABLE) |
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239 | sigaltstack (&ostk, 0); |
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240 | |
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241 | sigaction (SIGUSR2, &osa, 0); |
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242 | sigprocmask (SIG_SETMASK, &osig, 0); |
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243 | |
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244 | # elif CORO_LOSER |
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245 | |
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246 | setjmp (ctx->env); |
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247 | #if __CYGWIN__ |
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248 | ctx->env[7] = (long)((char *)sptr + ssize) - sizeof (long); |
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249 | ctx->env[8] = (long)coro_init; |
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250 | #elif defined(_M_IX86) |
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251 | ((_JUMP_BUFFER *)&ctx->env)->Eip = (long)coro_init; |
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252 | ((_JUMP_BUFFER *)&ctx->env)->Esp = (long)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
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253 | #elif defined(_M_AMD64) |
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254 | ((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64)coro_init; |
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255 | ((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
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256 | #elif defined(_M_IA64) |
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257 | ((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64)coro_init; |
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258 | ((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
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259 | #else |
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260 | #error "microsoft libc or architecture not supported" |
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261 | #endif |
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262 | |
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263 | # elif CORO_LINUX |
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264 | |
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265 | _setjmp (ctx->env); |
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266 | #if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (JB_PC) && defined (JB_SP) |
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267 | ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init; |
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268 | ctx->env[0].__jmpbuf[JB_SP] = (long)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
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269 | #elif __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (__mc68000__) |
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270 | ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init; |
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271 | ctx->env[0].__jmpbuf[0].__sp = (int *)((char *)sptr + ssize) - sizeof (long); |
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272 | #elif defined (__GNU_LIBRARY__) && defined (__i386__) |
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273 | ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init; |
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274 | ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize) - sizeof (long); |
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275 | #elif defined (__GNU_LIBRARY__) && defined (__amd64__) |
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276 | ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init; |
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277 | ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize) - sizeof (long); |
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278 | #else |
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279 | #error "linux libc or architecture not supported" |
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280 | #endif |
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281 | |
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282 | # elif CORO_IRIX |
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283 | |
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284 | sigsetjmp (ctx->env, 0); |
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285 | ctx->env[JB_PC] = (__uint64_t)coro_init; |
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286 | ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
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287 | |
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288 | # elif CORO_ASM |
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289 | |
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290 | ctx->sp = (volatile void **)(ssize + (char *)sptr); |
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291 | *--ctx->sp = (void *)abort; /* needed for alignment only */ |
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292 | *--ctx->sp = (void *)coro_init; |
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293 | ctx->sp -= NUM_SAVED; |
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294 | |
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295 | # elif CORO_UCONTEXT |
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296 | |
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297 | getcontext (&(ctx->uc)); |
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298 | |
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299 | ctx->uc.uc_link = 0; |
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300 | ctx->uc.uc_stack.ss_sp = sptr; |
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301 | ctx->uc.uc_stack.ss_size = (size_t)ssize; |
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302 | ctx->uc.uc_stack.ss_flags = 0; |
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303 | |
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304 | makecontext (&(ctx->uc), (void (*)())coro_init, 0); |
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305 | |
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306 | # endif |
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307 | |
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308 | coro_transfer (create_coro, new_coro); |
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309 | } |
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310 | |
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311 | /*****************************************************************************/ |
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312 | /* pthread backend */ |
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313 | /*****************************************************************************/ |
169 | #if CORO_PTHREAD |
314 | #elif CORO_PTHREAD |
170 | |
315 | |
171 | /* this mutex will be locked by the running coroutine */ |
316 | /* this mutex will be locked by the running coroutine */ |
172 | pthread_mutex_t coro_mutex = PTHREAD_MUTEX_INITIALIZER; |
317 | pthread_mutex_t coro_mutex = PTHREAD_MUTEX_INITIALIZER; |
173 | |
318 | |
174 | struct coro_init_args |
319 | struct coro_init_args |
… | |
… | |
186 | { |
331 | { |
187 | pthread_mutex_unlock ((pthread_mutex_t *)arg); |
332 | pthread_mutex_unlock ((pthread_mutex_t *)arg); |
188 | } |
333 | } |
189 | |
334 | |
190 | static void * |
335 | static void * |
191 | trampoline (void *args_) |
336 | coro_init (void *args_) |
192 | { |
337 | { |
193 | struct coro_init_args *args = (struct coro_init_args *)args_; |
338 | struct coro_init_args *args = (struct coro_init_args *)args_; |
194 | coro_func func = args->func; |
339 | coro_func func = args->func; |
195 | void *arg = args->arg; |
340 | void *arg = args->arg; |
196 | |
341 | |
… | |
… | |
208 | void |
353 | void |
209 | coro_transfer (coro_context *prev, coro_context *next) |
354 | coro_transfer (coro_context *prev, coro_context *next) |
210 | { |
355 | { |
211 | pthread_cond_signal (&next->cv); |
356 | pthread_cond_signal (&next->cv); |
212 | pthread_cond_wait (&prev->cv, &coro_mutex); |
357 | pthread_cond_wait (&prev->cv, &coro_mutex); |
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358 | } |
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359 | |
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360 | void |
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361 | coro_create (coro_context *ctx, coro_func coro, void *arg, void *sptr, long ssize) |
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362 | { |
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363 | static coro_context nctx; |
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364 | static int once; |
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365 | |
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366 | if (!once) |
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367 | { |
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368 | once = 1; |
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369 | |
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370 | pthread_mutex_lock (&coro_mutex); |
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371 | pthread_cond_init (&nctx.cv, 0); |
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372 | null_tid = pthread_self (); |
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373 | } |
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374 | |
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375 | pthread_cond_init (&ctx->cv, 0); |
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376 | |
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377 | if (coro) |
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378 | { |
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379 | pthread_attr_t attr; |
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380 | struct coro_init_args args; |
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381 | |
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382 | args.func = coro; |
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383 | args.arg = arg; |
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384 | args.self = ctx; |
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385 | args.main = &nctx; |
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386 | |
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387 | pthread_attr_init (&attr); |
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388 | pthread_attr_setstack (&attr, sptr, (size_t)ssize); |
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389 | pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS); |
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390 | pthread_create (&ctx->id, &attr, coro_init, &args); |
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391 | |
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392 | coro_transfer (args.main, args.self); |
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393 | } |
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394 | else |
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395 | ctx->id = null_tid; |
213 | } |
396 | } |
214 | |
397 | |
215 | void |
398 | void |
216 | coro_destroy (coro_context *ctx) |
399 | coro_destroy (coro_context *ctx) |
217 | { |
400 | { |
… | |
… | |
224 | } |
407 | } |
225 | |
408 | |
226 | pthread_cond_destroy (&ctx->cv); |
409 | pthread_cond_destroy (&ctx->cv); |
227 | } |
410 | } |
228 | |
411 | |
229 | #endif |
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230 | |
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231 | /* initialize a machine state */ |
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232 | void |
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233 | coro_create (coro_context *ctx, coro_func coro, void *arg, void *sptr, long ssize) |
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234 | { |
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235 | #if CORO_UCONTEXT |
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236 | |
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237 | if (!coro) |
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238 | return; |
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239 | |
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240 | getcontext (&(ctx->uc)); |
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241 | |
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242 | ctx->uc.uc_link = 0; |
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243 | ctx->uc.uc_stack.ss_sp = STACK_ADJUST_PTR (sptr,ssize); |
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244 | ctx->uc.uc_stack.ss_size = (size_t)STACK_ADJUST_SIZE (sptr,ssize); |
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245 | ctx->uc.uc_stack.ss_flags = 0; |
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246 | |
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247 | makecontext (&(ctx->uc), (void (*)())coro, 1, arg); |
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248 | |
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249 | #elif CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX || CORO_ASM |
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250 | |
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251 | # if CORO_SJLJ |
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252 | stack_t ostk, nstk; |
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253 | struct sigaction osa, nsa; |
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254 | sigset_t nsig, osig; |
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255 | # endif |
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256 | coro_context nctx; |
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257 | |
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258 | if (!coro) |
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259 | return; |
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260 | |
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261 | coro_init_func = coro; |
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262 | coro_init_arg = arg; |
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263 | |
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264 | new_coro = ctx; |
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265 | create_coro = &nctx; |
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266 | |
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267 | # if CORO_SJLJ |
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268 | /* we use SIGUSR2. first block it, then fiddle with it. */ |
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269 | |
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270 | sigemptyset (&nsig); |
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271 | sigaddset (&nsig, SIGUSR2); |
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272 | sigprocmask (SIG_BLOCK, &nsig, &osig); |
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273 | |
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274 | nsa.sa_handler = trampoline; |
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275 | sigemptyset (&nsa.sa_mask); |
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276 | nsa.sa_flags = SA_ONSTACK; |
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277 | |
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278 | if (sigaction (SIGUSR2, &nsa, &osa)) |
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279 | { |
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280 | perror ("sigaction"); |
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281 | abort (); |
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282 | } |
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283 | |
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284 | /* set the new stack */ |
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285 | nstk.ss_sp = STACK_ADJUST_PTR (sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */ |
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286 | nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize); |
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287 | nstk.ss_flags = 0; |
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288 | |
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289 | if (sigaltstack (&nstk, &ostk) < 0) |
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290 | { |
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291 | perror ("sigaltstack"); |
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292 | abort (); |
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293 | } |
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294 | |
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295 | trampoline_count = 0; |
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296 | kill (getpid (), SIGUSR2); |
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297 | sigfillset (&nsig); sigdelset (&nsig, SIGUSR2); |
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298 | |
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299 | while (!trampoline_count) |
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300 | sigsuspend (&nsig); |
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301 | |
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302 | sigaltstack (0, &nstk); |
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303 | nstk.ss_flags = SS_DISABLE; |
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304 | if (sigaltstack (&nstk, 0) < 0) |
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305 | perror ("sigaltstack"); |
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306 | |
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307 | sigaltstack (0, &nstk); |
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308 | if (~nstk.ss_flags & SS_DISABLE) |
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309 | abort (); |
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310 | |
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311 | if (~ostk.ss_flags & SS_DISABLE) |
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312 | sigaltstack (&ostk, 0); |
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313 | |
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314 | sigaction (SIGUSR2, &osa, 0); |
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315 | |
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316 | sigprocmask (SIG_SETMASK, &osig, 0); |
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317 | |
|
|
318 | # elif CORO_LOSER |
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319 | |
|
|
320 | setjmp (ctx->env); |
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321 | #if __CYGWIN__ |
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322 | ctx->env[7] = (long)((char *)sptr + ssize) - sizeof (long); |
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323 | ctx->env[8] = (long)coro_init; |
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324 | #elif defined(_M_IX86) |
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325 | ((_JUMP_BUFFER *)&ctx->env)->Eip = (long)coro_init; |
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326 | ((_JUMP_BUFFER *)&ctx->env)->Esp = (long)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
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|
327 | #elif defined(_M_AMD64) |
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|
328 | ((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64)coro_init; |
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329 | ((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
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330 | #elif defined(_M_IA64) |
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|
331 | ((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64)coro_init; |
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332 | ((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
|
|
333 | #else |
|
|
334 | # error "microsoft libc or architecture not supported" |
|
|
335 | #endif |
|
|
336 | |
|
|
337 | # elif CORO_LINUX |
|
|
338 | |
|
|
339 | _setjmp (ctx->env); |
|
|
340 | #if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (JB_PC) && defined (JB_SP) |
|
|
341 | ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init; |
|
|
342 | ctx->env[0].__jmpbuf[JB_SP] = (long)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
|
|
343 | #elif __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (__mc68000__) |
|
|
344 | ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init; |
|
|
345 | ctx->env[0].__jmpbuf[0].__sp = (int *)((char *)sptr + ssize) - sizeof (long); |
|
|
346 | #elif defined (__GNU_LIBRARY__) && defined (__i386__) |
|
|
347 | ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init; |
|
|
348 | ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize) - sizeof (long); |
|
|
349 | #elif defined (__GNU_LIBRARY__) && defined (__amd64__) |
|
|
350 | ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init; |
|
|
351 | ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize) - sizeof (long); |
|
|
352 | #else |
|
|
353 | # error "linux libc or architecture not supported" |
|
|
354 | #endif |
|
|
355 | |
|
|
356 | # elif CORO_IRIX |
|
|
357 | |
|
|
358 | setjmp (ctx->env); |
|
|
359 | ctx->env[JB_PC] = (__uint64_t)coro_init; |
|
|
360 | ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
|
|
361 | |
|
|
362 | # elif CORO_ASM |
|
|
363 | |
|
|
364 | ctx->sp = (volatile void **)(ssize + (char *)sptr); |
|
|
365 | *--ctx->sp = (void *)abort; /* needed for alignment only */ |
|
|
366 | *--ctx->sp = (void *)coro_init; |
|
|
367 | ctx->sp -= NUM_SAVED; |
|
|
368 | |
|
|
369 | # endif |
|
|
370 | |
|
|
371 | coro_transfer ((coro_context *)create_coro, (coro_context *)new_coro); |
|
|
372 | |
|
|
373 | # elif CORO_PTHREAD |
|
|
374 | |
|
|
375 | static coro_context nctx; |
|
|
376 | static int once; |
|
|
377 | |
|
|
378 | if (!once) |
|
|
379 | { |
|
|
380 | once = 1; |
|
|
381 | |
|
|
382 | pthread_mutex_lock (&coro_mutex); |
|
|
383 | pthread_cond_init (&nctx.cv, 0); |
|
|
384 | null_tid = pthread_self (); |
|
|
385 | } |
|
|
386 | |
|
|
387 | pthread_cond_init (&ctx->cv, 0); |
|
|
388 | |
|
|
389 | if (coro) |
|
|
390 | { |
|
|
391 | pthread_attr_t attr; |
|
|
392 | struct coro_init_args args; |
|
|
393 | |
|
|
394 | args.func = coro; |
|
|
395 | args.arg = arg; |
|
|
396 | args.self = ctx; |
|
|
397 | args.main = &nctx; |
|
|
398 | |
|
|
399 | pthread_attr_init (&attr); |
|
|
400 | pthread_attr_setstack (&attr, sptr, (size_t)ssize); |
|
|
401 | pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS); |
|
|
402 | pthread_create (&ctx->id, &attr, trampoline, &args); |
|
|
403 | |
|
|
404 | coro_transfer (args.main, args.self); |
|
|
405 | } |
|
|
406 | else |
|
|
407 | ctx->id = null_tid; |
|
|
408 | |
|
|
409 | #else |
412 | #else |
410 | # error unsupported backend |
413 | # error unsupported backend |
411 | #endif |
414 | #endif |
412 | } |
|
|
413 | |
415 | |