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Comparing libcoro/coro.c (file contents):
Revision 1.52 by root, Fri Apr 2 20:21:21 2010 UTC vs.
Revision 1.60 by root, Mon Jun 13 09:00:15 2011 UTC

1/* 1/*
2 * Copyright (c) 2001-2009 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,
… …
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
92 /* we blindly assume on any __linux with __amd64 we have a new enough gas with .cfi_undefined support */
93 asm (".cfi_undefined rip");
94#endif
95
91 func ((void *)arg); 96 func ((void *)arg);
92 97
93 /* the new coro returned. bad. just abort() for now */ 98 /* the new coro returned. bad. just abort() for now */
94 abort (); 99 abort ();
95} 100}
… …
110 115
111# endif 116# endif
112 117
113# if CORO_ASM 118# if CORO_ASM
114 119
120 #if _WIN32
121 #define CORO_WIN_TIB 1
122 #endif
123
115 asm ( 124 asm (
116 ".text\n" 125 "\t.text\n"
117 ".globl coro_transfer\n" 126 "\t.globl coro_transfer\n"
118 ".type coro_transfer, @function\n"
119 "coro_transfer:\n" 127 "coro_transfer:\n"
120 /* windows, of course, gives a shit on the amd64 ABI and uses different registers */ 128 /* windows, of course, gives a shit on the amd64 ABI and uses different registers */
121 /* http://blogs.msdn.com/freik/archive/2005/03/17/398200.aspx */ 129 /* http://blogs.msdn.com/freik/archive/2005/03/17/398200.aspx */
122 #if __amd64 130 #if __amd64
131 #ifdef WIN32
132 /* TODO: xmm6..15 also would need to be saved. sigh. */
133 #define NUM_SAVED 8
134 "\tpushq %rsi\n"
135 "\tpushq %rdi\n"
136 "\tpushq %rbp\n"
137 "\tpushq %rbx\n"
138 "\tpushq %r12\n"
139 "\tpushq %r13\n"
140 "\tpushq %r14\n"
141 "\tpushq %r15\n"
142 #if CORO_WIN_TIB
143 "\tpushq %fs:0x0\n"
144 "\tpushq %fs:0x8\n"
145 "\tpushq %fs:0xc\n"
146 #endif
147 "\tmovq %rsp, (%rcx)\n"
148 "\tmovq (%rdx), %rsp\n"
149 #if CORO_WIN_TIB
150 "\tpopq %fs:0xc\n"
151 "\tpopq %fs:0x8\n"
152 "\tpopq %fs:0x0\n"
153 #endif
154 "\tpopq %r15\n"
155 "\tpopq %r14\n"
156 "\tpopq %r13\n"
157 "\tpopq %r12\n"
158 "\tpopq %rbx\n"
159 "\tpopq %rbp\n"
160 "\tpopq %rdi\n"
161 "\tpopq %rsi\n"
162 #else
123 #define NUM_SAVED 6 163 #define NUM_SAVED 6
124 "\tpush %rbp\n" 164 "\tpushq %rbp\n"
125 "\tpush %rbx\n" 165 "\tpushq %rbx\n"
126 "\tpush %r12\n" 166 "\tpushq %r12\n"
127 "\tpush %r13\n" 167 "\tpushq %r13\n"
128 "\tpush %r14\n" 168 "\tpushq %r14\n"
129 "\tpush %r15\n" 169 "\tpushq %r15\n"
130 #if CORO_WIN_TIB 170 "\tmovq %rsp, (%rdi)\n"
171 "\tmovq (%rsi), %rsp\n"
172 "\tpopq %r15\n"
173 "\tpopq %r14\n"
174 "\tpopq %r13\n"
175 "\tpopq %r12\n"
131 "\tpush %gs:0x0\n" 176 "\tpopq %rbx\n"
132 "\tpush %gs:0x8\n" 177 "\tpopq %rbp\n"
133 "\tpush %gs:0xc\n"
134 #endif 178 #endif
135 "\tmov %rsp, (%rdi)\n"
136 "\tmov (%rsi), %rsp\n"
137 #if CORO_WIN_TIB
138 "\tpop %gs:0xc\n"
139 "\tpop %gs:0x8\n"
140 "\tpop %gs:0x0\n"
141 #endif
142 "\tpop %r15\n"
143 "\tpop %r14\n"
144 "\tpop %r13\n"
145 "\tpop %r12\n"
146 "\tpop %rbx\n"
147 "\tpop %rbp\n"
148 #elif __i386 179 #elif __i386
149 #define NUM_SAVED 4 180 #define NUM_SAVED 4
150 "\tpush %ebp\n" 181 "\tpushl %ebp\n"
151 "\tpush %ebx\n" 182 "\tpushl %ebx\n"
152 "\tpush %esi\n" 183 "\tpushl %esi\n"
153 "\tpush %edi\n" 184 "\tpushl %edi\n"
154 #if CORO_WIN_TIB 185 #if CORO_WIN_TIB
155 "\tpush %fs:0\n" 186 "\tpushl %fs:0\n"
156 "\tpush %fs:4\n" 187 "\tpushl %fs:4\n"
157 "\tpush %fs:8\n" 188 "\tpushl %fs:8\n"
158 #endif 189 #endif
159 "\tmov %esp, (%eax)\n" 190 "\tmovl %esp, (%eax)\n"
160 "\tmov (%edx), %esp\n" 191 "\tmovl (%edx), %esp\n"
161 #if CORO_WIN_TIB 192 #if CORO_WIN_TIB
162 "\tpop %fs:8\n" 193 "\tpopl %fs:8\n"
163 "\tpop %fs:4\n" 194 "\tpopl %fs:4\n"
164 "\tpop %fs:0\n" 195 "\tpopl %fs:0\n"
165 #endif 196 #endif
166 "\tpop %edi\n" 197 "\tpopl %edi\n"
167 "\tpop %esi\n" 198 "\tpopl %esi\n"
168 "\tpop %ebx\n" 199 "\tpopl %ebx\n"
169 "\tpop %ebp\n" 200 "\tpopl %ebp\n"
170 #else 201 #else
171 #error unsupported architecture 202 #error unsupported architecture
172 #endif 203 #endif
173 "\tret\n" 204 "\tret\n"
174 ); 205 );
… …
210 perror ("sigaction"); 241 perror ("sigaction");
211 abort (); 242 abort ();
212 } 243 }
213 244
214 /* set the new stack */ 245 /* set the new stack */
215 nstk.ss_sp = STACK_ADJUST_PTR (sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */ 246 nstk.ss_sp = STACK_ADJUST_PTR (sptr, ssize); /* yes, some platforms (IRIX) get this wrong. */
216 nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize); 247 nstk.ss_size = STACK_ADJUST_SIZE (sptr, ssize);
217 nstk.ss_flags = 0; 248 nstk.ss_flags = 0;
218 249
219 if (sigaltstack (&nstk, &ostk) < 0) 250 if (sigaltstack (&nstk, &ostk) < 0)
220 { 251 {
221 perror ("sigaltstack"); 252 perror ("sigaltstack");
… …
305 *--ctx->sp = (char *)sptr + ssize; /* StackBase */ 336 *--ctx->sp = (char *)sptr + ssize; /* StackBase */
306 *--ctx->sp = sptr; /* StackLimit */ 337 *--ctx->sp = sptr; /* StackLimit */
307 #endif 338 #endif
308 339
309 ctx->sp -= NUM_SAVED; 340 ctx->sp -= NUM_SAVED;
341 memset (ctx->sp, 0, sizeof (*ctx->sp) * NUM_SAVED);
310 342
311# elif CORO_UCONTEXT 343# elif CORO_UCONTEXT
312 344
313 getcontext (&(ctx->uc)); 345 getcontext (&(ctx->uc));
314 346
… …
402 args.arg = arg; 434 args.arg = arg;
403 args.self = ctx; 435 args.self = ctx;
404 args.main = &nctx; 436 args.main = &nctx;
405 437
406 pthread_attr_init (&attr); 438 pthread_attr_init (&attr);
439#if __UCLIBC__
440 /* exists, but is borked */
441 /*pthread_attr_setstacksize (&attr, (size_t)ssize);*/
442#else
407 pthread_attr_setstack (&attr, sptr, (size_t)ssize); 443 pthread_attr_setstack (&attr, sptr, (size_t)ssize);
444#endif
408 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS); 445 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
409 pthread_create (&ctx->id, &attr, coro_init, &args); 446 pthread_create (&ctx->id, &attr, coro_init, &args);
410 447
411 coro_transfer (args.main, args.self); 448 coro_transfer (args.main, args.self);
412 } 449 }

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