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/cvs/libcoro/coro.c
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Comparing libcoro/coro.c (file contents):
Revision 1.30 by root, Fri Apr 4 20:07:35 2008 UTC vs.
Revision 1.35 by root, Mon Nov 3 16:05:38 2008 UTC

… …
43#if !defined(STACK_ADJUST_PTR) 43#if !defined(STACK_ADJUST_PTR)
44/* IRIX is decidedly NON-unix */ 44/* IRIX is decidedly NON-unix */
45# if __sgi 45# if __sgi
46# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8) 46# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8)
47# define STACK_ADJUST_SIZE(sp,ss) ((ss) - 8) 47# define STACK_ADJUST_SIZE(sp,ss) ((ss) - 8)
48# elif __i386__ && CORO_LINUX 48# elif (__i386__ && CORO_LINUX) || (_M_IX86 && CORO_LOSER)
49# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss)) 49# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss))
50# define STACK_ADJUST_SIZE(sp,ss) (ss) 50# define STACK_ADJUST_SIZE(sp,ss) (ss)
51# elif __amd64__ && CORO_LINUX 51# elif (__amd64__ && CORO_LINUX) || ((_M_AMD64 || _M_IA64) && CORO_LOSER)
52# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8) 52# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8)
53# define STACK_ADJUST_SIZE(sp,ss) (ss) 53# define STACK_ADJUST_SIZE(sp,ss) (ss)
54# else 54# else
55# define STACK_ADJUST_PTR(sp,ss) (sp) 55# define STACK_ADJUST_PTR(sp,ss) (sp)
56# define STACK_ADJUST_SIZE(sp,ss) (ss) 56# define STACK_ADJUST_SIZE(sp,ss) (ss)
… …
120# endif 120# endif
121 121
122#endif 122#endif
123 123
124#if CORO_ASM 124#if CORO_ASM
125void __attribute__((__noinline__, __fastcall__)) 125asm (
126coro_transfer (struct coro_context *prev, struct coro_context *next) 126 ".text\n"
127{ 127 ".globl coro_transfer\n"
128 asm volatile ( 128 ".type coro_transfer, @function\n"
129 "coro_transfer:\n"
129#if __amd64 130#if __amd64
130# define NUM_CLOBBERED 5 131# define NUM_SAVED 5
131 "push %%rbx\n\t" 132 "\tpush %rbx\n"
132 "push %%r12\n\t" 133 "\tpush %r12\n"
133 "push %%r13\n\t" 134 "\tpush %r13\n"
134 "push %%r14\n\t" 135 "\tpush %r14\n"
135 "push %%r15\n\t" 136 "\tpush %r15\n"
136 "mov %%rsp, %0\n\t" 137 "\tmov %rsp, (%rdi)\n"
137 "mov %1, %%rsp\n\t" 138 "\tmov (%rsi), %rsp\n"
138 "pop %%r15\n\t" 139 "\tpop %r15\n"
139 "pop %%r14\n\t" 140 "\tpop %r14\n"
140 "pop %%r13\n\t" 141 "\tpop %r13\n"
141 "pop %%r12\n\t" 142 "\tpop %r12\n"
142 "pop %%rbx\n\t" 143 "\tpop %rbx\n"
143#elif __i386 144#elif __i386
144# define NUM_CLOBBERED 4 145# define NUM_SAVED 4
145 "push %%ebx\n\t" 146 "\tpush %ebx\n"
146 "push %%esi\n\t" 147 "\tpush %esi\n"
147 "push %%edi\n\t" 148 "\tpush %edi\n"
148 "push %%ebp\n\t" 149 "\tpush %ebp\n"
149 "mov %%esp, %0\n\t" 150 "\tmov %esp, (%eax)\n"
150 "mov %1, %%esp\n\t" 151 "\tmov (%edx), %esp\n"
151 "pop %%ebp\n\t" 152 "\tpop %ebp\n"
152 "pop %%edi\n\t" 153 "\tpop %edi\n"
153 "pop %%esi\n\t" 154 "\tpop %esi\n"
154 "pop %%ebx\n\t" 155 "\tpop %ebx\n"
155#else 156#else
156# error unsupported architecture 157# error unsupported architecture
157#endif 158#endif
158 : "=m" (prev->sp) 159 "\tret\n"
159 : "m" (next->sp) 160);
160 );
161}
162#endif 161#endif
163 162
164#if CORO_PTHREAD 163#if CORO_PTHREAD
165 164
166struct coro_init_args { 165struct coro_init_args {
… …
184 func (arg); 183 func (arg);
185 pthread_mutex_unlock (&coro_mutex); 184 pthread_mutex_unlock (&coro_mutex);
186 185
187 return 0; 186 return 0;
188} 187}
188
189asm("");
189 190
190void coro_transfer(coro_context *prev, coro_context *next) 191void coro_transfer(coro_context *prev, coro_context *next)
191{ 192{
192 pthread_cond_init (&prev->c, 0); 193 pthread_cond_init (&prev->c, 0);
193 pthread_cond_signal (&next->c); 194 pthread_cond_signal (&next->c);
… …
285#if __CYGWIN__ 286#if __CYGWIN__
286 ctx->env[7] = (long)((char *)sptr + ssize); 287 ctx->env[7] = (long)((char *)sptr + ssize);
287 ctx->env[8] = (long)coro_init; 288 ctx->env[8] = (long)coro_init;
288#elif defined(_M_IX86) 289#elif defined(_M_IX86)
289 ((_JUMP_BUFFER *)&ctx->env)->Eip = (long)coro_init; 290 ((_JUMP_BUFFER *)&ctx->env)->Eip = (long)coro_init;
290 ((_JUMP_BUFFER *)&ctx->env)->Esp = (long)STACK_ADJUST_PTR (sptr,ssize); 291 ((_JUMP_BUFFER *)&ctx->env)->Esp = (long)STACK_ADJUST_PTR (sptr, ssize);
291#elif defined(_M_AMD64) 292#elif defined(_M_AMD64)
292 ((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64)coro_init; 293 ((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64)coro_init;
293 ((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64)STACK_ADJUST_PTR (sptr,ssize); 294 ((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64)STACK_ADJUST_PTR (sptr, ssize);
294#elif defined(_M_IA64) 295#elif defined(_M_IA64)
295 ((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64)coro_init; 296 ((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64)coro_init;
296 ((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64)STACK_ADJUST_PTR (sptr,ssize); 297 ((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64)STACK_ADJUST_PTR (sptr, ssize);
297#else 298#else
298# error "microsoft libc or architecture not supported" 299# error "microsoft libc or architecture not supported"
299#endif 300#endif
300 301
301# elif CORO_LINUX 302# elif CORO_LINUX
… …
324 ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize); 325 ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize);
325 326
326# elif CORO_ASM 327# elif CORO_ASM
327 328
328 ctx->sp = (volatile void **)(ssize + (char *)sptr); 329 ctx->sp = (volatile void **)(ssize + (char *)sptr);
330 /* we try to allow for both functions with and without frame pointers */
329 *--ctx->sp = (void *)coro_init; 331 *--ctx->sp = (void *)coro_init;
330 *--ctx->sp = (void *)coro_init; // this is needed when the prologue saves ebp 332 {
331 ctx->sp -= NUM_CLOBBERED; 333 int i;
334 for (i = NUM_SAVED; i--; )
335 *--ctx->sp = 0;
336 }
332 337
333# endif 338# endif
334 339
335 coro_transfer ((coro_context *)create_coro, (coro_context *)new_coro); 340 coro_transfer ((coro_context *)create_coro, (coro_context *)new_coro);
336 341

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