| … | |
… | |
| 120 | # endif |
120 | # endif |
| 121 | |
121 | |
| 122 | #endif |
122 | #endif |
| 123 | |
123 | |
| 124 | #if CORO_ASM |
124 | #if CORO_ASM |
| 125 | void __attribute__((__noinline__, __regparm__(2))) |
125 | asm ( |
| 126 | coro_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_SAVED 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_SAVED 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 | |
| 166 | struct coro_init_args { |
165 | struct 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 | |
|
|
189 | asm(""); |
| 189 | |
190 | |
| 190 | void coro_transfer(coro_context *prev, coro_context *next) |
191 | void 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); |
| … | |
… | |
| 327 | |
328 | |
| 328 | ctx->sp = (volatile void **)(ssize + (char *)sptr); |
329 | ctx->sp = (volatile void **)(ssize + (char *)sptr); |
| 329 | /* we try to allow for both functions with and without frame pointers */ |
330 | /* we try to allow for both functions with and without frame pointers */ |
| 330 | *--ctx->sp = (void *)coro_init; |
331 | *--ctx->sp = (void *)coro_init; |
| 331 | { |
332 | { |
| 332 | void *frame = ctx->sp - 1; |
|
|
| 333 | int i; |
333 | int i; |
| 334 | for (i = NUM_SAVED; i--; ) |
334 | for (i = NUM_SAVED; i--; ) |
| 335 | *--ctx->sp = frame; |
335 | *--ctx->sp = 0; |
| 336 | } |
336 | } |
| 337 | |
337 | |
| 338 | # endif |
338 | # endif |
| 339 | |
339 | |
| 340 | coro_transfer ((coro_context *)create_coro, (coro_context *)new_coro); |
340 | coro_transfer ((coro_context *)create_coro, (coro_context *)new_coro); |
