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78 | |
78 | |
79 | static coro_func coro_init_func; |
79 | static coro_func coro_init_func; |
80 | static void *coro_init_arg; |
80 | static void *coro_init_arg; |
81 | static coro_context *new_coro, *create_coro; |
81 | static coro_context *new_coro, *create_coro; |
82 | |
82 | |
83 | /* what we really want to detect here is wether we use a new-enough version of GAS */ |
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84 | /* with dwarf debug info. instead, check for gcc 3, ELF and GNU/Linux and hope for the best */ |
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85 | # if __GNUC__ >= 3 && __ELF__ && __linux__ |
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86 | # define HAVE_CFI 1 |
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87 | # endif |
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88 | |
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89 | static void |
83 | static void |
90 | coro_init (void) |
84 | coro_init (void) |
91 | { |
85 | { |
92 | volatile coro_func func = coro_init_func; |
86 | volatile coro_func func = coro_init_func; |
93 | volatile void *arg = coro_init_arg; |
87 | volatile void *arg = coro_init_arg; |
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113 | _setjmp (new_coro->env) |
107 | _setjmp (new_coro->env) |
114 | #else |
108 | #else |
115 | sigsetjmp (new_coro->env, 0) |
109 | sigsetjmp (new_coro->env, 0) |
116 | #endif |
110 | #endif |
117 | ) { |
111 | ) { |
118 | #if HAVE_CFI |
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119 | asm (".cfi_startproc"); |
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120 | #endif |
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121 | coro_init (); /* start it */ |
112 | coro_init (); /* start it */ |
122 | #if HAVE_CFI |
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123 | asm (".cfi_endproc"); |
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124 | #endif |
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125 | } |
113 | } |
126 | else |
114 | else |
127 | trampoline_done = 1; |
115 | trampoline_done = 1; |
128 | } |
116 | } |
129 | |
117 | |
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285 | ctx->env[JB_PC] = (__uint64_t)coro_init; |
273 | ctx->env[JB_PC] = (__uint64_t)coro_init; |
286 | ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
274 | ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
287 | |
275 | |
288 | # elif CORO_ASM |
276 | # elif CORO_ASM |
289 | |
277 | |
290 | ctx->sp = (volatile void **)(ssize + (char *)sptr); |
278 | ctx->sp = (void **)(ssize + (char *)sptr); |
291 | *--ctx->sp = (void *)abort; /* needed for alignment only */ |
279 | *--ctx->sp = (void *)abort; /* needed for alignment only */ |
292 | *--ctx->sp = (void *)coro_init; |
280 | *--ctx->sp = (void *)coro_init; |
293 | ctx->sp -= NUM_SAVED; |
281 | ctx->sp -= NUM_SAVED; |
294 | |
282 | |
295 | # elif CORO_UCONTEXT |
283 | # elif CORO_UCONTEXT |