1 | /* |
1 | /* |
2 | * Copyright (c) 2001 Marc Alexander Lehmann <pcg@goof.com> |
2 | * Copyright (c) 2001-2006 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, |
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38 | # define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8) |
38 | # define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8) |
39 | # define STACK_ADJUST_SIZE(sp,ss) ((ss) - 8) |
39 | # define STACK_ADJUST_SIZE(sp,ss) ((ss) - 8) |
40 | # elif __i386__ && CORO_LINUX |
40 | # elif __i386__ && CORO_LINUX |
41 | # define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss)) |
41 | # define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss)) |
42 | # define STACK_ADJUST_SIZE(sp,ss) (ss) |
42 | # define STACK_ADJUST_SIZE(sp,ss) (ss) |
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43 | # elif __amd64__ && CORO_LINUX |
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44 | # define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8) |
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45 | # define STACK_ADJUST_SIZE(sp,ss) (ss) |
43 | # else |
46 | # else |
44 | # define STACK_ADJUST_PTR(sp,ss) (sp) |
47 | # define STACK_ADJUST_PTR(sp,ss) (sp) |
45 | # define STACK_ADJUST_SIZE(sp,ss) (ss) |
48 | # define STACK_ADJUST_SIZE(sp,ss) (ss) |
46 | # endif |
49 | # endif |
47 | #endif |
50 | #endif |
48 | |
51 | |
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52 | #if CORO_UCONTEXT |
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53 | # include <stddef.h> |
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54 | #endif |
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55 | |
49 | #if CORO_SJLJ || CORO_LOOSE || CORO_LINUX || CORO_IRIX |
56 | #if CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX |
50 | |
57 | |
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58 | #include <stdlib.h> |
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59 | |
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60 | #if CORO_SJLJ |
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61 | # include <stdio.h> |
51 | #include <signal.h> |
62 | # include <signal.h> |
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63 | # include <unistd.h> |
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64 | #endif |
52 | |
65 | |
53 | static volatile coro_func coro_init_func; |
66 | static volatile coro_func coro_init_func; |
54 | static volatile void *coro_init_arg; |
67 | static volatile void *coro_init_arg; |
55 | static volatile coro_context *new_coro, *create_coro; |
68 | static volatile coro_context *new_coro, *create_coro; |
56 | |
69 | |
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72 | |
85 | |
73 | static volatile int trampoline_count; |
86 | static volatile int trampoline_count; |
74 | |
87 | |
75 | /* trampoline signal handler */ |
88 | /* trampoline signal handler */ |
76 | static void |
89 | static void |
77 | trampoline(int sig) |
90 | trampoline (int sig) |
78 | { |
91 | { |
79 | if (setjmp (((coro_context *)new_coro)->env)) |
92 | if (setjmp (((coro_context *)new_coro)->env)) |
80 | coro_init (); /* start it */ |
93 | coro_init (); /* start it */ |
81 | else |
94 | else |
82 | trampoline_count++; |
95 | trampoline_count++; |
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100 | ctx->uc.uc_stack.ss_size = (size_t) STACK_ADJUST_SIZE (sptr,ssize); |
113 | ctx->uc.uc_stack.ss_size = (size_t) STACK_ADJUST_SIZE (sptr,ssize); |
101 | ctx->uc.uc_stack.ss_flags = 0; |
114 | ctx->uc.uc_stack.ss_flags = 0; |
102 | |
115 | |
103 | makecontext (&(ctx->uc), (void (*)()) coro, 1, arg); |
116 | makecontext (&(ctx->uc), (void (*)()) coro, 1, arg); |
104 | |
117 | |
105 | #elif CORO_SJLJ || CORO_LOOSE || CORO_LINUX || CORO_IRIX |
118 | #elif CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX |
106 | |
119 | |
107 | # if CORO_SJLJ |
120 | # if CORO_SJLJ |
108 | stack_t ostk, nstk; |
121 | stack_t ostk, nstk; |
109 | struct sigaction osa, nsa; |
122 | struct sigaction osa, nsa; |
110 | sigset_t nsig, osig; |
123 | sigset_t nsig, osig; |
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156 | abort (); |
169 | abort (); |
157 | |
170 | |
158 | if (~ostk.ss_flags & SS_DISABLE) |
171 | if (~ostk.ss_flags & SS_DISABLE) |
159 | sigaltstack (&ostk, 0); |
172 | sigaltstack (&ostk, 0); |
160 | |
173 | |
161 | sigaction (SIGUSR1, &osa, 0); |
174 | sigaction (SIGUSR2, &osa, 0); |
162 | |
175 | |
163 | sigprocmask (SIG_SETMASK, &osig, 0); |
176 | sigprocmask (SIG_SETMASK, &osig, 0); |
164 | |
177 | |
165 | # elif CORO_LOOSE |
178 | # elif CORO_LOSER |
166 | |
179 | |
167 | setjmp (ctx->env); |
180 | setjmp (ctx->env); |
168 | ctx->env[7] = (long)((char *)sptr + ssize); |
181 | ctx->env[7] = (long)((char *)sptr + ssize); |
169 | ctx->env[8] = (long)coro_init; |
182 | ctx->env[8] = (long)coro_init; |
170 | |
183 | |
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182 | #elif defined(__GNU_LIBRARY__) && defined(__i386__) |
195 | #elif defined(__GNU_LIBRARY__) && defined(__i386__) |
183 | ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init; |
196 | ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init; |
184 | ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize); |
197 | ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize); |
185 | #elif defined(__GNU_LIBRARY__) && defined(__amd64__) |
198 | #elif defined(__GNU_LIBRARY__) && defined(__amd64__) |
186 | ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init; |
199 | ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init; |
187 | ctx->env[0].__jmpbuf[JB_RSP] = (long)((char *)sptr + ssize); |
200 | ctx->env[0].__jmpbuf[JB_RSP] = (long)STACK_ADJUST_PTR (sptr,ssize); |
188 | #else |
201 | #else |
189 | #error "linux libc or architecture not supported" |
202 | #error "linux libc or architecture not supported" |
190 | #endif |
203 | #endif |
191 | |
204 | |
192 | # elif CORO_IRIX |
205 | # elif CORO_IRIX |