1 /* 2 Copyright (c) 2016 Richard Maxwell 3 4 Permission is hereby granted, free of charge, to any person obtaining a copy 5 of this software and associated documentation files (the "Software"), to deal 6 in the Software without restriction, including without limitation the rights 7 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 8 copies of the Software, and to permit persons to whom the Software is 9 furnished to do so, subject to the following conditions: 10 11 The above copyright notice and this permission notice shall be included in all 12 copies or substantial portions of the Software. 13 14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 19 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 20 SOFTWARE. 21 */ 22 23 #ifndef FCONTEXT_H 24 #define FCONTEXT_H 25 26 #include <stdint.h> 27 // intptr_t 28 29 #include <stddef.h> 30 // size_t 31 32 // ----------------------------------------------------------------------------- 33 #ifdef __cplusplus 34 extern "C" { 35 #endif 36 // ----------------------------------------------------------------------------- 37 38 typedef void* fcontext_t; 39 40 intptr_t jump_fcontext 41 ( 42 fcontext_t* ofc 43 , fcontext_t nfc 44 , intptr_t vp 45 , int preserve_fpu 46 ); 47 48 fcontext_t make_fcontext 49 ( 50 void* sp 51 , size_t size 52 , void (*fn)(intptr_t) 53 ); 54 // sp is the pointer to the _top_ of the stack (ie &stack_buffer[size]). 55 56 // ----------------------------------------------------------------------------- 57 #ifdef __cplusplus 58 } 59 #endif 60 // ----------------------------------------------------------------------------- 61 62 #endif 63