| 1 | /* |
| 2 | libco.win (2016-09-06) |
| 3 | authors: frangarcj |
| 4 | license: public domain |
| 5 | */ |
| 6 | |
| 7 | #define LIBCO_C |
| 8 | #include <libco.h> |
| 9 | #include <stdlib.h> |
| 10 | #include <psp2/sysmodule.h> |
| 11 | |
| 12 | #ifdef __cplusplus |
| 13 | extern "C" { |
| 14 | #endif |
| 15 | |
| 16 | static thread_local cothread_t co_active_ = 0; |
| 17 | |
| 18 | typedef struct SceFiber |
| 19 | { |
| 20 | char reserved[128]; |
| 21 | } SceFiber __attribute__( ( aligned ( 8 ) ) ) ; |
| 22 | |
| 23 | /* Forward declarations */ |
| 24 | int32_t _sceFiberInitializeImpl(SceFiber *fiber, char *name, void *entry, uint32_t argOnInitialize, |
| 25 | void* addrContext, int32_t sizeContext, void* params); |
| 26 | int32_t sceFiberFinalize(SceFiber* fiber); |
| 27 | int32_t sceFiberRun(SceFiber* fiber, uint32_t argOnRunTo, uint32_t* argOnRun); |
| 28 | int32_t sceFiberSwitch(SceFiber* fiber, uint32_t argOnRunTo, uint32_t* argOnRun); |
| 29 | int32_t sceFiberReturnToThread(uint32_t argOnReturn, uint32_t* argOnRun); |
| 30 | |
| 31 | static void co_thunk(uint32_t argOnInitialize, uint32_t argOnRun) |
| 32 | { |
| 33 | ((void (*)(void))argOnInitialize)(); |
| 34 | } |
| 35 | |
| 36 | cothread_t co_active(void) |
| 37 | { |
| 38 | if (!co_active_) |
| 39 | { |
| 40 | sceSysmoduleLoadModule(SCE_SYSMODULE_FIBER); |
| 41 | co_active_ = (cothread_t)1; |
| 42 | } |
| 43 | return co_active_; |
| 44 | } |
| 45 | |
| 46 | cothread_t co_create(unsigned int heapsize, void (*coentry)(void)) |
| 47 | { |
| 48 | int ret; |
| 49 | SceFiber* tail_fiber = malloc(sizeof(SceFiber)); |
| 50 | char * m_ctxbuf = malloc(sizeof(char)*heapsize); |
| 51 | if (!co_active_) |
| 52 | { |
| 53 | sceSysmoduleLoadModule(SCE_SYSMODULE_FIBER); |
| 54 | co_active_ = (cothread_t)1; |
| 55 | } |
| 56 | |
| 57 | /* _sceFiberInitializeImpl */ |
| 58 | if ((ret = _sceFiberInitializeImpl( |
| 59 | tail_fiber, "tailFiber", co_thunk, |
| 60 | (uint32_t)coentry, (void*)m_ctxbuf, heapsize, NULL)) == 0) |
| 61 | return (cothread_t)tail_fiber; |
| 62 | return (cothread_t)ret; |
| 63 | } |
| 64 | |
| 65 | void co_delete(cothread_t cothread) |
| 66 | { |
| 67 | if (cothread != (cothread_t)1) |
| 68 | sceFiberFinalize((SceFiber*)cothread); |
| 69 | } |
| 70 | |
| 71 | void co_switch(cothread_t cothread) |
| 72 | { |
| 73 | uint32_t argOnReturn = 0; |
| 74 | if (cothread == (cothread_t)1) |
| 75 | { |
| 76 | co_active_ = cothread; |
| 77 | sceFiberReturnToThread(0, NULL); |
| 78 | } |
| 79 | else |
| 80 | { |
| 81 | SceFiber* theFiber = (SceFiber*)cothread; |
| 82 | co_active_ = cothread; |
| 83 | if (co_active_ == (cothread_t)1) |
| 84 | sceFiberRun(theFiber, 0, &argOnReturn); |
| 85 | else |
| 86 | sceFiberSwitch(theFiber, 0, &argOnReturn); |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | #ifdef __cplusplus |
| 91 | } |
| 92 | #endif |