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/*
libco.win (2016-09-06)
authors: frangarcj
license: public domain
*/
#define LIBCO_C
#include <libco.h>
#include <stdlib.h>
#include <psp2/sysmodule.h>
#ifdef __cplusplus
extern "C" {
#endif
static thread_local cothread_t co_active_ = 0;
typedef struct SceFiber {
char reserved[128];
} SceFiber __attribute__( ( aligned ( 8 ) ) ) ;
int32_t _sceFiberInitializeImpl(SceFiber* fiber, char* name, void* entry, uint32_t argOnInitialize, void* addrContext, int32_t sizeContext, void* params);
int32_t sceFiberFinalize(SceFiber* fiber);
int32_t sceFiberRun(SceFiber* fiber, uint32_t argOnRunTo, uint32_t* argOnRun);
int32_t sceFiberSwitch(SceFiber* fiber, uint32_t argOnRunTo, uint32_t* argOnRun);
int32_t sceFiberReturnToThread(uint32_t argOnReturn, uint32_t* argOnRun);
void co_thunk(uint32_t argOnInitialize, uint32_t argOnRun)
{
((void (*)(void))argOnInitialize)();
}
cothread_t co_active(void)
{
if(!co_active_)
{
sceSysmoduleLoadModule(SCE_SYSMODULE_FIBER);
co_active_ = (cothread_t)1;
}
return co_active_;
}
cothread_t co_create(unsigned int heapsize, void (*coentry)(void))
{
SceFiber* tailFiber = malloc(sizeof(SceFiber));
char * m_contextBuffer = malloc(sizeof(char)*heapsize);
if(!co_active_)
{
sceSysmoduleLoadModule(SCE_SYSMODULE_FIBER);
co_active_ = (cothread_t)1;
}
//_sceFiberInitializeImpl
int ret = _sceFiberInitializeImpl(tailFiber, "tailFiber", co_thunk, (uint32_t)coentry, (void*) m_contextBuffer, heapsize, NULL);
if(ret==0){
return (cothread_t)tailFiber;
}else{
return (cothread_t)ret;
}
}
void co_delete(cothread_t cothread)
{
if(cothread == (cothread_t)1){
return;
}
sceFiberFinalize((SceFiber*)cothread);
}
void co_switch(cothread_t cothread)
{
uint32_t argOnReturn = 0;
if(cothread == (cothread_t)1){
co_active_ = cothread;
sceFiberReturnToThread(0, NULL);
}else{
SceFiber* theFiber = (SceFiber*)cothread;
if(co_active_ == (cothread_t)1){
co_active_ = cothread;
sceFiberRun(theFiber, 0, &argOnReturn);
}else{
co_active_ = cothread;
sceFiberSwitch(theFiber, 0, &argOnReturn);
}
}
}
#ifdef __cplusplus
}
#endif
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