libs/revolution/src/os/OSSync.c


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#include <revolution.h>
#include <revolution/os.h>
#include <cstring>

#include "__os.h"

// prototypes
void __OSSystemCallVectorStart(void);
void __OSSystemCallVectorEnd(void);

#ifdef __GEKKO__
static asm void SystemCallVector(void) {
entry __OSSystemCallVectorStart
    nofralloc
    mfspr r9, HID0
    ori r10, r9, 0x8
    mtspr HID0, r10
    isync
    sync
    mtspr HID0, r9
    rfi
entry __OSSystemCallVectorEnd
    nop
}
#endif

void __OSInitSystemCall(void) {
    void* addr = (void*)OSPhysicalToCached(0xC00);

    memcpy(addr, __OSSystemCallVectorStart, (u32)&__OSSystemCallVectorEnd - (u32)&__OSSystemCallVectorStart);
    DCFlushRangeNoSync(addr, 0x100);
    __sync();
    ICInvalidateRange(addr, 0x100);
}