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(libretro) Update cyclone intf

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This commit is contained in:
barbudreadmon 2019-08-09 11:16:42 +02:00
parent c94a872e52
commit 88898ff56c
1 changed files with 81 additions and 11 deletions
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92
src/cpu/c68000_intf.cpp
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@ -23,7 +23,7 @@ struct SekExt *SekExt[SEK_MAX] = { NULL, }, *pSekExt = NULL;
INT32 nSekActive = -1; // The cpu which is currently being emulated
INT32 nSekCyclesTotal, nSekCyclesScanline, nSekCyclesSegment, nSekCyclesDone, nSekCyclesToDo;
INT32 nSekCPUType[SEK_MAX], nSekCycles[SEK_MAX], nSekIRQPending[SEK_MAX], nSekRESETLine[SEK_MAX];
INT32 nSekCPUType[SEK_MAX], nSekCycles[SEK_MAX], nSekIRQPending[SEK_MAX], nSekRESETLine[SEK_MAX], nSekHALT[SEK_MAX];
static INT32 core_idle(INT32 cycles)
{
@ -538,25 +538,40 @@ extern "C" INT32 M68KTASCallback()
#endif
// ## SekCPUPush() / SekCPUPop() ## internal helpers for sending signals to other 68k's
static INT32 nHostCPU, nPushedCPU;
struct m68kpstack {
INT32 nHostCPU;
INT32 nPushedCPU;
};
#define MAX_PSTACK 10
static m68kpstack pstack[MAX_PSTACK];
static INT32 pstacknum = 0;
static void SekCPUPush(INT32 nCPU)
{
nPushedCPU = nCPU;
m68kpstack *p = &pstack[pstacknum++];
nHostCPU = SekGetActive();
if (pstacknum + 1 >= MAX_PSTACK) {
bprintf(0, _T("SekCPUPush(): out of stack! Possible infinite recursion? Crash pending..\n"));
}
if (nHostCPU != nPushedCPU) {
if (nHostCPU != -1) SekClose();
SekOpen(nPushedCPU);
p->nPushedCPU = nCPU;
p->nHostCPU = SekGetActive();
if (p->nHostCPU != p->nPushedCPU) {
if (p->nHostCPU != -1) SekClose();
SekOpen(p->nPushedCPU);
}
}
static void SekCPUPop()
{
if (nHostCPU != nPushedCPU) {
m68kpstack *p = &pstack[--pstacknum];
if (p->nHostCPU != p->nPushedCPU) {
SekClose();
if (nHostCPU != -1) SekOpen(nHostCPU);
if (p->nHostCPU != -1) SekOpen(p->nHostCPU);
}
}
@ -805,6 +820,7 @@ INT32 SekInit(INT32 nCount, INT32 nCPUType)
nSekCycles[nCount] = 0;
nSekIRQPending[nCount] = 0;
nSekRESETLine[nCount] = 0;
nSekHALT[nCount] = 0;
nSekCyclesTotal = 0;
nSekCyclesScanline = 0;
@ -907,6 +923,12 @@ void SekReset(INT32 nCPU)
// Open a CPU
void SekOpen(const INT32 i)
{
#if defined FBNEO_DEBUG
if (!DebugCPU_SekInitted) bprintf(PRINT_ERROR, _T("SekOpen called without init\n"));
if (i > nSekCount) bprintf(PRINT_ERROR, _T("SekOpen called with invalid index %x\n"), i);
if (nSekActive != -1) bprintf(PRINT_ERROR, _T("SekOpen called when CPU already open (%x) with index %x\n"), nSekActive, i);
#endif
if (i != nSekActive) {
nSekActive = i;
@ -1016,6 +1038,53 @@ void SekSetRESETLine(INT32 nCPU, INT32 nStatus)
SekCPUPop();
}
INT32 SekGetHALT()
{
#if defined FBNEO_DEBUG
if (!DebugCPU_SekInitted) bprintf(PRINT_ERROR, _T("SekGetHALT called without init\n"));
if (nSekActive == -1) bprintf(PRINT_ERROR, _T("SekGetHALT called when no CPU open\n"));
#endif
if (nSekActive != -1)
{
return nSekHALT[nSekActive];
}
return 0;
}
void SekSetHALT(INT32 nStatus)
{
#if defined FBNEO_DEBUG
if (!DebugCPU_SekInitted) bprintf(PRINT_ERROR, _T("SekSetHALT called without init\n"));
if (nSekActive == -1) bprintf(PRINT_ERROR, _T("SekSetHALT called when no CPU open\n"));
#endif
if (nSekActive != -1)
{
if (nSekHALT[nSekActive] && nStatus == 0)
{
bprintf(0, _T("SEK: cleared HALT.\n"));
}
nSekHALT[nSekActive] = nStatus;
}
}
void SekSetHALT(INT32 nCPU, INT32 nStatus)
{
#if defined FBNEO_DEBUG
if (!DebugCPU_SekInitted) bprintf(PRINT_ERROR, _T("SekSetHALT called without init\n"));
#endif
SekCPUPush(nCPU);
SekSetHALT(nStatus);
SekCPUPop();
}
// Set the status of an IRQ line on the active CPU
void SekSetIRQLine(const INT32 line, const INT32 nstatus)
{
@ -1145,9 +1214,9 @@ INT32 SekRun(const INT32 nCycles)
nSekCyclesDone = 0;
nSekCyclesSegment = nCycles;
if (nSekRESETLine[nSekActive])
if (nSekRESETLine[nSekActive] || nSekHALT[nSekActive])
{
nSekCyclesSegment = nCycles; // idle when RESET high
nSekCyclesSegment = nCycles; // idle when RESET high or halted
}
else
{
@ -1493,6 +1562,7 @@ INT32 SekScan(INT32 nAction)
SCAN_VAR(nSekIRQPending[i]);
SCAN_VAR(nSekCycles[i]);
SCAN_VAR(nSekRESETLine[i]);
SCAN_VAR(nSekHALT[i]);
#ifdef EMU_C68K
if ((nSekCpuCore == SEK_CORE_C68K) && nSekCPUType[i] == 0x68000) {