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#include "odemuexi2/DebuggerDriver.h"
#include "dolphin/os/OS.h"
static MTRCallbackType MTRCallback;
static void (*DBGCallback)(u32, OSContext*);
static u32 SendMailData;
static s32 RecvDataLeng;
static u8* pEXIInputFlag;
static u8 EXIInputFlag;
static u8 SendCount = 0x80;
#define IS_TRUE(x) ((x) != FALSE)
#define IS_FALSE(x) !IS_TRUE(x)
#define ROUND_UP(x, align) (((x) + (align)-1) & (-(align)))
void DBGEXIInit() {
__OSMaskInterrupts(0x18000);
__EXIRegs[10] = 0;
}
static u32 DBGEXISelect(u32 v) {
u32 regs = __EXIRegs[10];
regs &= 0x405;
regs |= 0x80 | (v << 4);
__EXIRegs[10] = regs;
return TRUE;
}
BOOL DBGEXIDeselect(void) {
__EXIRegs[10] &= 0x405;
return TRUE;
}
static BOOL DBGEXISync() {
while (__EXIRegs[13] & 1)
;
return TRUE;
}
static BOOL DBGEXIImm(void* buffer, s32 bytecounter, u32 write) {
u8* tempPointer;
u32 writeOutValue;
int i;
if (write) {
tempPointer = buffer;
writeOutValue = 0;
for (i = 0; i < bytecounter; i++) {
u8* temp = ((u8*)buffer) + i;
writeOutValue |= *temp << ((3 - i) << 3);
}
__EXIRegs[14] = writeOutValue;
}
__EXIRegs[13] = 1 | write << 2 | (bytecounter - 1) << 4;
DBGEXISync();
if (!write) {
writeOutValue = __EXIRegs[14];
tempPointer = buffer;
for (i = 0; i < bytecounter; i++) {
*tempPointer++ = writeOutValue >> ((3 - i) << 3);
}
}
return TRUE;
}
static BOOL DBGWriteMailbox(u32 p1) {
u32 cmd = 0xc0000000;
u32 v;
u32 base = p1;
BOOL total = FALSE;
DBGEXISelect(4);
v = (base & 0x1fffffff) | (cmd);
total |= IS_FALSE(DBGEXIImm(&v, sizeof(v), 1));
total |= IS_FALSE(DBGEXISync());
total |= IS_FALSE(DBGEXIDeselect());
return IS_FALSE(total);
}
#pragma dont_inline on
static BOOL DBGReadMailbox(u32* p1) {
BOOL total = FALSE;
u32 v;
DBGEXISelect(4);
v = 0x60000000;
total |= IS_FALSE(DBGEXIImm(&v, 2, 1));
total |= IS_FALSE(DBGEXISync());
total |= IS_FALSE(DBGEXIImm(p1, 4, 0));
total |= IS_FALSE(DBGEXISync());
total |= IS_FALSE(DBGEXIDeselect());
return IS_FALSE(total);
}
#pragma dont_inline reset
static BOOL DBGRead(u32 count, u32* buffer, s32 param3) {
BOOL total = FALSE;
u32* buf_p = (u32*)buffer;
u32 v1;
u32 v;
DBGEXISelect(4);
v1 = (count & 0x1fffc) << 8 | 0x20000000;
total |= IS_FALSE(DBGEXIImm(&v1, sizeof(v1), 1));
total |= IS_FALSE(DBGEXISync());
while (param3) {
total |= IS_FALSE(DBGEXIImm(&v, sizeof(v), 0));
total |= IS_FALSE(DBGEXISync());
*buf_p++ = v;
param3 -= 4;
if (param3 < 0) {
param3 = 0;
}
}
total |= IS_FALSE(DBGEXIDeselect());
return IS_FALSE(total);
}
static BOOL DBGWrite(u32 count, void* buffer, s32 param3) {
BOOL total = FALSE;
u32* buf_p = (u32*)buffer;
u32 v1;
u32 v;
DBGEXISelect(4);
v1 = (count & 0x1fffc) << 8 | 0xa0000000;
total |= IS_FALSE(DBGEXIImm(&v1, sizeof(v1), 1));
total |= IS_FALSE(DBGEXISync());
while (param3 != 0) {
v = *buf_p++;
total |= IS_FALSE(DBGEXIImm(&v, sizeof(v), 1));
total |= IS_FALSE(DBGEXISync());
param3 -= 4;
if (param3 < 0) {
param3 = 0;
}
}
total |= IS_FALSE(DBGEXIDeselect());
return IS_FALSE(total);
}
inline static BOOL _DBGReadStatus(u32* p1) {
BOOL total = FALSE;
u32 v;
DBGEXISelect(4);
v = 1 << 30;
total |= IS_FALSE(DBGEXIImm(&v, 2, 1));
total |= IS_FALSE(DBGEXISync());
total |= IS_FALSE(DBGEXIImm(p1, 4, 0));
total |= IS_FALSE(DBGEXISync());
total |= IS_FALSE(DBGEXIDeselect());
return IS_FALSE(total);
}
#pragma dont_inline on
static BOOL DBGReadStatus(u32* p1) {
return _DBGReadStatus(p1);
}
#pragma dont_inline reset
static void MWCallback(u32 a, OSContext* b) {
EXIInputFlag = TRUE;
if (MTRCallback) {
MTRCallback(0);
}
}
static void DBGHandler(s16 a, OSContext* b) {
*__PIRegs = 0x1000;
if (DBGCallback) {
DBGCallback(a, b);
}
}
void DBInitComm(u8** a, MTRCallbackType b) {
BOOL interrupts = OSDisableInterrupts();
{
pEXIInputFlag = (u8*)EXIInputFlag;
pEXIInputFlag = &EXIInputFlag;
*a = pEXIInputFlag;
MTRCallback = b;
DBGEXIInit();
}
OSRestoreInterrupts(interrupts);
}
void DBInitInterrupts(void) {
__OSMaskInterrupts(0x18000);
__OSMaskInterrupts(0x40);
DBGCallback = &MWCallback;
__OSSetInterruptHandler(0x19, DBGHandler);
__OSUnmaskInterrupts(0x40);
}
static void CheckMailBox(void) {
u32 v;
DBGReadStatus(&v);
if (v & 1) {
DBGReadMailbox(&v);
v &= 0x1fffffff;
if ((v & 0x1f000000) == 0x1f000000) {
SendMailData = v;
RecvDataLeng = v & 0x7fff;
EXIInputFlag = 1;
}
}
}
u32 DBQueryData(void) {
EXIInputFlag = 0;
if (!RecvDataLeng) {
BOOL interrupts = OSDisableInterrupts();
CheckMailBox();
OSRestoreInterrupts(interrupts);
}
return RecvDataLeng;
}
BOOL DBRead(u32* buffer, s32 count) {
u32 interrupts = OSDisableInterrupts();
u32 v = SendMailData & 0x10000 ? 0x1000 : 0;
DBGRead(v + 0x1e000, buffer, ROUND_UP(count, 4));
RecvDataLeng = 0;
EXIInputFlag = 0;
OSRestoreInterrupts(interrupts);
return 0;
}
BOOL DBWrite(void* src, u32 size) {
u32 v;
u32 busyFlag;
BOOL interrupts = OSDisableInterrupts();
do {
_DBGReadStatus(&busyFlag);
} while (busyFlag & 2);
SendCount++;
v = ((SendCount & 1) ? 0x1000 : 0);
while (!DBGWrite(v | 0x1c000, src, ROUND_UP(size, 4)))
;
do {
_DBGReadStatus(&busyFlag);
} while (busyFlag & 2);
v = SendCount;
while (!DBGWriteMailbox((0x1f000000) | v << 0x10 | size))
;
do {
while (!_DBGReadStatus(&busyFlag))
;
} while (busyFlag & 2);
OSRestoreInterrupts(interrupts);
return 0;
}
void DBOpen(void) {}
void DBClose(void) {}
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