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#include "NdevExi2A/DebuggerDriver.h"
#include "NdevExi2A/exi2.h"
#include <exi.h>
#include <os.h>
static s32 __DBRecvDataSize;
static u32 __DBRecvMail;
static u8 EXIInputFlag;
static MtrCallback __DBDbgCallback;
static MtrCallback __DBMtrCallback;
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 __DBMtrHandler(s32 param_0, OSContext* ctx) {
EXIInputFlag = 1;
if (__DBMtrCallback != (void*)NULL) {
__DBMtrCallback(0, ctx);
}
}
void __DBIntrHandler(s16 param_0, OSContext* ctx) {
*__PIRegs = 0x1000;
if (__DBDbgCallback != NULL) {
__DBDbgCallback(param_0, ctx);
}
}
void __DBCheckMailBox(void) {
u8 sp08;
u32 mail;
sp08 = __DBReadUSB_CSR();
if (!(sp08 & 0x8)) {
__DBReadMailbox(&mail);
if (ODEMUIsValidMail(mail)) {
__DBRecvMail = mail;
__DBRecvDataSize = ODEMUGetSize(mail);
EXIInputFlag = 1;
}
}
}
u8 __DBReadUSB_CSR() {
u8 result;
__DBEXIReadReg(0x34000000, &result, 1);
return result;
}
void DBInitComm(u8** a, MtrCallback callback) {
BOOL interrupts = OSDisableInterrupts();
//pEXIInputFlag = &EXIInputFlag;
*a = &EXIInputFlag;
__DBMtrCallback = callback;
__DBEXIInit();
OSRestoreInterrupts(interrupts);
}
void DBInitInterrupts(void) {
__OSMaskInterrupts(0x18000);
__OSMaskInterrupts(0x40);
__DBDbgCallback = &__DBMtrHandler;
__OSSetInterruptHandler(0x19, __DBIntrHandler);
__OSUnmaskInterrupts(0x40);
}
u32 DBQueryData(void) {
BOOL interrupts;
EXIInputFlag = 0;
if (__DBRecvDataSize == 0) {
interrupts = OSDisableInterrupts();
__DBCheckMailBox();
OSRestoreInterrupts(interrupts);
}
return __DBRecvDataSize;
}
BOOL DBRead(u32* buffer, s32 count) {
u32 v;
u32 interrupts = OSDisableInterrupts();
v = ODEMUGetPc2NngcOffset(__DBRecvMail) + 0x1000;
__DBRead(v, buffer, ROUND_UP(count, 4));
__DBRecvDataSize = 0;
EXIInputFlag = 0;
OSRestoreInterrupts(interrupts);
return 0;
}
BOOL DBWrite(void* src, u32 size) {
BOOL interrupts;
u32 v;
u32 mail;
interrupts = OSDisableInterrupts();
__DBWaitForSendMail();
SendCount++;
v = (SendCount & 0x1) ? 0x800 : 0;
while (!__DBWrite(v, src, ROUND_UP(size, 4)))
;
__DBWaitForSendMail();
mail = ODEMUGenMailData(SendCount, size);
while (!__DBWriteMailbox(mail))
;
__DBWaitForSendMail();
OSRestoreInterrupts(interrupts);
return 0;
}
void __DBWaitForSendMail() {
u8 busyFlag;
do {
busyFlag = __DBReadUSB_CSR();
} while (busyFlag & 0x4);
}
void DBOpen(void) {}
void DBClose(void) {}
static u32 ODEMUGetSize(u32 mail) {
return mail & 0x1FFF;
}
BOOL ODEMUIsValidMail(u32 mail) {
return (mail & 0x1F000000) == 0x1F000000;
}
u32 ODEMUGetPc2NngcOffset(u32 v) {
return ODEMUGetPage(v) & 0x1 ? 0x800 : 0;
}
u32 ODEMUGetPage(u32 v) {
return (v & 0xFF0000) >> 16;
}
u32 ODEMUGenMailData(u32 v, u32 size) {
return (0x1f000000 | ((v << 16) & 0xFF0000)) | (size & 0x1FFF);
}
void __DBReadMailbox(u32* out) {
__DBEXIReadReg(0x34000200, out, 4);
}
BOOL __DBRead(u32 param_0, void* dst, u32 count) {
return __DBEXIReadRam(((param_0 + 0xD10000) << 6) & 0x3FFFFF00, dst, count);
}
BOOL __DBWriteMailbox(u32 val) {
return __DBEXIWriteReg(0xB4000100, &val, 0x4);
}
BOOL __DBWrite(u32 param_0, void* dst, u32 count) {
return __DBEXIWriteRam((((param_0 + 0xD10000) << 6) & 0x3FFFFF00) | 0x80000000, dst, count);
}
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