#include "debugger.h" #include "se3208.h" /* SE3208 CPU Emulator by ElSemi For information about this CPU: www.adc.co.kr */ typedef struct { //GPR UINT32 R[8]; //SPR UINT32 PC; UINT32 SR; UINT32 SP; UINT32 ER; UINT32 PPC; int (*irq_callback)(int irqline); UINT8 IRQ; UINT8 NMI; } _SE3208Context; #define FLAG_C 0x0080 #define FLAG_V 0x0010 #define FLAG_S 0x0020 #define FLAG_Z 0x0040 #define FLAG_M 0x0200 #define FLAG_E 0x0800 #define FLAG_AUT 0x1000 #define FLAG_ENI 0x2000 #define FLAG_NMI 0x4000 static _SE3208Context Context; static int SE3208_ICount; #define CLRFLAG(f) Context.SR&=~(f); #define SETFLAG(f) Context.SR|=(f); #define TESTFLAG(f) (Context.SR&(f)) #define EXTRACT(val,sbit,ebit) (((val)>>sbit)&((1<<((ebit-sbit)+1))-1)) #define SEX8(val) ((val&0x80)?(val|0xFFFFFF00):(val&0xFF)) #define SEX16(val) ((val&0x8000)?(val|0xFFFF0000):(val&0xFFFF)) #define ZEX8(val) ((val)&0xFF) #define ZEX16(val) ((val)&0xFFFF) #define SEX(bits,val) ((val)&(1<<(bits-1))?((val)|(~((1<>8)&0xff); program_write_byte_32le(address+2, (data>>16)&0xff); program_write_byte_32le(address+3, (data>>24)&0xff); } else { program_write_dword_32le(address, data); } } INLINE void write_word_unaligned(UINT32 address, UINT16 data) { if (address & 1) { program_write_byte_32le(address, data & 0xff); program_write_byte_32le(address+1, (data>>8)&0xff); } else { program_write_word_32le(address, data); } } INLINE UINT8 SE3208_Read8(UINT32 addr) { return program_read_byte_32le(addr); } INLINE UINT16 SE3208_Read16(UINT32 addr) { return read_word_unaligned(addr); } INLINE UINT32 SE3208_Read32(UINT32 addr) { return read_dword_unaligned(addr); } INLINE void SE3208_Write8(UINT32 addr,UINT8 val) { program_write_byte_32le(addr,val); } INLINE void SE3208_Write16(UINT32 addr,UINT16 val) { write_word_unaligned(addr,val); } INLINE void SE3208_Write32(UINT32 addr,UINT32 val) { write_dword_unaligned(addr,val); } INLINE UINT32 AddWithFlags(UINT32 a,UINT32 b) { UINT32 r=a+b; CLRFLAG(FLAG_Z|FLAG_C|FLAG_V|FLAG_S); if(!r) SETFLAG(FLAG_Z); if(r&0x80000000) SETFLAG(FLAG_S); if(((((a&b)|(~r&(a|b)))>>31))&1) SETFLAG(FLAG_C); if(((((a^r)&(b^r))>>31))&1) SETFLAG(FLAG_V); return r; } INLINE UINT32 SubWithFlags(UINT32 a,UINT32 b) //a-b { UINT32 r=a-b; CLRFLAG(FLAG_Z|FLAG_C|FLAG_V|FLAG_S); if(!r) SETFLAG(FLAG_Z); if(r&0x80000000) SETFLAG(FLAG_S); if((((b&r)|(~a&(b|r)))>>31)&1) SETFLAG(FLAG_C); if((((b^a)&(r^a))>>31)&1) SETFLAG(FLAG_V); return r; } INLINE UINT32 AdcWithFlags(UINT32 a,UINT32 b) { UINT32 C=(Context.SR&FLAG_C)?1:0; UINT32 r=a+b+C; CLRFLAG(FLAG_Z|FLAG_C|FLAG_V|FLAG_S); if(!r) SETFLAG(FLAG_Z); if(r&0x80000000) SETFLAG(FLAG_S); if(((((a&b)|(~r&(a|b)))>>31))&1) SETFLAG(FLAG_C); if(((((a^r)&(b^r))>>31))&1) SETFLAG(FLAG_V); return r; } INLINE UINT32 SbcWithFlags(UINT32 a,UINT32 b) { UINT32 C=(Context.SR&FLAG_C)?1:0; UINT32 r=a-b-C; CLRFLAG(FLAG_Z|FLAG_C|FLAG_V|FLAG_S); if(!r) SETFLAG(FLAG_Z); if(r&0x80000000) SETFLAG(FLAG_S); if((((b&r)|(~a&(b|r)))>>31)&1) SETFLAG(FLAG_C); if((((b^a)&(r^a))>>31)&1) SETFLAG(FLAG_V); return r; } INLINE UINT32 MulWithFlags(UINT32 a,UINT32 b) { INT64 r=(INT64) a*(INT64) b; CLRFLAG(FLAG_V); if(r>>32) SETFLAG(FLAG_V); return (UINT32) (r&0xffffffff); } INLINE UINT32 NegWithFlags(UINT32 a) { return SubWithFlags(0,a); } INLINE UINT32 AsrWithFlags(UINT32 Val, UINT8 By) { signed int v=(signed int) Val; v>>=By; CLRFLAG(FLAG_Z|FLAG_C|FLAG_V|FLAG_S); if(!v) SETFLAG(FLAG_Z); if(v&0x80000000) SETFLAG(FLAG_S); if(Val&(1<<(By-1))) SETFLAG(FLAG_C); return (UINT32) v; } INLINE UINT32 LsrWithFlags(UINT32 Val, UINT8 By) { UINT32 v=Val; v>>=By; CLRFLAG(FLAG_Z|FLAG_C|FLAG_V|FLAG_S); if(!v) SETFLAG(FLAG_Z); if(v&0x80000000) SETFLAG(FLAG_S); if(Val&(1<<(By-1))) SETFLAG(FLAG_C); return v; } INLINE UINT32 AslWithFlags(UINT32 Val, UINT8 By) { UINT32 v=Val; v<<=By; CLRFLAG(FLAG_Z|FLAG_C|FLAG_V|FLAG_S); if(!v) SETFLAG(FLAG_Z); if(v&0x80000000) SETFLAG(FLAG_S); if(Val&(1<<(32-By))) SETFLAG(FLAG_C); return v; } INST(INVALIDOP) { //assert(false); } INST(LDB) { UINT32 Offset=EXTRACT(Opcode,0,4); UINT32 Index=EXTRACT(Opcode,5,7); UINT32 SrcDst=EXTRACT(Opcode,8,10); UINT32 Val; if(Index) Index=Context.R[Index]; else Index=0; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,27)<<4)|(Offset&0xf); Val=SE3208_Read8(Index+Offset); Context.R[SrcDst]=SEX8(Val); CLRFLAG(FLAG_E); } INST(STB) { UINT32 Offset=EXTRACT(Opcode,0,4); UINT32 Index=EXTRACT(Opcode,5,7); UINT32 SrcDst=EXTRACT(Opcode,8,10); if(Index) Index=Context.R[Index]; else Index=0; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,27)<<4)|(Offset&0xf); SE3208_Write8(Index+Offset,ZEX8(Context.R[SrcDst])); CLRFLAG(FLAG_E); } INST(LDS) { UINT32 Offset=EXTRACT(Opcode,0,4); UINT32 Index=EXTRACT(Opcode,5,7); UINT32 SrcDst=EXTRACT(Opcode,8,10); UINT32 Val; Offset<<=1; if(Index) Index=Context.R[Index]; else Index=0; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,27)<<4)|(Offset&0xf); Val=SE3208_Read16(Index+Offset); Context.R[SrcDst]=SEX16(Val); CLRFLAG(FLAG_E); } INST(STS) { UINT32 Offset=EXTRACT(Opcode,0,4); UINT32 Index=EXTRACT(Opcode,5,7); UINT32 SrcDst=EXTRACT(Opcode,8,10); Offset<<=1; if(Index) Index=Context.R[Index]; else Index=0; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,27)<<4)|(Offset&0xf); SE3208_Write16(Index+Offset,ZEX16(Context.R[SrcDst])); CLRFLAG(FLAG_E); } INST(LD) { UINT32 Offset=EXTRACT(Opcode,0,4); UINT32 Index=EXTRACT(Opcode,5,7); UINT32 SrcDst=EXTRACT(Opcode,8,10); Offset<<=2; if(Index) Index=Context.R[Index]; else Index=0; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,27)<<4)|(Offset&0xf); Context.R[SrcDst]=SE3208_Read32(Index+Offset); CLRFLAG(FLAG_E); } INST(ST) { UINT32 Offset=EXTRACT(Opcode,0,4); UINT32 Index=EXTRACT(Opcode,5,7); UINT32 SrcDst=EXTRACT(Opcode,8,10); Offset<<=2; if(Index) Index=Context.R[Index]; else Index=0; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,27)<<4)|(Offset&0xf); SE3208_Write32(Index+Offset,Context.R[SrcDst]); CLRFLAG(FLAG_E); } INST(LDBU) { UINT32 Offset=EXTRACT(Opcode,0,4); UINT32 Index=EXTRACT(Opcode,5,7); UINT32 SrcDst=EXTRACT(Opcode,8,10); UINT32 Val; if(Index) Index=Context.R[Index]; else Index=0; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,27)<<4)|(Offset&0xf); Val=SE3208_Read8(Index+Offset); Context.R[SrcDst]=ZEX8(Val); CLRFLAG(FLAG_E); } INST(LDSU) { UINT32 Offset=EXTRACT(Opcode,0,4); UINT32 Index=EXTRACT(Opcode,5,7); UINT32 SrcDst=EXTRACT(Opcode,8,10); UINT32 Val; Offset<<=1; if(Index) Index=Context.R[Index]; else Index=0; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,27)<<4)|(Offset&0xf); Val=SE3208_Read16(Index+Offset); Context.R[SrcDst]=ZEX16(Val); CLRFLAG(FLAG_E); } INST(LERI) { UINT32 Imm=EXTRACT(Opcode,0,13); if(TESTFLAG(FLAG_E)) Context.ER=(EXTRACT(Context.ER,0,17)<<14)|Imm; else Context.ER=SEX(14,Imm); SETFLAG(FLAG_E); } INST(LDSP) { UINT32 Offset=EXTRACT(Opcode,0,7); UINT32 Index=Context.SP; UINT32 SrcDst=EXTRACT(Opcode,8,10); Offset<<=2; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,27)<<4)|(Offset&0xf); Context.R[SrcDst]=SE3208_Read32(Index+Offset); CLRFLAG(FLAG_E); } INST(STSP) { UINT32 Offset=EXTRACT(Opcode,0,7); UINT32 Index=Context.SP; UINT32 SrcDst=EXTRACT(Opcode,8,10); Offset<<=2; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,27)<<4)|(Offset&0xf); SE3208_Write32(Index+Offset,Context.R[SrcDst]); CLRFLAG(FLAG_E); } static void PushVal(UINT32 Val) { Context.SP-=4; SE3208_Write32(Context.SP,Val); } static UINT32 PopVal(void) { UINT32 Val=SE3208_Read32(Context.SP); Context.SP+=4; return Val; } INST(PUSH) { UINT32 Set=EXTRACT(Opcode,0,10); if(Set&(1<<10)) PushVal(Context.PC); if(Set&(1<<9)) PushVal(Context.SR); if(Set&(1<<8)) PushVal(Context.ER); if(Set&(1<<7)) PushVal(Context.R[7]); if(Set&(1<<6)) PushVal(Context.R[6]); if(Set&(1<<5)) PushVal(Context.R[5]); if(Set&(1<<4)) PushVal(Context.R[4]); if(Set&(1<<3)) PushVal(Context.R[3]); if(Set&(1<<2)) PushVal(Context.R[2]); if(Set&(1<<1)) PushVal(Context.R[1]); if(Set&(1<<0)) PushVal(Context.R[0]); } INST(POP) { UINT32 Set=EXTRACT(Opcode,0,10); if(Set&(1<<0)) Context.R[0]=PopVal(); if(Set&(1<<1)) Context.R[1]=PopVal(); if(Set&(1<<2)) Context.R[2]=PopVal(); if(Set&(1<<3)) Context.R[3]=PopVal(); if(Set&(1<<4)) Context.R[4]=PopVal(); if(Set&(1<<5)) Context.R[5]=PopVal(); if(Set&(1<<6)) Context.R[6]=PopVal(); if(Set&(1<<7)) Context.R[7]=PopVal(); if(Set&(1<<8)) Context.ER=PopVal(); if(Set&(1<<9)) Context.SR=PopVal(); if(Set&(1<<10)) { Context.PC=PopVal()-2; //PC automatically incresases by 2 change_pc(Context.PC+2); } } INST(LEATOSP) { UINT32 Offset=EXTRACT(Opcode,9,12); UINT32 Index=EXTRACT(Opcode,3,5); if(Index) Index=Context.R[Index]; else Index=0; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,27)<<4)|(Offset&0xf); else Offset=SEX(4,Offset); Context.SP=Index+Offset; CLRFLAG(FLAG_E); } INST(LEAFROMSP) { UINT32 Offset=EXTRACT(Opcode,9,12); UINT32 Index=EXTRACT(Opcode,3,5); if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,27)<<4)|(Offset&0xf); else Offset=SEX(4,Offset); Context.R[Index]=Context.SP+Offset; CLRFLAG(FLAG_E); } INST(LEASPTOSP) { UINT32 Offset=EXTRACT(Opcode,0,7); Offset<<=2; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,23)<<8)|(Offset&0xff); else Offset=SEX(10,Offset); Context.SP=Context.SP+Offset; CLRFLAG(FLAG_E); } INST(MOV) { UINT32 Src=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,9,11); Context.R[Dst]=Context.R[Src]; } INST(LDI) { UINT32 Dst=EXTRACT(Opcode,8,10); UINT32 Imm=EXTRACT(Opcode,0,7); if(TESTFLAG(FLAG_E)) Imm=(EXTRACT(Context.ER,0,27)<<4)|(Imm&0xf); else Imm=SEX8(Imm); Context.R[Dst]=Imm; CLRFLAG(FLAG_E); } INST(LDBSP) { UINT32 Offset=EXTRACT(Opcode,0,3); UINT32 Index=Context.SP; UINT32 SrcDst=EXTRACT(Opcode,4,6); UINT32 Val; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,27)<<4)|(Offset&0xf); Val=SE3208_Read8(Index+Offset); Context.R[SrcDst]=SEX8(Val); CLRFLAG(FLAG_E); } INST(STBSP) { UINT32 Offset=EXTRACT(Opcode,0,3); UINT32 Index=Context.SP; UINT32 SrcDst=EXTRACT(Opcode,4,6); if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,27)<<4)|(Offset&0xf); SE3208_Write8(Index+Offset,ZEX8(Context.R[SrcDst])); CLRFLAG(FLAG_E); } INST(LDSSP) { UINT32 Offset=EXTRACT(Opcode,0,3); UINT32 Index=Context.SP; UINT32 SrcDst=EXTRACT(Opcode,4,6); UINT32 Val; Offset<<=1; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,27)<<4)|(Offset&0xf); Val=SE3208_Read16(Index+Offset); Context.R[SrcDst]=SEX16(Val); CLRFLAG(FLAG_E); } INST(STSSP) { UINT32 Offset=EXTRACT(Opcode,0,3); UINT32 Index=Context.SP; UINT32 SrcDst=EXTRACT(Opcode,4,6); Offset<<=1; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,27)<<4)|(Offset&0xf); SE3208_Write16(Index+Offset,ZEX16(Context.R[SrcDst])); CLRFLAG(FLAG_E); } INST(LDBUSP) { UINT32 Offset=EXTRACT(Opcode,0,3); UINT32 Index=Context.SP; UINT32 SrcDst=EXTRACT(Opcode,4,6); UINT32 Val; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,27)<<4)|(Offset&0xf); Val=SE3208_Read8(Index+Offset); Context.R[SrcDst]=ZEX8(Val); CLRFLAG(FLAG_E); } INST(LDSUSP) { UINT32 Offset=EXTRACT(Opcode,0,3); UINT32 Index=Context.SP; UINT32 SrcDst=EXTRACT(Opcode,4,6); UINT32 Val; Offset<<=1; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,27)<<4)|(Offset&0xf); Val=SE3208_Read16(Index+Offset); Context.R[SrcDst]=ZEX16(Val); CLRFLAG(FLAG_E); } INST(ADDI) { UINT32 Imm=EXTRACT(Opcode,9,12); UINT32 Src=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); if(TESTFLAG(FLAG_E)) Imm=(EXTRACT(Context.ER,0,27)<<4)|(Imm&0xf); else Imm=SEX(4,Imm); Context.R[Dst]=AddWithFlags(Context.R[Src],Imm); CLRFLAG(FLAG_E); } INST(SUBI) { UINT32 Imm=EXTRACT(Opcode,9,12); UINT32 Src=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); if(TESTFLAG(FLAG_E)) Imm=(EXTRACT(Context.ER,0,27)<<4)|(Imm&0xf); else Imm=SEX(4,Imm); Context.R[Dst]=SubWithFlags(Context.R[Src],Imm); CLRFLAG(FLAG_E); } INST(ADCI) { UINT32 Imm=EXTRACT(Opcode,9,12); UINT32 Src=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); if(TESTFLAG(FLAG_E)) Imm=(EXTRACT(Context.ER,0,27)<<4)|(Imm&0xf); else Imm=SEX(4,Imm); Context.R[Dst]=AdcWithFlags(Context.R[Src],Imm); CLRFLAG(FLAG_E); } INST(SBCI) { UINT32 Imm=EXTRACT(Opcode,9,12); UINT32 Src=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); if(TESTFLAG(FLAG_E)) Imm=(EXTRACT(Context.ER,0,27)<<4)|(Imm&0xf); else Imm=SEX(4,Imm); Context.R[Dst]=SbcWithFlags(Context.R[Src],Imm); CLRFLAG(FLAG_E); } INST(ANDI) { UINT32 Imm=EXTRACT(Opcode,9,12); UINT32 Src=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); if(TESTFLAG(FLAG_E)) Imm=(EXTRACT(Context.ER,0,27)<<4)|(Imm&0xf); else Imm=SEX(4,Imm); Context.R[Dst]=Context.R[Src]&Imm; CLRFLAG(FLAG_S|FLAG_Z|FLAG_E); if(!Context.R[Dst]) SETFLAG(FLAG_Z); if(Context.R[Dst]&0x80000000) SETFLAG(FLAG_S); } INST(ORI) { UINT32 Imm=EXTRACT(Opcode,9,12); UINT32 Src=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); if(TESTFLAG(FLAG_E)) Imm=(EXTRACT(Context.ER,0,27)<<4)|(Imm&0xf); else Imm=SEX(4,Imm); Context.R[Dst]=Context.R[Src]|Imm; CLRFLAG(FLAG_S|FLAG_Z|FLAG_E); if(!Context.R[Dst]) SETFLAG(FLAG_Z); if(Context.R[Dst]&0x80000000) SETFLAG(FLAG_S); } INST(XORI) { UINT32 Imm=EXTRACT(Opcode,9,12); UINT32 Src=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); if(TESTFLAG(FLAG_E)) Imm=(EXTRACT(Context.ER,0,27)<<4)|(Imm&0xf); else Imm=SEX(4,Imm); Context.R[Dst]=Context.R[Src]^Imm; CLRFLAG(FLAG_S|FLAG_Z|FLAG_E); if(!Context.R[Dst]) SETFLAG(FLAG_Z); if(Context.R[Dst]&0x80000000) SETFLAG(FLAG_S); } INST(CMPI) { UINT32 Imm=EXTRACT(Opcode,9,12); UINT32 Src=EXTRACT(Opcode,3,5); if(TESTFLAG(FLAG_E)) Imm=(EXTRACT(Context.ER,0,27)<<4)|(Imm&0xf); else Imm=SEX(4,Imm); SubWithFlags(Context.R[Src],Imm); CLRFLAG(FLAG_E); } INST(TSTI) { UINT32 Imm=EXTRACT(Opcode,9,12); UINT32 Src=EXTRACT(Opcode,3,5); UINT32 Dst; if(TESTFLAG(FLAG_E)) Imm=(EXTRACT(Context.ER,0,27)<<4)|(Imm&0xf); else Imm=SEX(4,Imm); Dst=Context.R[Src]&Imm; CLRFLAG(FLAG_S|FLAG_Z|FLAG_E); if(!Dst) SETFLAG(FLAG_Z); if(Dst&0x80000000) SETFLAG(FLAG_S); } INST(ADD) { UINT32 Src2=EXTRACT(Opcode,9,11); UINT32 Src1=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); Context.R[Dst]=AddWithFlags(Context.R[Src1],Context.R[Src2]); } INST(SUB) { UINT32 Src2=EXTRACT(Opcode,9,11); UINT32 Src1=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); Context.R[Dst]=SubWithFlags(Context.R[Src1],Context.R[Src2]); } INST(ADC) { UINT32 Src2=EXTRACT(Opcode,9,11); UINT32 Src1=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); Context.R[Dst]=AdcWithFlags(Context.R[Src1],Context.R[Src2]); } INST(SBC) { UINT32 Src2=EXTRACT(Opcode,9,11); UINT32 Src1=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); Context.R[Dst]=SbcWithFlags(Context.R[Src1],Context.R[Src2]); } INST(AND) { UINT32 Src2=EXTRACT(Opcode,9,11); UINT32 Src1=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); Context.R[Dst]=Context.R[Src1]&Context.R[Src2]; CLRFLAG(FLAG_S|FLAG_Z); if(!Context.R[Dst]) SETFLAG(FLAG_Z); if(Context.R[Dst]&0x80000000) SETFLAG(FLAG_S); } INST(OR) { UINT32 Src2=EXTRACT(Opcode,9,11); UINT32 Src1=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); Context.R[Dst]=Context.R[Src1]|Context.R[Src2]; CLRFLAG(FLAG_S|FLAG_Z); if(!Context.R[Dst]) SETFLAG(FLAG_Z); if(Context.R[Dst]&0x80000000) SETFLAG(FLAG_S); } INST(XOR) { UINT32 Src2=EXTRACT(Opcode,9,11); UINT32 Src1=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); Context.R[Dst]=Context.R[Src1]^Context.R[Src2]; CLRFLAG(FLAG_S|FLAG_Z); if(!Context.R[Dst]) SETFLAG(FLAG_Z); if(Context.R[Dst]&0x80000000) SETFLAG(FLAG_S); } INST(CMP) { UINT32 Src2=EXTRACT(Opcode,9,11); UINT32 Src1=EXTRACT(Opcode,3,5); SubWithFlags(Context.R[Src1],Context.R[Src2]); } INST(TST) { UINT32 Src2=EXTRACT(Opcode,9,11); UINT32 Src1=EXTRACT(Opcode,3,5); UINT32 Dst; Dst=Context.R[Src1]&Context.R[Src2]; CLRFLAG(FLAG_S|FLAG_Z); if(!Dst) SETFLAG(FLAG_Z); if(Dst&0x80000000) SETFLAG(FLAG_S); } INST(MULS) { UINT32 Src2=EXTRACT(Opcode,6,8); UINT32 Src1=EXTRACT(Opcode,3,5); UINT32 Dst=EXTRACT(Opcode,0,2); Context.R[Dst]=MulWithFlags(Context.R[Src1],Context.R[Src2]); CLRFLAG(FLAG_E); } INST(NEG) { UINT32 Dst=EXTRACT(Opcode,9,11); UINT32 Src=EXTRACT(Opcode,3,5); Context.R[Dst]=NegWithFlags(Context.R[Src]); } INST(CALL) { UINT32 Offset=EXTRACT(Opcode,0,7); if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; PushVal(Context.PC+2); Context.PC=Context.PC+Offset; change_pc(Context.PC+2); CLRFLAG(FLAG_E); } INST(JV) { UINT32 Offset=EXTRACT(Opcode,0,7); if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; if(TESTFLAG(FLAG_V)) { Context.PC=Context.PC+Offset; change_pc(Context.PC+2); } CLRFLAG(FLAG_E); } INST(JNV) { UINT32 Offset=EXTRACT(Opcode,0,7); if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; if(!TESTFLAG(FLAG_V)) { Context.PC=Context.PC+Offset; change_pc(Context.PC+2); } CLRFLAG(FLAG_E); } INST(JC) { UINT32 Offset=EXTRACT(Opcode,0,7); if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; if(TESTFLAG(FLAG_C)) { Context.PC=Context.PC+Offset; change_pc(Context.PC+2); } CLRFLAG(FLAG_E); } INST(JNC) { UINT32 Offset=EXTRACT(Opcode,0,7); if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; if(!TESTFLAG(FLAG_C)) { Context.PC=Context.PC+Offset; change_pc(Context.PC+2); } CLRFLAG(FLAG_E); } INST(JP) { UINT32 Offset=EXTRACT(Opcode,0,7); if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; if(!TESTFLAG(FLAG_S)) { Context.PC=Context.PC+Offset; change_pc(Context.PC+2); } CLRFLAG(FLAG_E); } INST(JM) { UINT32 Offset=EXTRACT(Opcode,0,7); if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; if(TESTFLAG(FLAG_S)) { Context.PC=Context.PC+Offset; change_pc(Context.PC+2); } CLRFLAG(FLAG_E); } INST(JNZ) { UINT32 Offset=EXTRACT(Opcode,0,7); if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; if(!TESTFLAG(FLAG_Z)) { Context.PC=Context.PC+Offset; change_pc(Context.PC+2); } CLRFLAG(FLAG_E); } INST(JZ) { UINT32 Offset=EXTRACT(Opcode,0,7); if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; if(TESTFLAG(FLAG_Z)) { Context.PC=Context.PC+Offset; change_pc(Context.PC+2); } CLRFLAG(FLAG_E); } INST(JGE) { UINT32 Offset=EXTRACT(Opcode,0,7); UINT32 S=TESTFLAG(FLAG_S)?1:0; UINT32 V=TESTFLAG(FLAG_V)?1:0; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; if(!(S^V)) { Context.PC=Context.PC+Offset; change_pc(Context.PC+2); } CLRFLAG(FLAG_E); } INST(JLE) { UINT32 Offset=EXTRACT(Opcode,0,7); UINT32 S=TESTFLAG(FLAG_S)?1:0; UINT32 V=TESTFLAG(FLAG_V)?1:0; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; if(TESTFLAG(FLAG_Z) || (S^V)) { Context.PC=Context.PC+Offset; change_pc(Context.PC+2); } CLRFLAG(FLAG_E); } INST(JHI) { UINT32 Offset=EXTRACT(Opcode,0,7); if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; if(!(TESTFLAG(FLAG_Z) || TESTFLAG(FLAG_C))) { Context.PC=Context.PC+Offset; change_pc(Context.PC+2); } CLRFLAG(FLAG_E); } INST(JLS) { UINT32 Offset=EXTRACT(Opcode,0,7); if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; if(TESTFLAG(FLAG_Z) || TESTFLAG(FLAG_C)) { Context.PC=Context.PC+Offset; change_pc(Context.PC+2); } CLRFLAG(FLAG_E); } INST(JGT) { UINT32 Offset=EXTRACT(Opcode,0,7); UINT32 S=TESTFLAG(FLAG_S)?1:0; UINT32 V=TESTFLAG(FLAG_V)?1:0; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; if(!(TESTFLAG(FLAG_Z) || (S^V))) { Context.PC=Context.PC+Offset; change_pc(Context.PC+2); } CLRFLAG(FLAG_E); } INST(JLT) { UINT32 Offset=EXTRACT(Opcode,0,7); UINT32 S=TESTFLAG(FLAG_S)?1:0; UINT32 V=TESTFLAG(FLAG_V)?1:0; if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; if(S^V) { Context.PC=Context.PC+Offset; change_pc(Context.PC+2); } CLRFLAG(FLAG_E); } INST(JMP) { UINT32 Offset=EXTRACT(Opcode,0,7); if(TESTFLAG(FLAG_E)) Offset=(EXTRACT(Context.ER,0,22)<<8)|Offset; else Offset=SEX(8,Offset); Offset<<=1; Context.PC=Context.PC+Offset; change_pc(Context.PC+2); CLRFLAG(FLAG_E); } INST(JR) { UINT32 Src=EXTRACT(Opcode,0,3); Context.PC=Context.R[Src]-2; change_pc(Context.PC+2); CLRFLAG(FLAG_E); } INST(CALLR) { UINT32 Src=EXTRACT(Opcode,0,3); PushVal(Context.PC+2); Context.PC=Context.R[Src]-2; change_pc(Context.PC+2); CLRFLAG(FLAG_E); } INST(ASR) { UINT32 CS=Opcode&(1<<10); UINT32 Dst=EXTRACT(Opcode,0,2); UINT32 Imm=EXTRACT(Opcode,5,9); UINT32 Cnt=EXTRACT(Opcode,5,7); if(CS) Context.R[Dst]=AsrWithFlags(Context.R[Dst],Context.R[Cnt]&0x1f); else Context.R[Dst]=AsrWithFlags(Context.R[Dst],Imm&0x1f); CLRFLAG(FLAG_E); } INST(LSR) { UINT32 CS=Opcode&(1<<10); UINT32 Dst=EXTRACT(Opcode,0,2); UINT32 Imm=EXTRACT(Opcode,5,9); UINT32 Cnt=EXTRACT(Opcode,5,7); if(CS) Context.R[Dst]=LsrWithFlags(Context.R[Dst],Context.R[Cnt]&0x1f); else Context.R[Dst]=LsrWithFlags(Context.R[Dst],Imm&0x1f); CLRFLAG(FLAG_E); } INST(ASL) { UINT32 CS=Opcode&(1<<10); UINT32 Dst=EXTRACT(Opcode,0,2); UINT32 Imm=EXTRACT(Opcode,5,9); UINT32 Cnt=EXTRACT(Opcode,5,7); if(CS) Context.R[Dst]=AslWithFlags(Context.R[Dst],Context.R[Cnt]&0x1f); else Context.R[Dst]=AslWithFlags(Context.R[Dst],Imm&0x1f); CLRFLAG(FLAG_E); } INST(EXTB) { UINT32 Dst=EXTRACT(Opcode,0,3); UINT32 Val=Context.R[Dst]; Context.R[Dst]=SEX8(Val); CLRFLAG(FLAG_S|FLAG_Z|FLAG_E); if(!Context.R[Dst]) SETFLAG(FLAG_Z); if(Context.R[Dst]&0x80000000) SETFLAG(FLAG_S); } INST(EXTS) { UINT32 Dst=EXTRACT(Opcode,0,3); UINT32 Val=Context.R[Dst]; Context.R[Dst]=SEX16(Val); CLRFLAG(FLAG_S|FLAG_Z|FLAG_E); if(!Context.R[Dst]) SETFLAG(FLAG_Z); if(Context.R[Dst]&0x80000000) SETFLAG(FLAG_S); } INST(SET) { UINT32 Imm=EXTRACT(Opcode,0,3); Context.SR|=(1<0); return cycles-SE3208_ICount; } static void SE3208_Init(int index, int clock, const void *config, int (*irqcallback)(int)) { BuildTable(); Context.irq_callback = irqcallback; } static void SE3208_Exit(void) { if(OpTable) free(OpTable); } static void SE3208_get_context(void *dst) { if(dst) memcpy(dst,&Context,sizeof(Context)); } static void SE3208_set_context(void *src) { if(src) memcpy(&Context,src,sizeof(Context)); } static void set_irq_line(int line,int state) { if(line==INPUT_LINE_NMI) //NMI Context.NMI=state; else Context.IRQ=state; } static void SE3208_set_info(UINT32 state, cpuinfo *info) { switch (state) { /* --- the following bits of info are set as 64-bit signed integers --- */ case CPUINFO_INT_INPUT_STATE + SE3208_INT: set_irq_line(0, info->i); break; case CPUINFO_INT_INPUT_STATE + INPUT_LINE_NMI: set_irq_line(INPUT_LINE_NMI, info->i); break; case CPUINFO_INT_REGISTER + SE3208_PC: case CPUINFO_INT_PC: Context.PC = info->i; break; case CPUINFO_INT_REGISTER + SE3208_SP: case CPUINFO_INT_SP: Context.SP = info->i; break; case CPUINFO_INT_REGISTER + SE3208_ER: Context.ER = info->i; break; case CPUINFO_INT_REGISTER + SE3208_SR: Context.SR = info->i; break; case CPUINFO_INT_REGISTER + SE3208_R0: Context.R[ 0] = info->i; break; case CPUINFO_INT_REGISTER + SE3208_R1: Context.R[ 1] = info->i; break; case CPUINFO_INT_REGISTER + SE3208_R2: Context.R[ 2] = info->i; break; case CPUINFO_INT_REGISTER + SE3208_R3: Context.R[ 3] = info->i; break; case CPUINFO_INT_REGISTER + SE3208_R4: Context.R[ 4] = info->i; break; case CPUINFO_INT_REGISTER + SE3208_R5: Context.R[ 5] = info->i; break; case CPUINFO_INT_REGISTER + SE3208_R6: Context.R[ 6] = info->i; break; case CPUINFO_INT_REGISTER + SE3208_R7: Context.R[ 7] = info->i; break; } } void SE3208_get_info(UINT32 state, cpuinfo *info) { switch (state) { /* --- the following bits of info are returned as 64-bit signed integers --- */ case CPUINFO_INT_CONTEXT_SIZE: info->i = sizeof(Context); break; case CPUINFO_INT_INPUT_LINES: info->i = 1; break; case CPUINFO_INT_DEFAULT_IRQ_VECTOR: info->i = 0; break; case CPUINFO_INT_ENDIANNESS: info->i = CPU_IS_LE; break; case CPUINFO_INT_CLOCK_MULTIPLIER: info->i = 1; break; case CPUINFO_INT_CLOCK_DIVIDER: info->i = 1; break; case CPUINFO_INT_MIN_INSTRUCTION_BYTES: info->i = 2; break; case CPUINFO_INT_MAX_INSTRUCTION_BYTES: info->i = 2; break; case CPUINFO_INT_MIN_CYCLES: info->i = 1; break; case CPUINFO_INT_MAX_CYCLES: info->i = 1; break; case CPUINFO_INT_DATABUS_WIDTH + ADDRESS_SPACE_PROGRAM: info->i = 32; break; case CPUINFO_INT_ADDRBUS_WIDTH + ADDRESS_SPACE_PROGRAM: info->i = 32; break; case CPUINFO_INT_ADDRBUS_SHIFT + ADDRESS_SPACE_PROGRAM: info->i = 0; break; case CPUINFO_INT_DATABUS_WIDTH + ADDRESS_SPACE_DATA: info->i = 0; break; case CPUINFO_INT_ADDRBUS_WIDTH + ADDRESS_SPACE_DATA: info->i = 0; break; case CPUINFO_INT_ADDRBUS_SHIFT + ADDRESS_SPACE_DATA: info->i = 0; break; case CPUINFO_INT_DATABUS_WIDTH + ADDRESS_SPACE_IO: info->i = 0; break; case CPUINFO_INT_ADDRBUS_WIDTH + ADDRESS_SPACE_IO: info->i = 0; break; case CPUINFO_INT_ADDRBUS_SHIFT + ADDRESS_SPACE_IO: info->i = 0; break; case CPUINFO_INT_INPUT_STATE + SE3208_INT: info->i = Context.IRQ; break; case CPUINFO_INT_INPUT_STATE + INPUT_LINE_NMI: info->i = Context.NMI; break; case CPUINFO_INT_PREVIOUSPC: info->i = Context.PPC; break; case CPUINFO_INT_PC: case CPUINFO_INT_REGISTER + SE3208_PC: info->i = Context.PC; break; case CPUINFO_INT_REGISTER + SE3208_SP: case CPUINFO_INT_SP: info->i = Context.SP; break; case CPUINFO_INT_REGISTER + SE3208_SR: info->i = Context.SR; break; case CPUINFO_INT_REGISTER + SE3208_ER: info->i = Context.ER; break; case CPUINFO_INT_REGISTER + SE3208_R0: info->i = Context.R[ 0]; break; case CPUINFO_INT_REGISTER + SE3208_R1: info->i = Context.R[ 1]; break; case CPUINFO_INT_REGISTER + SE3208_R2: info->i = Context.R[ 2]; break; case CPUINFO_INT_REGISTER + SE3208_R3: info->i = Context.R[ 3]; break; case CPUINFO_INT_REGISTER + SE3208_R4: info->i = Context.R[ 4]; break; case CPUINFO_INT_REGISTER + SE3208_R5: info->i = Context.R[ 5]; break; case CPUINFO_INT_REGISTER + SE3208_R6: info->i = Context.R[ 6]; break; case CPUINFO_INT_REGISTER + SE3208_R7: info->i = Context.R[ 7]; break; /* --- the following bits of info are returned as pointers to data or functions --- */ case CPUINFO_PTR_SET_INFO: info->setinfo = SE3208_set_info; break; case CPUINFO_PTR_GET_CONTEXT: info->getcontext = SE3208_get_context; break; case CPUINFO_PTR_SET_CONTEXT: info->setcontext = SE3208_set_context; break; case CPUINFO_PTR_INIT: info->init = SE3208_Init; break; case CPUINFO_PTR_RESET: info->reset = SE3208_Reset; break; case CPUINFO_PTR_EXIT: info->exit = SE3208_Exit; break; case CPUINFO_PTR_EXECUTE: info->execute = SE3208_Run; break; case CPUINFO_PTR_BURN: info->burn = NULL; break; #ifdef ENABLE_DEBUGGER case CPUINFO_PTR_DISASSEMBLE: info->disassemble = SE3208_Dasm; break; #endif /* ENABLE_DEBUGGER */ case CPUINFO_PTR_INSTRUCTION_COUNTER: info->icount = &SE3208_ICount; break; /* --- the following bits of info are returned as NULL-terminated strings --- */ case CPUINFO_STR_NAME: strcpy(info->s, "SE3208"); break; case CPUINFO_STR_CORE_FAMILY: strcpy(info->s, "Advanced Digital Chips Inc."); break; case CPUINFO_STR_CORE_VERSION: strcpy(info->s, "1.00"); break; case CPUINFO_STR_CORE_FILE: strcpy(info->s, __FILE__); break; case CPUINFO_STR_CORE_CREDITS: strcpy(info->s, "Copyright Miguel Angel Horna, all rights reserved."); break; case CPUINFO_STR_FLAGS: sprintf(info->s, "%c%c%c%c %c%c%c%c%c", Context.SR&FLAG_C?'C':'.', Context.SR&FLAG_V?'V':'.', Context.SR&FLAG_S?'S':'.', Context.SR&FLAG_Z?'Z':'.', Context.SR&FLAG_M?'M':'.', Context.SR&FLAG_E?'E':'.', Context.SR&FLAG_AUT?'A':'.', Context.SR&FLAG_ENI?'I':'.', Context.SR&FLAG_NMI?'N':'.' ); break; case CPUINFO_STR_REGISTER + SE3208_PC: sprintf(info->s, "PC :%08X", Context.PC); break; case CPUINFO_STR_REGISTER + SE3208_SR: sprintf(info->s, "SR :%08X", Context.SR); break; case CPUINFO_STR_REGISTER + SE3208_ER: sprintf(info->s, "ER :%08X", Context.ER); break; case CPUINFO_STR_REGISTER + SE3208_SP: sprintf(info->s, "SP :%08X", Context.SP); break; case CPUINFO_STR_REGISTER + SE3208_R0: sprintf(info->s, "R0 :%08X", Context.R[ 0]); break; case CPUINFO_STR_REGISTER + SE3208_R1: sprintf(info->s, "R1 :%08X", Context.R[ 1]); break; case CPUINFO_STR_REGISTER + SE3208_R2: sprintf(info->s, "R2 :%08X", Context.R[ 2]); break; case CPUINFO_STR_REGISTER + SE3208_R3: sprintf(info->s, "R3 :%08X", Context.R[ 3]); break; case CPUINFO_STR_REGISTER + SE3208_R4: sprintf(info->s, "R4 :%08X", Context.R[ 4]); break; case CPUINFO_STR_REGISTER + SE3208_R5: sprintf(info->s, "R5 :%08X", Context.R[ 5]); break; case CPUINFO_STR_REGISTER + SE3208_R6: sprintf(info->s, "R6 :%08X", Context.R[ 6]); break; case CPUINFO_STR_REGISTER + SE3208_R7: sprintf(info->s, "R7 :%08X", Context.R[ 7]); break; case CPUINFO_STR_REGISTER + SE3208_PPC: sprintf(info->s, "PPC :%08X", Context.PPC); break; } }