1 /* 2 3 Copyright 2021, dettus@dettus.net 4 5 Redistribution and use in source and binary forms, with or without modification, 6 are permitted provided that the following conditions are met: 7 8 1. Redistributions of source code must retain the above copyright notice, this 9 list of conditions and the following disclaimer. 10 11 2. Redistributions in binary form must reproduce the above copyright notice, 12 this list of conditions and the following disclaimer in the documentation 13 and/or other materials provided with the distribution. 14 15 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 16 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE 19 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 21 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 22 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 23 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 26 27 */ 28 29 #ifndef VM68K_MACROS_H 30 #define VM68K_MACROS_H 31 #include "vm68k_datatypes.h" 32 // the gfx2 format introduced MIXED ENDIAN. 33 #define READ_INT32ME(ptr,idx) (\ 34 (((tVM68k_ulong)((ptr)[((idx)+1)])&0xff)<<24) |\ 35 (((tVM68k_ulong)((ptr)[((idx)+0)])&0xff)<<16) |\ 36 (((tVM68k_ulong)((ptr)[((idx)+3)])&0xff)<< 8) |\ 37 (((tVM68k_ulong)((ptr)[((idx)+2)])&0xff)<< 0) |\ 38 0) 39 40 41 #define READ_INT32BE(ptr,idx) (\ 42 (((tVM68k_ulong)((ptr)[((idx)+0)])&0xff)<<24) |\ 43 (((tVM68k_ulong)((ptr)[((idx)+1)])&0xff)<<16) |\ 44 (((tVM68k_ulong)((ptr)[((idx)+2)])&0xff)<< 8) |\ 45 (((tVM68k_ulong)((ptr)[((idx)+3)])&0xff)<< 0) |\ 46 0) 47 #define READ_INT16BE(ptr,idx) (\ 48 (((tVM68k_ulong)((ptr)[((idx)+0)])&0xff)<< 8) |\ 49 (((tVM68k_ulong)((ptr)[((idx)+1)])&0xff)<< 0) |\ 50 0) 51 #define READ_INT8BE(ptr,idx) (\ 52 (((tVM68k_ulong)((ptr)[((idx)+0)])&0xff)<< 0) |\ 53 0) 54 55 #define READ_INT32LE(ptr,idx) (\ 56 (((unsigned int)((ptr)[((idx)+3)])&0xff)<<24) |\ 57 (((unsigned int)((ptr)[((idx)+2)])&0xff)<<16) |\ 58 (((unsigned int)((ptr)[((idx)+1)])&0xff)<< 8) |\ 59 (((unsigned int)((ptr)[((idx)+0)])&0xff)<< 0) |\ 60 0) 61 #define READ_INT16LE(ptr,idx) (\ 62 (((unsigned int)((ptr)[((idx)+1)])&0xff)<< 8) |\ 63 (((unsigned int)((ptr)[((idx)+0)])&0xff)<< 0) |\ 64 0) 65 #define READ_INT8LE(ptr,idx) (\ 66 (((unsigned int)((ptr)[((idx)+0)])&0xff)<< 0) |\ 67 0) 68 69 70 #define WRITE_INT32BE(ptr,idx,val) {\ 71 (ptr)[(idx)+3]=((tVM68k_ubyte)((val)>> 0)&0xff); \ 72 (ptr)[(idx)+2]=((tVM68k_ubyte)((val)>> 8)&0xff); \ 73 (ptr)[(idx)+1]=((tVM68k_ubyte)((val)>>16)&0xff); \ 74 (ptr)[(idx)+0]=((tVM68k_ubyte)((val)>>24)&0xff); \ 75 } 76 #define WRITE_INT16BE(ptr,idx,val) {\ 77 (ptr)[(idx)+1]=((tVM68k_ubyte)((val)>> 0)&0xff); \ 78 (ptr)[(idx)+0]=((tVM68k_ubyte)((val)>> 8)&0xff); \ 79 } 80 #define WRITE_INT8BE(ptr,idx,val) {\ 81 (ptr)[(idx)+0]=((tVM68k_ubyte)((val)>> 0)&0xff); \ 82 } 83 84 #define WRITE_INT32LE(ptr,idx,val) {\ 85 (ptr)[(idx)+0]=((unsigned char)((val)>> 0)&0xff); \ 86 (ptr)[(idx)+1]=((unsigned char)((val)>> 8)&0xff); \ 87 (ptr)[(idx)+2]=((unsigned char)((val)>>16)&0xff); \ 88 (ptr)[(idx)+3]=((unsigned char)((val)>>24)&0xff); \ 89 } 90 #define WRITE_INT16LE(ptr,idx,val) {\ 91 (ptr)[(idx)+0]=((unsigned char)((val)>> 0)&0xff); \ 92 (ptr)[(idx)+1]=((unsigned char)((val)>> 8)&0xff); \ 93 } 94 #define WRITE_INT8LE(ptr,idx,val) {\ 95 (ptr)[(idx)+0]=((unsigned char)((val)>> 0)&0xff); \ 96 } 97 98 99 #define INITNEXT(pVM68k,next) \ 100 (next).pcr=(pVM68k)->pcr; \ 101 (next).a[0]=(pVM68k)->a[0]; \ 102 (next).a[1]=(pVM68k)->a[1]; \ 103 (next).a[2]=(pVM68k)->a[2]; \ 104 (next).a[3]=(pVM68k)->a[3]; \ 105 (next).a[4]=(pVM68k)->a[4]; \ 106 (next).a[5]=(pVM68k)->a[5]; \ 107 (next).a[6]=(pVM68k)->a[6]; \ 108 (next).a[7]=(pVM68k)->a[7]; \ 109 (next).d[0]=(pVM68k)->d[0]; \ 110 (next).d[1]=(pVM68k)->d[1]; \ 111 (next).d[2]=(pVM68k)->d[2]; \ 112 (next).d[3]=(pVM68k)->d[3]; \ 113 (next).d[4]=(pVM68k)->d[4]; \ 114 (next).d[5]=(pVM68k)->d[5]; \ 115 (next).d[6]=(pVM68k)->d[6]; \ 116 (next).d[7]=(pVM68k)->d[7]; \ 117 (next).override_sr=0; \ 118 (next).sr=((pVM68k)->sr); \ 119 (next).cflag=((pVM68k)->sr>>0)&1; \ 120 (next).vflag=((pVM68k)->sr>>1)&1; \ 121 (next).zflag=((pVM68k)->sr>>2)&1; \ 122 (next).nflag=((pVM68k)->sr>>3)&1; \ 123 (next).xflag=((pVM68k)->sr>>4)&1; \ 124 (next).mem_we=0; \ 125 (next).mem_addr[0]=0; \ 126 (next).mem_size=0; \ 127 (next).mem_value[0]=0; 128 129 130 #define WRITEFLAGS(pVM68k,transaction) \ 131 (pVM68k)->sr|=(tVM68k_uword)((transaction).cflag)<<0; \ 132 (pVM68k)->sr|=(tVM68k_uword)((transaction).vflag)<<1; \ 133 (pVM68k)->sr|=(tVM68k_uword)((transaction).zflag)<<2; \ 134 (pVM68k)->sr|=(tVM68k_uword)((transaction).nflag)<<3; \ 135 (pVM68k)->sr|=(tVM68k_uword)((transaction).xflag)<<4; 136 137 #define READEXTENSIONBYTE(pVM68k,pNext) READ_INT8BE((pVM68k)->pMem,(pNext)->pcr+1);(pNext)->pcr+=2; 138 #define READEXTENSIONWORD(pVM68k,pNext) READ_INT16BE((pVM68k)->pMem,(pNext)->pcr);(pNext)->pcr+=2; 139 #define READEXTENSIONLONG(pVM68k,pNext) READ_INT32BE((pVM68k)->pMem,(pNext)->pcr);(pNext)->pcr+=4; 140 141 #define READEXTENSION(pVM68k,pNext,datatype,operand) \ 142 switch (datatype) \ 143 { \ 144 case VM68K_BYTE: operand=READEXTENSIONBYTE(pVM68k,pNext);break; \ 145 case VM68K_WORD: operand=READEXTENSIONWORD(pVM68k,pNext);break; \ 146 case VM68K_LONG: operand=READEXTENSIONLONG(pVM68k,pNext);break; \ 147 default: operand=0;break; \ 148 } 149 150 #define READSIGNEDEXTENSION(pVM68k,pNext,datatype,operand) \ 151 switch (datatype) \ 152 { \ 153 case VM68K_BYTE: operand=READEXTENSIONBYTE(pVM68k,pNext);operand=(tVM68k_slong)((tVM68k_sbyte)((operand)& 0xff));break; \ 154 case VM68K_WORD: operand=READEXTENSIONBYTE(pVM68k,pNext);operand=(tVM68k_slong)((tVM68k_sword)((operand)&0xffff));break; \ 155 case VM68K_LONG: operand=READEXTENSIONLONG(pVM68k,pNext);break; \ 156 } 157 158 #define PUSHWORDTOSTACK(pVM68k,pNext,x) {(pNext)->a[7]-=2;(pNext)->mem_addr[(pNext)->mem_we]=(pNext)->a[7];(pNext)->mem_size=VM68K_WORD;(pNext)->mem_value[(pNext)->mem_we]=x;(pNext)->mem_we++;} 159 #define PUSHLONGTOSTACK(pVM68k,pNext,x) {(pNext)->a[7]-=4;(pNext)->mem_addr[(pNext)->mem_we]=(pNext)->a[7];(pNext)->mem_size=VM68K_LONG;(pNext)->mem_value[(pNext)->mem_we]=x;(pNext)->mem_we++;} 160 161 #define POPWORDFROMSTACK(pVM68k,pNext,x) {tVM68k_uword y;y=READ_INT16BE((pVM68k)->pMem,(pNext)->a[7]);(pNext)->a[7]+=2;x=((x)&0xffff0000)|(y&0xffff);} 162 #define POPLONGFROMSTACK(pVM68k,pNext,x) {x=READ_INT32BE((pVM68k)->pMem,(pNext)->a[7]);(pNext)->a[7]+=4;} 163 164 165 #endif 166