/* ** cpu.h Motorola M68k, CPU32 and ColdFire cpu-description header-file ** (c) in 2002,2006-2017 by Frank Wille */ #define BIGENDIAN 1 #define LITTLEENDIAN 0 #define VASM_CPU_M68K 1 #define MNEMOHTABSIZE 0x4000 /* maximum number of operands for one mnemonic */ #define MAX_OPERANDS 6 /* maximum number of mnemonic-qualifiers per mnemonic */ #define MAX_QUALIFIERS 1 /* maximum number of additional command-line-flags for this cpu */ /* data type to represent a target-address */ typedef int32_t taddr; typedef uint32_t utaddr; /* instruction extension */ #define HAVE_INSTRUCTION_EXTENSION 1 typedef struct { union { struct { unsigned char flags; signed char last_size; signed char orig_ext; char unused; } real; struct { struct instruction *next; } copy; } un; } instruction_ext; #define IFL_RETAINLASTSIZE 1 /* retain current last_size value */ #define IFL_UNSIZED 2 /* instruction had no size extension */ /* we use OPTS atoms for cpu-specific options */ #define HAVE_CPU_OPTS 1 typedef struct { int cmd; int arg; } optcmd; /* optcmd commands - warning: print_cpu_opts() depends on the order! */ enum { OCMD_NOP, OCMD_CPU, OCMD_FPU, OCMD_SDREG, OCMD_NOOPT, OCMD_OPTGEN, OCMD_OPTMOVEM, OCMD_OPTPEA, OCMD_OPTCLR, OCMD_OPTST, OCMD_OPTLSL, OCMD_OPTMUL, OCMD_OPTDIV, OCMD_OPTFCONST, OCMD_OPTBRAJMP, OCMD_OPTJBRA, OCMD_OPTPC, OCMD_OPTBRA, OCMD_OPTDISP, OCMD_OPTABS, OCMD_OPTMOVEQ, OCMD_OPTQUICK, OCMD_OPTBRANOP, OCMD_OPTBDISP, OCMD_OPTODISP, OCMD_OPTLEA, OCMD_OPTLQUICK, OCMD_OPTIMMADDR, OCMD_OPTSPEED, OCMD_SMALLCODE, OCMD_SMALLDATA, OCMD_OPTWARN, OCMD_CHKPIC, OCMD_CHKTYPE, OCMD_NOWARN }; /* minimum instruction alignment */ #define INST_ALIGN 2 /* default alignment for n-bit data */ #define DATA_ALIGN(n) ((n<=8)?1:2) /* operand class for n-bit data definitions */ #define DATA_OPERAND(n) m68k_data_operand(n) /* returns true when instruction is valid for selected cpu */ #define MNEMONIC_VALID(n) m68k_available(n) /* parse cpu-specific directives with label */ #define PARSE_CPU_LABEL(l,s) parse_cpu_label(l,s) /* type to store each operand */ typedef struct { signed char mode; signed char reg; uint16_t format; /* used for (d8,An/PC,Rn) and ext.addr.modes */ unsigned char bf_offset; /* bitfield offset, k-factor or MAC Upper Word */ unsigned char bf_width; /* bitfield width or MAC-MASK '&' */ int8_t basetype[2]; /* BASE_OK=normal, BASE=PCREL=pc-relative base */ uint32_t flags; expr *value[2]; /* immediate, abs. or displacem. expression */ /* filled during instruction_size(): */ taddr extval[2]; /* evaluated expression from value[0/1] */ symbol *base[2]; /* symbol base for value[0/1], NULL otherwise */ } operand; /* flags */ /* Note: FL_CheckMask bits are used together with optype.flags OTF-bits */ #define FL_ExtVal0 1 /* extval[0] is set */ #define FL_ExtVal1 2 /* extval[1] is set */ #define FL_UsesFormat 4 /* operand uses format word */ #define FL_020up 8 /* 020+ addressing mode */ #define FL_noCPU32 0x10 /* addressing mode not available for CPU32 */ #define FL_BFoffsetDyn 0x20 /* dynamic bitfield offset specified */ #define FL_BFwidthDyn 0x40 /* dynamic bitfield width specified */ #define FL_DoNotEval 0x80 /* do not evaluate, extval and base are ok */ /*#define FL_PossRegList 0x80 parser is not sure if operand is RegList */ #define FL_NoOptBase 0x100 /* never optimize base displacement */ #define FL_NoOptOuter 0x200 /* never optimize outer displacement */ #define FL_NoOpt 0x300 /* never optimize this whole operand */ #define FL_ZBase 0x400 /* ZAn base register specified */ #define FL_ZIndex 0x800 /* ZRn index register specified */ #define FL_BaseReg 0x1000 /* BASEREG expression in exp.value[0] */ #define FL_BnReg 0x4000 /* Apollo: Bn register instead of An */ #define FL_MAC 0x8000 /* ColdFire MAC specific extensions */ #define FL_Bitfield 0x10000 /* operand uses bf_offset/bf_width */ #define FL_DoubleReg 0x20000 /* Dm:Dn or (Rm):(Rn), where both registers are put into "reg": 0nnn0mmm */ #define FL_KFactor 0x40000 /* k-factor {#n} or {Dn}, which can be found in bf_offset */ #define FL_FPSpec 0x80000 /* special FPU reg. FPIAR/FPCR/FPSR only */ #define FL_CheckMask 0xfc000 /* bits to check, when comparing with flags from struct optype */ /* addressing modes */ #define MODE_Dn 0 #define MODE_An 1 #define MODE_AnIndir 2 #define MODE_AnPostInc 3 #define MODE_AnPreDec 4 #define MODE_An16Disp 5 #define MODE_An8Format 6 /* uses format word */ #define MODE_Extended 7 /* reg determines addressing mode */ #define MODE_FPn 8 /* FPU register */ #define MODE_SpecReg 9 /* reg determines index into SpecRegs */ /* reg encodings for MODE_Extended: */ #define REG_AbsShort 0 #define REG_AbsLong 1 #define REG_PC16Disp 2 #define REG_PC8Format 3 /* uses format word */ #define REG_Immediate 4 #define REG_RnList 5 /* An/Dn register list in value[0] */ #define REG_FPnList 6 /* FPn register list in value[0] */ /* format word */ #define FW_IndexAn 0x8000 #define FW_IndexReg_Shift 12 #define FW_IndexReg(n) ((n)<>FW_BDSize_Shift)&3) #define FW_Postindexed 0x0004 #define FW_IndSize(n) (n) #define FW_getIndSize(n) (n&3) #define FW_None 0 #define FW_Null 1 #define FW_Word 2 #define FW_Long 3 #define FW_SizeMask 3 /* register macros */ #define REGAn 8 #define REGPC 0x10 #define REGBn 0x20 /* Apollo only */ #define REGZero 0x80 #define REGisAn(n) ((n)®An) #define REGisDn(n) (!((n)®An)) #define REGisPC(n) ((n)®PC) #define REGisZero(n) ((n)®Zero) #define REGisBn(n) ((n)®Bn) /* Apollo only */ #define REGget(n) ((n)&(REGAn-1)) #define REGgetA(n) ((n)&(REGPC-1)) #define REGext_Shift 8 #define REGext(n) (((n)&0x700)>>REGext_Shift) #define REGscale_Shift 12 #define REGscale(n) (((n)&0x3000)>>REGscale_Shift) /* MAC scale-factor, stored as value[0] */ #define MACSF_None 0 #define MACSF_ShiftLeft 1 #define MACSF_ShiftRight 3 /* special CPU registers */ struct specreg { char *name; int code; /* -1 means no code, syntax-check only */ uint32_t available; }; /* extension codes */ #define EXT_BYTE 1 #define EXT_WORD 2 #define EXT_LONG 3 #define EXT_SINGLE 4 #define EXT_DOUBLE 5 #define EXT_EXTENDED 6 #define EXT_PACKED 7 #define EXT_UPPER 2 /* ColdFire MAC upper register word */ #define EXT_LOWER 3 /* ColdFire MAC lower register word */ #define EXT_MASK 7 struct addrmode { signed char mode; signed char reg; }; #define AM_Dn 0 #define AM_An 1 #define AM_AnIndir 2 #define AM_AnPostInc 3 #define AM_AnPreDec 4 #define AM_An16Disp 5 #define AM_An8Format 6 #define AM_AbsShort 7 #define AM_AbsLong 8 #define AM_PC16Disp 9 #define AM_PC8Format 10 #define AM_Immediate 11 #define AM_RnList 12 #define AM_FPnList 13 #define AM_FPn 14 #define AM_SpecReg 15 /* operand types */ struct optype { uint16_t modes; /* addressing modes allowed (0-15, see above) */ uint32_t flags; unsigned char first; unsigned char last; }; /* flags */ /* Note: Do not allocate bits from FL_CheckMask! */ #define OTF_NOSIZE 1 /* this addr. mode requires no additional bytes */ #define OTF_BRANCH 2 /* branch instruction */ #define OTF_DATA 4 /* data definition */ #define OTF_FLTIMM 8 /* base10 immediate values are floating point */ #define OTF_QUADIMM 0x10 /* immediate values are 64 bits */ #define OTF_SPECREG 0x20 /* check for special registers during parse */ #define OTF_SRRANGE 0x40 /* check range between first/last only */ #define OTF_REGLIST 0x80 /* register list required, even when single reg. */ #define OTF_CHKVAL 0x100 /* compare op. value against first/last */ #define OTF_CHKREG 0x200 /* compare op. register against first/last */ #define OTF_VXRNG2 0x400 /* Apollo AMMX Rn:Rn+1 vector register range */ #define OTF_VXRNG4 0x800 /* Apollo AMMX Rn-Rn+3 vector register range */ /* additional mnemonic data */ typedef struct { uint16_t place[MAX_OPERANDS]; uint16_t opcode[2]; uint16_t size; uint32_t available; } mnemonic_extension; /* size qualifiers, lowest two bits specify opcode size in words! */ #define SIZE_UNSIZED 0 #define SIZE_BYTE 0x100 #define SIZE_WORD 0x200 #define SIZE_LONG 0x400 #define SIZE_SINGLE 0x800 #define SIZE_DOUBLE 0x1000 #define SIZE_EXTENDED 0x2000 #define SIZE_PACKED 0x4000 #define SIZE_MASK 0x7f00 #define SIZE_UNAMBIG 0x8000 /* only a single size allowed for this mnemonic */ #define S_CFCHECK 0x80 /* SIZE_LONG only, when mcf (Coldfire) set */ #define S_NONE 4 #define S_STD S_NONE+4 /* 1st word, bits 6-7 */ #define S_STD1 S_STD+4 /* 1st word, bits 6-7, b=1,w=2,l=3 */ #define S_HI S_STD1+4 /* 1st word, bits 9-10 */ #define S_CAS S_HI+4 /* 1st word, bits 9-10, b=1,w=2,l=3 */ #define S_MOVE S_CAS+4 /* move instruction, 1st word bits 12-13 */ #define S_WL8 S_MOVE+4 /* w/l flag in 1st word bit 8 */ #define S_LW7 S_WL8+4 /* l/w flag in 1st word bit 7 */ #define S_WL6 S_LW7+4 /* w/l flag in 1st word bit 6 */ #define S_TRAP S_WL6+4 /* 1st word, bits 1-0, w=2, l=3 */ #define S_EXT S_TRAP+4 /* 2nd word, bits 6-7 */ #define S_FP S_EXT+4 /* 2nd word, bits 12-10 (l=0,s,x,p,w,d,b) */ #define S_MAC S_FP+4 /* w/l flag in 2nd word bit 11 */ #define S_OPCODE_SIZE(n) (n&3) #define S_SIZEMODE(n) (n&0x7c) /* short cuts */ #define UNS SIZE_UNSIZED #define B SIZE_BYTE #define W SIZE_WORD #define L SIZE_LONG #define Q SIZE_DOUBLE #define SBW (SIZE_BYTE|SIZE_WORD|SIZE_SINGLE) /* .s = .b for branches */ #define SBWL (SIZE_BYTE|SIZE_WORD|SIZE_LONG|SIZE_SINGLE) #define BW (SIZE_BYTE|SIZE_WORD) #define WL (SIZE_WORD|SIZE_LONG) #define BWL (SIZE_BYTE|SIZE_WORD|SIZE_LONG) #define CFWL (SIZE_WORD|SIZE_LONG|S_CFCHECK) #define CFBWL (SIZE_BYTE|SIZE_WORD|SIZE_LONG|S_CFCHECK) #define ANY (SIZE_BYTE|SIZE_WORD|SIZE_LONG|SIZE_SINGLE|SIZE_DOUBLE| \ SIZE_EXTENDED|SIZE_PACKED) #define CFANY (SIZE_BYTE|SIZE_WORD|SIZE_LONG|SIZE_SINGLE|SIZE_DOUBLE) #define FX SIZE_EXTENDED #define FD SIZE_DOUBLE /* operand insertion info */ struct oper_insert { unsigned char mode; /* insert mode (see below) */ unsigned char size; /* number of bits to insert */ unsigned char pos; /* bit position for inserted value in stream */ unsigned char flags; void (*insert)(unsigned char *,struct oper_insert *,operand *); }; /* insert modes */ #define M_nop 0 /* do nothing for this operand */ #define M_noea 1 /* don't store ea, only extension words */ #define M_ea 2 /* insert mode/reg in lowest 6 bits */ #define M_high_ea 3 /* insert reg/mode in bits 11-6 (MOVE) */ #define M_bfea 4 /* insert std. ea and bitfield offset/width */ #define M_kfea 5 /* insert std. ea and k-factor/dest.format */ #define M_func 6 /* use insert() function */ #define M_branch 7 /* extval0 contains branch label */ #define M_val0 8 /* extval0 at specified position */ #define M_reg 9 /* insert reg at specified position */ /* flags */ #define IIF_MASK 1 /* value 2^size is represented by a 0 (M_val0) recognize MASK-flag for MAC instr. (M_ea) */ #define IIF_BCC 2 /* Bcc branch, opcode is modified */ #define IIF_REVERSE 4 /* store bits in reverse order (M_val0) */ #define IIF_NOMODE 8 /* don't store ea mode specifier in opcode */ #define IIF_SIGNED 16 /* value is signed (M_val0) */ #define IIF_3Q 64 /* MOV3Q: -1 is written as 0 (M_val0) */ #define IIF_ABSVAL 128 /* make sure first expr. is absolute (M_func) */ /* redefinition for AMMX special registers (M_func) */ #define IIF_A 8 /* RegBit 4 to A-bit (bit-position 8) */ #define IIF_B 7 /* RegBit 4 to B-bit (bit-position 7) */ #define IIF_D 6 /* RegBit 4 to D-bit (bit-position 6) */ /* CPU models and their type-flags */ struct cpu_models { char name[8]; uint32_t type; }; /* cpu types for availability check - warning: order is important */ #define CPUMASK 0x00ffffff #define m68000 0x00000001 #define m68010 0x00000002 #define m68020 0x00000004 #define m68030 0x00000008 #define m68040 0x00000010 #define m68060 0x00000020 #define m68881 0x00000040 #define m68882 m68881 #define m68851 0x00000080 #define cpu32 0x00000100 #define mcfa 0x00000200 #define mcfaplus 0x00000400 #define mcfb 0x00000800 #define mcfc 0x00001000 #define mcfhwdiv 0x00002000 #define mcfmac 0x00004000 #define mcfemac 0x00008000 #define mcfusp 0x00010000 #define mcffpu 0x00020000 #define mcfmmu 0x00040000 #define ac68080 0x00100000 #define mgas 0x20000000 /* a GNU-as specific mnemonic */ #define malias 0x40000000 /* a bad alias which we should warn about */ #define mfpu 0x80000000 /* just to check if CP-ID needs to be inserted */ /* handy aliases */ #define m68k (m68000|m68010|m68020|m68030|m68040|m68060) #define apollo (ac68080) #define mcf (mcfa|mcfaplus|mcfb|mcfc) #define mcf_all (mcfa|mcfaplus|mcfb|mcfc|mcfhwdiv|mcfmac|mcfemac|mcfusp|mcffpu|mcfmmu) #define mfloat (mfpu|m68881|m68882|m68040|m68060) #define mmmu (m68851|m68030|m68040|m68060) #define m68040up (m68040|m68060|apollo) #define m68030up (m68030|m68040up) #define m68020up (m68020|m68030up) #define m68010up (m68010|cpu32|m68020up) #define m68000up (m68000|m68010up) /* register symbols */ #define HAVE_REGSYMS #define REGSYMHTSIZE 256 #define RSTYPE_Dn 0 #define RSTYPE_An 1 #define RSTYPE_FPn 2 #define RSTYPE_Bn 3 /* Apollo only */ /* MID for a.out format */ extern int m68k_mid; #define MID m68k_mid /* exported functions */ int m68k_available(int); int m68k_data_operand(int); int parse_cpu_label(char *,char **);