2 // RMAC - Reboot's Macro Assembler for the Atari Jaguar Console System
3 // DSP56K_AMODE.H - Addressing Modes for Motorola DSP56001
4 // Copyright (C) 199x Landon Dyer, 2011-2020 Reboot and Friends
5 // RMAC derived from MADMAC v1.07 Written by Landon Dyer, 1986
6 // Source utilised with the kind permission of Landon Dyer
9 #ifndef __DSP56K_AMODE_H__
10 #define __DSP56K_AMODE_H__
15 // Addressing-mode masks
17 #define M_ACC56 0x00000001L // Accumulators A=A2:A1:A0 and B=B2:B1:B0
18 #define M_ACC48 0x00000002L // Accumulators AB=A1:B1, BA=B1:A1, A10=A1:A0, B10=B1:B0
19 #define M_ACC24 0x00000004L // Accumulators A0, A1, B0 and B1
20 #define M_ACC8 0x00000008L // Accumulators A2 and B2
21 #define M_INP48 0x00000010L // Input registers X=X1:X0 and Y=Y1:Y0
22 #define M_ALU24 0x00000020L // Data ALU input registers X1, X0, Y1, Y0
23 #define M_DSPIM 0x00000040L // #data
24 #define M_DSPIM12 0x00000080L // #data
25 //#define M_DSPIM24 0x0000010 // #data
26 #define M_DSPPCU 0x00000200L // Program control unit registers PC, MR, CCR, SR, OMR, LA, LC, SP, SS, SSH, SSL
27 #define M_DSPEA 0x00000400L // Effective addressing modes (Rn)-Nn, (Rn)+Nn, (Rn)-, (Rn)+, (Rn), (Rn+Nn), -(Rn), <absolute address>
28 #define M_DSPAA 0x00000800L // 6-bit Absolute Short Address
29 #define M_DSPPP 0x00001000L // 6-bit I/O Short Address
30 #define M_DSPM 0x00002000L // Modifier registers M0-M7
31 #define M_DSPR 0x00004000L // Address registers R0-R7
32 #define M_DSPN 0x00008000L // Address offset registers N0-N7
33 #define M_DSPABS12 0x00010000L // xxx.12bit
34 #define M_DSPABS24 0x00020000L // xxx.24bit
35 #define M_DSPABS06 0x00040000L // xxx.6bit
36 #define M_DSPABS16 0x00080000L // xxx.16bit
37 #define M_DSPIM8 0x00100000L // #data
39 #define M_ALL48 (M_ACC56|M_INP48|M_ALU24) // Input registers X=X1:X0, Y=Y1:Y0, A=A2:A1:A0, B=B2:B1:B0, X0, X1, Y0, Y1
41 #define C_DD (M_ALU24) // 4 registers in data ALU: x0, x1, y0, y1
42 #define C_DDD (M_ACC56|M_ACC24|M_ACC8) // 8 accumulators in data ALU: a0, b0, a2, b2, a1, b1, a, b
43 #define C_LLL (M_ACC56|M_ACC48|M_INP48) // 8 extended-precision registers in data ALU: a10, b10, x, y, a, b, ab, ba
44 #define C_FFF (M_DSPM) // 8 address modifier registers in address ALU: m0-m7
45 #define C_NNN (M_DSPN) // 8 address offset registers in address ALU: n0-n7
46 #define C_TTT (M_DSPR) // 8 address registers in address: r0-r7
47 #define C_GGG (M_DSPPCU) // 8 program controller registers: sr, omr, sp, ssh, la, lc
48 #define C_A18 (M_ALU24|C_DDD|C_LLL|C_FFF|C_NNN|C_TTT|C_GGG) // All of the above registers
50 #define C_DSPABS24 (M_DSPABS06|M_DSPABS12|M_DSPABS16|M_DSPABS24) // Everything up to 24-bit addresses
51 #define C_DSPABSEA (C_DSPABS24|M_DSPEA) // All absolute addresses and all other ea addressing modes
52 #define C_DSPABS16 (M_DSPABS06|M_DSPABS12|M_DSPABS16) // Everything up to 16-bit addresses
53 #define C_LUADST (M_DSPR|M_DSPN) // Mask for LUA instruction destination
54 #define C_MOVEC (M_DSPM|M_DSPPCU) // M0-M7 and SR, OMR, LA, LC, SP, SS, SSH, SSL
55 #define C_DSPIM (M_DSPIM8 | M_DSPIM | M_DSPIM12) // All the immmediate sizes we want to alias
57 // Xn Input Register X1 or X0 (24 Bits)
58 // Yn Input Register Y1 or Y0 (24 Bits)
59 // An Accumulator Registers A2, A1, A0 (A2
\97 8 Bits, A1 and A0
\97 24 Bits)
60 // Bn Accumulator Registers B2, B1, B0 (B2
\97 8 Bits, B1 and B0
\97 24 Bits)
61 // X Input Register X = X1: X0 (48 Bits)
62 // Y Input Register Y = Y1: Y0 (48 Bits)
63 // A Accumulator A = A2: A1: A0 (56 Bits)*
64 // B Accumulator B = B2: B1: B0 (56 BIts)*
65 // AB Accumulators A and B = A1: B1 (48 Bits)*
66 // BA Accumulators B and A = B1: A1 (48 Bits)*
67 // A10 Accumulator A = A1: A0 (48 Bits)
68 // B10 Accumulator B= B1:B0 (48 bits)
71 #define PARMOVE 0x00000001L
72 #define NOPARMO 0x00000000L
76 #define DSP_EA_POSTDEC B8(00000000)
77 #define DSP_EA_POSTINC B8(00001000)
78 #define DSP_EA_POSTDEC1 B8(00010000)
79 #define DSP_EA_POSTINC1 B8(00011000)
80 #define DSP_EA_NOUPD B8(00100000)
81 #define DSP_EA_INDEX B8(00101000)
82 #define DSP_EA_PREDEC1 B8(00111000)
83 #define DSP_EA_ABS B8(00110000)
84 #define DSP_EA_IMM B8(00110100)
87 // Mnemonic table structure
88 #define MNTABDSP struct _mntabdsp
90 LONG mn0, mn1; // Addressing modes
91 WORD mnattr; // Attributes (PARMOVE, ...)
92 LONG mninst; // Instruction mask
93 WORD mncont; // Continuation (or -1)
94 int (* mnfunc)(LONG); // Mnemonic builder
97 // Addressing mode variables, output of dsp_amode()
98 extern int dsp_am0; // Addressing mode
99 extern int dsp_a0reg; // Register
100 extern int dsp_am1; // Addressing mode
101 extern int dsp_a1reg; // Register
102 extern int dsp_am2; // Addressing mode
103 extern int dsp_a2reg; // Register
104 extern int dsp_am3; // Addressing mode
105 extern int dsp_a3reg; // Register
107 extern TOKEN dsp_a0expr[EXPRSIZE]; // Expression
108 extern uint64_t dsp_a0exval; // Expression's value
109 extern WORD dsp_a0exattr; // Expression's attribute
110 extern SYM * dsp_a0esym; // External symbol involved in expr
111 extern LONG dsp_a0memspace; // Addressing mode's memory space (P, X, Y)
112 extern LONG dsp_a0perspace; // Peripheral space (X, Y - used in movep)
113 extern TOKEN dsp_a1expr[EXPRSIZE]; // Expression
114 extern uint64_t dsp_a1exval; // Expression's value
115 extern WORD dsp_a1exattr; // Expression's attribute
116 extern SYM * dsp_a1esym; // External symbol involved in expr
117 extern LONG dsp_a1memspace; // Addressing mode's memory space (P, X, Y)
118 extern LONG dsp_a1perspace; // Peripheral space (X, Y - used in movep)
119 extern TOKEN dsp_a2expr[EXPRSIZE]; // Expression
120 extern uint64_t dsp_a2exval; // Expression's value
121 extern WORD dsp_a2exattr; // Expression's attribute
122 extern SYM * dsp_a2esym; // External symbol involved in expr
123 extern TOKEN dsp_a3expr[EXPRSIZE]; // Expression
124 extern uint64_t dsp_a3exval; // Expression's value
125 extern WORD dsp_a3exattr; // Expression's attribute
126 extern SYM * dsp_a3esym; // External symbol involved in expr
127 extern int dsp_k; // Multiplications sign
128 extern TOKEN dspImmedEXPR[EXPRSIZE]; // Expression
129 extern uint64_t dspImmedEXVAL; // Expression's value
130 extern WORD dspImmedEXATTR; // Expression's attribute
131 extern SYM * dspImmedESYM; // External symbol involved in expr
132 extern int deposit_extra_ea; // Optional effective address extension
135 // Extra ea deposit modes
138 DEPOSIT_EXTRA_WORD = 1,
139 DEPOSIT_EXTRA_FIXUP = 2,
144 int dsp_amode(int maxea);
145 LONG parmoves(WORD dest);
146 int dsp_tcc4(LONG inst);
148 #endif // __DSP56K_AMODE_H__