--- /dev/null
+//
+// RMAC - Reboot's Macro Assembler for the Atari Jaguar Console System
+// DSP56K_AMODE.H - Addressing Modes for Motorola DSP56001
+// Copyright (C) 199x Landon Dyer, 2011 Reboot and Friends
+// RMAC derived from MADMAC v1.07 Written by Landon Dyer, 1986
+// Source utilised with the kind permission of Landon Dyer
+//
+
+#ifndef __DSP56K_AMODE_H__
+#define __DSP56K_AMODE_H__
+
+#include "rmac.h"
+#include "amode.h"
+
+// Addressing-mode masks
+
+#define M_ACC56 0x00000001L // Accumulators A=A2:A1:A0 and B=B2:B1:B0
+#define M_ACC48 0x00000002L // Accumulators AB=A1:B1, BA=B1:A1, A10=A1:A0, B10=B1:B0
+#define M_ACC24 0x00000004L // Accumulators A0, A1, B0 and B1
+#define M_ACC8 0x00000008L // Accumulators A2 and B2
+#define M_INP48 0x00000010L // Input registers X=X1:X0 and Y=Y1:Y0
+#define M_ALU24 0x00000020L // Data ALU input registers X1, X0, Y1, Y0
+#define M_DSPIM 0x00000040L // #data
+#define M_DSPIM12 0x00000080L // #data
+//#define M_DSPIM24 0x0000010 // #data
+#define M_DSPPCU 0x00000200L // Program control unit registers PC, MR, CCR, SR, OMR, LA, LC, SP, SS, SSH, SSL
+#define M_DSPEA 0x00000400L // Effective addressing modes (Rn)-Nn, (Rn)+Nn, (Rn)-, (Rn)+, (Rn), (Rn+Nn), -(Rn), <absolute address>
+#define M_DSPAA 0x00000800L // 6-bit Absolute Short Address
+#define M_DSPPP 0x00001000L // 6-bit I/O Short Address
+#define M_DSPM 0x00002000L // Modifier registers M0-M7
+#define M_DSPR 0x00004000L // Address registers R0-R7
+#define M_DSPN 0x00008000L // Address offset registers N0-N7
+#define M_DSPABS12 0x00010000L // xxx.12bit
+#define M_DSPABS24 0x00020000L // xxx.24bit
+#define M_DSPABS06 0x00040000L // xxx.6bit
+#define M_DSPABS16 0x00080000L // xxx.16bit
+#define M_DSPIM8 0x00100000L // #data
+
+#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
+
+#define C_DD (M_ALU24) // 4 registers in data ALU: x0, x1, y0, y1
+#define C_DDD (M_ACC56|M_ACC24|M_ACC8) // 8 accumulators in data ALU: a0, b0, a2, b2, a1, b1, a, b
+#define C_LLL (M_ACC56|M_ACC48|M_INP48) // 8 extended-precision registers in data ALU: a10, b10, x, y, a, b, ab, ba
+#define C_FFF (M_DSPM) // 8 address modifier registers in address ALU: m0-m7
+#define C_NNN (M_DSPN) // 8 address offset registers in address ALU: n0-n7
+#define C_TTT (M_DSPR) // 8 address registers in address: r0-r7
+#define C_GGG (M_DSPPCU) // 8 program controller registers: sr, omr, sp, ssh, la, lc
+#define C_A18 (M_ALU24|C_DDD|C_LLL|C_FFF|C_NNN|C_TTT|C_GGG) // All of the above registers
+
+#define C_DSPABS24 (M_DSPABS06|M_DSPABS12|M_DSPABS16|M_DSPABS24) // Everything up to 24-bit addresses
+#define C_DSPABSEA (C_DSPABS24|M_DSPEA) // All absolute addresses and all other ea addressing modes
+#define C_DSPABS16 (M_DSPABS06|M_DSPABS12|M_DSPABS16) // Everything up to 16-bit addresses
+#define C_LUADST (M_DSPR|M_DSPN) // Mask for LUA instruction destination
+#define C_MOVEC (M_DSPM|M_DSPPCU) // M0-M7 and SR, OMR, LA, LC, SP, SS, SSH, SSL
+#define C_DSPIM (M_DSPIM8 | M_DSPIM | M_DSPIM12) // All the immmediate sizes we want to alias
+
+// Xn Input Register X1 or X0 (24 Bits)
+// Yn Input Register Y1 or Y0 (24 Bits)
+// An Accumulator Registers A2, A1, A0 (A2 \97 8 Bits, A1 and A0 \97 24 Bits)
+// Bn Accumulator Registers B2, B1, B0 (B2 \97 8 Bits, B1 and B0 \97 24 Bits)
+// X Input Register X = X1: X0 (48 Bits)
+// Y Input Register Y = Y1: Y0 (48 Bits)
+// A Accumulator A = A2: A1: A0 (56 Bits)*
+// B Accumulator B = B2: B1: B0 (56 BIts)*
+// AB Accumulators A and B = A1: B1 (48 Bits)*
+// BA Accumulators B and A = B1: A1 (48 Bits)*
+// A10 Accumulator A = A1: A0 (48 Bits)
+// B10 Accumulator B= B1:B0 (48 bits)
+
+// Attribute masks
+#define PARMOVE 0x00000001L
+#define NOPARMO 0x00000000L
+
+// DSP EA modes
+
+#define DSP_EA_POSTDEC B8(00000000)
+#define DSP_EA_POSTINC B8(00001000)
+#define DSP_EA_POSTDEC1 B8(00010000)
+#define DSP_EA_POSTINC1 B8(00011000)
+#define DSP_EA_NOUPD B8(00100000)
+#define DSP_EA_INDEX B8(00101000)
+#define DSP_EA_PREDEC1 B8(00111000)
+#define DSP_EA_ABS B8(00110000)
+#define DSP_EA_IMM B8(00110100)
+
+
+// Mnemonic table structure
+#define MNTABDSP struct _mntabdsp
+MNTABDSP {
+ LONG mn0, mn1; // Addressing modes
+ WORD mnattr; // Attributes (PARMOVE, ...)
+ LONG mninst; // Instruction mask
+ WORD mncont; // Continuation (or -1)
+ int (* mnfunc)(LONG); // Mnemonic builder
+};
+
+// Addressing mode variables, output of dsp_amode()
+int dsp_am0; // Addressing mode
+int dsp_a0reg; // Register
+int dsp_am1; // Addressing mode
+int dsp_a1reg; // Register
+int dsp_am2; // Addressing mode
+int dsp_a2reg; // Register
+int dsp_am3; // Addressing mode
+int dsp_a3reg; // Register
+
+TOKEN dsp_a0expr[EXPRSIZE]; // Expression
+uint64_t dsp_a0exval; // Expression's value
+WORD dsp_a0exattr; // Expression's attribute
+SYM * dsp_a0esym; // External symbol involved in expr
+LONG dsp_a0memspace; // Addressing mode's memory space (P, X, Y)
+LONG dsp_a0perspace; // Peripheral space (X, Y - used in movep)
+TOKEN dsp_a1expr[EXPRSIZE]; // Expression
+uint64_t dsp_a1exval; // Expression's value
+WORD dsp_a1exattr; // Expression's attribute
+SYM * dsp_a1esym; // External symbol involved in expr
+LONG dsp_a1memspace; // Addressing mode's memory space (P, X, Y)
+LONG dsp_a1perspace; // Peripheral space (X, Y - used in movep)
+TOKEN dsp_a2expr[EXPRSIZE]; // Expression
+uint64_t dsp_a2exval; // Expression's value
+WORD dsp_a2exattr; // Expression's attribute
+SYM * dsp_a2esym; // External symbol involved in expr
+TOKEN dsp_a3expr[EXPRSIZE]; // Expression
+uint64_t dsp_a3exval; // Expression's value
+WORD dsp_a3exattr; // Expression's attribute
+SYM * dsp_a3esym; // External symbol involved in expr
+int dsp_k; // Multiplications sign
+TOKEN dspImmedEXPR[EXPRSIZE]; // Expression
+uint64_t dspImmedEXVAL; // Expression's value
+WORD dspImmedEXATTR; // Expression's attribute
+SYM * dspImmedESYM; // External symbol involved in expr
+int deposit_extra_ea; // Optional effective address extension
+
+
+// Extra ea deposit modes
+enum
+{
+ DEPOSIT_EXTRA_WORD = 1,
+ DEPOSIT_EXTRA_FIXUP = 2,
+};
+
+
+// Prototypes
+int dsp_amode(int maxea);
+LONG parmoves(WORD dest);
+int dsp_tcc4(LONG inst);
+
+#endif // __DSP56K_AMODE_H__
+
projects / rmac / blobdiff