2 // RMAC - Reboot's Macro Assembler for the Atari Jaguar Console System
3 // PARMODE.C - Addressing Modes Parser Include
4 // Copyright (C) 199x Landon Dyer, 2011 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 // This file is included (twice) to parse two addressing modes, into slightly
10 // different var names
15 if ((*tok >= KW_D0) && (*tok <= KW_D7))
20 else if ((*tok >= KW_A0) && (*tok <= KW_A7))
28 if (expr(AnEXPR, &AnEXVAL, &AnEXATTR, &AnESYM) != OK)
35 // (An,Xn[.siz][*scale])
36 // (PC,Xn[.siz][*scale])
38 // (d8,An,Xn[.siz][*scale])
40 // (d8,PC,Xn[.siz][*scale])
49 if ((*tok >= KW_A0) && (*tok <= KW_A7))
69 goto AMn_IX0; // Handle ",Xn[.siz][*scale])"
71 else if (*tok == KW_PC)
72 { // (PC,Xn[.siz][*scale])
76 // Common index handler; enter here with `tok' pointing at the comma.
78 AMn_IX0: // Handle indexed with missing expr
81 AnEXATTR = ABS | DEFINED;
83 AMn_IXN: // Handle any indexed (tok -> a comma)
88 if (*tok < KW_D0 || *tok > KW_A7)
91 AnIXREG = *tok++ & 15;
94 { // Index reg size: <empty> | .W | .L
104 case DOTB: // .B not allowed here...
109 { // scale: *1, *2, *4, *8
111 if (*tok++ != CONST || *tok > 8)
132 if (*tok++ != ')') // final ")"
137 else if (*tok == '[')
143 if (expr(AnEXPR, &AnEXVAL, &AnEXATTR, &AnESYM) != OK)
149 if ((*tok >= KW_A0) && (*tok <= KW_A7))
159 else if (*tok == ')')
168 else if (*tok == KW_PC)
175 else if (*tok == ')')
177 AMn = PCDISP; // expr(PC)
188 else if (*tok=='-' && tok[1]=='(' && ((tok[2]>=KW_A0) && (tok[2]<=KW_A7)) && tok[3]==')')
194 else if (*tok == KW_CCR)
200 else if (*tok == KW_SR)
206 else if (*tok == KW_USP)
221 if (expr(AnEXPR, &AnEXVAL, &AnEXATTR, &AnESYM) != OK)
230 else if (*tok != '(')
233 // Defined, absolute values from $FFFF8000..$00007FFF get optimized to absolute short
235 if ((AnEXATTR & (TDB|DEFINED)) == DEFINED && (AnEXVAL + 0x8000) < 0x10000)
249 if ((*tok >= KW_A0) && (*tok <= KW_A7))
263 else if (*tok == KW_PC)
278 // Addressing mode OK
284 // Cleanup dirty little macros