1 /*------------------------------------------------------------------------- 2 3 SDCCralloc.h - header file register allocation 4 5 Written By - Sandeep Dutta . sandeep.dutta@usa.net (1998) 6 7 This program is free software; you can redistribute it and/or modify it 8 under the terms of the GNU General Public License as published by the 9 Free Software Foundation; either version 2, or (at your option) any 10 later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 20 21 In other words, you are welcome to use, share and improve this program. 22 You are forbidden to forbid anyone else to use, share and improve 23 what you give them. Help stamp out software-hoarding! 24 -------------------------------------------------------------------------*/ 25 #include "SDCCicode.h" 26 #include "SDCCBBlock.h" 27 #ifndef SDCCRALLOC_H 28 #define SDCCRALLOC_H 1 29 30 #define DEBUG_FAKE_EXTRA_REGS 0 31 32 #define USE_OLDSALLOC 0 // Change to 1 to use old stack allocator 33 34 enum 35 { 36 A_IDX = 0, 37 C_IDX, 38 B_IDX, 39 E_IDX, 40 D_IDX, 41 L_IDX, 42 H_IDX, 43 IYL_IDX, 44 IYH_IDX, 45 #if DEBUG_FAKE_EXTRA_REGS 46 M_IDX, 47 N_IDX, 48 O_IDX, 49 P_IDX, 50 Q_IDX, 51 R_IDX, 52 S_IDX, 53 T_IDX, 54 #endif 55 CND_IDX, 56 57 // These pairs are for internal use in code generation only. 58 IY_IDX, 59 BC_IDX, 60 DE_IDX, 61 HL_IDX 62 }; 63 64 enum 65 { 66 REG_PTR = 1, 67 REG_GPR = 2, 68 REG_CND = 4, 69 REG_PAIR = 8 70 }; 71 72 /* definition for the registers */ 73 typedef struct reg_info 74 { 75 short type; /* can have value 76 REG_GPR, REG_PTR or REG_CND */ 77 short rIdx; /* index into register table */ 78 char *name; /* name */ 79 unsigned isFree:1; /* is currently unassigned */ 80 } reg_info; 81 82 extern reg_info *regsZ80; 83 84 void assignRegisters (eBBlock **, int); 85 reg_info *regWithIdx (int); 86 87 void z80_assignRegisters (ebbIndex *); 88 bitVect *z80_rUmaskForOp (const operand * op); 89 90 void z80SpillThis (symbol *); 91 iCode *z80_ralloc2_cc(ebbIndex *ebbi); 92 93 void Z80RegFix (eBBlock ** ebbs, int count); 94 #endif 95