1 /*------------------------------------------------------------------------- 2 gen.h - header file for code generation for 8051 3 4 Written By - Sandeep Dutta . sandeep.dutta@usa.net (1998) 5 6 This program is free software; you can redistribute it and/or modify it 7 under the terms of the GNU General Public License as published by the 8 Free Software Foundation; either version 2, or (at your option) any 9 later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software 18 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 19 20 In other words, you are welcome to use, share and improve this program. 21 You are forbidden to forbid anyone else to use, share and improve 22 what you give them. Help stamp out software-hoarding! 23 -------------------------------------------------------------------------*/ 24 25 #ifndef SDCCGEN51_H 26 #define SDCCGEN51_H 27 28 enum 29 { 30 AOP_LIT = 1, 31 AOP_REG, AOP_DIR, 32 AOP_DPTR, AOP_R0, AOP_R1, 33 AOP_STK, AOP_IMMD, AOP_STR, 34 AOP_CRY, AOP_ACC, AOP_DUMMY 35 }; 36 37 /* type asmop : a homogenised type for 38 all the different spaces an operand can be 39 in */ 40 typedef struct asmop 41 { 42 short type; 43 /* can have values 44 AOP_LIT - operand is a literal value 45 AOP_REG - is in registers 46 AOP_DIR - direct just a name 47 AOP_DPTR - dptr contains address of operand 48 AOP_R0/R1 - r0/r1 contains address of operand 49 AOP_STK - should be pushed on stack this 50 can happen only for the result 51 AOP_IMMD - immediate value for eg. remateriazable 52 AOP_CRY - carry contains the value of this 53 AOP_STR - array of strings 54 AOP_ACC - result is in the acc:b pair 55 AOP_DUMMY - read as 0, discard writes 56 */ 57 short coff; /* current offset */ 58 short size; /* total size */ 59 unsigned code:1; /* is in Code space */ 60 unsigned paged:1; /* in paged memory */ 61 unsigned short allocated; /* number of times allocated */ 62 union 63 { 64 value *aop_lit; /* if literal */ 65 reg_info *aop_reg[8]; /* array of registers */ 66 char *aop_dir; /* if direct */ 67 reg_info *aop_ptr; /* either -> to r0 or r1 */ 68 struct 69 { 70 int from_cast_remat; /* cast remat created this : immd2 field used for highest order */ 71 char *aop_immd1; /* if immediate others are implied */ 72 char *aop_immd2; /* cast remat will generate this */ 73 } aop_immd; 74 symbol *aop_sym; /* symbol when AOP_STK */ 75 char *aop_str[8]; /* just a string array containing the location */ 76 } 77 aopu; 78 } 79 asmop; 80 81 void gen51Code (iCode *); 82 void mcs51_emitDebuggerSymbol (const char *); 83 84 extern char *fReturn8051[]; 85 extern unsigned fReturnSizeMCS51; 86 //extern char **fReturn; 87 88 #endif 89