1 /*-------------------------------------------------------------------------
2 gen.h - header file for code generation for PIC16
4 Written By - Sandeep Dutta . sandeep.dutta@usa.net (1998)
5 PIC port - T. Scott Dattalo scott@dattalo.com (2000)
6 PIC16 port - Martin Dubuc m.dubuc@rogers.com (2000)
8 This program is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by the
10 Free Software Foundation; either version 2, or (at your option) any
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 In other words, you are welcome to use, share and improve this program.
23 You are forbidden to forbid anyone else to use, share and improve
24 what you give them. Help stamp out software-hoarding!
25 -------------------------------------------------------------------------*/
27 #ifndef SDCCGENPIC16_H
28 #define SDCCGENPIC16_H
52 /* type asmop : a homogenised type for
53 all the different spaces an operand can be
58 short type; /* can have values
59 AOP_LIT - operand is a literal value
60 AOP_REG - is in registers
61 AOP_DIR - direct just a name
62 AOP_DPTR - dptr contains address of operand
63 AOP_DPTR2 - dptr2 contains address of operand (DS80C390 only).
64 AOP_R0/R1 - r0/r1 contains address of operand
65 AOP_STK - should be pushed on stack this
66 can happen only for the result
67 AOP_IMMD - immediate value for eg. remateriazable
68 AOP_CRY - carry contains the value of this
69 AOP_STR - array of strings
70 AOP_ACC - result is in the acc:b pair
72 short coff; /* current offset */
73 short size; /* total size */
74 unsigned code:1; /* is in Code space */
75 unsigned paged:1; /* in paged memory */
76 unsigned freed:1; /* already freed */
79 value *aop_lit; /* if literal */
80 regs *aop_reg[4]; /* array of registers */
81 char *aop_dir; /* if direct */
82 regs *aop_ptr; /* either -> to r0 or r1 */
83 char *aop_immd; /* if immediate others are implied */
84 int aop_stk; /* stack offset when AOP_STK */
85 char *aop_str[4]; /* just a string array containing the location */
86 /* regs *aop_alloc_reg; * points to a dynamically allocated register */
93 void genpic16Code (iCode *);
95 //extern char *fReturnpic16[];
96 //extern char *fReturn390[];
97 extern unsigned pic16_fReturnSizePic;
98 //extern char **fReturn;
101 #define AOP(op) op->aop
102 #define AOP_TYPE(op) AOP(op)->type
103 #define AOP_SIZE(op) AOP(op)->size
104 #define IS_AOP_PREG(x) (AOP(x) && (AOP_TYPE(x) == AOP_R1 || \
105 AOP_TYPE(x) == AOP_R0))
107 #define AOP_NEEDSACC(x) (AOP(x) && (AOP_TYPE(x) == AOP_CRY || \
108 AOP_TYPE(x) == AOP_DPTR || AOP_TYPE(x) == AOP_DPTR2 || \
111 #define AOP_INPREG(x) (x && (x->type == AOP_REG && \
112 (x->aopu.aop_reg[0] == pic16_regWithIdx(R0_IDX) || \
113 x->aopu.aop_reg[0] == pic16_regWithIdx(R1_IDX) )))
115 #define RESULTONSTACK(x) \
116 (IC_RESULT(x) && IC_RESULT(x)->aop && \
117 IC_RESULT(x)->aop->type == AOP_STK )
119 #define MOVA(x) if (strcmp(x,"a") && strcmp(x,"acc")) pic16_emitcode(";XXX mov","a,%s %s,%d",x,__FILE__,__LINE__);
120 #define CLRC pic16_emitcode(";XXX clr","c %s,%d",__FILE__,__LINE__);
123 #define BIT_NUMBER(x) (x & 7)
124 #define BIT_REGISTER(x) (x>>3)
133 #define FUNCTION_LABEL_INC 40
135 /*-----------------------------------------------------------------*/
136 /* Macros for emitting skip instructions */
137 /*-----------------------------------------------------------------*/
139 #define emitSKPC pic16_emitpcode(POC_BTFSS,pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_C_BIT))
140 #define emitSKPNC pic16_emitpcode(POC_BTFSC,pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_C_BIT))
141 #define emitSKPZ pic16_emitpcode(POC_BTFSS,pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_Z_BIT))
142 #define emitSKPNZ pic16_emitpcode(POC_BTFSC,pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_Z_BIT))
143 #define emitSKPDC pic16_emitpcode(POC_BTFSS,pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_DC_BIT))
144 #define emitSKPNDC pic16_emitpcode(POC_BTFSC,pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_DC_BIT))
145 #define emitCLRZ pic16_emitpcode(POC_BCF, pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_Z_BIT))
146 #define emitCLRC pic16_emitpcode(POC_BCF, pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_C_BIT))
147 #define emitCLRDC pic16_emitpcode(POC_BCF, pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_DC_BIT))
148 #define emitSETZ pic16_emitpcode(POC_BSF, pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_Z_BIT))
149 #define emitSETC pic16_emitpcode(POC_BSF, pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_C_BIT))
150 #define emitSETDC pic16_emitpcode(POC_BSF, pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_DC_BIT))
152 int pic16_getDataSize(operand *op);
153 void pic16_emitpcode(PIC_OPCODE poc, pCodeOp *pcop);
154 void pic16_emitpLabel(int key);
155 void pic16_emitcode (char *inst,char *fmt, ...);
156 void DEBUGpic16_emitcode (char *inst,char *fmt, ...);
157 void pic16_emitDebuggerSymbol (char *);
158 bool pic16_sameRegs (asmop *aop1, asmop *aop2 );
159 char *pic16_aopGet (asmop *aop, int offset, bool bit16, bool dname);
160 void DEBUGpic16_pic16_AopType(int line_no, operand *left, operand *right, operand *result);
163 bool pic16_genPlusIncr (iCode *ic);
164 void pic16_outBitAcc(operand *result);
165 void pic16_genPlusBits (iCode *ic);
166 void pic16_genPlus (iCode *ic);
167 bool pic16_genMinusDec (iCode *ic);
168 void pic16_addSign(operand *result, int offset, int sign);
169 void pic16_genMinusBits (iCode *ic);
170 void pic16_genMinus (iCode *ic);
173 pCodeOp *pic16_popGetLabel(unsigned int key);
174 pCodeOp *pic16_popCopyReg(pCodeOpReg *pc);
175 pCodeOp *pic16_popCopyGPR2Bit(pCodeOp *pc, int bitval);
176 pCodeOp *pic16_popGetLit(unsigned int lit);
177 pCodeOp *pic16_popGetLit2(unsigned int lit, pCodeOp *arg2);
178 pCodeOp *popGetWithString(char *str);
179 pCodeOp *pic16_popGet (asmop *aop, int offset);//, bool bit16, bool dname);
180 pCodeOp *pic16_popGetTempReg(void);
181 void pic16_popReleaseTempReg(pCodeOp *pcop);
183 pCodeOp *pic16_popCombine2(pCodeOpReg *src, pCodeOpReg *dst, int noalloc);
185 void pic16_aopPut (asmop *aop, char *s, int offset);
186 void pic16_outAcc(operand *result);
187 void pic16_aopOp (operand *op, iCode *ic, bool result);
188 void pic16_outBitC(operand *result);
189 void pic16_toBoolean(operand *oper);
190 void pic16_freeAsmop (operand *op, asmop *aaop, iCode *ic, bool pop);
191 const char *pic16_pCodeOpType( pCodeOp *pcop);
194 void dumpiCode(iCode *lic);