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
49 /* type asmop : a homogenised type for
50 all the different spaces an operand can be
55 short type; /* can have values
56 AOP_LIT - operand is a literal value
57 AOP_REG - is in registers
58 AOP_DIR - direct just a name
59 AOP_DPTR - dptr contains address of operand
60 AOP_DPTR2 - dptr2 contains address of operand (DS80C390 only).
61 AOP_R0/R1 - r0/r1 contains address of operand
62 AOP_STK - should be pushed on stack this
63 can happen only for the result
64 AOP_IMMD - immediate value for eg. remateriazable
65 AOP_CRY - carry contains the value of this
66 AOP_STR - array of strings
67 AOP_ACC - result is in the acc:b pair
69 short coff; /* current offset */
70 short size; /* total size */
71 unsigned code:1; /* is in Code space */
72 unsigned paged:1; /* in paged memory */
73 unsigned freed:1; /* already freed */
76 value *aop_lit; /* if literal */
77 regs *aop_reg[4]; /* array of registers */
78 char *aop_dir; /* if direct */
79 regs *aop_ptr; /* either -> to r0 or r1 */
80 char *aop_immd; /* if immediate others are implied */
81 int aop_stk; /* stack offset when AOP_STK */
82 char *aop_str[4]; /* just a string array containing the location */
83 /* regs *aop_alloc_reg; * points to a dynamically allocated register */
90 void genpic16Code (iCode *);
92 //extern char *fReturnpic16[];
93 //extern char *fReturn390[];
94 extern unsigned pic16_fReturnSizePic;
95 //extern char **fReturn;
98 #define AOP(op) op->aop
99 #define AOP_TYPE(op) AOP(op)->type
100 #define AOP_SIZE(op) AOP(op)->size
101 #define IS_AOP_PREG(x) (AOP(x) && (AOP_TYPE(x) == AOP_R1 || \
102 AOP_TYPE(x) == AOP_R0))
104 #define AOP_NEEDSACC(x) (AOP(x) && (AOP_TYPE(x) == AOP_CRY || \
105 AOP_TYPE(x) == AOP_DPTR || AOP_TYPE(x) == AOP_DPTR2 || \
108 #define AOP_INPREG(x) (x && (x->type == AOP_REG && \
109 (x->aopu.aop_reg[0] == pic16_regWithIdx(R0_IDX) || \
110 x->aopu.aop_reg[0] == pic16_regWithIdx(R1_IDX) )))
112 #define RESULTONSTACK(x) \
113 (IC_RESULT(x) && IC_RESULT(x)->aop && \
114 IC_RESULT(x)->aop->type == AOP_STK )
116 #define MOVA(x) if (strcmp(x,"a") && strcmp(x,"acc")) pic16_emitcode(";XXX mov","a,%s %s,%d",x,__FILE__,__LINE__);
117 #define CLRC pic16_emitcode(";XXX clr","c %s,%d",__FILE__,__LINE__);
120 #define BIT_NUMBER(x) (x & 7)
121 #define BIT_REGISTER(x) (x>>3)
130 #define FUNCTION_LABEL_INC 40
132 /*-----------------------------------------------------------------*/
133 /* Macros for emitting skip instructions */
134 /*-----------------------------------------------------------------*/
136 #define emitSKPC pic16_emitpcode(POC_BTFSS,pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_C_BIT))
137 #define emitSKPNC pic16_emitpcode(POC_BTFSC,pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_C_BIT))
138 #define emitSKPZ pic16_emitpcode(POC_BTFSS,pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_Z_BIT))
139 #define emitSKPNZ pic16_emitpcode(POC_BTFSC,pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_Z_BIT))
140 #define emitSKPDC pic16_emitpcode(POC_BTFSS,pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_DC_BIT))
141 #define emitSKPNDC pic16_emitpcode(POC_BTFSC,pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_DC_BIT))
142 #define emitCLRZ pic16_emitpcode(POC_BCF, pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_Z_BIT))
143 #define emitCLRC pic16_emitpcode(POC_BCF, pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_C_BIT))
144 #define emitCLRDC pic16_emitpcode(POC_BCF, pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_DC_BIT))
145 #define emitSETZ pic16_emitpcode(POC_BSF, pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_Z_BIT))
146 #define emitSETC pic16_emitpcode(POC_BSF, pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_C_BIT))
147 #define emitSETDC pic16_emitpcode(POC_BSF, pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_DC_BIT))
149 int pic16_getDataSize(operand *op);
150 void pic16_emitpcode(PIC_OPCODE poc, pCodeOp *pcop);
151 void pic16_emitpLabel(int key);
152 void pic16_emitcode (char *inst,char *fmt, ...);
153 void DEBUGpic16_emitcode (char *inst,char *fmt, ...);
154 bool pic16_sameRegs (asmop *aop1, asmop *aop2 );
155 char *pic16_aopGet (asmop *aop, int offset, bool bit16, bool dname);
158 bool pic16_genPlusIncr (iCode *ic);
159 void pic16_outBitAcc(operand *result);
160 void pic16_genPlusBits (iCode *ic);
161 void pic16_genPlus (iCode *ic);
162 bool pic16_genMinusDec (iCode *ic);
163 void pic16_addSign(operand *result, int offset, int sign);
164 void pic16_genMinusBits (iCode *ic);
165 void pic16_genMinus (iCode *ic);
168 pCodeOp *pic16_popGetLabel(unsigned int key);
169 pCodeOp *pic16_popCopyReg(pCodeOpReg *pc);
170 pCodeOp *pic16_popCopyGPR2Bit(pCodeOp *pc, int bitval);
171 pCodeOp *pic16_popGetLit(unsigned int lit);
172 pCodeOp *pic16_popGetLit2(unsigned int lit, pCodeOp *arg2);
173 pCodeOp *popGetWithString(char *str);
174 pCodeOp *pic16_popGet (asmop *aop, int offset);//, bool bit16, bool dname);
175 pCodeOp *pic16_popGetTempReg(void);
176 void pic16_popReleaseTempReg(pCodeOp *pcop);
178 pCodeOp *pic16_popCombine2(pCodeOpReg *src, pCodeOpReg *dst, int noalloc);
180 void pic16_aopPut (asmop *aop, char *s, int offset);
181 void pic16_outAcc(operand *result);
182 void pic16_aopOp (operand *op, iCode *ic, bool result);
183 void pic16_outBitC(operand *result);
184 void pic16_toBoolean(operand *oper);
185 void pic16_freeAsmop (operand *op, asmop *aaop, iCode *ic, bool pop);
186 const char *pic16_pCodeOpType( pCodeOp *pcop);
189 void dumpiCode(iCode *lic);