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
50 AOP_STA // asmop on stack
53 /* type asmop : a homogenised type for
54 all the different spaces an operand can be
59 short type; /* can have values
60 AOP_LIT - operand is a literal value
61 AOP_REG - is in registers
62 AOP_DIR - direct just a name
63 AOP_DPTR - dptr contains address of operand
64 AOP_DPTR2 - dptr2 contains address of operand (DS80C390 only).
65 AOP_R0/R1 - r0/r1 contains address of operand
66 AOP_STK - should be pushed on stack this
67 can happen only for the result
68 AOP_IMMD - immediate value for eg. remateriazable
69 AOP_CRY - carry contains the value of this
70 AOP_STR - array of strings
71 AOP_ACC - result is in the acc:b pair
73 short coff; /* current offset */
74 short size; /* total size */
75 unsigned code:1; /* is in Code space */
76 unsigned paged:1; /* in paged memory */
77 unsigned freed:1; /* already freed */
80 value *aop_lit; /* if literal */
81 regs *aop_reg[4]; /* array of registers */
82 char *aop_dir; /* if direct */
83 regs *aop_ptr; /* either -> to r0 or r1 */
84 char *aop_immd; /* if immediate others are implied */
85 int aop_stk; /* stack offset when AOP_STK */
86 char *aop_str[4]; /* just a string array containing the location */
87 /* regs *aop_alloc_reg; * points to a dynamically allocated register */
98 void genpic16Code (iCode *);
100 extern unsigned pic16_fReturnSizePic;
103 #define AOP(op) op->aop
104 #define AOP_TYPE(op) AOP(op)->type
105 #define AOP_SIZE(op) AOP(op)->size
106 #define IS_AOP_PREG(x) (AOP(x) && (AOP_TYPE(x) == AOP_R1 || \
107 AOP_TYPE(x) == AOP_R0))
109 #define AOP_NEEDSACC(x) (AOP(x) && (AOP_TYPE(x) == AOP_CRY || \
110 AOP_TYPE(x) == AOP_DPTR || AOP_TYPE(x) == AOP_DPTR2 || \
113 #define AOP_INPREG(x) (x && (x->type == AOP_REG && \
114 (x->aopu.aop_reg[0] == pic16_regWithIdx(R0_IDX) || \
115 x->aopu.aop_reg[0] == pic16_regWithIdx(R1_IDX) )))
117 #define RESULTONSTACK(x) \
118 (IC_RESULT(x) && IC_RESULT(x)->aop && \
119 IC_RESULT(x)->aop->type == AOP_STK )
120 #define RESULTONSTA(x) (IC_RESULT(x) && IC_RESULT(x)->aop && IC_RESULT(x)->aop->type == AOP_STA)
123 #define MOVA(x) if (strcmp(x,"a") && strcmp(x,"acc")) pic16_emitcode(";XXX mov","a,%s %s,%d",x,__FILE__,__LINE__);
124 #define CLRC pic16_emitcode(";XXX clr","c %s,%d",__FILE__,__LINE__);
127 #define BIT_NUMBER(x) (x & 7)
128 #define BIT_REGISTER(x) (x>>3)
137 #define FUNCTION_LABEL_INC 40
139 /*-----------------------------------------------------------------*/
140 /* Macros for emitting skip instructions */
141 /*-----------------------------------------------------------------*/
143 #define emitSKPC pic16_emitpcode(POC_BTFSS,pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_C_BIT))
144 #define emitSKPNC pic16_emitpcode(POC_BTFSC,pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_C_BIT))
145 #define emitSKPZ pic16_emitpcode(POC_BTFSS,pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_Z_BIT))
146 #define emitSKPNZ pic16_emitpcode(POC_BTFSC,pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_Z_BIT))
147 #define emitSKPDC pic16_emitpcode(POC_BTFSS,pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_DC_BIT))
148 #define emitSKPNDC pic16_emitpcode(POC_BTFSC,pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_DC_BIT))
149 #define emitCLRZ pic16_emitpcode(POC_BCF, pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_Z_BIT))
150 #define emitCLRC pic16_emitpcode(POC_BCF, pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_C_BIT))
151 #define emitCLRDC pic16_emitpcode(POC_BCF, pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_DC_BIT))
152 #define emitSETZ pic16_emitpcode(POC_BSF, pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_Z_BIT))
153 #define emitSETC pic16_emitpcode(POC_BSF, pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_C_BIT))
154 #define emitSETDC pic16_emitpcode(POC_BSF, pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_DC_BIT))
156 #define emitTOGC pic16_emitpcode(POC_BTG, pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_C_BIT))
158 int pic16_getDataSize(operand *op);
159 void pic16_emitpcode_real(PIC_OPCODE poc, pCodeOp *pcop);
160 #define pic16_emitpcode(poc,pcop) do { if (pic16_pcode_verbose) pic16_emitpcomment ("%s:%u(%s):", __FILE__, __LINE__, __FUNCTION__); pic16_emitpcode_real(poc,pcop); } while(0)
161 void pic16_emitpLabel(int key);
162 void pic16_emitcode (char *inst,char *fmt, ...);
163 void DEBUGpic16_emitcode (char *inst,char *fmt, ...);
164 void pic16_emitDebuggerSymbol (char *);
165 bool pic16_sameRegs (asmop *aop1, asmop *aop2 );
166 char *pic16_aopGet (asmop *aop, int offset, bool bit16, bool dname);
167 void DEBUGpic16_pic16_AopType(int line_no, operand *left, operand *right, operand *result);
168 void DEBUGpic16_pic16_AopTypeSign(int line_no, operand *left, operand *right, operand *result);
171 bool pic16_genPlusIncr (iCode *ic);
172 void pic16_outBitAcc(operand *result);
173 void pic16_genPlusBits (iCode *ic);
174 void pic16_genPlus (iCode *ic);
175 bool pic16_genMinusDec (iCode *ic);
176 void pic16_addSign(operand *result, int offset, int sign);
177 void pic16_genMinusBits (iCode *ic);
178 void pic16_genMinus (iCode *ic);
179 void pic16_genLeftShiftLiteral (operand *left, operand *right, operand *result, iCode *ic);
181 pCodeOp *pic16_popGet2p(pCodeOp *src, pCodeOp *dst);
182 void pic16_emitpcomment (char *fmt, ...);
184 pCodeOp *pic16_popGetLabel(unsigned int key);
185 pCodeOp *pic16_popCopyReg(pCodeOpReg *pc);
186 pCodeOp *pic16_popCopyGPR2Bit(pCodeOp *pc, int bitval);
187 pCodeOp *pic16_popGetLit(int lit);
188 pCodeOp *pic16_popGetLit2(int lit, pCodeOp *arg2);
189 pCodeOp *popGetWithString(char *str);
190 pCodeOp *pic16_popGet (asmop *aop, int offset);//, bool bit16, bool dname);
191 pCodeOp *pic16_popGetTempReg(int lock);
192 pCodeOp *pic16_popGetTempRegCond(bitVect *, bitVect *, int lock);
193 void pic16_popReleaseTempReg(pCodeOp *pcop, int lock);
195 pCodeOp *pic16_popCombine2(pCodeOpReg *src, pCodeOpReg *dst, int noalloc);
197 void pic16_aopPut (asmop *aop, char *s, int offset);
198 void pic16_outAcc(operand *result);
199 void pic16_aopOp (operand *op, iCode *ic, bool result);
200 void pic16_outBitC(operand *result);
201 void pic16_toBoolean(operand *oper);
202 void pic16_freeAsmop (operand *op, asmop *aaop, iCode *ic, bool pop);
203 const char *pic16_pCodeOpType( pCodeOp *pcop);
204 int pic16_my_powof2 (unsigned long num);
206 void pic16_mov2w (asmop *aop, int offset);
207 void pic16_mov2f(asmop *dst, asmop *src, int offset);
209 void dumpiCode(iCode *lic);
211 int inWparamList(char *s);
215 #define DUMP_FUNCTION_ENTRY 1
216 #define DUMP_FUNCTION_EXIT 0
218 #if DUMP_FUNCTION_ENTRY
219 #define FENTRY if(pic16_options.debgen&2)pic16_emitpcomment("**{\t%d %s", __LINE__, __FUNCTION__)
220 #define FENTRY2 if(pic16_options.debgen&2)pic16_emitpcomment("**{\t%d %s", __LINE__, __FUNCTION__)
226 #if DUMP_FUNCTION_EXIT
227 #define FEXIT if(pic16_options.debgen&2)pic16_emitpcomment("; **}", "%d %s", __LINE__, __FUNCTION__)
228 #define FEXIT2 if(pic16_options.debgen&2)pic16_emitpcomment("**{\t%d %s", __LINE__, __FUNCTION__)
234 #define ERROR werror(W_POSSBUG2, __FILE__, __LINE__)