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
30 /* If you change these, you also have to update the library files
31 * device/lib/pic16/libsdcc/gptr{get,put}{1,2,3,4}.c */
32 #define GPTR_TAG_DATA 0x80
33 #define GPTR_TAG_EEPROM 0x40
34 #define GPTR_TAG_CODE 0x00 /* must be 0 becaue of UPPER(sym)==0 */
48 AOP_STA // asmop on stack
51 /* type asmop : a homogenised type for
52 all the different spaces an operand can be
57 short type; /* can have values
58 AOP_LIT - operand is a literal value
59 AOP_REG - is in registers
60 AOP_DIR - direct just a name
61 AOP_STK - should be pushed on stack this
62 can happen only for the result
63 AOP_CRY - carry contains the value of this
64 AOP_STR - array of strings
65 AOP_ACC - result is in the acc:b pair
67 short coff; /* current offset */
68 short size; /* total size */
69 unsigned code:1; /* is in Code space */
70 unsigned paged:1; /* in paged memory */
71 unsigned freed:1; /* already freed */
74 value *aop_lit; /* if literal */
75 regs *aop_reg[4]; /* array of registers */
76 char *aop_dir; /* if direct */
77 regs *aop_ptr; /* either -> to r0 or r1 */
78 int aop_stk; /* stack offset when AOP_STK */
79 char *aop_str[4]; /* just a string array containing the location */
80 /* regs *aop_alloc_reg; * points to a dynamically allocated register */
91 void genpic16Code (iCode *);
93 extern unsigned pic16_fReturnSizePic;
96 #define AOP(op) op->aop
97 #define AOP_TYPE(op) AOP(op)->type
98 #define AOP_SIZE(op) AOP(op)->size
100 #define AOP_NEEDSACC(x) (AOP(x) && (AOP_TYPE(x) == AOP_CRY || \
103 #define RESULTONSTACK(x) \
104 (IC_RESULT(x) && IC_RESULT(x)->aop && \
105 IC_RESULT(x)->aop->type == AOP_STK )
106 #define RESULTONSTA(x) (IC_RESULT(x) && IC_RESULT(x)->aop && IC_RESULT(x)->aop->type == AOP_STA)
109 #define MOVA(x) if (strcmp(x,"a") && strcmp(x,"acc")) pic16_emitcode(";XXX mov","a,%s %s,%d",x,__FILE__,__LINE__);
110 #define CLRC pic16_emitcode(";XXX clr","c %s,%d",__FILE__,__LINE__);
113 #define BIT_NUMBER(x) (x & 7)
114 #define BIT_REGISTER(x) (x>>3)
123 #define FUNCTION_LABEL_INC 40
125 /*-----------------------------------------------------------------*/
126 /* Macros for emitting skip instructions */
127 /*-----------------------------------------------------------------*/
129 #define emitSKPC pic16_emitpcode(POC_BTFSS,pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_C_BIT))
130 #define emitSKPNC pic16_emitpcode(POC_BTFSC,pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_C_BIT))
131 #define emitSKPZ pic16_emitpcode(POC_BTFSS,pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_Z_BIT))
132 #define emitSKPNZ pic16_emitpcode(POC_BTFSC,pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_Z_BIT))
133 #define emitSKPDC pic16_emitpcode(POC_BTFSS,pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_DC_BIT))
134 #define emitSKPNDC pic16_emitpcode(POC_BTFSC,pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_DC_BIT))
135 #define emitCLRZ pic16_emitpcode(POC_BCF, pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_Z_BIT))
136 #define emitCLRC pic16_emitpcode(POC_BCF, pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_C_BIT))
137 #define emitCLRDC pic16_emitpcode(POC_BCF, pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_DC_BIT))
138 #define emitSETZ pic16_emitpcode(POC_BSF, pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_Z_BIT))
139 #define emitSETC pic16_emitpcode(POC_BSF, pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_C_BIT))
140 #define emitSETDC pic16_emitpcode(POC_BSF, pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_DC_BIT))
142 #define emitTOGC pic16_emitpcode(POC_BTG, pic16_popCopyGPR2Bit(PCOP(&pic16_pc_status),PIC_C_BIT))
144 int pic16_getDataSize(operand *op);
145 void pic16_emitpcode_real(PIC_OPCODE poc, pCodeOp *pcop);
146 #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)
147 void pic16_emitpLabel(int key);
148 void pic16_emitcode (char *inst,char *fmt, ...);
149 void DEBUGpic16_emitcode (char *inst,char *fmt, ...);
150 void pic16_emitDebuggerSymbol (char *);
151 bool pic16_sameRegs (asmop *aop1, asmop *aop2 );
152 char *pic16_aopGet (asmop *aop, int offset, bool bit16, bool dname);
153 void DEBUGpic16_pic16_AopType(int line_no, operand *left, operand *right, operand *result);
154 void DEBUGpic16_pic16_AopTypeSign(int line_no, operand *left, operand *right, operand *result);
157 bool pic16_genPlusIncr (iCode *ic);
158 void pic16_outBitAcc(operand *result);
159 void pic16_genPlusBits (iCode *ic);
160 void pic16_genPlus (iCode *ic);
161 bool pic16_genMinusDec (iCode *ic);
162 void pic16_addSign(operand *result, int offset, int sign);
163 void pic16_genMinusBits (iCode *ic);
164 void pic16_genMinus (iCode *ic);
165 void pic16_genLeftShiftLiteral (operand *left, operand *right, operand *result, iCode *ic);
167 pCodeOp *pic16_popGet2p(pCodeOp *src, pCodeOp *dst);
168 void pic16_emitpcomment (char *fmt, ...);
170 pCodeOp *pic16_popGetLabel(int key);
171 pCodeOp *pic16_popCopyReg(pCodeOpReg *pc);
172 pCodeOp *pic16_popCopyGPR2Bit(pCodeOp *pc, int bitval);
173 pCodeOp *pic16_popGetLit(int lit);
174 pCodeOp *pic16_popGetLit2(int lit, pCodeOp *arg2);
175 pCodeOp *popGetWithString(char *str);
176 pCodeOp *pic16_popGet (asmop *aop, int offset);//, bool bit16, bool dname);
177 pCodeOp *pic16_popGetTempReg(int lock);
178 pCodeOp *pic16_popGetTempRegCond(bitVect *, bitVect *, int lock);
179 void pic16_popReleaseTempReg(pCodeOp *pcop, int lock);
181 pCodeOp *pic16_popCombine2(pCodeOpReg *src, pCodeOpReg *dst, int noalloc);
183 void pic16_aopPut (asmop *aop, char *s, int offset);
184 void pic16_outAcc(operand *result);
185 void pic16_aopOp (operand *op, iCode *ic, bool result);
186 void pic16_outBitC(operand *result);
187 void pic16_toBoolean(operand *oper);
188 void pic16_freeAsmop (operand *op, asmop *aaop, iCode *ic, bool pop);
189 const char *pic16_pCodeOpType( pCodeOp *pcop);
190 int pic16_my_powof2 (unsigned long num);
192 void pic16_mov2w (asmop *aop, int offset);
193 void pic16_mov2f(asmop *dst, asmop *src, int offset);
195 bool pic16_isLitOp(operand *op);
196 bool pic16_isLitAop(asmop *aop);
198 void dumpiCode(iCode *lic);
200 int inWparamList(char *s);
204 #define DUMP_FUNCTION_ENTRY 1
205 #define DUMP_FUNCTION_EXIT 0
207 #if DUMP_FUNCTION_ENTRY
208 #define FENTRY if(pic16_options.debgen&2)pic16_emitpcomment("**{\t%d %s", __LINE__, __FUNCTION__)
209 #define FENTRY2 if(pic16_options.debgen&2)pic16_emitpcomment("**{\t%d %s", __LINE__, __FUNCTION__)
215 #if DUMP_FUNCTION_EXIT
216 #define FEXIT if(pic16_options.debgen&2)pic16_emitpcomment("; **}", "%d %s", __LINE__, __FUNCTION__)
217 #define FEXIT2 if(pic16_options.debgen&2)pic16_emitpcomment("**{\t%d %s", __LINE__, __FUNCTION__)
223 #define ERROR werror(W_POSSBUG2, __FILE__, __LINE__)