1 /*-------------------------------------------------------------------------
2 SDCCgen51.h - header file for code generation for 8051
4 Written By - Sandeep Dutta . sandeep.dutta@usa.net (1998)
5 PIC port - T. Scott Dattalo scott@dattalo.com (2000)
7 This program is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by the
9 Free Software Foundation; either version 2, or (at your option) any
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
21 In other words, you are welcome to use, share and improve this program.
22 You are forbidden to forbid anyone else to use, share and improve
23 what you give them. Help stamp out software-hoarding!
24 -------------------------------------------------------------------------*/
26 #ifndef SDCCGENPIC14_H
27 #define SDCCGENPIC14_H
29 extern int debug_verbose;
32 /*fprintf (stderr, "%s:%u:%s: *{*\n", __FILE__, __LINE__, __FUNCTION__);*/ \
33 if (options.debug || debug_verbose) { \
34 emitpComment ("; %s:%u:%s *{*", __FILE__, __LINE__, __FUNCTION__); \
38 /*fprintf (stderr, "%s:%u:%s: *}*\n", __FILE__, __LINE__, __FUNCTION__);*/ \
39 if (options.debug || debug.verbose) { \
40 emitpComment ("; %s:%u:%s *}*", __FILE__, __LINE__, __FUNCTION__); \
50 AOP_DPTR, AOP_DPTR2, AOP_R0, AOP_R1,
51 AOP_STK, AOP_IMMD, AOP_STR,
57 /* type asmop : a homogenised type for
58 all the different spaces an operand can be
63 short type; /* can have values
64 AOP_LIT - operand is a literal value
65 AOP_REG - is in registers
66 AOP_DIR - direct just a name
67 AOP_DPTR - dptr contains address of operand
68 AOP_DPTR2 - dptr2 contains address of operand (DS80C390 only).
69 AOP_R0/R1 - r0/r1 contains address of operand
70 AOP_STK - should be pushed on stack this
71 can happen only for the result
72 AOP_IMMD - immediate value for eg. remateriazable
73 AOP_CRY - carry contains the value of this
74 AOP_STR - array of strings
75 AOP_ACC - result is in the acc:b pair
77 short coff; /* current offset */
78 short size; /* total size */
79 unsigned code:1; /* is in Code space */
80 unsigned paged:1; /* in paged memory */
81 unsigned freed:1; /* already freed */
84 value *aop_lit; /* if literal */
85 regs *aop_reg[4]; /* array of registers */
86 char *aop_dir; /* if direct */
87 regs *aop_ptr; /* either -> to r0 or r1 */
88 char *aop_immd; /* if immediate others are implied */
89 int aop_stk; /* stack offset when AOP_STK */
90 char *aop_str[4]; /* just a string array containing the location */
97 void genpic14Code (iCode *);
99 extern unsigned fReturnSizePic;
102 #define AOP(op) op->aop
103 #define AOP_TYPE(op) AOP(op)->type
104 #define AOP_SIZE(op) AOP(op)->size
105 #define IS_AOP_PREG(x) (AOP(x) && (AOP_TYPE(x) == AOP_R1 || \
106 AOP_TYPE(x) == AOP_R0))
108 #define AOP_NEEDSACC(x) (AOP(x) && (AOP_TYPE(x) == AOP_CRY || \
109 AOP_TYPE(x) == AOP_DPTR || AOP_TYPE(x) == AOP_DPTR2 || \
112 #define AOP_INPREG(x) (x && (x->type == AOP_REG && \
113 (x->aopu.aop_reg[0] == pic14_regWithIdx(R0_IDX) || \
114 x->aopu.aop_reg[0] == pic14_regWithIdx(R1_IDX) )))
116 #define RESULTONSTACK(x) \
117 (IC_RESULT(x) && IC_RESULT(x)->aop && \
118 IC_RESULT(x)->aop->type == AOP_STK )
120 #define MOVA(x) if (strcmp(x,"a") && strcmp(x,"acc")) pic14_emitcode(";XXX mov","a,%s %s,%d",x,__FILE__,__LINE__);
121 #define CLRC pic14_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 emitpcode(POC_BTFSS,popCopyGPR2Bit(PCOP(&pc_status),PIC_C_BIT))
140 #define emitSKPNC emitpcode(POC_BTFSC,popCopyGPR2Bit(PCOP(&pc_status),PIC_C_BIT))
141 #define emitSKPZ emitpcode(POC_BTFSS,popCopyGPR2Bit(PCOP(&pc_status),PIC_Z_BIT))
142 #define emitSKPNZ emitpcode(POC_BTFSC,popCopyGPR2Bit(PCOP(&pc_status),PIC_Z_BIT))
143 #define emitSKPDC emitpcode(POC_BTFSS,popCopyGPR2Bit(PCOP(&pc_status),PIC_DC_BIT))
144 #define emitSKPNDC emitpcode(POC_BTFSC,popCopyGPR2Bit(PCOP(&pc_status),PIC_DC_BIT))
145 #define emitCLRZ emitpcode(POC_BCF, popCopyGPR2Bit(PCOP(&pc_status),PIC_Z_BIT))
146 #define emitCLRC emitpcode(POC_BCF, popCopyGPR2Bit(PCOP(&pc_status),PIC_C_BIT))
147 #define emitCLRDC emitpcode(POC_BCF, popCopyGPR2Bit(PCOP(&pc_status),PIC_DC_BIT))
148 #define emitSETZ emitpcode(POC_BSF, popCopyGPR2Bit(PCOP(&pc_status),PIC_Z_BIT))
149 #define emitSETC emitpcode(POC_BSF, popCopyGPR2Bit(PCOP(&pc_status),PIC_C_BIT))
150 #define emitSETDC emitpcode(POC_BSF, popCopyGPR2Bit(PCOP(&pc_status),PIC_DC_BIT))
152 int pic14_getDataSize(operand *op);
153 void emitpcode(PIC_OPCODE poc, pCodeOp *pcop);
154 void emitpComment (const char *fmt, ...);
155 void emitpLabel(int key);
156 void pic14_emitcode (char *inst,char *fmt, ...);
157 void DEBUGpic14_emitcode (char *inst,char *fmt, ...);
158 void pic14_emitDebuggerSymbol (char *);
159 asmop *newAsmop (short type);
160 bool pic14_sameRegs (asmop *aop1, asmop *aop2 );
161 char *aopGet (asmop *aop, int offset, bool bit16, bool dname);
164 bool genPlusIncr (iCode *ic);
165 void pic14_outBitAcc(operand *result);
166 void genPlusBits (iCode *ic);
167 void genPlus (iCode *ic);
168 bool genMinusDec (iCode *ic);
169 void addSign(operand *result, int offset, int sign);
170 void genMinusBits (iCode *ic);
171 void genMinus (iCode *ic);
174 pCodeOp *popGetLabel(unsigned int key);
175 pCodeOp *popCopyReg(pCodeOpReg *pc);
176 pCodeOp *popCopyGPR2Bit(pCodeOp *pc, int bitval);
177 pCodeOp *popGetLit(unsigned int lit);
178 pCodeOp *popGetWithString(char *str, int isExtern);
179 pCodeOp *popRegFromString(char *str, int size, int offset);
180 pCodeOp *popGet (asmop *aop, int offset);//, bool bit16, bool dname);
181 pCodeOp *popGetAddr (asmop *aop, int offset, int index);
182 pCodeOp *popGetTempReg(void);
183 void popReleaseTempReg(pCodeOp *pcop);
186 void aopPut (asmop *aop, char *s, int offset);
187 void pic14_outAcc(operand *result);
188 void aopOp (operand *op, iCode *ic, bool result);
189 void pic14_outBitC(operand *result);
190 void pic14_toBoolean(operand *oper);
191 void freeAsmop (operand *op, asmop *aaop, iCode *ic, bool pop);
192 void mov2w (asmop *aop, int offset);
193 const char *pCodeOpType( pCodeOp *pcop);
195 int aop_isLitLike (asmop *aop);
196 int op_isLitLike (operand *op);