173 lines
6.4 KiB
C
173 lines
6.4 KiB
C
/*-------------------------------------------------------------------------
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SDCCgen51.h - header file for code generation for 8051
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Written By - Sandeep Dutta . sandeep.dutta@usa.net (1998)
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PIC port - T. Scott Dattalo scott@dattalo.com (2000)
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option) any
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later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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In other words, you are welcome to use, share and improve this program.
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You are forbidden to forbid anyone else to use, share and improve
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what you give them. Help stamp out software-hoarding!
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-------------------------------------------------------------------------*/
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#ifndef SDCCGENPIC14_H
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#define SDCCGENPIC14_H
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enum
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{
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AOP_LIT = 1,
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AOP_REG, AOP_DIR,
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AOP_DPTR, AOP_DPTR2, AOP_R0, AOP_R1,
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AOP_STK, AOP_IMMD, AOP_STR,
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AOP_CRY, AOP_ACC
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};
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/* type asmop : a homogenised type for
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all the different spaces an operand can be
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in */
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typedef struct asmop
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{
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short type; /* can have values
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AOP_LIT - operand is a literal value
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AOP_REG - is in registers
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AOP_DIR - direct just a name
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AOP_DPTR - dptr contains address of operand
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AOP_DPTR2 - dptr2 contains address of operand (DS80C390 only).
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AOP_R0/R1 - r0/r1 contains address of operand
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AOP_STK - should be pushed on stack this
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can happen only for the result
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AOP_IMMD - immediate value for eg. remateriazable
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AOP_CRY - carry contains the value of this
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AOP_STR - array of strings
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AOP_ACC - result is in the acc:b pair
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*/
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short coff; /* current offset */
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short size; /* total size */
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unsigned code:1; /* is in Code space */
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unsigned paged:1; /* in paged memory */
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unsigned freed:1; /* already freed */
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union
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{
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value *aop_lit; /* if literal */
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regs *aop_reg[4]; /* array of registers */
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char *aop_dir; /* if direct */
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regs *aop_ptr; /* either -> to r0 or r1 */
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char *aop_immd; /* if immediate others are implied */
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int aop_stk; /* stack offset when AOP_STK */
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char *aop_str[4]; /* just a string array containing the location */
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}
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aopu;
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}
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asmop;
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void genpic14Code (iCode *);
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//extern char *fReturnpic14[];
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//extern char *fReturn390[];
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extern unsigned fReturnSizePic;
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//extern char **fReturn;
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#define AOP(op) op->aop
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#define AOP_TYPE(op) AOP(op)->type
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#define AOP_SIZE(op) AOP(op)->size
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#define IS_AOP_PREG(x) (AOP(x) && (AOP_TYPE(x) == AOP_R1 || \
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AOP_TYPE(x) == AOP_R0))
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#define AOP_NEEDSACC(x) (AOP(x) && (AOP_TYPE(x) == AOP_CRY || \
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AOP_TYPE(x) == AOP_DPTR || AOP_TYPE(x) == AOP_DPTR2 || \
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AOP(x)->paged))
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#define AOP_INPREG(x) (x && (x->type == AOP_REG && \
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(x->aopu.aop_reg[0] == pic14_regWithIdx(R0_IDX) || \
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x->aopu.aop_reg[0] == pic14_regWithIdx(R1_IDX) )))
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#define RESULTONSTACK(x) \
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(IC_RESULT(x) && IC_RESULT(x)->aop && \
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IC_RESULT(x)->aop->type == AOP_STK )
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#define MOVA(x) if (strcmp(x,"a") && strcmp(x,"acc")) pic14_emitcode(";XXX mov","a,%s %s,%d",x,__FILE__,__LINE__);
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#define CLRC pic14_emitcode(";XXX clr","c %s,%d",__FILE__,__LINE__);
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#define BIT_NUMBER(x) (x & 7)
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#define BIT_REGISTER(x) (x>>3)
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#define LSB 0
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#define MSB16 1
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#define MSB24 2
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#define MSB32 3
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#define FUNCTION_LABEL_INC 40
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/*-----------------------------------------------------------------*/
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/* Macros for emitting skip instructions */
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/*-----------------------------------------------------------------*/
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#define emitSKPC emitpcode(POC_BTFSS,popCopyGPR2Bit(PCOP(&pc_status),PIC_C_BIT))
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#define emitSKPNC emitpcode(POC_BTFSC,popCopyGPR2Bit(PCOP(&pc_status),PIC_C_BIT))
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#define emitSKPZ emitpcode(POC_BTFSS,popCopyGPR2Bit(PCOP(&pc_status),PIC_Z_BIT))
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#define emitSKPNZ emitpcode(POC_BTFSC,popCopyGPR2Bit(PCOP(&pc_status),PIC_Z_BIT))
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#define emitSKPDC emitpcode(POC_BTFSS,popCopyGPR2Bit(PCOP(&pc_status),PIC_DC_BIT))
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#define emitSKPNDC emitpcode(POC_BTFSC,popCopyGPR2Bit(PCOP(&pc_status),PIC_DC_BIT))
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#define emitCLRZ emitpcode(POC_BCF, popCopyGPR2Bit(PCOP(&pc_status),PIC_Z_BIT))
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#define emitCLRC emitpcode(POC_BCF, popCopyGPR2Bit(PCOP(&pc_status),PIC_C_BIT))
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#define emitCLRDC emitpcode(POC_BCF, popCopyGPR2Bit(PCOP(&pc_status),PIC_DC_BIT))
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#define emitSETZ emitpcode(POC_BSF, popCopyGPR2Bit(PCOP(&pc_status),PIC_Z_BIT))
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#define emitSETC emitpcode(POC_BSF, popCopyGPR2Bit(PCOP(&pc_status),PIC_C_BIT))
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#define emitSETDC emitpcode(POC_BSF, popCopyGPR2Bit(PCOP(&pc_status),PIC_DC_BIT))
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int pic14_getDataSize(operand *op);
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void emitpcode(PIC_OPCODE poc, pCodeOp *pcop);
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void pic14_emitcode (char *inst,char *fmt, ...);
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void DEBUGpic14_emitcode (char *inst,char *fmt, ...);
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asmop *newAsmop (short type);
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bool pic14_sameRegs (asmop *aop1, asmop *aop2 );
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char *aopGet (asmop *aop, int offset, bool bit16, bool dname);
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bool genPlusIncr (iCode *ic);
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void pic14_outBitAcc(operand *result);
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void genPlusBits (iCode *ic);
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void genPlus (iCode *ic);
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bool genMinusDec (iCode *ic);
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void addSign(operand *result, int offset, int sign);
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void genMinusBits (iCode *ic);
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void genMinus (iCode *ic);
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pCodeOp *popGetLabel(unsigned int key);
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pCodeOp *popCopyReg(pCodeOpReg *pc);
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pCodeOp *popCopyGPR2Bit(pCodeOp *pc, int bitval);
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pCodeOp *popGetLit(unsigned int lit);
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pCodeOp *popGetWithString(char *str);
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pCodeOp *popRegFromString(char *str);
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pCodeOp *popGet (asmop *aop, int offset, bool bit16, bool dname);
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void aopPut (asmop *aop, char *s, int offset);
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void pic14_outAcc(operand *result);
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void aopOp (operand *op, iCode *ic, bool result);
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void pic14_outBitC(operand *result);
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void pic14_toBoolean(operand *oper);
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void freeAsmop (operand *op, asmop *aaop, iCode *ic, bool pop);
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#endif
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