Add function prototypes.
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carl
parent
9979fb37d2
commit
efecff78b9
3 changed files with 37 additions and 35 deletions
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@ -80,3 +80,18 @@ extern expr_t addr_inf; /* .val (address) up to 23 bits! */
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extern expr_t immed;
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#define regerr() serror("register error")
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/* Z8000 specific routines */
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void settype( int type );
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int twolog(int s);
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void setmod(int opr);
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void chtype(int opr, int typerange );
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void chreg(int opc, int reg);
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ATYPE checkaddr(valu_t addr );
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void emit_ad(expr_t ad_inf);
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void ldmcode(int wrd1,int wrd2, int num);
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valu_t adjust(valu_t absval);
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void branch(int opc,expr_t exp);
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void ldrel(int opc,expr_t exp);
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void shiftcode(int w1, int w2);
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void argerr(void);
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@ -91,7 +91,7 @@ f2 : F2_1 reg ',' src
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if ( oprtype[ SRC ] == IM
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&& ( $1 == 0x0B00 || $1 == 0x0A00 ) )
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/* cp or cpb */
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{ setmode( DST );
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{ setmod( DST );
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emit2( mode | $1 + 0x201 | $2<<4 );
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break;
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}
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@ -182,7 +182,7 @@ f2 : F2_1 reg ',' src
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}
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break;
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case REG: case IR: case DA: case X:
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setmode( SRC );
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setmod( SRC );
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emit2( mode | 0x2000 | $1 | $4<<4 | $2 );
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if ( mode>>12 == 4 ) emit_ad( addr_inf );
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break;
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@ -202,7 +202,7 @@ f2 : F2_1 reg ',' src
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if ( oprtype[ SRC ] == REG )
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{ switch( oprtype[ DST ] )
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{ case IR: case DA: case X:
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setmode( DST );
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setmod( DST );
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emit2( mode | 0x2E00 | $1 | $2<<4 | $4 );
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if ( mode>>12 == 4 ) emit_ad( addr_inf );
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break;
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@ -252,7 +252,7 @@ f2 : F2_1 reg ',' src
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emit4( immed.val );
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break;
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case REG: case IR: case DA: case X:
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setmode( SRC );
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setmod( SRC );
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emit2( mode | 0x1400 | $4<<4 | $2 );
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if ( mode>>12 == 4 ) emit_ad( addr_inf );
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break;
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@ -272,7 +272,7 @@ f2 : F2_1 reg ',' src
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if ( oprtype[ SRC ] == REG )
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{ switch( oprtype[ DST ] )
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{ case IR: case DA: case X:
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setmode( DST );
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setmod( DST );
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emit2( mode | 0x1D00 | $2<<4 | $4 );
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if ( mode>>12 == 4 ) emit_ad( addr_inf );
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break;
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@ -4,37 +4,33 @@
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*/
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#define RCSID5 "$Id$"
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settype( type )
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int type;
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void settype( int type )
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{ oprtype[ operand ] = type; }
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int twolog( s )
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int s;
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int twolog(int s)
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{ int twopower = 0;
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while ( (s>>=1) != 0 ) twopower++;
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return( twopower );
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}
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setmode( opr )
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int opr;
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{ mode = modetbl[ twolog( oprtype[opr] ) ] << 12; }
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void setmod(int opr)
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{
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mode = modetbl[ twolog( oprtype[opr] ) ] << 12;
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}
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chtype( opr, typerange )
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int opr,
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typerange;
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void chtype(int opr, int typerange )
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/* Check type of 'opr' with given 'typerange' and
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** set the global var 'mode'.
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*/
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{ if ( (oprtype[opr] & typerange) != oprtype[opr] ) argerr();
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else /* We have a permitted type for 'opr'. */ setmode( opr );
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else /* We have a permitted type for 'opr'. */ setmod( opr );
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}
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chreg( opc, reg )
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int opc, reg;
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void chreg(int opc, int reg)
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{ switch( opc ) {
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case 0xB10A: case 0x1B00: case 0x1900:
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/* R32 expected */ if (reg & 1) regerr(); break;
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@ -43,8 +39,7 @@ int opc, reg;
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}
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}
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ATYPE checkaddr( addr )
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valu_t addr;
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ATYPE checkaddr( valu_t addr )
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/* Called by functions emit_ad() and branch(). */
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{ ATYPE addr_struct;
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@ -57,8 +52,7 @@ valu_t addr;
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return( addr_struct );
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}
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emit_ad( ad_inf )
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expr_t ad_inf;
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void emit_ad(expr_t ad_inf)
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/* When the type of an operand is 'da' or 'x' this function
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** emits the address.
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*/
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@ -75,8 +69,7 @@ expr_t ad_inf;
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}
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ldmcode( wrd1, wrd2, num )
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int wrd1, wrd2, num;
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void ldmcode(int wrd1,int wrd2, int num)
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{ fit(fit4(num-1));
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emit2( mode | wrd1 );
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emit2( wrd2<<8 | num-1 );
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@ -84,8 +77,7 @@ int wrd1, wrd2, num;
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}
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valu_t adjust( absval )
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valu_t absval;
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valu_t adjust(valu_t absval)
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{ valu_t val = absval - DOTVAL - 2;
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if ( pass == PASS_2 && val > 0 ) val -= DOTGAIN;
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@ -93,9 +85,7 @@ valu_t absval;
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}
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branch( opc, exp )
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int opc;
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expr_t exp;
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void branch(int opc,expr_t exp)
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/* This routine determines for the F3 format instructions whether the
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** relative address is small enough to fit in normal code; If this is
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** so normal code is emitted otherwise 'long' code is emitted contai-
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@ -145,9 +135,7 @@ expr_t exp;
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}
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ldrel( opc, exp )
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int opc;
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expr_t exp;
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void ldrel(int opc,expr_t exp)
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/* This routine determines for the F4 format instructions whether the
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** address is within the same segment (meaning a relative address of
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** less than 16 bits); If this is so normal code is emitted otherwise
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@ -160,8 +148,7 @@ expr_t exp;
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}
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shiftcode( w1, w2 )
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int w1, w2;
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void shiftcode(int w1, int w2)
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{ switch( w1 & 0x0F04 )
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{ /* Remember: w2 negative means right shift ! */
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case 0x200: /*byte*/ fit( w2>=-8 && w2<=8 ); break;
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@ -173,5 +160,5 @@ int w1, w2;
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}
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argerr()
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void argerr(void)
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{ serror( "illegal operand" ); }
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