425 lines
9 KiB
C
425 lines
9 KiB
C
/* $Id$ */
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/*
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* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
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* See the copyright notice in the ACK home directory, in the file "Copyright".
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*/
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/* @(#)mach4.c 1.11 */
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/*
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* Motorola 68000/68010 syntax rules
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*/
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operation
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: { curr_instr = curr_token; }
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_operation
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;
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_operation
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: bcdx DREG ',' DREG
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{ emit2($1 | $2 | $4<<9);}
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| bcdx '-' '(' AREG ')' ',' '-' '(' AREG ')'
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{ emit2($1 | $4 | $9<<9 | 010);}
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| ADD sizedef ea_ea
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{ add($1, $2);}
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| AND sizenon ea_ea
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{ and($1, $2);}
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| SHIFT sizedef ea_ea
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{ shift_op($1, $2);}
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| BR expr
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{ branch($1, $2);}
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| DBR DREG ',' expr
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{ $4.val -= (DOTVAL+2);
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Xfit(fitw($4.val));
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emit2($1 | $2);
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#ifdef RELOCATION
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newrelo($4.typ, RELPC|RELO2|RELBR|RELWR);
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#endif
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emit2(loww($4.val));
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}
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| BITOP ea_ea
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{ bitop($1);}
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| OP_EA_D sizedef ea ',' DREG
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{ if ($2 != SIZE_W) {
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serror("illegal size");
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}
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emit2($1 | mrg_2 | $5<<9);
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ea_2(SIZE_W, DTA);
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}
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| LEA ea ',' AREG
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{ emit2(040700 | mrg_2 | $4<<9);
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ea_2(SIZE_L, CTR);
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}
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| op_ea ea
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{ emit2(($1&0177700) | mrg_2);
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ea_2($1&0300, $1&017);
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}
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| OP_NOOP
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{ emit2($1);}
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| CMP sizedef ea_ea
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{ cmp($2);}
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| MOVE sizenon ea_ea
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{ move($2);}
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| MOVEP sizedef ea_ea
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{ movep($2);}
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| MOVEM sizedef regs ',' notimmreg
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{ movem(0, $2, $3);}
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| MOVEM sizedef notimmreg ',' regs
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{ movem(1, $2, $5);}
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| MOVES sizedef ea_ea
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{ test68010();
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if (mrg_1 <= 017) {
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emit2(007000 | $2 | mrg_2);
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emit2(mrg_1 << 12 | 04000);
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ea_2($2,ALT|MEM);
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} else if (mrg_2 <= 017) {
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emit2(007000 | $2 | mrg_1);
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emit2(mrg_2 << 12);
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ea_1($2,ALT|MEM);
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} else
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badoperand();
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}
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| MOVEC creg ',' reg
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{ test68010();
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emit2(047172); emit2($2 | $4<<12);
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}
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| MOVEC reg ',' creg
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{ test68010();
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emit2(047173); emit2($4 | $2<<12);
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}
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| EXG reg ',' reg
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{ if (($2 & 010) == 0)
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emit2(
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(0140500|$4|$2<<9)
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+
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(($4&010)<<3)
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);
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else
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emit2(
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(0140610|$2|($4&07)<<9)
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-
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(($4&010)<<3)
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);
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}
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| OP_EXT sizedef DREG
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{ checksize($2, 2|4); emit2(044000 | $2+0100 | $3);}
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| SWAP DREG
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{ emit2(044100 | $2);}
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| STOP imm
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{ emit2($1); ea_2(SIZE_W, 0);}
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| LINK AREG ',' imm
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{ emit2(047120 | $2); ea_2(SIZE_W, 0);}
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| UNLK AREG
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{ emit2(047130 | $2);}
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| TRAP '#' absexp
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{ Xfit(fit4($3)); emit2(047100|low4($3));}
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| RTD imm
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{ test68010();
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emit2(047164);
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ea_2(SIZE_W, 0);
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}
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| MODEL
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{ model = $1;}
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| fp_op
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;
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bcdx : ABCD
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| ADDX sizedef
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{ $$ = $1 | $2;}
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;
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creg : CREG
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| SPEC { if ($1 != 075) badoperand(); $$ = 04000;}
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;
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op_ea : OP_EA
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| SZ_EA sizedef
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{ $$ = $1 | $2;}
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;
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regs : rrange
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| regs '/' rrange
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{ $$ = $1 | $3;}
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;
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rrange : reg
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{ $$ = 1<<$1;}
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| reg '-' reg
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{ if ($1 > $3)
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badoperand();
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for ($$ = 0; $1 <= $3; $1++)
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$$ |= (1<<$1);
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}
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;
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ea : DREG
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{ mrg_2 = $1;}
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| AREG
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{ mrg_2 = 010 | $1;}
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| SPEC
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{ mrg_2 = $1;}
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| notimmreg
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| imm
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;
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notimmreg
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: '(' AREG ')'
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{ mrg_2 = 020 | $2;}
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| '(' AREG ')' '+'
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{ mrg_2 = 030 | $2;}
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| '-' '(' AREG ')'
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{ mrg_2 = 040 | $3;}
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| expr sizenon
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{ exp_2 = $1; ea707172($2);
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RELOMOVE(rel_2, relonami);
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}
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| expr '(' reg sizenon ')'
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{ exp_2 = $1; ea5x73($3, $4);
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RELOMOVE(rel_2, relonami);
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}
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| expr '(' AREG ',' reg sizedef ')'
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{ exp_2 = $1; ea6x($3, $5, $6);
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RELOMOVE(rel_2, relonami);
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}
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| expr '(' PC ')'
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{ exp_2 = $1; ea72();
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RELOMOVE(rel_2, relonami);
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}
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| expr '(' PC ',' reg sizedef ')'
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{ exp_2 = $1; ea73($5, $6);
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RELOMOVE(rel_2, relonami);
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}
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;
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imm : '#' expr
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{ mrg_2 = 074; exp_2 = $2;
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RELOMOVE(rel_2, relonami);
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}
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;
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reg : DREG
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| AREG
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{ $$ = $1 | 010;}
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;
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sizedef : /* empty */
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{ $$ = SIZE_DEF;}
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| SIZE
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;
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sizenon : /* empty */
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{ $$ = SIZE_NON;}
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| SIZE
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;
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ea_ea : ea ','
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{ mrg_1 = mrg_2; exp_1 = exp_2;
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RELOMOVE(rel_1, rel_2);
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}
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ea
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;
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fp_op : CP
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{ co_id = $1; }
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fp_op1
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| { co_id = DEF_FP; }
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fp_op1
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;
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fp_op1 : FMOVE fsize ea ',' FPCR
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{ check_fsize($2, FSIZE_L);
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if ((mrg_2&070) == 010 && $5 != 001)
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badoperand();
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emit2((0170000|co_id|mrg_2));
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emit2((0100000|($5<<10)));
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ea_2(SIZE_L, 0);
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}
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| FMOVE fsize FPCR ',' ea
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{ check_fsize($2, FSIZE_L);
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if ((mrg_2&070) == 010 && $3 == 001)
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badoperand();
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emit2((0170000|co_id|mrg_2));
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emit2((0120000|($3<<10)));
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ea_2(SIZE_L, ALT);
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}
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| FMOVE fsize FPREG ',' FPREG
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{ emit2(0170000|co_id);
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emit2(($3<<10)|($5<<7));
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}
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| FMOVE fsize ea ',' FPREG
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{ ch_sz_dreg($2, mrg_2&070);
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emit2((0170000|co_id|mrg_2));
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emit2((0040000|($2<<10)|($5<<7)));
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ea_2(SIZE_L, DTA);
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}
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| FMOVE fsize FPREG ',' ea
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{ ch_sz_dreg($2, mrg_2&070);
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if ($2 == FSIZE_P)
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serror("packed decimal needs k-factor");
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emit2((0170000|co_id|mrg_2));
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emit2((0060000|($2<<10)|($3<<7)));
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ea_2(SIZE_L, DTA|ALT);
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}
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| FMOVE fsize FPREG ',' ea '{' '#' absexp '}'
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{ check_fsize($2, FSIZE_P);
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fit(sfit7($8));
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emit2((0170000|co_id|mrg_2));
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emit2((0066000|($3<<7)|low7($8)));
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ea_2(SIZE_L, MEM|DTA|ALT);
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}
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| FMOVE fsize FPREG ',' ea '{' DREG '}'
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{ check_fsize($2, FSIZE_P);
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emit2((0170000|co_id|mrg_2));
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emit2((0076000|($3<<7)|($7<<4)));
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ea_2(SIZE_L, MEM|DTA|ALT);
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}
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| FMOVECR fsize '#' absexp ',' FPREG
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{ fit(fit7($4));
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check_fsize($2, FSIZE_X);
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emit2(0170000|co_id);
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emit2(056000|($6<<7)|low7($4));
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}
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| FMOVEM FSIZE fregs ',' notimmreg
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{ check_fsize($2, FSIZE_X);
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if ((mrg_2&070) == 030)
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serror("bad addressing category");
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emit2((0170000|co_id|mrg_2));
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emit2(0160000 |
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(((mrg_2&070)==040 || ($3&04000)) ?
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$3 :
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(010000|reverse($3,8))));
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ea_2(SIZE_L, MEM|ALT);
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}
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| FMOVEM FSIZE notimmreg ',' fregs
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{ check_fsize($2, FSIZE_X);
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if ((mrg_2&070) == 040)
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serror("bad addressing category");
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emit2((0170000|co_id|mrg_2));
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emit2((0150000|(($5&04000)?$5:reverse($5,8))));
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ea_2(SIZE_L, MEM);
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}
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| FMOVEM SIZE fcregs ',' ea
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{ checksize($2, 4);
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if ((mrg_2&070) == 1 && $3!= 02000)
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serror("bad addressing category");
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if ((mrg_2 & 070) == 0 &&
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$3 != 02000 && $3 != 04000 && $3 != 010000)
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serror("bad addressing category");
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emit2((0170000|co_id|mrg_2));
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emit2((0120000|$3));
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ea_2(SIZE_L, ALT);
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}
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| FMOVEM SIZE ea ',' fcregs
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{ checksize($2, 4);
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if ((mrg_2&070) == 1 && $5!= 02000)
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serror("bad addressing category");
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if ((mrg_2 & 070) == 0 &&
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$5 != 02000 && $5 != 04000 && $5 != 010000)
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serror("bad addressing category");
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emit2((0170000|co_id|mrg_2));
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emit2((0100000|$5));
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ea_2(SIZE_L, 0);
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}
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| FDYADIC fsize ea ',' FPREG
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{ emit2((0170000|co_id|mrg_2));
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emit2((0040000|($2<<10)|($5<<7)|$1));
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ch_sz_dreg($2, mrg_2&070);
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ea_2(SIZE_L, DTA);
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}
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| FDYADIC fsize FPREG ',' FPREG
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{ check_fsize($2, FSIZE_X);
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emit2(0170000|co_id);
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emit2(($3<<10)|($5<<7)|$1);
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}
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| FMONADIC fsize ea ',' FPREG
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{ emit2((0170000|co_id|mrg_2));
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emit2((0040000|($2<<10)|($5<<7)|$1));
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ch_sz_dreg($2, mrg_2&070);
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ea_2(SIZE_L, DTA);
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}
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| FMONADIC fsize FPREG ',' FPREG
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{ check_fsize($2, FSIZE_X);
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emit2(0170000|co_id);
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emit2(($3<<10)|($5<<7)|$1);
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}
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| FMONADIC fsize FPREG
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{ check_fsize($2, FSIZE_X);
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emit2(0170000|co_id);
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emit2(($3<<10)|($3<<7)|$1);
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}
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| FSINCOS fsize ea ',' FPREG ':' FPREG
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{ emit2(0170000|co_id|mrg_2);
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emit2(0040000|($2<<10)|($7<<7)|$1|$5);
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ea_2(SIZE_L, DTA);
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}
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| FSINCOS fsize FPREG ',' FPREG ':' FPREG
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{ check_fsize($2, FSIZE_X);
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emit2(0170000|co_id);
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emit2(($3<<10)|($7<<7)|$1|$5);
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}
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| FBCC expr
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{ fbranch($1, $2);}
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| FDBCC DREG ',' expr
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{ emit2(0170110|co_id|$2);
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emit2($1);
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$4.val -= DOTVAL;
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fit(fitw($4.val));
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#ifdef RELOCATION
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newrelo($4.typ, RELPC|RELO2|RELBR|RELWR);
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#endif
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emit2(loww($4.val));
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}
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| FNOP
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{ emit2(0170200|co_id);
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emit2(0);
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}
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| FSCC ea
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{ emit2(0170100|co_id|mrg_2);
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emit2($1);
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ea_2(SIZE_B, DTA|ALT);
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}
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| FTST fsize ea
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{ emit2((0170000|co_id|mrg_2));
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emit2((0040072|($2<<10)));
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ch_sz_dreg($2, mrg_2&070);
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ea_2(SIZE_L, DTA);
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}
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| FTST fsize FPREG
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{ check_fsize($2, FSIZE_X);
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emit2(0170000|co_id);
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emit2(($3<<10)|072);
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}
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| FSAVRES ea
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{ if ((mrg_2&070) == ($1&070))
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badoperand();
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emit2((0170000|co_id|($1&0700)|mrg_2));
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ea_2(0, $1&07);
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}
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| FTRAPCC
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{ emit2(0170174|co_id);
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emit2($1);
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}
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| FTRAPCC SIZE imm
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{ checksize($2, 2|4);
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emit2((0170170|co_id|($2==SIZE_L?03:02)));
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emit2($1);
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ea_2($2,0);
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}
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;
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fregs : DREG
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{ $$ = 04000 | $1 << 4; }
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| frlist
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;
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frlist : frrange
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| frlist '/' frrange
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{ $$ = $1 | $3;}
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;
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frrange : FPREG
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{ $$ = 1 << $1; }
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| FPREG '-' FPREG
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{ if ($1 > $3)
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badoperand();
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for ($$ = 0; $1 <= $3; $1++)
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$$ |= (1 << $1);
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}
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;
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fcregs : FPCR
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{ $$ = $1 << 10; }
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| fcregs '/' FPCR
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{ $$ = $1 | ($3 << 10); }
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;
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fsize : /* empty */
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{ $$ = FSIZE_X; }
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| SIZE
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{ if ($1 == SIZE_L)
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$$ = FSIZE_L;
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else if ($1 == SIZE_W)
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$$ = FSIZE_W;
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else $$ = FSIZE_B;
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}
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| FSIZE
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;
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