381 lines
9.3 KiB
C
381 lines
9.3 KiB
C
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/*
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* (c) copyright 1990 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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#define RCSID4 "$Header$"
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/*
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* VAX-11 machine dependent yacc syntax rules
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*/
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/* _b, _w, and _l are ordinary READ/MODIFY/WRITE operands, the letter indicates
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the size,
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A means effective ADDRESS (must be memory),
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B means branch displacement,
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V means effective address or register;
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Here, no difference is made between Modify and Write.
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*/
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operation
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:
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{ op_ind = 0; }
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oper
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{ if ((unsigned) $2 < 0x100) {
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emit1((int)$2);
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}
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else {
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emit1((int)$2&0xff);
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emit1((int)$2>>8);
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}
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operands(op_ind);
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}
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| OP1_Bx expr { branch($1, $2); }
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| OP1_Be expr { op_ind = 0; ext_branch($1, $2); }
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| OP2_l_Be { op_ind = 0; opnd[0].size = 4; }
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opnd ',' expr
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{ ext_branch($1, $5); }
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| OP3_l_V_Be { op_ind = 0; opnd[0].size = 4;
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opnd[1].size = -1;
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}
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opnd ',' opnd ',' expr
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{ ext_branch($1, $7); }
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;
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OP1_O
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: OP1_b { opnd[0].size = 1; $$ = $1; }
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| OP1_w { opnd[0].size = 2; $$ = $1; }
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| OP1_l { opnd[0].size = 4; $$ = $1; }
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| OP1_u
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;
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OP1_B
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: OP1_Bb { opnd[0].size = 1; $$ = $1; }
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| OP1_Bw { opnd[0].size = 2; $$ = $1; }
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| OP1_Bl { opnd[0].size = 4; $$ = $1; }
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;
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OP2_O_O
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: OP2_b_b { opnd[0].size = 1; opnd[1].size = 1; $$ = $1; }
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| OP2_b_l { opnd[0].size = 1; opnd[1].size = 4; $$ = $1; }
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| OP2_b_u { opnd[0].size = 1; opnd[1].size = 0; $$ = $1; }
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| OP2_b_w { opnd[0].size = 1; opnd[1].size = 2; $$ = $1; }
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| OP2_l_b { opnd[0].size = 4; opnd[1].size = 1; $$ = $1; }
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| OP2_l_l { opnd[0].size = 4; opnd[1].size = 4; $$ = $1; }
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| OP2_l_u { opnd[0].size = 4; opnd[1].size = 0; $$ = $1; }
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| OP2_l_w { opnd[0].size = 4; opnd[1].size = 2; $$ = $1; }
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| OP2_u_b { opnd[0].size = 0; opnd[1].size = 1; $$ = $1; }
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| OP2_u_l { opnd[0].size = 0; opnd[1].size = 4; $$ = $1; }
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| OP2_u_u { opnd[0].size = 0; opnd[1].size = 0; $$ = $1; }
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| OP2_u_w { opnd[0].size = 0; opnd[1].size = 2; $$ = $1; }
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| OP2_w_b { opnd[0].size = 2; opnd[1].size = 1; $$ = $1; }
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| OP2_w_l { opnd[0].size = 2; opnd[1].size = 4; $$ = $1; }
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| OP2_w_u { opnd[0].size = 2; opnd[1].size = 0; $$ = $1; }
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| OP2_w_w { opnd[0].size = 2; opnd[1].size = 2; $$ = $1; }
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;
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OP2_A_O
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: OP2_A_l { opnd[1].size = 4; $$ = $1; }
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;
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OP2_O_B
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: OP2_l_Bb { opnd[0].size = 4; opnd[1].size = 1; $$ = $1; }
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;
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OP2_O_A
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: OP2_l_A { opnd[0].size = 4; $$ = $1; }
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;
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OP3_O_O_O
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: OP3_b_b_b { opnd[0].size = 1; opnd[1].size = 1;
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opnd[2].size = 1; $$ = $1;
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}
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| OP3_b_l_l { opnd[0].size = 1; opnd[1].size = 4;
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opnd[2].size = 4; $$ = $1;
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}
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| OP3_b_u_u { opnd[0].size = 1; opnd[1].size = 0;
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opnd[2].size = 0; $$ = $1;
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}
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| OP3_l_l_l { opnd[0].size = 4; opnd[1].size = 4;
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opnd[2].size = 4; $$ = $1;
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}
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| OP3_u_u_u { opnd[0].size = 0; opnd[1].size = 0;
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opnd[2].size = 0; $$ = $1;
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}
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| OP3_w_w_w { opnd[0].size = 2; opnd[1].size = 2;
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opnd[2].size = 2; $$ = $1;
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}
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;
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OP3_O_O_B
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: OP3_l_l_Bb { opnd[0].size = 4; opnd[1].size = 4;
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opnd[2].size = 1; $$ = $1;
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}
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| OP3_l_V_Bb { opnd[0].size = 4; opnd[1].size = -1;
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opnd[2].size = 1; $$ = $1;
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}
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;
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OP3_O_O_A
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: OP3_b_w_A { opnd[0].size = 1; opnd[1].size = 2; $$ = $1; }
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| OP3_l_w_A { opnd[0].size = 4; opnd[1].size = 2; $$ = $1; }
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| OP3_u_w_A { opnd[0].size = 0; opnd[1].size = 2; $$ = $1; }
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;
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OP3_O_A_A
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: OP3_w_A_A { opnd[0].size = 2; $$ = $1; }
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;
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OP3_O_A_O
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: OP3_w_A_l { opnd[0].size = 2; opnd[2].size = 4; $$ = $1; }
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;
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OP4_O_O_O_O
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: OP4_l_b_V_l { opnd[0].size = 4; opnd[1].size = 1;
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opnd[2].size = -1; opnd[3].size = 4;
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$$ = $1;
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}
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| OP4_l_l_b_V { opnd[0].size = 4; opnd[1].size = 4;
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opnd[2].size = 1; opnd[3].size = -1;
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$$ = $1;
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}
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| OP4_l_l_l_u { opnd[0].size = 4; opnd[1].size = 4;
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opnd[2].size = 4; opnd[3].size = 0;
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$$ = $1;
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}
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| OP4_l_u_l_l { opnd[0].size = 4; opnd[1].size = 0;
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opnd[2].size = 4; opnd[3].size = 4;
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$$ = $1;
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}
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;
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OP4_O_O_O_B
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: OP4_b_b_b_Bw { opnd[0].size = 1; opnd[1].size = 1;
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opnd[2].size = 1; opnd[3].size = 2;
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$$ = $1;
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}
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| OP4_l_l_l_Bw { opnd[0].size = 4; opnd[1].size = 4;
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opnd[2].size = 4; opnd[3].size = 2;
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$$ = $1;
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}
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| OP4_u_u_u_Bw { opnd[0].size = 0; opnd[1].size = 0;
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opnd[2].size = 0; opnd[3].size = 2;
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$$ = $1;
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}
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| OP4_w_w_w_Bw { opnd[0].size = 2; opnd[1].size = 2;
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opnd[2].size = 2; opnd[3].size = 2;
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$$ = $1;
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}
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;
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OP4_O_A_O_A
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: OP4_w_A_w_A { opnd[0].size = 2; opnd[2].size = 2; $$ = $1; }
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;
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OP4_O_A_A_O
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: OP4_w_A_A_b { opnd[0].size = 2; opnd[3].size = 1; $$ = $1; }
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;
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OP4_O_A_A_A
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: OP4_w_A_A_A { opnd[0].size = 2; $$ = $1; }
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;
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OP4_A_O_O_A
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: OP4_A_l_w_A { opnd[1].size = 4; opnd[2].size = 2; $$ = $1; }
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;
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OP5_O_A_A_O_A
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: OP5_w_A_A_w_A { opnd[0].size = 2; opnd[3].size = 2; $$ = $1; }
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;
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OP5_O_A_O_O_A
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: OP5_w_A_b_w_A { opnd[0].size = 2; opnd[3].size = 2;
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opnd[2].size = 1; $$ = $1;
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}
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;
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OP5_O_O_O_O_O
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: OP5_u_b_u_l_u { opnd[0].size = 0; opnd[1].size = 1;
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opnd[2].size = 0; opnd[3].size = 4;
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opnd[4].size = 0; $$ = $1;
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}
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| OP5_u_w_u_l_u { opnd[0].size = 0; opnd[1].size = 2;
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opnd[2].size = 0; opnd[3].size = 4;
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opnd[4].size = 0; $$ = $1;
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}
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;
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OP6_O_O_O_O_O_O
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: OP6_l_l_l_l_l_l { opnd[0].size = 4; opnd[1].size = 4;
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opnd[2].size = 4; opnd[3].size = 4;
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opnd[4].size = 4; opnd[5].size = 4;
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$$ = $1;
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}
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;
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OP6_O_A_O_A_O_A
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: OP6_w_A_b_A_w_A { opnd[0].size = 2; opnd[2].size = 1;
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opnd[4].size = 2; $$ = $1;
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}
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| OP6_w_A_w_A_w_A { opnd[0].size = 2; opnd[2].size = 2;
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opnd[4].size = 2; $$ = $1;
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}
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;
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OP6_O_O_A_O_O_A
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: OP6_b_w_A_b_w_A { opnd[0].size = 1; opnd[1].size = 2;
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opnd[3].size = 1; opnd[4].size = 2;
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$$ = $1;
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}
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;
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CASE_O_O_O
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: CASE_b_b_b { opnd[0].size = 1; opnd[1].size = 1;
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opnd[2].size = 1; $$ = $1;
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}
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| CASE_w_w_w { opnd[0].size = 2; opnd[1].size = 2;
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opnd[2].size = 2; $$ = $1;
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}
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| CASE_l_l_l { opnd[0].size = 4; opnd[1].size = 4;
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opnd[2].size = 4; $$ = $1;
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}
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;
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oper
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: OP0
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| OP1_O opnd { $$ = $1; }
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| OP1_A ea { $$ = $1; }
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| OP1_B expr { $$ = $1;
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opnd[0].exp = $2;
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RELOMOVE(opnd[0].relo, relonami);
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opnd[0].mode = DISPL;
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op_ind = 1;
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}
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| OP2_O_O opnd ',' opnd
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{ $$ = $1; }
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| OP2_A_O ea ',' opnd
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{ $$ = $1; }
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| OP2_O_B opnd ',' expr
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{ $$ = $1;
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opnd[op_ind].exp = $4;
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RELOMOVE(opnd[op_ind].relo, relonami);
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opnd[op_ind].mode = DISPL;
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op_ind++;
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}
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| OP2_A_A ea ',' ea
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{ $$ = $1; }
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| OP2_O_A opnd ',' ea
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{ $$ = $1; }
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| OP3_O_O_O opnd ',' opnd ',' opnd
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{ $$ = $1; }
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| OP3_O_O_B opnd ',' opnd ',' expr
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{ $$ = $1;
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opnd[op_ind].exp = $6;
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RELOMOVE(opnd[op_ind].relo, relonami);
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opnd[op_ind].mode = DISPL;
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op_ind++;
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}
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| OP3_O_O_A opnd ',' opnd ',' ea
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{ $$ = $1; }
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| OP3_O_A_A opnd ',' ea ',' ea
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{ $$ = $1; }
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| OP3_O_A_O opnd ',' ea ',' opnd
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{ $$ = $1; }
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| OP4_O_O_O_O opnd ',' opnd ',' opnd ',' opnd
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{ $$ = $1; }
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| OP4_O_O_O_B opnd ',' opnd ',' opnd ',' expr
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{ $$ = $1;
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opnd[op_ind].exp = $8;
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RELOMOVE(opnd[op_ind].relo, relonami);
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opnd[op_ind].mode = DISPL;
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op_ind++;
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}
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| OP4_O_A_O_A opnd ',' ea ',' opnd ',' ea
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{ $$ = $1; }
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| OP4_O_A_A_O opnd ',' ea ',' ea ',' opnd
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{ $$ = $1; }
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| OP4_A_O_O_A ea ',' opnd ',' opnd ',' ea
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{ $$ = $1; }
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| OP4_O_A_A_A opnd ',' ea ',' ea ',' ea
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{ $$ = $1; }
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| OP5_O_A_A_O_A opnd ',' ea ',' ea ',' opnd ',' ea
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{ $$ = $1; }
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| OP5_O_A_O_O_A opnd ',' ea ',' opnd ',' opnd ',' ea
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{ $$ = $1; }
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| OP5_O_O_O_O_O opnd ',' opnd ',' opnd ',' opnd ',' opnd
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{ $$ = $1; }
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| OP6_O_O_O_O_O_O opnd ',' opnd ',' opnd ',' opnd ',' opnd ',' opnd
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{ $$ = $1; }
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| OP6_O_A_O_A_O_A opnd ',' ea ',' opnd ',' ea ',' opnd ',' ea
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{ $$ = $1; }
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| OP6_O_O_A_O_O_A opnd ',' opnd ',' ea ',' opnd ',' opnd ',' ea
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{ $$ = $1; }
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| CASE_O_O_O opnd ',' opnd ',' opnd
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|
|
{ $$ = $1; }
|
||
|
|
;
|
||
|
|
|
||
|
|
opnd
|
||
|
|
: ea
|
||
|
|
| immediate
|
||
|
|
| REG { opnd[op_ind].mode = REG_MODE;
|
||
|
|
opnd[op_ind].reg = $1;
|
||
|
|
opnd[op_ind].index_reg = -1;
|
||
|
|
op_ind++;
|
||
|
|
}
|
||
|
|
;
|
||
|
|
|
||
|
|
ea
|
||
|
|
: eax { opnd[op_ind].index_reg = -1;
|
||
|
|
op_ind++;
|
||
|
|
}
|
||
|
|
| eax '[' REG ']' { opnd[op_ind].index_reg = $3;
|
||
|
|
op_ind++;
|
||
|
|
}
|
||
|
|
| immediate '[' REG ']'
|
||
|
|
{ opnd[op_ind-1].index_reg = $3;
|
||
|
|
}
|
||
|
|
;
|
||
|
|
eax
|
||
|
|
: expr { opnd[op_ind].exp = $1;
|
||
|
|
opnd[op_ind].mode = ABS;
|
||
|
|
RELOMOVE(opnd[op_ind].relo, relonami);
|
||
|
|
}
|
||
|
|
| '*' expr { opnd[op_ind].exp = $2;
|
||
|
|
opnd[op_ind].mode = ABS_DEF;
|
||
|
|
RELOMOVE(opnd[op_ind].relo, relonami);
|
||
|
|
}
|
||
|
|
| '(' REG ')' { opnd[op_ind].mode = REGDEF_MODE;
|
||
|
|
opnd[op_ind].reg = $2;
|
||
|
|
}
|
||
|
|
| '(' REG ')' '+' { opnd[op_ind].mode = AI_MODE;
|
||
|
|
opnd[op_ind].reg = $2;
|
||
|
|
}
|
||
|
|
| '*' '(' REG ')' '+'
|
||
|
|
{ opnd[op_ind].mode = AI_DEF_MODE;
|
||
|
|
opnd[op_ind].reg = $3;
|
||
|
|
}
|
||
|
|
| '-' '(' REG ')' { opnd[op_ind].mode = AD_MODE;
|
||
|
|
opnd[op_ind].reg = $3;
|
||
|
|
}
|
||
|
|
| expr '(' REG ')'
|
||
|
|
{ opnd[op_ind].exp = $1;
|
||
|
|
opnd[op_ind].mode = DISPLL_MODE;
|
||
|
|
opnd[op_ind].reg = $3;
|
||
|
|
RELOMOVE(opnd[op_ind].relo, relonami);
|
||
|
|
}
|
||
|
|
| '*' expr '(' REG ')'
|
||
|
|
{ opnd[op_ind].exp = $2;
|
||
|
|
opnd[op_ind].mode = DISPLL_DEF_MODE;
|
||
|
|
opnd[op_ind].reg = $4;
|
||
|
|
RELOMOVE(opnd[op_ind].relo, relonami);
|
||
|
|
}
|
||
|
|
;
|
||
|
|
|
||
|
|
immediate
|
||
|
|
: '$' expr { opnd[op_ind].mode = IMM;
|
||
|
|
opnd[op_ind].exp = $2;
|
||
|
|
opnd[op_ind].index_reg = -1;
|
||
|
|
RELOMOVE(opnd[op_ind].relo, relonami);
|
||
|
|
op_ind++;
|
||
|
|
}
|
||
|
|
;
|