66 lines
2.5 KiB
C
66 lines
2.5 KiB
C
/*
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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 RCSID2 "$Header$"
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/*
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* VAX-11 machine dependent yacc declarations
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*/
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/* operands are indicated with a letter combination:
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b - general operand of byte size
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w - general operand of word size
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l - general operand of long size
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u - general operand of > long size (immediate mode is not
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implemented for this size, and neither are immediate
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floating point encodings
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A - an operand of which the address is taken (so, no register
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or immediate mode)
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V - a bit-field operand (no immediate mode)
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Bb - byte offset branch
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Bw - word offset branch
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Bl - long offset branch
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Bx - branch, size of offset determined by instruction
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Be - extended conditional branch; the instruction may be replaced
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by a reverse-conditional branch over a branch or jump
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To reduce the number of terminals, some instructions that have operands of
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equal size are coded with an X instead of b, w, or l; these instructions
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have the size in the high order word of the valu field. This is needed
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because some yacc versions do not accept grammars with more than 127
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terminal symbols.
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*/
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%token <y_word> REG
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%token <y_word> CASE_X_X_X
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%token <y_word> OP0
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%token <y_word> OP1_A, OP1_Bx, OP1_u, OP1_Be
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%token <y_word> OP1_BX, OP1_X
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%token <y_word> OP2_A_A, OP2_A_l, OP2_b_b, OP2_b_l, OP2_b_u, OP2_b_w, OP2_l_A,
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OP2_l_Bb, OP2_l_b, OP2_l_l, OP2_l_u, OP2_l_w, OP2_u_b, OP2_u_l,
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OP2_u_u, OP2_u_w, OP2_w_b, OP2_w_l, OP2_w_u, OP2_w_w, OP2_l_Be
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%token <y_word> OP3_b_b_b, OP3_b_l_l, OP3_b_u_u, OP3_b_w_A, OP3_l_V_Bb,
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OP3_l_l_Bb, OP3_l_l_l, OP3_l_w_A, OP3_u_u_u, OP3_u_w_A,
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OP3_w_A_A, OP3_w_A_l, OP3_w_w_w, OP3_l_V_Be
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%token <y_word> OP4_A_l_w_A, OP4_b_b_b_Bw, OP4_l_b_V_l, OP4_l_l_b_V,
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OP4_l_l_l_Bw, OP4_l_l_l_u, OP4_l_u_l_l, OP4_u_u_u_Bw,
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OP4_w_A_A_A, OP4_w_A_A_b, OP4_w_A_w_A, OP4_w_w_w_Bw
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%token <y_word> OP5_u_b_u_l_u, OP5_u_w_u_l_u, OP5_w_A_A_w_A, OP5_w_A_b_w_A
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%token <y_word> OP6_b_w_A_b_w_A, OP6_l_l_l_l_l_l, OP6_w_A_b_A_w_A,
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OP6_w_A_w_A_w_A
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/* operand types:
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O - the b, w, l, A and V operands (they all fall into the same
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syntactic category)
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B - branch offsets (these do not result in an addressing mode
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byte)
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*/
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%type <y_word> OP1_O, OP1_B
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%type <y_word> OP2_O_O, OP2_O_B
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%type <y_word> OP3_O_O_O, OP3_O_O_B
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%type <y_word> OP4_O_O_O_O, OP4_O_O_O_B
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%type <y_word> OP5_O_O_O_O_O
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%type <y_word> OP6_O_O_O_O_O_O
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%type <y_word> CASE_O_O_O
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%type <y_word> oper
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