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- /*
- * (c) copyright 1990 by the Vrije Universiteit, Amsterdam, The Netherlands.
- * See the copyright notice in the ACK home directory, in the file "Copyright".
- */
- #define RCSID2 "$Id$"
- /*
- * VAX-11 machine dependent yacc declarations
- */
- /* operands are indicated with a letter combination:
- b - general operand of byte size
- w - general operand of word size
- l - general operand of long size
- u - general operand of > long size (immediate mode is not
- implemented for this size, and neither are immediate
- floating point encodings
- A - an operand of which the address is taken (so, no register
- or immediate mode)
- V - a bit-field operand (no immediate mode)
- Bb - byte offset branch
- Bw - word offset branch
- Bl - long offset branch
- Bx - branch, size of offset determined by instruction
- Be - extended conditional branch; the instruction may be replaced
- by a reverse-conditional branch over a branch or jump
- To reduce the number of terminals, some instructions that have operands of
- equal size are coded with an X instead of b, w, or l; these instructions
- have the size in the high order word of the valu field. This is needed
- because some yacc versions do not accept grammars with more than 127
- terminal symbols.
- */
- %token <y_word> REG
- %token <y_word> CASE_X_X_X
- %token <y_word> OP0
- %token <y_word> OP1_A OP1_Bx OP1_u OP1_Be
- %token <y_word> OP1_BX OP1_X
- %token <y_word> OP2_A_A OP2_A_l OP2_b_b OP2_b_l OP2_b_u OP2_b_w OP2_l_A
- OP2_l_Bb OP2_l_b OP2_l_l OP2_l_u OP2_l_w OP2_u_b OP2_u_l
- OP2_u_u OP2_u_w OP2_w_b OP2_w_l OP2_w_u OP2_w_w OP2_l_Be
- %token <y_word> OP3_b_b_b OP3_b_l_l OP3_b_u_u OP3_b_w_A OP3_l_V_Bb
- OP3_l_l_Bb OP3_l_l_l OP3_l_w_A OP3_u_u_u OP3_u_w_A
- OP3_w_A_A OP3_w_A_l OP3_w_w_w OP3_l_V_Be
- %token <y_word> OP4_A_l_w_A OP4_b_b_b_Bw OP4_l_b_V_l OP4_l_l_b_V
- OP4_l_l_l_Bw OP4_l_l_l_u OP4_l_u_l_l OP4_u_u_u_Bw
- OP4_w_A_A_A OP4_w_A_A_b OP4_w_A_w_A OP4_w_w_w_Bw
- %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
- %token <y_word> OP6_b_w_A_b_w_A OP6_l_l_l_l_l_l OP6_w_A_b_A_w_A
- OP6_w_A_w_A_w_A
- /* operand types:
- O - the b, w, l, A and V operands (they all fall into the same
- syntactic category)
- B - branch offsets (these do not result in an addressing mode
- byte)
- */
- %type <y_word> OP1_O OP1_B
- %type <y_word> OP2_O_O OP2_O_B
- %type <y_word> OP3_O_O_O OP3_O_O_B
- %type <y_word> OP4_O_O_O_O OP4_O_O_O_B
- %type <y_word> OP5_O_O_O_O_O
- %type <y_word> OP6_O_O_O_O_O_O
- %type <y_word> CASE_O_O_O
- %type <y_word> oper
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