cg_pattern.h 4.0 KB

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  1. /* offsets of interesting fields in EM-pattern */
  2. #define PO_HASH 0
  3. #define PO_NEXT 1
  4. #define PO_MATCH 3
  5. #define ILLHASH 0177777
  6. /* Escapes in printstrings */
  7. #define PR_TOK '\001'
  8. #define PR_TOKFLD '\002'
  9. #define PR_EMINT '\003'
  10. #define PR_EMSTR '\004'
  11. #define PR_ALLREG '\005'
  12. #define PR_SUBREG '\006'
  13. /*
  14. * In case this list gets longer remember to keep out printable nonprintables
  15. * like \t \n \r and the like.
  16. */
  17. /* Commands for codegenerator, in low order 5 bits of byte */
  18. #define DO_NEXTEM 0
  19. #define DO_MATCH 1
  20. #define DO_XMATCH 2
  21. #define DO_XXMATCH 3
  22. #define DO_REMOVE 4
  23. #define DO_DEALLOCATE 5
  24. #define DO_REALLOCATE 6
  25. #define DO_ALLOCATE 7
  26. #define DO_LOUTPUT 8
  27. #define DO_ROUTPUT 9
  28. #define DO_MOVE 10
  29. #define DO_ERASE 11
  30. #define DO_TOKREPLACE 12
  31. #define DO_EMREPLACE 13
  32. #define DO_COST 14
  33. #define DO_RETURN 15
  34. #define DO_COERC 16
  35. #define DO_PRETURN 17
  36. #define DO_RREMOVE 18
  37. typedef struct instance {
  38. int in_which;
  39. # define IN_COPY 1
  40. # define IN_RIDENT 2
  41. # define IN_ALLOC 3
  42. # define IN_DESCR 4
  43. # define IN_REGVAR 5
  44. int in_info[TOKENSIZE+1];
  45. } inst_t,*inst_p;
  46. typedef struct {
  47. int c_size; /* index in enode-table */
  48. int c_time; /* dito */
  49. } cost_t,*cost_p;
  50. typedef struct {
  51. int m_set1; /* number of tokenexpr in move: from */
  52. int m_expr1; /* optional expression */
  53. int m_set2; /* number of tokenexpr in move: to */
  54. int m_expr2; /* optional expression */
  55. int m_cindex; /* code index to really do it */
  56. cost_t m_cost; /* associated cost */
  57. } move_t, *move_p;
  58. typedef struct {
  59. int set_size;
  60. short set_val[SETSIZE];
  61. } set_t,*set_p;
  62. struct exprnode {
  63. short ex_operator;
  64. short ex_lnode;
  65. short ex_rnode;
  66. };
  67. typedef struct exprnode node_t;
  68. typedef struct exprnode *node_p;
  69. typedef struct { /* to stack coercions */
  70. int c1_texpno; /* token expression number */
  71. int c1_expr; /* boolean expression */
  72. int c1_prop; /* property of register needed */
  73. int c1_codep; /* code index */
  74. cost_t c1_cost; /* cost involved */
  75. } c1_t,*c1_p;
  76. #ifdef MAXSPLIT
  77. typedef struct { /* splitting coercions */
  78. int c2_texpno; /* token expression number */
  79. int c2_nsplit; /* split factor */
  80. int c2_repl[MAXSPLIT]; /* replacement instances */
  81. int c2_codep; /* code index */
  82. } c2_t,*c2_p;
  83. #endif MAXSPLIT
  84. typedef struct { /* one to one coercions */
  85. int c3_texpno; /* token expression number */
  86. int c3_prop; /* property of register needed */
  87. int c3_repl; /* replacement instance */
  88. int c3_codep; /* code index */
  89. } c3_t,*c3_p;
  90. /*
  91. * contents of .ex_operator
  92. */
  93. #define EX_TOKFIELD 0
  94. #define EX_ARG 1
  95. #define EX_CON 2
  96. #define EX_ALLREG 3
  97. #define EX_SAMESIGN 4
  98. #define EX_SFIT 5
  99. #define EX_UFIT 6
  100. #define EX_ROM 7
  101. #define EX_NCPEQ 8
  102. #define EX_SCPEQ 9
  103. #define EX_RCPEQ 10
  104. #define EX_NCPNE 11
  105. #define EX_SCPNE 12
  106. #define EX_RCPNE 13
  107. #define EX_NCPGT 14
  108. #define EX_NCPGE 15
  109. #define EX_NCPLT 16
  110. #define EX_NCPLE 17
  111. #define EX_OR2 18
  112. #define EX_AND2 19
  113. #define EX_PLUS 20
  114. #define EX_CAT 21
  115. #define EX_MINUS 22
  116. #define EX_TIMES 23
  117. #define EX_DIVIDE 24
  118. #define EX_MOD 25
  119. #define EX_LSHIFT 26
  120. #define EX_RSHIFT 27
  121. #define EX_NOT 28
  122. #define EX_COMP 29
  123. #define EX_COST 30
  124. #define EX_STRING 31
  125. #define EX_DEFINED 32
  126. #define EX_SUBREG 33
  127. #define EX_TOSTRING 34
  128. #define EX_UMINUS 35
  129. #define EX_REG 36
  130. #define EX_LOWW 37
  131. #define EX_HIGHW 38
  132. #define EX_INREG 39
  133. #define EX_REGVAR 40
  134. #define getint(a,b) \
  135. if ((a=((*(b)++)&BMASK)) >= 128) {\
  136. a = ((a-128)<<BSHIFT) | (*(b)++&BMASK); \
  137. }