cgg_cg.h 3.9 KB

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  1. /* $Header$ */
  2. /* offsets of interesting fields in EM-pattern */
  3. #define PO_HASH 0
  4. #define PO_NEXT 1
  5. #define PO_MATCH 3
  6. #define ILLHASH 0177777
  7. /* Commands for codegenerator, in low order 5 bits of byte */
  8. #define DO_NEXTEM 0
  9. #define DO_MATCH 1
  10. #define DO_XMATCH 2
  11. #define DO_XXMATCH 3
  12. #define DO_REMOVE 4
  13. #define DO_DEALLOCATE 5
  14. #define DO_REALLOCATE 6
  15. #define DO_ALLOCATE 7
  16. #define DO_MOVE 10
  17. #define DO_ERASE 11
  18. #define DO_TOKREPLACE 12
  19. #define DO_EMREPLACE 13
  20. #define DO_COST 14
  21. #define DO_RETURN 15
  22. #define DO_COERC 16
  23. #define DO_PRETURN 17
  24. #define DO_RREMOVE 18
  25. #define DO_INSTR 19
  26. #define DO_TEST 20
  27. #define DO_DLINE 21
  28. #define DO_SETCC 22
  29. #ifndef MAXATT
  30. #define MAXATT TOKENSIZE
  31. #endif
  32. typedef struct instance {
  33. short in_which;
  34. # define IN_COPY 1
  35. # define IN_MEMB 2
  36. # define IN_RIDENT 3
  37. # define IN_ALLOC 4
  38. # define IN_DESCR 5
  39. # define IN_S_DESCR 6
  40. # define IN_D_DESCR 7
  41. short in_info[MAXATT+1];
  42. } inst_t,*inst_p;
  43. typedef struct set {
  44. short set_size;
  45. short set_val[SETSIZE];
  46. } set_t,*set_p;
  47. typedef struct {
  48. short m_set1; /* number of tokenexpr in move: from */
  49. short m_expr1; /* optional expression */
  50. short m_set2; /* number of tokenexpr in move: to */
  51. short m_expr2; /* optional expression */
  52. short m_cindex; /* code index to really do it */
  53. } move_t, *move_p;
  54. typedef struct {
  55. short t_set; /* number of tokenexpr in test */
  56. short t_expr; /* optional expression */
  57. short t_cindex; /* code index to really do it */
  58. } test_t, *test_p;
  59. struct exprnode {
  60. short ex_operator;
  61. short ex_lnode;
  62. short ex_rnode;
  63. };
  64. typedef struct exprnode node_t;
  65. typedef struct exprnode *node_p;
  66. /*
  67. * contents of .ex_operator
  68. */
  69. #define EX_TOKFIELD 0
  70. #define EX_ARG 1
  71. #define EX_CON 2
  72. #define EX_ALLREG 3
  73. #define EX_SAMESIGN 4
  74. #define EX_SFIT 5
  75. #define EX_UFIT 6
  76. #define EX_ROM 7
  77. #define EX_NCPEQ 8
  78. #define EX_SCPEQ 9
  79. #define EX_RCPEQ 10
  80. #define EX_NCPNE 11
  81. #define EX_SCPNE 12
  82. #define EX_RCPNE 13
  83. #define EX_NCPGT 14
  84. #define EX_NCPGE 15
  85. #define EX_NCPLT 16
  86. #define EX_NCPLE 17
  87. #define EX_OR2 18
  88. #define EX_AND2 19
  89. #define EX_PLUS 20
  90. #define EX_CAT 21
  91. #define EX_MINUS 22
  92. #define EX_TIMES 23
  93. #define EX_DIVIDE 24
  94. #define EX_MOD 25
  95. #define EX_LSHIFT 26
  96. #define EX_RSHIFT 27
  97. #define EX_NOT 28
  98. #define EX_COMP 29
  99. #define EX_STRING 31
  100. #define EX_DEFINED 32
  101. #define EX_SUBREG 33
  102. #define EX_TOSTRING 34
  103. #define EX_UMINUS 35
  104. #define EX_REG 36
  105. #define EX_LOWW 37
  106. #define EX_HIGHW 38
  107. #define EX_INREG 39
  108. #define EX_REGVAR 40
  109. typedef struct { /* to stack coercions */
  110. short c1_texpno; /* token expression number */
  111. short c1_expr; /* boolean expression */
  112. short c1_prop; /* property of register needed */
  113. short c1_codep; /* code index */
  114. } c1_t,*c1_p;
  115. #ifdef MAXSPLIT
  116. typedef struct { /* splitting coercions */
  117. short c2_texpno; /* token expression number */
  118. short c2_expr; /* optional boolean expression */
  119. short c2_nsplit; /* split factor */
  120. short c2_repl[MAXSPLIT];/* replacement instances */
  121. short c2_codep; /* code index */
  122. } c2_t,*c2_p;
  123. #endif MAXSPLIT
  124. typedef struct { /* one to one coercions */
  125. short c3_texpno; /* token expression number */
  126. short c3_expr; /* boolean expression */
  127. short c3_prop; /* property of register needed */
  128. short c3_repl; /* replacement instance */
  129. short c3_codep; /* code index */
  130. } c3_t,*c3_p;
  131. #define getint(a,b) \
  132. if ((a=((*(b)++)&BMASK)) >= 128) {\
  133. a = ((a-128)<<BSHIFT) | (*(b)++&BMASK); \
  134. }