cgg_cg.h 4.3 KB

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  1. /*
  2. * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
  3. * See the copyright notice in the ACK home directory, in the file "Copyright".
  4. */
  5. /* $Id$ */
  6. #ifndef H_CGG_CG_H
  7. #define H_CGG_CG_H
  8. /* offsets of interesting fields in EM-pattern */
  9. #define PO_HASH 0
  10. #define PO_NEXT 1
  11. #define PO_MATCH 3
  12. #define ILLHASH 0177777
  13. /* Commands for codegenerator, in low order 5 bits of byte */
  14. #define DO_NEXTEM 0
  15. #define DO_MATCH 1
  16. #define DO_XMATCH 2
  17. #define DO_XXMATCH 3
  18. #define DO_REMOVE 4
  19. #define DO_DEALLOCATE 5
  20. #define DO_REALLOCATE 6
  21. #define DO_ALLOCATE 7
  22. #define DO_MOVE 10
  23. #define DO_ERASE 11
  24. #define DO_TOKREPLACE 12
  25. #define DO_EMREPLACE 13
  26. #define DO_COST 14
  27. #define DO_RETURN 15
  28. #define DO_COERC 16
  29. #define DO_PRETURN 17
  30. #define DO_RREMOVE 18
  31. #define DO_INSTR 19
  32. #define DO_TEST 20
  33. #define DO_DLINE 21
  34. #define DO_SETCC 22
  35. #define DO_TOSTACK 23
  36. #define DO_KILLREG 24
  37. #define DO_LABDEF 25
  38. #ifndef MAXATT
  39. #define MAXATT TOKENSIZE
  40. #endif
  41. typedef struct instance {
  42. short in_which;
  43. # define IN_COPY 1
  44. # define IN_MEMB 2
  45. # define IN_RIDENT 3
  46. # define IN_ALLOC 4
  47. # define IN_DESCR 5
  48. # define IN_S_DESCR 6
  49. # define IN_D_DESCR 7
  50. short in_info[MAXATT+1];
  51. } inst_t,*inst_p;
  52. typedef struct set {
  53. short set_size;
  54. short set_val[SETSIZE];
  55. } set_t,*set_p;
  56. typedef struct {
  57. short m_set1; /* number of tokenexpr in move: from */
  58. short m_expr1; /* optional expression */
  59. short m_set2; /* number of tokenexpr in move: to */
  60. short m_expr2; /* optional expression */
  61. short m_cindex; /* code index to really do it */
  62. } move_t, *move_p;
  63. typedef struct {
  64. short t_set; /* number of tokenexpr in test */
  65. short t_expr; /* optional expression */
  66. short t_cindex; /* code index to really do it */
  67. } test_t, *test_p;
  68. struct exprnode {
  69. short ex_operator;
  70. short ex_lnode;
  71. short ex_rnode;
  72. };
  73. typedef struct exprnode node_t;
  74. typedef struct exprnode *node_p;
  75. /*
  76. * contents of .ex_operator
  77. */
  78. #define EX_TOKFIELD 0
  79. #define EX_ARG 1
  80. #define EX_CON 2
  81. #define EX_ALLREG 3
  82. #define EX_SAMESIGN 4
  83. #define EX_SFIT 5
  84. #define EX_UFIT 6
  85. #define EX_ROM 7
  86. #define EX_NCPEQ 8
  87. #define EX_SCPEQ 9
  88. #define EX_RCPEQ 10
  89. #define EX_NCPNE 11
  90. #define EX_SCPNE 12
  91. #define EX_RCPNE 13
  92. #define EX_NCPGT 14
  93. #define EX_NCPGE 15
  94. #define EX_NCPLT 16
  95. #define EX_NCPLE 17
  96. #define EX_OR2 18
  97. #define EX_AND2 19
  98. #define EX_PLUS 20
  99. #define EX_CAT 21
  100. #define EX_MINUS 22
  101. #define EX_TIMES 23
  102. #define EX_DIVIDE 24
  103. #define EX_MOD 25
  104. #define EX_LSHIFT 26
  105. #define EX_RSHIFT 27
  106. #define EX_NOT 28
  107. #define EX_COMP 29
  108. #define EX_STRING 31
  109. #define EX_DEFINED 32
  110. #define EX_SUBREG 33
  111. #define EX_TOSTRING 34
  112. #define EX_UMINUS 35
  113. #define EX_REG 36
  114. #define EX_LOWW 37
  115. #define EX_HIGHW 38
  116. #define EX_INREG 39
  117. #define EX_REGVAR 40
  118. #define EX_OR 41
  119. #define EX_XOR 42
  120. #define EX_AND 43
  121. #define EX_ISROM 44
  122. #define EX_TOPELTSIZE 45
  123. #define EX_FALLTHROUGH 46
  124. typedef struct { /* to stack coercions */
  125. short c1_texpno; /* token expression number */
  126. short c1_expr; /* boolean expression */
  127. short c1_prop; /* property of register needed */
  128. short c1_codep; /* code index */
  129. } c1_t,*c1_p;
  130. #ifdef MAXSPLIT
  131. typedef struct { /* splitting coercions */
  132. short c2_texpno; /* token expression number */
  133. short c2_expr; /* optional boolean expression */
  134. short c2_nsplit; /* split factor */
  135. short c2_repl[MAXSPLIT];/* replacement instances */
  136. short c2_codep; /* code index */
  137. } c2_t,*c2_p;
  138. #endif /* MAXSPLIT */
  139. typedef struct { /* one to one coercions */
  140. short c3_texpno; /* token expression number */
  141. short c3_expr; /* boolean expression */
  142. short c3_prop; /* property of register needed */
  143. short c3_repl; /* replacement instance */
  144. short c3_codep; /* code index */
  145. } c3_t,*c3_p;
  146. #define getint(a,b) \
  147. if ((a=((*(b)++)&BMASK)) >= 128) {\
  148. a = ((a-128)<<BSHIFT) | (*(b)++&BMASK); \
  149. }
  150. #endif /* H_CGG_CG_H */