mdw@git.distorted.org.uk Git - ssr/blob - StraySrc/Libraries/Sapphire/sail/sh/tree

   1 ;
   2 ; tree.sh
   3 ;
   4 ; Another attempt at symbol table management
   5 ;
   6 ; © 1995 Straylight
   7 ;
   8
   9 ;----- Overview -------------------------------------------------------------
  10 ;
  11 ; Functions provided:
  12 ;
  13 ;  tree_add
  14 ;  tree_find
  15 ;  str_cmp
  16
  17                 [       :LNOT::DEF:tree__dfn
  18                 GBLL    tree__dfn
  19
  20 ; --- tree_add ---
  21 ;
  22 ; On entry:     R0 == type number
  23 ;               R1 == address of name
  24 ;               R2 == size of user data
  25 ;
  26 ; On exit:      R0 == address of user data in new node
  27 ;               CS if node already exists, else CC
  28 ;               May return an error
  29 ;
  30 ; Use:          Adds a node into a symbol table tree.
  31
  32                 IMPORT  tree_add
  33
  34 ; --- tree_find ---
  35 ;
  36 ; On entry:     R0 == type number
  37 ;               R1 == pointer to the name
  38 ;
  39 ; On exit:      CS if the variable was found, and
  40 ;                 R0 == pointer to the variable block
  41 ;               else CC and
  42 ;                 R0 corrupted
  43 ;
  44 ; Use:          Tries to find a node with the given type and name in
  45 ;               the symbol tree.
  46
  47                 IMPORT  tree_find
  48
  49 ; --- str_cmp ---
  50 ;
  51 ; On entry:     R0 == pointer to string A
  52 ;               R1 == pointer to string B
  53 ;
  54 ; On exit:      Flags as appropriate
  55 ;
  56 ; Use:          Case-sensitively compares two strings.  You can use the
  57 ;               normal ARM condition codes after the compare, so you can
  58 ;               treat this fairly much like a normal CMP.
  59
  60                 IMPORT  str_cmp
  61
  62                 ]
  63
  64 ;----- That's all, folks ----------------------------------------------------
  65
  66                 END