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

   1 ;
   2 ; mem.sh
   3 ;
   4 ; Generic memory allocation for TermScript
   5 ;
   6 ; © 1995 Straylight
   7 ;
   8
   9 ;----- Overview -------------------------------------------------------------
  10 ;
  11 ; Functions provided:
  12 ;
  13 ;  mem_alloc
  14 ;  mem_free
  15 ;  mem_realloc
  16
  17                 [       :LNOT::DEF:mem__dfn
  18                 GBLL    mem__dfn
  19
  20 ; --- mem_alloc ---
  21 ;
  22 ; On entry:     R0 == size of block to allocate
  23 ;
  24 ; On exit:      R0 == pointer to anchor for that block
  25 ;               May return an error
  26 ;
  27 ; Use:          Tries to allocate a block of memory, and returns a pointer
  28 ;               to the anchor for that block. All very unusual really,
  29 ;               but we blame Wimp_Extension which allocates anchors for
  30 ;               you in an utterley horrible way.
  31
  32
  33                 IMPORT  mem_alloc
  34
  35 ; --- mem_free ---
  36 ;
  37 ; On entry:     R0 == anchor of the block to free
  38 ;
  39 ; On exit:      --
  40 ;
  41 ; Use:          Frees the block.
  42
  43                 IMPORT  mem_free
  44
  45 ; --- mem_realloc ---
  46 ;
  47 ; On entry:     R0 == pointer to block anchor
  48 ;               R1 == new size requested
  49 ;
  50 ; On exit:      May return an error
  51 ;
  52 ; Use:          Resizes a block
  53
  54                 IMPORT  mem_realloc
  55
  56                 ]
  57
  58 ;----- That's all, folks ----------------------------------------------------
  59
  60                 END