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Changed the way, used blocks are managed

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git-svn-id: svn://svn.cc65.org/cc65/trunk@3340 b7a2c559-68d2-44c3-8de9-860c34a00d81
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cuz
2004-12-19 23:09:38 +00:00
parent 49d1a47269
commit e55a4bcfd4
5 changed files with 83 additions and 41 deletions
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18
libsrc/common/malloc.s
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@@ -309,17 +309,27 @@ SliceBlock:
stx ptr2
sta ptr2+1
; Fill the size into the admin space of the block and return the user pointer
; Fill the size and start address into the admin space of the block
; (struct usedblock) and return the user pointer
FillSizeAndRet:
ldy #freeblock::size ; *p = size;
lda ptr1 ; Low byte of block size
ldy #usedblock::size ; p->size = size;
lda ptr1 ; Low byte of block size
sta (ptr2),y
iny ; Points to freeblock::size+1
iny ; Points to freeblock::size+1
lda ptr1+1
sta (ptr2),y
RetUserPtr:
ldy #usedblock::start ; p->start = p
lda ptr2
sta (ptr2),y
iny
lda ptr2+1
sta (ptr2),y
; Return the user pointer, which points behind the struct usedblock
lda ptr2 ; return ++p;
ldx ptr2+1
add #HEAP_ADMIN_SPACE