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Glenn managed to shrink .text by 5 more bytes.

This commit is contained in:
Michael Brown 2006-04-25 21:48:16 +00:00
parent fee8b91015
commit cfae86f6c8
1 changed files with 6 additions and 3 deletions
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9
src/core/malloc.c
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@ -66,19 +66,22 @@ static LIST_HEAD ( free_blocks );
*/
void * alloc_memblock ( size_t size, size_t align ) {
struct memory_block *block;
size_t align_mask;
size_t pre_size;
ssize_t post_size;
struct memory_block *pre;
struct memory_block *post;
/* Round up alignment and size to multiples of MIN_MEMBLOCK_SIZE */
align = ( align + MIN_MEMBLOCK_SIZE - 1 ) & ~( MIN_MEMBLOCK_SIZE - 1 );
/* Round up size to multiple of MIN_MEMBLOCK_SIZE and
* calculate alignment mask.
*/
size = ( size + MIN_MEMBLOCK_SIZE - 1 ) & ~( MIN_MEMBLOCK_SIZE - 1 );
align_mask = ( align - 1 ) | ( MIN_MEMBLOCK_SIZE - 1 );
DBG ( "Allocating %zx (aligned %zx)\n", size, align );
/* Search through blocks for the first one with enough space */
list_for_each_entry ( block, &free_blocks, list ) {
pre_size = ( - virt_to_phys ( block ) ) & ( align - 1 );
pre_size = ( - virt_to_phys ( block ) ) & align_mask;
post_size = block->size - pre_size - size;
if ( post_size >= 0 ) {
/* Split block into pre-block, block, and