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| author | Johnathan Corgan <johnathan@corganlabs.com> | 2013-03-27 20:41:40 -0700 |
|---|---|---|
| committer | Johnathan Corgan <johnathan@corganlabs.com> | 2013-03-27 20:41:40 -0700 |
| commit | 2caaabf8e1dd771174fd42e51c8c8090864638e6 (patch) | |
| tree | e58fe2bc53120acfd11aa6687fe5fa0aaa58ca71 /gnuradio-runtime/lib/malloc16.c | |
| parent | 40ab0030dbe821c9ed475a0b73898040f4af581c (diff) | |
| parent | d7cde125dc3661a62e1013a4a017f0f1efa46e6e (diff) | |
Merge branch 'runtime-3.7' into next
Diffstat (limited to 'gnuradio-runtime/lib/malloc16.c')
| -rw-r--r-- | gnuradio-runtime/lib/malloc16.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/gnuradio-runtime/lib/malloc16.c b/gnuradio-runtime/lib/malloc16.c new file mode 100644 index 0000000000..2cc6135e77 --- /dev/null +++ b/gnuradio-runtime/lib/malloc16.c @@ -0,0 +1,46 @@ +/* Wrapper functions for malloc/free that force 16-byte alignment + * See http://perso.club-internet.fr/matmac/sourcesc.htm + + * Copyright 2001 Phil Karn, KA9Q + * May be used under the terms of the GNU Public License (GPL) + */ + +#include "malloc16.h" +#include <string.h> + +void *malloc16Align(int size){ + void *p; + void **p1; + + if((p = malloc(size+31)) == NULL) + return NULL; + + /* Round up to next 16-byte boundary */ + p1 = (void **)(((long)p + 31) & (~15)); + + /* Stash actual start of block just before ptr we return */ + p1[-1] = p; + + /* Return 16-byte aligned address */ + return (void *)p1; +} + +void *calloc16Align(size_t nmemb,size_t size){ + int nbytes; + void *p; + + nbytes = nmemb*size; + if((p = malloc16Align(nbytes)) == NULL) + return NULL; + + memset(p,0,nbytes); + return p; +} + +void free16Align(void *p){ + + if(p != NULL){ + /* Retrieve pointer to actual start of block and free it */ + free(((void **)p)[-1]); + } +} |