diff options
Diffstat (limited to 'bcheck.c')
| -rw-r--r-- | bcheck.c | 20 |
1 files changed, 20 insertions, 0 deletions
@@ -21,7 +21,9 @@ #include <stdio.h> #include <stdarg.h> #include <string.h> +#ifndef __FreeBSD__ #include <malloc.h> +#endif //#define BOUND_DEBUG @@ -32,6 +34,14 @@ /* use malloc hooks. Currently the code cannot be reliable if no hooks */ #define CONFIG_TCC_MALLOC_HOOKS +#define HAVE_MEMALIGN + +#ifdef __FreeBSD__ +#warning Bound checking not fully supported on FreeBSD +#undef CONFIG_TCC_MALLOC_HOOKS +#undef HAVE_MEMALIGN +#endif + #define BOUND_T1_BITS 13 #define BOUND_T2_BITS 11 #define BOUND_T3_BITS (32 - BOUND_T1_BITS - BOUND_T2_BITS) @@ -713,10 +723,20 @@ void *__bound_memalign(size_t size, size_t align, const void *caller) restore_malloc_hooks(); +#ifndef HAVE_MEMALIGN + if (align > 4) { + /* XXX: handle it ? */ + ptr = NULL; + } else { + /* we suppose that malloc aligns to at least four bytes */ + ptr = malloc(size + 1); + } +#else /* we allocate one more byte to ensure the regions will be separated by at least one byte. With the glibc malloc, it may be in fact not necessary */ ptr = memalign(size + 1, align); +#endif install_malloc_hooks(); |