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author | Michael Brown | 2007-01-12 00:19:31 +0100 |
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committer | Michael Brown | 2007-01-12 00:19:31 +0100 |
commit | 79a399c05ab3ee9575c964727c9aea59ee65dae6 (patch) | |
tree | 35a3c9ea045eeb11916d7e2ef0ac931263c42fc1 /src/include/alloca.h | |
parent | Populate multiboot information structure before calling OS. (diff) | |
download | ipxe-79a399c05ab3ee9575c964727c9aea59ee65dae6.tar.gz ipxe-79a399c05ab3ee9575c964727c9aea59ee65dae6.tar.xz ipxe-79a399c05ab3ee9575c964727c9aea59ee65dae6.zip |
alloca() can be useful in some (limited) circumstances.
Diffstat (limited to 'src/include/alloca.h')
-rw-r--r-- | src/include/alloca.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/include/alloca.h b/src/include/alloca.h new file mode 100644 index 00000000..08398fb3 --- /dev/null +++ b/src/include/alloca.h @@ -0,0 +1,25 @@ +#ifndef _ALLOCA_H +#define _ALLOCA_H + +/** + * @file + * + * Temporary memory allocation + * + */ + +#include <stdint.h> + +/** + * Allocate temporary memory from the stack + * + * @v size Size to allocate + * @ret ptr Allocated memory + * + * This memory will be freed automatically when the containing + * function returns. There are several caveats regarding use of + * alloca(); use it only if you already know what they are. + */ +#define alloca(size) __builtin_alloca ( size ) + +#endif /* _ALLOCA_H */ |