diff options
author | mm <mm@FreeBSD.org> | 2010-05-10 06:59:50 +0000 |
---|---|---|
committer | mm <mm@FreeBSD.org> | 2010-05-10 06:59:50 +0000 |
commit | 5c358d45429b654efa9c8177ecd370a7965ec1a7 (patch) | |
tree | d2d916954c6a66a3168ee356b5f24da01c2017d6 /contrib/xz/src/liblzma/simple/arm.c | |
parent | 3e09decd1986826f54af1a47be97bb87c1220783 (diff) | |
parent | 1008b7c6744a190c5b15aaf8cab1054671e4c7c3 (diff) | |
download | FreeBSD-src-5c358d45429b654efa9c8177ecd370a7965ec1a7.zip FreeBSD-src-5c358d45429b654efa9c8177ecd370a7965ec1a7.tar.gz |
Import of liblzma, xz, xzdec, lzmainfo from vendor branch
Add support for xz and lzma to lesspipe.sh (xzless, lzless)
Bump __FreeBSD_version
Approved by: delphij (mentor)
MFC after: 2 weeks
Diffstat (limited to 'contrib/xz/src/liblzma/simple/arm.c')
-rw-r--r-- | contrib/xz/src/liblzma/simple/arm.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/contrib/xz/src/liblzma/simple/arm.c b/contrib/xz/src/liblzma/simple/arm.c new file mode 100644 index 0000000..8fcf643 --- /dev/null +++ b/contrib/xz/src/liblzma/simple/arm.c @@ -0,0 +1,69 @@ +/////////////////////////////////////////////////////////////////////////////// +// +/// \file arm.c +/// \brief Filter for ARM binaries +/// +// Authors: Igor Pavlov +// Lasse Collin +// +// This file has been put into the public domain. +// You can do whatever you want with this file. +// +/////////////////////////////////////////////////////////////////////////////// + +#include "simple_private.h" + + +static size_t +arm_code(lzma_simple *simple lzma_attribute((unused)), + uint32_t now_pos, bool is_encoder, + uint8_t *buffer, size_t size) +{ + size_t i; + for (i = 0; i + 4 <= size; i += 4) { + if (buffer[i + 3] == 0xEB) { + uint32_t src = (buffer[i + 2] << 16) + | (buffer[i + 1] << 8) + | (buffer[i + 0]); + src <<= 2; + + uint32_t dest; + if (is_encoder) + dest = now_pos + (uint32_t)(i) + 8 + src; + else + dest = src - (now_pos + (uint32_t)(i) + 8); + + dest >>= 2; + buffer[i + 2] = (dest >> 16); + buffer[i + 1] = (dest >> 8); + buffer[i + 0] = dest; + } + } + + return i; +} + + +static lzma_ret +arm_coder_init(lzma_next_coder *next, lzma_allocator *allocator, + const lzma_filter_info *filters, bool is_encoder) +{ + return lzma_simple_coder_init(next, allocator, filters, + &arm_code, 0, 4, 4, is_encoder); +} + + +extern lzma_ret +lzma_simple_arm_encoder_init(lzma_next_coder *next, lzma_allocator *allocator, + const lzma_filter_info *filters) +{ + return arm_coder_init(next, allocator, filters, true); +} + + +extern lzma_ret +lzma_simple_arm_decoder_init(lzma_next_coder *next, lzma_allocator *allocator, + const lzma_filter_info *filters) +{ + return arm_coder_init(next, allocator, filters, false); +} |