diff options
Diffstat (limited to 'Build/source/extra/xz-4.999.9beta/src/liblzma/simple/sparc.c')
-rw-r--r-- | Build/source/extra/xz-4.999.9beta/src/liblzma/simple/sparc.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/Build/source/extra/xz-4.999.9beta/src/liblzma/simple/sparc.c b/Build/source/extra/xz-4.999.9beta/src/liblzma/simple/sparc.c new file mode 100644 index 00000000000..808a59aaac7 --- /dev/null +++ b/Build/source/extra/xz-4.999.9beta/src/liblzma/simple/sparc.c @@ -0,0 +1,81 @@ +/////////////////////////////////////////////////////////////////////////////// +// +/// \file sparc.c +/// \brief Filter for SPARC 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 +sparc_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] == 0x40 && (buffer[i + 1] & 0xC0) == 0x00) + || (buffer[i] == 0x7F + && (buffer[i + 1] & 0xC0) == 0xC0)) { + + uint32_t src = ((uint32_t)buffer[i + 0] << 24) + | ((uint32_t)buffer[i + 1] << 16) + | ((uint32_t)buffer[i + 2] << 8) + | ((uint32_t)buffer[i + 3]); + + src <<= 2; + + uint32_t dest; + if (is_encoder) + dest = now_pos + (uint32_t)(i) + src; + else + dest = src - (now_pos + (uint32_t)(i)); + + dest >>= 2; + + dest = (((0 - ((dest >> 22) & 1)) << 22) & 0x3FFFFFFF) + | (dest & 0x3FFFFF) + | 0x40000000; + + buffer[i + 0] = (uint8_t)(dest >> 24); + buffer[i + 1] = (uint8_t)(dest >> 16); + buffer[i + 2] = (uint8_t)(dest >> 8); + buffer[i + 3] = (uint8_t)(dest); + } + } + + return i; +} + + +static lzma_ret +sparc_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, + &sparc_code, 0, 4, 4, is_encoder); +} + + +extern lzma_ret +lzma_simple_sparc_encoder_init(lzma_next_coder *next, + lzma_allocator *allocator, const lzma_filter_info *filters) +{ + return sparc_coder_init(next, allocator, filters, true); +} + + +extern lzma_ret +lzma_simple_sparc_decoder_init(lzma_next_coder *next, + lzma_allocator *allocator, const lzma_filter_info *filters) +{ + return sparc_coder_init(next, allocator, filters, false); +} |