1 files changed, 87 insertions, 0 deletions
diff --git a/src/liblzma/simple/sparc.c b/src/liblzma/simple/sparc.c
new file mode 100644
index 0000000..bad8492
--- /dev/null
+++ b/src/liblzma/simple/sparc.c
@@ -0,0 +1,87 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \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(void *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, const 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);
+}
+
+
+#ifdef HAVE_ENCODER_SPARC
+extern lzma_ret
+lzma_simple_sparc_encoder_init(lzma_next_coder *next,
+		const lzma_allocator *allocator,
+		const lzma_filter_info *filters)
+{
+	return sparc_coder_init(next, allocator, filters, true);
+}
+#endif
+
+
+#ifdef HAVE_DECODER_SPARC
+extern lzma_ret
+lzma_simple_sparc_decoder_init(lzma_next_coder *next,
+		const lzma_allocator *allocator,
+		const lzma_filter_info *filters)
+{
+	return sparc_coder_init(next, allocator, filters, false);
+}
+#endif