From 5262a872f308b3b584c97d621992fb3877e392b8 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Fri, 19 Apr 2024 05:10:08 +0200
Subject: Adding upstream version 5.6.1+really5.4.5.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/liblzma/simple/arm.c | 75 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 src/liblzma/simple/arm.c

(limited to 'src/liblzma/simple/arm.c')

diff --git a/src/liblzma/simple/arm.c b/src/liblzma/simple/arm.c
new file mode 100644
index 0000000..6e53970
--- /dev/null
+++ b/src/liblzma/simple/arm.c
@@ -0,0 +1,75 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \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(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 + 3] == 0xEB) {
+			uint32_t src = ((uint32_t)(buffer[i + 2]) << 16)
+					| ((uint32_t)(buffer[i + 1]) << 8)
+					| (uint32_t)(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, const 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);
+}
+
+
+#ifdef HAVE_ENCODER_ARM
+extern lzma_ret
+lzma_simple_arm_encoder_init(lzma_next_coder *next,
+		const lzma_allocator *allocator,
+		const lzma_filter_info *filters)
+{
+	return arm_coder_init(next, allocator, filters, true);
+}
+#endif
+
+
+#ifdef HAVE_DECODER_ARM
+extern lzma_ret
+lzma_simple_arm_decoder_init(lzma_next_coder *next,
+		const lzma_allocator *allocator,
+		const lzma_filter_info *filters)
+{
+	return arm_coder_init(next, allocator, filters, false);
+}
+#endif
-- 
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