711 lines
		
	
	
		
			17 KiB
		
	
	
	
		
			Diff
		
	
	
	
	
	
			
		
		
	
	
			711 lines
		
	
	
		
			17 KiB
		
	
	
	
		
			Diff
		
	
	
	
	
	
--- a/arch/arm/boot/compressed/Makefile
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+++ b/arch/arm/boot/compressed/Makefile
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@@ -63,7 +63,7 @@ endif
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 SEDFLAGS	= s/TEXT_START/$(ZTEXTADDR)/;s/BSS_START/$(ZBSSADDR)/
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-targets       := vmlinux vmlinux.lds piggy.gz piggy.o font.o font.c \
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+targets       := vmlinux vmlinux.lds piggy.lzma piggy.o font.o font.c \
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 		 head.o misc.o $(OBJS)
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 ifeq ($(CONFIG_FUNCTION_TRACER),y)
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@@ -96,10 +96,10 @@ $(obj)/vmlinux: $(obj)/vmlinux.lds $(obj
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 	$(call if_changed,ld)
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 	@:
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-$(obj)/piggy.gz: $(obj)/../Image FORCE
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-	$(call if_changed,gzip)
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+$(obj)/piggy.lzma: $(obj)/../Image FORCE
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+	$(call if_changed,lzma)
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-$(obj)/piggy.o:  $(obj)/piggy.gz FORCE
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+$(obj)/piggy.o:  $(obj)/piggy.lzma FORCE
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 CFLAGS_font.o := -Dstatic=
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--- a/arch/arm/boot/compressed/misc.c
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+++ b/arch/arm/boot/compressed/misc.c
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@@ -186,36 +186,10 @@ static inline __ptr_t memcpy(__ptr_t __d
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 	return __dest;
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 }
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-/*
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- * gzip delarations
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- */
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-#define OF(args)  args
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-#define STATIC static
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-
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-typedef unsigned char  uch;
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-typedef unsigned short ush;
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-typedef unsigned long  ulg;
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-
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-#define WSIZE 0x8000		/* Window size must be at least 32k, */
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+#define WSIZE 0x20000		/* Window size must be at least 128k, */
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 				/* and a power of two */
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-static uch *inbuf;		/* input buffer */
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-static uch window[WSIZE];	/* Sliding window buffer */
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-
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-static unsigned insize;		/* valid bytes in inbuf */
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-static unsigned inptr;		/* index of next byte to be processed in inbuf */
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-static unsigned outcnt;		/* bytes in output buffer */
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-
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-/* gzip flag byte */
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-#define ASCII_FLAG   0x01 /* bit 0 set: file probably ascii text */
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-#define CONTINUATION 0x02 /* bit 1 set: continuation of multi-part gzip file */
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-#define EXTRA_FIELD  0x04 /* bit 2 set: extra field present */
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-#define ORIG_NAME    0x08 /* bit 3 set: original file name present */
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-#define COMMENT      0x10 /* bit 4 set: file comment present */
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-#define ENCRYPTED    0x20 /* bit 5 set: file is encrypted */
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-#define RESERVED     0xC0 /* bit 6,7:   reserved */
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-
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-#define get_byte()  (inptr < insize ? inbuf[inptr++] : fill_inbuf())
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+static u8 window[WSIZE];	/* Sliding window buffer */
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 /* Diagnostic functions */
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 #ifdef DEBUG
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@@ -234,24 +208,21 @@ static unsigned outcnt;		/* bytes in out
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 #  define Tracecv(c,x)
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 #endif
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-static int  fill_inbuf(void);
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-static void flush_window(void);
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 static void error(char *m);
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 extern char input_data[];
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 extern char input_data_end[];
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-static uch *output_data;
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-static ulg output_ptr;
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-static ulg bytes_out;
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+static unsigned long output_ptr;
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+static unsigned long bytes_out;
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 static void error(char *m);
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 static void putstr(const char *);
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 extern int end;
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-static ulg free_mem_ptr;
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-static ulg free_mem_end_ptr;
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+static unsigned long free_mem_ptr;
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+static unsigned long free_mem_end_ptr;
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 #ifdef STANDALONE_DEBUG
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 #define NO_INFLATE_MALLOC
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@@ -259,50 +230,10 @@ static ulg free_mem_end_ptr;
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 #define ARCH_HAS_DECOMP_WDOG
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-#include "../../../../lib/inflate.c"
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-
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-/* ===========================================================================
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- * Fill the input buffer. This is called only when the buffer is empty
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- * and at least one byte is really needed.
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- */
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-int fill_inbuf(void)
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-{
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-	if (insize != 0)
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-		error("ran out of input data");
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-
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-	inbuf = input_data;
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-	insize = &input_data_end[0] - &input_data[0];
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-
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-	inptr = 1;
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-	return inbuf[0];
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-}
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-
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-/* ===========================================================================
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- * Write the output window window[0..outcnt-1] and update crc and bytes_out.
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- * (Used for the decompressed data only.)
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- */
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-void flush_window(void)
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-{
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-	ulg c = crc;
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-	unsigned n;
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-	uch *in, *out, ch;
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-
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-	in = window;
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-	out = &output_data[output_ptr];
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-	for (n = 0; n < outcnt; n++) {
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-		ch = *out++ = *in++;
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-		c = crc_32_tab[((int)c ^ ch) & 0xff] ^ (c >> 8);
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-	}
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-	crc = c;
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-	bytes_out += (ulg)outcnt;
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-	output_ptr += (ulg)outcnt;
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-	outcnt = 0;
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-	putstr(".");
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-}
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-
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 #ifndef arch_error
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 #define arch_error(x)
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 #endif
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+#include "unlzma.c"
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 static void error(char *x)
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 {
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@@ -317,20 +248,16 @@ static void error(char *x)
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 #ifndef STANDALONE_DEBUG
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-ulg
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-decompress_kernel(ulg output_start, ulg free_mem_ptr_p, ulg free_mem_ptr_end_p,
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+unsigned long
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+decompress_kernel(unsigned long output_start, unsigned long free_mem_ptr_p, unsigned long free_mem_ptr_end_p,
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 		  int arch_id)
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 {
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-	output_data		= (uch *)output_start;	/* Points to kernel start */
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-	free_mem_ptr		= free_mem_ptr_p;
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-	free_mem_end_ptr	= free_mem_ptr_end_p;
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 	__machine_arch_type	= arch_id;
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 	arch_decomp_setup();
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-	makecrc();
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 	putstr("Uncompressing Linux...");
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-	gunzip();
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+	output_ptr += unlzma((u8 *) output_start, input_data, window);
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 	putstr(" done, booting the kernel.\n");
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 	return output_ptr;
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 }
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@@ -340,11 +267,8 @@ char output_buffer[1500*1024];
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 int main()
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 {
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-	output_data = output_buffer;
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-
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-	makecrc();
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 	putstr("Uncompressing Linux...");
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-	gunzip();
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+	unlzma((u8 *) output_buffer, input_data, window);
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 	putstr("done.\n");
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 	return 0;
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 }
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--- a/arch/arm/boot/compressed/piggy.S
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+++ b/arch/arm/boot/compressed/piggy.S
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@@ -1,6 +1,6 @@
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 	.section .piggydata,#alloc
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 	.globl	input_data
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 input_data:
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-	.incbin	"arch/arm/boot/compressed/piggy.gz"
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+	.incbin	"arch/arm/boot/compressed/piggy.lzma"
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 	.globl	input_data_end
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 input_data_end:
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--- /dev/null
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+++ b/arch/arm/boot/compressed/unlzma.c
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@@ -0,0 +1,429 @@
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+/*
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+ * Copyright (c) 2009  Felix Fietkau <nbd@openwrt.org>
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+ *
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+ * This program is free software; you can redistribute it and/or
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+ * modify it under the terms of the GNU General Public License
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+ * as published by the Free Software Foundation; either version 2,
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+ * or (at your option) any later version.
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+ *
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+ * This program is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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+ * GNU General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU General Public License
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+ * along with this program; if not, write to the Free Software
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+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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+ *
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+ * uncompress.c
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+ */
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+
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+#include <linux/types.h>
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+#include <asm/byteorder.h>
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+#include "unlzma.h"
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+
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+struct unlzma_ctx {
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+	const u8 *next_in;
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+	u8 *next_out;
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+	u8 *outbuf;
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+
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+	/* reader state */
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+	u32 code;
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+	u32 range;
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+	u32 bound;
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+
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+	/* writer state */
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+	u8 previous_byte;
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+	ssize_t pos;
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+
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+	/* cstate */
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+	int state;
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+	u32 rep0, rep1, rep2, rep3;
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+
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+	void *workspace;
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+} ctx;
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+
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+static int inbs = 0;
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+static inline u8
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+rc_read(void)
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+{
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+#if 0
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+	if (unlikely(++inbs > 16 * 1024)) {
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+		putstr(".");
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+		inbs = 0;
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+	}
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+#endif
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+	return *(ctx.next_in++);
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+}
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+
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+
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+static inline void
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+rc_get_code(void)
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+{
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+	ctx.code = (ctx.code << 8) | rc_read();
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+}
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+
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+static inline void
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+rc_normalize(void)
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+{
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+	if (ctx.range < (1 << RC_TOP_BITS)) {
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+		ctx.range <<= 8;
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+		rc_get_code();
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+	}
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+}
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+
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+static inline int
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+rc_is_bit_0(u16 *p)
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+{
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+	rc_normalize();
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+	ctx.bound = *p * (ctx.range >> RC_MODEL_TOTAL_BITS);
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+	return ctx.code < ctx.bound;
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+}
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+
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+static inline void
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+rc_update_bit_0(u16 *p)
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+{
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+	ctx.range = ctx.bound;
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+	*p += ((1 << RC_MODEL_TOTAL_BITS) - *p) >> RC_MOVE_BITS;
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+}
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+
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+static inline void
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+rc_update_bit_1(u16 *p)
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+{
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+	ctx.range -= ctx.bound;
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+	ctx.code -= ctx.bound;
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+	*p -= *p >> RC_MOVE_BITS;
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+}
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+
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+static inline bool
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+rc_get_bit(u16 *p, int *symbol)
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+{
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+	if (rc_is_bit_0(p)) {
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+		rc_update_bit_0(p);
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+		*symbol *= 2;
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+		return 0;
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+	} else {
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+		rc_update_bit_1(p);
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+		*symbol = *symbol * 2 + 1;
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+		return 1;
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+	}
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+}
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+
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+static inline int
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+rc_direct_bit(void)
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+{
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+	rc_normalize();
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+	ctx.range >>= 1;
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+	if (ctx.code >= ctx.range) {
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+		ctx.code -= ctx.range;
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+		return 1;
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+	}
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+	return 0;
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+}
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+
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+static inline void
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+rc_bit_tree_decode(u16 *p, int num_levels, int *symbol)
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+{
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+	int i = num_levels;
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+
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+	*symbol = 1;
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+	while (i--)
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+		rc_get_bit(p + *symbol, symbol);
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+	*symbol -= 1 << num_levels;
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+}
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+
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+static inline u8
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+peek_old_byte(u32 offs)
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+{
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+	u32 pos = ctx.pos - offs;
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+	return ctx.outbuf[pos];
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+}
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+
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+static inline void
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+write_byte(u8 byte)
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+{
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+	ctx.previous_byte = byte;
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+	*(ctx.next_out++) = byte;
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+	ctx.pos++;
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+}
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+
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+
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+static inline void
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+copy_byte(u32 offs)
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+{
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+	write_byte(peek_old_byte(offs));
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+}
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+
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+static inline void
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+copy_bytes(u32 rep0, int len)
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+{
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+	do {
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+		copy_byte(rep0);
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+		len--;
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+	} while (len != 0);
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+}
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+
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+static inline void
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+process_bit0(u16 *p, int pos_state, u16 *prob,
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+             int lc, u32 literal_pos_mask)
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+{
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+	int mi = 1;
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+	rc_update_bit_0(prob);
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+	prob = (p + LZMA_LITERAL +
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+		(LZMA_LIT_SIZE
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+		 * (((ctx.pos & literal_pos_mask) << lc)
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+		    + (ctx.previous_byte >> (8 - lc))))
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+		);
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+
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+	if (ctx.state >= LZMA_NUM_LIT_STATES) {
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+		int match_byte = peek_old_byte(ctx.rep0);
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+		do {
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+			u16 bit;
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+			u16 *prob_lit;
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+
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+			match_byte <<= 1;
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+			bit = match_byte & 0x100;
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+			prob_lit = prob + 0x100 + bit + mi;
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+			if (rc_get_bit(prob_lit, &mi) != !!bit)
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+				break;
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+		} while (mi < 0x100);
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+	}
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+	while (mi < 0x100) {
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+		u16 *prob_lit = prob + mi;
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+		rc_get_bit(prob_lit, &mi);
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						|
+	}
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+	write_byte(mi);
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+	if (ctx.state < 4)
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+		ctx.state = 0;
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+	else if (ctx.state < 10)
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+		ctx.state -= 3;
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+	else
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+		ctx.state -= 6;
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+}
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+
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+static inline void
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+process_bit1(u16 *p, int pos_state, u16 *prob)
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						|
+{
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						|
+	int offset;
 | 
						|
+	u16 *prob_len;
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						|
+	int num_bits;
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						|
+	int len;
 | 
						|
+
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+	rc_update_bit_1(prob);
 | 
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+	prob = p + LZMA_IS_REP + ctx.state;
 | 
						|
+	if (rc_is_bit_0(prob)) {
 | 
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+		rc_update_bit_0(prob);
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+		ctx.rep3 = ctx.rep2;
 | 
						|
+		ctx.rep2 = ctx.rep1;
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+		ctx.rep1 = ctx.rep0;
 | 
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+		ctx.state = ctx.state < LZMA_NUM_LIT_STATES ? 0 : 3;
 | 
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+		prob = p + LZMA_LEN_CODER;
 | 
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+	} else {
 | 
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+		rc_update_bit_1(prob);
 | 
						|
+		prob = p + LZMA_IS_REP_G0 + ctx.state;
 | 
						|
+		if (rc_is_bit_0(prob)) {
 | 
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+			rc_update_bit_0(prob);
 | 
						|
+			prob = (p + LZMA_IS_REP_0_LONG
 | 
						|
+				+ (ctx.state <<
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+				   LZMA_NUM_POS_BITS_MAX) +
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+				pos_state);
 | 
						|
+			if (rc_is_bit_0(prob)) {
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+				rc_update_bit_0(prob);
 | 
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+
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+				ctx.state = ctx.state < LZMA_NUM_LIT_STATES ?
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+					9 : 11;
 | 
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+				copy_byte(ctx.rep0);
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+				return;
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						|
+			} else {
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+				rc_update_bit_1(prob);
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+			}
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+		} else {
 | 
						|
+			u32 distance;
 | 
						|
+
 | 
						|
+			rc_update_bit_1(prob);
 | 
						|
+			prob = p + LZMA_IS_REP_G1 + ctx.state;
 | 
						|
+			if (rc_is_bit_0(prob)) {
 | 
						|
+				rc_update_bit_0(prob);
 | 
						|
+				distance = ctx.rep1;
 | 
						|
+			} else {
 | 
						|
+				rc_update_bit_1(prob);
 | 
						|
+				prob = p + LZMA_IS_REP_G2 + ctx.state;
 | 
						|
+				if (rc_is_bit_0(prob)) {
 | 
						|
+					rc_update_bit_0(prob);
 | 
						|
+					distance = ctx.rep2;
 | 
						|
+				} else {
 | 
						|
+					rc_update_bit_1(prob);
 | 
						|
+					distance = ctx.rep3;
 | 
						|
+					ctx.rep3 = ctx.rep2;
 | 
						|
+				}
 | 
						|
+				ctx.rep2 = ctx.rep1;
 | 
						|
+			}
 | 
						|
+			ctx.rep1 = ctx.rep0;
 | 
						|
+			ctx.rep0 = distance;
 | 
						|
+		}
 | 
						|
+		ctx.state = ctx.state < LZMA_NUM_LIT_STATES ? 8 : 11;
 | 
						|
+		prob = p + LZMA_REP_LEN_CODER;
 | 
						|
+	}
 | 
						|
+
 | 
						|
+	prob_len = prob + LZMA_LEN_CHOICE;
 | 
						|
+	if (rc_is_bit_0(prob_len)) {
 | 
						|
+		rc_update_bit_0(prob_len);
 | 
						|
+		prob_len = (prob + LZMA_LEN_LOW
 | 
						|
+			    + (pos_state <<
 | 
						|
+			       LZMA_LEN_NUM_LOW_BITS));
 | 
						|
+		offset = 0;
 | 
						|
+		num_bits = LZMA_LEN_NUM_LOW_BITS;
 | 
						|
+	} else {
 | 
						|
+		rc_update_bit_1(prob_len);
 | 
						|
+		prob_len = prob + LZMA_LEN_CHOICE_2;
 | 
						|
+		if (rc_is_bit_0(prob_len)) {
 | 
						|
+			rc_update_bit_0(prob_len);
 | 
						|
+			prob_len = (prob + LZMA_LEN_MID
 | 
						|
+				    + (pos_state <<
 | 
						|
+				       LZMA_LEN_NUM_MID_BITS));
 | 
						|
+			offset = 1 << LZMA_LEN_NUM_LOW_BITS;
 | 
						|
+			num_bits = LZMA_LEN_NUM_MID_BITS;
 | 
						|
+		} else {
 | 
						|
+			rc_update_bit_1(prob_len);
 | 
						|
+			prob_len = prob + LZMA_LEN_HIGH;
 | 
						|
+			offset = ((1 << LZMA_LEN_NUM_LOW_BITS)
 | 
						|
+				  + (1 << LZMA_LEN_NUM_MID_BITS));
 | 
						|
+			num_bits = LZMA_LEN_NUM_HIGH_BITS;
 | 
						|
+		}
 | 
						|
+	}
 | 
						|
+
 | 
						|
+	rc_bit_tree_decode(prob_len, num_bits, &len);
 | 
						|
+	len += offset;
 | 
						|
+
 | 
						|
+	if (ctx.state < 4) {
 | 
						|
+		int pos_slot;
 | 
						|
+
 | 
						|
+		ctx.state += LZMA_NUM_LIT_STATES;
 | 
						|
+		prob =
 | 
						|
+			p + LZMA_POS_SLOT +
 | 
						|
+			((len <
 | 
						|
+			  LZMA_NUM_LEN_TO_POS_STATES ? len :
 | 
						|
+			  LZMA_NUM_LEN_TO_POS_STATES - 1)
 | 
						|
+			 << LZMA_NUM_POS_SLOT_BITS);
 | 
						|
+		rc_bit_tree_decode(prob,
 | 
						|
+				   LZMA_NUM_POS_SLOT_BITS,
 | 
						|
+				   &pos_slot);
 | 
						|
+		if (pos_slot >= LZMA_START_POS_MODEL_INDEX) {
 | 
						|
+			int i, mi;
 | 
						|
+			num_bits = (pos_slot >> 1) - 1;
 | 
						|
+			ctx.rep0 = 2 | (pos_slot & 1);
 | 
						|
+			if (pos_slot < LZMA_END_POS_MODEL_INDEX) {
 | 
						|
+				ctx.rep0 <<= num_bits;
 | 
						|
+				prob = p + LZMA_SPEC_POS +
 | 
						|
+					ctx.rep0 - pos_slot - 1;
 | 
						|
+			} else {
 | 
						|
+				num_bits -= LZMA_NUM_ALIGN_BITS;
 | 
						|
+				while (num_bits--)
 | 
						|
+					ctx.rep0 = (ctx.rep0 << 1) |
 | 
						|
+						rc_direct_bit();
 | 
						|
+				prob = p + LZMA_ALIGN;
 | 
						|
+				ctx.rep0 <<= LZMA_NUM_ALIGN_BITS;
 | 
						|
+				num_bits = LZMA_NUM_ALIGN_BITS;
 | 
						|
+			}
 | 
						|
+			i = 1;
 | 
						|
+			mi = 1;
 | 
						|
+			while (num_bits--) {
 | 
						|
+				if (rc_get_bit(prob + mi, &mi))
 | 
						|
+					ctx.rep0 |= i;
 | 
						|
+				i <<= 1;
 | 
						|
+			}
 | 
						|
+		} else
 | 
						|
+			ctx.rep0 = pos_slot;
 | 
						|
+		if (++(ctx.rep0) == 0)
 | 
						|
+			return;
 | 
						|
+	}
 | 
						|
+
 | 
						|
+	len += LZMA_MATCH_MIN_LEN;
 | 
						|
+
 | 
						|
+	copy_bytes(ctx.rep0, len);
 | 
						|
+}
 | 
						|
+
 | 
						|
+
 | 
						|
+static int
 | 
						|
+do_unlzma(void)
 | 
						|
+{
 | 
						|
+	u8 hdr_buf[sizeof(struct lzma_header)];
 | 
						|
+	struct lzma_header *header = (struct lzma_header *)hdr_buf;
 | 
						|
+	u32 pos_state_mask;
 | 
						|
+	u32 literal_pos_mask;
 | 
						|
+	int lc, pb, lp;
 | 
						|
+	int num_probs;
 | 
						|
+	int i, mi;
 | 
						|
+	u16 *p;
 | 
						|
+
 | 
						|
+	for (i = 0; i < sizeof(struct lzma_header); i++) {
 | 
						|
+		hdr_buf[i] = rc_read();
 | 
						|
+	}
 | 
						|
+
 | 
						|
+	ctx.pos = 0;
 | 
						|
+	ctx.state = 0;
 | 
						|
+	ctx.rep0 = ctx.rep1 = ctx.rep2 = ctx.rep3 = 1;
 | 
						|
+
 | 
						|
+	ctx.previous_byte = 0;
 | 
						|
+	ctx.code = 0;
 | 
						|
+	ctx.range = 0xFFFFFFFF;
 | 
						|
+
 | 
						|
+	if (header->pos >= (9 * 5 * 5))
 | 
						|
+		return -1;
 | 
						|
+
 | 
						|
+	mi = 0;
 | 
						|
+	lc = header->pos;
 | 
						|
+	while (lc >= 9) {
 | 
						|
+		mi++;
 | 
						|
+		lc -= 9;
 | 
						|
+	}
 | 
						|
+	pb = 0;
 | 
						|
+	lp = mi;
 | 
						|
+	while (lp >= 5) {
 | 
						|
+		pb++;
 | 
						|
+		lp -= 5;
 | 
						|
+	}
 | 
						|
+	pos_state_mask = (1 << pb) - 1;
 | 
						|
+	literal_pos_mask = (1 << lp) - 1;
 | 
						|
+
 | 
						|
+	p = (u16 *) ctx.workspace;
 | 
						|
+	if (!p)
 | 
						|
+		return -1;
 | 
						|
+
 | 
						|
+	num_probs = LZMA_LITERAL + (LZMA_LIT_SIZE << (lc + lp));
 | 
						|
+	for (i = 0; i < num_probs; i++)
 | 
						|
+		p[i] = (1 << RC_MODEL_TOTAL_BITS) >> 1;
 | 
						|
+
 | 
						|
+	for (i = 0; i < 5; i++)
 | 
						|
+		rc_get_code();
 | 
						|
+
 | 
						|
+	while (1) {
 | 
						|
+		int pos_state =	ctx.pos & pos_state_mask;
 | 
						|
+		u16 *prob = p + LZMA_IS_MATCH +
 | 
						|
+			(ctx.state << LZMA_NUM_POS_BITS_MAX) + pos_state;
 | 
						|
+		if (rc_is_bit_0(prob))
 | 
						|
+			process_bit0(p, pos_state, prob,
 | 
						|
+				     lc, literal_pos_mask);
 | 
						|
+		else {
 | 
						|
+			process_bit1(p, pos_state, prob);
 | 
						|
+			if (ctx.rep0 == 0)
 | 
						|
+				break;
 | 
						|
+		}
 | 
						|
+	}
 | 
						|
+
 | 
						|
+	return ctx.pos;
 | 
						|
+}
 | 
						|
+
 | 
						|
+
 | 
						|
+static int unlzma(unsigned char *dest, const unsigned char *src, unsigned char *workspace)
 | 
						|
+{
 | 
						|
+	memset(&ctx, 0, sizeof(ctx));
 | 
						|
+	ctx.outbuf = dest;
 | 
						|
+	ctx.next_in = src;
 | 
						|
+	ctx.next_out = dest;
 | 
						|
+	ctx.workspace = workspace;
 | 
						|
+
 | 
						|
+	return do_unlzma();
 | 
						|
+}
 | 
						|
+
 | 
						|
+
 | 
						|
--- /dev/null
 | 
						|
+++ b/arch/arm/boot/compressed/unlzma.h
 | 
						|
@@ -0,0 +1,81 @@
 | 
						|
+/* LZMA uncompresion module for pcomp
 | 
						|
+ * Copyright (C) 2009  Felix Fietkau <nbd@openwrt.org>
 | 
						|
+ *
 | 
						|
+ * Based on:
 | 
						|
+ *  Initial Linux kernel adaptation
 | 
						|
+ *  Copyright (C) 2006  Alain < alain@knaff.lu >
 | 
						|
+ *
 | 
						|
+ *  Based on small lzma deflate implementation/Small range coder
 | 
						|
+ *  implementation for lzma.
 | 
						|
+ *  Copyright (C) 2006  Aurelien Jacobs < aurel@gnuage.org >
 | 
						|
+ *
 | 
						|
+ *  Based on LzmaDecode.c from the LZMA SDK 4.22 (http://www.7-zip.org/)
 | 
						|
+ *  Copyright (C) 1999-2005  Igor Pavlov
 | 
						|
+ *
 | 
						|
+ * This program is free software; you can redistribute it and/or modify it
 | 
						|
+ * under the terms of the GNU General Public License version 2 as published
 | 
						|
+ * by the Free Software Foundation.
 | 
						|
+ */
 | 
						|
+#ifndef __UNLZMA_H
 | 
						|
+#define __UNLZMA_H
 | 
						|
+
 | 
						|
+struct lzma_header {
 | 
						|
+	__u8 pos;
 | 
						|
+	__le32 dict_size;
 | 
						|
+	__le64 uncompr_size;
 | 
						|
+} __attribute__ ((packed));
 | 
						|
+
 | 
						|
+
 | 
						|
+#define RC_TOP_BITS 24
 | 
						|
+#define RC_MOVE_BITS 5
 | 
						|
+#define RC_MODEL_TOTAL_BITS 11
 | 
						|
+
 | 
						|
+#define LZMA_BASE_SIZE 1846
 | 
						|
+#define LZMA_LIT_SIZE 768
 | 
						|
+
 | 
						|
+#define LZMA_NUM_POS_BITS_MAX 4
 | 
						|
+
 | 
						|
+#define LZMA_LEN_NUM_LOW_BITS 3
 | 
						|
+#define LZMA_LEN_NUM_MID_BITS 3
 | 
						|
+#define LZMA_LEN_NUM_HIGH_BITS 8
 | 
						|
+
 | 
						|
+#define LZMA_LEN_CHOICE 0
 | 
						|
+#define LZMA_LEN_CHOICE_2 (LZMA_LEN_CHOICE + 1)
 | 
						|
+#define LZMA_LEN_LOW (LZMA_LEN_CHOICE_2 + 1)
 | 
						|
+#define LZMA_LEN_MID (LZMA_LEN_LOW \
 | 
						|
+		      + (1 << (LZMA_NUM_POS_BITS_MAX + LZMA_LEN_NUM_LOW_BITS)))
 | 
						|
+#define LZMA_LEN_HIGH (LZMA_LEN_MID \
 | 
						|
+		       +(1 << (LZMA_NUM_POS_BITS_MAX + LZMA_LEN_NUM_MID_BITS)))
 | 
						|
+#define LZMA_NUM_LEN_PROBS (LZMA_LEN_HIGH + (1 << LZMA_LEN_NUM_HIGH_BITS))
 | 
						|
+
 | 
						|
+#define LZMA_NUM_STATES 12
 | 
						|
+#define LZMA_NUM_LIT_STATES 7
 | 
						|
+
 | 
						|
+#define LZMA_START_POS_MODEL_INDEX 4
 | 
						|
+#define LZMA_END_POS_MODEL_INDEX 14
 | 
						|
+#define LZMA_NUM_FULL_DISTANCES (1 << (LZMA_END_POS_MODEL_INDEX >> 1))
 | 
						|
+
 | 
						|
+#define LZMA_NUM_POS_SLOT_BITS 6
 | 
						|
+#define LZMA_NUM_LEN_TO_POS_STATES 4
 | 
						|
+
 | 
						|
+#define LZMA_NUM_ALIGN_BITS 4
 | 
						|
+
 | 
						|
+#define LZMA_MATCH_MIN_LEN 2
 | 
						|
+
 | 
						|
+#define LZMA_IS_MATCH 0
 | 
						|
+#define LZMA_IS_REP (LZMA_IS_MATCH + (LZMA_NUM_STATES << LZMA_NUM_POS_BITS_MAX))
 | 
						|
+#define LZMA_IS_REP_G0 (LZMA_IS_REP + LZMA_NUM_STATES)
 | 
						|
+#define LZMA_IS_REP_G1 (LZMA_IS_REP_G0 + LZMA_NUM_STATES)
 | 
						|
+#define LZMA_IS_REP_G2 (LZMA_IS_REP_G1 + LZMA_NUM_STATES)
 | 
						|
+#define LZMA_IS_REP_0_LONG (LZMA_IS_REP_G2 + LZMA_NUM_STATES)
 | 
						|
+#define LZMA_POS_SLOT (LZMA_IS_REP_0_LONG \
 | 
						|
+		       + (LZMA_NUM_STATES << LZMA_NUM_POS_BITS_MAX))
 | 
						|
+#define LZMA_SPEC_POS (LZMA_POS_SLOT \
 | 
						|
+		       +(LZMA_NUM_LEN_TO_POS_STATES << LZMA_NUM_POS_SLOT_BITS))
 | 
						|
+#define LZMA_ALIGN (LZMA_SPEC_POS \
 | 
						|
+		    + LZMA_NUM_FULL_DISTANCES - LZMA_END_POS_MODEL_INDEX)
 | 
						|
+#define LZMA_LEN_CODER (LZMA_ALIGN + (1 << LZMA_NUM_ALIGN_BITS))
 | 
						|
+#define LZMA_REP_LEN_CODER (LZMA_LEN_CODER + LZMA_NUM_LEN_PROBS)
 | 
						|
+#define LZMA_LITERAL (LZMA_REP_LEN_CODER + LZMA_NUM_LEN_PROBS)
 | 
						|
+
 | 
						|
+#endif
 |