+++ /dev/null
---- a/Makefile
-+++ b/Makefile
-@@ -1,14 +1,17 @@
- KERNEL_BUILD_PATH ?= "/lib/modules/$(shell uname -r)/build"
-
- XVM = sub-projects/allocators/xvmalloc-kmod
-+LZO = sub-projects/compression/lzo-kmod
- EXTRA_CFLAGS := -DCONFIG_RAMZSWAP_STATS \
- -Wall
-
--obj-m += ramzswap.o
-+obj-m += ramzswap.o $(LZO)/lzo1x.o
- ramzswap-objs := ramzswap_drv.o $(XVM)/xvmalloc.o
-+
-
- all:
- make -C $(KERNEL_BUILD_PATH) M=$(PWD) modules
-+ make -C $(KERNEL_BUILD_PATH) M=$(PWD)/$(LZO) modules
- make -C sub-projects/rzscontrol
-
- doc:
-@@ -16,5 +19,6 @@ doc:
-
- clean:
- make -C $(KERNEL_BUILD_PATH) M=$(PWD) clean
-+ make -C $(KERNEL_BUILD_PATH) M=$(PWD)/$(LZO) clean
- make -C sub-projects/rzscontrol clean
- @rm -rf *.ko
---- a/ramzswap_drv.c
-+++ b/ramzswap_drv.c
-@@ -23,13 +23,13 @@
- #include <linux/device.h>
- #include <linux/genhd.h>
- #include <linux/highmem.h>
--#include <linux/lzo.h>
- #include <linux/string.h>
- #include <linux/swap.h>
- #include <linux/swapops.h>
- #include <linux/vmalloc.h>
- #include <linux/version.h>
-
-+#include "lzo.h"
- #include "compat.h"
- #include "ramzswap_drv.h"
-
---- /dev/null
-+++ b/sub-projects/compression/lzo-kmod/lzo1x.c
-@@ -0,0 +1,7 @@
-+#include <linux/module.h>
-+
-+#include "lzo1x_compress.c"
-+#include "lzo1x_decompress.c"
-+
-+MODULE_LICENSE("GPL");
-+MODULE_DESCRIPTION("LZO1X Lib");
---- /dev/null
-+++ b/sub-projects/compression/lzo-kmod/lzo1x_compress.c
-@@ -0,0 +1,227 @@
-+/*
-+ * LZO1X Compressor from MiniLZO
-+ *
-+ * Copyright (C) 1996-2005 Markus F.X.J. Oberhumer <markus@oberhumer.com>
-+ *
-+ * The full LZO package can be found at:
-+ * http://www.oberhumer.com/opensource/lzo/
-+ *
-+ * Changed for kernel use by:
-+ * Nitin Gupta <nitingupta910@gmail.com>
-+ * Richard Purdie <rpurdie@openedhand.com>
-+ */
-+
-+#include <linux/module.h>
-+#include <linux/kernel.h>
-+#include <asm/unaligned.h>
-+
-+#include "lzodefs.h"
-+#include "lzo.h"
-+
-+static noinline size_t
-+_lzo1x_1_do_compress(const unsigned char *in, size_t in_len,
-+ unsigned char *out, size_t *out_len, void *wrkmem)
-+{
-+ const unsigned char * const in_end = in + in_len;
-+ const unsigned char * const ip_end = in + in_len - M2_MAX_LEN - 5;
-+ const unsigned char ** const dict = wrkmem;
-+ const unsigned char *ip = in, *ii = ip;
-+ const unsigned char *end, *m, *m_pos;
-+ size_t m_off, m_len, dindex;
-+ unsigned char *op = out;
-+
-+ ip += 4;
-+
-+ for (;;) {
-+ dindex = ((size_t)(0x21 * DX3(ip, 5, 5, 6)) >> 5) & D_MASK;
-+ m_pos = dict[dindex];
-+
-+ if (m_pos < in)
-+ goto literal;
-+
-+ if (ip == m_pos || ((size_t)(ip - m_pos) > M4_MAX_OFFSET))
-+ goto literal;
-+
-+ m_off = ip - m_pos;
-+ if (m_off <= M2_MAX_OFFSET || m_pos[3] == ip[3])
-+ goto try_match;
-+
-+ dindex = (dindex & (D_MASK & 0x7ff)) ^ (D_HIGH | 0x1f);
-+ m_pos = dict[dindex];
-+
-+ if (m_pos < in)
-+ goto literal;
-+
-+ if (ip == m_pos || ((size_t)(ip - m_pos) > M4_MAX_OFFSET))
-+ goto literal;
-+
-+ m_off = ip - m_pos;
-+ if (m_off <= M2_MAX_OFFSET || m_pos[3] == ip[3])
-+ goto try_match;
-+
-+ goto literal;
-+
-+try_match:
-+ if (get_unaligned((const unsigned short *)m_pos)
-+ == get_unaligned((const unsigned short *)ip)) {
-+ if (likely(m_pos[2] == ip[2]))
-+ goto match;
-+ }
-+
-+literal:
-+ dict[dindex] = ip;
-+ ++ip;
-+ if (unlikely(ip >= ip_end))
-+ break;
-+ continue;
-+
-+match:
-+ dict[dindex] = ip;
-+ if (ip != ii) {
-+ size_t t = ip - ii;
-+
-+ if (t <= 3) {
-+ op[-2] |= t;
-+ } else if (t <= 18) {
-+ *op++ = (t - 3);
-+ } else {
-+ size_t tt = t - 18;
-+
-+ *op++ = 0;
-+ while (tt > 255) {
-+ tt -= 255;
-+ *op++ = 0;
-+ }
-+ *op++ = tt;
-+ }
-+ do {
-+ *op++ = *ii++;
-+ } while (--t > 0);
-+ }
-+
-+ ip += 3;
-+ if (m_pos[3] != *ip++ || m_pos[4] != *ip++
-+ || m_pos[5] != *ip++ || m_pos[6] != *ip++
-+ || m_pos[7] != *ip++ || m_pos[8] != *ip++) {
-+ --ip;
-+ m_len = ip - ii;
-+
-+ if (m_off <= M2_MAX_OFFSET) {
-+ m_off -= 1;
-+ *op++ = (((m_len - 1) << 5)
-+ | ((m_off & 7) << 2));
-+ *op++ = (m_off >> 3);
-+ } else if (m_off <= M3_MAX_OFFSET) {
-+ m_off -= 1;
-+ *op++ = (M3_MARKER | (m_len - 2));
-+ goto m3_m4_offset;
-+ } else {
-+ m_off -= 0x4000;
-+
-+ *op++ = (M4_MARKER | ((m_off & 0x4000) >> 11)
-+ | (m_len - 2));
-+ goto m3_m4_offset;
-+ }
-+ } else {
-+ end = in_end;
-+ m = m_pos + M2_MAX_LEN + 1;
-+
-+ while (ip < end && *m == *ip) {
-+ m++;
-+ ip++;
-+ }
-+ m_len = ip - ii;
-+
-+ if (m_off <= M3_MAX_OFFSET) {
-+ m_off -= 1;
-+ if (m_len <= 33) {
-+ *op++ = (M3_MARKER | (m_len - 2));
-+ } else {
-+ m_len -= 33;
-+ *op++ = M3_MARKER | 0;
-+ goto m3_m4_len;
-+ }
-+ } else {
-+ m_off -= 0x4000;
-+ if (m_len <= M4_MAX_LEN) {
-+ *op++ = (M4_MARKER
-+ | ((m_off & 0x4000) >> 11)
-+ | (m_len - 2));
-+ } else {
-+ m_len -= M4_MAX_LEN;
-+ *op++ = (M4_MARKER
-+ | ((m_off & 0x4000) >> 11));
-+m3_m4_len:
-+ while (m_len > 255) {
-+ m_len -= 255;
-+ *op++ = 0;
-+ }
-+
-+ *op++ = (m_len);
-+ }
-+ }
-+m3_m4_offset:
-+ *op++ = ((m_off & 63) << 2);
-+ *op++ = (m_off >> 6);
-+ }
-+
-+ ii = ip;
-+ if (unlikely(ip >= ip_end))
-+ break;
-+ }
-+
-+ *out_len = op - out;
-+ return in_end - ii;
-+}
-+
-+int lzo1x_1_compress(const unsigned char *in, size_t in_len, unsigned char *out,
-+ size_t *out_len, void *wrkmem)
-+{
-+ const unsigned char *ii;
-+ unsigned char *op = out;
-+ size_t t;
-+
-+ if (unlikely(in_len <= M2_MAX_LEN + 5)) {
-+ t = in_len;
-+ } else {
-+ t = _lzo1x_1_do_compress(in, in_len, op, out_len, wrkmem);
-+ op += *out_len;
-+ }
-+
-+ if (t > 0) {
-+ ii = in + in_len - t;
-+
-+ if (op == out && t <= 238) {
-+ *op++ = (17 + t);
-+ } else if (t <= 3) {
-+ op[-2] |= t;
-+ } else if (t <= 18) {
-+ *op++ = (t - 3);
-+ } else {
-+ size_t tt = t - 18;
-+
-+ *op++ = 0;
-+ while (tt > 255) {
-+ tt -= 255;
-+ *op++ = 0;
-+ }
-+
-+ *op++ = tt;
-+ }
-+ do {
-+ *op++ = *ii++;
-+ } while (--t > 0);
-+ }
-+
-+ *op++ = M4_MARKER | 1;
-+ *op++ = 0;
-+ *op++ = 0;
-+
-+ *out_len = op - out;
-+ return LZO_E_OK;
-+}
-+EXPORT_SYMBOL_GPL(lzo1x_1_compress);
-+
-+MODULE_LICENSE("GPL");
-+MODULE_DESCRIPTION("LZO1X-1 Compressor");
-+
---- /dev/null
-+++ b/sub-projects/compression/lzo-kmod/lzo1x_decompress.c
-@@ -0,0 +1,255 @@
-+/*
-+ * LZO1X Decompressor from MiniLZO
-+ *
-+ * Copyright (C) 1996-2005 Markus F.X.J. Oberhumer <markus@oberhumer.com>
-+ *
-+ * The full LZO package can be found at:
-+ * http://www.oberhumer.com/opensource/lzo/
-+ *
-+ * Changed for kernel use by:
-+ * Nitin Gupta <nitingupta910@gmail.com>
-+ * Richard Purdie <rpurdie@openedhand.com>
-+ */
-+
-+#include <linux/module.h>
-+#include <linux/kernel.h>
-+#include <asm/byteorder.h>
-+#include <asm/unaligned.h>
-+
-+#include "lzodefs.h"
-+#include "lzo.h"
-+
-+#define HAVE_IP(x, ip_end, ip) ((size_t)(ip_end - ip) < (x))
-+#define HAVE_OP(x, op_end, op) ((size_t)(op_end - op) < (x))
-+#define HAVE_LB(m_pos, out, op) (m_pos < out || m_pos >= op)
-+
-+#define COPY4(dst, src) \
-+ put_unaligned(get_unaligned((const u32 *)(src)), (u32 *)(dst))
-+
-+int lzo1x_decompress_safe(const unsigned char *in, size_t in_len,
-+ unsigned char *out, size_t *out_len)
-+{
-+ const unsigned char * const ip_end = in + in_len;
-+ unsigned char * const op_end = out + *out_len;
-+ const unsigned char *ip = in, *m_pos;
-+ unsigned char *op = out;
-+ size_t t;
-+
-+ *out_len = 0;
-+
-+ if (*ip > 17) {
-+ t = *ip++ - 17;
-+ if (t < 4)
-+ goto match_next;
-+ if (HAVE_OP(t, op_end, op))
-+ goto output_overrun;
-+ if (HAVE_IP(t + 1, ip_end, ip))
-+ goto input_overrun;
-+ do {
-+ *op++ = *ip++;
-+ } while (--t > 0);
-+ goto first_literal_run;
-+ }
-+
-+ while ((ip < ip_end)) {
-+ t = *ip++;
-+ if (t >= 16)
-+ goto match;
-+ if (t == 0) {
-+ if (HAVE_IP(1, ip_end, ip))
-+ goto input_overrun;
-+ while (*ip == 0) {
-+ t += 255;
-+ ip++;
-+ if (HAVE_IP(1, ip_end, ip))
-+ goto input_overrun;
-+ }
-+ t += 15 + *ip++;
-+ }
-+ if (HAVE_OP(t + 3, op_end, op))
-+ goto output_overrun;
-+ if (HAVE_IP(t + 4, ip_end, ip))
-+ goto input_overrun;
-+
-+ COPY4(op, ip);
-+ op += 4;
-+ ip += 4;
-+ if (--t > 0) {
-+ if (t >= 4) {
-+ do {
-+ COPY4(op, ip);
-+ op += 4;
-+ ip += 4;
-+ t -= 4;
-+ } while (t >= 4);
-+ if (t > 0) {
-+ do {
-+ *op++ = *ip++;
-+ } while (--t > 0);
-+ }
-+ } else {
-+ do {
-+ *op++ = *ip++;
-+ } while (--t > 0);
-+ }
-+ }
-+
-+first_literal_run:
-+ t = *ip++;
-+ if (t >= 16)
-+ goto match;
-+ m_pos = op - (1 + M2_MAX_OFFSET);
-+ m_pos -= t >> 2;
-+ m_pos -= *ip++ << 2;
-+
-+ if (HAVE_LB(m_pos, out, op))
-+ goto lookbehind_overrun;
-+
-+ if (HAVE_OP(3, op_end, op))
-+ goto output_overrun;
-+ *op++ = *m_pos++;
-+ *op++ = *m_pos++;
-+ *op++ = *m_pos;
-+
-+ goto match_done;
-+
-+ do {
-+match:
-+ if (t >= 64) {
-+ m_pos = op - 1;
-+ m_pos -= (t >> 2) & 7;
-+ m_pos -= *ip++ << 3;
-+ t = (t >> 5) - 1;
-+ if (HAVE_LB(m_pos, out, op))
-+ goto lookbehind_overrun;
-+ if (HAVE_OP(t + 3 - 1, op_end, op))
-+ goto output_overrun;
-+ goto copy_match;
-+ } else if (t >= 32) {
-+ t &= 31;
-+ if (t == 0) {
-+ if (HAVE_IP(1, ip_end, ip))
-+ goto input_overrun;
-+ while (*ip == 0) {
-+ t += 255;
-+ ip++;
-+ if (HAVE_IP(1, ip_end, ip))
-+ goto input_overrun;
-+ }
-+ t += 31 + *ip++;
-+ }
-+ m_pos = op - 1;
-+ m_pos -= le16_to_cpu(get_unaligned(
-+ (const unsigned short *)ip)) >> 2;
-+ ip += 2;
-+ } else if (t >= 16) {
-+ m_pos = op;
-+ m_pos -= (t & 8) << 11;
-+
-+ t &= 7;
-+ if (t == 0) {
-+ if (HAVE_IP(1, ip_end, ip))
-+ goto input_overrun;
-+ while (*ip == 0) {
-+ t += 255;
-+ ip++;
-+ if (HAVE_IP(1, ip_end, ip))
-+ goto input_overrun;
-+ }
-+ t += 7 + *ip++;
-+ }
-+ m_pos -= le16_to_cpu(get_unaligned(
-+ (const unsigned short *)ip)) >> 2;
-+ ip += 2;
-+ if (m_pos == op)
-+ goto eof_found;
-+ m_pos -= 0x4000;
-+ } else {
-+ m_pos = op - 1;
-+ m_pos -= t >> 2;
-+ m_pos -= *ip++ << 2;
-+
-+ if (HAVE_LB(m_pos, out, op))
-+ goto lookbehind_overrun;
-+ if (HAVE_OP(2, op_end, op))
-+ goto output_overrun;
-+
-+ *op++ = *m_pos++;
-+ *op++ = *m_pos;
-+ goto match_done;
-+ }
-+
-+ if (HAVE_LB(m_pos, out, op))
-+ goto lookbehind_overrun;
-+ if (HAVE_OP(t + 3 - 1, op_end, op))
-+ goto output_overrun;
-+
-+ if (t >= 2 * 4 - (3 - 1) && (op - m_pos) >= 4) {
-+ COPY4(op, m_pos);
-+ op += 4;
-+ m_pos += 4;
-+ t -= 4 - (3 - 1);
-+ do {
-+ COPY4(op, m_pos);
-+ op += 4;
-+ m_pos += 4;
-+ t -= 4;
-+ } while (t >= 4);
-+ if (t > 0)
-+ do {
-+ *op++ = *m_pos++;
-+ } while (--t > 0);
-+ } else {
-+copy_match:
-+ *op++ = *m_pos++;
-+ *op++ = *m_pos++;
-+ do {
-+ *op++ = *m_pos++;
-+ } while (--t > 0);
-+ }
-+match_done:
-+ t = ip[-2] & 3;
-+ if (t == 0)
-+ break;
-+match_next:
-+ if (HAVE_OP(t, op_end, op))
-+ goto output_overrun;
-+ if (HAVE_IP(t + 1, ip_end, ip))
-+ goto input_overrun;
-+
-+ *op++ = *ip++;
-+ if (t > 1) {
-+ *op++ = *ip++;
-+ if (t > 2)
-+ *op++ = *ip++;
-+ }
-+
-+ t = *ip++;
-+ } while (ip < ip_end);
-+ }
-+
-+ *out_len = op - out;
-+ return LZO_E_EOF_NOT_FOUND;
-+
-+eof_found:
-+ *out_len = op - out;
-+ return (ip == ip_end ? LZO_E_OK :
-+ (ip < ip_end ? LZO_E_INPUT_NOT_CONSUMED : LZO_E_INPUT_OVERRUN));
-+input_overrun:
-+ *out_len = op - out;
-+ return LZO_E_INPUT_OVERRUN;
-+
-+output_overrun:
-+ *out_len = op - out;
-+ return LZO_E_OUTPUT_OVERRUN;
-+
-+lookbehind_overrun:
-+ *out_len = op - out;
-+ return LZO_E_LOOKBEHIND_OVERRUN;
-+}
-+
-+EXPORT_SYMBOL_GPL(lzo1x_decompress_safe);
-+
-+MODULE_LICENSE("GPL");
-+MODULE_DESCRIPTION("LZO1X Decompressor");
-+
---- /dev/null
-+++ b/sub-projects/compression/lzo-kmod/lzodefs.h
-@@ -0,0 +1,43 @@
-+/*
-+ * lzodefs.h -- architecture, OS and compiler specific defines
-+ *
-+ * Copyright (C) 1996-2005 Markus F.X.J. Oberhumer <markus@oberhumer.com>
-+ *
-+ * The full LZO package can be found at:
-+ * http://www.oberhumer.com/opensource/lzo/
-+ *
-+ * Changed for kernel use by:
-+ * Nitin Gupta <nitingupta910@gmail.com>
-+ * Richard Purdie <rpurdie@openedhand.com>
-+ */
-+
-+#define LZO_VERSION 0x2020
-+#define LZO_VERSION_STRING "2.02"
-+#define LZO_VERSION_DATE "Oct 17 2005"
-+
-+#define M1_MAX_OFFSET 0x0400
-+#define M2_MAX_OFFSET 0x0800
-+#define M3_MAX_OFFSET 0x4000
-+#define M4_MAX_OFFSET 0xbfff
-+
-+#define M1_MIN_LEN 2
-+#define M1_MAX_LEN 2
-+#define M2_MIN_LEN 3
-+#define M2_MAX_LEN 8
-+#define M3_MIN_LEN 3
-+#define M3_MAX_LEN 33
-+#define M4_MIN_LEN 3
-+#define M4_MAX_LEN 9
-+
-+#define M1_MARKER 0
-+#define M2_MARKER 64
-+#define M3_MARKER 32
-+#define M4_MARKER 16
-+
-+#define D_BITS 14
-+#define D_MASK ((1u << D_BITS) - 1)
-+#define D_HIGH ((D_MASK >> 1) + 1)
-+
-+#define DX2(p, s1, s2) (((((size_t)((p)[2]) << (s2)) ^ (p)[1]) \
-+ << (s1)) ^ (p)[0])
-+#define DX3(p, s1, s2, s3) ((DX2((p)+1, s2, s3) << (s1)) ^ (p)[0])
---- /dev/null
-+++ b/sub-projects/compression/lzo-kmod/lzo.h
-@@ -0,0 +1,44 @@
-+#ifndef __LZO_H__
-+#define __LZO_H__
-+/*
-+ * LZO Public Kernel Interface
-+ * A mini subset of the LZO real-time data compression library
-+ *
-+ * Copyright (C) 1996-2005 Markus F.X.J. Oberhumer <markus@oberhumer.com>
-+ *
-+ * The full LZO package can be found at:
-+ * http://www.oberhumer.com/opensource/lzo/
-+ *
-+ * Changed for kernel use by:
-+ * Nitin Gupta <nitingupta910@gmail.com>
-+ * Richard Purdie <rpurdie@openedhand.com>
-+ */
-+
-+#define LZO1X_MEM_COMPRESS (16384 * sizeof(unsigned char *))
-+#define LZO1X_1_MEM_COMPRESS LZO1X_MEM_COMPRESS
-+
-+#define lzo1x_worst_compress(x) ((x) + ((x) / 16) + 64 + 3)
-+
-+/* This requires 'workmem' of size LZO1X_1_MEM_COMPRESS */
-+int lzo1x_1_compress(const unsigned char *src, size_t src_len,
-+ unsigned char *dst, size_t *dst_len, void *wrkmem);
-+
-+/* safe decompression with overrun testing */
-+int lzo1x_decompress_safe(const unsigned char *src, size_t src_len,
-+ unsigned char *dst, size_t *dst_len);
-+
-+/*
-+ * Return values (< 0 = Error)
-+ */
-+#define LZO_E_OK 0
-+#define LZO_E_ERROR (-1)
-+#define LZO_E_OUT_OF_MEMORY (-2)
-+#define LZO_E_NOT_COMPRESSIBLE (-3)
-+#define LZO_E_INPUT_OVERRUN (-4)
-+#define LZO_E_OUTPUT_OVERRUN (-5)
-+#define LZO_E_LOOKBEHIND_OVERRUN (-6)
-+#define LZO_E_EOF_NOT_FOUND (-7)
-+#define LZO_E_INPUT_NOT_CONSUMED (-8)
-+#define LZO_E_NOT_YET_IMPLEMENTED (-9)
-+
-+#endif
---- /dev/null
-+++ b/sub-projects/compression/lzo-kmod/Makefile
-@@ -0,0 +1,8 @@
-+obj-m += lzo1x_compress.o lzo1x_decompress.o
-+
-+all:
-+ make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules
-+
-+clean:
-+ make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean
-+
projects / openwrt / svn-archive / archive.git / blobdiff