forked from M-Labs/nac3
SDRAM loader
This commit is contained in:
parent
21ae674510
commit
b123e15b3c
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@ -42,6 +42,22 @@ version = "0.3.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "0f8cb7306107e4b10e64994de6d3274bd08996a7c1322a27b86482392f96be0a"
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checksum = "0f8cb7306107e4b10e64994de6d3274bd08996a7c1322a27b86482392f96be0a"
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[[package]]
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name = "cstr_core"
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version = "0.2.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "8758514b5f03968703f1db1f1e196e031d5268f5295ff99a5bf345008790ba85"
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dependencies = [
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"cty",
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"memchr",
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]
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[[package]]
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name = "cty"
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version = "0.2.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7313c0d620d0cb4dbd9d019e461a4beb501071ff46ec0ab933efb4daa76d73e3"
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[[package]]
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[[package]]
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name = "dyld"
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name = "dyld"
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version = "0.1.0"
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version = "0.1.0"
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@ -134,7 +150,7 @@ dependencies = [
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[[package]]
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[[package]]
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name = "libasync"
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name = "libasync"
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version = "0.0.0"
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version = "0.0.0"
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source = "git+https://git.m-labs.hk/M-Labs/zc706.git#aa9379463207a02ee7ca4e597054a447b9a90232"
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source = "git+https://git.m-labs.hk/M-Labs/zc706.git#614b1ef350edd8576fc71292fc89cf79a1810aba"
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dependencies = [
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dependencies = [
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"embedded-hal",
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"embedded-hal",
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"libcortex_a9",
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"libcortex_a9",
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@ -146,7 +162,7 @@ dependencies = [
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[[package]]
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[[package]]
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name = "libboard_zynq"
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name = "libboard_zynq"
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version = "0.0.0"
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version = "0.0.0"
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source = "git+https://git.m-labs.hk/M-Labs/zc706.git#aa9379463207a02ee7ca4e597054a447b9a90232"
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source = "git+https://git.m-labs.hk/M-Labs/zc706.git#614b1ef350edd8576fc71292fc89cf79a1810aba"
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dependencies = [
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dependencies = [
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"bit_field",
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"bit_field",
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"embedded-hal",
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"embedded-hal",
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@ -161,7 +177,7 @@ dependencies = [
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[[package]]
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[[package]]
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name = "libcortex_a9"
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name = "libcortex_a9"
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version = "0.0.0"
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version = "0.0.0"
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source = "git+https://git.m-labs.hk/M-Labs/zc706.git#aa9379463207a02ee7ca4e597054a447b9a90232"
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source = "git+https://git.m-labs.hk/M-Labs/zc706.git#614b1ef350edd8576fc71292fc89cf79a1810aba"
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dependencies = [
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dependencies = [
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"bit_field",
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"bit_field",
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"libregister",
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"libregister",
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@ -170,7 +186,7 @@ dependencies = [
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[[package]]
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[[package]]
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name = "libregister"
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name = "libregister"
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version = "0.0.0"
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version = "0.0.0"
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source = "git+https://git.m-labs.hk/M-Labs/zc706.git#aa9379463207a02ee7ca4e597054a447b9a90232"
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source = "git+https://git.m-labs.hk/M-Labs/zc706.git#614b1ef350edd8576fc71292fc89cf79a1810aba"
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dependencies = [
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dependencies = [
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"bit_field",
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"bit_field",
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"vcell",
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"vcell",
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@ -180,7 +196,7 @@ dependencies = [
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[[package]]
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[[package]]
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name = "libsupport_zynq"
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name = "libsupport_zynq"
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version = "0.0.0"
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version = "0.0.0"
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source = "git+https://git.m-labs.hk/M-Labs/zc706.git#aa9379463207a02ee7ca4e597054a447b9a90232"
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source = "git+https://git.m-labs.hk/M-Labs/zc706.git#614b1ef350edd8576fc71292fc89cf79a1810aba"
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dependencies = [
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dependencies = [
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"compiler_builtins",
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"compiler_builtins",
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"libboard_zynq",
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"libboard_zynq",
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@ -193,9 +209,9 @@ dependencies = [
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[[package]]
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[[package]]
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name = "linked_list_allocator"
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name = "linked_list_allocator"
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version = "0.8.2"
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version = "0.8.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "c1070ea54beccbfd3a3987aca6440f94cc1e0b447c2d979d8c7f761e265417e4"
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checksum = "d6b60501dd4c850950bb43f970d544f6ce04e0ca021da2db2538fbe9d923f19e"
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[[package]]
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[[package]]
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name = "log"
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name = "log"
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@ -212,6 +228,12 @@ version = "0.7.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "fdcec5e97041c7f0f1c5b7d93f12e57293c831c646f4cc7a5db59460c7ea8de6"
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checksum = "fdcec5e97041c7f0f1c5b7d93f12e57293c831c646f4cc7a5db59460c7ea8de6"
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[[package]]
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name = "memchr"
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version = "2.3.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "3728d817d99e5ac407411fa471ff9800a778d88a24685968b36824eaf4bee400"
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[[package]]
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[[package]]
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name = "nb"
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name = "nb"
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version = "0.1.2"
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version = "0.1.2"
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@ -319,6 +341,17 @@ dependencies = [
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"unicode-xid",
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"unicode-xid",
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]
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]
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[[package]]
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name = "szl"
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version = "0.1.0"
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dependencies = [
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"cstr_core",
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"libboard_zynq",
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"libcortex_a9",
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"libsupport_zynq",
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"log",
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]
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[[package]]
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[[package]]
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name = "unicode-xid"
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name = "unicode-xid"
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version = "0.2.0"
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version = "0.2.0"
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@ -1,7 +1,8 @@
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[workspace]
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[workspace]
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members = [
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members = [
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"libdyld",
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"libdyld",
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"runtime"
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"runtime",
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"szl"
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]
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]
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[profile.dev]
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[profile.dev]
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@ -0,0 +1,6 @@
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Build with:
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```shell
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cargo xbuild -p runtime --release
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cargo xbuild -p szl --release
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```
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@ -8,6 +8,6 @@ TARGET_FOLDER=/tmp/zynq-\$USER
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ssh $TARGET_HOST "mkdir -p $TARGET_FOLDER"
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ssh $TARGET_HOST "mkdir -p $TARGET_FOLDER"
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rsync openocd/* $TARGET_HOST:$TARGET_FOLDER
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rsync openocd/* $TARGET_HOST:$TARGET_FOLDER
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rsync target/armv7-none-eabihf/release/runtime $TARGET_HOST:$TARGET_FOLDER
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rsync target/armv7-none-eabihf/release/szl $TARGET_HOST:$TARGET_FOLDER
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rsync build/top.bit $TARGET_HOST:$TARGET_FOLDER
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rsync build/top.bit $TARGET_HOST:$TARGET_FOLDER
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ssh $TARGET_HOST "cd $TARGET_FOLDER; openocd -f zc706.cfg -c 'pld load 0 top.bit; load_image runtime; resume 0; exit'"
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ssh $TARGET_HOST "cd $TARGET_FOLDER; openocd -f zc706.cfg -c 'pld load 0 top.bit; load_image szl; resume 0; exit'"
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Binary file not shown.
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@ -0,0 +1,18 @@
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use std::env;
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use std::fs::File;
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use std::io::Write;
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use std::path::PathBuf;
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fn main() {
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// Put the linker script somewhere the linker can find it
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let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap());
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File::create(out.join("link.x"))
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.unwrap()
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.write_all(include_bytes!("link.x"))
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.unwrap();
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println!("cargo:rustc-link-search={}", out.display());
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// Only re-run the build script when link.x is changed,
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// instead of when any part of the source code changes.
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println!("cargo:rerun-if-changed=link.x");
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}
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@ -0,0 +1,71 @@
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ENTRY(_boot_cores);
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STACK_SIZE = 0x8000;
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HEAP_SIZE = 0x1000000;
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/* Provide some defaults */
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PROVIDE(Reset = _boot_cores);
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PROVIDE(UndefinedInstruction = Reset);
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PROVIDE(SoftwareInterrupt = Reset);
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PROVIDE(PrefetchAbort = Reset);
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PROVIDE(DataAbort = Reset);
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PROVIDE(ReservedException = Reset);
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PROVIDE(IRQ = Reset);
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PROVIDE(FIQ = Reset);
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MEMORY
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{
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SDRAM : ORIGIN = 0x00100000, LENGTH = 0x1FF00000
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}
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SECTIONS
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{
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.text :
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{
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KEEP(*(.text.exceptions));
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*(.text.boot);
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*(.text .text.*);
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} > SDRAM
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.rodata : ALIGN(4)
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{
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*(.rodata .rodata.*);
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} > SDRAM
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.data : ALIGN(4)
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{
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*(.data .data.*);
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} > SDRAM
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.bss (NOLOAD) : ALIGN(0x4000)
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{
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/* Aligned to 16 kB */
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KEEP(*(.bss.l1_table));
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*(.bss .bss.*);
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. = ALIGN(4);
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} > SDRAM
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__bss_start = ADDR(.bss);
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__bss_end = ADDR(.bss) + SIZEOF(.bss);
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.heap (NOLOAD) : ALIGN(0x1000)
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{
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. += HEAP_SIZE;
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} > SDRAM
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__heap_start = ADDR(.heap);
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__heap_end = ADDR(.heap) + SIZEOF(.heap);
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.stack (NOLOAD) : ALIGN(0x1000)
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{
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. += STACK_SIZE;
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} > SDRAM
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__stack_end = ADDR(.stack);
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__stack_start = ADDR(.stack) + SIZEOF(.stack);
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/DISCARD/ :
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{
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/* Unused exception related info that only wastes space */
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*(.ARM.exidx);
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*(.ARM.exidx.*);
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*(.ARM.extab.*);
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}
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}
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@ -8,10 +8,7 @@ extern crate log;
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use core::{cmp, str};
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use core::{cmp, str};
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use log::info;
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use log::info;
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use libboard_zynq::{
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use libboard_zynq::timer::GlobalTimer;
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self as zynq, clocks::Clocks, clocks::source::{ClockSource, ArmPll, IoPll},
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timer::GlobalTimer,
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};
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use libsupport_zynq::{logger, ram};
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use libsupport_zynq::{logger, ram};
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mod proto;
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mod proto;
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@ -42,14 +39,7 @@ pub fn main_core0() {
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log::set_max_level(log::LevelFilter::Debug);
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log::set_max_level(log::LevelFilter::Debug);
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info!("NAR3 starting...");
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info!("NAR3 starting...");
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const CPU_FREQ: u32 = 800_000_000;
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ram::init_alloc_linker();
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ArmPll::setup(2 * CPU_FREQ);
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Clocks::set_cpu_freq(CPU_FREQ);
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IoPll::setup(1_000_000_000);
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libboard_zynq::stdio::drop_uart(); // reinitialize UART after clocking change
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let mut ddr = zynq::ddr::DdrRam::new();
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ram::init_alloc(&mut ddr);
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info!("Detected gateware: {}", identifier_read(&mut [0; 64]));
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info!("Detected gateware: {}", identifier_read(&mut [0; 64]));
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@ -34,6 +34,7 @@ in
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rustPlatform.rust.rustc
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rustPlatform.rust.rustc
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rustPlatform.rust.cargo
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rustPlatform.rust.cargo
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rustcSrc
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rustcSrc
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pkgs.clang_9
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pkgs.cacert
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pkgs.cacert
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pkgs.cargo-xbuild
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pkgs.cargo-xbuild
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@ -0,0 +1,17 @@
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[package]
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name = "szl"
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description = "Simple Zynq Loader"
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version = "0.1.0"
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authors = ["M-Labs"]
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edition = "2018"
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[features]
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target_zc706 = ["libboard_zynq/target_zc706", "libsupport_zynq/target_zc706"]
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default = ["target_zc706"]
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[dependencies]
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log = "0.4"
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cstr_core = { version = "0.2", default-features = false }
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libboard_zynq = { git = "https://git.m-labs.hk/M-Labs/zc706.git" }
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libsupport_zynq = { git = "https://git.m-labs.hk/M-Labs/zc706.git" }
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libcortex_a9 = { git = "https://git.m-labs.hk/M-Labs/zc706.git" }
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@ -0,0 +1,48 @@
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use std::process::Command;
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use std::env;
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use std::fs::File;
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use std::io::Write;
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use std::path::{Path, PathBuf};
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fn main() {
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// FIXME: this is dirty and unreliable. How to depend on the output of the runtime build?
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let payload = "../target/armv7-none-eabihf/release/runtime";
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let out = env::var("OUT_DIR").unwrap();
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let out_dir = &PathBuf::from(&out);
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let status = Command::new("llvm-objcopy")
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.args(&["-O", "binary", payload, &format!("{}/payload.bin", out)])
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.status().unwrap();
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assert!(status.success());
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let status = Command::new("lzma")
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.args(&["--keep", "-f", &format!("{}/payload.bin", out)])
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.status().unwrap();
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assert!(status.success());
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println!("cargo:rerun-if-changed={}", payload);
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let status = Command::new("clang")
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.args(&["-target", "armv7-unknown-linux", "-fno-stack-protector",
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"src/unlzma.c", "-O2", "-c", "-fPIC", "-o",
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&format!("{}/unlzma.o", out)])
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.status().unwrap();
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assert!(status.success());
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let status = Command::new("llvm-ar")
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.args(&["crus", "libunlzma.a", "unlzma.o"])
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.current_dir(&Path::new(&out))
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.status().unwrap();
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assert!(status.success());
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println!("cargo:rustc-link-search=native={}", out);
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println!("cargo:rustc-link-lib=static=unlzma");
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||||||
|
println!("cargo:rerun-if-changed=src/unlzma.c");
|
||||||
|
|
||||||
|
// Put the linker script somewhere the linker can find it
|
||||||
|
File::create(out_dir.join("link.x"))
|
||||||
|
.unwrap()
|
||||||
|
.write_all(include_bytes!("link.x"))
|
||||||
|
.unwrap();
|
||||||
|
println!("cargo:rustc-link-search={}", out_dir.display());
|
||||||
|
|
||||||
|
// Only re-run the build script when link.x is changed,
|
||||||
|
// instead of when any part of the source code changes.
|
||||||
|
println!("cargo:rerun-if-changed=link.x");
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,68 @@
|
||||||
|
#![no_std]
|
||||||
|
#![no_main]
|
||||||
|
|
||||||
|
extern crate log;
|
||||||
|
|
||||||
|
use core::mem;
|
||||||
|
use log::{info, error};
|
||||||
|
use cstr_core::CStr;
|
||||||
|
|
||||||
|
use libboard_zynq::{
|
||||||
|
self as zynq, clocks::Clocks, clocks::source::{ClockSource, ArmPll, IoPll},
|
||||||
|
timer::GlobalTimer,
|
||||||
|
};
|
||||||
|
use libsupport_zynq::{boot, logger};
|
||||||
|
|
||||||
|
|
||||||
|
static mut STACK_CORE1: [u32; 512] = [0; 512];
|
||||||
|
|
||||||
|
extern "C" {
|
||||||
|
fn unlzma_simple(buf: *const u8, in_len: i32,
|
||||||
|
output: *mut u8,
|
||||||
|
error: extern fn(*const u8)) -> i32;
|
||||||
|
}
|
||||||
|
|
||||||
|
extern fn lzma_error(message: *const u8) {
|
||||||
|
error!("LZMA error: {}", unsafe { CStr::from_ptr(message) }.to_str().unwrap());
|
||||||
|
}
|
||||||
|
|
||||||
|
#[no_mangle]
|
||||||
|
pub fn main_core0() {
|
||||||
|
GlobalTimer::start();
|
||||||
|
let _ = logger::init();
|
||||||
|
log::set_max_level(log::LevelFilter::Debug);
|
||||||
|
info!("Simple Zynq Loader starting");
|
||||||
|
|
||||||
|
const CPU_FREQ: u32 = 800_000_000;
|
||||||
|
|
||||||
|
ArmPll::setup(2 * CPU_FREQ);
|
||||||
|
Clocks::set_cpu_freq(CPU_FREQ);
|
||||||
|
IoPll::setup(1_000_000_000);
|
||||||
|
libboard_zynq::stdio::drop_uart(); // reinitialize UART after clocking change
|
||||||
|
let mut ddr = zynq::ddr::DdrRam::new();
|
||||||
|
|
||||||
|
let payload = include_bytes!(concat!(env!("OUT_DIR"), "/payload.bin.lzma"));
|
||||||
|
info!("decompressing payload");
|
||||||
|
let result = unsafe {
|
||||||
|
unlzma_simple(payload.as_ptr(), payload.len() as i32, ddr.ptr(), lzma_error)
|
||||||
|
};
|
||||||
|
if result < 0 {
|
||||||
|
error!("decompression failed");
|
||||||
|
} else {
|
||||||
|
let core1_stack = unsafe { &mut STACK_CORE1[..] };
|
||||||
|
boot::Core1::start(core1_stack);
|
||||||
|
info!("executing payload");
|
||||||
|
unsafe {
|
||||||
|
(mem::transmute::<*mut u8, fn()>(ddr.ptr::<u8>()))();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
loop {}
|
||||||
|
}
|
||||||
|
|
||||||
|
#[no_mangle]
|
||||||
|
pub fn main_core1() {
|
||||||
|
unsafe {
|
||||||
|
(mem::transmute::<u32, fn()>(0x00100000))();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,670 @@
|
||||||
|
/*
|
||||||
|
*Taken from: Lzma decompressor for Linux kernel. Shamelessly snarfed
|
||||||
|
*from busybox 1.1.1
|
||||||
|
*
|
||||||
|
*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
|
||||||
|
*
|
||||||
|
*Copyrights of the parts, see headers below.
|
||||||
|
*
|
||||||
|
*
|
||||||
|
*This program is free software; you can redistribute it and/or
|
||||||
|
*modify it under the terms of the GNU Lesser General Public
|
||||||
|
*License as published by the Free Software Foundation; either
|
||||||
|
*version 2.1 of the License, or (at your option) any later version.
|
||||||
|
*
|
||||||
|
*This program is distributed in the hope that it will be useful,
|
||||||
|
*but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
*MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||||
|
*Lesser General Public License for more details.
|
||||||
|
*
|
||||||
|
*You should have received a copy of the GNU Lesser General Public
|
||||||
|
*License along with this library; if not, write to the Free Software
|
||||||
|
*Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
||||||
|
*/
|
||||||
|
|
||||||
|
#define NULL ((void *)0)
|
||||||
|
#define alloca(size) __builtin_alloca(size)
|
||||||
|
#define malloc alloca
|
||||||
|
static inline void free(void *p) {}
|
||||||
|
|
||||||
|
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
|
||||||
|
|
||||||
|
static long long read_int(unsigned char *ptr, int size)
|
||||||
|
{
|
||||||
|
int i;
|
||||||
|
long long ret = 0;
|
||||||
|
|
||||||
|
for (i = 0; i < size; i++)
|
||||||
|
ret = (ret << 8) | ptr[size-i-1];
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
#define ENDIAN_CONVERT(x) \
|
||||||
|
x = (typeof(x))read_int((unsigned char *)&x, sizeof(x))
|
||||||
|
|
||||||
|
|
||||||
|
/* 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
|
||||||
|
*/
|
||||||
|
|
||||||
|
#define LZMA_IOBUF_SIZE 0x10000
|
||||||
|
|
||||||
|
struct rc {
|
||||||
|
int (*fill)(void*, unsigned int);
|
||||||
|
unsigned char *ptr;
|
||||||
|
unsigned char *buffer;
|
||||||
|
unsigned char *buffer_end;
|
||||||
|
int buffer_size;
|
||||||
|
unsigned int code;
|
||||||
|
unsigned int range;
|
||||||
|
unsigned int bound;
|
||||||
|
void (*error)(char *);
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
#define RC_TOP_BITS 24
|
||||||
|
#define RC_MOVE_BITS 5
|
||||||
|
#define RC_MODEL_TOTAL_BITS 11
|
||||||
|
|
||||||
|
|
||||||
|
static int nofill(void *buffer, unsigned int len)
|
||||||
|
{
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Called twice: once at startup and once in rc_normalize() */
|
||||||
|
static void rc_read(struct rc *rc)
|
||||||
|
{
|
||||||
|
rc->buffer_size = rc->fill((char *)rc->buffer, LZMA_IOBUF_SIZE);
|
||||||
|
if (rc->buffer_size <= 0)
|
||||||
|
rc->error("unexpected EOF");
|
||||||
|
rc->ptr = rc->buffer;
|
||||||
|
rc->buffer_end = rc->buffer + rc->buffer_size;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Called once */
|
||||||
|
static inline void rc_init(struct rc *rc,
|
||||||
|
int (*fill)(void*, unsigned int),
|
||||||
|
unsigned char *buffer, int buffer_size)
|
||||||
|
{
|
||||||
|
if (fill)
|
||||||
|
rc->fill = fill;
|
||||||
|
else
|
||||||
|
rc->fill = nofill;
|
||||||
|
rc->buffer = buffer;
|
||||||
|
rc->buffer_size = buffer_size;
|
||||||
|
rc->buffer_end = rc->buffer + rc->buffer_size;
|
||||||
|
rc->ptr = rc->buffer;
|
||||||
|
|
||||||
|
rc->code = 0;
|
||||||
|
rc->range = 0xFFFFFFFF;
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline void rc_init_code(struct rc *rc)
|
||||||
|
{
|
||||||
|
int i;
|
||||||
|
|
||||||
|
for (i = 0; i < 5; i++) {
|
||||||
|
if (rc->ptr >= rc->buffer_end)
|
||||||
|
rc_read(rc);
|
||||||
|
rc->code = (rc->code << 8) | *rc->ptr++;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/* Called twice, but one callsite is in inline'd rc_is_bit_0_helper() */
|
||||||
|
static void rc_do_normalize(struct rc *rc)
|
||||||
|
{
|
||||||
|
if (rc->ptr >= rc->buffer_end)
|
||||||
|
rc_read(rc);
|
||||||
|
rc->range <<= 8;
|
||||||
|
rc->code = (rc->code << 8) | *rc->ptr++;
|
||||||
|
}
|
||||||
|
static inline void rc_normalize(struct rc *rc)
|
||||||
|
{
|
||||||
|
if (rc->range < (1 << RC_TOP_BITS))
|
||||||
|
rc_do_normalize(rc);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Called 9 times */
|
||||||
|
/* Why rc_is_bit_0_helper exists?
|
||||||
|
*Because we want to always expose (rc->code < rc->bound) to optimizer
|
||||||
|
*/
|
||||||
|
static inline unsigned int rc_is_bit_0_helper(struct rc *rc, unsigned short int *p)
|
||||||
|
{
|
||||||
|
rc_normalize(rc);
|
||||||
|
rc->bound = *p * (rc->range >> RC_MODEL_TOTAL_BITS);
|
||||||
|
return rc->bound;
|
||||||
|
}
|
||||||
|
static inline int rc_is_bit_0(struct rc *rc, unsigned short int *p)
|
||||||
|
{
|
||||||
|
unsigned int t = rc_is_bit_0_helper(rc, p);
|
||||||
|
return rc->code < t;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Called ~10 times, but very small, thus inlined */
|
||||||
|
static inline void rc_update_bit_0(struct rc *rc, unsigned short int *p)
|
||||||
|
{
|
||||||
|
rc->range = rc->bound;
|
||||||
|
*p += ((1 << RC_MODEL_TOTAL_BITS) - *p) >> RC_MOVE_BITS;
|
||||||
|
}
|
||||||
|
static inline void rc_update_bit_1(struct rc *rc, unsigned short int *p)
|
||||||
|
{
|
||||||
|
rc->range -= rc->bound;
|
||||||
|
rc->code -= rc->bound;
|
||||||
|
*p -= *p >> RC_MOVE_BITS;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Called 4 times in unlzma loop */
|
||||||
|
static int rc_get_bit(struct rc *rc, unsigned short int *p, int *symbol)
|
||||||
|
{
|
||||||
|
if (rc_is_bit_0(rc, p)) {
|
||||||
|
rc_update_bit_0(rc, p);
|
||||||
|
*symbol *= 2;
|
||||||
|
return 0;
|
||||||
|
} else {
|
||||||
|
rc_update_bit_1(rc, p);
|
||||||
|
*symbol = *symbol * 2 + 1;
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Called once */
|
||||||
|
static inline int rc_direct_bit(struct rc *rc)
|
||||||
|
{
|
||||||
|
rc_normalize(rc);
|
||||||
|
rc->range >>= 1;
|
||||||
|
if (rc->code >= rc->range) {
|
||||||
|
rc->code -= rc->range;
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Called twice */
|
||||||
|
static inline void
|
||||||
|
rc_bit_tree_decode(struct rc *rc, unsigned short int *p, int num_levels, int *symbol)
|
||||||
|
{
|
||||||
|
int i = num_levels;
|
||||||
|
|
||||||
|
*symbol = 1;
|
||||||
|
while (i--)
|
||||||
|
rc_get_bit(rc, p + *symbol, symbol);
|
||||||
|
*symbol -= 1 << num_levels;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Small lzma deflate implementation.
|
||||||
|
* 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
|
||||||
|
*/
|
||||||
|
|
||||||
|
|
||||||
|
struct lzma_header {
|
||||||
|
unsigned char pos;
|
||||||
|
unsigned int dict_size;
|
||||||
|
unsigned long long int dst_size;
|
||||||
|
} __attribute__ ((packed)) ;
|
||||||
|
|
||||||
|
|
||||||
|
#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)
|
||||||
|
|
||||||
|
|
||||||
|
struct writer {
|
||||||
|
unsigned char *buffer;
|
||||||
|
unsigned char previous_byte;
|
||||||
|
int buffer_pos;
|
||||||
|
int bufsize;
|
||||||
|
int global_pos;
|
||||||
|
int(*flush)(void*, unsigned int);
|
||||||
|
struct lzma_header *header;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct cstate {
|
||||||
|
int state;
|
||||||
|
unsigned int rep0, rep1, rep2, rep3;
|
||||||
|
};
|
||||||
|
|
||||||
|
static inline int get_pos(struct writer *wr)
|
||||||
|
{
|
||||||
|
return
|
||||||
|
wr->global_pos + wr->buffer_pos;
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline unsigned char peek_old_byte(struct writer *wr,
|
||||||
|
unsigned int offs)
|
||||||
|
{
|
||||||
|
if (!wr->flush) {
|
||||||
|
int pos;
|
||||||
|
while (offs > wr->header->dict_size)
|
||||||
|
offs -= wr->header->dict_size;
|
||||||
|
pos = wr->buffer_pos - offs;
|
||||||
|
return wr->buffer[pos];
|
||||||
|
} else {
|
||||||
|
unsigned int pos = wr->buffer_pos - offs;
|
||||||
|
while (pos >= wr->header->dict_size)
|
||||||
|
pos += wr->header->dict_size;
|
||||||
|
return wr->buffer[pos];
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline int write_byte(struct writer *wr, unsigned char byte)
|
||||||
|
{
|
||||||
|
wr->buffer[wr->buffer_pos++] = wr->previous_byte = byte;
|
||||||
|
if (wr->flush && wr->buffer_pos == wr->header->dict_size) {
|
||||||
|
wr->buffer_pos = 0;
|
||||||
|
wr->global_pos += wr->header->dict_size;
|
||||||
|
if (wr->flush((char *)wr->buffer, wr->header->dict_size)
|
||||||
|
!= wr->header->dict_size)
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
static inline int copy_byte(struct writer *wr, unsigned int offs)
|
||||||
|
{
|
||||||
|
return write_byte(wr, peek_old_byte(wr, offs));
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline int copy_bytes(struct writer *wr,
|
||||||
|
unsigned int rep0, int len)
|
||||||
|
{
|
||||||
|
do {
|
||||||
|
if (copy_byte(wr, rep0))
|
||||||
|
return -1;
|
||||||
|
len--;
|
||||||
|
} while (len != 0 && wr->buffer_pos < wr->header->dst_size);
|
||||||
|
|
||||||
|
return len;
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline int process_bit0(struct writer *wr, struct rc *rc,
|
||||||
|
struct cstate *cst, unsigned short int *p,
|
||||||
|
int pos_state, unsigned short int *prob,
|
||||||
|
int lc, unsigned int literal_pos_mask) {
|
||||||
|
int mi = 1;
|
||||||
|
rc_update_bit_0(rc, prob);
|
||||||
|
prob = (p + LZMA_LITERAL +
|
||||||
|
(LZMA_LIT_SIZE
|
||||||
|
* (((get_pos(wr) & literal_pos_mask) << lc)
|
||||||
|
+ (wr->previous_byte >> (8 - lc))))
|
||||||
|
);
|
||||||
|
|
||||||
|
if (cst->state >= LZMA_NUM_LIT_STATES) {
|
||||||
|
int match_byte = peek_old_byte(wr, cst->rep0);
|
||||||
|
do {
|
||||||
|
int bit;
|
||||||
|
unsigned short int *prob_lit;
|
||||||
|
|
||||||
|
match_byte <<= 1;
|
||||||
|
bit = match_byte & 0x100;
|
||||||
|
prob_lit = prob + 0x100 + bit + mi;
|
||||||
|
if (rc_get_bit(rc, prob_lit, &mi)) {
|
||||||
|
if (!bit)
|
||||||
|
break;
|
||||||
|
} else {
|
||||||
|
if (bit)
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
} while (mi < 0x100);
|
||||||
|
}
|
||||||
|
while (mi < 0x100) {
|
||||||
|
unsigned short int *prob_lit = prob + mi;
|
||||||
|
rc_get_bit(rc, prob_lit, &mi);
|
||||||
|
}
|
||||||
|
if (cst->state < 4)
|
||||||
|
cst->state = 0;
|
||||||
|
else if (cst->state < 10)
|
||||||
|
cst->state -= 3;
|
||||||
|
else
|
||||||
|
cst->state -= 6;
|
||||||
|
|
||||||
|
return write_byte(wr, mi);
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline int process_bit1(struct writer *wr, struct rc *rc,
|
||||||
|
struct cstate *cst, unsigned short int *p,
|
||||||
|
int pos_state, unsigned short int *prob) {
|
||||||
|
int offset;
|
||||||
|
unsigned short int *prob_len;
|
||||||
|
int num_bits;
|
||||||
|
int len;
|
||||||
|
|
||||||
|
rc_update_bit_1(rc, prob);
|
||||||
|
prob = p + LZMA_IS_REP + cst->state;
|
||||||
|
if (rc_is_bit_0(rc, prob)) {
|
||||||
|
rc_update_bit_0(rc, prob);
|
||||||
|
cst->rep3 = cst->rep2;
|
||||||
|
cst->rep2 = cst->rep1;
|
||||||
|
cst->rep1 = cst->rep0;
|
||||||
|
cst->state = cst->state < LZMA_NUM_LIT_STATES ? 0 : 3;
|
||||||
|
prob = p + LZMA_LEN_CODER;
|
||||||
|
} else {
|
||||||
|
rc_update_bit_1(rc, prob);
|
||||||
|
prob = p + LZMA_IS_REP_G0 + cst->state;
|
||||||
|
if (rc_is_bit_0(rc, prob)) {
|
||||||
|
rc_update_bit_0(rc, prob);
|
||||||
|
prob = (p + LZMA_IS_REP_0_LONG
|
||||||
|
+ (cst->state <<
|
||||||
|
LZMA_NUM_POS_BITS_MAX) +
|
||||||
|
pos_state);
|
||||||
|
if (rc_is_bit_0(rc, prob)) {
|
||||||
|
rc_update_bit_0(rc, prob);
|
||||||
|
|
||||||
|
cst->state = cst->state < LZMA_NUM_LIT_STATES ?
|
||||||
|
9 : 11;
|
||||||
|
return copy_byte(wr, cst->rep0);
|
||||||
|
} else {
|
||||||
|
rc_update_bit_1(rc, prob);
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
unsigned int distance;
|
||||||
|
|
||||||
|
rc_update_bit_1(rc, prob);
|
||||||
|
prob = p + LZMA_IS_REP_G1 + cst->state;
|
||||||
|
if (rc_is_bit_0(rc, prob)) {
|
||||||
|
rc_update_bit_0(rc, prob);
|
||||||
|
distance = cst->rep1;
|
||||||
|
} else {
|
||||||
|
rc_update_bit_1(rc, prob);
|
||||||
|
prob = p + LZMA_IS_REP_G2 + cst->state;
|
||||||
|
if (rc_is_bit_0(rc, prob)) {
|
||||||
|
rc_update_bit_0(rc, prob);
|
||||||
|
distance = cst->rep2;
|
||||||
|
} else {
|
||||||
|
rc_update_bit_1(rc, prob);
|
||||||
|
distance = cst->rep3;
|
||||||
|
cst->rep3 = cst->rep2;
|
||||||
|
}
|
||||||
|
cst->rep2 = cst->rep1;
|
||||||
|
}
|
||||||
|
cst->rep1 = cst->rep0;
|
||||||
|
cst->rep0 = distance;
|
||||||
|
}
|
||||||
|
cst->state = cst->state < LZMA_NUM_LIT_STATES ? 8 : 11;
|
||||||
|
prob = p + LZMA_REP_LEN_CODER;
|
||||||
|
}
|
||||||
|
|
||||||
|
prob_len = prob + LZMA_LEN_CHOICE;
|
||||||
|
if (rc_is_bit_0(rc, prob_len)) {
|
||||||
|
rc_update_bit_0(rc, 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(rc, prob_len);
|
||||||
|
prob_len = prob + LZMA_LEN_CHOICE_2;
|
||||||
|
if (rc_is_bit_0(rc, prob_len)) {
|
||||||
|
rc_update_bit_0(rc, 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(rc, 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(rc, prob_len, num_bits, &len);
|
||||||
|
len += offset;
|
||||||
|
|
||||||
|
if (cst->state < 4) {
|
||||||
|
int pos_slot;
|
||||||
|
|
||||||
|
cst->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(rc, 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;
|
||||||
|
cst->rep0 = 2 | (pos_slot & 1);
|
||||||
|
if (pos_slot < LZMA_END_POS_MODEL_INDEX) {
|
||||||
|
cst->rep0 <<= num_bits;
|
||||||
|
prob = p + LZMA_SPEC_POS +
|
||||||
|
cst->rep0 - pos_slot - 1;
|
||||||
|
} else {
|
||||||
|
num_bits -= LZMA_NUM_ALIGN_BITS;
|
||||||
|
while (num_bits--)
|
||||||
|
cst->rep0 = (cst->rep0 << 1) |
|
||||||
|
rc_direct_bit(rc);
|
||||||
|
prob = p + LZMA_ALIGN;
|
||||||
|
cst->rep0 <<= LZMA_NUM_ALIGN_BITS;
|
||||||
|
num_bits = LZMA_NUM_ALIGN_BITS;
|
||||||
|
}
|
||||||
|
i = 1;
|
||||||
|
mi = 1;
|
||||||
|
while (num_bits--) {
|
||||||
|
if (rc_get_bit(rc, prob + mi, &mi))
|
||||||
|
cst->rep0 |= i;
|
||||||
|
i <<= 1;
|
||||||
|
}
|
||||||
|
} else
|
||||||
|
cst->rep0 = pos_slot;
|
||||||
|
if (++(cst->rep0) == 0)
|
||||||
|
return 0;
|
||||||
|
if (cst->rep0 > wr->header->dict_size
|
||||||
|
|| cst->rep0 > get_pos(wr))
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
len += LZMA_MATCH_MIN_LEN;
|
||||||
|
|
||||||
|
return copy_bytes(wr, cst->rep0, len);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
int unlzma(unsigned char *buf, int in_len,
|
||||||
|
int(*fill)(void*, unsigned int),
|
||||||
|
int(*flush)(void*, unsigned int),
|
||||||
|
unsigned char *output,
|
||||||
|
int *posp,
|
||||||
|
void(*error)(char *x)
|
||||||
|
)
|
||||||
|
{
|
||||||
|
struct lzma_header header;
|
||||||
|
int lc, pb, lp;
|
||||||
|
unsigned int pos_state_mask;
|
||||||
|
unsigned int literal_pos_mask;
|
||||||
|
unsigned short int *p;
|
||||||
|
int num_probs;
|
||||||
|
struct rc rc;
|
||||||
|
int i, mi;
|
||||||
|
struct writer wr;
|
||||||
|
struct cstate cst;
|
||||||
|
unsigned char *inbuf;
|
||||||
|
int ret = -1;
|
||||||
|
|
||||||
|
rc.error = error;
|
||||||
|
|
||||||
|
if (buf)
|
||||||
|
inbuf = buf;
|
||||||
|
else
|
||||||
|
inbuf = malloc(LZMA_IOBUF_SIZE);
|
||||||
|
if (!inbuf) {
|
||||||
|
error("Could not allocate input bufer");
|
||||||
|
goto exit_0;
|
||||||
|
}
|
||||||
|
|
||||||
|
cst.state = 0;
|
||||||
|
cst.rep0 = cst.rep1 = cst.rep2 = cst.rep3 = 1;
|
||||||
|
|
||||||
|
wr.header = &header;
|
||||||
|
wr.flush = flush;
|
||||||
|
wr.global_pos = 0;
|
||||||
|
wr.previous_byte = 0;
|
||||||
|
wr.buffer_pos = 0;
|
||||||
|
|
||||||
|
rc_init(&rc, fill, inbuf, in_len);
|
||||||
|
|
||||||
|
for (i = 0; i < sizeof(header); i++) {
|
||||||
|
if (rc.ptr >= rc.buffer_end)
|
||||||
|
rc_read(&rc);
|
||||||
|
((unsigned char *)&header)[i] = *rc.ptr++;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (header.pos >= (9 * 5 * 5)) {
|
||||||
|
error("bad header");
|
||||||
|
goto exit_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;
|
||||||
|
|
||||||
|
ENDIAN_CONVERT(header.dict_size);
|
||||||
|
ENDIAN_CONVERT(header.dst_size);
|
||||||
|
|
||||||
|
if (header.dict_size == 0)
|
||||||
|
header.dict_size = 1;
|
||||||
|
|
||||||
|
if (output)
|
||||||
|
wr.buffer = output;
|
||||||
|
else {
|
||||||
|
wr.bufsize = MIN(header.dst_size, header.dict_size);
|
||||||
|
wr.buffer = malloc(wr.bufsize);
|
||||||
|
}
|
||||||
|
if (wr.buffer == NULL)
|
||||||
|
goto exit_1;
|
||||||
|
|
||||||
|
num_probs = LZMA_BASE_SIZE + (LZMA_LIT_SIZE << (lc + lp));
|
||||||
|
p = (unsigned short int *) malloc(num_probs * sizeof(*p));
|
||||||
|
if (p == 0)
|
||||||
|
goto exit_2;
|
||||||
|
num_probs = LZMA_LITERAL + (LZMA_LIT_SIZE << (lc + lp));
|
||||||
|
for (i = 0; i < num_probs; i++)
|
||||||
|
p[i] = (1 << RC_MODEL_TOTAL_BITS) >> 1;
|
||||||
|
|
||||||
|
rc_init_code(&rc);
|
||||||
|
|
||||||
|
while (get_pos(&wr) < header.dst_size) {
|
||||||
|
int pos_state = get_pos(&wr) & pos_state_mask;
|
||||||
|
unsigned short int *prob = p + LZMA_IS_MATCH +
|
||||||
|
(cst.state << LZMA_NUM_POS_BITS_MAX) + pos_state;
|
||||||
|
if (rc_is_bit_0(&rc, prob)) {
|
||||||
|
if (process_bit0(&wr, &rc, &cst, p, pos_state, prob,
|
||||||
|
lc, literal_pos_mask)) {
|
||||||
|
error("LZMA data is corrupt");
|
||||||
|
goto exit_3;
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
if (process_bit1(&wr, &rc, &cst, p, pos_state, prob)) {
|
||||||
|
error("LZMA data is corrupt");
|
||||||
|
goto exit_3;
|
||||||
|
}
|
||||||
|
if (cst.rep0 == 0)
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
if (rc.buffer_size <= 0)
|
||||||
|
goto exit_3;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (posp)
|
||||||
|
*posp = rc.ptr-rc.buffer;
|
||||||
|
if (!wr.flush || wr.flush(wr.buffer, wr.buffer_pos) == wr.buffer_pos)
|
||||||
|
ret = 0;
|
||||||
|
exit_3:
|
||||||
|
free(p);
|
||||||
|
exit_2:
|
||||||
|
if (!output)
|
||||||
|
free(wr.buffer);
|
||||||
|
exit_1:
|
||||||
|
if (!buf)
|
||||||
|
free(inbuf);
|
||||||
|
exit_0:
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
int unlzma_simple(unsigned char *buf, int in_len,
|
||||||
|
unsigned char *output,
|
||||||
|
void(*error)(char *x))
|
||||||
|
{
|
||||||
|
return unlzma(buf, in_len, NULL, NULL, output, NULL, error);
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue