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https://github.com/upx/upx
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Hacking convert v4a/lzma_d-arm.S from 32-bit to 64-bit
This commit is contained in:
John Reiser
parent
16241d010f
commit
fa522c0ffc
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@ -1,471 +1,150 @@
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rcGetBit.2736:
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mov w3, 16777215
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cmp w28, w3
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bhi .L2
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ldp x4, x3, [x18]
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cmp x3, x4
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beq .L5
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add x4, x3, 1
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str x4, [x18, 8]
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lsl w28, w28, 8
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ldrb w2, [x3]
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orr w27, w2, w27, lsl 8
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.L2:
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ldrh w3, [x1]
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lsr w2, w28, 11
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mul w2, w2, w3
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cmp w2, w27
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bhi .L7
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lsl w0, w0, 1
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sub w3, w3, w3, lsr 5
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sub w27, w27, w2
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sub w28, w28, w2
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strh w3, [x1]
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add w0, w0, 1
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ret
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.L7:
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mov w4, 2048
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mov w28, w2
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sub w2, w4, w3
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lsl w0, w0, 1
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add w3, w3, w2, asr 5
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strh w3, [x1]
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ret
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.L5:
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mov w0, 1
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ret
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/* lzma_d.S -- ARM decompressor for LZMA
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LzmaDecodeProperties:
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cmp w2, 4
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ble .L14
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ldrb w1, [x1]
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mov w2, 1
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cmp w1, 224
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bhi .L9
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cmp w1, 44
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str wzr, [x0, 8]
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bls .L10
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mov w2, 0
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.L11:
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sub w1, w1, #45
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add w2, w2, 1
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uxtb w1, w1
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cmp w1, 44
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bhi .L11
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str w2, [x0, 8]
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.L10:
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cmp w1, 8
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str wzr, [x0, 4]
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bls .L12
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mov w2, 1
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.L13:
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sub w1, w1, #9
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mov w3, w2
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add w2, w2, 1
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uxtb w1, w1
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cmp w1, 8
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bhi .L13
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str w3, [x0, 4]
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.L12:
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mov w2, 0
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str w1, [x0]
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.L9:
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mov w0, w2
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ret
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.L14:
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mov w2, 1
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mov w0, w2
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ret
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This file is part of the UPX executable compressor.
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Copyright (C) 1996-2015 Markus Franz Xaver Johannes Oberhumer
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Copyright (C) 1996-2015 Laszlo Molnar
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Copyright (C) 2000-2015 John F. Reiser
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All Rights Reserved.
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UPX and the UCL library are free software; you can redistribute them
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and/or modify them under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of
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the License, or (at your option) any later version.
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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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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING.
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If not, write to the Free Software Foundation, Inc.,
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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Markus F.X.J. Oberhumer Laszlo Molnar
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<markus@oberhumer.com> <ml1050@users.sourceforge.net>
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John F. Reiser
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<jreiser@users.sourceforge.net>
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*/
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#define section .section
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section LZMA_ELF00
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//decompress: // (uchar const *src, size_t lsrc, uchar *dst, u32 &ldst, uint method)
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/* Arguments according to calling convention */
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#define src x0
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#define lsrc w1
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#define dst x2
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#define ldst x3 /* Out: actually a reference: &len_dst */
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#define meth w4
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// bkpt // debugging
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#define M_LZMA 14
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cmp meth,#M_LZMA; bne not_lzma
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#if defined(LINUX_ARM_CACHEFLUSH)||defined(DARWIN_ARM_CACHEFLUSH) /*{*/
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PUSH4(dst,ldst, fp,lr) // dst,ldst for cache flush
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#else /*}{*/
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PUSH2( fp,lr)
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#endif /*}*/
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#define a0 x0
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#define a1 x1
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#define a2 w2
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#define a3 x3
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#define a4 x4 /* outp */
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#define a5 w5 /* outSize */
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#define a6 x6 /* &outSizeProcessed */
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#define inSzP 3*4 /* inSizeprocessed */
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#define State 4*4 /* CLzmaDecoderState */
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#define t0 w7
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#define t1 w8
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#define t1x x8
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//LzmaDecode( // from lzmaSDK/C/7zip/Compress/LZMA_C/LzmaDecode.h
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// a0= &CLzmaDecoderState,
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// a1= inp, a2= inSize, a3= &inSizeProcessed,
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// a4= outp, a5= outSize, a6= &outSizeProcessed
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//)
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#define LZMA_BASE_SIZE 1846
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#define LZMA_LIT_SIZE 768
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ldrb t0,[src,#0] // first byte, replaces LzmaDecodeProperties()
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mov t1,#2*LZMA_LIT_SIZE
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lsr t0,t0,#3 // lit_context_bits + lit_pos_bits
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lsl t1,t1,t0 // 2*LZMA_LIT_SIZE << (lit_context_bits + lit_pos_bits)
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mov t0,sp
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#define W 4 /* even #bits to round up so that 8 bits span all the 1's */
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add t1,t1,#((~(~0<<W) + State + 2*LZMA_BASE_SIZE)>>W)<<W
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sub sp,sp,t1 // alloca
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ldr t1,[ldst]
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str ldst,a6 // &outSizeProcessed
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str t1, a5 // outSize
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str dst, a4 // outp
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add r3,sp,#inSzP
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mov t1x,#0
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1: // clear inSizeProcessed and CLzmaDecoderState
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str t1x,[r3],#8
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cmp r3,t0
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blo 1b
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add a3,sp,#inSzP // &inSizeProcessed
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sub a2,lsrc,#2 // inSize
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mov a1, src // inp
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ldrb t1,[a1],#1 // first byte, replaces LzmaDecodeProperties()
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and t1,t1,#7 // posBits
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strb t1,[sp,#2 + State]
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ldrb t1,[a1],#1 // second byte, replaces LzmaDecodeProperties()
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mov a0,t1,LSR #4 // lit_pos_bits
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strb a0,[sp,#1 + State]
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and t1,t1,#0xf // lib_context_bits
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strb t1,[sp,#0 + State]
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add a0,sp,#State
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bl 1f // the call
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mov sp,t0 // un-alloca
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#if defined(LINUX_ARM_CACHEFLUSH) /*{*/
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mov w3,w0 // save result value
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POP2(x0,x1) // dst, ldst
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ldr x1,[x1] // ldst by reference
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add x1,x1,x0 // just beyond what was written
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mov w2,#0
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do_sys2 __ARM_NR_cacheflush // decompressed region
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mov x0,x3 // result value
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#endif /*}*/
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#if defined(DARWIN_ARM_CACHEFLUSH) /*{*/
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mov w4,w0 // save result value
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POP2(x0,x1) // dst, ldst
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ldr x1,[x1] // ldst by reference
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PUSH2(x0,x1); do_dcache_flush
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POP2 (x0,x1); do_icache_invalidate
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mov x0,x4 // result value
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#endif /*}*/
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POP {fp,pc}
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1:
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section LZMA_DEC20
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#include "lzma_d_cf.S"
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section LZMA_DEC10
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#if 0 /*{*/
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#include "lzma_d_cs.S"
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#else /*}{*/
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#define PARAMETER_STYLE 3
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#include "lzma_d-arm.S"
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#endif /*}*/
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section LZMA_DEC30
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not_lzma:
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// vi:ts=8:et
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LzmaDecode:
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stp x29, x30, [sp, -112]!
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mov w8, 1024
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add x29, sp, 0
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stp x19, x20, [sp, 16]
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stp x21, x22, [sp, 32]
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stp x23, x24, [sp, 48]
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stp x25, x26, [sp, 64]
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ldp w19, w15, [x0]
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ldr w14, [x0, 8]
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ldr x11, [x0, 16]
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str wzr, [x3]
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str wzr, [x6]
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ldr w7, [x0, 4]
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mov w0, 768
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add w7, w19, w7
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lsl w7, w0, w7
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mov w0, 1
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adds w7, w7, 1846
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lsl w14, w0, w14
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lsl w0, w0, w15
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sub w14, w14, #1
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sub w15, w0, #1
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mov x0, 0
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beq .L22
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.L79:
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strh w8, [x11, x0, lsl 1]
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add x0, x0, 1
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cmp w7, w0
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bhi .L79
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.L22:
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add x2, x1, x2, uxtw
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mov w27, 0
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str x2, [x29, 96]
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mov w28, -1
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add x0, x1, 1
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add x10, x1, 6
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add x2, x2, 1
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.L20:
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cmp x0, x2
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mov x8, x0
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beq .L41
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str x0, [x29, 104]
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add x0, x0, 1
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cmp x0, x10
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ldrb w7, [x0, -2]
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orr w27, w7, w27, lsl 8
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bne .L20
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stp x1, x6, [x29, 80]
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mov x9, x4
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mov x25, x3
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cbz w5, .L63
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mov w23, 1
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mov w26, 8
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mov w22, w23
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mov w21, w23
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mov w7, w23
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mov w10, 0
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mov w13, 0
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mov w6, 0
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sub w20, w26, w19
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.L60:
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and w12, w14, w6
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lsl w8, w10, 4
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add x18, x29, 96
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mov w0, 0
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sxtw x1, w12
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add x8, x1, x8, sxtw
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lsl x8, x8, 1
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add x1, x11, x8
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bl rcGetBit.2736
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cbnz w0, .L26
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and w0, w15, w6
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asr w8, w13, w20
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lsl w0, w0, w19
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cmp w10, 6
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add w8, w0, w8
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lsl w0, w8, 2
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sub w8, w0, w8
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ubfiz x8, x8, 8, 24
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add x8, x8, 1846
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add x8, x11, x8, lsl 1
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ble .L64
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sub w0, w6, w7
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mov w2, 1
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ldrb w12, [x9, x0]
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b .L32
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.L96:
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cbnz w13, .L29
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.L30:
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cmp w2, 255
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bgt .L31
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.L32:
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lsl w12, w12, 1
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mov w0, w2
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and w13, w12, 256
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add x18, x29, 96
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sxtw x1, w13
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add x1, x1, 256
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add x1, x1, x2, sxtw
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add x1, x8, x1, lsl 1
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bl rcGetBit.2736
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mov w2, w0
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tbz x2, 0, .L96
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cbnz w13, .L30
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.L29:
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cmp w2, 255
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bgt .L31
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.L33:
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add x1, x8, x2, sxtw 1
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mov w0, w2
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add x18, x29, 96
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bl rcGetBit.2736
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cmp w0, 255
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mov w2, w0
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ble .L33
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uxtb w13, w0
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cmp w10, 3
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strb w13, [x9, w6, uxtw]
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add w6, w6, 1
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bgt .L62
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mov w10, 0
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.L34:
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cmp w5, w6
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bhi .L60
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.L58:
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mov w1, 16777215
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cmp w28, w1
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bhi .L97
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ldp x2, x1, [x29, 96]
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cmp x1, x2
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beq .L41
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add x8, x1, 1
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str x8, [x29, 104]
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lsl w28, w28, 8
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ldrb w0, [x1]
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orr w27, w0, w27, lsl 8
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.L25:
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ldr x0, [x29, 80]
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ldp x19, x20, [sp, 16]
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sub x8, x8, x0
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ldr x0, [x29, 88]
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str w8, [x25]
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ldp x21, x22, [sp, 32]
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str w6, [x0]
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mov w0, 0
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ldp x23, x24, [sp, 48]
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ldp x25, x26, [sp, 64]
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ldp x29, x30, [sp], 112
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ret
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.L64:
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mov w2, 1
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b .L33
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.L31:
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uxtb w13, w2
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strb w13, [x9, w6, uxtw]
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add w6, w6, 1
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.L62:
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cmp w10, 9
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bgt .L35
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sub w10, w10, #3
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b .L34
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.L26:
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sxtw x13, w10
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add x18, x29, 96
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add x13, x13, 192
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mov w0, 0
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lsl x13, x13, 1
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add x1, x11, x13
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bl rcGetBit.2736
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cbnz w0, .L36
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mov w0, 3
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cmp w10, 6
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mov w23, w22
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csel w10, w0, wzr, gt
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mov w22, w21
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add x24, x11, 1636
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mov w21, w7
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.L38:
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add x18, x29, 96
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mov x1, x24
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mov w0, 0
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bl rcGetBit.2736
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cbnz w0, .L44
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lsl w12, w12, 3
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mov w8, -8
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mov w13, 3
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sxtw x12, w12
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add x12, x12, 2
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add x12, x24, x12, lsl 1
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.L45:
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mov w0, 1
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.L47:
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add x18, x29, 96
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add x1, x12, x0, uxtw 1
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bl rcGetBit.2736
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subs w13, w13, #1
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bne .L47
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cmp w10, 3
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add w8, w0, w8
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bgt .L48
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mov w7, 3
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mov w12, 6
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cmp w8, w7
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mov w0, 1
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csel w7, w8, w7, le
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lsl w7, w7, 6
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sxtw x7, w7
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add x7, x7, 432
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lsl x7, x7, 1
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.L49:
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add x1, x7, x0, uxtw 1
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add x18, x29, 96
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add x1, x11, x1
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bl rcGetBit.2736
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subs w12, w12, #1
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bne .L49
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sub w7, w0, #64
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add w10, w10, 7
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cmp w7, 3
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mov w12, w7
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ble .L50
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cmp w7, 13
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and w0, w7, 1
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asr w1, w7, 1
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orr w7, w0, 2
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bgt .L51
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sub w13, w1, #1
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mov x0, 688
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lsl w7, w7, w13
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sub x12, x0, x12, sxtw
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add x12, x12, x7, uxtw
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add x12, x11, x12, lsl 1
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sub x12, x12, #2
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.L52:
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mov w0, 1
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mov w24, w0
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.L57:
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add x1, x12, x0, sxtw 1
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add x18, x29, 96
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bl rcGetBit.2736
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and w3, w0, 1
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orr w1, w7, w24
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cmp w3, wzr
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csel w7, w1, w7, ne
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subs w13, w13, #1
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lsl w24, w24, 1
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bne .L57
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||||
.L50:
|
||||
adds w7, w7, 1
|
||||
beq .L58
|
||||
.L48:
|
||||
cmp w7, w6
|
||||
add w0, w8, 2
|
||||
bhi .L41
|
||||
mov w1, w6
|
||||
.L59:
|
||||
sub w2, w6, w7
|
||||
sub w0, w0, #1
|
||||
add w6, w6, 1
|
||||
cmp w0, wzr
|
||||
ccmp w5, w6, 0, ne
|
||||
ldrb w13, [x9, x2]
|
||||
strb w13, [x9, w1, uxtw]
|
||||
mov w1, w6
|
||||
bhi .L59
|
||||
b .L34
|
||||
.L35:
|
||||
sub w10, w10, #6
|
||||
b .L34
|
||||
.L36:
|
||||
add x1, x13, 24
|
||||
add x18, x29, 96
|
||||
add x1, x11, x1
|
||||
mov w0, 0
|
||||
bl rcGetBit.2736
|
||||
cbnz w0, .L39
|
||||
add x1, x8, 480
|
||||
add x18, x29, 96
|
||||
add x1, x11, x1
|
||||
bl rcGetBit.2736
|
||||
cbnz w0, .L67
|
||||
cbz w6, .L41
|
||||
sub w0, w6, w7
|
||||
cmp w10, 6
|
||||
mov w10, 11
|
||||
ldrb w13, [x9, x0]
|
||||
mov w0, 9
|
||||
strb w13, [x9, w6, uxtw]
|
||||
csel w10, w10, w0, gt
|
||||
add w6, w6, 1
|
||||
b .L34
|
||||
.L44:
|
||||
add x18, x29, 96
|
||||
add x1, x24, 2
|
||||
mov w0, 0
|
||||
bl rcGetBit.2736
|
||||
mov w8, w0
|
||||
cbnz w0, .L46
|
||||
lsl w0, w12, 3
|
||||
mov w13, 3
|
||||
sxtw x0, w0
|
||||
add x0, x0, 130
|
||||
add x12, x24, x0, lsl 1
|
||||
b .L45
|
||||
.L39:
|
||||
add x1, x13, 48
|
||||
add x18, x29, 96
|
||||
add x1, x11, x1
|
||||
mov w0, 0
|
||||
bl rcGetBit.2736
|
||||
cbnz w0, .L98
|
||||
.L40:
|
||||
cmp w10, 6
|
||||
mov w0, w7
|
||||
mov w10, 11
|
||||
mov w7, w21
|
||||
csel w10, w10, w26, gt
|
||||
mov w21, w0
|
||||
add x24, x11, 2664
|
||||
b .L38
|
||||
.L46:
|
||||
add x12, x24, 516
|
||||
mov w8, -240
|
||||
mov w13, 8
|
||||
b .L45
|
||||
.L41:
|
||||
ldp x19, x20, [sp, 16]
|
||||
ldp x21, x22, [sp, 32]
|
||||
ldp x23, x24, [sp, 48]
|
||||
ldp x25, x26, [sp, 64]
|
||||
mov w0, 1
|
||||
ldp x29, x30, [sp], 112
|
||||
ret
|
||||
.L51:
|
||||
ldr x12, [x29, 96]
|
||||
sub w1, w1, #5
|
||||
mov w3, 16777215
|
||||
.L55:
|
||||
cmp w28, w3
|
||||
lsl w7, w7, 1
|
||||
bhi .L53
|
||||
ldr x2, [x29, 104]
|
||||
cmp x2, x12
|
||||
add x4, x2, 1
|
||||
beq .L41
|
||||
str x4, [x29, 104]
|
||||
lsl w28, w28, 8
|
||||
ldrb w0, [x2]
|
||||
orr w27, w0, w27, lsl 8
|
||||
.L53:
|
||||
lsr w0, w28, 1
|
||||
cmp w0, w27
|
||||
mov w28, w0
|
||||
bhi .L54
|
||||
sub w27, w27, w0
|
||||
orr w7, w7, 1
|
||||
.L54:
|
||||
subs w1, w1, #1
|
||||
bne .L55
|
||||
lsl w7, w7, 4
|
||||
add x12, x11, 1604
|
||||
mov w13, 4
|
||||
b .L52
|
||||
.L67:
|
||||
mov w0, w21
|
||||
mov w21, w7
|
||||
mov w7, w0
|
||||
b .L40
|
||||
.L98:
|
||||
add x1, x13, 72
|
||||
add x18, x29, 96
|
||||
add x1, x11, x1
|
||||
mov w0, 0
|
||||
bl rcGetBit.2736
|
||||
cbnz w0, .L69
|
||||
mov w0, w21
|
||||
mov w21, w22
|
||||
mov w22, w0
|
||||
b .L40
|
||||
.L69:
|
||||
mov w0, w21
|
||||
mov w21, w23
|
||||
mov w23, w22
|
||||
mov w22, w0
|
||||
b .L40
|
||||
.L97:
|
||||
ldr x8, [x29, 104]
|
||||
b .L25
|
||||
.L63:
|
||||
mov w6, 0
|
||||
b .L25
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user