Switch to zlib 1.2.7

1 files changed, 46 insertions, 6 deletions

diff --git a/zlib/contrib/masmx64/gvmat64.asm b/zlib/contrib/masmx64/gvmat64.asm
index 790d65554..9879c28b9 100644
--- a/zlib/contrib/masmx64/gvmat64.asm
+++ b/zlib/contrib/masmx64/gvmat64.asm
@@ -2,8 +2,10 @@
 ;    deflate_state *s,

 ;    IPos cur_match);                             /* current match */

 

-; gvmat64.asm -- Asm portion of the optimized longest_match for 32 bits x86

-; Copyright (C) 1995-2005 Jean-loup Gailly, Brian Raiter and Gilles Vollant.

+; gvmat64.asm -- Asm portion of the optimized longest_match for 32 bits x86_64

+;  (AMD64 on Athlon 64, Opteron, Phenom

+;     and Intel EM64T on Pentium 4 with EM64T, Pentium D, Core 2 Duo, Core I5/I7)

+; Copyright (C) 1995-2010 Jean-loup Gailly, Brian Raiter and Gilles Vollant.

 ;

 ; File written by Gilles Vollant, by converting to assembly the longest_match

 ;  from Jean-loup Gailly in deflate.c of zLib and infoZip zip.

@@ -11,6 +13,24 @@
 ;  and by taking inspiration on asm686 with masm, optimised assembly code

 ;        from Brian Raiter, written 1998

 ;

+;  This software is provided 'as-is', without any express or implied

+;  warranty.  In no event will the authors be held liable for any damages

+;  arising from the use of this software.

+;

+;  Permission is granted to anyone to use this software for any purpose,

+;  including commercial applications, and to alter it and redistribute it

+;  freely, subject to the following restrictions:

+;

+;  1. The origin of this software must not be misrepresented; you must not

+;     claim that you wrote the original software. If you use this software

+;     in a product, an acknowledgment in the product documentation would be

+;     appreciated but is not required.

+;  2. Altered source versions must be plainly marked as such, and must not be

+;     misrepresented as being the original software

+;  3. This notice may not be removed or altered from any source distribution.

+;

+;

+;

 ;         http://www.zlib.net

 ;         http://www.winimage.com/zLibDll

 ;         http://www.muppetlabs.com/~breadbox/software/assembly.html

@@ -26,10 +46,10 @@
 ;

 ; This file compile with Microsoft Macro Assembler (x64) for AMD64

 ;

-;   ml64.exe is given with Visual Studio 2005 and Windows 2003 server DDK

+;   ml64.exe is given with Visual Studio 2005/2008/2010 and Windows WDK

 ;

-;   (you can get Windows 2003 server DDK with ml64 and cl for AMD64 from

-;      http://www.microsoft.com/whdc/devtools/ddk/default.mspx for low price)

+;   (you can get Windows WDK with ml64 for AMD64 from

+;      http://www.microsoft.com/whdc/Devtools/wdk/default.mspx for low price)

 ;

 

 

@@ -71,6 +91,25 @@ save_r13        equ  rsp + 64 - LocalVarsSize
 ;save_r15        equ  rsp + 80 - LocalVarsSize

 

 

+; summary of register usage

+; scanend     ebx

+; scanendw    bx

+; chainlenwmask   edx

+; curmatch    rsi

+; curmatchd   esi

+; windowbestlen   r8

+; scanalign   r9

+; scanalignd  r9d

+; window      r10

+; bestlen     r11

+; bestlend    r11d

+; scanstart   r12d

+; scanstartw  r12w

+; scan        r13

+; nicematch   r14d

+; limit       r15

+; limitd      r15d

+; prev        rcx

 

 ;  all the +4 offsets are due to the addition of pending_buf_size (in zlib

 ;  in the deflate_state structure since the asm code was first written

@@ -406,7 +445,8 @@ LoopCmps:
 

         add rdx,8+8+8

 

-        jmp short LoopCmps

+        jnz short LoopCmps

+        jmp short LenMaximum

 LeaveLoopCmps16: add rdx,8

 LeaveLoopCmps8: add rdx,8

 LeaveLoopCmps: