forked from KolibriOS/kolibrios
fix calculation 'adler32',
other small fixes git-svn-id: svn://kolibrios.org@6873 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
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846906fa8c
commit
c5ce2bec50
@ -149,9 +149,6 @@ f_zbz db ' ZB_line_z',0
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f_zb db ' ZB_line',0
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f_find_l db 'find_list',0
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f_alloc_l db 'alloc_list',0
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f_is_l db 'glIsList',0
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f_gen_l db 'glGenLists',0
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f_end_l db 'glEndList',0
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f_fill_tr db 'ZB_fillTriangle...',0
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f_fill_tr_nl db ' lines',0
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f_fill_tr_nll db ' len',0
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@ -2941,7 +2941,7 @@ align 4
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.cycle4:
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mov dword[edi+png_struct.zstream.avail_out],16*1024
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stdcall [deflate], esi, Z_NO_FLUSH
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stdcall [deflate], esi, Z_FINISH ;Z_NO_FLUSH
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cmp eax,Z_STREAM_ERROR
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je .end1
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@ -2949,13 +2949,14 @@ align 4
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sub ecx,[edi+png_struct.zstream.avail_out]
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cmp dword[edi+png_struct.zstream.avail_out],0
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je .cycle4 ;while (strm.avail_out == 0)
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if 0
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mov dword[edi+png_struct.zstream.avail_out],16*1024
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stdcall [deflate], esi, Z_FINISH
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add ecx,16*1024
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sub ecx,[edi+png_struct.zstream.avail_out]
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cmp eax,Z_STREAM_ERROR
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je .end1
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end if
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stdcall [deflateEnd], esi
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if PNG_WRITE_OPTIMIZE_CMF_SUPPORTED eq 1
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@ -9,12 +9,9 @@ NMAX equ 5552
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macro DO1 buf,i
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{
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mov eax,buf
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add eax,i
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movzx eax,byte[eax]
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movzx eax,byte[buf+i]
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add [adler],eax
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mov eax,[adler]
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add [sum2],eax
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add edi,[adler]
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}
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macro DO2 buf,i
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{
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@ -113,25 +110,18 @@ end if
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}
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; =========================================================================
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;uLong (adler, buf, len)
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; uLong adler
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; const Bytef *buf
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; uInt len
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align 4
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proc adler32 uses ebx edx, adler:dword, buf:dword, len:dword
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locals
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sum2 dd ? ;uLong
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endl
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;zlib_debug 'adler32 adler = %d',[adler]
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;uLong (uLong adler, const Bytef *buf, uInt len)
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align 16
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proc adler32 uses ebx ecx edx edi, adler:dword, buf:dword, len:dword
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; split Adler-32 into component sums
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mov eax,[adler]
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shr eax,16
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mov [sum2],eax
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and [adler],0xffff
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mov edi,[adler]
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shr edi,16
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and dword[adler],0xffff
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mov ebx,[buf]
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mov ecx,[len]
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; in case user likes doing a byte at a time, keep it fast
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cmp dword[len],1
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cmp ecx,1
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jne .end0 ;if (..==..)
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movzx eax,byte[ebx]
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add [adler],eax
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@ -139,15 +129,13 @@ endl
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jb @f ;if (..>=..)
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sub dword[adler],BASE
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@@:
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mov eax,[adler]
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add [sum2],eax
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cmp dword[sum2],BASE
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jb @f ;if (..>=..)
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sub dword[sum2],BASE
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@@:
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add edi,[adler]
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cmp edi,BASE
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jae .combine ;if (..>=..)
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sub edi,BASE
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jmp .combine
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align 4
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.end0:
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.end0:
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; initial Adler-32 value (deferred check for len == 1 speed)
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cmp ebx,Z_NULL
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@ -159,89 +147,82 @@ align 4
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@@:
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; in case short lengths are provided, keep it somewhat fast
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cmp dword[len],16
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jge .end1 ;if (..<..)
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cmp ecx,16
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jae .cycle3 ;if (..<..)
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.cycle0:
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cmp dword[len],0
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jne @f ;while (..)
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mov eax,ecx
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dec ecx
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test eax,eax
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je @f ;while (..)
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movzx eax,byte[ebx]
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inc ebx
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add [adler],eax
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mov eax,[adler]
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add [sum2],eax
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dec dword[len]
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inc ebx
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add edi,[adler]
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jmp .cycle0
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align 4
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@@:
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cmp dword[adler],BASE
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jl @f ;if (..>=..)
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jb @f ;if (..>=..)
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sub dword[adler],BASE
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@@:
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MOD28 dword[sum2] ;only added so many BASE's
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MOD28 edi ;only added so many BASE's
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jmp .combine
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align 4
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.end1:
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; do length NMAX blocks -- requires just one modulo operation
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align 4
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.cycle3:
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cmp dword[len],NMAX
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jl .cycle3end ;while (..>=..)
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sub dword[len],NMAX
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cmp ecx,NMAX
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jb .cycle3end ;while (..>=..)
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sub ecx,NMAX
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mov edx,NMAX/16 ;NMAX is divisible by 16
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.cycle1: ;do
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DO16 ebx ;16 sums unrolled
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add ebx,16
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dec edx
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cmp edx,0
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jg .cycle1 ;while (..)
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jne .cycle1 ;while (..)
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MOD [adler]
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MOD [sum2]
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MOD edi
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jmp .cycle3
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align 4
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.cycle3end:
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; do remaining bytes (less than NMAX, still just one modulo)
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cmp dword[len],0
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jne .end2 ;if (..) ;avoid modulos if none remaining
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@@:
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cmp dword[len],16
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jl .cycle2 ;while (..>=..)
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sub dword[len],16
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cmp ecx,0
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je .combine ;if (..) ;avoid modulos if none remaining
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@@:
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cmp ecx,16
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jb .cycle2 ;while (..>=..)
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sub ecx,16
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DO16 ebx
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add ebx,16
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jmp @b
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align 4
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.cycle2:
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cmp dword[len],0
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jne @f ;while (..)
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mov eax,ecx
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dec ecx
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test eax,eax
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je @f ;while (..)
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movzx eax,byte[ebx]
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inc ebx
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add [adler],eax
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mov eax,[adler]
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add [sum2],eax
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dec dword[len]
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inc ebx
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add edi,[adler]
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jmp .cycle2
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align 4
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@@:
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MOD [adler]
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MOD [sum2]
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.end2:
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MOD edi
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; return recombined sums
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.combine:
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mov eax,[sum2]
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mov eax,edi
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shl eax,16
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or eax,[adler]
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.end_f:
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;zlib_debug ' adler32.ret = %d',eax
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ret
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endp
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; =========================================================================
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;uLong (adler1, adler2, len2)
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; uLong adler1
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; uLong adler2
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; z_off64_t len2
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;uLong (uLong adler1, uLong adler2, z_off64_t len2)
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align 4
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proc adler32_combine_, adler1:dword, adler2:dword, len2:dword
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locals
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@ -341,6 +341,7 @@ end if
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mov edi,eax ;edi = s
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mov [ebx+z_stream.state],edi
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mov [edi+deflate_state.strm],ebx
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mov dword[edi+deflate_state.status],INIT_STATE ;to pass state test in deflateReset()
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mov eax,[wrap]
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mov [edi+deflate_state.wrap],eax
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@ -1009,7 +1010,7 @@ proc flush_pending uses eax ebx ecx edx, strm:dword
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mov ecx,[edx+deflate_state.pending]
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mov eax,[ebx+z_stream.avail_out]
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cmp ecx,eax
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jle @f ;if (..>..)
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jbe @f ;if (..>..)
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mov ecx,eax
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@@:
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test ecx,ecx
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@ -1220,7 +1221,7 @@ end if
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bswap ecx
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put_dword edi, ecx
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@@:
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xor eax,eax ;stdcall calc_crc32, 0, Z_NULL, 0
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stdcall adler32, 0,0,0
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mov [ebx+z_stream.adler],eax
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.end2:
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if GZIP eq 1
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@ -1772,7 +1773,7 @@ proc read_buf uses ebx ecx, strm:dword, buf:dword, size:dword
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mov eax,[ebx+z_stream.avail_in]
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cmp eax,[size]
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jle @f ;if (..>..)
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jbe @f ;if (..>..)
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mov eax,[size]
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@@:
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cmp eax,0
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@ -170,15 +170,7 @@ test_code:
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mov [eax+z_stream.next_out],m1 ;ãáâ ¢«¨¢ ¥¬ ¡ãä¥à ¤«ï ᦠâ¨ï
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mov dword[eax+z_stream.avail_out],1024 ;à §¬¥à ¡ãä¥à ¤«ï ᦠâ¨ï (¬ ªá¨¬ã¬ 16 Š¡)
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;¢ëç¨á«ï¥¬ crc ¤«ï ᦨ¬ ¥¬ë¦ ¤ ëå
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stdcall [calc_crc32], 0,m0,ecx
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mov edx,eax
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;call print_z_struct
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stdcall [deflate], my_strm, Z_FINISH ;Z_NO_FLUSH
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;call print_z_struct
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stdcall [deflate], my_strm, Z_FINISH
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;à §¬¥à ᦠâëå ¤ ëå: 1024-[my_strm.avail_out]
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mov ecx,1024
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@ -188,12 +180,6 @@ test_code:
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;assert(ret != Z_STREAM_ERROR)
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;while (strm.avail_out == 0)
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;áâ ¢¨¬ crc ᦠâë¥ ¤ ë¥
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mov ecx,[m1size]
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sub ecx,4
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add ecx,m1
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mov [ecx],edx
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;ä®à¬¨à®¢ ¨¥ ⥪áâ ¤«ï ®â®¡à ¦¥¨ï ᦠâëå ¤ ëå
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;¢ 16-à¨ç®¬ ¢¨¤¥, 㦮 ⮫쪮 ¤«ï ¯à¨¬¥à
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mov ebx,[m1size]
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@ -229,7 +215,7 @@ align 4
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add eax,2
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stdcall [deflate_unpack],eax,m2size
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mov [m2],eax ;§ ¯¨áì ®¢ëå à ᯠª®¢ ëå ¤ ëå
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mov ecx,[m0size] ;;; ???
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;;; mov ecx,[m0size] ;;; ???
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mov [m2size],ecx
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ret
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