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lzma ELF minimal CLzmaDecoderState each time

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This commit is contained in:
John Reiser 2006-06-24 14:44:40 -07:00
parent 4eb505755e
commit 02bc48925a
11 changed files with 5759 additions and 5735 deletions
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1021
src/stub/i386-dos32.djgpp2.h
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1037
src/stub/i386-dos32.tmt.h
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1046
src/stub/i386-dos32.watcom.le.h
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src/stub/i386-linux.elf-entry.h
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src/stub/i386-linux.elf.execve-entry.h
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src/stub/i386-linux.elf.interp-entry.h
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src/stub/i386-linux.elf.shell-entry.h
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src/stub/i386-linux.kernel.vmlinux.h
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src/stub/i386-linux.kernel.vmlinuz.h
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src/stub/i386-win32.pe.h
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src/stub/src/arch/i386/lzma_d.ash
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@ -83,45 +83,56 @@
; __LZMA_ELF00__
;
LZMA_BASE_SIZE equ 1846
LZMA_LIT_SIZE equ 768
%ifndef O_OUTS ; ELF defines them, others do not care
%define O_OUTS 0
%define O_INS 0
%endif
mov ebp, esp ; save stack
lea ebx, [esp -0x4000] ; 16KB enough?
xor eax, eax
xor eax,eax ; 0
lodsb ; al= 1 byte for LzmaDecodeProperties()
mov dl,9
div dl ; (ah:rem, al:quo)= ax / dl
mov cl,ah ; cl = lit_context_bits
movzx eax,al ; 1st_byte / 9
mov dl,5
div dl ; ah= lit_pos_bits; al= pos_bits
mov ch,cl ; ch = lit_context_bits
add cl,ah ; cl = lit_context_bits + lit_pos_bits;
mov ebx, -LZMA_LIT_SIZE
sal ebx, cl
add ebx, -LZMA_BASE_SIZE
; /* inSizeProcessed, outSizeProcessed, *_bits, CLzmaDecoderState */
lea ebx,[-(2*4 +4) + 2*ebx + esp]
and ebx, byte (~0<<4) ; 16-byte align
.elf_clearstack1:
push eax
cmp esp, ebx
jne .elf_clearstack1
lodsb ; al= 1 byte for LzmaDecodeProperties()
push byte 0
cmp esp,ebx
jne .elf_clearstack1
push ebx ; &outSizeProcessed
add ebx, 4
mov ecx,[O_OUTS + ebp] ; &outSize
push dword [ecx] ; outSize
mov edx,[O_OUTS + ebp] ; &outSize
push dword [edx] ; outSize
push edi ; out
push ebx ; &inSizeProcessed
add ebx, 4
mov ecx,[O_INS + ebp]
dec ecx ; 1 byte for LzmaDecodeProperties()
push ecx ; inSize
mov edx,[O_INS + ebp]
dec edx ; 1 byte for LzmaDecodeProperties()
push edx ; inSize
push esi ; in
push ebx ; &CLzmaDecoderState
push eax ; return address slot (dummy CALL)
mov cl,9
div cl ; (ah:rem, al:quo)= ax / cl
mov [0+ ebx],ah ; store lit_context_bits (remainder)
movzx eax,al ; param / 9
mov cl,5
div cl
mov [1+ ebx],ah ; store lit_pos_bits (remainder)
mov [2+ ebx],al ; store pos_bits (quotient)
mov [ ebx],ch ; store lit_context_bits
mov [1+ ebx],ah ; store lit_pos_bits
mov [2+ ebx],al ; store pos_bits
; __LZMA_DEC10__
%include "arch/i386/lzma_d_cs.ash"