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![Scas instruction x86 or x64: >> http://krj.cloudz.pw/download?file=scas+instruction+x86+or+x64 << (Download)
Scas instruction x86 or x64: >> http://krj.cloudz.pw/read?file=scas+instruction+x86+or+x64 << (Read Online)
All members of the 80x86 family support five different string instructions: MOVSx, CMPSx, SCASx, LODSx, and STOSx. (x= B, W .. Therefore, when working on a later x86 processor, it may be more efficient to simply use MOVSB to copy the specified number of bytes rather than go through all the complexity outlined above.
25 Nov 2015 against the current value pointed at by. ES:[EDI] . When used together with the. REPNE. prefix (REPeat while Not Equal),. SCAS. scans the string searching for the first string element which is equal to the value in the accumulator. The instruction. scasb. searches the memory for the byte in. EAX. , starting at.
18 Feb 2017 This reference is intended to be precise opcode and instruction set reference (including x86-64). Its principal aim is exact definition of instruction parameters and attributes.
Opcode, Instruction, Op/En, 64-Bit Mode, Compat/Leg Mode, Description. AE, SCAS m8, ZO, Valid, Valid, Compare AL with byte at ES:(E)DI or RDI, then set status flags.*. AF, SCAS m16, ZO, Valid, Valid, Compare AX with word at ES:(E)DI or RDI, then set status flags.*. AF, SCAS m32, ZO, Valid, Valid, Compare EAX with
I'll try to explain it by reversing the code back into C. Intel's Instruction Set Reference (Volume 2 of Software Developer's Manual) is invaluable for this kind of reverse engineering. REPNE SCASB. The logic for REPNE and SCASB combined: while (ecx != 0) { temp = al - *(BYTE *)edi; SetStatusFlags(temp); if
31 Oct 2011
At the assembly-code level, two forms of this instruction are allowed: the "explicit-operands" form and the "no-operands" form. The explicit-operand form (specified with the SCAS mnemonic) allows the memory operand to be specified explicitly. Here, the memory operand should be a symbol that indicates the size and
AMD64 Technology. AMD64 Architecture. Programmer's Manual. Volume 3: General-Purpose and System. Instructions. Publication No. Revision. Date. 24594. 3.10. February 2005. Advanced Micro Devices
The string instructions operate on strings of bytes. Operations include storing strings in memory, loading SCAS. scan string. scasq valid only under –m64. scasb. SCASB. scan byte string. scasl. SCASD. scan doubleword string. scasw. SCASW. scan word string. stos{q}. STOS. store string. stosq valid only under –m64.](http://cdn08.dayviews.com/501/_u4/_u1/_u3/_u1/_u5/_u5/u4131553/61700_1521547572/Scas_instruction_x86_or_x64_http_krj_cloudz_pw_download_file_scas_instruction_x86_or_x64_Download.jpg)
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Scas instruction x86 or x64: >> http://krj.cloudz.pw/download?file=scas+instruction+x86+or+x64 << (Download)
Scas instruction x86 or x64: >> http://krj.cloudz.pw/read?file=scas+instruction+x86+or+x64 << (Read Online)
All members of the 80x86 family support five different string instructions: MOVSx, CMPSx, SCASx, LODSx, and STOSx. (x= B, W .. Therefore, when working on a later x86 processor, it may be more efficient to simply use MOVSB to copy the specified number of bytes rather than go through all the complexity outlined above.
25 Nov 2015 against the current value pointed at by. ES:[EDI] . When used together with the. REPNE. prefix (REPeat while Not Equal),. SCAS. scans the string searching for the first string element which is equal to the value in the accumulator. The instruction. scasb. searches the memory for the byte in. EAX. , starting at.
18 Feb 2017 This reference is intended to be precise opcode and instruction set reference (including x86-64). Its principal aim is exact definition of instruction parameters and attributes.
Opcode, Instruction, Op/En, 64-Bit Mode, Compat/Leg Mode, Description. AE, SCAS m8, ZO, Valid, Valid, Compare AL with byte at ES:(E)DI or RDI, then set status flags.*. AF, SCAS m16, ZO, Valid, Valid, Compare AX with word at ES:(E)DI or RDI, then set status flags.*. AF, SCAS m32, ZO, Valid, Valid, Compare EAX with
I'll try to explain it by reversing the code back into C. Intel's Instruction Set Reference (Volume 2 of Software Developer's Manual) is invaluable for this kind of reverse engineering. REPNE SCASB. The logic for REPNE and SCASB combined: while (ecx != 0) { temp = al - *(BYTE *)edi; SetStatusFlags(temp); if
31 Oct 2011
At the assembly-code level, two forms of this instruction are allowed: the "explicit-operands" form and the "no-operands" form. The explicit-operand form (specified with the SCAS mnemonic) allows the memory operand to be specified explicitly. Here, the memory operand should be a symbol that indicates the size and
AMD64 Technology. AMD64 Architecture. Programmer's Manual. Volume 3: General-Purpose and System. Instructions. Publication No. Revision. Date. 24594. 3.10. February 2005. Advanced Micro Devices
The string instructions operate on strings of bytes. Operations include storing strings in memory, loading SCAS. scan string. scasq valid only under –m64. scasb. SCASB. scan byte string. scasl. SCASD. scan doubleword string. scasw. SCASW. scan word string. stos{q}. STOS. store string. stosq valid only under –m64.
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