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The Netwide Assembler (NASM) is an assembler and disassembler for the Intel x86 architecture. It can be used to write 16-bit , 32-bit ( IA-32 ) and 64-bit ( x86-64 ) programs. It is considered one of the most popular assemblers for Linux and x86 chips .
In the x86 assembly language, the TEST instruction performs a bitwise AND on two operands. The flags SF, ZF, PF are modified while the result of the AND is discarded. The OF and CF flags are set to 0, while AF flag is undefined. There are 9 different opcodes for the TEST instruction depending on the type and size of the operands. It can compare ...
x86 assembly language includes instructions for a stack-based floating-point unit (FPU). The FPU was an optional separate coprocessor for the 8086 through the 80386, it was an on-chip option for the 80486 series, and it is a standard feature in every Intel x86 CPU since the 80486, starting with the Pentium.
The x86 instruction set refers to the set of instructions that x86-compatible microprocessors support. The instructions are usually part of an executable program, often stored as a computer file and executed on the processor. The x86 instruction set has been extended several times, introducing wider registers and datatypes as well as new ...
In 2018 researcher Christopher Domas reported that the prefix 0x620405 (x86 BOUND) also worked. A proposal made in 2002 to add AIS support to the Netwide Assembler (NASM) was partially declined in 2005, on the basis that NASM was an x86 assembler, and AIS is a separate instruction set. [4] An assembler is available from Domas's 2018 research. [5]
SQUOZE was a compressed binary form of assembly language code and included a symbol table. Modern IBM mainframe operating systems, such as z/OS, have available a symbol table named Associated data (ADATA). The table is stored in a file that can be produced by the IBM High-Level Assembler (HLASM), [18] IBM's COBOL compiler, [19] and IBM's PL/I ...
Open Watcom Assembler or WASM is an x86 assembler produced by Watcom, based on the Watcom Assembler found in Watcom C/C++ compiler and Watcom FORTRAN 77. [ 1 ] [ 2 ] [ 3 ] Further development is being done on the 32- and 64-bit JWASM project, [ 4 ] which more closely matches the syntax of Microsoft's assembler .
High-Level Assembly (HLA) is a language developed by Randall Hyde that allows the use of higher-level language constructs to aid both beginners and advanced assembly developers. It supports advanced data types and object-oriented programming .