On Wed, May 15, 2024 at 12:15:39PM +0100, Jonathan Wakely via Gcc-help wrote: > On Wed, 15 May 2024 at 10:12, anand akhare via Gcc-help > <gcc-help@xxxxxxxxxxx> wrote: > > Pls provide any link reference which is official reference gnu assembler instruction for x86, > > Gas doesn't define the x86 instructions, Intel does. The source code of GAS (well, libopcodes) is the ultimate reference to what instruction syntax is accepted by GAS. See https://sourceware.org/git/?p=binutils-gdb.git;a=blob&f=opcodes/i386-opc.tbl and files around that. Segher