If I'm reading the AMD manuals correctly, the extrq instruction has one form with operands described in the table as Vdq,Ib,Ib. The V in Vdq is described as being the ModRM reg field. If I disassemble an example with objdump, I see this:
objdump: 40356c: 66 0f 78 c1 02 04 extrq $0x4,$0x2,%xmm1 modrm byte is 0xc1 mod = 3 reg = 0 rm = 1 So objdump seems to be picking %xmm1 from the rm field, not the reg field. Are the binutils busted, or are the AMD manuals busted? _______________________________________________ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils
