tree c6b0fad77187e3bc5a6b2adcc343c06fafb35a83
parent 52c3e6f60cffa0133a3f9b2fc7f6862504a6cba0
author fanzha02 <fannie.zhang@arm.com> 1578482097 +0000
committer fannie zhang <Fannie.Zhang@arm.com> 1607306329 +0000

arm64/arm64asm: fix the wrong shifted register offset go assembler syntax

The current Go assembler encodes "MOVB R4, (R2)(R6)" as "44682638"
and encodes "MOVB R4, (R2)(R6<<0)" as "44782638", but the current
Go disassembler returns the same Go syntax "MOVB R4, (R3)(R6) for
the above two binarys. To match the assembler, this patch fixes the
wrong shifted register go syntax.

The fixed Go syntax:
  strb w4, [x2, x6, lsl #0]  ->   MOVB R4, (R2)(R6<<0)
  strb w4, [x2, x6]          ->   MOVB R4, (R2)(R6)

Change-Id: I60d4cdf1c04511891268efe510a18291fe0c0da6
Reviewed-on: https://go-review.googlesource.com/c/arch/+/214358
Run-TryBot: fannie zhang <Fannie.Zhang@arm.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Trust: fannie zhang <Fannie.Zhang@arm.com>