mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-23 04:52:54 +02:00
1a18abc9a8
This adds the CSDB instruction, which is a new barrier instruction described by the whitepaper at [1]. This is in encoding space which was previously executed as a NOP, so it is available for all targets that have the relevant NOP encoding space. This matches the binutils behaviour for these instructions [2][3]. [1] https://developer.arm.com/support/security-update [2] https://sourceware.org/ml/binutils/2018-01/msg00116.html [3] https://sourceware.org/ml/binutils/2018-01/msg00120.html llvm-svn: 324324
9 lines
466 B
ArmAsm
9 lines
466 B
ArmAsm
@ RUN: llvm-mc -triple armv8a-none-eabi -show-encoding %s | FileCheck %s --check-prefix=ARM
|
|
@ RUN: llvm-mc -triple thumbv8a-none-eabi -show-encoding %s | FileCheck %s --check-prefix=THUMB
|
|
@ RUN: not llvm-mc -triple thumbv6m-none-eabi -show-encoding %s 2>&1 | FileCheck %s --check-prefix=ERROR
|
|
|
|
csdb
|
|
@ ARM: csdb @ encoding: [0x14,0xf0,0x20,0xe3]
|
|
@ THUMB: csdb @ encoding: [0xaf,0xf3,0x14,0x80]
|
|
@ ERROR: error: instruction requires: thumb2
|