| // Copyright 2021 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| // Test to make sure that if we use R15 after it is clobbered by |
| // a global variable access while dynamic linking, we get an error. |
| // See issue 43661. |
| |
| TEXT ·a1(SB), 0, $0-0 |
| CMPL runtime·writeBarrier(SB), $0 |
| MOVL $0, R15 |
| RET |
| TEXT ·a2(SB), 0, $0-0 |
| CMPL runtime·writeBarrier(SB), $0 |
| MOVQ $0, R15 |
| RET |
| TEXT ·a3(SB), 0, $0-0 |
| CMPL runtime·writeBarrier(SB), $0 |
| XORL R15, R15 |
| RET |
| TEXT ·a4(SB), 0, $0-0 |
| CMPL runtime·writeBarrier(SB), $0 |
| XORQ R15, R15 |
| RET |
| TEXT ·a5(SB), 0, $0-0 |
| CMPL runtime·writeBarrier(SB), $0 |
| XORL R15, R15 |
| RET |
| TEXT ·a6(SB), 0, $0-0 |
| CMPL runtime·writeBarrier(SB), $0 |
| POPQ R15 |
| PUSHQ R15 |
| RET |
| TEXT ·a7(SB), 0, $0-0 |
| CMPL runtime·writeBarrier(SB), $0 |
| MOVQ R15, AX // ERROR "when dynamic linking, R15 is clobbered by a global variable access and is used here" |
| RET |
| TEXT ·a8(SB), 0, $0-0 |
| CMPL runtime·writeBarrier(SB), $0 |
| ADDQ AX, R15 // ERROR "when dynamic linking, R15 is clobbered by a global variable access and is used here" |
| RET |
| TEXT ·a9(SB), 0, $0-0 |
| CMPL runtime·writeBarrier(SB), $0 |
| ORQ R15, R15 // ERROR "when dynamic linking, R15 is clobbered by a global variable access and is used here" |
| RET |
| TEXT ·a10(SB), 0, $0-0 |
| CMPL runtime·writeBarrier(SB), $0 |
| JEQ one |
| ORQ R15, R15 // ERROR "when dynamic linking, R15 is clobbered by a global variable access and is used here" |
| one: |
| RET |
| TEXT ·a11(SB), 0, $0-0 |
| CMPL runtime·writeBarrier(SB), $0 |
| JEQ one |
| JMP two |
| one: |
| ORQ R15, R15 // ERROR "when dynamic linking, R15 is clobbered by a global variable access and is used here" |
| two: |
| RET |
| TEXT ·a12(SB), 0, $0-0 |
| CMPL runtime·writeBarrier(SB), $0 |
| JMP one |
| two: |
| ORQ R15, R15 |
| RET |
| one: |
| MOVL $0, R15 |
| JMP two |
