| // Copyright 2018 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. |
| |
| #include "../../../../../runtime/textflag.h" |
| |
| TEXT asmtest(SB),DUPOK|NOSPLIT,$0 |
| // Instructions that were encoded with BYTE sequences. |
| // Included to simplify validation of CL that fixed that. |
| MOVQ (AX), M0 // 0f6f00 |
| MOVQ M0, 8(SP) // 0f7f442408 |
| MOVQ 8(SP), M0 // 0f6f442408 |
| MOVQ M0, (AX) // 0f7f00 |
| MOVQ M0, (BX) // 0f7f03 |
| // On non-64bit arch, Go asm allowed uint32 offsets instead of int32. |
| // These tests check that property for backwards-compatibility. |
| MOVL 2147483648(AX), AX // 8b8000000080 |
| MOVL -2147483648(AX), AX // 8b8000000080 |
| ADDL 2147483648(AX), AX // 038000000080 |
| ADDL -2147483648(AX), AX // 038000000080 |
| // Make sure MOV CR/DR continues to work after changing its movtabs. |
| MOVL CR0, AX // 0f20c0 |
| MOVL CR0, DX // 0f20c2 |
| MOVL CR4, DI // 0f20e7 |
| MOVL AX, CR0 // 0f22c0 |
| MOVL DX, CR0 // 0f22c2 |
| MOVL DI, CR4 // 0f22e7 |
| MOVL DR0, AX // 0f21c0 |
| MOVL DR6, DX // 0f21f2 |
| MOVL DR7, SI // 0f21fe |
| // Test other movtab entries. |
| PUSHL SS // 16 |
| PUSHL FS // 0fa0 |
| POPL FS // 0fa1 |
| POPL SS // 17 |
| // End of tests. |
| RET |
