| // REQUIRES: aarch64 |
| // RUN: llvm-mc -filetype=obj -triple=aarch64-none-linux %s -o %t.o |
| // RUN: echo "SECTIONS { \ |
| // RUN: .text1 0x10000 : { *(.text.01) *(.text.02) *(.text.03) } \ |
| // RUN: .text2 0x8010000 : { *(.text.04) } } " > %t.script |
| // RUN: ld.lld --script %t.script -fix-cortex-a53-843419 -verbose %t.o -o %t2 2>&1 \ |
| // RUN: | FileCheck -check-prefix=CHECK-PRINT %s |
| // RUN: llvm-objdump -triple=aarch64-linux-gnu -d %t2 | FileCheck %s |
| |
| // %t2 is 128 Megabytes, so delete it early. |
| // RUN: rm %t2 |
| |
| // Test cases for Cortex-A53 Erratum 843419 that involve interactions with |
| // range extension thunks. Both erratum fixes and range extension thunks need |
| // precise address information and after creation alter address information. |
| |
| |
| .section .text.01, "ax", %progbits |
| .balign 4096 |
| .globl _start |
| .type _start, %function |
| _start: |
| bl far_away |
| // Thunk to far_away, size 16-bytes goes here. |
| |
| .section .text.02, "ax", %progbits |
| .space 4096 - 28 |
| |
| // Erratum sequence will only line up at address 0 modulo 0xffc when |
| // Thunk is inserted. |
| .section .text.03, "ax", %progbits |
| .globl t3_ff8_ldr |
| .type t3_ff8_ldr, %function |
| t3_ff8_ldr: |
| adrp x0, dat |
| ldr x1, [x1, #0] |
| ldr x0, [x0, :got_lo12:dat] |
| ret |
| |
| // CHECK-PRINT: detected cortex-a53-843419 erratum sequence starting at 10FFC in unpatched output. |
| // CHECK: t3_ff8_ldr: |
| // CHECK-NEXT: 10ffc: 00 00 04 90 adrp x0, #134217728 |
| // CHECK-NEXT: 11000: 21 00 40 f9 ldr x1, [x1] |
| // CHECK-NEXT: 11004: 02 00 00 14 b #8 |
| // CHECK-NEXT: 11008: c0 03 5f d6 ret |
| // CHECK: __CortexA53843419_11004: |
| // CHECK-NEXT: 1100c: 00 08 40 f9 ldr x0, [x0, #16] |
| // CHECK-NEXT: 11010: fe ff ff 17 b #-8 |
| |
| .section .text.04, "ax", %progbits |
| .globl far_away |
| .type far_away, function |
| far_away: |
| ret |
| |
| .section .data |
| .globl dat |
| dat: .quad 0 |