| // REQUIRES: arm |
| // RUN: llvm-mc -filetype=obj -triple=armv7a-linux-gnueabihf --arm-add-build-attributes %s -o %t.o |
| // RUN: echo "SECTIONS { \ |
| // RUN: .text0 0x011006 : { *(.text.00) } \ |
| // RUN: .text1 0x110000 : { *(.text.01) *(.text.02) *(.text.03) \ |
| // RUN: *(.text.04) } \ |
| // RUN: .text2 0x210000 : { *(.text.05) } } " > %t.script |
| // RUN: ld.lld --script %t.script --fix-cortex-a8 --shared -verbose %t.o -o %t2 2>&1 |
| // RUN: llvm-objdump -d --no-show-raw-insn %t2 | FileCheck %s |
| |
| /// Test cases for Cortex-a8 Erratum 657417 that involve interactions with |
| /// range extension thunks. Both erratum fixes and range extension thunks need |
| /// precise information and after creation alter address information. |
| .thumb |
| |
| .section .text.00, "ax", %progbits |
| .thumb_func |
| early: |
| bx lr |
| |
| .section .text.01, "ax", %progbits |
| .balign 4096 |
| .globl _start |
| .type _start, %function |
| _start: |
| beq.w far_away |
| /// Thunk to far_away and state change needed, size 12-bytes goes here. |
| // CHECK: 00110004 <__ThumbV7PILongThunk_far_away>: |
| // CHECK-NEXT: 110004: movw r12, #65524 |
| // CHECK-NEXT: movt r12, #15 |
| // CHECK-NEXT: add r12, pc |
| // CHECK-NEXT: bx r12 |
| |
| .section .text.02, "ax", %progbits |
| .space 4096 - 22 |
| |
| .section .text.03, "ax", %progbits |
| .thumb_func |
| target: |
| /// After thunk is added this branch will line up across 2 4 KiB regions |
| /// and will trigger a patch. |
| nop.w |
| bl target |
| |
| /// Expect erratum patch inserted here |
| // CHECK: 00110ffa <target>: |
| // CHECK-NEXT: 110ffa: nop.w |
| // CHECK-NEXT: bl 0x111004 <__CortexA8657417_110FFE> |
| // CHECK: 00111004 <__CortexA8657417_110FFE>: |
| // CHECK-NEXT: 111004: b.w 0x110ffa <target> |
| |
| /// Expect range extension thunk here. |
| // CHECK: 00111008 <__ThumbV7PILongThunk_early>: |
| // CHECK-NEXT: 111008: b.w 0x11006 <early> |
| |
| .section .text.04, "ax", %progbits |
| /// The erratum patch will push this branch out of range, so another |
| /// range extension thunk will be needed. |
| beq.w early |
| // CHECK: 11100c: beq.w 0x111008 <__ThumbV7PILongThunk_early> |
| |
| .section .text.05, "ax", %progbits |
| .arm |
| nop |
| .type far_away, %function |
| far_away: |
| bx lr |