| // REQUIRES: aarch64 |
| // RUN: llvm-mc -filetype=obj -triple=aarch64-linux-gnu %s -o %t |
| // RUN: echo "SECTIONS { \ |
| // RUN: .text_low : { *(.text_low) } \ |
| // RUN: .text_high 0x10000000 : { *(.text_high) } \ |
| // RUN: } " > %t.script |
| // RUN: ld.lld --script %t.script --shared %t -o %t2 2>&1 |
| // RUN: llvm-objdump -d -triple=aarch64-linux-gnu %t2 | FileCheck %s |
| |
| // Check that Position Independent thunks are generated for shared libraries. |
| .section .text_low, "ax", %progbits |
| .globl low_target |
| .type low_target, %function |
| low_target: |
| // Need thunk to high_target@plt |
| bl high_target |
| ret |
| // CHECK: low_target: |
| // CHECK-NEXT: 8: 04 00 00 94 bl #16 |
| // CHECK-NEXT: c: c0 03 5f d6 ret |
| |
| .hidden low_target2 |
| .globl low_target2 |
| .type low_target2, %function |
| low_target2: |
| // Need thunk to high_target |
| bl high_target2 |
| ret |
| // CHECK: low_target2: |
| // CHECK-NEXT: 0: 05 00 00 94 bl #20 |
| // CHECK-NEXT: 4: c0 03 5f d6 ret |
| |
| // Expect range extension thunks for .text_low |
| // adrp calculation is (PC + signed immediate) & (!0xfff) |
| // CHECK: __AArch64ADRPThunk_high_target: |
| // CHECK-NEXT: e8: 10 00 08 90 adrp x16, #268435456 |
| // CHECK-NEXT: ec: 10 02 01 91 add x16, x16, #64 |
| // CHECK-NEXT: f0: 00 02 1f d6 br x16 |
| // CHECK: __AArch64ADRPThunk_high_target2: |
| // CHECK-NEXT: f4: 10 00 08 90 adrp x16, #268435456 |
| // CHECK-NEXT: f8: 10 22 00 91 add x16, x16, #8 |
| // CHECK-NEXT: fc: 00 02 1f d6 br x16 |
| |
| |
| .section .text_high, "ax", %progbits |
| .globl high_target |
| .type high_target, %function |
| high_target: |
| // No thunk needed as we can reach low_target@plt |
| bl low_target |
| ret |
| // CHECK: high_target: |
| // CHECK-NEXT: 10000000: 14 00 00 94 bl #80 |
| // CHECK-NEXT: 10000004: c0 03 5f d6 ret |
| |
| .hidden high_target2 |
| .globl high_target2 |
| .type high_target2, %function |
| high_target2: |
| // Need thunk to low_target |
| bl low_target2 |
| ret |
| // CHECK: high_target2: |
| // CHECK-NEXT: 10000008: 02 00 00 94 bl #8 |
| // CHECK-NEXT: 1000000c: c0 03 5f d6 ret |
| |
| // Expect Thunk for .text.high |
| |
| // CHECK: __AArch64ADRPThunk_low_target2: |
| // CHECK-NEXT: 10000010: 10 00 f8 90 adrp x16, #-268435456 |
| // CHECK-NEXT: 10000014: 10 82 03 91 add x16, x16, #224 |
| // CHECK-NEXT: 10000018: 00 02 1f d6 br x16 |
| |
| // CHECK: Disassembly of section .plt: |
| // CHECK-NEXT: .plt: |
| // CHECK-NEXT: 10000020: f0 7b bf a9 stp x16, x30, [sp, #-16]! |
| // CHECK-NEXT: 10000024: 10 00 00 90 adrp x16, #0 |
| // CHECK-NEXT: 10000028: 11 3a 40 f9 ldr x17, [x16, #112] |
| // CHECK-NEXT: 1000002c: 10 c2 01 91 add x16, x16, #112 |
| // CHECK-NEXT: 10000030: 20 02 1f d6 br x17 |
| // CHECK-NEXT: 10000034: 1f 20 03 d5 nop |
| // CHECK-NEXT: 10000038: 1f 20 03 d5 nop |
| // CHECK-NEXT: 1000003c: 1f 20 03 d5 nop |
| // CHECK-EMPTY: |
| // CHECK-NEXT: high_target@plt: |
| // CHECK-NEXT: 10000040: 10 00 00 90 adrp x16, #0 |
| // CHECK-NEXT: 10000044: 11 3e 40 f9 ldr x17, [x16, #120] |
| // CHECK-NEXT: 10000048: 10 e2 01 91 add x16, x16, #120 |
| // CHECK-NEXT: 1000004c: 20 02 1f d6 br x17 |
| // CHECK-EMPTY: |
| // CHECK-NEXT: low_target@plt: |
| // CHECK-NEXT: 10000050: 10 00 00 90 adrp x16, #0 |
| // CHECK-NEXT: 10000054: 11 42 40 f9 ldr x17, [x16, #128] |
| // CHECK-NEXT: 10000058: 10 02 02 91 add x16, x16, #128 |
| // CHECK-NEXT: 1000005c: 20 02 1f d6 br x17 |
