| // REQUIRES: arm |
| // RUN: llvm-mc -filetype=obj -triple=thumbv7a-none-linux-gnueabi %s -o %t |
| // RUN: echo "SECTIONS { \ |
| // RUN: . = SIZEOF_HEADERS; \ |
| // RUN: .R_ARM_PC11_1 : { *(.R_ARM_PC11_1) } \ |
| // RUN: .caller : { *(.caller) } \ |
| // RUN: .R_ARM_PC11_2 : { *(.R_ARM_PC11_2) } \ |
| // RUN: .text : { *(.text) } } " > %t.script |
| // RUN: ld.lld --script %t.script %t %S/Inputs/arm-thumb-narrow-branch.o -o %t2 2>&1 |
| // RUN: llvm-objdump -d -triple=thumbv7a-none-linux-gnueabi %t2 | FileCheck %s |
| |
| // Test the R_ARM_PC11 relocation which is used with the narrow encoding of B.N |
| // the source of these relocations is a binary file arm-thumb-narrow-branch.o |
| // which has been assembled with the GNU assembler as llvm-mc doesn't emit it |
| // as the range of +-2048 bytes is too small to be practically useful for out |
| // of section branches. |
| .syntax unified |
| |
| .global callee_low_far |
| .type callee_low_far,%function |
| callee_low_far = 0x809 |
| |
| .section .R_ARM_PC11_1,"ax",%progbits |
| .thumb |
| .balign 0x1000 |
| .type callee_low,%function |
| .globl callee_low |
| callee_low: |
| bx lr |
| |
| .text |
| .align 2 |
| .thumb |
| .globl _start |
| .type _start, %function |
| _start: |
| bl callers |
| bx lr |
| |
| .section .R_ARM_PC11_2,"ax",%progbits |
| .thumb |
| .align 2 |
| .type callee_high,%function |
| .globl callee_high |
| callee_high: |
| bx lr |
| |
| .global callee_high_far |
| .type callee_high_far,%function |
| callee_high_far = 0x180d |
| |
| // CHECK: Disassembly of section .R_ARM_PC11_1: |
| // CHECK-NEXT: callee_low: |
| // CHECK-NEXT: 1000: 70 47 bx lr |
| // CHECK-NEXT: Disassembly of section .caller: |
| // CHECK-NEXT: callers: |
| // 1004 - 0x800 (2048) + 4 = 0x808 = callee_low_far |
| // CHECK-NEXT: 1004: 00 e4 b #-2048 |
| // 1006 - 0xa (10) + 4 = 0x1000 = callee_low |
| // CHECK-NEXT: 1006: fb e7 b #-10 |
| // 1008 + 4 + 4 = 0x1010 = callee_high |
| // CHECK-NEXT: 1008: 02 e0 b #4 |
| // 100a + 0x7fe (2046) + 4 = 0x180c = callee_high_far |
| // CHECK-NEXT: 100a: ff e3 b #2046 |
| // CHECK-NEXT: 100c: 70 47 bx lr |
| // CHECK-NEXT: 100e: 00 bf nop |
| // CHECK-NEXT: Disassembly of section .R_ARM_PC11_2: |
| // CHECK-NEXT: callee_high: |
| // CHECK-NEXT: 1010: 70 47 bx lr |
| // CHECK-NEXT: Disassembly of section .text: |
| // CHECK-NEXT: _start: |
| // CHECK-NEXT: 1014: ff f7 f6 ff bl #-20 |
| // CHECK-NEXT: 1018: 70 47 bx lr |
