1// REQUIRES: arm 2// RUN: llvm-mc --triple=armv7a-none-eabi --arm-add-build-attributes -filetype=obj -o %t.o %s 3// RUN: ld.lld %t.o -o %t 4/// R_ARM_ALU_PC_G0 referencing a non-preemptible symbol can be used in PIC links. 5// RUN: ld.lld %t.o --shared -o /dev/null 6// RUN: llvm-objdump -d --no-show-raw-insn --triple=armv7a-none-eabi %t | FileCheck %s 7 8/// Test the short range cases of R_ARM_ALU_PC_G0. The range of the instruction 9/// depends on the number of trailing zeros of the displacement. In practice 10/// the maximum effective range will be 1024 bytes, which is a 4-byte aligned 11/// instruction to a 4-byte aligned word. 12 13 .arm 14 .section .os1, "ax", %progbits 15 .balign 1024 16 .word 0 17 .word 0 18 .word 0 19 .word 0 20dat1: 21 .word 0 22dat2: 23 .word 0 24 25 .section .os2, "ax", %progbits 26 .balign 1024 27 .global _start 28 .type _start, %function 29_start: 30/// adr r0, dat1 31 .inst 0xe24f0008 32 .reloc 0, R_ARM_ALU_PC_G0, dat1 33/// adr r0, dat2 34 .inst 0xe24f0008 35 .reloc 4, R_ARM_ALU_PC_G0, dat2 36/// adr r0, dat3 37 .inst 0xe24f0008 38 .reloc 8, R_ARM_ALU_PC_G0, dat3 39/// adr r0, dat4 40 .inst 0xe24f0008 41 .reloc 0xc, R_ARM_ALU_PC_G0, dat4 42 43 .section .os3, "ax", %progbits 44 .balign 1024 45 .word 0 46 .word 0 47 .word 0 48 .word 0 49dat3: 50 .word 0 51dat4: 52 .word 0 53 54 .section .os4, "ax", %progbits 55 .thumb 56 .type tfunc, %function 57tfunc: 58 bx lr 59 60 .section .os5, "ax", %progbits 61 .arm 62 .type arm_func, %function 63 64arm_func: 65 .balign 4 66/// adr r0, tfunc 67 .inst 0xe24f0008 68 .reloc 0, R_ARM_ALU_PC_G0, tfunc 69/// adr r0, afunc 70 .inst 0xe24f0008 71 .reloc 4, R_ARM_ALU_PC_G0, afunc 72 bx lr 73 74 .section .os6, "ax", %progbits 75 .type afunc, %function 76 .balign 4 77afunc: 78 bx lr 79 80// CHECK: 00020410 <dat1>: 81// CHECK-NEXT: 20410: andeq r0, r0, r0 82 83// CHECK: 00020414 <dat2>: 84// CHECK-NEXT: 20414: andeq r0, r0, r0 85 86// CHECK: 00020800 <_start>: 87/// 0x20800 + 0x8 - 0x3f8 = 0x11410 = dat1 88// CHECK-NEXT: 20800: sub r0, pc, #1016 89/// 0x20804 + 0x8 - 0x3f8 = 0x11414 = dat2 90// CHECK-NEXT: 20804: sub r0, pc, #1016 91/// 0x20808 + 0x8 + 0x400 = 0x11c10 = dat3 92// CHECK-NEXT: 20808: add r0, pc, #64, #28 93/// 0x2080c + 0x8 + 0x400 = 0x11c14 = dat4 94// CHECK-NEXT: 2080c: add r0, pc, #64, #28 95 96// CHECK: 00020c10 <dat3>: 97// CHECK-NEXT: 20c10: andeq r0, r0, r0 98 99// CHECK: 00020c14 <dat4>: 100// CHECK-NEXT: 20c14: andeq r0, r0, r0 101 102// CHECK: 00020c18 <tfunc>: 103// CHECK-NEXT: 20c18: bx lr 104 105// CHECK: 00020c1c <arm_func>: 106/// 0x20c1c + 0x8 - 0xb = 11c19 = tfunc 107// CHECK-NEXT: 20c1c: sub r0, pc, #11 108/// 0x20c20 + 0x8 = 0x11c28 = afunc 109// CHECK-NEXT: 20c20: add r0, pc, #0 110// CHECK-NEXT: 20c24: bx lr 111 112// CHECK: 00020c28 <afunc>: 113// CHECK-NEXT: 20c28: bx lr 114