arm-undefined-weak.s
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// REQUIRES: arm
// RUN: llvm-mc -arm-add-build-attributes -filetype=obj -triple=armv7a-none-linux-gnueabi %s -o %t
// RUN: ld.lld --image-base=0x10000000 %t -o %t2
// RUN: llvm-objdump -triple=armv7a-none-linux-gnueabi --no-show-raw-insn -d %t2 | FileCheck %s
// Check that the ARM ABI rules for undefined weak symbols are applied.
// Branch instructions are resolved to the next instruction. Undefined
// Symbols in relative are resolved to the place so S - P + A = A.
// We place the image-base at 0x10000000 to test that a range extensions thunk
// is not generated.
.syntax unified
.weak target
.text
.global _start
_start:
// R_ARM_JUMP24
b target
// R_ARM_CALL
bl target
// R_ARM_CALL with exchange
blx target
// R_ARM_MOVT_PREL
movt r0, :upper16:target - .
// R_ARM_MOVW_PREL_NC
movw r0, :lower16:target - .
// R_ARM_REL32
.word target - .
// CHECK: Disassembly of section .text:
// CHECK-EMPTY:
// CHECK-NEXT: 100010b4 _start:
// CHECK-NEXT: 100010b4: b #-4
// CHECK-NEXT: 100010b8: bl #-4
// CHECK-NEXT: 100010bc: bl #-4
// CHECK-NEXT: 100010c0: movt r0, #0
// CHECK-NEXT: 100010c4: movw r0, #0
// CHECK: 100010c8: 00 00 00 00 .word 0x00000000