1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
// REQUIRES: arm
// RUN: llvm-mc -filetype=obj -triple=armv7a-none-linux-gnueabi %s -o %t
// RUN: ld.lld %t -o %t2 2>&1
// RUN: llvm-objdump -triple=armv7a-none-linux-gnueabi -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.
.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:
// 69636 = 0x11004
// CHECK: 11000: {{.*}} b #-4 <_start+0x4>
// CHECK-NEXT: 11004: {{.*}} bl #-4 <_start+0x8>
// blx is transformed into bl so we don't change state
// CHECK-NEXT: 11008: {{.*}} bl #-4 <_start+0xc>
// CHECK-NEXT: 1100c: {{.*}} movt r0, #0
// CHECK-NEXT: 11010: {{.*}} movw r0, #0
// CHECK: 11014: {{.*}} .word 0x00000000
|
