File: aarch64-undefined-weak.s

package info (click to toggle)
llvm-toolchain-6.0 1%3A6.0.1-10
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 598,080 kB
  • sloc: cpp: 3,046,253; ansic: 595,057; asm: 271,965; python: 128,926; objc: 106,554; sh: 21,906; lisp: 10,191; pascal: 6,094; ml: 5,544; perl: 5,265; makefile: 2,227; cs: 2,027; xml: 686; php: 212; csh: 117
file content (49 lines) | stat: -rw-r--r-- 1,441 bytes parent folder | download
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
41
42
43
44
45
46
47
48
49
// RUN: llvm-mc -filetype=obj -triple=aarch64-none-linux %s -o %t
// RUN: ld.lld %t -o %t2 2>&1
// RUN: llvm-objdump -triple=aarch64-none-linux -d %t2 | FileCheck %s
// REQUIRES: aarch64

// Check that the ARM 64-bit 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.

 .weak target

 .text
 .global _start
_start:
// R_AARCH64_JUMP26
 b target
// R_AARCH64_CALL26
 bl target
// R_AARCH64_CONDBR19
 b.eq target
// R_AARCH64_TSTBR14
 cbz x1, target
// R_AARCH64_ADR_PREL_LO21
 adr x0, target
// R_AARCH64_ADR_PREL_PG_HI21
 adrp x0, target
// R_AARCH64_PREL32
 .word target - .
// R_AARCH64_PREL64
 .xword target - .
// R_AARCH64_PREL16
 .hword target - .
// R_AARCH64_LD_PREL_LO19
 ldr x8, target

// CHECK: Disassembly of section .text:
// 131072 = 0x20000
// CHECK:         20000: {{.*}} b       #4
// CHECK-NEXT:    20004: {{.*}} bl      #4
// CHECK-NEXT:    20008: {{.*}} b.eq    #4
// CHECK-NEXT:    2000c: {{.*}} cbz     x1, #4
// CHECK-NEXT:    20010: {{.*}} adr     x0, #0
// CHECK-NEXT:    20014: {{.*}} adrp    x0, #-131072
// CHECK:         20018: {{.*}} .word   0x00000000
// CHECK-NEXT:    2001c: {{.*}} .word   0x00000000
// CHECK-NEXT:    20020: {{.*}} .word   0x00000000
// CHECK-NEXT:    20024: {{.*}} .short  0x0000
// CHECK:         $x.2:
// CHECK-NEXT:    20026: {{.*}} ldr     x8, #0