File: arm-fix-cortex-a8-thunk-align.s

package info (click to toggle)
llvm-toolchain-11 1%3A11.0.1-2
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 995,808 kB
  • sloc: cpp: 4,767,656; ansic: 760,916; asm: 477,436; python: 170,940; objc: 69,804; lisp: 29,914; sh: 23,855; f90: 18,173; pascal: 7,551; perl: 7,471; ml: 5,603; awk: 3,489; makefile: 2,573; xml: 915; cs: 573; fortran: 503; javascript: 452
file content (41 lines) | stat: -rw-r--r-- 1,171 bytes parent folder | download | duplicates (2)
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
// REQUIRES: arm
// RUN: llvm-mc -filetype=obj -triple=armv7a-linux-gnueabihf --arm-add-build-attributes %s -o %t.o
// RUN: ld.lld --fix-cortex-a8 --shared %t.o -o %t2
// RUN: llvm-objdump -d --no-show-raw-insn %t2 | FileCheck %s

/// Test case that for an OutputSection larger than the ThunkSectionSpacing
/// --fix-cortex-a8 will cause the size of the ThunkSection to be rounded up to
/// the nearest 4KiB
 .thumb

 .section .text.01, "ax", %progbits
 .balign 4096
 .globl _start
 .type _start, %function
_start:
  /// state change thunk required
  b.w arm_func
thumb_target:
  .space 4096 - 10
  /// erratum patch needed
  nop.w
  b.w thumb_target

/// Expect thunk and patch to be inserted here
// CHECK:  00012004 <__ThumbV7PILongThunk_arm_func>:
// CHECK-NEXT: 12004: movw    r12, #4088
// CHECK-NEXT:        movt    r12, #256
// CHECK-NEXT:        add     r12, pc
// CHECK-NEXT:        bx      r12
// CHECK:  00013004 <__CortexA8657417_11FFE>:
// CHECK-NEXT: 13004: b.w     #-8196
 .section .text.02
 /// Take us over thunk section spacing
 .space 16 * 1024 * 1024

 .section .text.03, "ax", %progbits
 .arm
 .balign 4
 .type arm_func, %function
arm_func:
  bx lr