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
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
// REQUIRES: arm
// RUN: split-file %s %t
// RUN: llvm-mc -arm-add-build-attributes -filetype=obj -triple=thumbv7a-none-linux-gnueabi %t/test.s -o %t.o
// RUN: ld.lld --script %t/script %t.o -o %t2
// RUN: llvm-objdump --no-print-imm-hex --no-show-raw-insn -d %t2 | FileCheck %s
// RUN: llvm-mc -arm-add-build-attributes -filetype=obj -triple=thumbv7aeb-none-linux-gnueabi -mcpu=cortex-a8 %t/test.s -o %t.o
// RUN: ld.lld --script %t/script %t.o -o %t2
// RUN: llvm-objdump --no-print-imm-hex --no-show-raw-insn -d %t2 | FileCheck %s
// RUN: ld.lld --be8 --script %t/script %t.o -o %t2
// RUN: llvm-objdump --no-print-imm-hex --no-show-raw-insn -d %t2 | FileCheck %s
/// Test that we can reuse thunks between Arm and Thumb callers
/// using a BL. Expect two thunks, one for far, one for far2.
//--- script
SECTIONS {
.text 0x10000 : { *(.text) }
.text.far 0x10000000 : AT (0x10000000) { *(.far) }
}
//--- test.s
.syntax unified
.text
.globl _start
.type _start, %function
.arm
_start:
bl far
.thumb
bl far
bl far2
.arm
bl far2
// CHECK: 00010000 <_start>:
// CHECK-NEXT: 10000: bl 0x10010 <__ARMv7ABSLongThunk_far>
// CHECK-NEXT: 10004: blx 0x10010 <__ARMv7ABSLongThunk_far>
// CHECK-NEXT: 10008: bl 0x1001c <__Thumbv7ABSLongThunk_far2>
// CHECK-NEXT: 1000c: blx 0x1001c <__Thumbv7ABSLongThunk_far2>
// CHECK: 00010010 <__ARMv7ABSLongThunk_far>:
// CHECK-NEXT: 10010: movw r12, #0
// CHECK-NEXT: 10014: movt r12, #4096
// CHECK-NEXT: 10018: bx r12
// CHECK: 0001001c <__Thumbv7ABSLongThunk_far2>:
// CHECK-NEXT: 1001c: movw r12, #4
// CHECK-NEXT: 10020: movt r12, #4096
// CHECK-NEXT: 10024: bx r12
.section .text.far, "ax", %progbits
.globl far
.type far, %function
far:
bx lr
.globl far2
.type far2, %function
far2:
bx lr
// CHECK: Disassembly of section .text.far:
// CHECK: 10000000 <far>:
// CHECK-NEXT: 10000000: bx lr
// CHECK: 10000004 <far2>:
// CHECK-NEXT: 10000004: bx lr
|
