diff options
Diffstat (limited to 'test/ELF/arm-branch-undef-weak-plt-thunk.s')
| -rw-r--r-- | test/ELF/arm-branch-undef-weak-plt-thunk.s | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/test/ELF/arm-branch-undef-weak-plt-thunk.s b/test/ELF/arm-branch-undef-weak-plt-thunk.s new file mode 100644 index 000000000000..f95da0dcec21 --- /dev/null +++ b/test/ELF/arm-branch-undef-weak-plt-thunk.s @@ -0,0 +1,35 @@ +// RUN: llvm-mc -filetype=obj -triple=armv7a-none-linux-gnueabi %S/Inputs/arm-shared.s -o %t +// RUN: ld.lld %t --shared -o %t.so +// RUN: llvm-mc -filetype=obj -triple=armv7a-none-linux-gnueabi %s -o %t2 +// RUN: ld.lld %t2 %t.so -o %t3 +// RUN: llvm-objdump -d -triple=armv7a-none-linux-gnueabi -start-address=69632 -stop-address=69664 %t3 | FileCheck %s +// REQUIRES: arm + +// When we are dynamic linking, undefined weak references have a PLT entry so +// we must create a thunk for the branch to the PLT entry. + + .text + .globl bar2 + .weak undefined_weak_we_expect_a_plt_entry_for +_start: + .globl _start + .type _start, %function + b undefined_weak_we_expect_a_plt_entry_for + bl bar2 +// Create 32 Mb gap between the call to the weak reference and the PLT so that +// the b and bl need a range-extension thunk. + .section .text.1, "ax", %progbits + .space 32 * 1024 * 1024 + +// CHECK: Disassembly of section .text: +// CHECK-NEXT: _start: +// CHECK-NEXT: 11000: 00 00 00 ea b #0 <__ARMv7ABSLongThunk_undefined_weak_we_expect_a_plt_entry_for> +// CHECK-NEXT: 11004: 02 00 00 eb bl #8 <__ARMv7ABSLongThunk_bar2> +// CHECK: __ARMv7ABSLongThunk_undefined_weak_we_expect_a_plt_entry_for: +// CHECK-NEXT: 11008: 40 c0 01 e3 movw r12, #4160 +// CHECK-NEXT: 1100c: 01 c2 40 e3 movt r12, #513 +// CHECK-NEXT: 11010: 1c ff 2f e1 bx r12 +// CHECK: __ARMv7ABSLongThunk_bar2: +// CHECK-NEXT: 11014: 50 c0 01 e3 movw r12, #4176 +// CHECK-NEXT: 11018: 01 c2 40 e3 movt r12, #513 +// CHECK-NEXT: 1101c: 1c ff 2f e1 bx r12 |