diff options
| -rw-r--r-- | lld/test/ELF/ppc64le-toc-rel.s | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/lld/test/ELF/ppc64le-toc-rel.s b/lld/test/ELF/ppc64le-toc-rel.s new file mode 100644 index 00000000000..aff3da756ad --- /dev/null +++ b/lld/test/ELF/ppc64le-toc-rel.s @@ -0,0 +1,64 @@ +# REQUIRES: ppc +# RUN: llvm-mc -filetype=obj -triple=powerpc64le-unknown-linux %s -o %t.o +# RUN: llvm-readobj -relocations %t.o | FileCheck -check-prefix=RELOCS %s +# RUN: ld.lld %t.o -o %t2 +# RUN: llvm-objdump -D %t2 | FileCheck %s + +# Make sure we calculate the offset correctly for a toc-relative access to a +# global variable as described by the PPC64 Elf V2 abi. +.abiversion 2 + +# int global_a = 55 + .globl global_a + .section ".data" + .align 2 + .type global_a, @object + .size global_a, 4 + .p2align 2 +global_a: + .long 41 + + + .section ".text" + .align 2 + .global _start + .type _start, @function +_start: +.Lfunc_gep0: + addis 2, 12, .TOC.-.Lfunc_gep0@ha + addi 2, 2, .TOC.-.Lfunc_gep0@l +.Lfunc_lep0: + .localentry _start, .Lfunc_lep0-.Lfunc_gep0 + + addis 3, 2, global_a@toc@ha + addi 3, 3, global_a@toc@l + li 0,1 + lwa 3, 0(3) + sc +.size _start,.-_start + +# Verify the relocations that get emitted for the global variable are the +# expected ones. +# RELOCS: Relocations [ +# RELOCS-NEXT: .rela.text { +# RELOCS: 0x8 R_PPC64_TOC16_HA global_a 0x0 +# RELOCS: 0xC R_PPC64_TOC16_LO global_a 0x0 + +# Want to check _start for the values used to build the offset from the TOC base +# to global_a. The .TOC. symbol is expected at address 0x10030000, and the +# TOC base is address-of(.TOC.) + 0x8000. The expected offset is: +# 0x10020000(global_a) - 0x10038000(Toc base) = -0x18000(Offset) +# which gets materialized into r3 as ((-1 << 16) - 32768). + +# CHECK: Disassembly of section .text: +# CHECK-NEXT: _start: +# CHECK: 10010008: ff ff 62 3c addis 3, 2, -1 +# CHECK-NEXT: 1001000c: 00 80 63 38 addi 3, 3, -32768 + +# CHECK: Disassembly of section .data: +# CHECK-NEXT: global_a: +# CHECK-NEXT: 10020000: 29 00 00 00 + +# CHECK: Disassembly of section .got: +# CHECK-NEXT: .got: +# CHECK-NEXT: 10030000: 00 80 03 10 |
