| # REQUIRES: ppc |
| |
| # RUN: llvm-mc -filetype=obj -triple=powerpc64le-unknown-linux %s -o %t.o |
| # RUN: llvm-readobj -r %t.o | FileCheck -check-prefix=RELOCS-LE %s |
| # RUN: ld.lld %t.o -o %t |
| # RUN: llvm-nm %t | FileCheck --check-prefix=NM %s |
| # RUN: llvm-readelf -x .got %t | FileCheck --check-prefix=HEX-LE %s |
| # RUN: llvm-objdump -d --no-show-raw-insn %t | FileCheck --check-prefix=CHECK %s |
| |
| # RUN: llvm-mc -filetype=obj -triple=powerpc64-unknown-linux %s -o %t.o |
| # RUN: llvm-readobj -r %t.o | FileCheck -check-prefix=RELOCS-BE %s |
| # RUN: ld.lld %t.o -o %t |
| # RUN: llvm-nm %t | FileCheck --check-prefix=NM %s |
| # RUN: llvm-readelf -x .got %t | FileCheck --check-prefix=HEX-BE %s |
| # RUN: llvm-objdump -d --no-show-raw-insn %t | FileCheck --check-prefix=CHECK %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-LE: Relocations [ |
| # RELOCS-LE-NEXT: .rela.text { |
| # RELOCS-LE: 0x8 R_PPC64_TOC16_HA global_a 0x0 |
| # RELOCS-LE: 0xC R_PPC64_TOC16_LO global_a 0x0 |
| |
| # RELOCS-BE: Relocations [ |
| # RELOCS-BE-NEXT: .rela.text { |
| # RELOCS-BE: 0xA R_PPC64_TOC16_HA global_a 0x0 |
| # RELOCS-BE: 0xE R_PPC64_TOC16_LO global_a 0x0 |
| |
| # The .TOC. symbol represents the TOC base address: .got + 0x8000 = 0x10028000, |
| # which is stored in the first entry of .got |
| # NM: 0000000010028000 d .TOC. |
| # NM: 0000000010030000 D global_a |
| # HEX-LE: section '.got': |
| # HEX-LE-NEXT: 0x10020000 00800210 00000000 |
| # HEX-BE: section '.got': |
| # HEX-BE-NEXT: 0x10020000 00000000 10028000 |
| |
| # r2 stores the TOC base address. To access global_a with r3, it |
| # computes the address with TOC plus an offset. |
| # The offset global_a - .TOC. = 0x10030000 - 0x10028000 = 0x8000 |
| # gets materialized as (1 << 16) - 32768. |
| # CHECK: _start: |
| # CHECK: 10010008: addis 3, 2, 1 |
| # CHECK-NEXT: 1001000c: addi 3, 3, -32768 |