ppc64-long-branch.s
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# REQUIRES: ppc
# RUN: echo 'SECTIONS { \
# RUN: .text_low 0x2000: { *(.text_low) } \
# RUN: .text_high 0x2002000 : { *(.text_high) } \
# RUN: }' > %t.script
# RUN: llvm-mc -filetype=obj -triple=ppc64le %s -o %t.o
# RUN: ld.lld -T %t.script %t.o -o %t
# RUN: llvm-readelf -S -r %t | FileCheck --check-prefix=SEC %s
# RUN: llvm-readelf -x .branch_lt %t | FileCheck --check-prefix=BRANCH-LE %s
# RUN: llvm-objdump -d --no-show-raw-insn %t | FileCheck %s
# RUN: llvm-nm --no-sort %t | FileCheck --check-prefix=NM %s
# RUN: llvm-mc -filetype=obj -triple=ppc64 %s -o %t.o
# RUN: ld.lld -T %t.script %t.o -o %t
# RUN: llvm-readelf -S -r %t | FileCheck --check-prefix=SEC %s
# RUN: llvm-readelf -x .branch_lt %t | FileCheck --check-prefix=BRANCH-BE %s
# RUN: llvm-objdump -d --no-show-raw-insn %t | FileCheck %s
# RUN: llvm-nm --no-sort %t | FileCheck --check-prefix=NM %s
# SEC: Name Type Address Off Size ES Flg Lk Inf Al
# SEC: .got PROGBITS 0000000002002030 2002030 000008 00 WA 0 0 8
# SEC: .branch_lt PROGBITS 0000000002002038 2002038 000018 00 WA 0 0 8
# SEC: There are no relocations in this file.
## high@localentry (high+8), .text_high+16 and .text_low+8
# BRANCH-LE: 0x02002038 08200002 00000000 10200002 00000000
# BRANCH-LE-NEXT: 0x02002048 08200000 00000000
# BRANCH-BE: 0x02002038 00000000 02002008 00000000 02002010
# BRANCH-BE-NEXT: 0x02002048 00000000 00002008
# CHECK: <_start>:
# CHECK-NEXT: 2000: bl 0x2020
# CHECK-NEXT: bl 0x2020
# CHECK-NEXT: bl 0x2020
# CHECK-NEXT: bl 0x2002008
## &.branch_lt[0] - .TOC. = .branch_lt - (.got+0x8000) = -32760
# CHECK: <__long_branch_high>:
# CHECK-NEXT: 2020: addis 12, 2, 0
# CHECK-NEXT: ld 12, -32760(12)
# CHECK-NEXT: mtctr 12
# CHECK-NEXT: bctr
## &.branch_lt[1] - .TOC. = .branch_lt - (.got+0x8000) = -32752
# CHECK: <__long_branch_>:
# CHECK-NEXT: 2030: addis 12, 2, 0
# CHECK-NEXT: ld 12, -32752(12)
# CHECK-NEXT: mtctr 12
# CHECK-NEXT: bctr
.section .text_low, "ax", %progbits
.globl _start
_start:
bl high # Need a thunk
bl high # Need a thunk
bl high # Need a thunk
bl high
bl .text_high+16 # Need a thunk
blr
# CHECK: Disassembly of section .text_high:
# CHECK-EMPTY:
# CHECK-NEXT: <high>:
# CHECK-NEXT: 2002000: addis 2, 12, 1
# CHECK-NEXT: addi 2, 2, -32720
# CHECK-NEXT: bl 0x2008
# CHECK-NEXT: bl 0x2002020
# CHECK: <__long_branch_>:
# CHECK-NEXT: 2002020: addis 12, 2, 0
# CHECK-NEXT: ld 12, -32744(12)
# CHECK-NEXT: mtctr 12
# CHECK-NEXT: bctr
.section .text_high, "ax", %progbits
.globl high
high:
addis 2, 12, .TOC.-high@ha
addi 2, 2, .TOC.-high@l
.localentry high, 8
bl .text_low+8
bl .text_low+8 # Need a thunk
blr
# NM: d .TOC.
# NM-NEXT: t __long_branch_high
# NM-NEXT: t __long_branch_{{$}}
# NM-NEXT: t __long_branch_{{$}}
# NM-NEXT: T _start
# NM-NEXT: T high