68fa4e8c34
Summary: Currently when --no-rosegment is specified or a linker script with SECTIONS command is used, .rodata (A) .text (AX) are assigned the same rank and .rodata may be placed after .text . This increases the gap between .text and .bss and can cause pc-relative relocation overflow (e.g. gcc crtbegin.o crtbegin.S have R_X86_64_PC32 relocation from .text to .bss). This patch makes SingleRoRx affect only segment layout, not section layout. As a consequence, .rodata will be placed before .text regardless of SingleRoRx. Reviewers: espindola, ruiu, grimar, echristo, javed.absar Subscribers: emaste, arichardson, llvm-commits Differential Revision: https://reviews.llvm.org/D48405 llvm-svn: 335627
33 lines
905 B
ArmAsm
33 lines
905 B
ArmAsm
# REQUIRES: x86
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# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t1.o
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# RUN: echo "SECTIONS { A = . - 0x10; B = A + 0x1; }" > %t.script
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# RUN: ld.lld -shared %t1.o --script %t.script -o %t
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# RUN: llvm-objdump -d %t | FileCheck %s --check-prefix=DUMP
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# RUN: llvm-readobj -t %t | FileCheck %s --check-prefix=SYMBOL
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# B = A + 0x1 = -0x10 + 0x1 = -0xf -> 0xFFFFFFFFFFFFFFF1
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# B - (0x94+6) = -0xf - (0x94+6) = -169
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# DUMP: Disassembly of section .text:
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# DUMP-NEXT: foo:
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# DUMP-NEXT: 94: {{.*}} -169(%rip), %eax
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# SYMBOL: Symbol {
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# SYMBOL: Name: B
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# SYMBOL-NEXT: Value: 0xFFFFFFFFFFFFFFF1
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# SYMBOL-NEXT: Size: 0
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# SYMBOL-NEXT: Binding: Local
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# SYMBOL-NEXT: Type: None
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# SYMBOL-NEXT: Other [
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# SYMBOL-NEXT: STV_HIDDEN
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# SYMBOL-NEXT: ]
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# SYMBOL-NEXT: Section: .dynsym
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# SYMBOL-NEXT: }
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.text
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.globl foo
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.type foo, @function
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foo:
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movl B(%rip), %eax
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.hidden B
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