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
24 lines
790 B
Plaintext
24 lines
790 B
Plaintext
# REQUIRES: x86
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# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux /dev/null -o %t.o
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# RUN: ld.lld -o %t.so --script %s %t.o -shared
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# RUN: llvm-objdump -t -h %t.so | FileCheck %s
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SECTIONS {
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. = . + 4;
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.text : {
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*(.text)
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foo1 = ADDR(.text) + 1; bar1 = 1 + ADDR(.text);
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foo2 = ADDR(.text) & 1; bar2 = 1 & ADDR(.text);
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foo3 = ADDR(.text) | 1; bar3 = 1 | ADDR(.text);
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}
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};
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# CHECK: 5 .text 00000000 000000000000014c
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# CHECK: 000000000000014d .text 00000000 foo1
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# CHECK: 000000000000014d .text 00000000 bar1
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# CHECK: 0000000000000000 .text 00000000 foo2
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# CHECK: 0000000000000000 .text 00000000 bar2
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# CHECK: 000000000000014d .text 00000000 foo3
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# CHECK: 000000000000014d .text 00000000 bar3
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