derek.holloway
7502bf64a4
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90 lines
3.6 KiB
ArmAsm
90 lines
3.6 KiB
ArmAsm
# REQUIRES: x86
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# RUN: rm -rf %t && split-file %s %t && cd %t
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# RUN: llvm-mc -filetype=obj -triple=x86_64 a.s -o a.o
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# RUN: ld.lld -z keep-data-section-prefix -T x.lds a.o -o out1
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# RUN: llvm-readelf -l out1 | FileCheck --check-prefixes=SEG,LS %s
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# RUN: llvm-readelf -S out1 | FileCheck %s --check-prefix=CHECK-LS
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# RUN: ld.lld -z keep-data-section-prefix a.o -o out2
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# RUN: llvm-readelf -l out2 | FileCheck --check-prefixes=SEG,PRE %s
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# RUN: llvm-readelf -S out2 | FileCheck %s --check-prefix=CHECK-PRE
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# RUN: ld.lld a.o -o out3
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# RUN: llvm-readelf -l out3 | FileCheck --check-prefixes=SEG,PRE %s
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# RUN: llvm-readelf -S out3 | FileCheck %s --check-prefix=CHECK-PRE
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# RUN: not ld.lld -T x.lds a.o 2>&1 | FileCheck %s
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# CHECK: error: section: .relro_padding is not contiguous with other relro sections
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## The first RW PT_LOAD segment has FileSiz 0x126f (0x1000 + 0x200 + 0x60 + 0xf),
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## and its p_offset p_vaddr p_paddr p_filesz should match PT_GNU_RELRO.
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# Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align
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# SEG: LOAD 0x0001c8 0x00000000002011c8 0x00000000002011c8 0x000001 0x000001 R E 0x1000
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# SEG-NEXT: LOAD 0x0001c9 0x00000000002021c9 0x00000000002021c9 0x00126f 0x001e37 RW 0x1000
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# SEG-NEXT: LOAD 0x001438 0x0000000000204438 0x0000000000204438 0x000001 0x000002 RW 0x1000
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# SEG-NEXT: GNU_RELRO 0x0001c9 0x00000000002021c9 0x00000000002021c9 0x00126f 0x001e37 R 0x1
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# SEG-NEXT: GNU_STACK 0x000000 0x0000000000000000 0x0000000000000000 0x000000 0x000000 RW 0x0
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## Input to output mapping per linker script
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## .data.rel.ro.split -> .data.rel.ro
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## .data.rel.ro -> .data.rel.ro
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## .data.rel.ro.hot -> .data.rel.ro.hot
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## .data.rel.ro.unlikely -> .data.rel.ro.unlikely
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# LS: .text
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# LS-NEXT: .data.rel.ro.hot .data.rel.ro .data.rel.ro.unlikely .relro_padding
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# LS-NEXT: .data .bss
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# [Nr] Name Type Address Off Size
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# CHECK-LS: .data.rel.ro.hot PROGBITS 00000000002021c9 0001c9 00000f
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# CHECK-LS-NEXT: .data.rel.ro PROGBITS 00000000002021d8 0001d8 000260
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# CHECK-LS-NEXT: .data.rel.ro.unlikely PROGBITS 0000000000202438 000438 001000
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# CHECK-LS-NEXT: .relro_padding NOBITS 0000000000203438 001438 000bc8
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# CHECK-LS-NEXT: .data PROGBITS 0000000000204438 001438 000001
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# CHECK-LS-NEXT: .bss NOBITS 0000000000204439 001439 000001
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## Linker script is not provided to map data sections.
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## So all input sections with prefix .data.rel.ro will map to .data.rel.ro in the output.
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# PRE: .text
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# PRE-NEXT: .data.rel.ro .relro_padding
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# PRE-NEXT: .data .bss
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# [Nr] Name Type Address Off Size
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# CHECK-PRE: .data.rel.ro PROGBITS 00000000002021c9 0001c9 00126f
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# CHECK-PRE-NEXT: .relro_padding NOBITS 0000000000203438 001438 000bc8
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# CHECK-PRE-NEXT: .data PROGBITS 0000000000204438 001438 000001
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# CHECK-PRE-NEXT: .bss NOBITS 0000000000204439 001439 000001
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#--- x.lds
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SECTIONS {
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.data.rel.ro.hot : { *(.data.rel.ro.hot) }
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.data.rel.ro : { .data.rel.ro }
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.data.rel.ro.unlikely : { *(.data.rel.ro.unlikely) }
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} INSERT AFTER .text
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#--- a.s
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.globl _start
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_start:
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ret
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.section .data.rel.ro.hot, "aw"
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.space 15
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.section .data.rel.ro, "aw"
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.space 96
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.section .data.rel.ro.split,"aw"
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.space 512
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.section .data.rel.ro.unlikely, "aw"
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.space 4096
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.section .data, "aw"
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.space 1
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.section .bss, "aw"
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.space 1
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