derek.holloway
7502bf64a4
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50 lines
2.5 KiB
ArmAsm
50 lines
2.5 KiB
ArmAsm
# REQUIRES: x86
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# RUN: llvm-mc -filetype=obj -triple=x86_64-linux %s -o %t.o
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# RUN: echo "SECTIONS { .data 0x4000 : {*(.data)} .dynsym 0x2000 : {*(.dynsym)} .dynstr : {*(.dynstr)} }" > %t.script
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# RUN: ld.lld --hash-style=sysv -o %t.so --script %t.script %t.o -shared
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# RUN: llvm-objdump --section-headers %t.so | FileCheck %s
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# Note: how the layout is done:
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# we need to layout 2 segments, each contains sections:
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# seg1: .data .dynamic
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# seg2: .dynsym .dynstr .text .hash
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# for each segment, we start from the first section, regardless
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# whether it is an orphan or not (sections that are not listed in the
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# linkerscript are orphans):
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# for seg1, we assign address: .data(0x4000), .dynamic(0x4008)
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# for seg2, we assign address: .dynsym(0x2000), .dynstr(0x2018) ...
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# .dynsym is not an orphan, so we take address from script, we assign
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# .dynstr current address cursor, which is the end # of .dynsym and so
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# on for later sections.
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# Also note, it is absolutely *illegal* to have section addresses of
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# the same segment in none-increasing order, authors of linker scripts
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# must take responsibility to make sure this does not happen.
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# CHECK: Sections:
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# CHECK-NEXT: Idx Name Size VMA Type
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# CHECK-NEXT: 0 00000000 0000000000000000
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# CHECK-NEXT: 1 .dynamic 00000060 0000000000000000
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# CHECK-NEXT: 2 .data 00000008 0000000000004000
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# CHECK-NEXT: 3 .dynsym 00000018 0000000000002000
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# CHECK-NEXT: 4 .dynstr 00000001 0000000000002018
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# CHECK-NEXT: 5 .hash 00000010 000000000000201c
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# CHECK-NEXT: 6 .text 00000008 000000000000202c
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# RUN: ld.lld -e 0 -o %t --script %t.script %t.o --fatal-warnings
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# RUN: llvm-readelf -Sl %t | FileCheck %s --check-prefix=CHECK1
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# CHECK1: Name Type Address Off Size ES Flg Lk Inf Al
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# CHECK1-NEXT: NULL 0000000000000000 000000 000000 00 0 0 0
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# CHECK1-NEXT: .text PROGBITS 0000000000000000 001000 000008 00 AX 0 0 4
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# CHECK1-NEXT: .data PROGBITS 0000000000004000 002000 000008 00 WA 0 0 1
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# CHECK1: Program Headers:
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# CHECK1-NEXT: Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align
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# CHECK1-NEXT: LOAD 0x001000 0x0000000000000000 0x0000000000000000 0x000008 0x000008 R E 0x1000
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# CHECK1-NEXT: LOAD 0x002000 0x0000000000004000 0x0000000000004000 0x000008 0x000008 RW 0x1000
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.quad 0
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.data
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.quad 0
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