derek.holloway
7502bf64a4
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128 lines
4.6 KiB
ArmAsm
128 lines
4.6 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: llvm-mc -filetype=obj -triple=x86_64 bss.s -o bss.o
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## -z noseparate-code is the default: text segment is not tail padded.
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# RUN: ld.lld a.o -o out
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# RUN: llvm-readobj -l out | FileCheck %s --check-prefixes=CHECK,NOPAD
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# RUN: ld.lld a.o -z noseparate-code -z common-page-size=512 -o out
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# RUN: llvm-readobj -l out | FileCheck %s --check-prefixes=CHECK,NOPAD
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## -z separate-code pads the tail of text segment with traps.
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## Make common-page-size smaller than max-page-size.
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## Check that we use max-page-size instead of common-page-size for padding.
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# RUN: ld.lld a.o -z separate-code -z common-page-size=512 -o out
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# RUN: llvm-readobj -l out | FileCheck %s --check-prefixes=CHECK,PAD
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# RUN: od -Ax -x -N16 -j0x1ff0 out | FileCheck %s --check-prefix=FILL
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## -z separate-loadable-segments pads all segments, including the text segment.
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# RUN: ld.lld a.o -z separate-loadable-segments -z common-page-size=512 -o out
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# RUN: llvm-readobj -l out | FileCheck %s --check-prefixes=CHECK,PAD
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# RUN: od -Ax -x -N16 -j0x1ff0 out | FileCheck %s --check-prefix=FILL
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# RUN: ld.lld a.o -z separate-code -z noseparate-code -z common-page-size=512 -o out
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# RUN: llvm-readobj -l out | FileCheck %s --check-prefixes=CHECK,NOPAD
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# CHECK: ProgramHeader {
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# CHECK: Type: PT_LOAD
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# PAD: Offset: 0x1000
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# NOPAD: Offset: 0x120
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# CHECK-NEXT: VirtualAddress:
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# CHECK-NEXT: PhysicalAddress:
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# PAD-NEXT: FileSize: 4096
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# NOPAD-NEXT: FileSize: 1
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# CHECK-NEXT: MemSize:
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# CHECK-NEXT: Flags [
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# CHECK-NEXT: PF_R
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# CHECK-NEXT: PF_X
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# CHECK-NEXT: ]
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## Check that executable page is filled with traps at its end.
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# FILL: {{001ff0|001FF0}} cccc cccc cccc cccc cccc cccc cccc cccc
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## There is a single RWX segment. Test that p_memsz is not truncated to p_filesz.
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# RUN: ld.lld a.o bss.o -z separate-loadable-segments -T rwx.lds -z max-page-size=64 -o rwx
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# RUN: llvm-readelf -l rwx | FileCheck %s --check-prefix=RWX
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# RWX: Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align
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# RWX-NEXT: LOAD 0x000080 0x0000000000000000 0x0000000000000000 0x000040 0x000404 RWE 0x40
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# RUN: ld.lld a.o bss.o -z separate-loadable-segments --omagic -o omagic
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# RUN: llvm-readelf -l omagic | FileCheck %s --check-prefix=OMAGIC
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# OMAGIC: Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align
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# OMAGIC-NEXT:LOAD 0x0000b0 0x00000000002000b0 0x00000000002000b0 0x000004 0x000404 RWE 0x4
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## Test that gaps between sections within an executable segment are filled with traps.
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# RUN: llvm-mc -filetype=obj -triple=x86_64 gap.s -o gap.o
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# RUN: ld.lld gap.o -z separate-code -z max-page-size=0x1000 -o gap.out
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## .text is at offset 0x1000, .text2 is aligned to 16 bytes at 0x1010.
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## The gap between them should be filled with 0xcc.
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# RUN: od -Ax -t x1 -v -N32 -j0x1000 gap.out | FileCheck %s --check-prefix=GAP
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# GAP: 001000 90 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc
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# GAP-NEXT: 001010 90 cc
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## Test multiple gaps with various alignments.
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## Sections: .text (1 byte) -> .text2 (align 8) -> .text3 (align 32) -> .text4 (align 128)
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# RUN: llvm-mc -filetype=obj -triple=x86_64 multi-gap.s -o multi-gap.o
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# RUN: ld.lld multi-gap.o -z separate-code -z max-page-size=0x1000 -o multi-gap.out
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# RUN: od -Ax -t x1 -v -N144 -j0x1000 multi-gap.out | FileCheck %s --check-prefix=MGAP
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## .text at 0x1000, .text2 at 0x1008 (aligned to 8)
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# MGAP: 001000 90 cc cc cc cc cc cc cc 90 cc cc cc cc cc cc cc
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## gap from 0x1009 to 0x1020, .text3 at 0x1020 (aligned to 32)
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# MGAP-NEXT: 001010 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc
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# MGAP-NEXT: 001020 90 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc
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## gap from 0x1021 to 0x1080
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# MGAP-NEXT: 001030 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc
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# MGAP-NEXT: 001040 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc
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# MGAP-NEXT: 001050 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc
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# MGAP-NEXT: 001060 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc
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# MGAP-NEXT: 001070 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc
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## .text4 at 0x1080 (aligned to 128)
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# MGAP-NEXT: 001080 90 cc
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#--- a.s
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.globl _start
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_start:
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nop
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#--- bss.s
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.bss
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.space 1024
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#--- gap.s
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.globl _start
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.section .text,"ax"
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_start:
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nop
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.section .text2,"ax"
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.p2align 4
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nop
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#--- multi-gap.s
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.globl _start
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.section .text,"ax"
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_start:
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nop
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.section .text2,"ax"
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.p2align 3
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nop
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.section .text3,"ax"
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.p2align 5
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nop
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.section .text4,"ax"
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.p2align 7
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nop
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#--- rwx.lds
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PHDRS { all PT_LOAD; }
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SECTIONS {
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.text : {*(.text*)} :all
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.bss : {*(.bss*)} :all
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}
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