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
65 lines
1.8 KiB
ArmAsm
65 lines
1.8 KiB
ArmAsm
// REQUIRES: x86
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.cfi_startproc
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.cfi_personality 0x1b, bar
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.cfi_endproc
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.global bar
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.hidden bar
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bar:
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ret
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// RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
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// Check the size of the CIE (0x18 + 4) and FDE (0x10 + 4)
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// RUN: llvm-readobj -s -section-data %t.o | FileCheck --check-prefix=OBJ %s
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// OBJ: Name: .eh_frame
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// OBJ-NEXT: Type:
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// OBJ-NEXT: Flags [
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// OBJ-NEXT: SHF_ALLOC
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// OBJ-NEXT: ]
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// OBJ-NEXT: Address:
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// OBJ-NEXT: Offset:
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// OBJ-NEXT: Size:
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// OBJ-NEXT: Link:
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// OBJ-NEXT: Info:
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// OBJ-NEXT: AddressAlignment:
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// OBJ-NEXT: EntrySize:
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// OBJ-NEXT: SectionData (
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// OBJ-NEXT: 0000: 18000000 00000000 017A5052 00017810
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// OBJ-NEXT: 0010: 061B0000 00001B0C 07089001 10000000
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// OBJ-NEXT: 0020: 20000000 00000000 00000000 00000000
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// OBJ-NEXT: )
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// RUN: ld.lld --hash-style=sysv %t.o -no-rosegment -o %t -shared
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// Check that .eh_frame is in the same segment as .text
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// RUN: llvm-readobj -l --elf-output-style=GNU %t | FileCheck --check-prefix=PHDR %s
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// PHDR: Segment Sections
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// PHDR: .eh_frame {{.*}}.text
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// Check that the CIE and FDE are padded with 0x00 and not 0xCC when the
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// .eh_frame section is placed in the executable segment
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// RUN: llvm-readobj -s -section-data %t | FileCheck %s
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// CHECK: Name: .eh_frame
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// CHECK-NEXT: Type:
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// CHECK-NEXT: Flags
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// CHECK-NEXT: SHF_ALLOC
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// CHECK-NEXT: ]
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// CHECK-NEXT: Address:
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// CHECK-NEXT: Offset:
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// CHECK-NEXT: Size:
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// CHECK-NEXT: Link:
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// CHECK-NEXT: Info:
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// CHECK-NEXT: AddressAlignment:
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// CHECK-NEXT: EntrySize:
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// CHECK-NEXT: SectionData (
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// CHECK-NEXT: 0000: 1C000000 00000000 017A5052 00017810
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// CHECK-NEXT: 0010: 061B2A00 00001B0C 07089001 00000000
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// CHECK-NEXT: 0020: 14000000 24000000 14000000 00000000
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// CHECK-NEXT: 0030: 00000000 00000000
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// CHECK-NEXT: )
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