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llvm-project/lld/test/ELF/ehframe-relocation.s

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[ELF] - Fixed handling relocations against zero sized .eh_frame section. The file crtbeginT.o has relocations pointing to the start of an empty .eh_frame that is known to be the first in the link. It does that to identify the start of the output .eh_frame. Handle this special case. Differential revision: http://reviews.llvm.org/D15610 llvm-svn: 256414
2015-12-25 17:51:42 +08:00
// REQUIRES: x86
// RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
Make this test a bit stronger. Show that in addition to handling empty .eh_frame, it is merged with any regular .eh_frame. llvm-svn: 265588
2016-04-07 03:38:26 +08:00
// RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %p/Inputs/ehframe-relocation.s -o %t2.o
// RUN: ld.lld %t.o %t2.o -o %t
[test] Change llvm-readobj -long-option to --long-option or well-known short options. NFC Also change some options that have different semantics (cause confusion) in llvm-readelf mode: -s => -S -t => --symbols -sd => --section-data llvm-svn: 359651
2019-05-01 13:49:01 +08:00
// RUN: llvm-readobj -S %t | FileCheck %s
[ELF] - Fixed handling relocations against zero sized .eh_frame section. The file crtbeginT.o has relocations pointing to the start of an empty .eh_frame that is known to be the first in the link. It does that to identify the start of the output .eh_frame. Handle this special case. Differential revision: http://reviews.llvm.org/D15610 llvm-svn: 256414
2015-12-25 17:51:42 +08:00
// RUN: llvm-objdump -d %t | FileCheck --check-prefix=DISASM %s
// CHECK: Name: .eh_frame
Do not propagate section name and attributes to .eh_frame. .eh_frame is always ".eh_frame" and its attribute is fixed. No need to copy from inputs to outputs. GNU gold also sets SHT_PROGBITS. llvm-svn: 270443
2016-05-23 23:12:41 +08:00
// CHECK-NEXT: Type: SHT_PROGBITS
[ELF] - Fixed handling relocations against zero sized .eh_frame section. The file crtbeginT.o has relocations pointing to the start of an empty .eh_frame that is known to be the first in the link. It does that to identify the start of the output .eh_frame. Handle this special case. Differential revision: http://reviews.llvm.org/D15610 llvm-svn: 256414
2015-12-25 17:51:42 +08:00
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: ]
lld: Default image base address to 0x200000 on x86-64 Align to the large page size (known as a superpage or huge page). FreeBSD automatically promotes large, superpage-aligned allocations. Differential Revision: https://reviews.llvm.org/D27042 llvm-svn: 287782
2016-11-24 01:44:02 +08:00
// CHECK-NEXT: Address: 0x200120
[ELF] - Fixed handling relocations against zero sized .eh_frame section. The file crtbeginT.o has relocations pointing to the start of an empty .eh_frame that is known to be the first in the link. It does that to identify the start of the output .eh_frame. Handle this special case. Differential revision: http://reviews.llvm.org/D15610 llvm-svn: 256414
2015-12-25 17:51:42 +08:00
// CHECK-NEXT: Offset:
Add a CIE with length 0 unconditionally. Summary: This is not technically required, but glibc unwind-dw2-fde.c classify_object_over_fdes expects there is a CIE record length 0 as a terminator. Reviewers: ruiu, espindola Subscribers: emaste, arichardson, llvm-commits Differential Revision: https://reviews.llvm.org/D46566 llvm-svn: 331708
2018-05-08 09:19:16 +08:00
// CHECK-NEXT: Size: 52
Make this test a bit stronger. Show that in addition to handling empty .eh_frame, it is merged with any regular .eh_frame. llvm-svn: 265588
2016-04-07 03:38:26 +08:00
// CHECK-NOT: .eh_frame
[ELF] - Fixed handling relocations against zero sized .eh_frame section. The file crtbeginT.o has relocations pointing to the start of an empty .eh_frame that is known to be the first in the link. It does that to identify the start of the output .eh_frame. Handle this special case. Differential revision: http://reviews.llvm.org/D15610 llvm-svn: 256414
2015-12-25 17:51:42 +08:00
lld: Default image base address to 0x200000 on x86-64 Align to the large page size (known as a superpage or huge page). FreeBSD automatically promotes large, superpage-aligned allocations. Differential Revision: https://reviews.llvm.org/D27042 llvm-svn: 287782
2016-11-24 01:44:02 +08:00
// 0x200120 = 2097440
// 0x200120 + 5 = 2097445
[ELF] - Fixed handling relocations against zero sized .eh_frame section. The file crtbeginT.o has relocations pointing to the start of an empty .eh_frame that is known to be the first in the link. It does that to identify the start of the output .eh_frame. Handle this special case. Differential revision: http://reviews.llvm.org/D15610 llvm-svn: 256414
2015-12-25 17:51:42 +08:00
// DISASM: Disassembly of section .text:
// DISASM-NEXT: _start:
lld: Default image base address to 0x200000 on x86-64 Align to the large page size (known as a superpage or huge page). FreeBSD automatically promotes large, superpage-aligned allocations. Differential Revision: https://reviews.llvm.org/D27042 llvm-svn: 287782
2016-11-24 01:44:02 +08:00
// DISASM-NEXT: 201000: {{.*}} movq 2097440, %rax
// DISASM-NEXT: 201008: {{.*}} movq 2097445, %rax
[ELF] - Fixed handling relocations against zero sized .eh_frame section. The file crtbeginT.o has relocations pointing to the start of an empty .eh_frame that is known to be the first in the link. It does that to identify the start of the output .eh_frame. Handle this special case. Differential revision: http://reviews.llvm.org/D15610 llvm-svn: 256414
2015-12-25 17:51:42 +08:00
.section .eh_frame,"ax",@unwind
.section .text
.globl _start
_start:
movq .eh_frame, %rax
movq .eh_frame + 5, %rax