mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-23 13:02:52 +02:00
f20f8d830f
On ELF every section can have a corresponding section symbol. When in an assembly file we have .quad .text the '.text' refers to that symbol. The way we used to handle them is to leave .text an undefined symbol until the very end when the object writer would map them to the actual section symbol. The problem with that is that anything before the end would see an undefined symbol. This could result in bad diagnostics (test/MC/AArch64/label-arithmetic-diags-elf.s), or incorrect results when using the asm streamer (est/MC/Mips/expansion-jal-sym-pic.s). Fixing this will also allow using the section symbol earlier for setting sh_link of SHF_METADATA sections. This patch includes a few hacks to avoid changing our behaviour when handling conflicts between section symbols and other symbols. I reported pr31850 to track that. llvm-svn: 293936
55 lines
2.1 KiB
ArmAsm
55 lines
2.1 KiB
ArmAsm
// RUN: llvm-mc -g -dwarf-version 2 -triple i686-pc-linux-gnu %s -filetype=obj -o - | llvm-readobj -r | FileCheck %s
|
|
// RUN: not llvm-mc -g -dwarf-version 1 -triple i686-pc-linux-gnu %s -filetype=asm -o - 2>&1 | FileCheck --check-prefix=DWARF1 %s
|
|
// RUN: llvm-mc -g -dwarf-version 2 -triple i686-pc-linux-gnu %s -filetype=asm -o - | FileCheck --check-prefix=ASM --check-prefix=DWARF2 %s
|
|
// RUN: llvm-mc -g -dwarf-version 3 -triple i686-pc-linux-gnu %s -filetype=asm -o - | FileCheck --check-prefix=ASM --check-prefix=DWARF3 %s
|
|
// RUN: llvm-mc -g -triple i686-pc-linux-gnu %s -filetype=asm -o - | FileCheck --check-prefix=ASM --check-prefix=DWARF4 %s
|
|
// RUN: not llvm-mc -g -dwarf-version 5 -triple i686-pc-linux-gnu %s -filetype=asm -o - 2>&1 | FileCheck --check-prefix=DWARF5 %s
|
|
|
|
|
|
// Test that on ELF:
|
|
// 1. the debug info has a relocation to debug_abbrev and one to to debug_line.
|
|
// 2. the debug_aranges has relocations to text and debug_line.
|
|
|
|
|
|
.text
|
|
.globl foo
|
|
.type foo, @function
|
|
.align 4
|
|
foo:
|
|
ret
|
|
.size foo, .-foo
|
|
|
|
// CHECK: Relocations [
|
|
// CHECK: Section ({{[^ ]+}}) .rel.debug_info {
|
|
// CHECK-NEXT: 0x6 R_386_32 .debug_abbrev 0x0
|
|
// CHECK-NEXT: 0xC R_386_32 .debug_line 0x0
|
|
// CHECK: }
|
|
// CHECK-NEXT: Section ({{[^ ]+}}) .rel.debug_aranges {
|
|
// CHECK-NEXT: 0x6 R_386_32 .debug_info 0x0
|
|
// CHECK-NEXT: 0x10 R_386_32 .text 0x0
|
|
// CHECK-NEXT: }
|
|
// CHECK: ]
|
|
|
|
// First instance of the section is just to give it a label for debug_aranges to refer to
|
|
// ASM: .section .debug_info
|
|
|
|
// ASM: .section .debug_abbrev
|
|
// ASM-NEXT: [[ABBREV_LABEL:.Ltmp[0-9]+]]
|
|
|
|
// Second instance of the section has the CU
|
|
// ASM: .section .debug_info
|
|
// Dwarf version
|
|
// DWARF2: .short 2
|
|
// DWARF3: .short 3
|
|
// DWARF4: .short 4
|
|
// ASM-NEXT: .long [[ABBREV_LABEL]]
|
|
// First .byte 1 is the abbreviation number for the compile_unit abbrev
|
|
// ASM: .byte 1
|
|
// ASM-NEXT: .long [[LINE_LABEL:.L[a-z0-9]+]]
|
|
|
|
// ASM: .section .debug_line
|
|
// ASM-NEXT: [[LINE_LABEL]]
|
|
|
|
// DWARF1: Dwarf version 1 is not supported.
|
|
// DWARF5: Dwarf version 5 is not supported.
|