From b790a17efba26f4365b5ffb847dd53fde063c48d Mon Sep 17 00:00:00 2001 From: Rafael Espindola Date: Wed, 29 Dec 2010 00:09:59 +0000 Subject: [PATCH] Initial .cfi_offset implementation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122611 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/MC/MCStreamer.cpp | 7 +++++++ test/MC/ELF/cfi-offset.s | 42 ++++++++++++++++++++++++++++++++++++++++ 2 files changed, 49 insertions(+) create mode 100644 test/MC/ELF/cfi-offset.s diff --git a/lib/MC/MCStreamer.cpp b/lib/MC/MCStreamer.cpp index 9a85707590c..f5e0d20e098 100644 --- a/lib/MC/MCStreamer.cpp +++ b/lib/MC/MCStreamer.cpp @@ -191,6 +191,13 @@ bool MCStreamer::EmitCFIDefCfaRegister(int64_t Register) { bool MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) { EnsureValidFrame(); + MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); + MCSymbol *Label = getContext().CreateTempSymbol(); + EmitLabel(Label); + MachineLocation Dest(Register, Offset); + MachineLocation Source(Register, Offset); + MCCFIInstruction Instruction(Label, Dest, Source); + CurFrame->Instructions.push_back(Instruction); return false; } diff --git a/test/MC/ELF/cfi-offset.s b/test/MC/ELF/cfi-offset.s new file mode 100644 index 00000000000..ec26464f18e --- /dev/null +++ b/test/MC/ELF/cfi-offset.s @@ -0,0 +1,42 @@ +// RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - | elf-dump --dump-section-data | FileCheck %s + +f: + .cfi_startproc + nop + .cfi_offset 6, -16 + nop + .cfi_endproc + +// CHECK: (('sh_name', 0x00000012) # '.eh_frame' +// CHECK-NEXT: ('sh_type', 0x00000001) +// CHECK-NEXT: ('sh_flags', 0x00000002) +// CHECK-NEXT: ('sh_addr', 0x00000000) +// CHECK-NEXT: ('sh_offset', 0x00000048) +// CHECK-NEXT: ('sh_size', 0x00000030) +// CHECK-NEXT: ('sh_link', 0x00000000) +// CHECK-NEXT: ('sh_info', 0x00000000) +// CHECK-NEXT: ('sh_addralign', 0x00000008) +// CHECK-NEXT: ('sh_entsize', 0x00000000) +// CHECK-NEXT: ('_section_data', '14000000 00000000 017a5200 01781001 1b0c0708 90010000 14000000 1c000000 00000000 02000000 00418602 00000000') +// CHECK-NEXT: ), + + +// CHECK: (('sh_name', 0x00000036) # '.rela.eh_frame' +// CHECK-NEXT: ('sh_type', 0x00000004) +// CHECK-NEXT: ('sh_flags', 0x00000000) +// CHECK-NEXT: ('sh_addr', 0x00000000) +// CHECK-NEXT: ('sh_offset', 0x00000158) +// CHECK-NEXT: ('sh_size', 0x00000018) +// CHECK-NEXT: ('sh_link', 0x00000006) +// CHECK-NEXT: ('sh_info', 0x00000004) +// CHECK-NEXT: ('sh_addralign', 0x00000008) +// CHECK-NEXT: ('sh_entsize', 0x00000018) +// CHECK-NEXT: ('_relocations', [ +// CHECK-NEXT: # Relocation 0x00000000 +// CHECK-NEXT: (('r_offset', 0x00000020) +// CHECK-NEXT: ('r_sym', 0x00000002) +// CHECK-NEXT: ('r_type', 0x00000002) +// CHECK-NEXT: ('r_addend', 0x00000000) +// CHECK-NEXT: ), +// CHECK-NEXT: ]) +// CHECK-NEXT: ), -- 2.34.1