[llvm-commits] [llvm] r122612 - in /llvm/trunk: lib/MC/MCStreamer.cpp test/MC/ELF/cfi-def-cfa-register.s

[Rafael Espindola]

Author: rafael
Date: Tue Dec 28 18:26:06 2010
New Revision: 122612

URL: http://llvm.org/viewvc/llvm-project?rev=122612&view=rev
Log:
Implement cfi_def_cfa_register.

Added:
    llvm/trunk/test/MC/ELF/cfi-def-cfa-register.s
Modified:
    llvm/trunk/lib/MC/MCStreamer.cpp

Modified: llvm/trunk/lib/MC/MCStreamer.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/MC/MCStreamer.cpp?rev=122612&r1=122611&r2=122612&view=diff
==============================================================================
--- llvm/trunk/lib/MC/MCStreamer.cpp (original)
+++ llvm/trunk/lib/MC/MCStreamer.cpp Tue Dec 28 18:26:06 2010
@@ -186,6 +186,14 @@
 
 bool MCStreamer::EmitCFIDefCfaRegister(int64_t Register) {
   EnsureValidFrame();
+  MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
+  MCSymbol *Label = getContext().CreateTempSymbol();
+  EmitLabel(Label);
+  MachineLocation Dest(Register);
+  MachineLocation Source(MachineLocation::VirtualFP);
+  MCCFIInstruction Instruction(Label, Dest, Source);
+  CurFrame->Instructions.push_back(Instruction);
+  return false;
   return false;
 }
 

Added: llvm/trunk/test/MC/ELF/cfi-def-cfa-register.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/ELF/cfi-def-cfa-register.s?rev=122612&view=auto
==============================================================================
--- llvm/trunk/test/MC/ELF/cfi-def-cfa-register.s (added)
+++ llvm/trunk/test/MC/ELF/cfi-def-cfa-register.s Tue Dec 28 18:26:06 2010
@@ -0,0 +1,41 @@
+// 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_def_cfa_register 6
+        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 00410d06 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: ),