Write the line info to .debug_line.
authorRafael Espindola <rafael.espindola@gmail.com>
Mon, 1 Nov 2010 17:07:14 +0000 (17:07 +0000)
committerRafael Espindola <rafael.espindola@gmail.com>
Mon, 1 Nov 2010 17:07:14 +0000 (17:07 +0000)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117930 91177308-0d34-0410-b5e6-96231b3b80d8

lib/MC/MCELFStreamer.cpp
test/MC/ELF/debug-line.s [new file with mode: 0644]

index 7252c90c17633e880abe68d2502cff1b37a78fe6..44c897b55599bce4b837d881afc3e11c3fd342f4 100644 (file)
@@ -511,6 +511,15 @@ void MCELFStreamer::EmitInstToData(const MCInst &Inst) {
 }
 
 void MCELFStreamer::Finish() {
+  // FIXME: duplicated code with the MachO streamer.
+  // Dump out the dwarf file & directory tables and line tables.
+  if (getContext().hasDwarfFiles()) {
+    const MCSection *DwarfLineSection =
+      getContext().getELFSection(".debug_line", 0, 0,
+                                 SectionKind::getDataRelLocal());
+    MCDwarfFileTable::Emit(this, DwarfLineSection);
+  }
+
   for (std::vector<LocalCommon>::const_iterator i = LocalCommons.begin(),
                                                 e = LocalCommons.end();
        i != e; ++i) {
diff --git a/test/MC/ELF/debug-line.s b/test/MC/ELF/debug-line.s
new file mode 100644 (file)
index 0000000..5ef7297
--- /dev/null
@@ -0,0 +1,22 @@
+// RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - | elf-dump  --dump-section-data | FileCheck %s
+
+// Test that .debug_line is populated.
+
+// CHECK:     (('sh_name', 0x00000031) # '.debug_line'
+// CHECK-NEXT: ('sh_type', 0x00000001)
+// CHECK-NEXT: ('sh_flags', 0x00000000)
+// CHECK-NEXT: ('sh_addr', 0x00000000)
+// CHECK-NEXT: ('sh_offset', 0x00000044)
+// CHECK-NEXT: ('sh_size', 0x00000037)
+// CHECK-NEXT: ('sh_link', 0x00000000)
+// CHECK-NEXT: ('sh_info', 0x00000000)
+// CHECK-NEXT: ('sh_addralign', 0x00000001)
+// CHECK-NEXT: ('sh_entsize', 0x00000000)
+// CHECK-NEXT: ('_section_data', '33000000 02001c00 00000101 fb0e0d00 01010101 00000001 00000100 666f6f2e 63000000 00000009 02000000 00000000 00150204 000101')
+
+       .section        .debug_line,"",@progbits
+       .text
+
+       .file 1 "foo.c"
+       .loc 1 4 0
+       subq    $8, %rsp