libdw: Handle split dwarf debuglines.

Split DWARF .dwo files do contain a .debug_line section, but only with
the file table, there is no actual line program. Also split DWARF CU DIEs
don't have a DW_AT_stmt_list attribute. To get at the file (and dir) table
for a split unit DIE take just the files from the .debug_line section
(at offset zero). To get the full line table use the skeleton DIE (which
does have a DW_AT_stmt_list).

Signed-off-by: Mark Wielaard <[email protected]>

2 files changed, 72 insertions, 0 deletions

diff --git a/tests/ChangeLog b/tests/ChangeLog
index 05e8f26c..0370fbc6 100644
--- a/tests/ChangeLog
+++ b/tests/ChangeLog
@@ -1,3 +1,9 @@
+2018-05-18  Mark Wielaard  <[email protected]>
+
+	* run-get-files.sh: Add testcases for testfile-splitdwarf-4,
+	testfile-hello4.dwo, testfile-world4.dwo and testfile-splitdwarf-5,
+	testfile-hello5.dwo, testfile-world5.dwo.
+
 2018-05-17  Mark Wielaard  <[email protected]>
 
 	* Makefile.am (check_PROGRAMS): Add attr-integrate-skel.
diff --git a/tests/run-get-files.sh b/tests/run-get-files.sh
index a2f2373b..6f90be7d 100755
--- a/tests/run-get-files.sh
+++ b/tests/run-get-files.sh
@@ -64,4 +64,70 @@ cuhl = 11, o = 267, asz = 4, osz = 4, ncu = 2680
  file[1] = "/shoggoth/drepper/m.c"
 EOF
 
+# see tests/testfile-dwarf-45.source
+testfiles testfile-splitdwarf-4 testfile-hello4.dwo testfile-world4.dwo
+testfiles testfile-splitdwarf-5 testfile-hello5.dwo testfile-world5.dwo
+
+testrun_compare ${abs_builddir}/get-files testfile-splitdwarf-4 testfile-hello4.dwo testfile-world4.dwo <<\EOF
+cuhl = 11, o = 0, asz = 8, osz = 4, ncu = 52
+ dirs[0] = "/home/mark/src/elfutils/tests"
+ dirs[1] = "/opt/local/install/gcc/lib/gcc/x86_64-pc-linux-gnu/9.0.0/include"
+ file[0] = "???"
+ file[1] = "/home/mark/src/elfutils/tests/hello.c"
+ file[2] = "/home/mark/src/elfutils/tests/hello.h"
+ file[3] = "/opt/local/install/gcc/lib/gcc/x86_64-pc-linux-gnu/9.0.0/include/stddef.h"
+cuhl = 11, o = 26, asz = 8, osz = 4, ncu = 104
+ dirs[0] = "/home/mark/src/elfutils/tests"
+ dirs[1] = "/usr/include"
+ file[0] = "???"
+ file[1] = "/home/mark/src/elfutils/tests/world.c"
+ file[2] = "/home/mark/src/elfutils/tests/hello.h"
+ file[3] = "/usr/include/stdlib.h"
+cuhl = 11, o = 0, asz = 8, osz = 4, ncu = 414
+ dirs[0] = "/home/mark/src/elfutils/tests"
+ dirs[1] = "/opt/local/install/gcc/lib/gcc/x86_64-pc-linux-gnu/9.0.0/include"
+ file[0] = "???"
+ file[1] = "/home/mark/src/elfutils/tests/hello.c"
+ file[2] = "/home/mark/src/elfutils/tests/hello.h"
+ file[3] = "/opt/local/install/gcc/lib/gcc/x86_64-pc-linux-gnu/9.0.0/include/stddef.h"
+cuhl = 11, o = 0, asz = 8, osz = 4, ncu = 331
+ dirs[0] = "/home/mark/src/elfutils/tests"
+ dirs[1] = "/usr/include"
+ file[0] = "???"
+ file[1] = "/home/mark/src/elfutils/tests/world.c"
+ file[2] = "/home/mark/src/elfutils/tests/hello.h"
+ file[3] = "/usr/include/stdlib.h"
+EOF
+
+testrun_compare ${abs_builddir}/get-files testfile-splitdwarf-5 testfile-hello5.dwo testfile-world5.dwo <<\EOF
+cuhl = 20, o = 0, asz = 8, osz = 4, ncu = 53
+ dirs[0] = "/home/mark/src/elfutils/tests"
+ dirs[1] = "/opt/local/install/gcc/lib/gcc/x86_64-pc-linux-gnu/9.0.0/include"
+ file[0] = "/home/mark/src/elfutils/tests/hello.c"
+ file[1] = "/home/mark/src/elfutils/tests/hello.c"
+ file[2] = "/home/mark/src/elfutils/tests/hello.h"
+ file[3] = "/opt/local/install/gcc/lib/gcc/x86_64-pc-linux-gnu/9.0.0/include/stddef.h"
+cuhl = 20, o = 21, asz = 8, osz = 4, ncu = 106
+ dirs[0] = "/home/mark/src/elfutils/tests"
+ dirs[1] = "/usr/include"
+ file[0] = "/home/mark/src/elfutils/tests/world.c"
+ file[1] = "/home/mark/src/elfutils/tests/world.c"
+ file[2] = "/home/mark/src/elfutils/tests/hello.h"
+ file[3] = "/usr/include/stdlib.h"
+cuhl = 20, o = 0, asz = 8, osz = 4, ncu = 386
+ dirs[0] = "/home/mark/src/elfutils/tests"
+ dirs[1] = "/opt/local/install/gcc/lib/gcc/x86_64-pc-linux-gnu/9.0.0/include"
+ file[0] = "/home/mark/src/elfutils/tests/hello.c"
+ file[1] = "/home/mark/src/elfutils/tests/hello.c"
+ file[2] = "/home/mark/src/elfutils/tests/hello.h"
+ file[3] = "/opt/local/install/gcc/lib/gcc/x86_64-pc-linux-gnu/9.0.0/include/stddef.h"
+cuhl = 20, o = 0, asz = 8, osz = 4, ncu = 296
+ dirs[0] = "/home/mark/src/elfutils/tests"
+ dirs[1] = "/usr/include"
+ file[0] = "/home/mark/src/elfutils/tests/world.c"
+ file[1] = "/home/mark/src/elfutils/tests/world.c"
+ file[2] = "/home/mark/src/elfutils/tests/hello.h"
+ file[3] = "/usr/include/stdlib.h"
+EOF
+
 exit 0