readelf: Handle .debug_loclists.

The new DWARF5 .debug_loclists sections are like .debug_rnglists, but
plus locations. For Split Dwarf GCC generates the .debug_loclists fully
in the split .dwo file. Any references to addresses need to be resolved
through the skeleton .debug_addr section.

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

2 files changed, 564 insertions, 0 deletions

diff --git a/tests/ChangeLog b/tests/ChangeLog
index 5eb1e77f..6e366eb3 100644
--- a/tests/ChangeLog
+++ b/tests/ChangeLog
@@ -1,3 +1,7 @@
+2018-04-12  Mark Wielaard  <[email protected]>
+
+	* run-readelf-loc.sh: Add new testcases.
+
 2018-04-06  Mark Wielaard  <[email protected]>
 
 	* testfileranges5.debug.bz2: New testfile.
diff --git a/tests/run-readelf-loc.sh b/tests/run-readelf-loc.sh
index e5152df8..622cc196 100755
--- a/tests/run-readelf-loc.sh
+++ b/tests/run-readelf-loc.sh
@@ -167,4 +167,564 @@ DWARF section [34] '.debug_ranges' at offset 0xd94:
           range 12, 1a
 EOF
 
+# .debug_rnglists (DWARF5), see tests/testfile-dwarf-45.source
+testfiles testfile-dwarf-5
+testrun_compare ${abs_top_builddir}/src/readelf --debug-dump=loc testfile-dwarf-5<<\EOF
+
+DWARF section [31] '.debug_loclists' at offset 0x1c0c:
+Table at Offset 0x0:
+
+ Length:               96
+ DWARF version:         5
+ Address size:          8
+ Segment size:          0
+ Offset entries:        0
+ CU [     c] base: 0x0000000000400510 <foo>
+
+  Offset: c, Index: 0
+    offset_pair 0, a
+      0x0000000000400510 <foo>..
+      0x0000000000400519 <foo+0x9>
+        [ 0] reg5
+    offset_pair a, 34
+      0x000000000040051a <foo+0xa>..
+      0x0000000000400543 <foo+0x33>
+        [ 0] entry_value:
+             [ 0] reg5
+        [ 3] stack_value
+    end_of_list
+
+  Offset: 1a, Index: e
+    offset_pair 1b, 2d
+      0x000000000040052b <foo+0x1b>..
+      0x000000000040053c <foo+0x2c>
+        [ 0] addr 0x601038 <m>
+    end_of_list
+
+  Offset: 28, Index: 1c
+    offset_pair 1b, 21
+      0x000000000040052b <foo+0x1b>..
+      0x0000000000400530 <foo+0x20>
+        [ 0] reg5
+    end_of_list
+
+  Offset: 2e, Index: 22
+    offset_pair 1b, 27
+      0x000000000040052b <foo+0x1b>..
+      0x0000000000400536 <foo+0x26>
+        [ 0] reg5
+    offset_pair 29, 2d
+      0x0000000000400539 <foo+0x29>..
+      0x000000000040053c <foo+0x2c>
+        [ 0] reg5
+    end_of_list
+
+  Offset: 39, Index: 2d
+    offset_pair 21, 27
+      0x0000000000400531 <foo+0x21>..
+      0x0000000000400536 <foo+0x26>
+        [ 0] reg5
+    offset_pair 29, 2d
+      0x0000000000400539 <foo+0x29>..
+      0x000000000040053c <foo+0x2c>
+        [ 0] reg5
+    end_of_list
+
+  Offset: 44, Index: 38
+    offset_pair 21, 2d
+      0x0000000000400531 <foo+0x21>..
+      0x000000000040053c <foo+0x2c>
+        [ 0] reg5
+    end_of_list
+
+  Offset: 4a, Index: 3e
+    offset_pair 2d, 33
+      0x000000000040053d <foo+0x2d>..
+      0x0000000000400542 <foo+0x32>
+        [ 0] reg5
+    end_of_list
+
+  Offset: 50, Index: 44
+    offset_pair 40, 4f
+      0x0000000000400550 <baz>..
+      0x000000000040055e <baz+0xe>
+        [ 0] reg5
+    offset_pair 4f, 51
+      0x000000000040055f <baz+0xf>..
+      0x0000000000400560 <baz+0x10>
+        [ 0] entry_value:
+             [ 0] reg5
+        [ 3] stack_value
+    end_of_list
+
+  Offset: 5e, Index: 52
+    offset_pair 40, 50
+      0x0000000000400550 <baz>..
+      0x000000000040055f <baz+0xf>
+        [ 0] reg5
+    end_of_list
+
+Table at Offset 0x64:
+
+ Length:              159
+ DWARF version:         5
+ Address size:          8
+ Segment size:          0
+ Offset entries:        0
+ CU [   218] base: 000000000000000000
+
+  Offset: 70, Index: 0
+    base_address 0x400410
+      0x0000000000400410 <main>
+    offset_pair 0, 14
+      0x0000000000400410 <main>..
+      0x0000000000400423 <main+0x13>
+        [ 0] reg5
+    offset_pair 14, 20
+      0x0000000000400424 <main+0x14>..
+      0x000000000040042f <main+0x1f>
+        [ 0] entry_value:
+             [ 0] reg5
+        [ 3] stack_value
+    end_of_list
+
+  Offset: 87, Index: 17
+    base_address 0x400410
+      0x0000000000400410 <main>
+    offset_pair 0, 18
+      0x0000000000400410 <main>..
+      0x0000000000400427 <main+0x17>
+        [ 0] reg4
+    offset_pair 18, 20
+      0x0000000000400428 <main+0x18>..
+      0x000000000040042f <main+0x1f>
+        [ 0] entry_value:
+             [ 0] reg4
+        [ 3] stack_value
+    end_of_list
+
+  Offset: 9e, Index: 2e
+    start_length 0x400421, 7
+      0x0000000000400421 <main+0x11>..
+      0x0000000000400427 <main+0x17>
+        [ 0] reg0
+    end_of_list
+
+  Offset: ab, Index: 3b
+    base_address 0x400570
+      0x0000000000400570 <calc>
+    offset_pair 0, 8
+      0x0000000000400570 <calc>..
+      0x0000000000400577 <calc+0x7>
+        [ 0] reg5
+    offset_pair 8, 2b
+      0x0000000000400578 <calc+0x8>..
+      0x000000000040059a <calc+0x2a>
+        [ 0] entry_value:
+             [ 0] reg5
+        [ 3] stack_value
+    end_of_list
+
+  Offset: c2, Index: 52
+    start_length 0x400588, b
+      0x0000000000400588 <calc+0x18>..
+      0x0000000000400592 <calc+0x22>
+        [ 0] reg0
+    end_of_list
+
+  Offset: cf, Index: 5f
+    base_address 0x400588
+      0x0000000000400588 <calc+0x18>
+    offset_pair 0, 2
+      0x0000000000400588 <calc+0x18>..
+      0x0000000000400589 <calc+0x19>
+        [ 0] reg1
+    offset_pair 2, 7
+      0x000000000040058a <calc+0x1a>..
+      0x000000000040058e <calc+0x1e>
+        [ 0] reg5
+    offset_pair 7, b
+      0x000000000040058f <calc+0x1f>..
+      0x0000000000400592 <calc+0x22>
+        [ 0] entry_value:
+             [ 0] reg5
+        [ 3] deref_size 1
+        [ 5] const1u 56
+        [ 7] shl
+        [ 8] const1u 56
+        [10] shra
+        [11] stack_value
+    end_of_list
+
+  Offset: f3, Index: 83
+    base_address 0x400588
+      0x0000000000400588 <calc+0x18>
+    offset_pair 0, 2
+      0x0000000000400588 <calc+0x18>..
+      0x0000000000400589 <calc+0x19>
+        [ 0] reg1
+    offset_pair 2, b
+      0x000000000040058a <calc+0x1a>..
+      0x0000000000400592 <calc+0x22>
+        [ 0] reg5
+    end_of_list
+
+EOF
+
+# Same as above, but for DWARF4, note completely different encoding, but
+# the information is the same (check with diff -uwb).
+testfiles testfile-dwarf-4
+testrun_compare ${abs_top_builddir}/src/readelf --debug-dump=loc testfile-dwarf-4<<\EOF
+
+DWARF section [31] '.debug_loc' at offset 0x1c86:
+
+ CU [     b] base: 0x0000000000400510 <foo>
+ [     0] range 0, a
+          0x0000000000400510 <foo>..
+          0x0000000000400519 <foo+0x9>
+           [ 0] reg5
+          range a, 34
+          0x000000000040051a <foo+0xa>..
+          0x0000000000400543 <foo+0x33>
+           [ 0] GNU_entry_value:
+                [ 0] reg5
+           [ 3] stack_value
+ [    39] range 1b, 2d
+          0x000000000040052b <foo+0x1b>..
+          0x000000000040053c <foo+0x2c>
+           [ 0] addr 0x601038 <m>
+ [    64] range 1b, 21
+          0x000000000040052b <foo+0x1b>..
+          0x0000000000400530 <foo+0x20>
+           [ 0] reg5
+ [    87] range 1b, 27
+          0x000000000040052b <foo+0x1b>..
+          0x0000000000400536 <foo+0x26>
+           [ 0] reg5
+          range 29, 2d
+          0x0000000000400539 <foo+0x29>..
+          0x000000000040053c <foo+0x2c>
+           [ 0] reg5
+ [    bd] range 21, 27
+          0x0000000000400531 <foo+0x21>..
+          0x0000000000400536 <foo+0x26>
+           [ 0] reg5
+          range 29, 2d
+          0x0000000000400539 <foo+0x29>..
+          0x000000000040053c <foo+0x2c>
+           [ 0] reg5
+ [    f3] range 21, 2d
+          0x0000000000400531 <foo+0x21>..
+          0x000000000040053c <foo+0x2c>
+           [ 0] reg5
+ [   116] range 2d, 33
+          0x000000000040053d <foo+0x2d>..
+          0x0000000000400542 <foo+0x32>
+           [ 0] reg5
+ [   139] range 40, 4f
+          0x0000000000400550 <baz>..
+          0x000000000040055e <baz+0xe>
+           [ 0] reg5
+          range 4f, 51
+          0x000000000040055f <baz+0xf>..
+          0x0000000000400560 <baz+0x10>
+           [ 0] GNU_entry_value:
+                [ 0] reg5
+           [ 3] stack_value
+ [   172] range 40, 50
+          0x0000000000400550 <baz>..
+          0x000000000040055f <baz+0xf>
+           [ 0] reg5
+
+ CU [   21c] base: 000000000000000000
+ [   195] range 400410, 400424
+          0x0000000000400410 <main>..
+          0x0000000000400423 <main+0x13>
+           [ 0] reg5
+          range 400424, 400430
+          0x0000000000400424 <main+0x14>..
+          0x000000000040042f <main+0x1f>
+           [ 0] GNU_entry_value:
+                [ 0] reg5
+           [ 3] stack_value
+ [   1ce] range 400410, 400428
+          0x0000000000400410 <main>..
+          0x0000000000400427 <main+0x17>
+           [ 0] reg4
+          range 400428, 400430
+          0x0000000000400428 <main+0x18>..
+          0x000000000040042f <main+0x1f>
+           [ 0] GNU_entry_value:
+                [ 0] reg4
+           [ 3] stack_value
+ [   207] range 400421, 400428
+          0x0000000000400421 <main+0x11>..
+          0x0000000000400427 <main+0x17>
+           [ 0] reg0
+ [   22a] range 400570, 400578
+          0x0000000000400570 <calc>..
+          0x0000000000400577 <calc+0x7>
+           [ 0] reg5
+          range 400578, 40059b
+          0x0000000000400578 <calc+0x8>..
+          0x000000000040059a <calc+0x2a>
+           [ 0] GNU_entry_value:
+                [ 0] reg5
+           [ 3] stack_value
+ [   263] range 400588, 400593
+          0x0000000000400588 <calc+0x18>..
+          0x0000000000400592 <calc+0x22>
+           [ 0] reg0
+ [   286] range 400588, 40058a
+          0x0000000000400588 <calc+0x18>..
+          0x0000000000400589 <calc+0x19>
+           [ 0] reg1
+          range 40058a, 40058f
+          0x000000000040058a <calc+0x1a>..
+          0x000000000040058e <calc+0x1e>
+           [ 0] reg5
+          range 40058f, 400593
+          0x000000000040058f <calc+0x1f>..
+          0x0000000000400592 <calc+0x22>
+           [ 0] GNU_entry_value:
+                [ 0] reg5
+           [ 3] deref_size 1
+           [ 5] const1u 56
+           [ 7] shl
+           [ 8] const1u 56
+           [10] shra
+           [11] stack_value
+ [   2da] range 400588, 40058a
+          0x0000000000400588 <calc+0x18>..
+          0x0000000000400589 <calc+0x19>
+           [ 0] reg1
+          range 40058a, 400593
+          0x000000000040058a <calc+0x1a>..
+          0x0000000000400592 <calc+0x22>
+           [ 0] reg5
+EOF
+
+# Split DWARF5 variant. Note that the .debug_loclists moved to the .dwo file
+# and now uses an index and addrx indirections.
+testfiles testfile-splitdwarf-5 testfile-hello5.dwo testfile-world5.dwo
+testrun_compare ${abs_top_builddir}/src/readelf --debug-dump=loc --dwarf-skeleton=testfile-splitdwarf-5 testfile-hello5.dwo testfile-world5.dwo <<\EOF
+
+testfile-hello5.dwo:
+
+
+DWARF section [ 3] '.debug_loclists.dwo' at offset 0x236:
+Table at Offset 0x0:
+
+ Length:              125
+ DWARF version:         5
+ Address size:          8
+ Segment size:          0
+ Offset entries:        9
+ CU [    14] base: 0x0000000000401160 <foo>
+
+  Offsets starting at 0xc:
+   [     0] 0x24
+   [     1] 0x32
+   [     2] 0x39
+   [     3] 0x3f
+   [     4] 0x4a
+   [     5] 0x55
+   [     6] 0x5b
+   [     7] 0x61
+   [     8] 0x6f
+
+  Offset: 30, Index: 24
+    startx_length f, a
+      0x0000000000401160 <foo>..
+      0x0000000000401169 <foo+0x9>..
+        [ 0] reg5
+    startx_length 0, 2a
+      0x000000000040116a <foo+0xa>..
+      0x0000000000401193 <foo+0x33>..
+        [ 0] entry_value:
+             [ 0] reg5
+        [ 3] stack_value
+    end_of_list
+
+  Offset: 3e, Index: 32
+    startx_length 11, 12
+      0x000000000040117b <foo+0x1b>..
+      0x000000000040118c <foo+0x2c>..
+        [ 0] addrx [18] 0x404038 <m>
+    end_of_list
+
+  Offset: 45, Index: 39
+    startx_length 11, 6
+      0x000000000040117b <foo+0x1b>..
+      0x0000000000401180 <foo+0x20>..
+        [ 0] reg5
+    end_of_list
+
+  Offset: 4b, Index: 3f
+    startx_length 11, c
+      0x000000000040117b <foo+0x1b>..
+      0x0000000000401186 <foo+0x26>..
+        [ 0] reg5
+    startx_length 1, 4
+      0x0000000000401189 <foo+0x29>..
+      0x000000000040118c <foo+0x2c>..
+        [ 0] reg5
+    end_of_list
+
+  Offset: 56, Index: 4a
+    startx_length 4, 6
+      0x0000000000401181 <foo+0x21>..
+      0x0000000000401186 <foo+0x26>..
+        [ 0] reg5
+    startx_length 1, 4
+      0x0000000000401189 <foo+0x29>..
+      0x000000000040118c <foo+0x2c>..
+        [ 0] reg5
+    end_of_list
+
+  Offset: 61, Index: 55
+    startx_length 4, c
+      0x0000000000401181 <foo+0x21>..
+      0x000000000040118c <foo+0x2c>..
+        [ 0] reg5
+    end_of_list
+
+  Offset: 67, Index: 5b
+    startx_length 2, 6
+      0x000000000040118d <foo+0x2d>..
+      0x0000000000401192 <foo+0x32>..
+        [ 0] reg5
+    end_of_list
+
+  Offset: 6d, Index: 61
+    startx_length 9, f
+      0x00000000004011a0 <baz>..
+      0x00000000004011ae <baz+0xe>..
+        [ 0] reg5
+    startx_length 5, 2
+      0x00000000004011af <baz+0xf>..
+      0x00000000004011b0 <baz+0x10>..
+        [ 0] entry_value:
+             [ 0] reg5
+        [ 3] stack_value
+    end_of_list
+
+  Offset: 7b, Index: 6f
+    startx_length 9, 10
+      0x00000000004011a0 <baz>..
+      0x00000000004011af <baz+0xf>..
+        [ 0] reg5
+    end_of_list
+
+
+testfile-world5.dwo:
+
+
+DWARF section [ 3] '.debug_loclists.dwo' at offset 0x217:
+Table at Offset 0x0:
+
+ Length:              128
+ DWARF version:         5
+ Address size:          8
+ Segment size:          0
+ Offset entries:        7
+ CU [    14] base: 000000000000000000
+
+  Offsets starting at 0xc:
+   [     0] 0x1c
+   [     1] 0x2a
+   [     2] 0x38
+   [     3] 0x3e
+   [     4] 0x4c
+   [     5] 0x52
+   [     6] 0x6d
+
+  Offset: 28, Index: 1c
+    startx_length 2, 14
+      0x0000000000401060 <main>..
+      0x0000000000401073 <main+0x13>..
+        [ 0] reg5
+    startx_length 4, c
+      0x0000000000401074 <main+0x14>..
+      0x000000000040107f <main+0x1f>..
+        [ 0] entry_value:
+             [ 0] reg5
+        [ 3] stack_value
+    end_of_list
+
+  Offset: 36, Index: 2a
+    startx_length 2, 18
+      0x0000000000401060 <main>..
+      0x0000000000401077 <main+0x17>..
+        [ 0] reg4
+    startx_length 7, 6
+      0x0000000000401078 <main+0x18>..
+      0x000000000040107d <main+0x1d>..
+        [ 0] entry_value:
+             [ 0] reg4
+        [ 3] stack_value
+    end_of_list
+
+  Offset: 44, Index: 38
+    startx_length 3, 7
+      0x0000000000401071 <main+0x11>..
+      0x0000000000401077 <main+0x17>..
+        [ 0] reg0
+    end_of_list
+
+  Offset: 4a, Index: 3e
+    startx_length d, 8
+      0x00000000004011c0 <calc>..
+      0x00000000004011c7 <calc+0x7>..
+        [ 0] reg5
+    startx_length e, 23
+      0x00000000004011c8 <calc+0x8>..
+      0x00000000004011ea <calc+0x2a>..
+        [ 0] entry_value:
+             [ 0] reg5
+        [ 3] stack_value
+    end_of_list
+
+  Offset: 58, Index: 4c
+    startx_length f, b
+      0x00000000004011d8 <calc+0x18>..
+      0x00000000004011e2 <calc+0x22>..
+        [ 0] reg0
+    end_of_list
+
+  Offset: 5e, Index: 52
+    startx_length f, 2
+      0x00000000004011d8 <calc+0x18>..
+      0x00000000004011d9 <calc+0x19>..
+        [ 0] reg1
+    startx_length 10, 5
+      0x00000000004011da <calc+0x1a>..
+      0x00000000004011de <calc+0x1e>..
+        [ 0] reg5
+    startx_length 0, 4
+      0x00000000004011df <calc+0x1f>..
+      0x00000000004011e2 <calc+0x22>..
+        [ 0] entry_value:
+             [ 0] reg5
+        [ 3] deref_size 1
+        [ 5] const1u 56
+        [ 7] shl
+        [ 8] const1u 56
+        [10] shra
+        [11] stack_value
+    end_of_list
+
+  Offset: 79, Index: 6d
+    startx_length f, 2
+      0x00000000004011d8 <calc+0x18>..
+      0x00000000004011d9 <calc+0x19>..
+        [ 0] reg1
+    startx_length 10, 9
+      0x00000000004011da <calc+0x1a>..
+      0x00000000004011e2 <calc+0x22>..
+        [ 0] reg5
+    end_of_list
+
+EOF
+
 exit 0