From: Mark Wielaard Date: Wed, 29 Nov 2017 15:37:50 +0000 (+0100) Subject: readelf: Print CU, base address and unresolved .debug_loc entries. X-Git-Tag: elfutils-0.171~99 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=fbb6c932e3ff74d4fb8bc54b72d9c9bdc4513f69;p=thirdparty%2Felfutils.git readelf: Print CU, base address and unresolved .debug_loc entries. Also adjust the formatting for the resolved addresses to print them on separate lines so they nicely line up even when the addresses are resolved to symbol+offset names. And print the operands starting on a new line. Signed-off-by: Mark Wielaard --- diff --git a/src/ChangeLog b/src/ChangeLog index 3dd80fb0a..612b36558 100644 --- a/src/ChangeLog +++ b/src/ChangeLog @@ -1,3 +1,8 @@ +2017-11-29 Mark Wielaard + + * readelf.c (print_debug_loc_section): Print CU base and unresolved + addresses. Adjust formatting. + 2017-11-29 Mark Wielaard * readelf.c (print_debug_ranges_section): Print CU base and unresolved diff --git a/src/readelf.c b/src/readelf.c index 8e134627a..bb48af9bf 100644 --- a/src/readelf.c +++ b/src/readelf.c @@ -7130,19 +7130,36 @@ print_debug_loc_section (Dwfl_Module *dwflmod, uint_fast8_t offset_size = 4; bool first = true; - struct Dwarf_CU *cu = NULL; Dwarf_Addr base = 0; unsigned char *readp = data->d_buf; unsigned char *const endp = (unsigned char *) data->d_buf + data->d_size; + Dwarf_CU *last_cu = NULL; while (readp < endp) { ptrdiff_t offset = readp - (unsigned char *) data->d_buf; + Dwarf_CU *cu; if (first && skip_listptr_hole (&known_loclistptr, &listptr_idx, &address_size, &offset_size, &base, &cu, offset, &readp, endp)) continue; + if (last_cu != cu) + { + char *basestr = format_dwarf_addr (dwflmod, address_size, + base, base); + Dwarf_Die cudie; + if (dwarf_cu_die (cu, &cudie, + NULL, NULL, NULL, NULL, + NULL, NULL) == NULL) + printf (gettext ("\n Unknown CU base: %s\n"), basestr); + else + printf (gettext ("\n CU [%6" PRIx64 "] base: %s\n"), + dwarf_dieoffset (&cudie), basestr); + free (basestr); + } + last_cu = cu; + if (unlikely (data->d_size - offset < (size_t) address_size * 2)) { printf (gettext (" [%6tx] \n"), offset); @@ -7167,14 +7184,14 @@ print_debug_loc_section (Dwfl_Module *dwflmod, if (begin == (Dwarf_Addr) -1l) /* Base address entry. */ { char *b = format_dwarf_addr (dwflmod, address_size, end, end); - printf (gettext (" [%6tx] base address %s\n"), offset, b); + printf (gettext (" [%6tx] base address\n %s\n"), offset, b); free (b); base = end; } else if (begin == 0 && end == 0) /* End of list entry. */ { if (first) - printf (gettext (" [%6tx] empty list\n"), offset); + printf (gettext (" [%6tx] empty list\n"), offset); first = true; } else @@ -7182,18 +7199,23 @@ print_debug_loc_section (Dwfl_Module *dwflmod, /* We have a location expression entry. */ uint_fast16_t len = read_2ubyte_unaligned_inc (dbg, readp); - char *b = format_dwarf_addr (dwflmod, address_size, base + begin, - begin); - char *e = format_dwarf_addr (dwflmod, address_size, base + end, - end); - if (first) /* First entry in a list. */ - printf (gettext (" [%6tx] %s..%s"), offset, b, e); + printf (" [%6tx] ", offset); else - printf (gettext (" %s..%s"), b, e); + printf (" "); - free (b); - free (e); + printf ("range %" PRIx64 ", %" PRIx64 "\n", begin, end); + if (! print_unresolved_addresses) + { + char *b = format_dwarf_addr (dwflmod, address_size, base + begin, + base + begin); + char *e = format_dwarf_addr (dwflmod, address_size, + base + end - 1, base + end); + printf (" %s..\n", b); + printf (" %s\n", e); + free (b); + free (e); + } if (endp - readp <= (ptrdiff_t) len) { @@ -7201,8 +7223,9 @@ print_debug_loc_section (Dwfl_Module *dwflmod, break; } - print_ops (dwflmod, dbg, 1, 18 + (address_size * 4), - 3 /*XXX*/, address_size, offset_size, cu, len, readp); + print_ops (dwflmod, dbg, 11, 11, + cu != NULL ? cu->version : 3, + address_size, offset_size, cu, len, readp); first = false; readp += len; diff --git a/tests/ChangeLog b/tests/ChangeLog index 4666dcc21..cb0c977ff 100644 --- a/tests/ChangeLog +++ b/tests/ChangeLog @@ -1,3 +1,9 @@ +2017-11-29 Mark Wielaard + + * run-readelf-loc.sh: Adjust expected loc list output. + * run-readelf-zdebug-rel.sh: Likewise. + * run-readelf-zdebug.sh: Likewise. + 2017-11-29 Mark Wielaard * run-readelf-loc.sh: Adjust expected range list output. diff --git a/tests/run-readelf-loc.sh b/tests/run-readelf-loc.sh index 4b666cfea..e5152df85 100755 --- a/tests/run-readelf-loc.sh +++ b/tests/run-readelf-loc.sh @@ -63,9 +63,22 @@ testrun_compare ${abs_top_builddir}/src/readelf --debug-dump=loc --debug-dump=ra testfileloc<<\EOF DWARF section [33] '.debug_loc' at offset 0xd2a: - [ 0] 0x0000000000400480
..0x000000000040048d [ 0] reg5 - [ 23] 0x0000000000400485 ..0x000000000040048d [ 0] reg5 - [ 46] 0x00000000004004b2 ..0x00000000004004ba [ 0] breg5 0 + + CU [ b] base: 0x0000000000400480
+ [ 0] range 0, d + 0x0000000000400480
.. + 0x000000000040048c + [ 0] reg5 + [ 23] range 5, d + 0x0000000000400485 .. + 0x000000000040048c + [ 0] reg5 + + CU [ e0] base: 0x00000000004004a0 + [ 46] range 12, 1a + 0x00000000004004b2 .. + 0x00000000004004b9 + [ 0] breg5 0 DWARF section [34] '.debug_ranges' at offset 0xd94: @@ -91,9 +104,22 @@ testrun_compare ${abs_top_builddir}/src/readelf -N --debug-dump=loc --debug-dump testfileloc<<\EOF DWARF section [33] '.debug_loc' at offset 0xd2a: - [ 0] 0x0000000000400480..0x000000000040048d [ 0] reg5 - [ 23] 0x0000000000400485..0x000000000040048d [ 0] reg5 - [ 46] 0x00000000004004b2..0x00000000004004ba [ 0] breg5 0 + + CU [ b] base: 0x0000000000400480 + [ 0] range 0, d + 0x0000000000400480.. + 0x000000000040048c + [ 0] reg5 + [ 23] range 5, d + 0x0000000000400485.. + 0x000000000040048c + [ 0] reg5 + + CU [ e0] base: 0x00000000004004a0 + [ 46] range 12, 1a + 0x00000000004004b2.. + 0x00000000004004b9 + [ 0] breg5 0 DWARF section [34] '.debug_ranges' at offset 0xd94: @@ -119,9 +145,16 @@ testrun_compare ${abs_top_builddir}/src/readelf -U --debug-dump=loc --debug-dump testfileloc<<\EOF DWARF section [33] '.debug_loc' at offset 0xd2a: - [ 0] 000000000000000000..0x000000000000000d [ 0] reg5 - [ 23] 0x0000000000000005..0x000000000000000d [ 0] reg5 - [ 46] 0x0000000000000012..0x000000000000001a [ 0] breg5 0 + + CU [ b] base: 0x0000000000400480 + [ 0] range 0, d + [ 0] reg5 + [ 23] range 5, d + [ 0] reg5 + + CU [ e0] base: 0x00000000004004a0 + [ 46] range 12, 1a + [ 0] breg5 0 DWARF section [34] '.debug_ranges' at offset 0xd94: diff --git a/tests/run-readelf-zdebug-rel.sh b/tests/run-readelf-zdebug-rel.sh index 2b57d0581..ccccd82db 100755 --- a/tests/run-readelf-zdebug-rel.sh +++ b/tests/run-readelf-zdebug-rel.sh @@ -127,12 +127,17 @@ cat info.out | testrun_compare ${abs_top_builddir}/src/readelf -U --debug-dump=i cat > loc.out << \EOF DWARF section [ 7] '.debug_loc' at offset 0x185: - [ 0] 000000000000000000..0x0000000000000003 [ 0] reg5 - 0x0000000000000003..0x0000000000000010 [ 0] breg5 -42 - [ 2] stack_value - 0x0000000000000010..0x0000000000000018 [ 0] GNU_entry_value: - [ 0] reg5 - [ 3] stack_value + + CU [ b] base: 000000000000000000 + [ 0] range 0, 3 + [ 0] reg5 + range 3, 10 + [ 0] breg5 -42 + [ 2] stack_value + range 10, 18 + [ 0] GNU_entry_value: + [ 0] reg5 + [ 3] stack_value EOF cat loc.out | testrun_compare ${abs_top_builddir}/src/readelf -U --debug-dump=loc testfile-debug-rel.o diff --git a/tests/run-readelf-zdebug.sh b/tests/run-readelf-zdebug.sh index 7be9beeee..28128ad90 100755 --- a/tests/run-readelf-zdebug.sh +++ b/tests/run-readelf-zdebug.sh @@ -46,12 +46,17 @@ tempfiles loc.out aranges.out ranges.out macro.out line.out frame.out cat > loc.out << \EOF DWARF section [30] '.debug_loc' at offset 0xa17: - [ 0] 0x00000000004003c0..0x00000000004003c3 [ 0] reg5 - 0x00000000004003c3..0x00000000004003d6 [ 0] breg5 -42 - [ 2] stack_value - 0x00000000004003d6..0x00000000004003d9 [ 0] GNU_entry_value: - [ 0] reg5 - [ 3] stack_value + + CU [ b] base: 000000000000000000 + [ 0] range 4003c0, 4003c3 + [ 0] reg5 + range 4003c3, 4003d6 + [ 0] breg5 -42 + [ 2] stack_value + range 4003d6, 4003d9 + [ 0] GNU_entry_value: + [ 0] reg5 + [ 3] stack_value EOF cat loc.out | testrun_compare ${abs_top_builddir}/src/readelf -U --debug-dump=loc testfile-debug