mirror of
https://github.com/openharmony/third_party_elfutils.git
synced 2026-07-01 06:41:51 -04:00
Mark Wielaard
383eef45f6
For a skeleton DIE dwarf_get_units should provide the split DIE as subdie. This implements that by trying to find the (named) .dwo file and finding the matching CU in it. The .dwo file is search relative to the current DWARF or using the comp_dir of the skeleton DIE. Also fixes a small issue with str_offsets_base_off which is tested in the new testcase (by getting the name of the split CU DIE). Signed-off-by: Mark Wielaard <mark@klomp.org>
90 lines
1.9 KiB
Plaintext
90 lines
1.9 KiB
Plaintext
# Nonsensical program used to generate an example DWARF4 and DWARF5 file.
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# The generated code is the same, but the DWARF representation is different.
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# = hello.h =
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extern int m;
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extern int baz (int x);
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static inline int
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frob (int a, int b)
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{
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int c = a;
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if (a > b)
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c -= b;
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return baz (c);
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}
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# = hello.c =
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#include <stddef.h>
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#include "hello.h"
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extern int main (int, char **);
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int m = 2;
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wchar_t foo (wchar_t);
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int baz (int x)
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{
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int r = x;
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if (x > m)
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r -= m;
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r = foo (r);
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return r;
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}
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wchar_t
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foo (wchar_t f)
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{
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if (f < 0)
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return main (f, NULL);
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return f > 0 ? frob (f - 1, m) : 0;
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}
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# = world.c =
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#include "hello.h"
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#include <stdlib.h>
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int
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calc (const char *word)
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{
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if (word == 0 || word[0] == '\0')
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return 0;
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return frob (word[0], m + 42);
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}
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int
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main (int argc, const char **argv)
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{
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const char *n;
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if (argc > 1)
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n = argv[0];
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else
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n = "world";
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exit (calc (n));
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}
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$ gcc -gdwarf-4 -gno-as-loc-support -gno-variable-location-views -O2 -c world.c
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$ gcc -gdwarf-4 -gno-as-loc-support -gno-variable-location-views -O2 -c hello.c
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$ gcc -o testfile-dwarf-4 hello.o world.o
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$ gcc -gdwarf-5 -gno-as-loc-support -gno-variable-location-views -O2 -c world.c
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$ gcc -gdwarf-5 -gno-as-loc-support -gno-variable-location-views -O2 -c hello.c
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$ gcc -o testfile-dwarf-5 hello.o world.o
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$ gcc -gdwarf-4 -gsplit-dwarf -gno-as-loc-support -gno-variable-location-views -O2 -o testfile-world4.o -c world.c
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$ gcc -gdwarf-4 -gsplit-dwarf -gno-as-loc-support -gno-variable-location-views -O2 -o testfile-hello4.o -c hello.c
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$ gcc -o testfile-splitdwarf-4 testfile-hello4.o testfile-world4.o
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$ gcc -gdwarf-5 -gsplit-dwarf -gno-as-loc-support -gno-variable-location-views -O2 -o testfile-world5.o -c world.c
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$ gcc -gdwarf-5 -gsplit-dwarf -gno-as-loc-support -gno-variable-location-views -O2 -o testfile-hello5.o -c hello.c
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$ gcc -o testfile-splitdwarf-5 testfile-hello5.o testfile-world5.o
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