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| author | Jan Kratochvil <jan.kratochvil@redhat.com> | 2011-03-28 20:21:04 +0000 |
|---|---|---|
| committer | Jan Kratochvil <jan.kratochvil@redhat.com> | 2011-03-28 20:21:04 +0000 |
| commit | 0875794a962c041bde76423e980875a467bb0bbe (patch) | |
| tree | bab7168364c38c5ad57ad405357258cbb8221348 /gdb/minsyms.c | |
| parent | d0fb5eaead43c6b5e73b113227b1be71c07fd213 (diff) | |
| download | gdb-0875794a962c041bde76423e980875a467bb0bbe.zip gdb-0875794a962c041bde76423e980875a467bb0bbe.tar.gz gdb-0875794a962c041bde76423e980875a467bb0bbe.tar.bz2 | |
gdb/
GDB internal type support for STT_GNU_IFUNC.
* elfread.c (record_minimal_symbol): Support mst_text_gnu_ifunc.
(elf_symtab_read): Set mst_text_gnu_ifunc for
BSF_GNU_INDIRECT_FUNCTION.
* eval.c (evaluate_subexp_standard): Support TYPE_GNU_IFUNC.
* gdbtypes.c (init_type): Support TYPE_FLAG_GNU_IFUNC,
builtin_func_func, nodebug_text_gnu_ifunc_symbol and
nodebug_got_plt_symbol.
* gdbtypes.h (enum type_flag_value): New entry TYPE_FLAG_GNU_IFUNC.
(TYPE_GNU_IFUNC): New.
(struct main_type): New field flag_gnu_ifunc.
(struct builtin_type): New field builtin_func_func.
(struct objfile_type): New fields nodebug_text_gnu_ifunc_symbol and
nodebug_got_plt_symbol.
* minsyms.c (lookup_minimal_symbol_text): Support mst_text_gnu_ifunc.
(in_gnu_ifunc_stub): New.
(prim_record_minimal_symbol, find_solib_trampoline_target): Support
mst_text_gnu_ifunc.
* parse.c (write_exp_msymbol): New variable ifunc_msym. Detect and
support mst_text_gnu_ifunc. Support mst_slot_got_plt.
* solib-svr4.c (svr4_in_dynsym_resolve_code): Return true also for
in_gnu_ifunc_stub.
* symmisc.c (dump_msymbols): Support mst_text_gnu_ifunc.
* symtab.c (search_symbols): Likewise.
* symtab.h (enum minimal_symbol_type): New fields mst_text_gnu_ifunc
and mst_slot_got_plt.
(in_gnu_ifunc_stub): New declaration.
Diffstat (limited to 'gdb/minsyms.c')
| -rw-r--r-- | gdb/minsyms.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/gdb/minsyms.c b/gdb/minsyms.c index 4551b07..534a8b2 100644 --- a/gdb/minsyms.c +++ b/gdb/minsyms.c @@ -334,8 +334,9 @@ lookup_minimal_symbol_text (const char *name, struct objfile *objf) msymbol = msymbol->hash_next) { if (strcmp (SYMBOL_LINKAGE_NAME (msymbol), name) == 0 && - (MSYMBOL_TYPE (msymbol) == mst_text || - MSYMBOL_TYPE (msymbol) == mst_file_text)) + (MSYMBOL_TYPE (msymbol) == mst_text + || MSYMBOL_TYPE (msymbol) == mst_text_gnu_ifunc + || MSYMBOL_TYPE (msymbol) == mst_file_text)) { switch (MSYMBOL_TYPE (msymbol)) { @@ -697,6 +698,16 @@ lookup_minimal_symbol_by_pc (CORE_ADDR pc) return lookup_minimal_symbol_by_pc_section (pc, NULL); } +/* Return non-zero iff PC is in an STT_GNU_IFUNC function resolver. */ + +int +in_gnu_ifunc_stub (CORE_ADDR pc) +{ + struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (pc); + + return msymbol && MSYMBOL_TYPE (msymbol) == mst_text_gnu_ifunc; +} + /* Find the minimal symbol named NAME, and return both the minsym struct and its objfile. This only checks the linkage name. Sets *OBJFILE_P and returns the minimal symbol, if it is found. If it @@ -766,6 +777,7 @@ prim_record_minimal_symbol (const char *name, CORE_ADDR address, switch (ms_type) { case mst_text: + case mst_text_gnu_ifunc: case mst_file_text: case mst_solib_trampoline: section = SECT_OFF_TEXT (objfile); @@ -1231,7 +1243,8 @@ find_solib_trampoline_target (struct frame_info *frame, CORE_ADDR pc) { ALL_MSYMBOLS (objfile, msymbol) { - if (MSYMBOL_TYPE (msymbol) == mst_text + if ((MSYMBOL_TYPE (msymbol) == mst_text + || MSYMBOL_TYPE (msymbol) == mst_text_gnu_ifunc) && strcmp (SYMBOL_LINKAGE_NAME (msymbol), SYMBOL_LINKAGE_NAME (tsymbol)) == 0) return SYMBOL_VALUE_ADDRESS (msymbol); |