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2004-10-22 Andrew Cagney <cagney@gnu.org>
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* solib-svr4.c (enable_break): Convert a symbol descriptor into
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the corresponding function entry point.
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(solib_break_names): Delete "._dl_debug_state", no longer needed.
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*** ./gdb/solib-svr4.c.dist Fri Oct 22 11:50:31 2004
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--- ./gdb/solib-svr4.c Fri Oct 22 11:53:19 2004
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***************
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*** 86,102 ****
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"_dl_debug_state",
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"rtld_db_dlactivity",
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"_rtld_debug_state",
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-
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- /* On the 64-bit PowerPC, the linker symbol with the same name as
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- the C function points to a function descriptor, not to the entry
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- point. The linker symbol whose name is the C function name
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- prefixed with a '.' points to the function's entry point. So
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- when we look through this table, we ignore symbols that point
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- into the data section (thus skipping the descriptor's symbol),
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- and eventually try this one, giving us the real entry point
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- address. */
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- "._dl_debug_state",
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-
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NULL
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};
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--- 86,91 ----
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***************
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*** 1284,1301 ****
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/* Now try to set a breakpoint in the dynamic linker. */
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for (bkpt_namep = solib_break_names; *bkpt_namep != NULL; bkpt_namep++)
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{
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! /* On ABI's that use function descriptors, there are usually
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! two linker symbols associated with each C function: one
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! pointing at the actual entry point of the machine code,
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! and one pointing at the function's descriptor. The
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! latter symbol has the same name as the C function.
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!
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! What we're looking for here is the machine code entry
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! point, so we are only interested in symbols in code
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! sections. */
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! sym_addr = bfd_lookup_symbol (tmp_bfd, *bkpt_namep, SEC_CODE);
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if (sym_addr != 0)
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! break;
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}
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/* We're done with both the temporary bfd and target. Remember,
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--- 1273,1289 ----
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/* Now try to set a breakpoint in the dynamic linker. */
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for (bkpt_namep = solib_break_names; *bkpt_namep != NULL; bkpt_namep++)
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{
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! sym_addr = bfd_lookup_symbol (tmp_bfd, *bkpt_namep, 0);
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if (sym_addr != 0)
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! {
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! /* The symbol might be a descriptor, convert to into the
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! corresponding code address. */
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! sym_addr = gdbarch_convert_from_func_ptr_addr (current_gdbarch,
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! sym_addr,
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! tmp_bfd_target);
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! if (sym_addr != 0)
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! break;
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! }
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}
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/* We're done with both the temporary bfd and target. Remember,
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