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| author | John Baldwin <jhb@FreeBSD.org> | 2020-07-20 09:09:58 -0700 |
|---|---|---|
| committer | John Baldwin <jhb@FreeBSD.org> | 2020-07-20 09:10:18 -0700 |
| commit | ed810cc7d3252bd8bfdb4303ee6b44293fe6214e (patch) | |
| tree | 93cc390389149769497f84234c5ef0be3b4f092f /gdb/fbsd-tdep.c | |
| parent | ae5369e773c341ab55a130fffb4678bb3595d692 (diff) | |
| download | gdb-ed810cc7d3252bd8bfdb4303ee6b44293fe6214e.zip gdb-ed810cc7d3252bd8bfdb4303ee6b44293fe6214e.tar.gz gdb-ed810cc7d3252bd8bfdb4303ee6b44293fe6214e.tar.bz2 | |
Implement the skip_solib_resolver gdbarch hook for FreeBSD architectures.
The ELF runtime linker on all FreeBSD architectures uses the
"_rtld_bind" entry point for unresolved PTL entries. FreeBSD/mips has
an additional entry point called "_mips_rtld_bind".
gdb/ChangeLog:
* fbsd-tdep.c (fbsd_skip_solib_resolver): New function.
(fbsd_init_abi): Install gdbarch "skip_solib_resolver" method.
* fbsd-tdep.h (fbsd_skip_solib_resolver): New prototype.
* mips-fbsd-tdep.c (mips_fbsd_skip_solib_resolver): New function.
(mips_fbsd_init_abi): Install gdbarch "skip_solib_resolver"
method.
Diffstat (limited to 'gdb/fbsd-tdep.c')
| -rw-r--r-- | gdb/fbsd-tdep.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gdb/fbsd-tdep.c b/gdb/fbsd-tdep.c index 557c5d3..ca397fa 100644 --- a/gdb/fbsd-tdep.c +++ b/gdb/fbsd-tdep.c @@ -21,6 +21,7 @@ #include "auxv.h" #include "gdbcore.h" #include "inferior.h" +#include "objfiles.h" #include "regcache.h" #include "regset.h" #include "gdbthread.h" @@ -2071,6 +2072,18 @@ fbsd_get_thread_local_address (struct gdbarch *gdbarch, CORE_ADDR dtv_addr, return addr + offset; } +/* See fbsd-tdep.h. */ + +CORE_ADDR +fbsd_skip_solib_resolver (struct gdbarch *gdbarch, CORE_ADDR pc) +{ + struct bound_minimal_symbol msym = lookup_bound_minimal_symbol ("_rtld_bind"); + if (msym.minsym != nullptr && BMSYMBOL_VALUE_ADDRESS (msym) == pc) + return frame_unwind_caller_pc (get_current_frame ()); + + return 0; +} + /* To be called from GDB_OSABI_FREEBSD handlers. */ void @@ -2085,6 +2098,7 @@ fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) set_gdbarch_get_siginfo_type (gdbarch, fbsd_get_siginfo_type); set_gdbarch_gdb_signal_from_target (gdbarch, fbsd_gdb_signal_from_target); set_gdbarch_gdb_signal_to_target (gdbarch, fbsd_gdb_signal_to_target); + set_gdbarch_skip_solib_resolver (gdbarch, fbsd_skip_solib_resolver); /* `catch syscall' */ set_xml_syscall_file_name (gdbarch, "syscalls/freebsd.xml"); |