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| -rw-r--r-- | gdb/ChangeLog | 7 | ||||
| -rw-r--r-- | gdb/alpha-tdep.c | 10 |
2 files changed, 17 insertions, 0 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 0972e99..3e3b759 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,10 @@ +2004-04-02 Joel Brobecker <brobecker@gnat.com> + + Committed by Andrew Cagney <cagney@redhat.com>. + * alpha-tdep.c (alpha_heuristic_frame_unwind_cache): Do not take + into account an instruction saving a register if we have already + seen an earlier instruction saving that same register. + 2004-04-02 Andrew Cagney <cagney@redhat.com> * gdbarch.sh (DEPRECATED_INIT_FRAME_PC_FIRST): Delete. diff --git a/gdb/alpha-tdep.c b/gdb/alpha-tdep.c index 8777afc..0f4eaa7 100644 --- a/gdb/alpha-tdep.c +++ b/gdb/alpha-tdep.c @@ -1029,6 +1029,16 @@ alpha_heuristic_frame_unwind_cache (struct frame_info *next_frame, { reg = (word & 0x03e00000) >> 21; + /* Ignore this instruction if we have already encountered + an instruction saving the same register earlier in the + function code. The current instruction does not tell + us where the original value upon function entry is saved. + All it says is that the function we are scanning reused + that register for some computation of its own, and is now + saving its result. */ + if (info->saved_regs[reg]) + continue; + if (reg == 31) continue; |