This is the mail archive of the
gdb-patches@sources.redhat.com
mailing list for the GDB project.
Re: [patch rfc] Add NUM_REGS pseudo regs to MIPS
- From: Andrew Cagney <ac131313 at redhat dot com>
- To: Steve Watt <steve at asicdesigners dot com>
- Cc: gdb-patches at sources dot redhat dot com
- Date: Mon, 21 Jul 2003 11:26:37 -0400
- Subject: Re: [patch rfc] Add NUM_REGS pseudo regs to MIPS
- References: <200307190013.h6J0DS7B098077@oberon.asicdesigners.com>
Sigh. Something in the backtrace is still amiss.
#2 0x080ca201 in gdbarch_register_sim_regno (gdbarch=0x82fdc48, reg_nr=90)
at ../../combined/gdb/gdbarch.c:4078
#3 0x08125173 in gdbsim_fetch_register (regno=90) at ../../combined/gdb/remote-sim.c:299
#4 0x08093e0b in legacy_read_register_gen (regnum=90,
myaddr=0xbffff140 " ñÿ¿HÜ/\bhñÿ¿î\211\f\bHÜ/\bZ")
at ../../combined/gdb/regcache.c:727
As far as I can tell, frame_register_unwind doesn't call
legacy_read_register_gen.
#5 0x08113891 in frame_register_unwind (frame=0x82e0f40, regnum=90,
optimizedp=0xbffff0e8, lvalp=0xbffff0ec, addrp=0xbffff0f0, realnump=0xbffff014,
bufferp=0xbffff140) at ../../combined/gdb/frame.c:534
#6 0x080dbd82 in mips_get_saved_register (
raw_buffer=0xbffff140 " ñÿ¿HÜ/\bhñÿ¿î\211\f\bHÜ/\bZ", optimizedp=0xbffff0e8,
addrp=0xbffff0f0, frame=0x82e0f40, regnum=90, lvalp=0xbffff0ec)
at ../../combined/gdb/mips-tdep.c:5603
I suspect some agressive tail-call optimization by GCC is involved. Can
you update your sources (so that we both have the same code) and then
configure/build gdb using:
CFLAGS="-O -g" .../configure ....
so that -O2 is disabled (or at least should be).
Andrew