https://sourceware.org/bugzilla/show_bug.cgi?id=20946
Bug ID: 20946
Summary: lookup_mach_via_bfd_name aborts
Product: binutils
Version: 2.28 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: qiyao at gcc dot gnu.org
Target Milestone: ---
I configured gdb with all targets enabled "--enable-targets=all
--enable-64-bit-bfd --disable-binutils --disable-gprof --disable-gold
--disable-gas --disable-ld".
If I change arch to "fr300", and do disassembly, lookup_mach_via_bfd_name
aborts.
(gdb) set architecture fr300
The target architecture is assumed to be fr300
(gdb) disassemble 0x0,+4
Dump of assembler code from 0x0 to 0x4:
0x00000000:
Program received signal SIGABRT, Aborted.
0x00007ffff63c3cc9 in __GI_raise (sig=sig@entry=6) at
../nptl/sysdeps/unix/sysv/linux/raise.c:56
56 ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory.
(gdb) bt 20
#0 0x00007ffff63c3cc9 in __GI_raise (sig=sig@entry=6) at
../nptl/sysdeps/unix/sysv/linux/raise.c:56
#1 0x00007ffff63c70d8 in __GI_abort () at abort.c:89
#2 0x000000000088bbad in lookup_mach_via_bfd_name (table=0x1472ee8
<frv_cgen_mach_table+168>, name=0x17afc51 "fr300")
at /home/yao/SourceCode/gnu/gdb/git/opcodes/frv-desc.c:6176
#3 0x000000000088c2df in frv_cgen_cpu_open (arg_type=CGEN_CPU_OPEN_BFDMACH) at
/home/yao/SourceCode/gnu/gdb/git/opcodes/frv-desc.c:6387
#4 0x0000000000811c72 in print_insn_frv (pc=0, info=0x7fffffffd940) at
/home/yao/SourceCode/gnu/gdb/git/opcodes/frv-dis.c:784
#5 0x0000000000679e87 in gdb_pretty_print_insn (gdbarch=0x26cb970,
uiout=0x21a2700, di=0x7fffffffd940, insn=0x7fffffffd850, flags=0,
stb=0x26ccef0)
at /home/yao/SourceCode/gnu/gdb/git/gdb/disasm.c:281
#6 0x000000000067a0ae in dump_insns (gdbarch=0x26cb970, uiout=0x21a2700,
di=0x7fffffffd940, low=0, high=4, how_many=-1, flags=0, stb=0x26ccef0,
end_pc=0x0)
at /home/yao/SourceCode/gnu/gdb/git/gdb/disasm.c:347
#7 0x000000000067b3d3 in do_assembly_only (gdbarch=0x26cb970, uiout=0x21a2700,
di=0x7fffffffd940, low=0, high=4, how_many=-1, flags=0, stb=0x26ccef0)
at /home/yao/SourceCode/gnu/gdb/git/gdb/disasm.c:789
#8 0x000000000067b67f in gdb_disassembly (gdbarch=0x26cb970, uiout=0x21a2700,
file_string=0x0, flags=0, how_many=-1, low=0, high=4)
at /home/yao/SourceCode/gnu/gdb/git/gdb/disasm.c:855
#9 0x00000000005965bb in print_disassembly (gdbarch=0x26cb970, name=<optimised
out>, low=0, high=4, flags=0)
at /home/yao/SourceCode/gnu/gdb/git/gdb/cli/cli-cmds.c:1151
#10 0x0000000000597516 in print_disassembly (flags=0, high=4, low=0, name=0x0,
gdbarch=0x26cb970) at /home/yao/SourceCode/gnu/gdb/git/gdb/cli/cli-cmds.c:1140
#11 disassemble_command (arg=<optimised out>, from_tty=<optimised out>) at
/home/yao/SourceCode/gnu/gdb/git/gdb/cli/cli-cmds.c:1303
#12 0x000000000059ac33 in cmd_func (cmd=0x20cb600, args=0x26becfc "0x0,+4",
from_tty=1) at /home/yao/SourceCode/gnu/gdb/git/gdb/cli/cli-decode.c:1913
#13 0x000000000078a3f6 in execute_command (p=<optimised out>, p@entry=0x26becf0
"disassemble 0x0,+4", from_tty=1)
at /home/yao/SourceCode/gnu/gdb/git/gdb/top.c:674
#14 0x00000000006b538c in command_handler (command=0x26becf0 "disassemble
0x0,+4") at /home/yao/SourceCode/gnu/gdb/git/gdb/event-top.c:550
#15 0x00000000006b5688 in command_line_handler (rl=<optimised out>) at
/home/yao/SourceCode/gnu/gdb/git/gdb/event-top.c:740
... because it can't find "fr300" in frv_cgen_mach_table,
(gdb) p frv_cgen_mach_table
$1 = {{name = 0x1471cd5 "frv", bfd_name = 0x1471cd5 "frv", num = 1,
insn_chunk_bitsize = 0}, {name = 0x1471cd9 "fr550", bfd_name = 0x1471cd9
"fr550",
num = 2, insn_chunk_bitsize = 0}, {name = 0x1471cdf "fr500", bfd_name =
0x1471cdf "fr500", num = 3, insn_chunk_bitsize = 0}, {name = 0x1471cf1
"tomcat",
bfd_name = 0x1471cf1 "tomcat", num = 6, insn_chunk_bitsize = 0}, {name =
0x1471ceb "fr400", bfd_name = 0x1471ceb "fr400", num = 5,
insn_chunk_bitsize = 0}, {name = 0x1471ce5 "fr450", bfd_name = 0x1471ce5
"fr450", num = 4, insn_chunk_bitsize = 0}, {name = 0x1471cf8 "simple",
bfd_name = 0x1471cf8 "simple", num = 7, insn_chunk_bitsize = 0}, {name =
0x0, bfd_name = 0x0, num = 0, insn_chunk_bitsize = 0}}
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