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[Bug gdb/22979] New: gdb configured with target=x86_64-elf ends up with i386 machine description
- From: "doug16k at gmail dot com" <sourceware-bugzilla at sourceware dot org>
- To: gdb-prs at sourceware dot org
- Date: Mon, 19 Mar 2018 01:27:39 +0000
- Subject: [Bug gdb/22979] New: gdb configured with target=x86_64-elf ends up with i386 machine description
- Auto-submitted: auto-generated
https://sourceware.org/bugzilla/show_bug.cgi?id=22979
Bug ID: 22979
Summary: gdb configured with target=x86_64-elf ends up with
i386 machine description
Product: gdb
Version: 8.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: doug16k at gmail dot com
Target Milestone: ---
Repro:
1) Build and install gdb with --target=x86_64-elf
2) Run x86_64-elf-gdb
3) Run command: maintenance print raw-registers
This is the output:
(gdb) maintenance print raw-registers
Name Nr Rel Offset Size Type Raw value
eax 0 0 0 4 int32_t <invalid>
ecx 1 1 4 4 int32_t <invalid>
edx 2 2 8 4 int32_t <invalid>
ebx 3 3 12 4 int32_t <invalid>
esp 4 4 16 4 *1 <invalid>
ebp 5 5 20 4 *1 <invalid>
esi 6 6 24 4 int32_t <invalid>
edi 7 7 28 4 int32_t <invalid>
eip 8 8 32 4 *1 <invalid>
eflags 9 9 36 4 i386_eflags <invalid>
cs 10 10 40 4 int32_t <invalid>
ss 11 11 44 4 int32_t <invalid>
ds 12 12 48 4 int32_t <invalid>
es 13 13 52 4 int32_t <invalid>
fs 14 14 56 4 int32_t <invalid>
gs 15 15 60 4 int32_t <invalid>
st0 16 16 64 10 _i387_ext <invalid>
st1 17 17 74 10 _i387_ext <invalid>
st2 18 18 84 10 _i387_ext <invalid>
st3 19 19 94 10 _i387_ext <invalid>
st4 20 20 104 10 _i387_ext <invalid>
st5 21 21 114 10 _i387_ext <invalid>
st6 22 22 124 10 _i387_ext <invalid>
st7 23 23 134 10 _i387_ext <invalid>
fctrl 24 24 144 4 long <invalid>
fstat 25 25 148 4 long <invalid>
ftag 26 26 152 4 long <invalid>
fiseg 27 27 156 4 long <invalid>
fioff 28 28 160 4 long <invalid>
foseg 29 29 164 4 long <invalid>
fooff 30 30 168 4 long <invalid>
fop 31 31 172 4 long <invalid>
xmm0 32 32 176 16 vec128 <invalid>
xmm1 33 33 192 16 vec128 <invalid>
xmm2 34 34 208 16 vec128 <invalid>
xmm3 35 35 224 16 vec128 <invalid>
xmm4 36 36 240 16 vec128 <invalid>
xmm5 37 37 256 16 vec128 <invalid>
xmm6 38 38 272 16 vec128 <invalid>
xmm7 39 39 288 16 vec128 <invalid>
mxcsr 40 40 304 4 i386_mxcsr <invalid>
'' 41 41 308 0 int0_t <invalid>
'' 42 42 308 0 int0_t <invalid>
'' 43 43 308 0 int0_t <invalid>
'' 44 44 308 0 int0_t <invalid>
'' 45 45 308 0 int0_t <invalid>
'' 46 46 308 0 int0_t <invalid>
'' 47 47 308 0 int0_t <invalid>
'' 48 48 308 0 int0_t <invalid>
'' 49 49 308 0 int0_t <invalid>
'' 50 50 308 0 int0_t <invalid>
'' 51 51 308 0 int0_t <invalid>
'' 52 52 308 0 int0_t <invalid>
'' 53 53 308 0 int0_t <invalid>
'' 54 54 308 0 int0_t <invalid>
'' 55 55 308 0 int0_t <invalid>
'' 56 56 308 0 int0_t <invalid>
'' 57 57 308 0 int0_t <invalid>
'' 58 58 308 0 int0_t <invalid>
'' 59 59 308 0 int0_t <invalid>
'' 60 60 308 0 int0_t <invalid>
'' 61 61 308 0 int0_t <invalid>
'' 62 62 308 0 int0_t <invalid>
'' 63 63 308 0 int0_t <invalid>
'' 64 64 308 0 int0_t <invalid>
'' 65 65 308 0 int0_t <invalid>
'' 66 66 308 0 int0_t <invalid>
'' 67 67 308 0 int0_t <invalid>
'' 68 68 308 0 int0_t <invalid>
'' 69 69 308 0 int0_t <invalid>
'' 70 70 308 0 int0_t <invalid>
'' 71 71 308 0 int0_t <invalid>
al 72 0 308 1 int8_t <cooked>
cl 73 1 309 1 int8_t <cooked>
dl 74 2 310 1 int8_t <cooked>
bl 75 3 311 1 int8_t <cooked>
ah 76 4 312 1 int8_t <cooked>
ch 77 5 313 1 int8_t <cooked>
dh 78 6 314 1 int8_t <cooked>
bh 79 7 315 1 int8_t <cooked>
ax 80 8 316 2 int16_t <cooked>
cx 81 9 318 2 int16_t <cooked>
dx 82 10 320 2 int16_t <cooked>
bx 83 11 322 2 int16_t <cooked>
'' 84 12 324 2 int16_t <cooked>
bp 85 13 326 2 int16_t <cooked>
si 86 14 328 2 int16_t <cooked>
di 87 15 330 2 int16_t <cooked>
mm0 88 16 332 8 _vec64i <cooked>
mm1 89 17 340 8 _vec64i <cooked>
mm2 90 18 348 8 _vec64i <cooked>
mm3 91 19 356 8 _vec64i <cooked>
mm4 92 20 364 8 _vec64i <cooked>
mm5 93 21 372 8 _vec64i <cooked>
mm6 94 22 380 8 _vec64i <cooked>
mm7 95 23 388 8 _vec64i <cooked>
*1: Register type's name NULL.
(gdb)
It will not accept a machine description for x86_64 from a gdb stub (which is
accepted by and works with x86_64-linux-gnu). Shows this message:
(gdb) set debug arch 1
(gdb) target remote localhost:7788
Remote debugging using localhost:7788
gdbarch_find_by_info: info.bfd_arch_info i386:x86-64
gdbarch_find_by_info: info.byte_order 1 (little)
gdbarch_find_by_info: info.osabi 0 (none)
gdbarch_find_by_info: info.abfd 0x5622dcd7a950
gdbarch_find_by_info: info.tdep_info 0x0
gdbarch_find_by_info: Target rejected architecture
gdbarch_update_p: Architecture not found
warning: Architecture rejected target-supplied description
Remote 'g' packet reply is too long (expected 308 bytes, got 2408 bytes):
0000...[snip]
308 is nonsense for x86_64 context.
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