Gdb misreading addresses on aarch64eb

[Eivind Nicolay Evensen <eivinde%terraplane.org@localhost>]

Hello.

In case somebody wants to know, I just noticed this on:

nbarm64be!ene[~]> uname -srmp
NetBSD 11.99.3 evbarm aarch64eb

nbarm64be!ene[~]> echo "int main(){return(0);}" >a.c
nbarm64be!ene[~]> cc -g a.c

nbarm64be!ene[~]> gdb ./a.out
[... infotext ...]
Reading symbols from ./a.out...
(gdb) b main
Breakpoint 1 at 0x2001008e4: file a.c, line 1.
(gdb) r
Starting program: /home/ene/a.out 

Breakpoint 1, main () at a.c:1
1       int main(){return(0);}
(gdb) info reg sp
sp             0xffffffcc2d90      0xffffffcc2d90
(gdb) x/4w 0xffffffcc2d90
0x902dccffffff0000:     Cannot access memory at address 0x902dccffffff0000


The address is byteswapped here. As a workaround, the emitted address
will be interpreted as the right one:

(gdb) x/4w 0x902dccffffff0000
0xffffffcc2d90: 0       0       65535   -113112848
(gdb) quit
A debugging session is active.

 Inferior 1 [process 4944] will be killed.

Quit anyway? (y or n) y
nbarm64be!ene[~]> 



Regards
-- 
Eivind Nicolay Evensen