Package: radare2
Version: 1.0+dfsg-1
Severity: normal
Control: found -1 0.10.6+dfsg-1
Hello,
I try to assemble the arm thumb instruction
sub sp, #0x10
using:
$ rasm2 -a arm -e -b 16 "sub sp, #0x10;"
1035
This is however inconsistent with the disassembler shows:
$ rasm2 -a arm -e -b 16 -d 1035
asrs r5, r6, 0x20
Double checking with ARMARM it's indeed the assembler which is
wrong.
When using "sub sp, sp, #0x10;" I get a different wrong result:
$ rasm2 -a arm -e -b 16 "sub sp, sp, #0x10;"
6d1e
$ rasm2 -a arm -e -b 16 -d 6d1e
ldr r6, [r3, 0x50]
(Again, ARMARM tells that the disassembler is right.)
The right solution is b084 according to ARMARM and rasm2 -d:
$ rasm2 -a arm -e -b 16 -d b084
sub sp, 0x10
Doing the same with -b 32 (i.e. ARM instead of Thumb) it works fine:
$ rasm2 -a arm -e -b 32 "sub sp, sp, #0x10;"
e24dd010
$ rasm2 -a arm -e -b 32 -d e24dd010
sub sp, sp, 0x10
This happens with both radare2 from stretch (0.10) and sid (1.0).
Best regards
Uwe
-- System Information:
Debian Release: stretch/sid
APT prefers testing
APT policy: (800, 'testing'), (600, 'unstable'), (500, 'testing-debug'),
(500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 3.16.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages radare2 depends on:
ii libc6 2.24-5
ii libradare2-1.0 1.0+dfsg-1
ii libzip4 1.1.2-1.1
ii zlib1g 1:1.2.8.dfsg-2+b3
--
Pengutronix e.K. | Uwe Kleine-König |
Industrial Linux Solutions | http://www.pengutronix.de/ |
