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Unicorn CPU emulator framework (ARM, AArch64, M68K, Mips, Sparc, X86)
6687 commits 7 branches 6 tags 35 MiB
C 90%
Python 3.9%
Java 1.5%
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Laurent Vivier aa69ab54ad target/m68k: implement fmove.l #<data>,FPCR 
The immediate value mode was ignored and instruction execution
ends to an invalid access mode.

This was found running 'R' that set FPSR to 0 at startup with
a 'fmove.l #0,FPSR' in qemu-system-m68k emulation and triggers a
kernel crash:

[ 56.640000] *** ADDRESS ERROR *** FORMAT=2
[ 56.640000] Current process id is 728
[ 56.640000] BAD KERNEL TRAP: 00000000
[ 56.640000] Modules linked in: sg evdev mac_hid ip_tables x_tables sha1_generic hmac ipv6 nf_defrag_ipv6 autofs4 ext4 crc16 mbcache jbd2 crc32c_generic sd_mod t10_pi crc_t10dif crct10dif_generic crct10dif_common sr_mod cdrom mac_esp macsonic esp_scsi
[ 56.640000] PC: [<00016a2c>] X_UNSUPP+0x2c/0x3c
[ 56.640000] SR: 2004 SP: 3eb5e68c a2: c02e239a
[ 56.640000] d0: 00000040 d1: 00000002 d2: 8002adec d3: 8002ad50
[ 56.640000] d4: 8002c768 d5: 0000000d a0: ffffffc2 a1: ffffffc1
[ 56.640000] Process R (pid: 728, task=a3dfda5d)
[ 56.640000] Frame format=2 instr addr=00000000
[ 56.650000] Stack from 3a4d9f30:
[ 56.650000] 41000000 00000002 00000002 ffffffc2 ffffffc1 1fff0000 80000000 00000000
[ 56.650000] 3fbf0000 80000000 00000000 00000000 20000000 00000000 7fff0000 ffffffff
[ 56.650000] ffffffff 00000000 00050008 00000000 8000067c c02c2000 efffee20 000002d8
[ 56.650000] 00002a28 3a4d9f98 00000002 00000014 fffffffe 8002c768 00000002 00000041
[ 56.650000] 00000002 c041fc58 c0743758 ffffffff 00000000 0008c075 00002b24 00000012
[ 56.650000] 000007d0 00000024 00000002 c05bef04 c05bef04 0000005e 00000077 c28aca70
[ 56.650000] Call Trace: [<00050008>] copy_overflow+0x10/0x28
[ 56.650000] [<00002a28>] buserr+0x20/0x28
[ 56.650000] [<0008c075>] bpf_check+0x57f/0x1cfa
[ 56.650000] [<00002b24>] syscall+0x8/0xc
[ 56.650000] [<0000c019>] dn_sched_init+0x75/0x88
[ 56.650000] Code: 1017 0200 00f0 0c00 0040 66ff 0000 05ac <f23c> 8800 0000 0000 f23c 9000 0000 0000 222e ff84 082e 0005 ff1c 6600 000a 0281
[ 56.650000] Disabling lock debugging due to kernel taint
...

Backports commit 6a0e8bb4956c34328f4624e20bd3a6c2b1d90adc from qemu
2020-06-14 21:11:54 -04:00
bindings python: handle UC_ERR_TIMEOUT, so sample_x86.py behaves like sample_x86.c 2020-01-14 09:53:10 -05:00
docs docs: we no longer requires python2 in building 2020-01-14 09:07:44 -05:00
include Timeout error (#1173) 2020-01-14 09:42:57 -05:00
msvc msvc: Define CONFIG_TCG 2019-01-30 13:52:30 -05:00
qemu target/m68k: implement fmove.l #<data>,FPCR 2020-06-14 21:11:54 -04:00
samples Timeout error (#1173) 2020-01-14 09:42:57 -05:00
tests Tests, fixes on third platform. (#1168) 2020-01-14 09:45:55 -05:00
.appveyor.yml MSYS test (#852) 2017-06-25 10:11:35 +08:00
.gitignore target/riscv: Initial introduction of the RISC-V target 2019-03-08 21:46:10 -05:00
.travis.yml use new travis osx image and brew (#935) 2018-01-05 10:29:49 +08:00
AUTHORS.TXT import 2015-08-21 15:04:50 +08:00
Brewfile Update Brewfile 2017-09-30 17:36:44 +07:00
ChangeLog update ChangeLog 2017-04-20 13:28:02 +08:00
config.mk Fix document file extension 2016-08-08 17:33:49 +09:00
COPYING import 2015-08-21 15:04:50 +08:00
COPYING.LGPL2 LGPL2 for all header files under include/unicorn/ 2017-12-16 10:08:42 +08:00
COPYING_GLIB glib_compat: add COPYING_GLIB 2016-12-27 10:15:08 +08:00
CREDITS.TXT Adding Philippe Antoine to CREDITS 2018-10-06 04:50:10 -04:00
install-cmocka-linux.sh Start moving examples in S files (#851) 2017-06-25 10:14:22 +08:00
list.c callback to count number of instructions in uc_emu_start() should be executed first. fix #727 2017-06-16 13:22:38 +08:00
make.sh remove broken iOS builds (#1109) 2019-08-08 20:09:05 -04:00
Makefile uc: Restore armeb target 2019-04-19 15:29:25 -04:00
msvc.bat add msvc.bat 2017-04-21 15:35:40 +08:00
pkgconfig.mk bump extra version to 2 2017-04-21 15:30:40 +08:00
README.md add Clojure 2017-12-23 00:32:33 +08:00
uc.c Timeout error (#1173) 2020-01-14 09:42:57 -05:00
windows_export.bat Make the call out to visual studio extremely resilient 2017-01-02 03:32:48 -08:00

README.md

Unicorn Engine

Join the chat at https://gitter.im/unicorn-engine/chat

Build Status Build status

Unicorn is a lightweight, multi-platform, multi-architecture CPU emulator framework based on QEMU.

Unicorn offers some unparalleled features:

  • Multi-architecture: ARM, ARM64 (ARMv8), M68K, MIPS, SPARC, and X86 (16, 32, 64-bit)
  • Clean/simple/lightweight/intuitive architecture-neutral API
  • Implemented in pure C language, with bindings for Crystal, Clojure, Visual Basic, Perl, Rust, Ruby, Python, Java, .NET, Go, Delphi/Free Pascal and Haskell.
  • Native support for Windows & *nix (with Mac OSX, Linux, *BSD & Solaris confirmed)
  • High performance via Just-In-Time compilation
  • Support for fine-grained instrumentation at various levels
  • Thread-safety by design
  • Distributed under free software license GPLv2

Further information is available at http://www.unicorn-engine.org

License

This project is released under the GPL license.

Compilation & Docs

See docs/COMPILE.md file for how to compile and install Unicorn.

More documentation is available in docs/README.md.

Contact

Contact us via mailing list, email or twitter for any questions.

Contribute

If you want to contribute, please pick up something from our Github issues.

We also maintain a list of more challenged problems in a TODO list.

CREDITS.TXT records important contributors of our project.