motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-09 02:24:58 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

target-lm32: add semihosting support

Browse source 
Intercept certain system calls if semihosting is enabled. This should
behave like the GDB simulator.

Signed-off-by: Michael Walle <michael@walle.cc>
This commit is contained in:
Michael Walle 2014-04-22 20:18:42 +02:00
parent a946ce8020
commit f7bbcfb5c3
6 changed files with 240 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

9
target-lm32/README
View file

@ -26,6 +26,15 @@ first BSP which instantiate this model. A (32 bit) write to 0xfff0000
causes a vm shutdown.
Semihosting
-----------
Semihosting on this target is supported. Some system calls like read, write
and exit are executed on the host if semihosting is enabled. See
target/lm32-semi.c for all supported system calls. Emulation aware programs
can use this mechanism to shut down the virtual machine and print to the
host console. See the tcg tests for an example.
Special instructions
--------------------
The translation recognizes one special instruction to halt the cpu: