diff options
Diffstat (limited to 'target-lm32/README')
| -rw-r--r-- | target-lm32/README | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/target-lm32/README b/target-lm32/README index a1c2c7eb1e..ba3508a711 100644 --- a/target-lm32/README +++ b/target-lm32/README @@ -16,14 +16,13 @@ This will make serial0 (the lm32_uart) and serial1 (the JTAG UART) available as virtual consoles. -Programmatically terminate the emulator ----------------------------------------- -Originally neither the LatticeMico32 nor its peripherals support a -mechanism to shut down the machine. Emulation aware programs can write to a -to a special register within the system control block to shut down the -virtual machine. For more details see hw/lm32_sys.c. The lm32-evr is the -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 |