我想将配置文本作为 argv[1] 传递给 main() 函数，并且已经尝试过命令行。set semihosting args "config txt" ,but it seems like the config txt is argv[0] not argv[1],so how to pass multi arguments to main()?
set semihosting args "config txt" ,but it seems like the config txt is argv[0] not argv[1],so how to pass multi arguments to main()?
Hi againYou wrote:>I tried to launch the FVP model with e.g. "-C cluster.cpu0.semihosting-enable=0" in the Model Parameters field, _and_ have "set semihosting args 1 2 3" in the .ds script.>When connected it shows that semihosting breakpoint address has not be specified.Yes, for an Armv8/9-A/R target system that uses HLT-based semihosting, you must specify the semihosting breakpoint address. This tells the debugger at what address it should set a breakpoint to trap semihosting requests.By default on an Armv8/9-A/R FVP model, the semihosting breakpoint address is at EL3:0x00000200. So you must update your .ds script to, e.g.set semihosting vector ADDR EL3:0x00000200set semihosting enabled onset semihosting args 1 2 3I've tested this on the Cortex-A53 FVP model in Arm DS and it works as expected.The "Model parameters" I used for this were:-C cluster0.NUM_CORES=1 -C bp.secure_memory=false -C semihosting-enable=0
The semihosting breakpoint address will depend on (and is an offset from) the Vector Base Address Register (VBAR) for the current EL.>why disable_sve_traps is necessary in sve examples but not necessary in hardware device like mobile phones.It depends how the target system is initially configured. For an Arm FVP model running bare-metal code, the SVE traps must be disabled to allow SVE code to execute.In a hardware device like a mobile phone, that has an OS running, the OS might have disabled the traps for the application environment for you already.Hope this helpsStephen