diff options
Diffstat (limited to 'qemu-options.hx')
| -rw-r--r-- | qemu-options.hx | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/qemu-options.hx b/qemu-options.hx index 5a4ac8e239..753bfce411 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -4116,6 +4116,12 @@ STEXI @item -semihosting @findex -semihosting Enable semihosting mode (ARM, M68K, Xtensa, MIPS, Nios II only). + +Note that this allows guest direct access to the host filesystem, so +should only be used with a trusted guest OS. + +See the -semihosting-config option documentation for further information +about the facilities this enables. ETEXI DEF("semihosting-config", HAS_ARG, QEMU_OPTION_semihosting_config, "-semihosting-config [enable=on|off][,target=native|gdb|auto][,chardev=id][,arg=str[,...]]\n" \ @@ -4126,6 +4132,18 @@ STEXI @item -semihosting-config [enable=on|off][,target=native|gdb|auto][,chardev=id][,arg=str[,...]] @findex -semihosting-config Enable and configure semihosting (ARM, M68K, Xtensa, MIPS, Nios II only). + +Note that this allows guest direct access to the host filesystem, so +should only be used with a trusted guest OS. + +On Arm this implements the standard semihosting API, version 2.0. + +On M68K this implements the "ColdFire GDB" interface used by libgloss. + +Xtensa semihosting provides basic file IO calls, such as +open/read/write/seek/select. Tensilica baremetal libc for ISS and +linux platform "sim" use this interface. + @table @option @item target=@code{native|gdb|auto} Defines where the semihosting calls will be addressed, to QEMU (@code{native}) |