mirror of
https://gitlab.com/qemu-project/qemu
synced 2024-09-16 01:03:31 +00:00
dbca083513
For debugging purposes at the early stage of the bootup process, the SeaBIOS-hppa firmware sometimes needs to output characters to the serial console. Note that the serial console is the default output method for parisc machines. At this stage PCI busses and other devices haven't been initialized yet. So, SeaBIOS-hppa will not be able to find the correct I/O ports for the serial ports yet. Instead, add an emulation for the "diag 0x101" opcode to assist here. Without any other dependencies, SeaBIOS-hppa can then load the character to be printed in register %r26 and issue the diag assembly instruction. The qemu diag_console_output() helper function will then print that character to the first serial port. Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> |
||
|---|---|---|
| .. | ||
| cpu-param.h | ||
| cpu-qom.h | ||
| cpu.c | ||
| cpu.h | ||
| fpu_helper.c | ||
| gdbstub.c | ||
| helper.c | ||
| helper.h | ||
| insns.decode | ||
| int_helper.c | ||
| Kconfig | ||
| machine.c | ||
| mem_helper.c | ||
| meson.build | ||
| op_helper.c | ||
| sys_helper.c | ||
| trace-events | ||
| trace.h | ||
| translate.c | ||