Convert CPUState to QOM.
- Short-term: Allow inspecting and modifying CPU properties via QOM.
- Short-term: Avoid common target code doing ifs or switches on CPU identifiers.
- target-arm/helper.c: cpu_reset_model_id()
- Short-term: Replace CPU_COMMON macro and duplicated reset code by inheritance.
- Mid-term: Avoid dependency of common code on #defines from cpu.h.
- Mid-term: Ease instantiation of mixed software-visible cores within one target, e.g.
- NXP LPC43xx: Cortex-M4 + Cortex-M0
- ARM big.LITTLE: Cortex-A15 + Cortex-A7
- Freescale Vybrid VF6xx/VF7xx: Cortex-A5 + Cortex-M4
- TI OMAP5: Cortex-A15 + Cortex-M4
- Long-term: Work towards allowing to compile multiple targets into one executable.
- Renesas R-Car H1, M1A: ARM Cortex-A9 + SH-4A
- Renesas R-Home S1: ARM Cortex-A9 + SH-4A + ARM7TDMI-S
- Renesas R-Mobile A1: ARM Cortex-A9 + SH4A
"CPU" name conflict
|struct CPU$archState or
|defined in target-*/cpu.h||???|
|#define CPUState||alias to CPU$archState / CPUState_$arch||dropped in favor of CPU|
|#define CPU_CLASS(class)||cast macro for class|
|#define CPU(obj)||cast macro for object|
|#define CPU_GET_CLASS(obj)||macro to obtain class pointer|
Resolved by renaming existing CPUState to CPUArchState and by using struct CPUState for the object state, while using CPU(obj) as macro for casting.
- Name: Andreas Färber
- Email: firstname.lastname@example.org
QOM CPUState exists, former CPUState is renamed to CPUArchState. All targets have been converted for v1.1-rc0.
Initial field movements from CPUArchState to CPUState and subsequent signature adaptations are on the list.
TLB redesign is still open - suggestions welcome.
Patch series and branches
NB: Due to hosting issues, branches have moved to GitHub.
|qom-cpu-x86, part 3 (classes)|
|qom-cpu-sh4, part 2|
|qom-cpu-unicore32, part 2|
|qom-cpu-alpha, part 2|
|qom-cpu, part 4 (common)||qom-next|
|qom-cpu, part 5 (device)||qom-next|