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Re: [RFC v9 18/32] cpu: Move synchronize_from_tb() to tcg_ops
From: |
Alex Bennée |
Subject: |
Re: [RFC v9 18/32] cpu: Move synchronize_from_tb() to tcg_ops |
Date: |
Wed, 09 Dec 2020 10:50:29 +0000 |
User-agent: |
mu4e 1.5.7; emacs 28.0.50 |
Claudio Fontana <cfontana@suse.de> writes:
> From: Eduardo Habkost <ehabkost@redhat.com>
>
> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
> [claudio: wrapped in CONFIG_TCG]
> Signed-off-by: Claudio Fontana <cfontana@suse.de>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> ---
> accel/tcg/cpu-exec.c | 4 ++--
> include/hw/core/cpu.h | 8 --------
> include/hw/core/tcg-cpu-ops.h | 14 +++++++++++---
> target/arm/cpu.c | 2 +-
> target/avr/cpu.c | 2 +-
> target/hppa/cpu.c | 2 +-
> target/i386/tcg-cpu.c | 2 +-
> target/microblaze/cpu.c | 2 +-
> target/mips/cpu.c | 2 +-
> target/riscv/cpu.c | 2 +-
> target/rx/cpu.c | 2 +-
> target/sh4/cpu.c | 2 +-
> target/sparc/cpu.c | 2 +-
> target/tricore/cpu.c | 2 +-
> 14 files changed, 24 insertions(+), 24 deletions(-)
>
> diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c
> index 436dfbf155..776415d47e 100644
> --- a/accel/tcg/cpu-exec.c
> +++ b/accel/tcg/cpu-exec.c
> @@ -192,8 +192,8 @@ static inline tcg_target_ulong cpu_tb_exec(CPUState *cpu,
> TranslationBlock *itb)
> TARGET_FMT_lx "] %s\n",
> last_tb->tc.ptr, last_tb->pc,
> lookup_symbol(last_tb->pc));
> - if (cc->synchronize_from_tb) {
> - cc->synchronize_from_tb(cpu, last_tb);
> + if (cc->tcg_ops.synchronize_from_tb) {
> + cc->tcg_ops.synchronize_from_tb(cpu, last_tb);
> } else {
> assert(cc->set_pc);
> cc->set_pc(cpu, last_tb->pc);
> diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h
> index ea648d52ad..83007d262c 100644
> --- a/include/hw/core/cpu.h
> +++ b/include/hw/core/cpu.h
> @@ -110,13 +110,6 @@ struct TranslationBlock;
> * If the target behaviour here is anything other than "set
> * the PC register to the value passed in" then the target must
> * also implement the synchronize_from_tb hook.
> - * @synchronize_from_tb: Callback for synchronizing state from a TCG
> - * #TranslationBlock. This is called when we abandon execution
> - * of a TB before starting it, and must set all parts of the CPU
> - * state which the previous TB in the chain may not have updated.
> - * This always includes at least the program counter; some targets
> - * will need to do more. If this hook is not implemented then the
> - * default is to call @set_pc(tb->pc).
> * @tlb_fill: Callback for handling a softmmu tlb miss or user-only
> * address fault. For system mode, if the access is valid, call
> * tlb_set_page and return true; if the access is invalid, and
> @@ -193,7 +186,6 @@ struct CPUClass {
> void (*get_memory_mapping)(CPUState *cpu, MemoryMappingList *list,
> Error **errp);
> void (*set_pc)(CPUState *cpu, vaddr value);
> - void (*synchronize_from_tb)(CPUState *cpu, struct TranslationBlock *tb);
> bool (*tlb_fill)(CPUState *cpu, vaddr address, int size,
> MMUAccessType access_type, int mmu_idx,
> bool probe, uintptr_t retaddr);
> diff --git a/include/hw/core/tcg-cpu-ops.h b/include/hw/core/tcg-cpu-ops.h
> index 4475ef0996..109291ac52 100644
> --- a/include/hw/core/tcg-cpu-ops.h
> +++ b/include/hw/core/tcg-cpu-ops.h
> @@ -10,9 +10,6 @@
> #ifndef TCG_CPU_OPS_H
> #define TCG_CPU_OPS_H
>
> -/**
> - * struct TcgCpuOperations: TCG operations specific to a CPU class
> - */
> typedef struct TcgCpuOperations {
> /**
> * @initialize: Initalize TCG state
> @@ -20,6 +17,17 @@ typedef struct TcgCpuOperations {
> * Called when the first CPU is realized.
> */
> void (*initialize)(void);
> + /**
> + * @synchronize_from_tb: Synchronize state from a TCG #TranslationBlock
> + *
> + * This is called when we abandon execution of a TB before
> + * starting it, and must set all parts of the CPU state which
> + * the previous TB in the chain may not have updated. This
> + * will need to do more. If this hook is not implemented then
> + * the default is to call
> + * @set_pc(tb->pc).
> + */
We could clean-up the comment here to better fit the javadoc style API
documentation format, i.e.:
/**
* synchronize_from_tb: Synchronize current TCG execution state
* @cpu: current cpu
* @tb: about to be executed #TranslationBlock
*
* This is called when we abandon execution of a TB before
* starting it, and must set all parts of the CPU state which
* the previous TB in the chain may not have updated. This
* will need to do more. If this hook is not implemented then
* the default is to call @set_pc(tb->pc).
*/
<snip>
Otherwise:
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
--
Alex Bennée
- Re: [RFC v9 20/32] cpu: Move tlb_fill to tcg_ops, (continued)
[RFC v9 17/32] accel/tcg: split TCG-only code from cpu_exec_realizefn, Claudio Fontana, 2020/12/08
[RFC v9 18/32] cpu: Move synchronize_from_tb() to tcg_ops, Claudio Fontana, 2020/12/08
Re: [RFC v9 18/32] cpu: Move synchronize_from_tb() to tcg_ops,
Alex Bennée <=
[RFC v9 19/32] cpu: Move cpu_exec_* to tcg_ops, Claudio Fontana, 2020/12/08
[RFC v9 24/32] cpu: move cc->transaction_failed to tcg_ops, Claudio Fontana, 2020/12/08