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target/arm: Support multiple EL change hooks

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Signed-off-by: Aaron Lindsay <alindsay@codeaurora.org>
Message-id: 1523997485-1905-7-git-send-email-alindsay@codeaurora.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Aaron Lindsay 2018-04-26 11:04:39 +01:00 • committed by Peter Maydell
parent d5a5e4c93d
commit 08267487c9
3 changed files with 30 additions and 18 deletions
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20
target/arm/cpu.h
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@ -632,12 +632,17 @@ typedef struct CPUARMState {
} CPUARMState;
/**
* ARMELChangeHook:
* ARMELChangeHookFn:
* type of a function which can be registered via arm_register_el_change_hook()
* to get callbacks when the CPU changes its exception level or mode.
*/
typedef void ARMELChangeHook(ARMCPU *cpu, void *opaque);
typedef void ARMELChangeHookFn(ARMCPU *cpu, void *opaque);
typedef struct ARMELChangeHook ARMELChangeHook;
struct ARMELChangeHook {
ARMELChangeHookFn *hook;
void *opaque;
QLIST_ENTRY(ARMELChangeHook) node;
};
/* These values map onto the return values for
* QEMU_PSCI_0_2_FN_AFFINITY_INFO */
@ -826,8 +831,7 @@ struct ARMCPU {
*/
bool cfgend;
ARMELChangeHook *el_change_hook;
void *el_change_hook_opaque;
QLIST_HEAD(, ARMELChangeHook) el_change_hooks;
int32_t node_id; /* NUMA node this CPU belongs to */
@ -2894,12 +2898,8 @@ static inline AddressSpace *arm_addressspace(CPUState *cs, MemTxAttrs attrs)
* CPU changes exception level or mode. The hook function will be
* passed a pointer to the ARMCPU and the opaque data pointer passed
* to this function when the hook was registered.
*
* Note that we currently only support registering a single hook function,
* and will assert if this function is called twice.
* This facility is intended for the use of the GICv3 emulation.
*/
void arm_register_el_change_hook(ARMCPU *cpu, ARMELChangeHook *hook,
void arm_register_el_change_hook(ARMCPU *cpu, ARMELChangeHookFn *hook,
void *opaque);
/**