We need to keep a local per-cpu copy of the data as other threads may be running. Currently we can provide insight as to if the access was IO or not and give the offset into a given device (usually the main RAMBlock). We store enough information to get details such as the MemoryRegion which might be useful in later expansions to the API. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
41 lines
981 B
C
41 lines
981 B
C
/*
|
|
* Plugin Memory API
|
|
*
|
|
* Copyright (c) 2019 Linaro Ltd
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0-or-later
|
|
*/
|
|
|
|
#ifndef _PLUGIN_MEMORY_H_
|
|
#define _PLUGIN_MEMORY_H_
|
|
|
|
struct qemu_plugin_hwaddr {
|
|
bool is_io;
|
|
bool is_store;
|
|
union {
|
|
struct {
|
|
MemoryRegionSection *section;
|
|
hwaddr offset;
|
|
} io;
|
|
struct {
|
|
uint64_t hostaddr;
|
|
} ram;
|
|
} v;
|
|
};
|
|
|
|
/**
|
|
* tlb_plugin_lookup: query last TLB lookup
|
|
* @cpu: cpu environment
|
|
*
|
|
* This function can be used directly after a memory operation to
|
|
* query information about the access. It is used by the plugin
|
|
* infrastructure to expose more information about the address.
|
|
*
|
|
* It would only fail if not called from an instrumented memory access
|
|
* which would be an abuse of the API.
|
|
*/
|
|
bool tlb_plugin_lookup(CPUState *cpu, target_ulong addr, int mmu_idx,
|
|
bool is_store, struct qemu_plugin_hwaddr *data);
|
|
|
|
#endif /* _PLUGIN_MEMORY_H_ */
|