mirror of https://gitlab.com/qemu-project/qemu
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
132 lines
3.1 KiB
C
132 lines
3.1 KiB
C
/*
|
|
* QEMU Plugin API - System specific implementations
|
|
*
|
|
* This provides the APIs that have a specific system implementation
|
|
* or are only relevant to system-mode.
|
|
*
|
|
* Copyright (C) 2017, Emilio G. Cota <cota@braap.org>
|
|
* Copyright (C) 2019-2025, Linaro
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0-or-later
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "qemu/main-loop.h"
|
|
#include "qapi/error.h"
|
|
#include "migration/blocker.h"
|
|
#include "hw/boards.h"
|
|
#include "qemu/plugin-memory.h"
|
|
#include "qemu/plugin.h"
|
|
|
|
/*
|
|
* In system mode we cannot trace the binary being executed so the
|
|
* helpers all return NULL/0.
|
|
*/
|
|
const char *qemu_plugin_path_to_binary(void)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
uint64_t qemu_plugin_start_code(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
uint64_t qemu_plugin_end_code(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
uint64_t qemu_plugin_entry_code(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Virtual Memory queries
|
|
*/
|
|
|
|
static __thread struct qemu_plugin_hwaddr hwaddr_info;
|
|
|
|
struct qemu_plugin_hwaddr *qemu_plugin_get_hwaddr(qemu_plugin_meminfo_t info,
|
|
uint64_t vaddr)
|
|
{
|
|
CPUState *cpu = current_cpu;
|
|
unsigned int mmu_idx = get_mmuidx(info);
|
|
enum qemu_plugin_mem_rw rw = get_plugin_meminfo_rw(info);
|
|
hwaddr_info.is_store = (rw & QEMU_PLUGIN_MEM_W) != 0;
|
|
|
|
assert(mmu_idx < NB_MMU_MODES);
|
|
|
|
if (!tlb_plugin_lookup(cpu, vaddr, mmu_idx,
|
|
hwaddr_info.is_store, &hwaddr_info)) {
|
|
error_report("invalid use of qemu_plugin_get_hwaddr");
|
|
return NULL;
|
|
}
|
|
|
|
return &hwaddr_info;
|
|
}
|
|
|
|
bool qemu_plugin_hwaddr_is_io(const struct qemu_plugin_hwaddr *haddr)
|
|
{
|
|
return haddr->is_io;
|
|
}
|
|
|
|
uint64_t qemu_plugin_hwaddr_phys_addr(const struct qemu_plugin_hwaddr *haddr)
|
|
{
|
|
if (haddr) {
|
|
return haddr->phys_addr;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
const char *qemu_plugin_hwaddr_device_name(const struct qemu_plugin_hwaddr *h)
|
|
{
|
|
if (h && h->is_io) {
|
|
MemoryRegion *mr = h->mr;
|
|
if (!mr->name) {
|
|
unsigned maddr = (uintptr_t)mr;
|
|
g_autofree char *temp = g_strdup_printf("anon%08x", maddr);
|
|
return g_intern_string(temp);
|
|
} else {
|
|
return g_intern_string(mr->name);
|
|
}
|
|
} else {
|
|
return g_intern_static_string("RAM");
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Time control
|
|
*/
|
|
static bool has_control;
|
|
static Error *migration_blocker;
|
|
|
|
const void *qemu_plugin_request_time_control(void)
|
|
{
|
|
if (!has_control) {
|
|
has_control = true;
|
|
error_setg(&migration_blocker,
|
|
"TCG plugin time control does not support migration");
|
|
migrate_add_blocker(&migration_blocker, NULL);
|
|
return &has_control;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static void advance_virtual_time__async(CPUState *cpu, run_on_cpu_data data)
|
|
{
|
|
int64_t new_time = data.host_ulong;
|
|
qemu_clock_advance_virtual_time(new_time);
|
|
}
|
|
|
|
void qemu_plugin_update_ns(const void *handle, int64_t new_time)
|
|
{
|
|
if (handle == &has_control) {
|
|
/* Need to execute out of cpu_exec, so bql can be locked. */
|
|
async_run_on_cpu(current_cpu,
|
|
advance_virtual_time__async,
|
|
RUN_ON_CPU_HOST_ULONG(new_time));
|
|
}
|
|
}
|