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plugins/api: split out the vaddr/hwaddr helpers

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These only work for system-mode and are NOPs for user-mode.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20250304222439.2035603-28-alex.bennee@linaro.org>
This commit is contained in:
Alex Bennée 2025-03-04 22:24:34 +00:00
parent 903e870f24
commit 455a2d265c
4 changed files with 99 additions and 71 deletions
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58
plugins/api-system.c
View file

@ -12,6 +12,10 @@
#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"
/*
@ -37,3 +41,57 @@ 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");
}
}