From 455a2d265cf6c3947243d772b9e5d1b8dd13a9bf Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Alex=20Benn=C3=A9e?= Date: Tue, 4 Mar 2025 22:24:34 +0000 Subject: plugins/api: split out the vaddr/hwaddr helpers MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit These only work for system-mode and are NOPs for user-mode. Reviewed-by: Richard Henderson Signed-off-by: Alex Bennée Message-Id: <20250304222439.2035603-28-alex.bennee@linaro.org> --- plugins/api-user.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 plugins/api-user.c (limited to 'plugins/api-user.c') diff --git a/plugins/api-user.c b/plugins/api-user.c new file mode 100644 index 0000000..867b420 --- /dev/null +++ b/plugins/api-user.c @@ -0,0 +1,40 @@ +/* + * QEMU Plugin API - user-mode only implementations + * + * This provides the APIs that have a user-mode specific + * implementations or are only relevant to user-mode. + * + * Copyright (C) 2017, Emilio G. Cota + * Copyright (C) 2019-2025, Linaro + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "qemu/osdep.h" +#include "qemu/plugin.h" + +/* + * Virtual Memory queries - these are all NOPs for user-mode which + * only ever has visibility of virtual addresses. + */ + +struct qemu_plugin_hwaddr *qemu_plugin_get_hwaddr(qemu_plugin_meminfo_t info, + uint64_t vaddr) +{ + return NULL; +} + +bool qemu_plugin_hwaddr_is_io(const struct qemu_plugin_hwaddr *haddr) +{ + return false; +} + +uint64_t qemu_plugin_hwaddr_phys_addr(const struct qemu_plugin_hwaddr *haddr) +{ + return 0; +} + +const char *qemu_plugin_hwaddr_device_name(const struct qemu_plugin_hwaddr *h) +{ + return g_intern_static_string("Invalid"); +} -- cgit v1.1 From 1d3e745f7ada921d544f29fbf84c6f0f63025e61 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Alex=20Benn=C3=A9e?= Date: Tue, 4 Mar 2025 22:24:35 +0000 Subject: plugins/api: split out time control helpers MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit These are only usable in system mode where we control the timer. For user-mode make them NOPs. Reviewed-by: Richard Henderson Signed-off-by: Alex Bennée Message-Id: <20250304222439.2035603-29-alex.bennee@linaro.org> --- plugins/api-user.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'plugins/api-user.c') diff --git a/plugins/api-user.c b/plugins/api-user.c index 867b420..28704a8 100644 --- a/plugins/api-user.c +++ b/plugins/api-user.c @@ -12,6 +12,7 @@ #include "qemu/osdep.h" #include "qemu/plugin.h" +#include "exec/log.h" /* * Virtual Memory queries - these are all NOPs for user-mode which @@ -38,3 +39,19 @@ const char *qemu_plugin_hwaddr_device_name(const struct qemu_plugin_hwaddr *h) { return g_intern_static_string("Invalid"); } + +/* + * Time control - for user mode the only real time is wall clock time + * so realistically all you can do in user mode is slow down execution + * which doesn't require the ability to mess with the clock. + */ + +const void *qemu_plugin_request_time_control(void) +{ + return NULL; +} + +void qemu_plugin_update_ns(const void *handle, int64_t new_time) +{ + qemu_log_mask(LOG_UNIMP, "user-mode can't control time"); +} -- cgit v1.1