From 62f92b8d978aba5de931323c3de788ccb2dbd87c Mon Sep 17 00:00:00 2001 From: Pierrick Bouvier Date: Tue, 5 Mar 2024 12:09:52 +0000 Subject: plugins: implement inline operation relative to cpu_index MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Instead of working on a fixed memory location, allow to address it based on cpu_index, an element size and a given offset. Result address: ptr + offset + cpu_index * element_size. With this, we can target a member in a struct array from a base pointer. Current semantic is not modified, thus inline operation still targets always the same memory location. Reviewed-by: Richard Henderson Signed-off-by: Pierrick Bouvier Message-Id: <20240304130036.124418-4-pierrick.bouvier@linaro.org> Signed-off-by: Alex Bennée Message-Id: <20240305121005.3528075-17-alex.bennee@linaro.org> --- plugins/core.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) (limited to 'plugins/core.c') diff --git a/plugins/core.c b/plugins/core.c index 63f4c6c..65d5611 100644 --- a/plugins/core.c +++ b/plugins/core.c @@ -318,7 +318,8 @@ static struct qemu_plugin_dyn_cb *plugin_get_dyn_cb(GArray **arr) void plugin_register_inline_op(GArray **arr, enum qemu_plugin_mem_rw rw, - enum qemu_plugin_op op, void *ptr, + enum qemu_plugin_op op, + void *ptr, uint64_t imm) { struct qemu_plugin_dyn_cb *dyn_cb; @@ -474,9 +475,12 @@ void qemu_plugin_flush_cb(void) plugin_cb__simple(QEMU_PLUGIN_EV_FLUSH); } -void exec_inline_op(struct qemu_plugin_dyn_cb *cb) +void exec_inline_op(struct qemu_plugin_dyn_cb *cb, int cpu_index) { - uint64_t *val = cb->userp; + char *ptr = cb->userp; + size_t elem_size = 0; + size_t offset = 0; + uint64_t *val = (uint64_t *)(ptr + offset + cpu_index * elem_size); switch (cb->inline_insn.op) { case QEMU_PLUGIN_INLINE_ADD_U64: @@ -509,7 +513,7 @@ void qemu_plugin_vcpu_mem_cb(CPUState *cpu, uint64_t vaddr, vaddr, cb->userp); break; case PLUGIN_CB_INLINE: - exec_inline_op(cb); + exec_inline_op(cb, cpu->cpu_index); break; default: g_assert_not_reached(); -- cgit v1.1