diff options
| author | Pierrick Bouvier <pierrick.bouvier@linaro.org> | 2024-03-05 12:09:52 +0000 |
|---|---|---|
| committer | Alex Bennée <alex.bennee@linaro.org> | 2024-03-06 12:35:26 +0000 |
| commit | 62f92b8d978aba5de931323c3de788ccb2dbd87c (patch) | |
| tree | bcd8ccf02d24bf604cf1a3638ac66fd8528bd600 /plugins | |
| parent | 8042e2eadfd61dcdae321c3632f06d188521bdf5 (diff) | |
plugins: implement inline operation relative to cpu_index
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 <richard.henderson@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-Id: <20240304130036.124418-4-pierrick.bouvier@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240305121005.3528075-17-alex.bennee@linaro.org>
Diffstat (limited to 'plugins')
| -rw-r--r-- | plugins/api.c | 3 | ||||
| -rw-r--r-- | plugins/core.c | 12 | ||||
| -rw-r--r-- | plugins/plugin.h | 2 |
3 files changed, 11 insertions, 6 deletions
diff --git a/plugins/api.c b/plugins/api.c index 8910cbb2c4..fa1daee825 100644 --- a/plugins/api.c +++ b/plugins/api.c @@ -106,7 +106,8 @@ void qemu_plugin_register_vcpu_tb_exec_inline(struct qemu_plugin_tb *tb, void *ptr, uint64_t imm) { if (!tb->mem_only) { - plugin_register_inline_op(&tb->cbs[PLUGIN_CB_INLINE], 0, op, ptr, imm); + plugin_register_inline_op(&tb->cbs[PLUGIN_CB_INLINE], + 0, op, ptr, imm); } } diff --git a/plugins/core.c b/plugins/core.c index 63f4c6c6ce..65d5611f79 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(); diff --git a/plugins/plugin.h b/plugins/plugin.h index 043c740067..3bf1aaf5c2 100644 --- a/plugins/plugin.h +++ b/plugins/plugin.h @@ -99,7 +99,7 @@ void plugin_register_vcpu_mem_cb(GArray **arr, enum qemu_plugin_mem_rw rw, void *udata); -void exec_inline_op(struct qemu_plugin_dyn_cb *cb); +void exec_inline_op(struct qemu_plugin_dyn_cb *cb, int cpu_index); int plugin_num_vcpus(void); |