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plugins: conditional callbacks

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Extend plugins API to support callback called with a given criteria
(evaluated inline).

Added functions:
- qemu_plugin_register_vcpu_tb_exec_cond_cb
- qemu_plugin_register_vcpu_insn_exec_cond_cb

They expect as parameter a condition, a qemu_plugin_u64_t (op1) and an
immediate (op2). Callback is called if op1 |cond| op2 is true.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-Id: <20240502211522.346467-6-pierrick.bouvier@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
[AJB: fix re-base conflict with tb_is_mem_only()]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240514174253.694591-8-alex.bennee@linaro.org>
This commit is contained in:
Pierrick Bouvier 2024-05-14 18:42:49 +01:00 • committed by Alex Bennée
parent a1c9bf2514
commit 7de77d3788
7 changed files with 213 additions and 0 deletions
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39
plugins/api.c
View file

@ -102,6 +102,25 @@ void qemu_plugin_register_vcpu_tb_exec_cb(struct qemu_plugin_tb *tb,
}
}
void qemu_plugin_register_vcpu_tb_exec_cond_cb(struct qemu_plugin_tb *tb,
qemu_plugin_vcpu_udata_cb_t cb,
enum qemu_plugin_cb_flags flags,
enum qemu_plugin_cond cond,
qemu_plugin_u64 entry,
uint64_t imm,
void *udata)
{
if (cond == QEMU_PLUGIN_COND_NEVER || tb_is_mem_only()) {
return;
}
if (cond == QEMU_PLUGIN_COND_ALWAYS) {
qemu_plugin_register_vcpu_tb_exec_cb(tb, cb, flags, udata);
return;
}
plugin_register_dyn_cond_cb__udata(&tb->cbs, cb, flags,
cond, entry, imm, udata);
}
void qemu_plugin_register_vcpu_tb_exec_inline_per_vcpu(
struct qemu_plugin_tb *tb,
enum qemu_plugin_op op,
@ -123,6 +142,26 @@ void qemu_plugin_register_vcpu_insn_exec_cb(struct qemu_plugin_insn *insn,
}
}
void qemu_plugin_register_vcpu_insn_exec_cond_cb(
struct qemu_plugin_insn *insn,
qemu_plugin_vcpu_udata_cb_t cb,
enum qemu_plugin_cb_flags flags,
enum qemu_plugin_cond cond,
qemu_plugin_u64 entry,
uint64_t imm,
void *udata)
{
if (cond == QEMU_PLUGIN_COND_NEVER || tb_is_mem_only()) {
return;
}
if (cond == QEMU_PLUGIN_COND_ALWAYS) {
qemu_plugin_register_vcpu_insn_exec_cb(insn, cb, flags, udata);
return;
}
plugin_register_dyn_cond_cb__udata(&insn->insn_cbs, cb, flags,
cond, entry, imm, udata);
}
void qemu_plugin_register_vcpu_insn_exec_inline_per_vcpu(
struct qemu_plugin_insn *insn,
enum qemu_plugin_op op,