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plugins: add inline operation per vcpu

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Extends API with three new functions:
qemu_plugin_register_vcpu_{tb, insn, mem}_exec_inline_per_vcpu().

Those functions takes a qemu_plugin_u64 as input.

This allows to have a thread-safe and type-safe version of inline
operations.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-Id: <20240304130036.124418-5-pierrick.bouvier@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240305121005.3528075-18-alex.bennee@linaro.org>
This commit is contained in:
Pierrick Bouvier 2024-03-05 12:09:53 +00:00 • committed by Alex Bennée
parent 62f92b8d97
commit 0bcebaba45
7 changed files with 126 additions and 2 deletions
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1
include/qemu/plugin.h
View file

@ -92,6 +92,7 @@ struct qemu_plugin_dyn_cb {
/* fields specific to each dyn_cb type go here */
union {
struct {
qemu_plugin_u64 entry;
enum qemu_plugin_op op;
uint64_t imm;
} inline_insn;

51
include/qemu/qemu-plugin.h
View file

@ -328,6 +328,22 @@ void qemu_plugin_register_vcpu_tb_exec_inline(struct qemu_plugin_tb *tb,
enum qemu_plugin_op op,
void *ptr, uint64_t imm);
/**
* qemu_plugin_register_vcpu_tb_exec_inline_per_vcpu() - execution inline op
* @tb: the opaque qemu_plugin_tb handle for the translation
* @op: the type of qemu_plugin_op (e.g. ADD_U64)
* @entry: entry to run op
* @imm: the op data (e.g. 1)
*
* Insert an inline op on a given scoreboard entry.
*/
QEMU_PLUGIN_API
void qemu_plugin_register_vcpu_tb_exec_inline_per_vcpu(
struct qemu_plugin_tb *tb,
enum qemu_plugin_op op,
qemu_plugin_u64 entry,
uint64_t imm);
/**
* qemu_plugin_register_vcpu_insn_exec_cb() - register insn execution cb
* @insn: the opaque qemu_plugin_insn handle for an instruction
@ -358,6 +374,22 @@ void qemu_plugin_register_vcpu_insn_exec_inline(struct qemu_plugin_insn *insn,
enum qemu_plugin_op op,
void *ptr, uint64_t imm);
/**
* qemu_plugin_register_vcpu_insn_exec_inline_per_vcpu() - insn exec inline op
* @insn: the opaque qemu_plugin_insn handle for an instruction
* @op: the type of qemu_plugin_op (e.g. ADD_U64)
* @entry: entry to run op
* @imm: the op data (e.g. 1)
*
* Insert an inline op to every time an instruction executes.
*/
QEMU_PLUGIN_API
void qemu_plugin_register_vcpu_insn_exec_inline_per_vcpu(
struct qemu_plugin_insn *insn,
enum qemu_plugin_op op,
qemu_plugin_u64 entry,
uint64_t imm);
/**
* qemu_plugin_tb_n_insns() - query helper for number of insns in TB
* @tb: opaque handle to TB passed to callback
@ -583,7 +615,24 @@ void qemu_plugin_register_vcpu_mem_inline(struct qemu_plugin_insn *insn,
enum qemu_plugin_op op, void *ptr,
uint64_t imm);
/**
* qemu_plugin_register_vcpu_mem_inline_per_vcpu() - inline op for mem access
* @insn: handle for instruction to instrument
* @rw: apply to reads, writes or both
* @op: the op, of type qemu_plugin_op
* @entry: entry to run op
* @imm: immediate data for @op
*
* This registers a inline op every memory access generated by the
* instruction.
*/
QEMU_PLUGIN_API
void qemu_plugin_register_vcpu_mem_inline_per_vcpu(
struct qemu_plugin_insn *insn,
enum qemu_plugin_mem_rw rw,
enum qemu_plugin_op op,
qemu_plugin_u64 entry,
uint64_t imm);
typedef void
(*qemu_plugin_vcpu_syscall_cb_t)(qemu_plugin_id_t id, unsigned int vcpu_index,