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plugins: Merge alloc_tcg_plugin_context into plugin_gen_tb_start

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We don't need to allocate plugin context at startup,
we can wait until we actually use it.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2024-04-04 13:35:43 -10:00
parent e763953a24
commit 34e5e1dde5
2 changed files with 20 additions and 27 deletions
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36
accel/tcg/plugin-gen.c
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@ -305,28 +305,32 @@ static void plugin_gen_inject(struct qemu_plugin_tb *plugin_tb)
bool plugin_gen_tb_start(CPUState *cpu, const DisasContextBase *db)
{
bool ret = false;
struct qemu_plugin_tb *ptb;
if (test_bit(QEMU_PLUGIN_EV_VCPU_TB_TRANS, cpu->plugin_state->event_mask)) {
struct qemu_plugin_tb *ptb = tcg_ctx->plugin_tb;
/* reset callbacks */
if (ptb->cbs) {
g_array_set_size(ptb->cbs, 0);
}
ptb->n = 0;
ret = true;
ptb->mem_helper = false;
tcg_gen_plugin_cb(PLUGIN_GEN_FROM_TB);
if (!test_bit(QEMU_PLUGIN_EV_VCPU_TB_TRANS,
cpu->plugin_state->event_mask)) {
return false;
}
tcg_ctx->plugin_db = db;
tcg_ctx->plugin_insn = NULL;
ptb = tcg_ctx->plugin_tb;
return ret;
if (ptb) {
/* Reset callbacks */
if (ptb->cbs) {
g_array_set_size(ptb->cbs, 0);
}
ptb->n = 0;
ptb->mem_helper = false;
} else {
ptb = g_new0(struct qemu_plugin_tb, 1);
tcg_ctx->plugin_tb = ptb;
ptb->insns = g_ptr_array_new();
}
tcg_gen_plugin_cb(PLUGIN_GEN_FROM_TB);
return true;
}
void plugin_gen_insn_start(CPUState *cpu, const DisasContextBase *db)