qemu/include/exec/plugin-gen.h
Richard Henderson b21af662c1 accel/tcg: Use DisasContextBase in plugin_gen_tb_start
Use the pc coming from db->pc_first rather than the TB.

Use the cached host_addr rather than re-computing for the
first page.  We still need a separate lookup for the second
page because it won't be computed for DisasContextBase until
the translator actually performs a read from the page.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-10-03 20:53:31 -07:00

81 lines
1.9 KiB
C

/*
* Copyright (C) 2017, Emilio G. Cota <cota@braap.org>
*
* License: GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
* plugin-gen.h - TCG-dependent definitions for generating plugin code
*
* This header should be included only from plugin.c and C files that emit
* TCG code.
*/
#ifndef QEMU_PLUGIN_GEN_H
#define QEMU_PLUGIN_GEN_H
#include "qemu/plugin.h"
#include "tcg/tcg.h"
struct DisasContextBase;
#ifdef CONFIG_PLUGIN
bool plugin_gen_tb_start(CPUState *cpu, const struct DisasContextBase *db,
bool supress);
void plugin_gen_tb_end(CPUState *cpu);
void plugin_gen_insn_start(CPUState *cpu, const struct DisasContextBase *db);
void plugin_gen_insn_end(void);
void plugin_gen_disable_mem_helpers(void);
void plugin_gen_empty_mem_callback(TCGv addr, uint32_t info);
static inline void plugin_insn_append(abi_ptr pc, const void *from, size_t size)
{
struct qemu_plugin_insn *insn = tcg_ctx->plugin_insn;
abi_ptr off;
if (insn == NULL) {
return;
}
off = pc - insn->vaddr;
if (off < insn->data->len) {
g_byte_array_set_size(insn->data, off);
} else if (off > insn->data->len) {
/* we have an unexpected gap */
g_assert_not_reached();
}
insn->data = g_byte_array_append(insn->data, from, size);
}
#else /* !CONFIG_PLUGIN */
static inline bool
plugin_gen_tb_start(CPUState *cpu, const struct DisasContextBase *db, bool sup)
{
return false;
}
static inline
void plugin_gen_insn_start(CPUState *cpu, const struct DisasContextBase *db)
{ }
static inline void plugin_gen_insn_end(void)
{ }
static inline void plugin_gen_tb_end(CPUState *cpu)
{ }
static inline void plugin_gen_disable_mem_helpers(void)
{ }
static inline void plugin_gen_empty_mem_callback(TCGv addr, uint32_t info)
{ }
static inline void plugin_insn_append(abi_ptr pc, const void *from, size_t size)
{ }
#endif /* CONFIG_PLUGIN */
#endif /* QEMU_PLUGIN_GEN_H */