#include <fcntl.h>
#include <inttypes.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <stdio.h>
#include <stdbool.h>

#include <qemu/qemu-plugin.h>

#include <InsnCategory-riscv.h>

FILE *fp;

QEMU_PLUGIN_EXPORT int qemu_plugin_version = QEMU_PLUGIN_VERSION;

uint32_t is_SWinsn(struct qemu_plugin_insn *insnPtr)
{
	uint32_t insn = *((uint32_t *)qemu_plugin_insn_data(insnPtr)) & 0xFFFFFFFF;
	if (qemu_plugin_insn_size(insnPtr) == 4) // is a 32 bits insn
	{
		if (riscv32_insn_class[0].pattern == (insn & riscv32_insn_class[0].mask)) // is a sw
		{
			return 1;
		}
	}
	return 0;
}

/* Call-back put on the sw insn */
static void vcpu_mem(unsigned int cpu_index, qemu_plugin_meminfo_t meminfo,
										 uint64_t vaddr, void *insnPtr)
{
	char *disas = qemu_plugin_insn_disas(insnPtr);
	void *haddr = qemu_plugin_insn_haddr(insnPtr);
	fprintf(fp, "%p,    %s\n", haddr, disas);
}

/* Call-back triggered on translation block */
static void vcpu_tb_trans(qemu_plugin_id_t id, struct qemu_plugin_tb *tb)
{
	struct qemu_plugin_insn *insnPtr;
	size_t n = qemu_plugin_tb_n_insns(tb);
	for (size_t insnN = 0; insnN < n; insnN++)
	{
		insnPtr = qemu_plugin_tb_get_insn(tb, insnN);
		if (is_SWinsn(insnPtr))
		{
			fprintf(fp, "\ninsn sw detecté\n");
			char *disas = qemu_plugin_insn_disas(insnPtr);
			void *haddr = qemu_plugin_insn_haddr(insnPtr);
			fprintf(fp, "%p,    %s\n\n", haddr, disas);
			qemu_plugin_register_vcpu_mem_cb(insnPtr, vcpu_mem,
																			 QEMU_PLUGIN_CB_RW_REGS,
																			 QEMU_PLUGIN_MEM_RW,
																			 (void *)insnPtr);
		}
	}
}

// Call-back triggered on termination of the guest program
static void plugin_exit(qemu_plugin_id_t id, void *p)
{
	fprintf(fp, "fin plugin\n");
	fclose(fp);
}

QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id,
																					 const qemu_info_t *info,
																					 int argc, char **argv)
{	
	fp = fopen("log.txt", "w");
	qemu_plugin_register_vcpu_tb_trans_cb(id, vcpu_tb_trans);
  qemu_plugin_register_atexit_cb(id, plugin_exit, NULL);
	return 0;
}