#ifndef __SCC_X86_ISEL_H__
#define __SCC_X86_ISEL_H__

#include <scc_lir_module.h>
#include <scc_tree_dump.h>

#include "../core_pass/scc_abi_lowering.h"
#include "scc_x86_mir.h"

typedef struct scc_x86_64_isel {
    scc_mir_x86_instr_vec_t instrs;
    scc_mir_func_t *func;
    scc_pos_t pos;
    scc_abi_lowering_t abi_lowering;
} scc_x86_64_isel_t;

void scc_isel_x86_64(scc_mir_module_t *mir_module,
                     const scc_lir_module_t *lir_module,
                     scc_x86_64_isel_t *isel);

// Utils
void scc_x86_emit_move(scc_x86_64_isel_t *isel, scc_x86_operand_value_t dst,
                       scc_x86_operand_value_t src, u8 size);
scc_x86_operand_value_t scc_x86_lir_val_to_mir_op(scc_x86_64_isel_t *isel,
                                                  const scc_lir_val_t *val);
static inline void emit_direct_call(scc_x86_64_isel_t *isel,
                                    const char *callee) {
    (void)callee;
    scc_mir_x86_instr_t instr = {0};
    scc_mir_x86_instr_1(&instr, SCC_X86_IFORM_CALL_NEAR_RELBRZ,
                        scc_x86_op_relbr(0), scc_pos_create());
    scc_vec_push(isel->instrs, instr);
}

static inline void emit_indirect_call(scc_x86_64_isel_t *isel,
                                      scc_x86_operand_value_t reg) {
    scc_mir_x86_instr_t instr = {0};
    scc_mir_x86_instr_1(&instr, SCC_X86_IFORM_CALL_NEAR_GPRV, reg,
                        scc_pos_create());
}

static inline void emit_ret(scc_x86_64_isel_t *isel) {
    scc_mir_x86_instr_t instr = {0};
    scc_mir_x86_instr_0(&instr, SCC_X86_IFORM_RET_NEAR, scc_pos_create());
    scc_vec_push(isel->instrs, instr);
}

#define add_instr_0(isel, iform)                                               \
    do {                                                                       \
        scc_mir_x86_instr_t instr;                                             \
        scc_mir_x86_instr_0(&instr, (iform), (isel)->pos);                     \
        scc_vec_push((isel)->instrs, instr);                                   \
    } while (0)

#define add_instr_1(isel, iform, arg1)                                         \
    do {                                                                       \
        scc_mir_x86_instr_t instr;                                             \
        scc_mir_x86_instr_1(&instr, (iform), (arg1), (isel)->pos);             \
        scc_vec_push((isel)->instrs, instr);                                   \
    } while (0)

#define add_instr_2(isel, iform, arg1, arg2)                                   \
    do {                                                                       \
        scc_mir_x86_instr_t instr;                                             \
        scc_mir_x86_instr_2(&instr, (iform), (arg1), (arg2), (isel)->pos);     \
        scc_vec_push((isel)->instrs, instr);                                   \
    } while (0)

#endif /* __SCC_X86_ISEL_H__ */