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/// @file xed-decoded-inst-api.h
///

#if !defined(_XED_DECODED_INST_API_H_)
# define _XED_DECODED_INST_API_H_

#include "xed-decoded-inst.h"
#include "xed-operand-accessors.h"
#include "xed-state.h"
#include "xed-operand-values-interface.h"
#include "xed-print-info.h"

///////////////////////////////////////////////////////
/// API
///////////////////////////////////////////////////////

/// @name xed_decoded_inst_t High-level accessors
//@{
/// @ingroup DEC
/// Return true if the instruction is valid
static XED_INLINE xed_bool_t
xed_decoded_inst_valid(const xed_decoded_inst_t* p)
{
    return XED_STATIC_CAST(xed_bool_t, (p->_inst != 0));
}
/// @ingroup DEC
/// Return the #xed_inst_t structure for this instruction. This is the
/// route to the basic operands form information.
static XED_INLINE const xed_inst_t*
xed_decoded_inst_inst(const xed_decoded_inst_t* p)
{
    return p->_inst;
}


/// @ingroup DEC
/// Return the instruction #xed_category_enum_t enumeration
static XED_INLINE xed_category_enum_t
xed_decoded_inst_get_category(const xed_decoded_inst_t* p)
{
    xed_assert(p->_inst != 0);
    return xed_inst_category(p->_inst);
}
/// @ingroup DEC
/// Return the instruction #xed_extension_enum_t enumeration
static XED_INLINE xed_extension_enum_t
xed_decoded_inst_get_extension(const xed_decoded_inst_t* p)
{
    xed_assert(p->_inst != 0);
    return xed_inst_extension(p->_inst);
}
/// @ingroup DEC
/// Return the instruction #xed_isa_set_enum_t enumeration
static XED_INLINE xed_isa_set_enum_t
xed_decoded_inst_get_isa_set(xed_decoded_inst_t const* const p)
{
    xed_assert(p->_inst != 0);
    return xed_inst_isa_set(p->_inst);
}
/// @ingroup DEC
/// Return the instruction #xed_iclass_enum_t enumeration.
static XED_INLINE xed_iclass_enum_t
xed_decoded_inst_get_iclass(const xed_decoded_inst_t* p)
{
    xed_assert(p->_inst != 0);
    return xed_inst_iclass(p->_inst);
}

/// @name xed_decoded_inst_t Attirbutes and properties
//@{
/// @ingroup DEC
/// Returns 1 if the attribute is defined for this instruction.
XED_DLL_EXPORT xed_uint32_t
xed_decoded_inst_get_attribute(const xed_decoded_inst_t* p,
                               xed_attribute_enum_t attr);

/// @ingroup DEC
/// Returns the attribute bitvector
XED_DLL_EXPORT xed_attributes_t
xed_decoded_inst_get_attributes(const xed_decoded_inst_t* p);
//@}

/// @ingroup DEC
/// Returns 1 if the instruction is xacquire.
XED_DLL_EXPORT xed_uint32_t
xed_decoded_inst_is_xacquire(const xed_decoded_inst_t* p);

/// @ingroup DEC
/// Returns 1 if the instruction is xrelease.
XED_DLL_EXPORT xed_uint32_t
xed_decoded_inst_is_xrelease(const xed_decoded_inst_t* p);

/// @ingroup DEC
/// Returns 1 if the instruction has mpx prefix.
XED_DLL_EXPORT xed_uint32_t
xed_decoded_inst_has_mpx_prefix(const xed_decoded_inst_t* p);

/// @ingroup DEC
/// Returns the modrm byte
XED_DLL_EXPORT xed_uint8_t
xed_decoded_inst_get_modrm(const xed_decoded_inst_t* p);

/// @ingroup DEC
/// Returns 1 iff the instruction uses destination-masking.  This is 0 for
/// blend operations that use their mask field as a control.
XED_DLL_EXPORT xed_bool_t
xed_decoded_inst_masked_vector_operation(xed_decoded_inst_t* p);

/// @ingroup DEC
/// Returns 128, 256 or 512 for operations in the VEX, EVEX (or XOP)
/// encoding space and returns 0 for (most) nonvector operations.
/// This usually the content of the VEX.L or EVEX.LL field, reinterpreted.
/// Some GPR instructions (like the BMI1/BMI2) are encoded in the VEX space
/// and return non-zero values from this API.
XED_DLL_EXPORT xed_uint_t
xed_decoded_inst_vector_length_bits(xed_decoded_inst_t const* const p);

/// @ingroup DEC
/// Returns the number of legacy prefixes.
XED_DLL_EXPORT xed_uint_t
xed_decoded_inst_get_nprefixes(xed_decoded_inst_t* p);

//@}


/// @name xed_decoded_inst_t Operands
//@{
/// @ingroup DEC
/// Obtain a constant pointer to the operands
static XED_INLINE const xed_operand_values_t*
xed_decoded_inst_operands_const(const xed_decoded_inst_t* p)
{
    return p;
}
/// @ingroup DEC
/// Obtain a non-constant pointer to the operands
static XED_INLINE xed_operand_values_t*
xed_decoded_inst_operands(xed_decoded_inst_t* p)
{
    return p;
}

/// Return the length in bits of the operand_index'th operand.
/// @ingroup DEC
XED_DLL_EXPORT unsigned int
xed_decoded_inst_operand_length_bits(const xed_decoded_inst_t* p,
                                     unsigned int operand_index);


/// Deprecated -- returns the length in bytes of the operand_index'th
/// operand.  Use #xed_decoded_inst_operand_length_bits() instead.
/// @ingroup DEC
XED_DLL_EXPORT unsigned int
xed_decoded_inst_operand_length(const xed_decoded_inst_t* p,
                                unsigned int operand_index);


/// Return the number of operands
/// @ingroup DEC
static XED_INLINE unsigned int
xed_decoded_inst_noperands(const xed_decoded_inst_t* p)
{
    unsigned int noperands = xed_inst_noperands(xed_decoded_inst_inst(p));
    return noperands;
}


/// Return the number of element in the operand (for SSE and AVX operands)
/// @ingroup DEC
XED_DLL_EXPORT unsigned int
xed_decoded_inst_operand_elements(const xed_decoded_inst_t* p,
                                  unsigned int operand_index);

/// Return the size of an element in bits  (for SSE and AVX operands)
/// @ingroup DEC
XED_DLL_EXPORT unsigned int
xed_decoded_inst_operand_element_size_bits(const xed_decoded_inst_t* p,
        unsigned int operand_index);

/// Return the type of an element of type #xed_operand_element_type_enum_t
/// (for SSE and AVX operands)
/// @ingroup DEC
XED_DLL_EXPORT xed_operand_element_type_enum_t
xed_decoded_inst_operand_element_type(const xed_decoded_inst_t* p,
                                      unsigned int operand_index);

/// Interpret the operand action in light of AVX512 masking and
/// zeroing/merging.  If masking and merging are used together, the dest
/// operand may also be read.  If masking and merging are used together,
/// the elemnents of dest operand register may be conditionally written (so
/// that input values live on in the output register).
/// @ingroup DEC
XED_DLL_EXPORT xed_operand_action_enum_t
xed_decoded_inst_operand_action(const xed_decoded_inst_t* p,
                                unsigned int operand_index);

//@}

/// @name xed_decoded_inst_t AVX512 Masking
//@{
/// Returns true if the instruction uses write-masking
/// @ingroup DEC
XED_DLL_EXPORT xed_bool_t
xed_decoded_inst_masking(const xed_decoded_inst_t* p);

/// Returns true if the instruction uses write-masking with merging
/// @ingroup DEC
XED_DLL_EXPORT xed_bool_t
xed_decoded_inst_merging(const xed_decoded_inst_t* p);

/// Returns true if the instruction uses write-masking with zeroing
/// @ingroup DEC
XED_DLL_EXPORT xed_bool_t
xed_decoded_inst_zeroing(const xed_decoded_inst_t* p);
//@}

/// @name xed_decoded_inst_t Initialization
//@{
/// @ingroup DEC
/// Zero the decode structure, but set the machine state/mode
/// information. Re-initializes all operands.
XED_DLL_EXPORT void
xed_decoded_inst_zero_set_mode(xed_decoded_inst_t* p,
                               const xed_state_t* dstate);

/// @ingroup DEC
/// Zero the decode structure, but preserve the existing machine state/mode
/// information. Re-initializes all operands.
XED_DLL_EXPORT void  xed_decoded_inst_zero_keep_mode(xed_decoded_inst_t* p);


/// @ingroup DEC
/// Zero the decode structure completely. Re-initializes all operands.
XED_DLL_EXPORT void  xed_decoded_inst_zero(xed_decoded_inst_t* p);

/// @ingroup DEC
/// Set the machine mode and stack addressing width directly. This is NOT a
/// full initialization; Call #xed_decoded_inst_zero() before using this if
/// you want a clean slate.
static XED_INLINE void
xed_decoded_inst_set_mode(xed_decoded_inst_t* p,
                          xed_machine_mode_enum_t mmode,
                          xed_address_width_enum_t stack_addr_width)
{
    xed_state_t dstate;
    dstate.mmode = mmode;
    dstate.stack_addr_width = stack_addr_width;
    xed_operand_values_set_mode(p, &dstate);
}



/// @ingroup DEC
/// Zero the decode structure, but copy the existing machine state/mode
/// information from the supplied operands pointer. Same as
/// #xed_decoded_inst_zero_keep_mode.
XED_DLL_EXPORT void
xed_decoded_inst_zero_keep_mode_from_operands(
    xed_decoded_inst_t* p,
    const xed_operand_values_t* operands);

/// @name xed_decoded_inst_t Length
//@{
/// @ingroup DEC
/// Return the length of the decoded  instruction in bytes.
static XED_INLINE xed_uint_t
xed_decoded_inst_get_length(const xed_decoded_inst_t* p)
{
    return p->_decoded_length;
}

//@}


/// @name xed_decoded_inst_t get Byte
//@{
/// @ingroup DEC
/// Read itext byte.
static XED_INLINE xed_uint8_t
xed_decoded_inst_get_byte(const xed_decoded_inst_t* p, xed_uint_t byte_index)
{
    /// Read a whole byte from the normal input bytes.
    xed_uint8_t out = p->_byte_array._dec[byte_index];
    return out;
}

//@}

/// @name Modes
//@{
/// @ingroup DEC
/// Returns 16/32/64 indicating the machine mode with in bits. This is
/// derived from the input mode information.
static XED_INLINE xed_uint_t
xed_decoded_inst_get_machine_mode_bits(const xed_decoded_inst_t* p)
{
    xed_uint8_t mode = xed3_operand_get_mode(p);
    if(mode == 2) return 64;
    if(mode == 1) return 32;
    return 16;
}
/// @ingroup DEC
/// Returns 16/32/64 indicating the stack addressing mode with in
/// bits. This is derived from the input mode information.
static XED_INLINE xed_uint_t
xed_decoded_inst_get_stack_address_mode_bits(const xed_decoded_inst_t* p)
{
    xed_uint8_t smode = xed3_operand_get_smode(p);
    if(smode == 2) return 64;
    if(smode == 1) return 32;
    return 16;
}

/// Returns the operand width in bits: 8/16/32/64. This is different than
/// the #xed_operand_values_get_effective_operand_width() which only
/// returns 16/32/64. This factors in the BYTEOP attribute when computing
/// its return value. This is a convenience function.
/// @ingroup DEC
XED_DLL_EXPORT xed_uint32_t
xed_decoded_inst_get_operand_width(const xed_decoded_inst_t* p);

/// Return the user-specified #xed_chip_enum_t chip name, or
/// XED_CHIP_INVALID if not set.
/// @ingroup DEC
static XED_INLINE xed_chip_enum_t
xed_decoded_inst_get_input_chip(const xed_decoded_inst_t* p)
{
    return xed3_operand_get_chip(p);
}

/// Set a user-specified #xed_chip_enum_t chip name for restricting decode
/// @ingroup DEC
static XED_INLINE void
xed_decoded_inst_set_input_chip(xed_decoded_inst_t* p,
                                xed_chip_enum_t chip)
{
    xed3_operand_set_chip(p, chip);
}


/// Indicate if this decoded instruction is valid for the specified
/// #xed_chip_enum_t chip
/// @ingroup DEC
XED_DLL_EXPORT xed_bool_t
xed_decoded_inst_valid_for_chip(xed_decoded_inst_t const* const p,
                                xed_chip_enum_t chip);

//@}




/// @name IFORM handling
//@{

/// @ingroup DEC
/// Return the instruction iform enum of type #xed_iform_enum_t .
static XED_INLINE xed_iform_enum_t
xed_decoded_inst_get_iform_enum(const xed_decoded_inst_t* p)
{
    xed_assert(p->_inst != 0);
    return xed_inst_iform_enum(p->_inst);
}

/// @ingroup DEC
/// Return the instruction zero-based iform number based on masking the
/// corresponding #xed_iform_enum_t. This value is suitable for
/// dispatching. The maximum value for a particular iclass is provided by
/// #xed_iform_max_per_iclass() .
static XED_INLINE unsigned int
xed_decoded_inst_get_iform_enum_dispatch(const xed_decoded_inst_t* p)
{
    xed_assert(p->_inst != 0);
    return xed_inst_iform_enum(p->_inst) -
           xed_iform_first_per_iclass(xed_inst_iclass(p->_inst));
}
//@}




/// @name xed_decoded_inst_t Printers
//@{
/// @ingroup PRINT
/// Print out all the information about the decoded instruction to the
/// buffer buf whose length is maximally buflen. This is for debugging.
XED_DLL_EXPORT void
xed_decoded_inst_dump(const xed_decoded_inst_t* p, char* buf,  int buflen);



/// @ingroup PRINT
/// Print the instruction information in a verbose format.
/// This is for debugging.
/// @param p a #xed_decoded_inst_t for a decoded instruction
/// @param buf a buffer to write the disassembly in to.
/// @param buflen maximum length of the disassembly buffer
/// @param runtime_address the address of the instruction being disassembled. If zero, the offset is printed for relative branches. If nonzero, XED attempts to print the target address for relative branches.
/// @return Returns 0 if the disassembly fails, 1 otherwise.
XED_DLL_EXPORT xed_bool_t
xed_decoded_inst_dump_xed_format(const xed_decoded_inst_t* p,
                                 char* buf,
                                 int buflen,
                                 xed_uint64_t runtime_address) ;


/// Disassemble the decoded instruction using the specified syntax.
/// The output buffer must be at least 25 bytes long. Returns true if
/// disassembly proceeded without errors.
/// @param syntax a #xed_syntax_enum_t the specifies the disassembly format
/// @param xedd a #xed_decoded_inst_t for a decoded instruction
/// @param out_buffer a buffer to write the disassembly in to.
/// @param buffer_len maximum length of the disassembly buffer
/// @param runtime_instruction_address the address of the instruction being disassembled. If zero, the offset is printed for relative branches. If nonzero, XED attempts to print the target address for relative branches.
/// @param context A void* used only for the call back routine for symbolic disassembly if one is provided. Can be zero.
/// @param symbolic_callback A function pointer for obtaining symbolic disassembly. Can be zero.
/// @return Returns 0 if the disassembly fails, 1 otherwise.
///@ingroup PRINT
XED_DLL_EXPORT xed_bool_t
xed_format_context(xed_syntax_enum_t syntax,
                   const xed_decoded_inst_t* xedd,
                   char* out_buffer,
                   int  buffer_len,
                   xed_uint64_t runtime_instruction_address,
                   void* context,
                   xed_disassembly_callback_fn_t symbolic_callback);


/// @ingroup PRINT
/// Disassemble the instruction information to a buffer. See the
/// #xed_print_info_t for the required public fields of the argument.
/// This is the preferred method of doing disassembly.
/// The output buffer must be at least 25 bytes long.
/// @param pi a #xed_print_info_t
/// @return Returns 0 if the disassembly fails, 1 otherwise.
XED_DLL_EXPORT xed_bool_t
xed_format_generic(xed_print_info_t* pi);

//@}

/// @name xed_decoded_inst_t Operand Field Details
//@{
/// @ingroup DEC
XED_DLL_EXPORT xed_reg_enum_t
xed_decoded_inst_get_seg_reg(const xed_decoded_inst_t* p,
                             unsigned int mem_idx);
/// @ingroup DEC
XED_DLL_EXPORT xed_reg_enum_t
xed_decoded_inst_get_base_reg(const xed_decoded_inst_t* p,
                              unsigned int mem_idx);
XED_DLL_EXPORT xed_reg_enum_t
xed_decoded_inst_get_index_reg(const xed_decoded_inst_t* p,
                               unsigned int mem_idx);
/// @ingroup DEC
XED_DLL_EXPORT xed_uint_t
xed_decoded_inst_get_scale(const xed_decoded_inst_t* p,
                           unsigned int mem_idx);
/// @ingroup DEC
XED_DLL_EXPORT xed_int64_t
xed_decoded_inst_get_memory_displacement(const xed_decoded_inst_t* p,
        unsigned int mem_idx);
/// @ingroup DEC
/// Result in BYTES
XED_DLL_EXPORT xed_uint_t
xed_decoded_inst_get_memory_displacement_width(const xed_decoded_inst_t* p,
        unsigned int mem_idx);
/// @ingroup DEC
/// Result in BITS
XED_DLL_EXPORT xed_uint_t
xed_decoded_inst_get_memory_displacement_width_bits(const xed_decoded_inst_t* p,
        unsigned int mem_idx);
/// @ingroup DEC
XED_DLL_EXPORT xed_int32_t
xed_decoded_inst_get_branch_displacement(const xed_decoded_inst_t* p);
/// @ingroup DEC
/// Result in BYTES
XED_DLL_EXPORT xed_uint_t
xed_decoded_inst_get_branch_displacement_width(const xed_decoded_inst_t* p);
/// @ingroup DEC
/// Result in BITS
XED_DLL_EXPORT xed_uint_t
xed_decoded_inst_get_branch_displacement_width_bits(
    const xed_decoded_inst_t* p);
/// @ingroup DEC
XED_DLL_EXPORT xed_uint64_t
xed_decoded_inst_get_unsigned_immediate(const xed_decoded_inst_t* p);
/// @ingroup DEC
/// Return true if the first immediate (IMM0)  is signed
XED_DLL_EXPORT xed_uint_t
xed_decoded_inst_get_immediate_is_signed(const xed_decoded_inst_t* p);
/// @ingroup DEC
/// Return the immediate width in BYTES.
XED_DLL_EXPORT xed_uint_t
xed_decoded_inst_get_immediate_width(const xed_decoded_inst_t* p);
/// @ingroup DEC
/// Return the immediate width in BITS.
XED_DLL_EXPORT xed_uint_t
xed_decoded_inst_get_immediate_width_bits(const xed_decoded_inst_t* p);
/// @ingroup DEC
XED_DLL_EXPORT xed_int32_t
xed_decoded_inst_get_signed_immediate(const xed_decoded_inst_t* p);
/// @ingroup DEC
/// Return the second immediate.
static XED_INLINE xed_uint8_t
xed_decoded_inst_get_second_immediate(const xed_decoded_inst_t* p)
{
    return xed3_operand_get_uimm1(p);
}

/// @ingroup DEC
/// Return the specified register operand. The specifier is of type
/// #xed_operand_enum_t .
XED_DLL_EXPORT xed_reg_enum_t
xed_decoded_inst_get_reg(const xed_decoded_inst_t* p,
                         xed_operand_enum_t reg_operand);


/// See the comment on xed_decoded_inst_uses_rflags(). This can return
/// 0 if the flags are really not used by this instruction.
/// @ingroup DEC
XED_DLL_EXPORT const xed_simple_flag_t*
xed_decoded_inst_get_rflags_info(const xed_decoded_inst_t* p);

/// This returns 1 if the flags are read or written. This will return 0
/// otherwise. This will return 0 if the flags are really not used by this
/// instruction. For some shifts/rotates, XED puts a flags operand in the
/// operand array before it knows if the flags are used because of
/// mode-dependent masking effects on the immediate.
/// @ingroup DEC
XED_DLL_EXPORT xed_bool_t
xed_decoded_inst_uses_rflags(const xed_decoded_inst_t* p);

/// @ingroup DEC
XED_DLL_EXPORT xed_uint_t
xed_decoded_inst_number_of_memory_operands(const xed_decoded_inst_t* p);
/// @ingroup DEC
XED_DLL_EXPORT xed_bool_t
xed_decoded_inst_mem_read(const xed_decoded_inst_t* p, unsigned int mem_idx);
/// @ingroup DEC
XED_DLL_EXPORT xed_bool_t
xed_decoded_inst_mem_written(const xed_decoded_inst_t* p, unsigned int mem_idx);
/// @ingroup DEC
XED_DLL_EXPORT xed_bool_t
xed_decoded_inst_mem_written_only(const xed_decoded_inst_t* p,
                                  unsigned int mem_idx);
/// @ingroup DEC
XED_DLL_EXPORT xed_bool_t
xed_decoded_inst_conditionally_writes_registers(const xed_decoded_inst_t* p);
/// returns bytes
/// @ingroup DEC
XED_DLL_EXPORT unsigned int
xed_decoded_inst_get_memory_operand_length(const xed_decoded_inst_t* p,
        unsigned int memop_idx);

/// Returns the addressing width in bits (16,32,64) for MEM0 (memop_idx==0)
/// or MEM1 (memop_idx==1). This factors in things like whether or not the
/// reference is an implicit stack push/pop reference, the machine mode and
// 67 prefixes if present.
/// @ingroup DEC
XED_DLL_EXPORT unsigned int
xed_decoded_inst_get_memop_address_width(const xed_decoded_inst_t* p,
        xed_uint_t memop_idx);



/// @ingroup DEC
/// Returns true if the instruction is a prefetch
XED_DLL_EXPORT xed_bool_t
xed_decoded_inst_is_prefetch(const xed_decoded_inst_t* p);
//@}


/// @name xed_decoded_inst_t Modification
//@{
// Modifying decoded instructions before re-encoding
/// @ingroup DEC
XED_DLL_EXPORT void
xed_decoded_inst_set_scale(xed_decoded_inst_t* p, xed_uint_t scale);
/// @ingroup DEC
/// Set the memory displacement using a BYTE length
XED_DLL_EXPORT void
xed_decoded_inst_set_memory_displacement(xed_decoded_inst_t* p,
        xed_int64_t disp,
        xed_uint_t length_bytes);
/// @ingroup DEC
/// Set the branch  displacement using a BYTE length
XED_DLL_EXPORT void
xed_decoded_inst_set_branch_displacement(xed_decoded_inst_t* p,
        xed_int32_t disp,
        xed_uint_t length_bytes);
/// @ingroup DEC
/// Set the signed immediate a BYTE length
XED_DLL_EXPORT void
xed_decoded_inst_set_immediate_signed(xed_decoded_inst_t* p,
                                      xed_int32_t x,
                                      xed_uint_t length_bytes);
/// @ingroup DEC
/// Set the unsigned immediate a BYTE length
XED_DLL_EXPORT void
xed_decoded_inst_set_immediate_unsigned(xed_decoded_inst_t* p,
                                        xed_uint64_t x,
                                        xed_uint_t length_bytes);


/// @ingroup DEC
/// Set the memory displacement a BITS length
XED_DLL_EXPORT void
xed_decoded_inst_set_memory_displacement_bits(xed_decoded_inst_t* p,
        xed_int64_t disp,
        xed_uint_t length_bits);
/// @ingroup DEC
/// Set the branch displacement a BITS length
XED_DLL_EXPORT void
xed_decoded_inst_set_branch_displacement_bits(xed_decoded_inst_t* p,
        xed_int32_t disp,
        xed_uint_t length_bits);
/// @ingroup DEC
/// Set the signed immediate a BITS length
XED_DLL_EXPORT void
xed_decoded_inst_set_immediate_signed_bits(xed_decoded_inst_t* p,
        xed_int32_t x,
        xed_uint_t length_bits);
/// @ingroup DEC
/// Set the unsigned immediate a BITS length
XED_DLL_EXPORT void
xed_decoded_inst_set_immediate_unsigned_bits(xed_decoded_inst_t* p,
        xed_uint64_t x,
        xed_uint_t length_bits);

//@}

/// @name xed_decoded_inst_t User Data Field
//@{
/// @ingroup DEC
/// Return a user data field for arbitrary use by the user after decoding.
static XED_INLINE  xed_uint64_t
xed_decoded_inst_get_user_data(xed_decoded_inst_t* p)
{
    return p->u.user_data;
}
/// @ingroup DEC
/// Modify the user data field.
static XED_INLINE  void
xed_decoded_inst_set_user_data(xed_decoded_inst_t* p,
                               xed_uint64_t new_value)
{
    p->u.user_data = new_value;
}




//@}
#endif

