src/arch/amdgpu/vega/gpu_types.hh

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#ifndef __ARCH_VEGA_GPU_TYPES_HH__
#define __ARCH_VEGA_GPU_TYPES_HH__

#include <cstdint>

namespace gem5
{

namespace VegaISA
{
    union InstFormat;

    /**
     * used to represnt a GPU inst in its raw format. VEGA
     * instructions may be 32b or 64b, therefore we represent
     * a raw inst with 64b to ensure that all of its inst data,
     * including potential immediate values, may be represented
     * in the worst case.
     */
    typedef uint64_t RawMachInst;

    /**
     * used to represent the encoding of a VEGA inst. each portion
     * of a VEGA inst must be 1 DWORD (32b), so we use a pointer
     * to InstFormat type (which is 32b). for the case in which we
     * need multiple DWORDS to represnt a single inst, this pointer
     * essentialy acts as an array of the DWORDs needed to represent
     * the entire inst encoding.
     */
    typedef InstFormat *MachInst;

} // namespace VegaISA
} // namespace gem5

#endif // __ARCH_VEGA_GPU_TYPES_HH__