FR-V Built-in Functions (Using the GNU Compiler Collection (GCC)) (original) (raw)

7.13.12 FR-V Built-in Functions ¶

GCC provides many FR-V-specific built-in functions. In general, these functions are intended to be compatible with those described by FR-V Family, Softune C/C++ Compiler Manual (V6), Fujitsu Semiconductor. The two exceptions are __MDUNPACKH and__MBTOHE, the GCC forms of which pass 128-bit values by pointer rather than by value.

Most of the functions are named after specific FR-V instructions. Such functions are said to be “directly mapped” and are summarized here in tabular form.

• Argument Types
• Directly-Mapped Integer Functions
• Directly-Mapped Media Functions
• Raw Read/Write Functions
• Other Built-in Functions