SH7751 Datasheet, PDF (60/1224 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

5.5.4 Return from Exception Handling......................................................................... 146
5.6 Description of Exceptions................................................................................................. 146
5.6.1 Resets................................................................................................................... 147
5.6.2 General Exceptions .............................................................................................. 152
5.6.3 Interrupts.............................................................................................................. 166
5.6.4 Priority Order with Multiple Exceptions.............................................................. 169
5.7 Usage Notes ...................................................................................................................... 170
5.8 Restrictions ....................................................................................................................... 171
Section 6 Floating-Point Unit .......................................................................................... 173
6.1 Overview........................................................................................................................... 173
6.2 Data Formats..................................................................................................................... 173
6.2.1 Floating-Point Format.......................................................................................... 173
6.2.2 Non-Numbers (NaN) ........................................................................................... 175
6.2.3 Denormalized Numbers ....................................................................................... 176
6.3 Registers............................................................................................................................ 177
6.3.1 Floating-Point Registers....................................................................................... 177
6.3.2 Floating-Point Status/Control Register (FPSCR)................................................. 179
6.3.3 Floating-Point Communication Register (FPUL) ................................................ 180
6.4 Rounding........................................................................................................................... 181
6.5 Floating-Point Exceptions................................................................................................. 181
6.6 Graphics Support Functions.............................................................................................. 183
6.6.1 Geometric Operation Instructions........................................................................ 183
6.6.2 Pair Single-Precision Data Transfer..................................................................... 184
6.7 Usage Notes ...................................................................................................................... 185
6.7.1 Rounding Mode and Underflow Flag .................................................................. 185
6.7.2 Setting of Overflow Flag by FIPR or FTRV Instruction ..................................... 186
6.7.3 Sign of Operation Result when Using FIPR or FTRV Instruction....................... 187
6.7.4 Notes on Double-Precision FADD and FSUB Instructions ................................. 187
Section 7 Instruction Set.................................................................................................... 189
7.1 Execution Environment..................................................................................................... 189
7.2 Addressing Modes ............................................................................................................ 191
7.3 Instruction Set ................................................................................................................... 195
7.4 Usage Notes ...................................................................................................................... 207
7.4.1 Notes on TRAPA Instruction, SLEEP Instruction, and Undefined Instruction
(H'FFFD).............................................................................................................. 207
Rev.4.00 Oct. 10, 2008 Page lx of xcviii
REJ09B0370-0400