UM_S3C2501X Datasheet, PDF (6/465 Pages) Samsung semiconductor – 32-BIT RISC MICROPROCESSOR

Table of Contents (Continued)
Chapter 3
Instruction Set (Continued)
3.16 Coprocessor Register Transfers (MRC, MCR) ................................................................................. 3-56
3.16.1 The Coprocessor Fields ....................................................................................................... 3-56
3.16.2 Transfers to R15 .................................................................................................................. 3-57
3.16.3 Transfers from R15.............................................................................................................. 3-57
3.16.4 Instruction Cycle Times........................................................................................................ 3-57
3.16.5 Assembler Syntax................................................................................................................ 3-57
3.17 Undefined Instruction ...................................................................................................................... 3-58
3.17.1 Instruction Cycle Times........................................................................................................ 3-58
3.17.2 Assembler Syntax................................................................................................................ 3-58
3.18 Instruction Set Examples................................................................................................................. 3-59
3.18.1 Using The Conditional Instructions ....................................................................................... 3-59
3.18.2 Pseudo-Random Binary Sequence Generator...................................................................... 3-61
3.18.3 Multiplication by Constant Using The Barrel Shifter.............................................................. 3-61
3.18.4 Loading a Word From an Unknown Alignment ..................................................................... 3-63
3.19 Thumb Instruction Set Format......................................................................................................... 3-64
3.19.1 Format Summary................................................................................................................. 3-64
3.19.2 Opcode Summary................................................................................................................ 3-65
3.20 Format 1: Move Shifted Register..................................................................................................... 3-67
3.20.1 Operation............................................................................................................................. 3-67
3.20.2 Instruction Cycle Times........................................................................................................ 3-67
3.21 Format 2: Add/Subtract ................................................................................................................... 3-68
3.21.1 Operation............................................................................................................................. 3-68
3.21.2 Instruction Cycle Times........................................................................................................ 3-69
3.22 Format 3: Move/Compare/Add/Subtract Immediate......................................................................... 3-70
3.22.1 Operations ........................................................................................................................... 3-70
3.22.2 Instruction Cycle Times........................................................................................................ 3-70
3.23 Format 4: ALU Operations .............................................................................................................. 3-71
3.23.1 Operation............................................................................................................................. 3-71
3.23.2 Instruction Cycle Times........................................................................................................ 3-72
3.24 Format 5: Hi-Register Operations/Branch Exchange ....................................................................... 3-73
3.24.1 Operation............................................................................................................................. 3-73
3.24.2 Instruction Cycle Times........................................................................................................ 3-74
3.24.3 The Bx Instruction................................................................................................................ 3-74
3.24.4 Using R15 as an Operand .................................................................................................... 3-75
3.25 Format 6: PC-Relative Load............................................................................................................ 3-76
3.25.1 Operation............................................................................................................................. 3-76
3.25.2 Instruction Cycle Times........................................................................................................ 3-76
3.26 Format 7: Load/Store With Register Offset...................................................................................... 3-77
3.26.1 Operation............................................................................................................................. 3-77
3.26.2 Instruction Cycle Times........................................................................................................ 3-78
3.27 Format 8: Load/Store Sign-Extended Byte/Half-Word ..................................................................... 3-79
3.27.1 Operation............................................................................................................................. 3-79
3.27.2 Instruction Cycle Times........................................................................................................ 3-80
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S3C2501X