39. Z8000 Dependent Features....................................................................................................... 221
39.1. Options......................................................................................................................... 221
39.2. Syntax .......................................................................................................................... 221
39.2.1. Special Characters......................................................................................... 221
39.2.2. Register Names ............................................................................................. 221
39.2.3. Addressing Modes ........................................................................................ 221
39.3. Assembler Directives for the Z8000 ............................................................................ 222
39.4. Opcodes........................................................................................................................ 223
40. VAX Dependent Features ......................................................................................................... 225
40.1. VAX Command Line Options ..................................................................................... 225
40.2. VAX Floating Point...................................................................................................... 226
40.3. Vax Machine Directives ............................................................................................... 226
40.4. VAX Opcodes .............................................................................................................. 227
40.5. VAX Branch Improvement .......................................................................................... 227
40.6. VAX Operands ............................................................................................................. 229
40.7. Not Supported on VAX ................................................................................................ 229
41. v850 Dependent Features ......................................................................................................... 231
41.1. Options......................................................................................................................... 231
41.2. Syntax .......................................................................................................................... 231
41.2.1. Special Characters......................................................................................... 232
41.2.2. Register Names ............................................................................................. 232
41.3. Floating Point............................................................................................................... 234
41.4. V850 Machine Directives ............................................................................................ 234
41.5. Opcodes........................................................................................................................ 235
42. Xtensa Dependent Features...................................................................................................... 239
42.1. Command Line Options............................................................................................... 239
42.2. Assembler Syntax ........................................................................................................ 239
42.2.1. Opcode Names .............................................................................................. 240
42.2.2. Register Names ............................................................................................. 240
42.3. Xtensa Optimizations................................................................................................... 240
42.3.1. Using Density Instructions............................................................................ 240
42.3.2. Automatic Instruction Alignment ................................................................. 241
42.4. Xtensa Relaxation ........................................................................................................ 241
42.4.1. Conditional Branch Relaxation..................................................................... 241
42.4.2. Function Call Relaxation .............................................................................. 242
42.4.3. Other Immediate Field Relaxation................................................................ 242
42.5. Directives ..................................................................................................................... 243
42.5.1. density ........................................................................................................... 244
42.5.2. relax............................................................................................................... 244
42.5.3. longcalls ........................................................................................................ 245
42.5.4. generics ......................................................................................................... 245
42.5.5. literal ............................................................................................................. 245
42.5.6. literal_position .............................................................................................. 246
42.5.7. literal_prefix.................................................................................................. 246
42.5.8. freeregs.......................................................................................................... 246
42.5.9. frame ............................................................................................................. 247
43. Reporting Bugs.......................................................................................................................... 249
43.1. Have You Found a Bug? .............................................................................................. 249
43.2. How to Report Bugs..................................................................................................... 249
44. Acknowledgements ................................................................................................................... 253
A. GNU Free Documentation License ........................................................................................... 255
A.1. ADDENDUM: How to use this License for your documents....................................... 259






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