300 Register reg() { return _r; }
301 };
302
303 class Pre : public PrePost {
304 public:
305 Pre(Register reg, int o) : PrePost(reg, o) { }
306 };
307 class Post : public PrePost {
308 Register _idx;
309 public:
310 Post(Register reg, int o) : PrePost(reg, o) { _idx = NULL; }
311 Post(Register reg, Register idx) : PrePost(reg, 0) { _idx = idx; }
312 Register idx_reg() { return _idx; }
313 };
314
315 namespace ext
316 {
317 enum operation { uxtb, uxth, uxtw, uxtx, sxtb, sxth, sxtw, sxtx };
318 };
319
320 // abs methods which cannot overflow and so are well-defined across
321 // the entire domain of integer types.
322 static inline unsigned int uabs(unsigned int n) {
323 union {
324 unsigned int result;
325 int value;
326 };
327 result = n;
328 if (value < 0) result = -result;
329 return result;
330 }
331 static inline unsigned long uabs(unsigned long n) {
332 union {
333 unsigned long result;
334 long value;
335 };
336 result = n;
337 if (value < 0) result = -result;
338 return result;
339 }
340 static inline unsigned long uabs(long n) { return uabs((unsigned long)n); }
341 static inline unsigned long uabs(int n) { return uabs((unsigned int)n); }
342
343 // Addressing modes
344 class Address {
345 public:
346
347 enum mode { no_mode, base_plus_offset, pre, post, post_reg, pcrel,
348 base_plus_offset_reg, literal };
349
350 // Shift and extend for base reg + reg offset addressing
351 class extend {
352 int _option, _shift;
353 ext::operation _op;
354 public:
355 extend() { }
356 extend(int s, int o, ext::operation op) : _option(o), _shift(s), _op(op) { }
357 int option() const{ return _option; }
358 int shift() const { return _shift; }
359 ext::operation op() const { return _op; }
360 };
361 class uxtw : public extend {
362 public:
|
300 Register reg() { return _r; }
301 };
302
303 class Pre : public PrePost {
304 public:
305 Pre(Register reg, int o) : PrePost(reg, o) { }
306 };
307 class Post : public PrePost {
308 Register _idx;
309 public:
310 Post(Register reg, int o) : PrePost(reg, o) { _idx = NULL; }
311 Post(Register reg, Register idx) : PrePost(reg, 0) { _idx = idx; }
312 Register idx_reg() { return _idx; }
313 };
314
315 namespace ext
316 {
317 enum operation { uxtb, uxth, uxtw, uxtx, sxtb, sxth, sxtw, sxtx };
318 };
319
320 // Addressing modes
321 class Address {
322 public:
323
324 enum mode { no_mode, base_plus_offset, pre, post, post_reg, pcrel,
325 base_plus_offset_reg, literal };
326
327 // Shift and extend for base reg + reg offset addressing
328 class extend {
329 int _option, _shift;
330 ext::operation _op;
331 public:
332 extend() { }
333 extend(int s, int o, ext::operation op) : _option(o), _shift(s), _op(op) { }
334 int option() const{ return _option; }
335 int shift() const { return _shift; }
336 ext::operation op() const { return _op; }
337 };
338 class uxtw : public extend {
339 public:
|