cpu/sh4/fpu.c

41 void save_fpu(struct task_struct *tsk)
84 		      :"0"((char *)(&tsk->thread.xstate->hardfpu.status)),
91 void restore_fpu(struct task_struct *tsk)
134 		      :"0" (tsk->thread.xstate), "r" (FPSCR_RCHG)
228 		struct task_struct *tsk = current;
230 		if ((tsk->thread.xstate->hardfpu.fpscr & FPSCR_CAUSE_ERROR))
232 			denormal_to_double(&tsk->thread.xstate->hardfpu,
241 		struct task_struct *tsk = current;
248 		hx = tsk->thread.xstate->hardfpu.fp_regs[n];
249 		hy = tsk->thread.xstate->hardfpu.fp_regs[m];
250 		fpscr = tsk->thread.xstate->hardfpu.fpscr;
260 			    | tsk->thread.xstate->hardfpu.fp_regs[n + 1];
262 			    | tsk->thread.xstate->hardfpu.fp_regs[m + 1];
264 			tsk->thread.xstate->hardfpu.fp_regs[n] = llx >> 32;
265 			tsk->thread.xstate->hardfpu.fp_regs[n + 1] = llx & 0xffffffff;
271 			tsk->thread.xstate->hardfpu.fp_regs[n] = hx;
279 		struct task_struct *tsk = current;
286 		hx = tsk->thread.xstate->hardfpu.fp_regs[n];
287 		hy = tsk->thread.xstate->hardfpu.fp_regs[m];
288 		fpscr = tsk->thread.xstate->hardfpu.fpscr;
298 			    | tsk->thread.xstate->hardfpu.fp_regs[n + 1];
300 			    | tsk->thread.xstate->hardfpu.fp_regs[m + 1];
305 			tsk->thread.xstate->hardfpu.fp_regs[n] = llx >> 32;
306 			tsk->thread.xstate->hardfpu.fp_regs[n + 1] = llx & 0xffffffff;
315 			tsk->thread.xstate->hardfpu.fp_regs[n] = hx;
323 		struct task_struct *tsk = current;
330 		hx = tsk->thread.xstate->hardfpu.fp_regs[n];
331 		hy = tsk->thread.xstate->hardfpu.fp_regs[m];
332 		fpscr = tsk->thread.xstate->hardfpu.fpscr;
342 			    | tsk->thread.xstate->hardfpu.fp_regs[n + 1];
344 			    | tsk->thread.xstate->hardfpu.fp_regs[m + 1];
348 			tsk->thread.xstate->hardfpu.fp_regs[n] = llx >> 32;
349 			tsk->thread.xstate->hardfpu.fp_regs[n + 1] = llx & 0xffffffff;
355 			tsk->thread.xstate->hardfpu.fp_regs[n] = hx;
363 		struct task_struct *tsk = current;
368 		hx = tsk->thread.xstate->hardfpu.fp_regs[m];
370 		if ((tsk->thread.xstate->hardfpu.fpscr & FPSCR_CAUSE_ERROR)
375 			llx = ((long long)tsk->thread.xstate->hardfpu.fp_regs[m] << 32)
376 			    | tsk->thread.xstate->hardfpu.fp_regs[m + 1];
378 			tsk->thread.xstate->hardfpu.fpul = float64_to_float32(llx);
396 	struct task_struct *tsk = current;
397 	int roundingMode = FPSCR_ROUNDING_MODE(tsk->thread.xstate->hardfpu.fpscr);
403 	struct task_struct *tsk = current;
406 	__unlazy_fpu(tsk, regs);
409 		tsk->thread.xstate->hardfpu.fpscr &=
411 		tsk->thread.xstate->hardfpu.fpscr |= fpu_exception_flags;
414 		tsk->thread.xstate->hardfpu.fpscr |= (fpu_exception_flags >> 10);
416 		restore_fpu(tsk);
417 		task_thread_info(tsk)->status |= TS_USEDFPU;
418 		if ((((tsk->thread.xstate->hardfpu.fpscr & FPSCR_ENABLE_MASK) >> 7) &