90 #include <machine/pcb.h>
377  * Construct a PCB from a trapframe. This is called from kdb_trap() where
380  * on the PCB. The PCB doesn't have to be perfect, as long as it contains
384 makectx(struct trapframe *tf, struct pcb *pcb)  in makectx()  argument
387 	pcb->pcb_lr = tf->srr0;  in makectx()
388 	pcb->pcb_sp = tf->fixreg[1];  in makectx()
398 	struct pcb *pcb;  in grab_mcontext()  local
401 	pcb = td->td_pcb;  in grab_mcontext()
419 	if (pcb->pcb_flags & PCB_FPREGS) {  in grab_mcontext()
420 		if (pcb->pcb_flags & PCB_FPU) {  in grab_mcontext()
428 		memcpy(&mcp->mc_fpscr, &pcb->pcb_fpu.fpscr, sizeof(double));  in grab_mcontext()
430 			memcpy(&mcp->mc_fpreg[i], &pcb->pcb_fpu.fpr[i].fpr,  in grab_mcontext()
434 	if (pcb->pcb_flags & PCB_VSX) {  in grab_mcontext()
437 			    &pcb->pcb_fpu.fpr[i].vsr[2], sizeof(double));  in grab_mcontext()
444 	if (pcb->pcb_flags & PCB_VECREGS) {  in grab_mcontext()
445 		if (pcb->pcb_flags & PCB_VEC) {  in grab_mcontext()
453 		mcp->mc_vscr  = pcb->pcb_vec.vscr;  in grab_mcontext()
454 		mcp->mc_vrsave =  pcb->pcb_vec.vrsave;  in grab_mcontext()
455 		memcpy(mcp->mc_avec, pcb->pcb_vec.vr, sizeof(mcp->mc_avec));  in grab_mcontext()
481 	struct pcb *pcb;  in set_mcontext()  local
486 	pcb = td->td_pcb;  in set_mcontext()
532 	pcb->pcb_flags &= ~(PCB_FPU | PCB_VSX | PCB_VEC);  in set_mcontext()
536 		pcb->pcb_flags |= PCB_FPREGS;  in set_mcontext()
537 		memcpy(&pcb->pcb_fpu.fpscr, &mcp->mc_fpscr, sizeof(double));  in set_mcontext()
538 		bzero(pcb->pcb_fpu.fpr, sizeof(pcb->pcb_fpu.fpr));  in set_mcontext()
540 			memcpy(&pcb->pcb_fpu.fpr[i].fpr, &mcp->mc_fpreg[i],  in set_mcontext()
542 			memcpy(&pcb->pcb_fpu.fpr[i].vsr[2],  in set_mcontext()
549 		pcb->pcb_flags |= PCB_VECREGS;  in set_mcontext()
550 		pcb->pcb_vec.vscr = mcp->mc_vscr;  in set_mcontext()
551 		pcb->pcb_vec.vrsave = mcp->mc_vrsave;  in set_mcontext()
552 		memcpy(pcb->pcb_vec.vr, mcp->mc_avec, sizeof(mcp->mc_avec));  in set_mcontext()
586  * Ensure the PCB has been updated in preparation for copying a thread.
599 	struct pcb *pcb;  in cpu_update_pcb()  local
604 	pcb = td->td_pcb;  in cpu_update_pcb()
606 	pcb_flags = pcb->pcb_flags;  in cpu_update_pcb()
611 		pcb->pcb_fscr = mfspr(SPR_FSCR);  in cpu_update_pcb()
613 		if (pcb->pcb_fscr & FSCR_EBB) {  in cpu_update_pcb()
614 			pcb->pcb_ebb.ebbhr = mfspr(SPR_EBBHR);  in cpu_update_pcb()
615 			pcb->pcb_ebb.ebbrr = mfspr(SPR_EBBRR);  in cpu_update_pcb()
616 			pcb->pcb_ebb.bescr = mfspr(SPR_BESCR);  in cpu_update_pcb()
618 		if (pcb->pcb_fscr & FSCR_LM) {  in cpu_update_pcb()
619 			pcb->pcb_lm.lmrr = mfspr(SPR_LMRR);  in cpu_update_pcb()
620 			pcb->pcb_lm.lmser = mfspr(SPR_LMSER);  in cpu_update_pcb()
622 		if (pcb->pcb_fscr & FSCR_TAR)  in cpu_update_pcb()
623 			pcb->pcb_tar = mfspr(SPR_TAR);  in cpu_update_pcb()
631 		pcb->pcb_dscr = mfspr(SPR_DSCRP);  in cpu_update_pcb()
643 	pcb->pcb_vec.vscr = mfspr(SPR_SPEFSCR);  in cpu_update_pcb()
749 	struct pcb *pcb;  in fill_fpregs()  local
752 	pcb = td->td_pcb;  in fill_fpregs()
754 	if ((pcb->pcb_flags & PCB_FPREGS) == 0)  in fill_fpregs()
757 		memcpy(&fpregs->fpscr, &pcb->pcb_fpu.fpscr, sizeof(double));  in fill_fpregs()
759 			memcpy(&fpregs->fpreg[i], &pcb->pcb_fpu.fpr[i].fpr,  in fill_fpregs()
787 	struct pcb *pcb;  in set_fpregs()  local
790 	pcb = td->td_pcb;  in set_fpregs()
791 	pcb->pcb_flags |= PCB_FPREGS;  in set_fpregs()
792 	memcpy(&pcb->pcb_fpu.fpscr, &fpregs->fpscr, sizeof(double));  in set_fpregs()
794 		memcpy(&pcb->pcb_fpu.fpr[i].fpr, &fpregs->fpreg[i],  in set_fpregs()
1080 	struct pcb *pcb;  in cpu_thread_alloc()  local
1082 	pcb = (struct pcb *)((td->td_kstack + td->td_kstack_pages * PAGE_SIZE -  in cpu_thread_alloc()
1083 	    sizeof(struct pcb)) & ~0x2fUL);  in cpu_thread_alloc()
1084 	td->td_pcb = pcb;  in cpu_thread_alloc()
1085 	td->td_frame = (struct trapframe *)pcb - 1;  in cpu_thread_alloc()
1107 	struct pcb *pcb2;  in cpu_copy_thread()
1111 	/* Ensure td0 pcb is up to date. */  in cpu_copy_thread()
1117 	/* Copy the upcall pcb */  in cpu_copy_thread()
1254 	struct pcb *pcb;  in ppc_instr_emulate()  local
1281 	pcb = td->td_pcb;  in ppc_instr_emulate()
1283 	if (!(pcb->pcb_flags & PCB_FPREGS)) {  in ppc_instr_emulate()
1284 		bzero(&pcb->pcb_fpu, sizeof(pcb->pcb_fpu));  in ppc_instr_emulate()
1285 		pcb->pcb_flags |= PCB_FPREGS;  in ppc_instr_emulate()
1286 	} else if (pcb->pcb_flags & PCB_FPU)  in ppc_instr_emulate()
1288 	sig = fpu_emulate(frame, &pcb->pcb_fpu);  in ppc_instr_emulate()
1289 	if ((sig == 0 || sig == SIGFPE) && pcb->pcb_flags & PCB_FPU)  in ppc_instr_emulate()
1293 		if (pcb->pcb_lastill != frame->srr0) {  in ppc_instr_emulate()
1297 			pcb->pcb_lastill = frame->srr0;  in ppc_instr_emulate()