machdep.c (209613) | machdep.c (209950) |
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1/*- 2 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 3 * Copyright (C) 1995, 1996 TooLs GmbH. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: --- 41 unchanged lines hidden (view full) --- 50 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 51 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 52 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 53 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 54 * $NetBSD: machdep.c,v 1.74.2.1 2000/11/01 16:13:48 tv Exp $ 55 */ 56 57#include <sys/cdefs.h> | 1/*- 2 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 3 * Copyright (C) 1995, 1996 TooLs GmbH. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: --- 41 unchanged lines hidden (view full) --- 50 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 51 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 52 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 53 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 54 * $NetBSD: machdep.c,v 1.74.2.1 2000/11/01 16:13:48 tv Exp $ 55 */ 56 57#include <sys/cdefs.h> |
58__FBSDID("$FreeBSD: head/sys/powerpc/aim/machdep.c 209613 2010-06-30 18:03:42Z jhb $"); | 58__FBSDID("$FreeBSD: head/sys/powerpc/aim/machdep.c 209950 2010-07-12 16:08:07Z nwhitehorn $"); |
59 60#include "opt_compat.h" 61#include "opt_ddb.h" 62#include "opt_kstack_pages.h" 63#include "opt_msgbuf.h" 64 65#include <sys/param.h> 66#include <sys/proc.h> --- 83 unchanged lines hidden (view full) --- 150 151int save_ofw_mapping(void); 152int restore_ofw_mapping(void); 153 154void install_extint(void (*)(void)); 155 156int setfault(faultbuf); /* defined in locore.S */ 157 | 59 60#include "opt_compat.h" 61#include "opt_ddb.h" 62#include "opt_kstack_pages.h" 63#include "opt_msgbuf.h" 64 65#include <sys/param.h> 66#include <sys/proc.h> --- 83 unchanged lines hidden (view full) --- 150 151int save_ofw_mapping(void); 152int restore_ofw_mapping(void); 153 154void install_extint(void (*)(void)); 155 156int setfault(faultbuf); /* defined in locore.S */ 157 |
158static int grab_mcontext(struct thread *, mcontext_t *, int); 159 | |
160void asm_panic(char *); 161 162long Maxmem = 0; 163long realmem = 0; 164 165struct pmap ofw_pmap; 166extern int ofmsr; 167 --- 407 unchanged lines hidden (view full) --- 575 576 while (len) { 577 *p++ = 0; 578 len--; 579 } 580} 581 582void | 158void asm_panic(char *); 159 160long Maxmem = 0; 161long realmem = 0; 162 163struct pmap ofw_pmap; 164extern int ofmsr; 165 --- 407 unchanged lines hidden (view full) --- 573 574 while (len) { 575 *p++ = 0; 576 len--; 577 } 578} 579 580void |
583sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask) 584{ 585 struct trapframe *tf; 586 struct sigframe *sfp; 587 struct sigacts *psp; 588 struct sigframe sf; 589 struct thread *td; 590 struct proc *p; 591 int oonstack, rndfsize; 592 int sig; 593 int code; 594 595 td = curthread; 596 p = td->td_proc; 597 PROC_LOCK_ASSERT(p, MA_OWNED); 598 sig = ksi->ksi_signo; 599 code = ksi->ksi_code; 600 psp = p->p_sigacts; 601 mtx_assert(&psp->ps_mtx, MA_OWNED); 602 tf = td->td_frame; 603 oonstack = sigonstack(tf->fixreg[1]); 604 605 rndfsize = ((sizeof(sf) + 15) / 16) * 16; 606 607 CTR4(KTR_SIG, "sendsig: td=%p (%s) catcher=%p sig=%d", td, p->p_comm, 608 catcher, sig); 609 610 /* 611 * Save user context 612 */ 613 memset(&sf, 0, sizeof(sf)); 614 grab_mcontext(td, &sf.sf_uc.uc_mcontext, 0); 615 sf.sf_uc.uc_sigmask = *mask; 616 sf.sf_uc.uc_stack = td->td_sigstk; 617 sf.sf_uc.uc_stack.ss_flags = (td->td_pflags & TDP_ALTSTACK) 618 ? ((oonstack) ? SS_ONSTACK : 0) : SS_DISABLE; 619 620 sf.sf_uc.uc_mcontext.mc_onstack = (oonstack) ? 1 : 0; 621 622 /* 623 * Allocate and validate space for the signal handler context. 624 */ 625 if ((td->td_pflags & TDP_ALTSTACK) != 0 && !oonstack && 626 SIGISMEMBER(psp->ps_sigonstack, sig)) { 627 sfp = (struct sigframe *)(td->td_sigstk.ss_sp + 628 td->td_sigstk.ss_size - rndfsize); 629 } else { 630 sfp = (struct sigframe *)(tf->fixreg[1] - rndfsize); 631 } 632 633 /* 634 * Translate the signal if appropriate (Linux emu ?) 635 */ 636 if (p->p_sysent->sv_sigtbl && sig <= p->p_sysent->sv_sigsize) 637 sig = p->p_sysent->sv_sigtbl[_SIG_IDX(sig)]; 638 639 /* 640 * Save the floating-point state, if necessary, then copy it. 641 */ 642 /* XXX */ 643 644 /* 645 * Set up the registers to return to sigcode. 646 * 647 * r1/sp - sigframe ptr 648 * lr - sig function, dispatched to by blrl in trampoline 649 * r3 - sig number 650 * r4 - SIGINFO ? &siginfo : exception code 651 * r5 - user context 652 * srr0 - trampoline function addr 653 */ 654 tf->lr = (register_t)catcher; 655 tf->fixreg[1] = (register_t)sfp; 656 tf->fixreg[FIRSTARG] = sig; 657 tf->fixreg[FIRSTARG+2] = (register_t)&sfp->sf_uc; 658 if (SIGISMEMBER(psp->ps_siginfo, sig)) { 659 /* 660 * Signal handler installed with SA_SIGINFO. 661 */ 662 tf->fixreg[FIRSTARG+1] = (register_t)&sfp->sf_si; 663 664 /* 665 * Fill siginfo structure. 666 */ 667 sf.sf_si = ksi->ksi_info; 668 sf.sf_si.si_signo = sig; 669 sf.sf_si.si_addr = (void *)((tf->exc == EXC_DSI) ? 670 tf->cpu.aim.dar : tf->srr0); 671 } else { 672 /* Old FreeBSD-style arguments. */ 673 tf->fixreg[FIRSTARG+1] = code; 674 tf->fixreg[FIRSTARG+3] = (tf->exc == EXC_DSI) ? 675 tf->cpu.aim.dar : tf->srr0; 676 } 677 mtx_unlock(&psp->ps_mtx); 678 PROC_UNLOCK(p); 679 680 tf->srr0 = (register_t)(PS_STRINGS - *(p->p_sysent->sv_szsigcode)); 681 682 /* 683 * copy the frame out to userland. 684 */ 685 if (copyout(&sf, sfp, sizeof(*sfp)) != 0) { 686 /* 687 * Process has trashed its stack. Kill it. 688 */ 689 CTR2(KTR_SIG, "sendsig: sigexit td=%p sfp=%p", td, sfp); 690 PROC_LOCK(p); 691 sigexit(td, SIGILL); 692 } 693 694 CTR3(KTR_SIG, "sendsig: return td=%p pc=%#x sp=%#x", td, 695 tf->srr0, tf->fixreg[1]); 696 697 PROC_LOCK(p); 698 mtx_lock(&psp->ps_mtx); 699} 700 701int 702sigreturn(struct thread *td, struct sigreturn_args *uap) 703{ 704 ucontext_t uc; 705 int error; 706 707 CTR2(KTR_SIG, "sigreturn: td=%p ucp=%p", td, uap->sigcntxp); 708 709 if (copyin(uap->sigcntxp, &uc, sizeof(uc)) != 0) { 710 CTR1(KTR_SIG, "sigreturn: efault td=%p", td); 711 return (EFAULT); 712 } 713 714 error = set_mcontext(td, &uc.uc_mcontext); 715 if (error != 0) 716 return (error); 717 718 kern_sigprocmask(td, SIG_SETMASK, &uc.uc_sigmask, NULL, 0); 719 720 CTR3(KTR_SIG, "sigreturn: return td=%p pc=%#x sp=%#x", 721 td, uc.uc_mcontext.mc_srr0, uc.uc_mcontext.mc_gpr[1]); 722 723 return (EJUSTRETURN); 724} 725 726#ifdef COMPAT_FREEBSD4 727int 728freebsd4_sigreturn(struct thread *td, struct freebsd4_sigreturn_args *uap) 729{ 730 731 return sigreturn(td, (struct sigreturn_args *)uap); 732} 733#endif 734 735/* 736 * Construct a PCB from a trapframe. This is called from kdb_trap() where 737 * we want to start a backtrace from the function that caused us to enter 738 * the debugger. We have the context in the trapframe, but base the trace 739 * on the PCB. The PCB doesn't have to be perfect, as long as it contains 740 * enough for a backtrace. 741 */ 742void 743makectx(struct trapframe *tf, struct pcb *pcb) 744{ 745 746 pcb->pcb_lr = tf->srr0; 747 pcb->pcb_sp = tf->fixreg[1]; 748} 749 750/* 751 * get_mcontext/sendsig helper routine that doesn't touch the 752 * proc lock 753 */ 754static int 755grab_mcontext(struct thread *td, mcontext_t *mcp, int flags) 756{ 757 struct pcb *pcb; 758 759 pcb = td->td_pcb; 760 761 memset(mcp, 0, sizeof(mcontext_t)); 762 763 mcp->mc_vers = _MC_VERSION; 764 mcp->mc_flags = 0; 765 memcpy(&mcp->mc_frame, td->td_frame, sizeof(struct trapframe)); 766 if (flags & GET_MC_CLEAR_RET) { 767 mcp->mc_gpr[3] = 0; 768 mcp->mc_gpr[4] = 0; 769 } 770 771 /* 772 * This assumes that floating-point context is *not* lazy, 773 * so if the thread has used FP there would have been a 774 * FP-unavailable exception that would have set things up 775 * correctly. 776 */ 777 if (pcb->pcb_flags & PCB_FPU) { 778 KASSERT(td == curthread, 779 ("get_mcontext: fp save not curthread")); 780 critical_enter(); 781 save_fpu(td); 782 critical_exit(); 783 mcp->mc_flags |= _MC_FP_VALID; 784 memcpy(&mcp->mc_fpscr, &pcb->pcb_fpu.fpscr, sizeof(double)); 785 memcpy(mcp->mc_fpreg, pcb->pcb_fpu.fpr, 32*sizeof(double)); 786 } 787 788 /* 789 * Repeat for Altivec context 790 */ 791 792 if (pcb->pcb_flags & PCB_VEC) { 793 KASSERT(td == curthread, 794 ("get_mcontext: fp save not curthread")); 795 critical_enter(); 796 save_vec(td); 797 critical_exit(); 798 mcp->mc_flags |= _MC_AV_VALID; 799 mcp->mc_vscr = pcb->pcb_vec.vscr; 800 mcp->mc_vrsave = pcb->pcb_vec.vrsave; 801 memcpy(mcp->mc_avec, pcb->pcb_vec.vr, sizeof(mcp->mc_avec)); 802 } 803 804 mcp->mc_len = sizeof(*mcp); 805 806 return (0); 807} 808 809int 810get_mcontext(struct thread *td, mcontext_t *mcp, int flags) 811{ 812 int error; 813 814 error = grab_mcontext(td, mcp, flags); 815 if (error == 0) { 816 PROC_LOCK(curthread->td_proc); 817 mcp->mc_onstack = sigonstack(td->td_frame->fixreg[1]); 818 PROC_UNLOCK(curthread->td_proc); 819 } 820 821 return (error); 822} 823 824int 825set_mcontext(struct thread *td, const mcontext_t *mcp) 826{ 827 struct pcb *pcb; 828 struct trapframe *tf; 829 830 pcb = td->td_pcb; 831 tf = td->td_frame; 832 833 if (mcp->mc_vers != _MC_VERSION || 834 mcp->mc_len != sizeof(*mcp)) 835 return (EINVAL); 836 837 /* 838 * Don't let the user set privileged MSR bits 839 */ 840 if ((mcp->mc_srr1 & PSL_USERSTATIC) != (tf->srr1 & PSL_USERSTATIC)) { 841 return (EINVAL); 842 } 843 844 memcpy(tf, mcp->mc_frame, sizeof(mcp->mc_frame)); 845 846 if (mcp->mc_flags & _MC_FP_VALID) { 847 if ((pcb->pcb_flags & PCB_FPU) != PCB_FPU) { 848 critical_enter(); 849 enable_fpu(td); 850 critical_exit(); 851 } 852 memcpy(&pcb->pcb_fpu.fpscr, &mcp->mc_fpscr, sizeof(double)); 853 memcpy(pcb->pcb_fpu.fpr, mcp->mc_fpreg, 32*sizeof(double)); 854 } 855 856 if (mcp->mc_flags & _MC_AV_VALID) { 857 if ((pcb->pcb_flags & PCB_VEC) != PCB_VEC) { 858 critical_enter(); 859 enable_vec(td); 860 critical_exit(); 861 } 862 pcb->pcb_vec.vscr = mcp->mc_vscr; 863 pcb->pcb_vec.vrsave = mcp->mc_vrsave; 864 memcpy(pcb->pcb_vec.vr, mcp->mc_avec, sizeof(mcp->mc_avec)); 865 } 866 867 868 return (0); 869} 870 871void | |
872cpu_boot(int howto) 873{ 874} 875 876/* 877 * Flush the D-cache for non-DMA I/O so that the I-cache can 878 * be made coherent later. 879 */ --- 63 unchanged lines hidden (view full) --- 943 944int 945cpu_idle_wakeup(int cpu) 946{ 947 948 return (0); 949} 950 | 581cpu_boot(int howto) 582{ 583} 584 585/* 586 * Flush the D-cache for non-DMA I/O so that the I-cache can 587 * be made coherent later. 588 */ --- 63 unchanged lines hidden (view full) --- 652 653int 654cpu_idle_wakeup(int cpu) 655{ 656 657 return (0); 658} 659 |
951/* 952 * Set set up registers on exec. 953 */ 954void 955exec_setregs(struct thread *td, struct image_params *imgp, u_long stack) 956{ 957 struct trapframe *tf; 958 struct ps_strings arginfo; 959 960 tf = trapframe(td); 961 bzero(tf, sizeof *tf); 962 tf->fixreg[1] = -roundup(-stack + 8, 16); 963 964 /* 965 * XXX Machine-independent code has already copied arguments and 966 * XXX environment to userland. Get them back here. 967 */ 968 (void)copyin((char *)PS_STRINGS, &arginfo, sizeof(arginfo)); 969 970 /* 971 * Set up arguments for _start(): 972 * _start(argc, argv, envp, obj, cleanup, ps_strings); 973 * 974 * Notes: 975 * - obj and cleanup are the auxilliary and termination 976 * vectors. They are fixed up by ld.elf_so. 977 * - ps_strings is a NetBSD extention, and will be 978 * ignored by executables which are strictly 979 * compliant with the SVR4 ABI. 980 * 981 * XXX We have to set both regs and retval here due to different 982 * XXX calling convention in trap.c and init_main.c. 983 */ 984 /* 985 * XXX PG: these get overwritten in the syscall return code. 986 * execve() should return EJUSTRETURN, like it does on NetBSD. 987 * Emulate by setting the syscall return value cells. The 988 * registers still have to be set for init's fork trampoline. 989 */ 990 td->td_retval[0] = arginfo.ps_nargvstr; 991 td->td_retval[1] = (register_t)arginfo.ps_argvstr; 992 tf->fixreg[3] = arginfo.ps_nargvstr; 993 tf->fixreg[4] = (register_t)arginfo.ps_argvstr; 994 tf->fixreg[5] = (register_t)arginfo.ps_envstr; 995 tf->fixreg[6] = 0; /* auxillary vector */ 996 tf->fixreg[7] = 0; /* termination vector */ 997 tf->fixreg[8] = (register_t)PS_STRINGS; /* NetBSD extension */ 998 999 tf->srr0 = imgp->entry_addr; 1000 tf->srr1 = PSL_MBO | PSL_USERSET | PSL_FE_DFLT; 1001 td->td_pcb->pcb_flags = 0; 1002} 1003 | |
1004int | 660int |
1005fill_regs(struct thread *td, struct reg *regs) 1006{ 1007 struct trapframe *tf; 1008 1009 tf = td->td_frame; 1010 memcpy(regs, tf, sizeof(struct reg)); 1011 1012 return (0); 1013} 1014 1015int 1016fill_dbregs(struct thread *td, struct dbreg *dbregs) 1017{ 1018 /* No debug registers on PowerPC */ 1019 return (ENOSYS); 1020} 1021 1022int 1023fill_fpregs(struct thread *td, struct fpreg *fpregs) 1024{ 1025 struct pcb *pcb; 1026 1027 pcb = td->td_pcb; 1028 1029 if ((pcb->pcb_flags & PCB_FPU) == 0) 1030 memset(fpregs, 0, sizeof(struct fpreg)); 1031 else 1032 memcpy(fpregs, &pcb->pcb_fpu, sizeof(struct fpreg)); 1033 1034 return (0); 1035} 1036 1037int 1038set_regs(struct thread *td, struct reg *regs) 1039{ 1040 struct trapframe *tf; 1041 1042 tf = td->td_frame; 1043 memcpy(tf, regs, sizeof(struct reg)); 1044 1045 return (0); 1046} 1047 1048int 1049set_dbregs(struct thread *td, struct dbreg *dbregs) 1050{ 1051 /* No debug registers on PowerPC */ 1052 return (ENOSYS); 1053} 1054 1055int 1056set_fpregs(struct thread *td, struct fpreg *fpregs) 1057{ 1058 struct pcb *pcb; 1059 1060 pcb = td->td_pcb; 1061 if ((pcb->pcb_flags & PCB_FPU) == 0) 1062 enable_fpu(td); 1063 memcpy(&pcb->pcb_fpu, fpregs, sizeof(struct fpreg)); 1064 1065 return (0); 1066} 1067 1068int | |
1069ptrace_set_pc(struct thread *td, unsigned long addr) 1070{ 1071 struct trapframe *tf; 1072 1073 tf = td->td_frame; 1074 tf->srr0 = (register_t)addr; 1075 1076 return (0); --- 127 unchanged lines hidden --- | 661ptrace_set_pc(struct thread *td, unsigned long addr) 662{ 663 struct trapframe *tf; 664 665 tf = td->td_frame; 666 tf->srr0 = (register_t)addr; 667 668 return (0); --- 127 unchanged lines hidden --- |