File: [cvs.NetBSD.org] / src / sys / arch / amiga / amiga / machdep.c (download)
Revision 1.72.4.1, Sun May 26 16:23:23 1996 UTC (27 years, 11 months ago) by is
Branch: netbsd-1-2
CVS Tags: netbsd-1-2-RELEASE, netbsd-1-2-PATCH001, netbsd-1-2-BETA
Changes since 1.72: +13 -9
lines
Pullup from trunk: Retina blanking bug, misc. cleanup including #ifdef'ing
out of annoying (to the normal user) debug code.
|
/* $NetBSD: machdep.c,v 1.72.4.1 1996/05/26 16:23:23 is Exp $ */
/*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1982, 1986, 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: Utah $Hdr: machdep.c 1.63 91/04/24$
*
* @(#)machdep.c 7.16 (Berkeley) 6/3/91
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/signalvar.h>
#include <sys/kernel.h>
#include <sys/map.h>
#include <sys/proc.h>
#include <sys/buf.h>
#include <sys/reboot.h>
#include <sys/conf.h>
#include <sys/file.h>
#include <sys/clist.h>
#include <sys/callout.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/msgbuf.h>
#include <sys/user.h>
#include <sys/exec.h> /* for PS_STRINGS */
#include <sys/vnode.h>
#include <sys/queue.h>
#include <sys/sysctl.h>
#include <sys/mount.h>
#include <sys/syscallargs.h>
#include <sys/core.h>
#include <sys/kcore.h>
#ifdef SYSVSHM
#include <sys/shm.h>
#endif
#ifdef SYSVMSG
#include <sys/msg.h>
#endif
#ifdef SYSVSEM
#include <sys/sem.h>
#endif
#include <net/netisr.h>
#define MAXMEM 64*1024*CLSIZE /* XXX - from cmap.h */
#include <vm/vm_param.h>
#include <vm/pmap.h>
#include <vm/vm_map.h>
#include <vm/vm_object.h>
#include <vm/vm_kern.h>
#include <vm/vm_page.h>
#include <machine/db_machdep.h>
#include <ddb/db_sym.h>
#include <ddb/db_extern.h>
#include <machine/cpu.h>
#include <machine/reg.h>
#include <machine/psl.h>
#include <machine/pte.h>
#include <machine/kcore.h>
#include <dev/cons.h>
#include <amiga/amiga/isr.h>
#include <amiga/amiga/custom.h>
#ifdef DRACO
#include <amiga/amiga/drcustom.h>
#endif
#include <amiga/amiga/cia.h>
#include <amiga/amiga/cc.h>
#include <amiga/amiga/memlist.h>
#include "fd.h"
#include "ser.h"
#include "ether.h"
#include "ppp.h"
#include <net/netisr.h>
#include <net/if.h>
#ifdef INET
#include <netinet/in.h>
#ifdef NETHER
#include <netinet/if_ether.h>
#endif
#include <netinet/ip_var.h>
#endif
#ifdef NS
#include <netns/ns_var.h>
#endif
#ifdef ISO
#include <netiso/iso.h>
#include <netiso/clnp.h>
#endif
#if NPPP > 0
#include <net/ppp_defs.h>
#include <net/if_ppp.h>
#endif
/* vm_map_t buffer_map; */
extern vm_offset_t avail_end;
extern vm_offset_t avail_start;
/* prototypes */
void identifycpu __P((void));
vm_offset_t reserve_dumppages __P((vm_offset_t));
void dumpsys __P((void));
void initcpu __P((void));
void straytrap __P((int, u_short));
static void netintr __P((void));
static void call_sicallbacks __P((void));
void intrhand __P((int));
static void dumpmem __P((int *, int, int));
static char *hexstr __P((int, int));
#if NSER > 0
void ser_outintr __P((void));
#endif
#if NFD > 0
void fdintr __P((int));
#endif
/*
* Declare these as initialized data so we can patch them.
*/
int nswbuf = 0;
#ifdef NBUF
int nbuf = NBUF;
#else
int nbuf = 0;
#endif
#ifdef BUFPAGES
int bufpages = BUFPAGES;
#else
int bufpages = 0;
#endif
int msgbufmapped; /* set when safe to use msgbuf */
int maxmem; /* max memory per process */
int physmem = MAXMEM; /* max supported memory, changes to actual */
/*
* extender "register" for software interrupts. Moved here
* from locore.s, since softints are no longer dealt with
* in locore.s.
*/
unsigned char ssir;
/*
* safepri is a safe priority for sleep to set for a spin-wait
* during autoconfiguration or after a panic.
*/
int safepri = PSL_LOWIPL;
extern int freebufspace;
extern u_int lowram;
/* used in init_main.c */
char *cpu_type = "m68k";
/* the following is used externally (sysctl_hw) */
char machine[] = "amiga";
/*
* Console initialization: called early on from main,
* before vm init or startup. Do enough configuration
* to choose and initialize a console.
*/
void
consinit()
{
/* initialize custom chip interface */
#ifdef DRACO
if (is_draco()) {
/* XXX to be done */
} else
#endif
custom_chips_init();
/*
* Initialize the console before we print anything out.
*/
cninit();
#if defined (DDB)
ddb_init();
if (boothowto & RB_KDB)
Debugger();
#endif
}
/*
* cpu_startup: allocate memory for variable-sized tables,
* initialize cpu, and do autoconfiguration.
*/
void
cpu_startup()
{
register unsigned i;
register caddr_t v, firstaddr;
int base, residual;
#ifdef DEBUG
extern int pmapdebug;
int opmapdebug = pmapdebug;
#endif
vm_offset_t minaddr, maxaddr;
vm_size_t size = 0;
#if defined(MACHINE_NONCONTIG) && defined(DEBUG)
extern struct {
vm_offset_t start;
vm_offset_t end;
int first_page;
} phys_segs[16];
#endif
/*
* Initialize error message buffer (at end of core).
*/
#ifdef DEBUG
pmapdebug = 0;
#endif
/* avail_end was pre-decremented in pmap_bootstrap to compensate */
for (i = 0; i < btoc(sizeof (struct msgbuf)); i++)
pmap_enter(pmap_kernel(), (vm_offset_t)msgbufp,
avail_end + i * NBPG, VM_PROT_ALL, TRUE);
msgbufmapped = 1;
/*
* Good {morning,afternoon,evening,night}.
*/
printf(version);
identifycpu();
printf("real mem = %d (%d pages)\n", ctob(physmem), ctob(physmem)/NBPG);
/*
* Allocate space for system data structures.
* The first available real memory address is in "firstaddr".
* The first available kernel virtual address is in "v".
* As pages of kernel virtual memory are allocated, "v" is incremented.
* As pages of memory are allocated and cleared,
* "firstaddr" is incremented.
* An index into the kernel page table corresponding to the
* virtual memory address maintained in "v" is kept in "mapaddr".
*/
/*
* Make two passes. The first pass calculates how much memory is
* needed and allocates it. The second pass assigns virtual
* addresses to the various data structures.
*/
firstaddr = 0;
again:
v = (caddr_t)firstaddr;
#define valloc(name, type, num) \
(name) = (type *)v; v = (caddr_t)((name)+(num))
#define valloclim(name, type, num, lim) \
(name) = (type *)v; v = (caddr_t)((lim) = ((name)+(num)))
/* valloc(cfree, struct cblock, nclist); */
valloc(callout, struct callout, ncallout);
valloc(swapmap, struct map, nswapmap = maxproc * 2);
#ifdef SYSVSHM
valloc(shmsegs, struct shmid_ds, shminfo.shmmni);
#endif
#ifdef SYSVSEM
valloc(sema, struct semid_ds, seminfo.semmni);
valloc(sem, struct sem, seminfo.semmns);
/* This is pretty disgusting! */
valloc(semu, int, (seminfo.semmnu * seminfo.semusz) / sizeof(int));
#endif
#ifdef SYSVMSG
valloc(msgpool, char, msginfo.msgmax);
valloc(msgmaps, struct msgmap, msginfo.msgseg);
valloc(msghdrs, struct msg, msginfo.msgtql);
valloc(msqids, struct msqid_ds, msginfo.msgmni);
#endif
/*
* Determine how many buffers to allocate. We allocate
* the BSD standard of use 10% of memory for the first 2 Meg,
* 5% of remaining. Insure a minimum of 16 buffers.
* We allocate 3/4 as many swap buffer headers as file i/o buffers.
*/
if (bufpages == 0)
if (physmem < btoc(2 * 1024 * 1024))
bufpages = physmem / (10 * CLSIZE);
else
bufpages = (btoc(2 * 1024 * 1024) + physmem) /
(20 * CLSIZE);
if (nbuf == 0) {
nbuf = bufpages;
if (nbuf < 16)
nbuf = 16;
}
if (nswbuf == 0) {
nswbuf = (nbuf * 3 / 4) &~ 1; /* force even */
if (nswbuf > 256)
nswbuf = 256; /* sanity */
}
valloc(swbuf, struct buf, nswbuf);
valloc(buf, struct buf, nbuf);
/*
* End of first pass, size has been calculated so allocate memory
*/
if (firstaddr == 0) {
size = (vm_size_t)(v - firstaddr);
firstaddr = (caddr_t) kmem_alloc(kernel_map, round_page(size));
if (firstaddr == 0)
panic("startup: no room for tables");
goto again;
}
/*
* End of second pass, addresses have been assigned
*/
if ((vm_size_t)(v - firstaddr) != size)
panic("startup: table size inconsistency");
/*
* Now allocate buffers proper. They are different than the above
* in that they usually occupy more virtual memory than physical.
*/
size = MAXBSIZE * nbuf;
buffer_map = kmem_suballoc(kernel_map, (vm_offset_t *)&buffers,
&maxaddr, size, TRUE);
minaddr = (vm_offset_t)buffers;
if (vm_map_find(buffer_map, vm_object_allocate(size), (vm_offset_t)0,
&minaddr, size, FALSE) != KERN_SUCCESS)
panic("startup: cannot allocate buffers");
if ((bufpages / nbuf) >= btoc(MAXBSIZE)) {
/* don't want to alloc more physical mem than needed */
bufpages = btoc(MAXBSIZE) * nbuf;
}
base = bufpages / nbuf;
residual = bufpages % nbuf;
for (i = 0; i < nbuf; i++) {
vm_size_t curbufsize;
vm_offset_t curbuf;
/*
* First <residual> buffers get (base+1) physical pages
* allocated for them. The rest get (base) physical pages.
*
* The rest of each buffer occupies virtual space,
* but has no physical memory allocated for it.
*/
curbuf = (vm_offset_t)buffers + i * MAXBSIZE;
curbufsize = CLBYTES * (i < residual ? base+1 : base);
vm_map_pageable(buffer_map, curbuf, curbuf+curbufsize, FALSE);
vm_map_simplify(buffer_map, curbuf);
}
/*
* Allocate a submap for exec arguments. This map effectively
* limits the number of processes exec'ing at any time.
*/
exec_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr,
16*NCARGS, TRUE);
/*
* Allocate a submap for physio
*/
phys_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr,
VM_PHYS_SIZE, TRUE);
/*
* Finally, allocate mbuf pool. Since mclrefcnt is an off-size
* we use the more space efficient malloc in place of kmem_alloc.
*/
mclrefcnt = (char *)malloc(NMBCLUSTERS+CLBYTES/MCLBYTES,
M_MBUF, M_NOWAIT);
bzero(mclrefcnt, NMBCLUSTERS+CLBYTES/MCLBYTES);
mb_map = kmem_suballoc(kernel_map, (vm_offset_t *)&mbutl, &maxaddr,
VM_MBUF_SIZE, FALSE);
/*
* Initialize callouts
*/
callfree = callout;
for (i = 1; i < ncallout; i++)
callout[i-1].c_next = &callout[i];
#ifdef DEBUG
pmapdebug = opmapdebug;
#endif
printf("avail mem = %ld (%ld pages)\n", ptoa(cnt.v_free_count),
ptoa(cnt.v_free_count)/NBPG);
printf("using %d buffers containing %d bytes of memory\n",
nbuf, bufpages * CLBYTES);
/*
* display memory configuration passed from loadbsd
*/
if (memlist->m_nseg > 0 && memlist->m_nseg < 16)
for (i = 0; i < memlist->m_nseg; i++)
printf("memory segment %d at %x size %x\n", i,
memlist->m_seg[i].ms_start,
memlist->m_seg[i].ms_size);
#if defined(MACHINE_NONCONTIG) && defined(DEBUG)
printf ("Physical memory segments:\n");
for (i = 0; i < memlist->m_nseg && phys_segs[i].start; ++i)
printf ("Physical segment %d at %08lx size %ld offset %d\n", i,
phys_segs[i].start,
(phys_segs[i].end - phys_segs[i].start) / NBPG,
phys_segs[i].first_page);
#endif
#ifdef DEBUG_KERNEL_START
printf("calling initcpu...\n");
#endif
/*
* Set up CPU-specific registers, cache, etc.
*/
initcpu();
#ifdef DEBUG_KERNEL_START
printf("survived initcpu...\n");
#endif
/*
* Set up buffers, so they can be used to read disk labels.
*/
bufinit();
#ifdef DEBUG_KERNEL_START
printf("survived bufinit...\n");
#endif
/*
* Configure the system.
*/
configure();
#ifdef DEBUG_KERNEL_START
printf("survived configure...\n");
#endif
}
/*
* Set registers on exec.
* XXX Should clear registers except sp, pc,
* but would break init; should be fixed soon.
*/
void
setregs(p, pack, stack, retval)
register struct proc *p;
struct exec_package *pack;
u_long stack;
register_t *retval;
{
struct frame *frame = (struct frame *)p->p_md.md_regs;
frame->f_pc = pack->ep_entry & ~1;
frame->f_regs[SP] = stack;
frame->f_regs[A2] = (int)PS_STRINGS;
#ifdef FPCOPROC
/* restore a null state frame */
p->p_addr->u_pcb.pcb_fpregs.fpf_null = 0;
m68881_restore(&p->p_addr->u_pcb.pcb_fpregs);
#endif
}
/*
* Info for CTL_HW
*/
char cpu_model[120];
extern char version[];
void
identifycpu()
{
/* there's alot of XXX in here... */
char *mach, *mmu, *fpu;
#ifdef M68060
char cpubuf[16];
u_int32_t pcr;
#endif
#ifdef DRACO
char machbuf[16];
if (is_draco()) {
sprintf(machbuf, "DraCo rev.%d", is_draco());
mach = machbuf;
} else
#endif
if (is_a4000())
mach = "Amiga 4000";
else if (is_a3000())
mach = "Amiga 3000";
else if (is_a1200())
mach = "Amiga 1200";
else
mach = "Amiga 500/2000";
fpu = NULL;
#ifdef M68060
if (machineid & AMIGA_68060) {
asm(".word 0x4e7a,0x0808; movl d0,%0" : "=d"(pcr) : : "d0");
sprintf(cpubuf, "68%s060 rev.%d",
pcr & 0x10000 ? "LC/EC" : "", (pcr>>8)&0xff);
cpu_type = cpubuf;
mmu = "/MMU";
fpu = "/FPU";
fputype = FPU_68040; /* XXX */
} else
#endif
if (machineid & AMIGA_68040) {
cpu_type = "m68040";
mmu = "/MMU";
fpu = "/FPU";
fputype = FPU_68040;
} else if (machineid & AMIGA_68030) {
cpu_type = "m68030"; /* XXX */
mmu = "/MMU";
} else {
cpu_type = "m68020";
mmu = " m68851 MMU";
}
if (fpu == NULL) {
if (machineid & AMIGA_68882) {
fpu = " m68882 FPU";
fputype = FPU_68882;
} else if (machineid & AMIGA_68881) {
fpu = " m68881 FPU";
fputype = FPU_68881;
} else {
fpu = " no FPU";
fputype = FPU_NONE;
}
}
sprintf(cpu_model, "%s (%s CPU%s%s)", mach, cpu_type, mmu, fpu);
printf("%s\n", cpu_model);
}
/*
* machine dependent system variables.
*/
int
cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p)
int *name;
u_int namelen;
void *oldp;
size_t *oldlenp;
void *newp;
size_t newlen;
struct proc *p;
{
dev_t consdev;
/* all sysctl names at this level are terminal */
if (namelen != 1)
return(ENOTDIR); /* overloaded */
switch (name[0]) {
case CPU_CONSDEV:
if (cn_tab != NULL)
consdev = cn_tab->cn_dev;
else
consdev = NODEV;
return(sysctl_rdstruct(oldp, oldlenp, newp, &consdev,
sizeof(consdev)));
default:
return(EOPNOTSUPP);
}
/* NOTREACHED */
}
#define SS_RTEFRAME 1
#define SS_FPSTATE 2
#define SS_USERREGS 4
struct sigstate {
int ss_flags; /* which of the following are valid */
struct frame ss_frame; /* original exception frame */
struct fpframe ss_fpstate; /* 68881/68882 state info */
};
/*
* WARNING: code in locore.s assumes the layout shown for sf_signum
* thru sf_handler so... don't screw with them!
*/
struct sigframe {
int sf_signum; /* signo for handler */
int sf_code; /* additional info for handler */
struct sigcontext *sf_scp; /* context ptr for handler */
sig_t sf_handler; /* handler addr for u_sigc */
struct sigstate sf_state; /* state of the hardware */
struct sigcontext sf_sc; /* actual context */
};
#ifdef DEBUG
int sigdebug = 0x0;
int sigpid = 0;
#define SDB_FOLLOW 0x01
#define SDB_KSTACK 0x02
#define SDB_FPSTATE 0x04
#endif
/*
* Send an interrupt to process.
*/
void
sendsig(catcher, sig, mask, code)
sig_t catcher;
int sig, mask;
u_long code;
{
register struct proc *p = curproc;
register struct sigframe *fp, *kfp;
register struct frame *frame;
register struct sigacts *psp = p->p_sigacts;
register short ft;
int oonstack;
extern short exframesize[];
extern char sigcode[], esigcode[];
/*printf("sendsig %d %d %x %x %x\n", p->p_pid, sig, mask, code, catcher);*/
frame = (struct frame *)p->p_md.md_regs;
ft = frame->f_format;
oonstack = psp->ps_sigstk.ss_flags & SS_ONSTACK;
/*
* Allocate and validate space for the signal handler
* context. Note that if the stack is in P0 space, the
* call to grow() is a nop, and the useracc() check
* will fail if the process has not already allocated
* the space with a `brk'.
*/
if ((psp->ps_flags & SAS_ALTSTACK) && oonstack == 0 &&
(psp->ps_sigonstack & sigmask(sig))) {
fp = (struct sigframe *)(psp->ps_sigstk.ss_sp +
psp->ps_sigstk.ss_size - sizeof(struct sigframe));
psp->ps_sigstk.ss_flags |= SS_ONSTACK;
} else
fp = (struct sigframe *)frame->f_regs[SP] - 1;
if ((unsigned)fp <= USRSTACK - ctob(p->p_vmspace->vm_ssize))
(void)grow(p, (unsigned)fp);
#ifdef DEBUG
if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid)
printf("sendsig(%d): sig %d ssp %p usp %p scp %p ft %d\n",
p->p_pid, sig, &oonstack, fp, &fp->sf_sc, ft);
#endif
if (useracc((caddr_t)fp, sizeof(struct sigframe), B_WRITE) == 0) {
#ifdef DEBUG
if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid)
printf("sendsig(%d): useracc failed on sig %d\n",
p->p_pid, sig);
#endif
/*
* Process has trashed its stack; give it an illegal
* instruction to halt it in its tracks.
*/
SIGACTION(p, SIGILL) = SIG_DFL;
sig = sigmask(SIGILL);
p->p_sigignore &= ~sig;
p->p_sigcatch &= ~sig;
p->p_sigmask &= ~sig;
psignal(p, SIGILL);
return;
}
kfp = malloc(sizeof(struct sigframe), M_TEMP, M_WAITOK);
/*
* Build the argument list for the signal handler.
*/
kfp->sf_signum = sig;
kfp->sf_code = code;
kfp->sf_scp = &fp->sf_sc;
kfp->sf_handler = catcher;
/*
* Save necessary hardware state. Currently this includes:
* - general registers
* - original exception frame (if not a "normal" frame)
* - FP coprocessor state
*/
kfp->sf_state.ss_flags = SS_USERREGS;
bcopy((caddr_t)frame->f_regs,
(caddr_t)kfp->sf_state.ss_frame.f_regs, sizeof frame->f_regs);
if (ft >= FMT9) {
#ifdef DEBUG
if (ft != FMT9 && ft != FMTA && ft != FMTB)
panic("sendsig: bogus frame type");
#endif
kfp->sf_state.ss_flags |= SS_RTEFRAME;
kfp->sf_state.ss_frame.f_format = frame->f_format;
kfp->sf_state.ss_frame.f_vector = frame->f_vector;
bcopy((caddr_t)&frame->F_u,
(caddr_t)&kfp->sf_state.ss_frame.F_u, exframesize[ft]);
/*
* Leave an indicator that we need to clean up the kernel
* stack. We do this by setting the "pad word" above the
* hardware stack frame to the amount the stack must be
* adjusted by.
*
* N.B. we increment rather than just set f_stackadj in
* case we are called from syscall when processing a
* sigreturn. In that case, f_stackadj may be non-zero.
*/
frame->f_stackadj += exframesize[ft];
frame->f_format = frame->f_vector = 0;
#ifdef DEBUG
if (sigdebug & SDB_FOLLOW)
printf("sendsig(%d): copy out %d of frame %d\n",
p->p_pid, exframesize[ft], ft);
#endif
}
#ifdef FPCOPROC
kfp->sf_state.ss_flags |= SS_FPSTATE;
m68881_save(&kfp->sf_state.ss_fpstate);
#ifdef DEBUG
if ((sigdebug & SDB_FPSTATE) && *(char *)&kfp->sf_state.ss_fpstate)
printf("sendsig(%d): copy out FP state (%x) to %p\n",
p->p_pid, *(u_int *)&kfp->sf_state.ss_fpstate,
&kfp->sf_state.ss_fpstate);
#endif
#endif
/*
* Build the signal context to be used by sigreturn.
*/
kfp->sf_sc.sc_onstack = oonstack;
kfp->sf_sc.sc_mask = mask;
kfp->sf_sc.sc_sp = frame->f_regs[SP];
kfp->sf_sc.sc_fp = frame->f_regs[A6];
kfp->sf_sc.sc_ap = (int)&fp->sf_state;
kfp->sf_sc.sc_pc = frame->f_pc;
kfp->sf_sc.sc_ps = frame->f_sr;
(void) copyout((caddr_t)kfp, (caddr_t)fp, sizeof(struct sigframe));
frame->f_regs[SP] = (int)fp;
#ifdef DEBUG
if (sigdebug & SDB_FOLLOW)
printf("sendsig(%d): sig %d scp %p fp %p sc_sp %x sc_ap %x\n",
p->p_pid, sig, kfp->sf_scp, fp,
kfp->sf_sc.sc_sp, kfp->sf_sc.sc_ap);
#endif
/*
* Signal trampoline code is at base of user stack.
*/
frame->f_pc = (int)(((char *)PS_STRINGS) - (esigcode - sigcode));
#ifdef DEBUG
if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid)
printf("sendsig(%d): sig %d returns\n",
p->p_pid, sig);
#endif
free((caddr_t)kfp, M_TEMP);
}
/*
* System call to cleanup state after a signal
* has been taken. Reset signal mask and
* stack state from context left by sendsig (above).
* Return to previous pc and psl as specified by
* context left by sendsig. Check carefully to
* make sure that the user has not modified the
* psl to gain improper priviledges or to cause
* a machine fault.
*/
/* ARGSUSED */
int
sys_sigreturn(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct sys_sigreturn_args /* {
syscallarg(struct sigcontext *) sigcntxp;
} */ *uap = v;
struct sigcontext *scp, context;
struct frame *frame;
int rf, flags;
struct sigstate tstate;
extern short exframesize[];
scp = SCARG(uap, sigcntxp);
#ifdef DEBUG
if (sigdebug & SDB_FOLLOW)
printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp);
#endif
if ((int)scp & 1)
return(EINVAL);
/*
* Test and fetch the context structure.
* We grab it all at once for speed.
*/
if (useracc((caddr_t)scp, sizeof(*scp), B_WRITE) == 0 ||
copyin(scp, &context, sizeof(context)))
return(EINVAL);
scp = &context;
if ((scp->sc_ps & (PSL_MBZ|PSL_IPL|PSL_S)) != 0)
return(EINVAL);
/*
* Restore the user supplied information
*/
if (scp->sc_onstack & 1)
p->p_sigacts->ps_sigstk.ss_flags |= SS_ONSTACK;
else
p->p_sigacts->ps_sigstk.ss_flags &= ~SS_ONSTACK;
p->p_sigmask = scp->sc_mask &~ sigcantmask;
frame = (struct frame *) p->p_md.md_regs;
frame->f_regs[SP] = scp->sc_sp;
frame->f_regs[A6] = scp->sc_fp;
frame->f_pc = scp->sc_pc;
frame->f_sr = scp->sc_ps;
/*
* Grab pointer to hardware state information.
* If zero, the user is probably doing a longjmp.
*/
if ((rf = scp->sc_ap) == 0)
return (EJUSTRETURN);
/*
* See if there is anything to do before we go to the
* expense of copying in close to 1/2K of data
*/
flags = fuword((caddr_t)rf);
#ifdef DEBUG
if (sigdebug & SDB_FOLLOW)
printf("sigreturn(%d): sc_ap %x flags %x\n",
p->p_pid, rf, flags);
#endif
/*
* fuword failed (bogus sc_ap value).
*/
if (flags == -1)
return (EINVAL);
if (flags == 0 || copyin((caddr_t)rf, (caddr_t)&tstate, sizeof tstate))
return (EJUSTRETURN);
#ifdef DEBUG
if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid)
printf("sigreturn(%d): ssp %p usp %x scp %p ft %d\n",
p->p_pid, &flags, scp->sc_sp, SCARG(uap, sigcntxp),
(flags&SS_RTEFRAME) ? tstate.ss_frame.f_format : -1);
#endif
/*
* Restore most of the users registers except for A6 and SP
* which were handled above.
*/
if (flags & SS_USERREGS)
bcopy((caddr_t)tstate.ss_frame.f_regs,
(caddr_t)frame->f_regs, sizeof(frame->f_regs)-2*NBPW);
/*
* Restore long stack frames. Note that we do not copy
* back the saved SR or PC, they were picked up above from
* the sigcontext structure.
*/
if (flags & SS_RTEFRAME) {
register int sz;
/* grab frame type and validate */
sz = tstate.ss_frame.f_format;
if (sz > 15 || (sz = exframesize[sz]) < 0)
return (EINVAL);
frame->f_stackadj -= sz;
frame->f_format = tstate.ss_frame.f_format;
frame->f_vector = tstate.ss_frame.f_vector;
bcopy((caddr_t)&tstate.ss_frame.F_u, (caddr_t)&frame->F_u, sz);
#ifdef DEBUG
if (sigdebug & SDB_FOLLOW)
printf("sigreturn(%d): copy in %d of frame type %d\n",
p->p_pid, sz, tstate.ss_frame.f_format);
#endif
}
#ifdef FPCOPROC
/*
* Finally we restore the original FP context
*/
if (flags & SS_FPSTATE)
m68881_restore(&tstate.ss_fpstate);
#ifdef DEBUG
if ((sigdebug & SDB_FPSTATE) && *(char *)&tstate.ss_fpstate)
printf("sigreturn(%d): copied in FP state (%x) at %p\n",
p->p_pid, *(u_int *)&tstate.ss_fpstate,
&tstate.ss_fpstate);
#endif
#endif
#ifdef DEBUG
if ((sigdebug & SDB_FOLLOW) ||
((sigdebug & SDB_KSTACK) && p->p_pid == sigpid))
printf("sigreturn(%d): returns\n", p->p_pid);
#endif
return (EJUSTRETURN);
}
static int waittime = -1;
void
bootsync(void)
{
if (waittime < 0) {
register struct buf *bp;
int iter, nbusy;
waittime = 0;
(void) spl0();
printf("syncing disks... ");
/*
* Release vnodes held by texts before sync.
*/
if (panicstr == 0)
vnode_pager_umount(NULL);
sys_sync(&proc0, (void *)NULL, (int *)NULL);
/*
* unmount filesystems
*/
if (panicstr == 0)
vfs_unmountall();
for (iter = 0; iter < 20; iter++) {
nbusy = 0;
for (bp = &buf[nbuf]; --bp >= buf; )
if ((bp->b_flags & (B_BUSY|B_INVAL)) == B_BUSY)
nbusy++;
if (nbusy == 0)
break;
printf("%d ", nbusy);
delay(40000 * iter);
}
if (nbusy)
printf("giving up\n");
else
printf("done\n");
/*
* If we've been adjusting the clock, the todr
* will be out of synch; adjust it now.
*/
resettodr();
}
}
void
boot(howto)
register int howto;
{
/* take a snap shot before clobbering any registers */
if (curproc)
savectx(&curproc->p_addr->u_pcb);
boothowto = howto;
if ((howto & RB_NOSYNC) == 0)
bootsync();
/* Disable interrupts. */
spl7();
/* If rebooting and a dump is requested do it. */
if (howto & RB_DUMP)
dumpsys();
if (howto & RB_HALT) {
printf("System halted.\n\n");
asm(" stop #0x2700");
/*NOTREACHED*/
}
doboot();
/*NOTREACHED*/
}
unsigned dumpmag = 0x8fca0101; /* magic number for savecore */
int dumpsize = 0; /* also for savecore */
long dumplo = 0;
cpu_kcore_hdr_t cpu_kcore_hdr;
void
dumpconf()
{
int nblks;
int i;
extern u_int Sysseg_pa;
/* XXX new corefile format, single segment + chipmem */
dumpsize = physmem;
cpu_kcore_hdr.ram_segs[0].start = lowram;
cpu_kcore_hdr.ram_segs[0].size = ctob(physmem);
for (i = 0; i < memlist->m_nseg; i++) {
if ((memlist->m_seg[i].ms_attrib & MEMF_CHIP) == 0)
continue;
dumpsize += btoc(memlist->m_seg[i].ms_size);
cpu_kcore_hdr.ram_segs[1].start = 0;
cpu_kcore_hdr.ram_segs[1].size = memlist->m_seg[i].ms_size;
break;
}
cpu_kcore_hdr.mmutype = mmutype;
cpu_kcore_hdr.kernel_pa = lowram;
cpu_kcore_hdr.sysseg_pa = (st_entry_t *)Sysseg_pa;
if (dumpdev != NODEV && bdevsw[major(dumpdev)].d_psize) {
nblks = (*bdevsw[major(dumpdev)].d_psize)(dumpdev);
if (dumpsize > btoc(dbtob(nblks - dumplo)))
dumpsize = btoc(dbtob(nblks - dumplo));
else if (dumplo == 0)
dumplo = nblks - btodb(ctob(dumpsize));
}
--dumplo; /* XXX assume header fits in one block */
/*
* Don't dump on the first CLBYTES (why CLBYTES?)
* in case the dump device includes a disk label.
*/
if (dumplo < btodb(CLBYTES))
dumplo = btodb(CLBYTES);
}
/*
* Doadump comes here after turning off memory management and
* getting on the dump stack, either when called above, or by
* the auto-restart code.
*/
#define BYTES_PER_DUMP MAXPHYS /* Must be a multiple of pagesize XXX small */
static vm_offset_t dumpspace;
vm_offset_t
reserve_dumppages(p)
vm_offset_t p;
{
dumpspace = p;
return (p + BYTES_PER_DUMP);
}
void
dumpsys()
{
unsigned bytes, i, n, seg;
int maddr, psize;
daddr_t blkno;
int (*dump) __P((dev_t, daddr_t, caddr_t, size_t));
int error = 0;
kcore_seg_t *kseg_p;
cpu_kcore_hdr_t *chdr_p;
char dump_hdr[dbtob(1)]; /* XXX assume hdr fits in 1 block */
msgbufmapped = 0;
if (dumpdev == NODEV)
return;
/*
* For dumps during autoconfiguration,
* if dump device has already configured...
*/
if (dumpsize == 0)
dumpconf();
if (dumplo < 0)
return;
printf("\ndumping to dev %x, offset %ld\n", dumpdev, dumplo);
psize = (*bdevsw[major(dumpdev)].d_psize) (dumpdev);
printf("dump ");
if (psize == -1) {
printf("area unavailable.\n");
return;
}
kseg_p = (kcore_seg_t *)dump_hdr;
chdr_p = (cpu_kcore_hdr_t *)&dump_hdr[ALIGN(sizeof(*kseg_p))];
bzero(dump_hdr, sizeof(dump_hdr));
/*
* Generate a segment header
*/
CORE_SETMAGIC(*kseg_p, KCORE_MAGIC, MID_MACHINE, CORE_CPU);
kseg_p->c_size = dbtob(1) - ALIGN(sizeof(*kseg_p));
/*
* Add the md header
*/
*chdr_p = cpu_kcore_hdr;
bytes = ctob(dumpsize);
maddr = cpu_kcore_hdr.ram_segs[0].start;
seg = 0;
blkno = dumplo;
dump = bdevsw[major(dumpdev)].d_dump;
error = (*dump) (dumpdev, blkno++, (caddr_t)dump_hdr, dbtob(1));
for (i = 0; i < bytes && error == 0; i += n) {
/* Print out how many MBs we have to go. */
n = bytes - i;
if (n && (n % (1024 * 1024)) == 0)
printf("%d ", n / (1024 * 1024));
/* Limit size for next transfer. */
if (n > BYTES_PER_DUMP)
n = BYTES_PER_DUMP;
if (maddr == 0) { /* XXX kvtop chokes on this */
maddr += NBPG;
n -= NBPG;
i += NBPG;
++blkno; /* XXX skip physical page 0 */
}
(void) pmap_map(dumpspace, maddr, maddr + n, VM_PROT_READ);
error = (*dump) (dumpdev, blkno, (caddr_t) dumpspace, n);
if (error)
break;
maddr += n;
blkno += btodb(n); /* XXX? */
if (maddr >= (cpu_kcore_hdr.ram_segs[seg].start +
cpu_kcore_hdr.ram_segs[seg].size)) {
++seg;
maddr = cpu_kcore_hdr.ram_segs[seg].start;
if (cpu_kcore_hdr.ram_segs[seg].size == 0)
break;
}
}
switch (error) {
case ENXIO:
printf("device bad\n");
break;
case EFAULT:
printf("device not ready\n");
break;
case EINVAL:
printf("area improper\n");
break;
case EIO:
printf("i/o error\n");
break;
default:
printf("succeeded\n");
break;
}
printf("\n\n");
delay(5000000); /* 5 seconds */
}
/*
* Return the best possible estimate of the time in the timeval
* to which tvp points. We do this by returning the current time
* plus the amount of time since the last clock interrupt (clock.c:clkread).
*
* Check that this time is no less than any previously-reported time,
* which could happen around the time of a clock adjustment. Just for fun,
* we guarantee that the time will be greater than the value obtained by a
* previous call.
*/
void
microtime(tvp)
register struct timeval *tvp;
{
int s = spl7();
static struct timeval lasttime;
*tvp = time;
tvp->tv_usec += clkread();
while (tvp->tv_usec > 1000000) {
tvp->tv_sec++;
tvp->tv_usec -= 1000000;
}
if (tvp->tv_sec == lasttime.tv_sec &&
tvp->tv_usec <= lasttime.tv_usec &&
(tvp->tv_usec = lasttime.tv_usec + 1) > 1000000) {
tvp->tv_sec++;
tvp->tv_usec -= 1000000;
}
lasttime = *tvp;
splx(s);
}
#if defined(M68060)
int m68060_pcr_init = 0x21; /* make this patchable */
#endif
void
initcpu()
{
/* XXX should init '40 vecs here, too */
#if defined(M68060) || defined(DRACO)
extern caddr_t vectab[256];
#endif
#ifdef M68060
#if defined(M060SP)
extern u_int8_t I_CALL_TOP[];
extern u_int8_t FP_CALL_TOP[];
#else
extern u_int8_t illinst;
#endif
extern u_int8_t fpfault;
#endif
#ifdef DRACO
extern u_int8_t DraCoIntr, DraCoLev2intr;
#endif
#ifdef M68060
if (machineid & AMIGA_68060) {
asm volatile ("movl %0,d0; .word 0x4e7b,0x0808" : :
"d"(m68060_pcr_init):"d0" );
#if defined(M060SP)
/* integer support */
vectab[61] = &I_CALL_TOP[128 + 0x00];
/* floating point support */
vectab[11] = &FP_CALL_TOP[128 + 0x30];
vectab[55] = &FP_CALL_TOP[128 + 0x38];
vectab[60] = &FP_CALL_TOP[128 + 0x40];
vectab[54] = &FP_CALL_TOP[128 + 0x00];
vectab[52] = &FP_CALL_TOP[128 + 0x08];
vectab[53] = &FP_CALL_TOP[128 + 0x10];
vectab[51] = &FP_CALL_TOP[128 + 0x18];
vectab[50] = &FP_CALL_TOP[128 + 0x20];
vectab[49] = &FP_CALL_TOP[128 + 0x28];
#else
vectab[61] = &illinst;
#endif
vectab[48] = &fpfault;
}
#endif
#ifdef DRACO
if (is_draco()) {
vectab[24+1] = &DraCoIntr;
vectab[24+2] = &DraCoLev2intr;
vectab[24+3] = &DraCoIntr;
vectab[24+4] = &DraCoIntr;
vectab[24+5] = &DraCoIntr;
vectab[24+6] = &DraCoIntr;
}
#endif
DCIS();
}
void
straytrap(pc, evec)
int pc;
u_short evec;
{
printf("unexpected trap format %x (vector offset %x) from %x\n",
evec>>12, evec & 0xFFF, pc);
/*XXX*/ panic("straytrap");
}
int *nofault;
int
badaddr(addr)
register caddr_t addr;
{
register int i;
label_t faultbuf;
#ifdef lint
i = *addr; if (i) return(0);
#endif
nofault = (int *) &faultbuf;
if (setjmp((label_t *)nofault)) {
nofault = (int *) 0;
return(1);
}
i = *(volatile short *)addr;
nofault = (int *) 0;
return(0);
}
int
badbaddr(addr)
register caddr_t addr;
{
register int i;
label_t faultbuf;
#ifdef lint
i = *addr; if (i) return(0);
#endif
nofault = (int *) &faultbuf;
if (setjmp((label_t *)nofault)) {
nofault = (int *) 0;
return(1);
}
i = *(volatile char *)addr;
nofault = (int *) 0;
return(0);
}
static void
netintr()
{
#ifdef INET
#if NETHER > 0
if (netisr & (1 << NETISR_ARP)) {
netisr &= ~(1 << NETISR_ARP);
arpintr();
}
#endif
if (netisr & (1 << NETISR_IP)) {
netisr &= ~(1 << NETISR_IP);
ipintr();
}
#endif
#ifdef NS
if (netisr & (1 << NETISR_NS)) {
netisr &= ~(1 << NETISR_NS);
nsintr();
}
#endif
#ifdef ISO
if (netisr & (1 << NETISR_ISO)) {
netisr &= ~(1 << NETISR_ISO);
clnlintr();
}
#endif
#if NPPP > 0
if (netisr & (1 << NETISR_PPP)) {
netisr &= ~(1 << NETISR_PPP);
pppintr();
}
#endif
}
/*
* this is a handy package to have asynchronously executed
* function calls executed at very low interrupt priority.
* Example for use is keyboard repeat, where the repeat
* handler running at splclock() triggers such a (hardware
* aided) software interrupt.
* Note: the installed functions are currently called in a
* LIFO fashion, might want to change this to FIFO
* later.
*/
struct si_callback {
struct si_callback *next;
void (*function) __P((void *rock1, void *rock2));
void *rock1, *rock2;
};
static struct si_callback *si_callbacks;
static struct si_callback *si_free;
#ifdef DIAGNOSTIC
static int ncb; /* number of callback blocks allocated */
static int ncbd; /* number of callback blocks dynamically allocated */
#endif
void
alloc_sicallback()
{
struct si_callback *si;
int s;
si = (struct si_callback *)malloc(sizeof(*si), M_TEMP, M_NOWAIT);
if (si == NULL)
return;
s = splhigh();
si->next = si_free;
si_free = si;
splx(s);
#ifdef DIAGNOSTIC
++ncb;
#endif
}
void
add_sicallback (function, rock1, rock2)
void (*function) __P((void *rock1, void *rock2));
void *rock1, *rock2;
{
struct si_callback *si;
int s;
/*
* this function may be called from high-priority interrupt handlers.
* We may NOT block for memory-allocation in here!.
*/
s = splhigh();
si = si_free;
if (si != NULL)
si_free = si->next;
splx(s);
if (si == NULL) {
si = (struct si_callback *)malloc(sizeof(*si), M_TEMP, M_NOWAIT);
#ifdef DIAGNOSTIC
if (si)
++ncbd; /* count # dynamically allocated */
#endif
if (!si)
return;
}
si->function = function;
si->rock1 = rock1;
si->rock2 = rock2;
s = splhigh();
si->next = si_callbacks;
si_callbacks = si;
splx(s);
/*
* Cause a software interrupt (spl1). This interrupt might
* happen immediately, or after returning to a safe enough level.
*/
setsoftcback();
}
void
rem_sicallback(function)
void (*function) __P((void *rock1, void *rock2));
{
struct si_callback *si, *psi, *nsi;
int s;
s = splhigh();
for (psi = 0, si = si_callbacks; si; ) {
nsi = si->next;
if (si->function != function)
psi = si;
else {
/* free(si, M_TEMP); */
si->next = si_free;
si_free = si;
if (psi)
psi->next = nsi;
else
si_callbacks = nsi;
}
si = nsi;
}
splx(s);
}
/* purge the list */
static void
call_sicallbacks()
{
struct si_callback *si;
int s;
void *rock1, *rock2;
void (*function) __P((void *, void *));
do {
s = splhigh ();
if ((si = si_callbacks) != 0)
si_callbacks = si->next;
splx(s);
if (si) {
function = si->function;
rock1 = si->rock1;
rock2 = si->rock2;
/* si->function(si->rock1, si->rock2); */
/* free(si, M_TEMP); */
s = splhigh ();
si->next = si_free;
si_free = si;
splx(s);
function (rock1, rock2);
}
} while (si);
#ifdef DIAGNOSTIC
if (ncbd) {
ncb += ncbd;
printf ("call_sicallback: %d more dynamic structures %d total\n",
ncbd, ncb);
ncbd = 0;
}
#endif
}
struct isr *isr_ports;
#ifdef DRACO
struct isr *isr_slot3;
#endif
struct isr *isr_exter;
void
add_isr(isr)
struct isr *isr;
{
struct isr **p, *q;
#ifdef DRACO
switch (isr->isr_ipl) {
case 2:
p = &isr_ports;
break;
case 3:
p = &isr_slot3;
break;
default: /* was case 6:; make gcc -Wall quiet */
p = &isr_exter;
break;
}
#else
p = isr->isr_ipl == 2 ? &isr_ports : &isr_exter;
#endif
while ((q = *p) != NULL)
p = &q->isr_forw;
isr->isr_forw = NULL;
*p = isr;
/* enable interrupt */
#ifdef DRACO
if (is_draco())
*draco_intena |= isr->isr_ipl == 6 ?
DRIRQ_INT6 : DRIRQ_INT2;
else
#endif
custom.intena = isr->isr_ipl == 2 ?
INTF_SETCLR | INTF_PORTS :
INTF_SETCLR | INTF_EXTER;
}
void
remove_isr(isr)
struct isr *isr;
{
struct isr **p, *q;
#ifdef DRACO
switch (isr->isr_ipl) {
case 2:
p = &isr_ports;
break;
case 3:
p = &isr_slot3;
break;
default: /* XXX to make gcc -Wall quiet, was 6: */
p = &isr_exter;
break;
}
#else
p = isr->isr_ipl == 6 ? &isr_exter : &isr_ports;
#endif
while ((q = *p) != NULL && q != isr)
p = &q->isr_forw;
if (q)
*p = q->isr_forw;
else
panic("remove_isr: handler not registered");
/* disable interrupt if no more handlers */
#ifdef DRACO
switch (isr->isr_ipl) {
case 2:
p = &isr_ports;
break;
case 3:
p = &isr_slot3;
break;
case 6:
p = &isr_exter;
break;
}
#else
p = isr->isr_ipl == 6 ? &isr_exter : &isr_ports;
#endif
if (*p == NULL)
#ifdef DRACO
if (is_draco())
*draco_intena &= isr->isr_ipl == 6 ?
~DRIRQ_INT6 : ~DRIRQ_INT2;
else
#endif
custom.intena = isr->isr_ipl == 6 ?
INTF_EXTER : INTF_PORTS;
}
void
intrhand(sr)
int sr;
{
register unsigned int ipl;
register unsigned short ireq;
register struct isr **p, *q;
ipl = (sr >> 8) & 7;
#ifdef REALLYDEBUG
printf("intrhand: got int. %d\n", ipl);
#endif
#ifdef DRACO
if (is_draco())
ireq = ((ipl == 1) && (*draco_intfrc & DRIRQ_SOFT) ?
INTF_SOFTINT : 0);
else
#endif
ireq = custom.intreqr;
switch (ipl) {
case 1:
#ifdef DRACO
if (is_draco() && (draco_ioct->io_status & DRSTAT_KBDRECV))
drkbdintr();
#endif
if (ireq & INTF_TBE) {
#if NSER > 0
ser_outintr();
#else
custom.intreq = INTF_TBE;
#endif
}
if (ireq & INTF_DSKBLK) {
#if NFD > 0
fdintr(0);
#endif
custom.intreq = INTF_DSKBLK;
}
if (ireq & INTF_SOFTINT) {
unsigned char ssir_active;
int s;
/*
* first clear the softint-bit
* then process all classes of softints.
* this order is dicated by the nature of
* software interrupts. The other order
* allows software interrupts to be missed.
* Also copy and clear ssir to prevent
* interrupt loss.
*/
clrsoftint();
s = splhigh();
ssir_active = ssir;
siroff(SIR_NET | SIR_CLOCK | SIR_CBACK);
splx(s);
if (ssir_active & SIR_NET) {
#ifdef REALLYDEBUG
printf("calling netintr\n");
#endif
cnt.v_soft++;
netintr();
}
if (ssir_active & SIR_CLOCK) {
#ifdef REALLYDEBUG
printf("calling softclock\n");
#endif
cnt.v_soft++;
/* XXXX softclock(&frame.f_stackadj); */
softclock();
}
if (ssir_active & SIR_CBACK) {
#ifdef REALLYDEBUG
printf("calling softcallbacks\n");
#endif
cnt.v_soft++;
call_sicallbacks();
}
}
break;
case 2:
p = &isr_ports;
while ((q = *p) != NULL) {
if ((q->isr_intr)(q->isr_arg))
break;
p = &q->isr_forw;
}
if (q == NULL)
ciaa_intr ();
#ifdef DRACO
if (is_draco())
*draco_intpen &= ~DRIRQ_INT2;
else
#endif
custom.intreq = INTF_PORTS;
break;
case 3:
/* VBL */
if (ireq & INTF_BLIT)
blitter_handler();
if (ireq & INTF_COPER)
copper_handler();
if (ireq & INTF_VERTB)
vbl_handler();
break;
#if 0
/* now dealt with in locore.s for speed reasons */
case 5:
/* check RS232 RBF */
serintr (0);
custom.intreq = INTF_DSKSYNC;
break;
#endif
case 4:
#ifdef DRACO
#include "drsc.h"
if (is_draco())
#if NDRSC > 0
drsc_handler();
#else
*draco_intpen &= ~DRIRQ_SCSI;
#endif
else
#endif
audio_handler();
break;
default:
printf("intrhand: unexpected sr 0x%x, intreq = 0x%x\n",
sr, ireq);
break;
}
#ifdef REALLYDEBUG
printf("intrhand: leaving.\n");
#endif
}
#if defined(DEBUG) && !defined(PANICBUTTON)
#define PANICBUTTON
#endif
#ifdef PANICBUTTON
int panicbutton = 1; /* non-zero if panic buttons are enabled */
int crashandburn = 0;
int candbdelay = 50; /* give em half a second */
void candbtimer __P((void));
void
candbtimer()
{
crashandburn = 0;
}
#endif
#if 0
/*
* Level 7 interrupts can be caused by the keyboard or parity errors.
*/
nmihand(frame)
struct frame frame;
{
if (kbdnmi()) {
#ifdef PANICBUTTON
static int innmihand = 0;
/*
* Attempt to reduce the window of vulnerability for recursive
* NMIs (e.g. someone holding down the keyboard reset button).
*/
if (innmihand == 0) {
innmihand = 1;
printf("Got a keyboard NMI\n");
innmihand = 0;
}
if (panicbutton) {
if (crashandburn) {
crashandburn = 0;
panic(panicstr ?
"forced crash, nosync" : "forced crash");
}
crashandburn++;
timeout(candbtimer, (caddr_t)0, candbdelay);
}
#endif
return;
}
if (parityerror(&frame))
return;
/* panic?? */
printf("unexpected level 7 interrupt ignored\n");
}
#endif
void
regdump(fp, sbytes)
struct frame *fp; /* must not be register */
int sbytes;
{
static int doingdump = 0;
register int i;
int s;
if (doingdump)
return;
s = splhigh();
doingdump = 1;
printf("pid = %d, pc = %s, ", curproc ? curproc->p_pid : 0,
hexstr(fp->f_pc, 8));
printf("ps = %s, ", hexstr(fp->f_sr, 4));
printf("sfc = %s, ", hexstr(getsfc(), 4));
printf("dfc = %s\n", hexstr(getdfc(), 4));
printf("Registers:\n ");
for (i = 0; i < 8; i++)
printf(" %d", i);
printf("\ndreg:");
for (i = 0; i < 8; i++)
printf(" %s", hexstr(fp->f_regs[i], 8));
printf("\nareg:");
for (i = 0; i < 8; i++)
printf(" %s", hexstr(fp->f_regs[i+8], 8));
if (sbytes > 0) {
if (fp->f_sr & PSL_S) {
printf("\n\nKernel stack (%s):",
hexstr((int)(((int *)&fp)-1), 8));
dumpmem(((int *)&fp)-1, sbytes, 0);
} else {
printf("\n\nUser stack (%s):", hexstr(fp->f_regs[SP], 8));
dumpmem((int *)fp->f_regs[SP], sbytes, 1);
}
}
doingdump = 0;
splx(s);
}
extern u_int proc0paddr;
#define KSADDR ((int *)((curproc ? (u_int)curproc->p_addr : proc0paddr) + USPACE - NBPG))
static void
dumpmem(ptr, sz, ustack)
register int *ptr;
int sz, ustack;
{
register int i, val;
for (i = 0; i < sz; i++) {
if ((i & 7) == 0)
printf("\n%s: ", hexstr((int)ptr, 6));
else
printf(" ");
if (ustack == 1) {
if ((val = fuword(ptr++)) == -1)
break;
} else {
if (ustack == 0 &&
(ptr < KSADDR || ptr > KSADDR+(NBPG/4-1)))
break;
val = *ptr++;
}
printf("%s", hexstr(val, 8));
}
printf("\n");
}
static char *
hexstr(val, len)
register int val;
int len;
{
static char nbuf[9];
register int x, i;
if (len > 8)
return("");
nbuf[len] = '\0';
for (i = len-1; i >= 0; --i) {
x = val & 0xF;
if (x > 9)
nbuf[i] = x - 10 + 'A';
else
nbuf[i] = x + '0';
val >>= 4;
}
return(nbuf);
}
/*
* should only get here, if no standard executable. This can currently
* only mean, we're reading an old ZMAGIC file without MID, but since Amiga
* ZMAGIC always worked the `right' way (;-)) just ignore the missing
* MID and proceed to new zmagic code ;-)
*/
int
cpu_exec_aout_makecmds(p, epp)
struct proc *p;
struct exec_package *epp;
{
int error = ENOEXEC;
#ifdef COMPAT_NOMID
struct exec *execp = epp->ep_hdr;
#endif
#ifdef COMPAT_NOMID
if (!((execp->a_midmag >> 16) & 0x0fff)
&& execp->a_midmag == ZMAGIC)
return(exec_aout_prep_zmagic(p, epp));
#endif
#ifdef COMPAT_SUNOS
{
extern sunos_exec_aout_makecmds
__P((struct proc *, struct exec_package *));
if ((error = sunos_exec_aout_makecmds(p, epp)) == 0)
return(0);
}
#endif
return(error);
}
![[BACK]](/icons/back.gif){kind=icon}
Return to machdep.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [cvs.NetBSD.org] / src / sys / arch / amiga / amiga