Commit Graph

210 Commits

Author SHA1 Message Date
jonathan 4139356a98 Copy the pmax locore.S code into the arch/mips hierarchy and split
it into three pieces:

 * locore.S, which contains generic mips locore code,
   applicable for both r2000/r3000 and r4000s (in 32-bit mode).

 * locore_r2000.S, which contains r2000/r3000 (MIPS-I) versions
   of the locore functions that need mips-generation-specific
   instructions or handling.
 * locore_r4000.S, which contains r4000/r4400/r4600 (MIPS-III?) versions
   of the locore functions that need mips-generation-specific
   instructions or handling.

Much of the code in locore_r4000.S is derived from Per Fogelstrom's Pica port.
locore.S still contains some pmax-specific DMA-buffer copy functions.
1996-05-21 00:20:40 +00:00
jonathan e704a8e1e9 * Move the declarations of mips locore functions from the pmax tree
to the mips tree.
* Add declarations of functions used by vm_machdep.c.
* Add declarations of functions printed by name in stack tracebacks.
* Add declarations of functions used by the model-independnet mips machdep.c
  code.
1996-05-20 23:38:26 +00:00
jonathan 7666d5b36b Check that either CPU_R3000 or CPU_R4000 is defined. Fix the r3k/r2k
symbolic lookup of the CPU-level specific locore entry points to use the
r2k, not the r4k, labels.

Include header files to get prototyped declarations of ipintr() and arpintr().
Remove unused variables and parenthesize assignments in if () expressions.

Gcc warns of a possible && vs || operator-precedence bug in the network
softint dispatch code, which needs more thought.
1996-05-20 23:24:00 +00:00
jonathan baa655bc0f Update the DECstation stack-traceback pretty-printer, KN01 interrupt handler,
and IOCTL ASIC dma-buffer-reservation code to use the reorganized am7990
preprocessor tokens and function names.
1996-05-19 17:58:12 +00:00
jonathan 6d5fbdfbe2 Remove common-across-all-MIPS-cpu definitions (e.g., user-level-visible
page/segment size definitions and macros) from pmax/include/param.h,
and move them to mips/include/mips_param.h.
1996-05-19 17:52:18 +00:00
jonathan e2a698293c Add local declarations for locore functions. Fix pagemove() return
type to be void. Add explicit "int" return types.
Fix format/argument mismatches for vm_offset_t's in diagnostic messages.
1996-05-19 15:55:31 +00:00
jonathan a67936cc04 Declare mips_elf_makecmds(), not pmax_elf_makecmds(). 1996-05-19 04:15:37 +00:00
jonathan bce6b88e9a Include <machine/locore.h>, to force all MIPS cpu-model specific
locore calls to go via a locore-entry jumptable.

Cast the (int) arguments  to MachTLBUpdateEntry() to avoid
warnings.  Variables TLB entries are still type-punned as either structs
or ints, without any regard, when the pmax-specific VM code passes
them as arguments to functions.
1996-05-19 02:00:58 +00:00
jonathan 6bb09a3781 Include <machine/locore.h>, to force all MIPS cpu-model specific
locore calls to go via a locore-entry jumptable.

Use mips_btop(), mips_round_page, mips_trunc_seg() instead
of pmax_btop(), pmax_round_page, pmax_trunc_seg().

Add Per's software-readonly-bit mechanism, since the r2000 and r4000
hardware TLB entries are  very different, and the r4k has no space for
software bits in TLB entries.  That is, this pmap code still won't work
on r4000 machines. Some other solution, like another jump table for
clients of the  pmap code, is necessary.
1996-05-19 01:58:35 +00:00
jonathan b4c4b28e43 Include <machine/locore.h>, to force all MIPS cpu-model specific
locore calls to go via a locore-entry jumptable.

Declare  r2000- and r4000-specific exception-handler functions, to which
trap() and interrupt() dispatch exceptions. Initialize r2000- and r4000-
specific exception-handler vectors, when CPU_R4000 and CPU_R2000 are
defined.

Update the stack-traceback code (partially) to understand and print
the new low-level exception-handler code, via which machine exception-vectors
send exceptions to call trap() or interrupt(). This needs  more work.
1996-05-19 01:54:49 +00:00
jonathan 5a890607de Define the conventional pmax locore entry-point names to be calls through
an vector (struct) of function pointers.  Add prototype declarations for
each vector entry.
Add declarations for the r2000 (MIPS-I) and r4000 (MIPS-III) locore
versions of the relevant functions.
1996-05-19 01:32:56 +00:00
jonathan 0064a12f68 Create mips_machdep.c, which contains Mips-specific functions common
to all mips ports.

So far, this consists of code to initialize a vector, or jump-table, of
pointers to locore functions that require different definitions on different
Mips CPUs (eg., r2000/3000 and r4000); a generic wrapper for setting up
CPU-specific exception vectors; and CPU and FPU identification code.
1996-05-19 00:31:57 +00:00
jonathan 503d421a0a Add alternate "mips_r2000_<XXX>" entry points for the r2000/r3000-specific
locore functions.  The new names are used by C code to construct a jump-table,.
making it less infeasible to have a single kernel image work on both
r3000 and r4000 systems.
1996-05-19 00:25:14 +00:00
cgd d5b0482bb9 update for changed ecoff headers. minor consistency changes for the
ecoff functions, as well.
1996-05-09 23:48:47 +00:00
cgd b10c43013d change structure member names to be in line with what various ECOFF
documentation I have calls them, and update for new definitions in
sys/exec_ecoff.h.
1996-05-09 23:46:18 +00:00
jonathan 368824e74c Fixes for -Wall -Wmissing-prototypes:
Add prototypes to (most of) src/sys/arch/pmax/pmax. (The  un-protytyped
   parts still have pending merges with the Pica port.)
   Fix splx() glitches in pmax/clock.c.
   Delete old cpu/fpu identification from pmax/autoconf.c, use r4400/r4600/idt
   aware code from Pica port, now in mips/mips/mips_machdep.c.
   Delete unused multi-CPU autoconfiguration code; NetBSD/pmax does not
   support decsystem 5800s anyway.
1996-04-10 17:38:18 +00:00
jonathan 8a1933076a Fixes for -Wall -Wmissing-prototypes:
Replace impliclty-sized types (u_long, u_short) used in
	declarations of byteorder functions witho explicitly sized types
	(u_int32_t, u_int16_t).

Avoids problems with using ntohl(foo) as (eg) an argument to printf().
1996-04-09 20:56:45 +00:00
jonathan 08a45c0a18 Fixes for -Wall -Wmissing-prototypes:
Do not define __BDEVSW_DUMP_OLD_TYPE, as it breaks prototyping
	of device dump functions, and should be port-dependent in any case.
The pmax 4.4bsd/pmax-derived drivers are being fixed, and the pica port
uses the MI scsi drivers already.
1996-04-09 20:54:08 +00:00
jonathan d115f89b5f Update arch/pmax/pmax/genassym.c to compile with -Wall: use offsetof().
Move to mips/pmax/genassym.c, as (most of) the assembler locore code is
being merged into a generic-MIPS locore.

Remove the redundant pmax/pmax/genassym.c.
1996-04-07 14:27:00 +00:00
jonathan 5163f64c0f merge mips and pica locore.S, pass 0:
* cut-and-paste all the code for both r2000 (MIPS-I) and r4000 (MIPS-III)
      into both the pica and pmax locore.S.

    * Change the names of the small segments of vector code that are
      bcopied to the machine vector locations, to avoid clashing.
      Get rid of the Sprite MachXXX names for the vector code, and
      use use mips_r2000_xxx and mips_r4000_xxx instead.

      Update the names used in the vector-copying code and trap handlers
      to match.

    * Most of the rest of the pica locore.S was copied from the pmax
      locore.S, and then edited to work on an r4000.  The names of
      functions and of manifest constants stayed the same, although
      both assmbler code and constant values changed.
      cut-and-paste such code into contiguous blocks protected by
      #if / #endif.  Much of the cache and trap-handling code
      needs r3000-only register fields, on the r3000, and r4000-only
      insns and registers on the r4000.

   * change the pmax r2000 exception-handling code to extract a trap
     code with the user/kernel bit at 0x20 rather than 0x10.
     (r2000s have 4-bit execption codes, r4000s have 5-bit.)
     Use the a 16 from-user-space + 16-from-kernel space jump table,
     just like on the r4000 pica port.

   * add NOPs to the common code where required by the r4000 pipeline
     constraints.
   * add _C_LABEL() macros to the r4000 locore.

Comitted to provide a snapshot for others to test, and work on a cleaner merge.
1996-03-31 03:38:21 +00:00
jonathan 34ab2734da Resolve all differences between the Pica and pmax versions of machConst.h:
* add "MIPS_3k_" for the MIPS-I r[23]000-specific register definitions.
    * add "MIPS_4k_" for the MIPS-II/III r4000-specific register definitions.
    * add #defines that provide the old values for locore and user
      code, so the existing code continues  to compile.

Regression-tested against the  old headers by grepping for #define's,
editing out the defined symbols, and preprocessing with both the previous
machConst.h headers and this version.

Some unused symbols (CPU and FPU must-be-zero constants) are no longer defined.
Pica interrupt masks are now constant expressions instead of constant
values.

TODO:
    * factor out the common #defines into src/sys/arch/mips.
    * Get rid of the Sprite coding-style names (MACH_xxx).
    * Separate out the r3k/r4k differences from the Pica/pmax differences.
    * Figure out how to have a run-time choice of r3k vs. r4k support,
     instead of a compile-time choice.
1996-03-28 11:34:05 +00:00
jonathan bfa1f425bc Add mips/mips/mem.c and mips/mips/process_machdep.c 1996-03-26 11:45:59 +00:00
jonathan 97f32908b1 Split trap handler into mips-generic and port-specific functions:
* Delete pmax-specific functions and declarations from trap.c

* Delete mips-geeneric functions and declaratinos from pmax_trap.c

* Rename the function pointer used to handle hardware interrupts to
 "mips_hardware_intr".  Define it in trap.c. Change references elsewhere,
  including machdep.c.

Verified to boot on a 5000/200.
1996-03-25 06:44:17 +00:00
jonathan 458024d39d Random additions from the Pica r4k port:
* Add spl4() and spl5() functions from the Pica port.
* Add MachFPTrap() as an alternate entry point for MachFPInterrupt.
  The r4k reports floating-point execptions as a trap, not an interrupt,
  and the Pica port uses the name MachFPTrap().
* Add nops to the Mach_spl?() functions and MachFPInterrupt, as required
   for the r4k port.
Commit "floppy"  interrupt counter for vmstat -i.
1996-03-25 06:40:39 +00:00
jonathan 522f8705a1 Copy src/sys/arch/pmax/pmax/trap.c to pmax_trap.c.
trap.c will contain the port-independent mips trap-handling functions.
pmax_trap.h will contain the pmax-specific interrupt handlers.
1996-03-25 05:55:30 +00:00
jonathan e920e8f829 Force reporting of memory errors for the 3MAX (aka kn02 aka 5000/200) to
always be eight digits.
Copy the kn02 memory-interrupt reporting function to the kn03 (5k/240)
memory-error handler, since the 3MAXPLUS seems to use the same ECC hardware
as the 3MAX.
1996-03-25 03:18:15 +00:00
jonathan 3b5a818c4e Rename from pmax/include/machAsmDefs.h to mips/include/asm.h.
Update the include-idempotency preprocessor token to match.

References to machAsmDefs in vendor (sprite, 4.4bsd) headers left unchanged,
for historical accuracy.
1996-03-25 02:50:50 +00:00
jonathan 71b212b66a Change pmax T_USER bit (software only) to be 0x20, the same as the
Pica port. (The r4000 CPU used in the pica has more hardware execption types.)
1996-03-24 08:12:53 +00:00
jonathan 893a0b508b fix case typo: CLKF_BASEPRI_R4k to _R4K 1996-03-23 20:28:19 +00:00
jonathan cd58cb9caa Factor out r3000 versus r4000 differences (CLKF_USERMODE() and CLKF_BASEPRI()),
provide r3k and r4k versions of each, and move to sys/arch/mips/include.

Note in comments where each mips-based port should provide
definitions in its own cpu.h after including this file.
1996-03-23 20:21:49 +00:00
jonathan 78aac1c7b9 Merge in additions of missing MIPS-I opcodes, and r4000-in-32-bit mode
opcodes from the Pica port.   Per Fogelstrom claims the latter are all
supposedly  MIPS-II (r6000) instructions, rather than MIPS-III (R4000),
but we haven't checked to be sure.  Are LL/SC really in MIPS-II?
CVS:: ----------------------------------------------------------------------
1996-03-23 18:49:29 +00:00
jonathan bfb10e5bdf Rename "pmax_elf_makecmds()" to "mips_elf_makecmds()".x 1996-03-23 04:59:00 +00:00
jonathan 69a70ec129 Merge in changes from the Pica port.
Still needs more thought for single-stepping and process_write_regs().
1996-03-20 01:30:49 +00:00
jonathan e3bc270a69 Change "XXX_pmax" to "XXX_mips" in preparation for merging with
Pica reloc.h.
1996-03-19 22:18:45 +00:00
jonathan f8342fcf97 Remove #ifdef LANGUAGE_C - protected definition of "struct reg".
(It was a duplicate of the real definition reg.h and was never used.)
1996-03-19 15:20:39 +00:00
jonathan d2c42783a3 Add trap definitions added for the r4000 port.
Note: T_USER is different in the pmax and pica ports!
1996-03-19 04:34:57 +00:00
jonathan ac7c6304db Add eight 32-bit (XXX) words of reserved space to struct sigcontext,
for binary compatibilty with the pica port.
1996-03-19 04:22:04 +00:00
jonathan ad4d94c4f3 Change "pmax_xxx" macros to "mips_xxx" macros, in preparation
for moving to src/sys/arch/mips/include/pmap.h.
1996-03-19 04:15:15 +00:00
jonathan 648169b854 Kernel config file for source code shared by mips-based NetBSD ports. 1996-03-19 03:26:29 +00:00
jonathan dcb272ef6e Remove pmax-specific CLK_TICK to prepare for moving to sys/arch/mips. 1996-03-19 02:45:48 +00:00
jonathan b495cef581 Add additional mips CPU and FPU ids from Pica port:
IDT r3081 family, r4600, MIPS-IV architecture, others.
1996-03-19 02:42:28 +00:00
jonathan 1cc17fc971 Change "pmax" -> "mips" before moving to sys/arch/mips/include. 1996-03-19 02:12:05 +00:00
jonathan c29eb3ea76 NetBSD's ieee FP definitions for the pmax are valid for other mips cpus;
change preprocessor XXX_PMAX_YYY #defines to XXX_MIPS_YYY.
1996-03-18 22:40:21 +00:00
jonathan ffd8d4cdc7 Additional fixes to complete the NetBSD/1.1B config changes:
Update the kn01 (3100 aka pmax) interrupt handler to use XXX_cd instead
of XXXcd.
1996-03-17 22:12:13 +00:00
jtc 2ce5f1478b Add _BSD_WINT_T_ definition so we can handle wint_t type added in NA1. 1996-03-16 01:31:45 +00:00
jonathan dc6fdf6cdc First commit of Per Fogelstrom's port to the Acer pica r4400/isa machine. 1996-03-13 04:58:04 +00:00
jonathan ff27dbbcf9 Revert pmax stdarg.h and varargs.h to versions from 1995-11-13. Those
versions work correctly; at some point between then and the immediately
preceding revisions, the "stylistic" changes to one (or both) stdarg.h
and varargs.h broke passing doubles to printf().
1996-02-26 23:29:05 +00:00
jonathan bf52fa8269 The prototyping `fixes' broke vmapbuf() and vunmapbuf(), due to a "sz"
parameter parameters shadowing locals.  Replace vmapbuf() and vunmapbuf()
with the Alpha-port versions, which are cleaner (use round_page(),
trunc_page(), etc.)
1996-02-06 00:31:51 +00:00
jonathan cb7e6f2e0f Change last argument of ktrsysret() call: pass rval[0], not rval, as
ktrsysret() expects.   Tracing of  rval[1] remains an open problem.
1996-02-06 00:13:04 +00:00
christos 2c8314f73c vm prototype changes 1996-02-05 02:06:38 +00:00
jonathan 1f780158bb Redo the locore interrupt counters reported by vmstat -i:
* add a new enum decstation_intr_t to trap.c, naming each instrumented
  interrupt symbolically, and used to index into intrcnt[].  Change the
  model-specific interrupt handlers to use the decstation_intr_t when
  updating interrupt counters.
* add instrumentation to the kmin and maxine interrupt handlers.
* fix a bug that counted each hardclock interrupts on the kn02 twice.

The hardcoded mapping from locore names to units is gross; but these
counters will hopefully be useful in identifying interrupt hot-spots
and PPP problems on the 3MIN.
1996-02-04 20:14:17 +00:00
mycroft 9db20bf150 Don't define _KERNEL here. 1996-02-02 19:42:08 +00:00
mycroft 9d9a70a5a2 Fix #includes. 1996-02-02 18:05:36 +00:00
mycroft 88e512b693 LOCORE -> _LOCORE 1996-02-01 22:28:24 +00:00
jonathan e229c8d175 Resolve pmax and alpha IOCTL asic driver differences, pass 1:
Rename the ioctl asic register and slot macros from ASIC_<xxx> to
IOASIC_<xxx>, to be compatible with the machine-indpendent names in
sys/dev/tc/ioasicvar.h.  The pmax code still uses
sys/arch/pmax/pmax/asic.h, as some of the registers and offsets
defined there are not yet defined in sys/dev/tc/ioasicvar.h.

Rename the ioctl asic base-address pointer from `asic_base' to `ioasic_base'.
1996-01-31 08:46:42 +00:00
jonathan 5ea2ec2357 Re-write Decstation turbochannel autoconfiguration code to use the machine-
independent TC support in sys/dev/tc/tc.c and sys/dev/tc/tcvar.h:
  * Change the tc autoconfiguration tables to use a struct tc_attach_args
    instead of the ad-hoc structure.
  * Change all pmax device drivers to use a `struct confargs' that's
    assignment-compatible with  sys/dev/tc/tcvar.h `struct tcdev_attach_args'.
    Devices that can be present on a TC or as ioctl asic/mainbus builtins
    use  the same `struct confargs'.
  * Eliminate the `BUS_CVTADDR()' macros which the pmax port inherited from
    an old, now-obsolete sys/arch/alpha snapshot.

  * Update the comments and debugging code in interrupt handlers to
    be consistent with the machine-independent TC support.

Other commits that overlap the same source files include: re-enabling
clock-tick interrupts earlier, and counting hardclock ticks for vmstat -i.
1996-01-29 22:52:15 +00:00
jonathan df51f8395d Change MachEmulateBranch() to be able to read an insn from user space.
Kernel-debugger breakpoints in user space, or FP insns that cause
underflow in a delay slot, should now work properly. Single-stepping
of arbitrary user processes, from user level, should be added.
1995-12-28 16:22:41 +00:00
mycroft cd8fe86bcb Make the type of __builtin_va_list a long. 1995-12-26 01:16:24 +00:00
mycroft 0c00214737 Use __builtin_va_alist. 1995-12-26 00:19:09 +00:00
mycroft fa887628d8 Stylistic changes. 1995-12-25 23:15:31 +00:00
mycroft d1de691efb Stylistic changes. 1995-12-25 22:22:02 +00:00
mycroft 0199e002ad Update for GCC 2.7, and fix bugs. 1995-12-25 21:41:08 +00:00
jonathan 2852152043 Reserve a number in the machine-dependent range for PT_STEP, in
case the kernel-debugger implementation of single-stepping ever works
with user code.
1995-12-21 09:28:36 +00:00
jonathan c0f958f6be Add support for ptrace PT_GETREGS and PT_SETREGS for NetBSD/pmax:
* define PT_GETREGS and PT_SETREGS in pmax/include/ptrace.h
 * Flesh out the stubs in pmax/pmax/process_machdep.c to handle
   those requests.
 * Now that "struct reg" is actually used, remove the bogus
   #ifdef LANGUAGE_C around its definition, and redo pmax/include/reg.h
   so that the definitions needed by locore.S are in a separate file,
   pmax/include/regnum.h.
 * update locore.S to match.
1995-12-20 02:00:23 +00:00
jonathan 00b821d6c2 Change mips __warn_references() macro to use the ELF warning features
in binutils 2.6 and (patched) gcc 2.7.2. Only works with gcc in ANSI C
mode, for now.
1995-12-15 01:17:04 +00:00
mycroft 292120bf63 Define __FORK_BRAINDAMAGE. 1995-12-09 04:41:41 +00:00
jtc 0cd793449e merge in changes from 1.1 release branch 1995-11-30 00:56:23 +00:00
jonathan ae1b64d888 Fix btoc()/ctob() typo in reading physical memory that stopped ps
from reading process argument lists.
Allow kernel-virtual memory reads to read the message buffer, since
dmesg needs it.
1995-09-29 21:53:29 +00:00
jonathan b543578236 Add a missing "nop" in a delay slot in the floating-point exception
handler.  Gradual underflow and fp emulation now work correctly.
Proper denorms also fix strtod() inaccuracies and Gcc's "enquire" program.
1995-09-28 20:02:50 +00:00
jonathan cd887a9930 Add "kvtophys()", which maps MIPS R2000 kernel-virtual addresses to physical addresses,
so they can (e.g.) be written to DMA mapping registers.
1995-09-25 20:36:23 +00:00
jonathan d1234038d4 Rename the force-all-pending-writes to memory function to wbflush().
Keep the old Mach-derived name "MachEmptyWriteBuffer()" as an alternate
entry point.
1995-09-21 23:28:31 +00:00
jonathan 0641f09bfb Include <sys/mount.h>, as the new <sys/syscallargs.h> won't compile without it. 1995-09-20 23:33:25 +00:00
thorpej 7d7396c414 Make system calls conform to a standard prototype and bring those
prototypes into scope.
1995-09-19 22:53:47 +00:00
jonathan 9a914b5b01 Rename the Decstation 2100/3100 interrupt functions from "pmax_<func>"
to "kn01_<func>", to avoid confounding a model name (PMAX) with the name of the
entire port (pmax).


Change the signature of interrupt-handlers to take a void *
(a pointer to the softc) and return an int (indicating spurious
interrupts or other conditions.)

Pass softc pointers to the scsi and ethernet kn01 (DS_PMAX)  drivers,
rather than having unit numbers wired into the base-level interrupt
handler.
1995-09-11 22:03:00 +00:00
mycroft fa13d32c41 Add splsoftnet(). 1995-08-13 00:16:08 +00:00
jonathan 6a99440efd Add prototypes for most functions. Fix typo where statements
intended to increment interrupt counters for vmstat -i (i.e., "ctr++")
on 3100s had just a single "+", and hence had no effect.
1995-08-01 06:58:57 +00:00
jonathan 4525afdaeb Add diagnostics for 5k/240 turbochannel interrupts, and clean up IOASIC clock
declarations.
1995-07-23 20:21:17 +00:00
cgd 479fb9e45b add <sys/cdefs.h> inclusions. namsspace-protect physadr, label_t
def'ns against _POSIX_SOURCE and _ANSI_SOURCE.
1995-07-06 03:39:32 +00:00
paulus 08b7596c51 Add code to interrupt to call pppintr. 1995-07-04 12:22:21 +00:00
cgd c83f9c5568 remove unused cpu_exec() definitions. moved "broken swap" markers, for
ports that still need it, to types.h.
1995-06-28 02:55:18 +00:00
cgd 1c0be437b1 define __BDEVSW_DUMP_OLD_TYPE for ports where it's true. clean up
some m68k ports inclusion of common header.
1995-06-26 05:13:37 +00:00
jtc 55fbbc705d Wrap with #ifndef _XXX_FLOAT_H_/#define _XXX_FLOAT_H_/ ... /#endif. 1995-06-20 20:45:22 +00:00
jtc 1d65cdd4ab #include <sys/cdefs.h>.
Wrap __flt_rounds() declaration with __BEGIN_DECLS/__END_DECLS.
1995-06-20 20:32:22 +00:00
mellon 1305dc32df Put parentheses around macro arguments 1995-06-16 02:07:33 +00:00
jonathan ae4eae4f63 Change reference in asm code from ``__mcount'' to ``___mcount'', to be
consistent with the (default) prepending of underscores to identifiers.

Because this reference is inside an ASM string it's too hairy to
conditionalize to support different toolchains that don't prepend underscores.
(Just don't do profiling with  such  toolchains.)
1995-05-31 00:25:06 +00:00
jtc f90f8d10aa Removing -DKERNEL, transition to _KERNEL has been completed 1995-05-16 22:24:17 +00:00
jonathan 4175c2819f Redo 3MAX+ (5k/240) interrupt enable code.
Instead of being a no-op, kn03_intr_enable() sets the sw copy of the
interrupt-enable mask *and* writes it into the IO asic intr-enable
register.  Boot code sets the sw copy (kn03_tc_imask) to something
sane (KN03_IM0, with tc option slots turned off).  Tested and works.
Interrupt code for other IOASIC machines should be redone so that
interrupts for devices are enabled by drivers, rather than by
cpu-specific boot code.  Functions common to all IOASIC machines
(PSWARN?) should be done by asic_init().

Checked in without the above changes so that 3MAX+, MAXINE and 3MIN
interrupt-(enable,handle) can converge.
1995-05-12 23:27:23 +00:00
mellon 214234c937 Fix MAXine interrupt mask routine 1995-05-05 06:48:14 +00:00
cgd 8703076975 define BROKEN_SWAP and/or cpu_swapout as appropriate. 1995-05-05 03:41:51 +00:00
mellon 3ff601e7a1 Don't conditionalize utility routines based on DEBUG flag 1995-05-05 02:45:31 +00:00
mellon c6a24163a3 Use Alpha cdefs.h 1995-05-03 06:04:54 +00:00
jonathan be2c7f3d13 If we panic inside trap(), Do a stack traceback before printing the trap log.
Also change the stack-traceback code to avoid having multiple returns
(and thus multiple stack pops) because with gcc -O2 that breaks the
heuristic that a "jr ra" preceding the PC precedes code to push the
current stack frame.  Which breaks stacktrace() before it even
traces past itself :-(.  Use a goto instead.
1995-05-02 19:51:52 +00:00
jonathan fb9f07db36 Update MIPS stack backtrace code to trace through locore functions,
traps, and interrupts  The earlier (4.4bsd) code didn't do the first two, and
got the last one wrong.  Also print some functions (e.g., trap handlers)
by name.  Add hook to use something other than printf() as the output
function, e.g,. for kernel debugging.
Tested with the `native' toolset, but not ELF format kernels.
(i.e., unwinding the $GP register is not tested.)

The stack backtrace code that interprets and unwinds stackframes is still
opaque and stylistically awkward.
1995-04-29 21:10:31 +00:00
jonathan b2c7420e5a Fix performance bug in pmax MachFlushDCache(). Old code disabled icache
and wasn't unrolled. This code runs cached and unrolled, giving an order
of magnitude improvement in some cases (e.g., DMA-capable network devices).
In use at Stanford DSG since late January 1995.
1995-04-28 23:17:51 +00:00
jonathan 026a077a5d Check in source code actually containing changes in previous log message--
fixes to turbochannel-based DECstation interrupt enabling.
(I hate network firewalls that break rsh and remote CVS.)
1995-04-28 22:50:29 +00:00
jonathan 523e8bccbc Fix hardware interrupt-mask setup in the 5k/240 (3max)+ interrupt handler.
(A similar fix needs to be applied to the 3min and xine handlers.
This fixes a long-standing problem when booting with a card that
wants to interrupt (e.g., a network interface) would have interrupts
enabled before a handler was set up.

Add interrupt-counting code to model-independent interrupt handler,
and 3max (5k/200) and 3max+ (5k/240) md handlers, for vmstat -i.
Similar changes for 3min and xine are obvious but not done.

Add  code for 5k/240 to read, and latch, the current value of the
IOASIC bus-cycle counter at each timer interrupt.  The latched
counter is needed to accurately interpolate the bus-cycle counter value
as a high-resolution clock.
1995-04-28 21:48:11 +00:00
jonathan ef8023a47b Check in changes suggested by Ralph Campbell: update variable names
to use turbochannel slot numbers, add a couple of extra slots, just
in case.
1995-04-28 03:10:41 +00:00
mellon 1992309f8b Fix a few compat code casualties 1995-04-25 19:16:43 +00:00
mellon 3eca8117f7 Fix up args to scdebug_{call,ret} 1995-04-25 05:30:14 +00:00
christos de42a28a1b - added sunos_machdep.c for sun3, atari, amiga and mac68k.
- changed machdep.c and trap.c to use struct emul.
- remove ep_setup references.
- added struct emul to all emulations.
1995-04-22 20:24:40 +00:00