Commit Graph

2011 Commits

Author SHA1 Message Date
ross a1c15a355d In PMAP_ISACTIVE(), check curproc->p_vmspace before using it; this macro
is called early in startup, long before p_vmspace is set to &vmspace0.
1999-05-31 20:49:00 +00:00
ross 4313734913 After some banging and bashing, commit Jason's new ddb traceback code. 1999-05-31 20:42:15 +00:00
ross 604d4df11e Convert to traceback-friendly temporary labels. 1999-05-31 20:40:23 +00:00
ross ffc59b8bad Be less drastic when running strip(1) on DEBUG=-g kernels. 1999-05-31 18:54:49 +00:00
ross 6b3d12f44a Calculate what sp would have been and save it in otherwise-unused
FRAME_SP slot if entering ddb.
1999-05-31 06:41:39 +00:00
ross d3df2008f1 Fix generation of locore.s dependencies. 1999-05-31 02:46:17 +00:00
thorpej a2d06a4721 Generally update the comment above the vmapbuf() implementations. 1999-05-26 22:07:36 +00:00
thorpej 2580d306ab Change the vm_map's "entries_pageable" member to a r/o flags member, which
has PAGEABLE and INTRSAFE flags.  PAGEABLE now really means "pageable",
not "allocate vm_map_entry's from non-static pool", so update all map
creations to reflect that.  INTRSAFE maps are maps that are used in
interrupt context (e.g. kmem_map, mb_map), and thus use the static
map entry pool (XXX as does kernel_map, for now).  This will eventually
change now these maps are locked, as well.
1999-05-26 19:16:28 +00:00
cgd 5dd4815be9 uh, get the port name consistently correct (NetBSD/alpha, not NetBSD/Alpha) 1999-05-26 06:22:03 +00:00
thorpej 32de988d29 No longer need to pmap_emulate_reference() in cpu_fork() or cpu_swapin(),
since uvm_fault_wire() does the right thing with access_type.
1999-05-26 00:37:40 +00:00
thorpej 5832084eaf bus_dmamem_map() maps DMA safe memory, which is usually one or more
managed pages, into KVA space.  Since the pages are managed, we should
use pmap_enter(), not pmap_kenter_pa().

Also, when entering the mappings, enter with an access_type of
VM_PROT_READ | VM_PROT_WRITE.  We do this for a couple of reasons:

	(1) On systems that have H/W mod/ref attributes, the hardware
	    may not be able to track mod/ref done by a bus master.

	(2) On systems that have to do mod/ref emulation, this prevents
	    a mod/ref page fault from potentially happening while in an
	    interrupt context, which can be problematic.

This latter change is fairly important if we ever want to be able to
transfer DMA-safe memory pages to anonymous memory objects; we will need
to know that the pages are modified, or else data could be lost!

Note that while the pages are unowned (i.e. "just DMA-safe memory pages"),
they won't consume any swap resources, as the mappings are wired, and
the pages aren't on the active or inactive queues.
1999-05-25 23:14:03 +00:00
thorpej 986c3eca39 Fix some major locking protocol issues related to pmap_kremove() having
to deal with PG_PVLIST mappings; it no longer has to.  Add some DIAGNOSTIC
checks for inconsistent use of pmap_enter/pmap_kremove.
1999-05-25 20:32:29 +00:00
thorpej 5dec34efed The kernel pmap can be accessed (and locked!) while in an interrupt
context, so we must block interrupts which may cause memory allocation
before asserting the kernel pmap's lock.  Put this all in PMAP_LOCK()
and PMAP_UNLOCK() macros to make it easier.
1999-05-24 20:11:58 +00:00
thorpej 8c2d5c6fd3 Let the caller decide what to do if pmap_physpage_alloc() fails. 1999-05-24 01:35:54 +00:00
thorpej c1eb28c237 Make the list of all pmaps LRU-ordered, and update a comment regarding
locking.
1999-05-23 22:37:02 +00:00
thorpej 2102d5a17e Save ourselves some work in some pv list traversal functions; keep a pointer
to the PTE that maps the page in the pv_entry so that we don't have to
compute it from the pmap/va.
1999-05-23 17:49:07 +00:00
thorpej 5d48eed96a Implement pv_entry stealing for the case when a pool page cannot be
allocated for one.
1999-05-23 16:54:43 +00:00
thorpej 66324de865 Use the pool allocator for pv_entry structures. Set a (patchable/config'able)
low water mark on the pool, so we have some chance of crawling along in
extreme memory shortages.
1999-05-21 23:07:59 +00:00
thorpej a07ba7d1c1 Update the calls to allocsys(). 1999-05-21 00:09:09 +00:00
lukem e4a87aa1a9 * convert to using MI allocsys(). most ports were using an MD allocsys(),
although a couple still used the old pre-4.4-lite (?) mechanism.
* use format_bytes() to format the various printf()s that print out memory sizes
1999-05-20 08:21:42 +00:00
thorpej f98d358a1f Rework layer 2 protocol input routines. Instead of calling e.g. ether_input()
directly, call the function pointer (*if_input)(ifp, m).  The input routine
expects the packet header to be at the head of the packet, and will adjust
as necessary.  Privatize the layer 2 input and output routines, allowing
*_ifattach() to set them up as appropriate.
1999-05-18 23:52:51 +00:00
thorpej 9410ed17c1 Count new resident and wired pages in pmap_kenter*(). 1999-05-17 16:22:57 +00:00
thorpej 7e68ddd393 Update the comments above vmapbuf() and vunmapbuf() to reflect reality. 1999-05-16 22:24:16 +00:00
thorpej c10a926030 Allow the caller to specify a stack for the child process. If NULL,
the child inherits the stack pointer from the parent (traditional
behavior).  Like the signal stack, the stack area is secified as
a low address and a size; machine-dependent code accounts for stack
direction.

This is required for clone(2).
1999-05-13 21:58:32 +00:00
cgd e9da918f1b add some more bits, mostly stubs 1999-05-11 00:04:52 +00:00
cgd b0f5f854e4 have to take care to have a valid SP value in the unaligned fixup and
opdec (emulation) handlers.
1999-05-10 01:27:28 +00:00
cgd 9b9842a28b handle unaligned ldwu/stw instructions. While there, fix a bug in the
unaligned access handler and clean it up some.  Add support for emulating
the BWX instructions (ld{b,w}u, st{b,w}, sext{b,w}), which user software
can expect to be emulated.  (Thanks, Alpha Architecture!)
1999-05-09 19:43:58 +00:00
cgd 75f1157922 convert to DEC-style register names (but not yet done for
the internal PALcode instruction format structure).
1999-05-09 19:40:00 +00:00
cgd 79c181f2e2 convert to DEC-style register names. 1999-05-09 19:39:13 +00:00
cgd c8cf931f56 convert to DEC-style register names. the attempt to use function-based
register names was confusing, and could not _be_ correct in some cases.
Also, add a couple of 'generic' instruction formats which should be used
when decoding instructions before the specific format is known.
1999-05-09 19:38:59 +00:00
drochner fe310dd299 include <lib/libkern/libkern.h> for intoa()/inet_ntoa() 1999-05-07 16:19:27 +00:00
christos c596c324e3 Define __builtin_*() for lint 1999-05-03 16:30:31 +00:00
cgd 34fde29505 update comment re: COMPAT_OSF1 1999-04-30 23:34:08 +00:00
cgd f6b3b14ce3 enable COMPAT_OSF1 1999-04-30 23:33:41 +00:00
cgd ff48595e8b processes would have vm->vm_ssize screwed up when they faulted
data regions higher than USRSTACK.
1999-04-30 20:21:57 +00:00
cgd 1a3537df95 OSF/1 locore-ish bits. right now just sigcode 1999-04-30 05:58:10 +00:00
cgd 04f53f0b03 gross hack for SIGFPE under OSF/1, until ross makes SW completion go 1999-04-30 05:47:53 +00:00
ross c5a82dd848 * New MI man page for fp{set,get}{round,sticky,mask}(3).
* Implement fpgetsticky() for alpha.
* Direct fpsetsticky() and fp{get,set}mask() into alpha kernel via sysarch(2).
* Define new sysarch(2) stub for above and install and distribute sysarch.h
for alpha.  (The fpcr IS user mode r/w, but for reasons beyond the scope
of a commit message kernel calls are needed.) And much kernel Magick is
required before these do anything, but this way programs compiled under
1.4 will DTRT on future snapshots and releases.
1999-04-30 00:58:30 +00:00
ross 7288a55336 Use a different initial FPCR, mainly to suppress the ieee inexact trap. 1999-04-29 03:02:20 +00:00
ross 0847df9065 #ifdef _KERNEL, define the machine FPCR bits and a rounding mode macro 1999-04-29 02:55:50 +00:00
ross aa1e5724b9 WSEMUL_SUN -> WSEMUL_VT100 1999-04-29 01:28:40 +00:00
cgd 7b8e7abdd6 use osf1_exec_ecoff_hook() 1999-04-27 02:33:35 +00:00
cgd 6f2f5becb6 Alpha ECOFF object type definitions 1999-04-27 02:32:33 +00:00
ross f868468aaa Never used, and work-in-progress uses a different header. 1999-04-25 20:15:06 +00:00
simonb 5d8b1ef3e4 g/c REAL_CLISTS. 1999-04-25 02:56:26 +00:00
ross 28ef22871e Copy isdn4bsd cdevsw hooks from i386 conf.c. 1999-04-24 17:01:15 +00:00
cgd 575e9f8dfd support emulation-specified errno mapping tables 1999-04-23 05:43:02 +00:00
ross be000bc016 Revert 1/2 of previous change. INSECURE is still OK for alpha. 1999-04-20 21:43:03 +00:00
thorpej f7b0fea081 After reviewing the Green Book, BPT traps do indeed leave the PC pointing
to the instruction _after_ the `call_pal bpt' instruction.
1999-04-20 21:30:15 +00:00
thorpej 375b3fa699 Prototype alpha_debug(), and add some definitions for KGDB. 1999-04-20 21:23:56 +00:00