the raspberry pi 4 has a new interrupt controller and
pci support, so get rid of intrenable() macro and
properly make intrenable function with tbdf argument.
the raspberry pi4 firmware refuses to enable the GIC interrup controller
for arm64 when the .img file is not a multiple of 4 bytes. yes, this
is insane and nowhere documented.
the new raspberry pi 4 firmware for arm64 seems to have
broken atag support. so we now parse the device tree
structure to get the bootargs and memory configuration.
Ori Bernstein had Sunrise Point-H USB 3.0 xHCI Controller that would mysteriously
crash on the 5th ENABLESLOT command. This was reproducable by even just allocating
slots in a loop right after init.
It turns out, the 1.2 spec extended the Max Scratchpad Buffers in HCSPARAMS2 so our
driver would not allocate enougth scratchpad buffers and controller firmware would
crash once it went beyond our allocated scratchpad buffer array.
This change also fixes:
- ignore bits 16:31 in PAGESIZE register
- preserve bits 10:31 in the CONFIG register
- handle ADDESSDEV command failure (so it can be retried)
preallocate 2% of user pages for page tables and MMU structures
and keep them mapped in the VMAP range. this leaves more space
in the KZERO window and avoids running out of kernel memory on
machines with large amounts of memory.
when a operation receives a chain of OINDEX nodes as its operands,
each indexing step used to allocate a new index register. this
is wastefull an can result in running out of fixed registers on 386
for code such as: x = a[a[a[a[i]]]].
instead we attempt to reuse the destination register of the operation
as the index register if it is not otherwise referenced. this results
in the index chain to use a single register for index and result and
leaves registers free to be used for something usefull instead.
for 6c, try to avoid R13 as well as BP index base register.
For ape, we never enabled warnings in cflags.
Turning it on brings up a lot of warnings. Most are noise,
but a few caught unused variables and trunctaions of pointers.
to smaller integers (int, long).
A few warnings remain.
To reproduce:
gs -q -dNOPAUSE -dSAFER '-sDEVICE=ppmraw' '-sOutputFile=/dev/null' <<.
%!PS-Adobe-3.0 EPSF-3.0
%%BoundingBox: -0 -0 100 100
/size_from 10000 def
/size_step 500 def
/size_to 65000 def
/enlarge 1000 def
%/bigarr 65000 array def
0
size_from size_step size_to {
pop
1 add
} for
/buffercount exch def
/buffersizes buffercount array def
0
size_from size_step size_to {
buffersizes exch 2 index exch put
1 add
} for
pop
/buffers buffercount array def
0 1 buffercount 1 sub {
/ind exch def
buffersizes ind get /cursize exch def
cursize string /curbuf exch def
buffers ind curbuf put
cursize 16 sub 1 cursize 1 sub {
curbuf exch 255 put
} for
} for
/buffersearchvars [0 0 0 0 0] def
/sdevice [0] def
enlarge array aload
{
.eqproc
buffersearchvars 0 buffersearchvars 0 get 1 add put
buffersearchvars 1 0 put
buffersearchvars 2 0 put
buffercount {
buffers buffersearchvars 1 get get
buffersizes buffersearchvars 1 get get
16 sub get
254 le {
buffersearchvars 2 1 put
buffersearchvars 3 buffers buffersearchvars 1 get get put
buffersearchvars 4 buffersizes buffersearchvars 1 get get 16 sub put
} if
buffersearchvars 1 buffersearchvars 1 get 1 add put
} repeat
buffersearchvars 2 get 1 ge {
exit
} if
%(.) print
} loop
.eqproc
.eqproc
.eqproc
sdevice 0
currentdevice
buffersearchvars 3 get buffersearchvars 4 get 16#7e put
buffersearchvars 3 get buffersearchvars 4 get 1 add 16#12 put
buffersearchvars 3 get buffersearchvars 4 get 5 add 16#ff put
put
buffersearchvars 0 get array aload
sdevice 0 get
16#3e8 0 put
sdevice 0 get
16#3b0 0 put
sdevice 0 get
16#3f0 0 put
currentdevice null false mark /OutputFile (%pipe%echo gotce)
.putdeviceparams
1 true .outputpage
.rsdparams
%{ } loop
0 0 .quit
%asdf
.
under heavy load, factotum can return a "too much activity" error,
which upas/smtpd and upas/smtp should consider a temporary error
instead of a permanent one.
implicit casts would cause spurious "result of operation not used"
warnings such as ape's stdio putc() macro.
make (void) casts non-ops when the casted expression has no
side effects. this avoid spurious warning with ape's assert()
macro.
for historical reasons, kenfs stores directory entries in pre 9p2000
format with directories having the QPDIR bit 31 set in the qid path.
however, the 64 bit fileserver allows 64 bit qid paths.
given that we do not support pre 9p2000 clients and do not rely on
the QPDIR, but want to keep the block check tags consistent, we will
*INVERT* the QPDIR bit in directory entry qid paths for directories.
this preserves the on-disk semantics (for < 31 bit qmax) but does
not complicate qid generation and recovery. also makes it easy to
convert between directory entry qid and 9p format.
C99 comments have been the default in compilers for something like 20 years
now. This means we don't need to remember to turn it on when porting software,
and gets rid of cryptic errors about unterminated character constants when
someone writes something like:
// Didn't need to...
We still accept the flag to avoid breaking mkfiles, but we do nothing with it.
This also removes the documentation, since the option does nothing now.
This change imports a few warnings and minor fixes from Charles branch
here: https://bitbucket.org/plan9-from-bell-labs/plan9.
The changes included here:
changeset: 1374:9185dc017be0
summary: declare castucom; move a declaration into order;
use cast instead of ULL suffix
changeset: 1353:5fe8380b1818
summary: supporting functions:
1. castucom to match unlikely mask operation;
2. be sure to snap both sides of pointer subtraction completely;
3. add extra operators as side-effect free
changeset: 1352:90058c092d66
summary: 1. correct result type for mixed-mode assignment operators
2. detect divide by zero (erik);
3. detect masks misformed by sign-extension;
4. diagnose mixed old/new prototypes
