| Age | Commit message (Collapse) | Author |
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when sending messages, we do not merge headers, so
splitting headers the way we did leads to invalid
messages getting sent; stop doing it.
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same as 89c60481afd8307f7825281bd561995f83a7bfb2.
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if tempo changes while older events are in flight at different
timings in a multitrack file, and since there's no compensation
for it, tracks desyncronise, the order of events get jumbled up
and everything just falls apart.
rather than doing dances with the old code to figure out what
corrective factor to apply and where, just use the simplest and
most robust way, advance one tic at a time.
also add a tracing mode and don't always print useless and
annoying warnings.
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> It gets applied to any protocol type that is not pptp
> but should only process encapsulated ip4 packets.
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For the port control, it can be usefull to refer to a
hub by its stable hash name.
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Experimental feature:
echo portpower <hub> <port> on/off > /dev/usbhubctl
echo portindicator <hub> <port> on/off > /dev/usbhubctl
Where <hub> is the device number of the hub (as in /dev/usb/epX)
and <port> is the port index (1..n).
Hub and port numbers can be found by reading /dev/usb/ctl.
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The hub address is only usefull for the host controller
driver, while userspace really cares about the device number.
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Allow specifying the local IP addresses that
the UDP dns server will listen on when the
-s flag is given.
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This is similar to plan9port dial(1), but names aux/dial
because we already have the expect(1) commands in
/bin/dial.
One difference is that our dial allows specifying a
command, similar to aux/listen1 that will get connected
it standard input and output to the network connection.
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There is currently no way to get the current mouse position
and button states without blocking.
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Cosa wrote:
While trying to run kvik's lu9 on ARM, I found that when converting
LLONG_MIN to a double on 32bit systems, the result is wrong (positive
instead of negative).
Given the following test program:
void main() {
vlong min = LLONG_MIN;
double dmin = min;
print("minint %lld\n", min);
print("minint as double %f\n", dmin);
if (dmin > 0.0) {
exits("int min as double turned positive");
}
exits(0);
}
The output on x86_64 will be:
minint -9223372036854775808
minint as double -9223372036854776400.000000
But on arm or 386 (and I expect also spim, 68000, mips, 68020, sparc,
power, since they all use the same _v2d):
minint -9223372036854775808
minint as double 9223372036854776400.000000
And the value turned positive in the conversion.
The function used for the cast to double is (in /sys/src/libc/arm/vlrt.c):
double
_v2d(Vlong x)
{
if(x.hi & SIGN(32)) {
if(x.lo) {
x.lo = -x.lo;
x.hi = ~x.hi;
} else
x.hi = -x.hi;
return -((long)x.hi*4294967296. + x.lo);
}
return (long)x.hi*4294967296. + x.lo;
}
If I understand correctly, the issue is that where it tries to flip the
sign for x.hi (x.hi = -x.hi), 0x80000000 has no positive, thus stays the
same (it stays negative). Then when we get to the negative return, we
get a positive out.
What came to my mind then, is that in the case that there is no x.lo, we
can keep the x.hi sign and cast directly, thus:
double
_v2d(Vlong x)
{
if(!x.lo) {
return (long)x.hi*4294967296.;
}
if(x.hi & SIGN(32)) {
x.lo = -x.lo;
x.hi = ~x.hi;
return -((long)x.hi*4294967296. + x.lo);
}
return (long)x.hi*4294967296. + x.lo;
}
This looks correct to me, but I don't trust myself to not make mistakes
in such critical code, so I would like some feedback on the change.
Happy new year in advance,
cosa
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AddrMaskRequest
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- pass the correct ocr value for SEND_OP_COND (advertise Hcs and 3.3v)
- disambiguate SEND_RELATIVE_ADDRESS/SET_RELATIVE_ADDRESS
- detect the MMC version from CSD structure
- detect the capacity according to spec for MMC
- implement SWITCH command to set highspeed frequency and bus width
- rename Ctlr to Card (thats really what we keep track of here)
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The debug print contidion was wrong and would always
result in a debug print, even if the command just
timed out.
The R1b response seems to be handled internally by
the controller, so we do not need to wait for
datadone interrupt.
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We want to support the internal emmc device on the reform,
which has a different initialization sequence from SDcard.
The problem is, all mmc controller drivers where using
the command index to derive the command properties.
The command index's interpretation depends on the
command set. And MMC has different commands then SD.
Also, there are the APP_CMD escaped commands which
drivers then tried to recover the state...
All of this is total nonsense... The controller drivers
should not care and the command properties should
be maintained by port/sdmmc.c.
So we pass the command as a struct SDiocmd, which
has all the properties (command index, response type,
data transfer mode... and even a string for debugging).
The controller just converts this into register values
and just executes the commands.
Next, the controller drivers shouldnt snoop on the
commands and then try to apply bus and frequency
switching on their own. This is now made explicit by
having SDio.bus(io, width, speed) function.
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Namespace files have been updated and the tls device
is now available under /net.
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Make global variables static to avoid symbol clashes.
Order Link fields more compactly for 64-bit archs.
Add a common freelink() function for freeing Boards and Srvs.
Chain all Boards in a circular doubly-linked list,
so srvrename() can actually change the owners of *all*
the boards instead of just the root. We cannot use
recursion here as that could potentially blow the
kernel stack.
srvname() was also only processing the root.
Instead, we add a srvname field to Chan and set it to
the original path of the srv file that was used to post
the channel.
Call openmode() at the beginning of srvopen().
The reason is if omode has invalid bits it can error
and leave stuff in a inconsistent state.
Prevent srvwstat() to rename a file to "clone", it is
reserved.
Get rid of "lease expired" error message, just use
Eshutdown.
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