Commit graph

22 commits

Author SHA1 Message Date
Kees van Reeuwijk
e85f78a20b Add some support for wchar_t. 2010-04-19 15:20:24 +00:00
Cristiano Giuffrida
48c6bb79f4 Driver refactory for live update and crash recovery.
SYSLIB CHANGES:
- DS calls to publish / retrieve labels consider endpoints instead of u32_t.

VFS CHANGES:
- mapdriver() only adds an entry in the dmap table in VFS.
- dev_up() is only executed upon reception of a driver up event.

INET CHANGES:
- INET no longer searches for existing drivers instances at startup.
- A newtwork driver is (re)initialized upon reception of a driver up event.
- Networking startup is now race-free by design. No need to waste 5 seconds
at startup any more.

DRIVER CHANGES:
- Every driver publishes driver up events when starting for the first time or
in case of restart when recovery actions must be taken in the upper layers.
- Driver up events are published by drivers through DS. 
- For regular drivers, VFS is normally the only subscriber, but not necessarily.
For instance, when the filter driver is in use, it must subscribe to driver
up events to initiate recovery.
- For network drivers, inet is the only subscriber for now.
- Every VFS driver is statically linked with libdriver, every network driver
is statically linked with libnetdriver.

DRIVER LIBRARIES CHANGES:
- Libdriver is extended to provide generic receive() and ds_publish() interfaces
for VFS drivers.
- driver_receive() is a wrapper for sef_receive() also used in driver_task()
to discard spurious messages that were meant to be delivered to a previous
version of the driver.
- driver_receive_mq() is the same as driver_receive() but integrates support
for queued messages.
- driver_announce() publishes a driver up event for VFS drivers and marks
the driver as initialized and expecting a DEV_OPEN message.
- Libnetdriver is introduced to provide similar receive() and ds_publish()
interfaces for network drivers (netdriver_announce() and netdriver_receive()).
- Network drivers all support live update with no state transfer now.

KERNEL CHANGES:
- Added kernel call statectl for state management. Used by driver_announce() to
unblock eventual callers sendrecing to the driver.
2010-04-08 13:41:35 +00:00
Lorenzo Cavallaro
a16308efdb cdecl calling convention expects the callee to pop the hidden pointer on
struct return. For example, GCC and LLVM comply with this (tested on IA32).

ACK doesn't seem to follow this convention and expects the caller to clean up
the stack. Compiling hand-written ACK-compliant assembly code (returning a 
struct) with GCC or LLVM used to break things (4-bytes misaligned stack).

The patch fixes this problem.
2010-03-24 17:25:17 +00:00
Cristiano Giuffrida
bde2109b7c IPC status code for receive().
IPC changes:
- receive() is changed to take an additional parameter, which is a pointer to
a status code.
- The status code is filled in by the kernel to provide additional information
to the caller. For now, the kernel only fills in the IPC call used by the
sender.

Syslib changes:
- sef_receive() has been split into sef_receive() (with the original semantics)
and sef_receive_status() which exposes the status code to userland.
- Ideally, every sys process should gradually switch to sef_receive_status()
and use is_ipc_notify() as a dependable way to check for notify.
- SEF has been modified to use is_ipc_notify() and demonstrate how to use the
new status code.
2010-03-23 00:09:11 +00:00
Arun Thomas
436d6012a3 Convert drivers/ and servers/ over to bsdmake
-Move libdriver to lib/
-Install all boot image services on filesystem to aid restartability
2010-03-22 21:25:22 +00:00
Thomas Veerman
bef0e3eb63 - Add support for the ucontext system calls (getcontext, setcontext,
swapcontext, and makecontext).
- Fix VM to not erroneously think the stack segment and data segment have
  collided when a user-space thread invokes brk().
- Add test51 to test ucontext functionality.
- Add man pages for ucontext system calls.
2010-03-12 15:58:41 +00:00
Arun Thomas
2a8fabf4ad Include directory reorg and makefile updates.
-Convert the include directory over to using bsdmake
 syntax
-Update/add mkfiles
-Modify install(1) so that it can create symlinks
-Update makefiles to use new install(1) options
-Rename /usr/include/ibm to /usr/include/i386
-Create /usr/include/machine symlink to arch header files
-Move vm_i386.h to its new home in the /usr/include/i386
-Update source files to #include the header files at their
 new homes.
-Add new gnu-includes target for building GCC headers
2010-03-08 11:04:59 +00:00
Ben Gras
32fa22fc2d RS_LOOKUP feature for libc functions that want to access servers.
let ipc talk to all USER processes and vice versa.

pm sig wrapper notify has to be called from two files.

actually install include files.
2009-09-21 15:25:15 +00:00
Ben Gras
8a54d267f0 - VM_KERN_NOPAGEZERO feature is gone
- sys_getbiosbuffer feature is gone (from kernel; available from vm)
- bump version number because munmap() calls that newly compiled binaries
  will do trigger an ugly (but harmless) error message in older VM's
- some new VM calls and flags, the new IPC calls
- some new CR0 register bits
- added files for shared memory
2009-09-21 14:23:10 +00:00
Ben Gras
bc8b79da53 Make includes for gcc 4.1.1 too if found. 2006-08-01 09:17:43 +00:00
Ben Gras
5519b87186 make gcc doesn't work if $SHELL is unexpected 2006-03-31 22:26:42 +00:00
Ben Gras
b74617dede gcc separate target 2005-10-20 20:38:12 +00:00
Ben Gras
e50b781884 gcc includes fixup 2005-10-18 17:21:24 +00:00
Ben Gras
4bae163d37 High watermark memory usage feature 2005-10-18 17:21:11 +00:00
Ben Gras
f04d46f456 Fixup for gcc headers (if installed) 2005-10-13 12:46:23 +00:00
Ben Gras
90fecead0d *** empty log message *** 2005-08-28 22:01:06 +00:00
Ben Gras
43641f5d7b One of Al's memory-friendly changes 2005-08-26 12:38:15 +00:00
Ben Gras
ad24bb4072 Make include files and dirs bin-owned, to make sure bin can install them 2005-08-05 11:40:46 +00:00
Ben Gras
c69ed2c4b1 Verbose tar option was for debugging, shouldn't have been commited. Undone. 2005-07-15 11:49:34 +00:00
Jorrit Herder
272a8496ac Updated system call library.
Updated various header files for consistency.
Remove some unused stuff ... better check to be done.
2005-07-14 15:14:44 +00:00
Ben Gras
6b500b03a6 Raised version to 3.0.2 in config.h
Told the Makefile not to panic if creating /usr/include due to it existing
(due to bin not being allowed to create it) fails, this smoothens installs
done by bin (instead of root).
2005-05-03 15:39:41 +00:00
Ben Gras
9865aeaa79 Initial revision 2005-04-21 14:53:53 +00:00