user application performs a division by zero or causes a general
protection fault. For some exceptions (e.g. machine check) I wasn't
quite sure whether they can be caused by user apps at all, so we panic()
in those cases. Wouldn't harm, if someone more knowledgable would check
this, though.
* Removed the unused fault handling stuff, respectively moved the little
that was used into x86/arch_int.c.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13795 a95241bf-73f2-0310-859d-f6bbb57e9c96
allocating a buffer and copying your data into it, when you have data to
send in several chunks (for example, this could be used by BMessage, as
suggested by Ingo Weinhold).
Code is untested, but should work.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13667 a95241bf-73f2-0310-859d-f6bbb57e9c96
time of the idle thread. IOW Pulse now works :-)
Renamed the idle thread/stack to start with 1 instead of 0 (first idle thread will
be called "idle thread 1").
Minor cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13373 a95241bf-73f2-0310-859d-f6bbb57e9c96
now as well.
Also, both functions will now test if the executable exists and is valid; that
way, load_image()/exec*() can catch many errors without having to create a new
team (or erase the current one - an exec*("my invalid app") might now return
with an error).
The runtime linker now exports a function to test executables that is aware
of the search paths, and will also check user permissions upfront.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13113 a95241bf-73f2-0310-859d-f6bbb57e9c96
no items can be removed from that list - nevertheless, it's wrong.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13088 a95241bf-73f2-0310-859d-f6bbb57e9c96
can now only happen if the thread is killed.
_user_receive_data() will now longer pass B_CAN_INTERRUPT to receive_data(),
but B_KILL_CAN_INTERRUPT - this should fix the problem Stefano experienced
with this function, even if I couldn't reproduce it.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13075 a95241bf-73f2-0310-859d-f6bbb57e9c96
Added new devfs_add_driver() function that the device manager will now call
to register new drivers.
Devfs will now keep a list of known drivers and remembers, if they have
been initialized already - a driver can now safely scan the directory it's
in while being scanned itself without having its hooks called twice.
Devfs is now using a recursive lock instead of a mutex (that's not really
a requirement right now, but would allow us to keep the fs lock during
scanning).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12933 a95241bf-73f2-0310-859d-f6bbb57e9c96
called by debug_init_post_vm().
Since the availability of a blue screen specific getchar() is static anyway, there
is no need for the sBlueScreenGetChar variable (only the message "only serial input
available" gets lost, but since that is platform specific anyway...).
Hello blue screen! We now have an on-screen KDL, to be enabled by the kernel
setting "bluescreen", just like on BeOS.
The blue screen does not yet support any cursor actions or backspace, though (need
to grab some stuff from our console driver).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12896 a95241bf-73f2-0310-859d-f6bbb57e9c96
kernel_debugger() didn't do enough before; panic() did all the work - but
since the former is a public function as well, I moved all the functionality
to it. Also fixed a possible buffer overrun in panic().
Renamed dbg_* to debug_*.
"serial_debug_port" setting did not ignore negative values.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12889 a95241bf-73f2-0310-859d-f6bbb57e9c96
This will keep it alive longer until a) the block cache no longer
uses the heap, and b) we get a better heap without a fixed size.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12830 a95241bf-73f2-0310-859d-f6bbb57e9c96
VFS's interface, so that a file system only has to implement one interface.
As a side effect, the automatic file system detection may now work (not yet
tested, though).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12786 a95241bf-73f2-0310-859d-f6bbb57e9c96
following 1152 MB - that area only guarantees that the heap can grow this much before
the application need the memory for something else. And even then, the heap range
is reused from top-to-bottom, allowing for maximum heap usage. Of course, if the
memory after the heap range is not claimed yet, it can still be claimed by the heap,
too. Added new syscall to create the reserved range.
Fixed a bug in vm_delete_areas(): when it removed reserved areas, the area list
could get messed up.
Fixed a bug in resize_area(): resized areas could never be deleted (missing vm_put_area())!
resize_area() now supports reserved regions (but not perfectly yet, see ToDo items).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12692 a95241bf-73f2-0310-859d-f6bbb57e9c96
only if memory becomes tight, and then the range is used from end to
start.
This is useful to reserve heap address ranges.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12675 a95241bf-73f2-0310-859d-f6bbb57e9c96
along the protection flags).
Changed the handling of B_STACK_AREA types and anonymous vm_areas: now
every area can overcommit if B_OVERCOMMITTING_AREA was specified.
B_STACK_AREA areas are still automatically overcommitting, but
B_KERNEL_STACK_AREA areas no longer.
vm_store_anonymous_noswap.c now only tests for guard pages if there were
any specified which is only done for B_STACK_AREA areas.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12673 a95241bf-73f2-0310-859d-f6bbb57e9c96
(right now, it's still malloc/free, just encapsulated in an allocator class).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12662 a95241bf-73f2-0310-859d-f6bbb57e9c96
- has_signals_pending() is not declared in Be headers, and it isn't declared in
our KernelExport.h anymore, too
- removed snooze_etc() from KernelExport.h, as it's already defined in OS.h
(and really exported by libroot.so).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12506 a95241bf-73f2-0310-859d-f6bbb57e9c96
Lots of cleanup:
- moved B_NO_ENABLE_COUNTER flag definition out of int.h to KernelExport.h, as it's
described in the BeBook (although it's probably not really used that often :))
- int.c no longer has any platform dependent code (+ 0x20 on interrupt numbers is gone);
it's now entirely handled in the arch/x86/ section.
- the io_vectors[] is now statically initialized, instead of allocated from the heap
- removed {install|remove}_interrupt_handler(); they weren't that useful, arch_smp_init()
is now calling install_io_interrupt_handler() correctly instead
- introduced a new arch_int.h header file that currently contains NUM_IO_VECTORS only
(though on x86, it also has ARCH_INTERRUPT_BASE == 0x20).
- changed the return type from {install|remove}_io_interrupt_handler() from "long" to
"status_t"
- rearranged and cleaned the PIC initialization code, made the PIC code more prominent
- changed comments that talk about a non existing 8239 (the PIC chip is actually 8259)
- moved arch/x86/interrupts.h to the source directory, as it's not used outside
- added BeOS compatible interrupts_enabled() function, that should replace our
equivalent (and private) are_interrupts_enabled()
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12477 a95241bf-73f2-0310-859d-f6bbb57e9c96
Also changed readlink() to be POSIX compliant with those changes.
"ls -l" does now resolve links properly again (the new coreutils version outlined the problems).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12263 a95241bf-73f2-0310-859d-f6bbb57e9c96
create_area() and friends should fail if it's not supported.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12248 a95241bf-73f2-0310-859d-f6bbb57e9c96
for these changes. I was mostly just staring in amazement at the screen
while Axel and Thomas were discussing IA32 internals. A particularly
fascinating moment was when Thomas produced the cause of a bug we had
been trying to track down for hours off the top of his head (of course
iret behaves specially when the NT bit is set :-). His slowness must be
excused though, since he hadn't slept for more then 30 hours. ;-)
The code doesn't wholeheartedly deal with multi-processor machines yet.
Axel will certainly do some cleanup...
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12239 a95241bf-73f2-0310-859d-f6bbb57e9c96
flag. Now, it will choose how to set the granularity by evaluating the
limit.
This call was actually already used this way in the kernel, so that
the TLS and TSS segments were much too large (harmless but incorrect).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12231 a95241bf-73f2-0310-859d-f6bbb57e9c96
Introduced a gBootFrameStack that is used until the first thread structure
is available - this allows stack crawls and useful register dumps during
early startup. Could also be solved differently by making sure there is
always a thread structure installed in %dr3 (ie. the boot thread would
get a static thread structure instead of a static iframe stack only).
This might be a better solution as i386_handle_trap() would no longer
need to check for an existing thread structure.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12230 a95241bf-73f2-0310-859d-f6bbb57e9c96
Moved ptentry/pdentry to arch_vm_translation_map.c and renamed them to
page_table_entry and page_directory_entry.
Fixed a race condition that happened when memory was remapped (which
can currently happen because lock_memory() does not work correctly, and
there might be other conditions as well, like certain vm_store fault
handlers). Now, page table and directory entries are updated atomically.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12229 a95241bf-73f2-0310-859d-f6bbb57e9c96
the APM driver to see it at work).
The frame buffer console now creates such a boot item to give a potential
VESA driver access to the boot frame buffer configuration.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12221 a95241bf-73f2-0310-859d-f6bbb57e9c96
MenuItem::SetData() now asks for a const parameter.
The safemode menu options now set their MenuItem::Data() to the safemode option string.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12191 a95241bf-73f2-0310-859d-f6bbb57e9c96
instead B_KERNEL_PROTECTION and B_USER_PROTECTION.
Unlike before, B_USER_CLONEABLE_AREA is now only in B_KERNEL_AREA_FLAGS,
but no longer in B_KERNEL_PROTECTION. This fixes a couple of problems
when B_USER_CLONEABLE_AREA was defined without specifing read/write
access.
PAGE_PRESENT|MODIFIED|ACCESSED are in the same "namespace" as the
protection flags, and therefore, shouldn't overlap.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12154 a95241bf-73f2-0310-859d-f6bbb57e9c96
with the bit number, not the respective mask).
* Added a small hack to allow single stepping to work in qemu.
Apparently the BS bit in DR6 is not set when the debug exception
is handled. So we always assume that a single step event occurred,
when we couldn't recognize any other event, if the hack is enabled.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@11998 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Added initialization function. Currently only need to init the
single step hack for qemu.
* Fixed a deadlock when the nub thread destroyed the debug info. It was
waiting for itself.
* Moved the filling in the origin info of the debug messages into
thread_hit_debug_event_internal(). No need for code duplication.
* Writing to user memory can now be partial. We also change the area
protection, if it wasn't writable. Necessary for setting software
breakpoints.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@11996 a95241bf-73f2-0310-859d-f6bbb57e9c96
removed unused headers. Adapted sources to still compile with the new
header locations.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@11913 a95241bf-73f2-0310-859d-f6bbb57e9c96
team boundaries; if you didn't actually call close() from within the
application, the close-hook of the file system was never called.
Also, you could close files of other teams (ie. invoke close on a
shared file descriptor).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@11892 a95241bf-73f2-0310-859d-f6bbb57e9c96
Axel Dörfler