- we'll just use decimal chip number (68030, ...) to identify cpu, fpu, and mmu for simplicity.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26041 a95241bf-73f2-0310-859d-f6bbb57e9c96
file for hpet implementation. Not yet added to the build.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25773 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Use vm86 mode to call the VESA BIOS to do the actual mode switching by
providing an ioctl in the vesa driver.
* Fix vm86.h.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25680 a95241bf-73f2-0310-859d-f6bbb57e9c96
* The new function vm86_do_int(struct vm86_state *state, uint8 vec) provides a
facility to call BIOS interupt handlers. The function must only be called from
a user thread context because the lower 1MB of the address space is used.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25610 a95241bf-73f2-0310-859d-f6bbb57e9c96
* In vm86 mode CS will have arbitrary values so we check for both USER_CODE_SEG
and the VM flag in EFLAGS. This is also done when entering interrupt gates.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25607 a95241bf-73f2-0310-859d-f6bbb57e9c96
to contain headers shared by kernel and userland (mainly libroot).
* Moved quite a few private kernel headers to the new location. Split
several kernel headers into a shared part and one that is still kernel
private. Adjusted all affected Jamfiles and source in the standard x86
build accordingly. The build for other architectures and for test code
may be broken.
* Quite a bit of userland code still includes private kernel headers.
Mostly those are <util/*> headers. The ones that aren't strictly
kernel-only should be moved to some other place (maybe
headers/private/shared/util).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25486 a95241bf-73f2-0310-859d-f6bbb57e9c96
address space that is fully locked and marked B_KERNEL_AREA. It can
thus be accessed by the kernel without additional checks.
* For each userland thread we do create a user_thread structure in that
area. The structure is accessible from userland via TLS, using the
private get_user_thread() function.
* Introduced private userland functions [un]defer_signals(). They can be
used to cheaply disable/re-enable signal delivery. They use the
user_thread::defer_signals/pending_signals fields which are
checked/updated by the kernel.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25451 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Allow userland teams to create areas below 1 MB when requested specifically.
* Note, this is a temporary solution - see the comments in the code.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25358 a95241bf-73f2-0310-859d-f6bbb57e9c96
a call chain contains a specific symbol (or address).
* Added a new KDL command "calling" that you can use to get a list of
threads that have a specific function in their call chain.
* Removed extraneous white space.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24594 a95241bf-73f2-0310-859d-f6bbb57e9c96
- Take extended family and model into account when generating the cpu
type and revision.
- Added Intel Core 2 Extreme to the cpu list.
Please review.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24509 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Implemented automatic syscall restarts:
- A syscall can indicate that it has been interrupted and can be
restarted by setting a respective bit in thread::flags. It can
store parameters it wants to be preserved for the restart in
thread::syscall_restart::parameters. Another thread::flags bit
indicates whether it has been restarted.
- handle_signals() clears the restart flag, if the handled signal
has a handler function installed and SA_RESTART is not set. Another
thread flag (THREAD_FLAGS_DONT_RESTART_SYSCALL) can prevent syscalls
from being restarted, even if they could be (not used yet, but we
might want to use it in resume_thread(), so that we stay
behaviorally compatible with BeOS).
- The architecture specific syscall handler restarts the syscall, if
the restart flag is set. Implemented for x86 only.
- Added some support functions in the private <syscall_restart.h> to
simplify the syscall restart code in the syscalls.
- Adjusted all syscalls that can potentially be restarted accordingly.
- _user_ioctl() sets new thread flag THREAD_FLAGS_IOCTL_SYSCALL while
calling the underlying FS's/driver's hook, so that syscall restarts
can also be supported there.
* thread_at_kernel_exit() invokes handle_signals() in a loop now, as
long as the latter indicates that the thread shall be suspended, so
that after waking up signals received in the meantime will be handled
before the thread returns to userland. Adjusted handle_signals()
accordingly -- when encountering a suspending signal we don't check
for further signals.
* Fixed sigsuspend(): Suspending the thread and rescheduling doesn't
result in the correct behavior. Instead we employ a temporary
condition variable and interruptably wait on it. The POSIX test
suite test passes, now.
* Made the switch_sem[_etc]() behavior on interruption consistent.
Depending on when the signal arrived (before the call or when already
waiting) the first semaphore would or wouldn't be released. Now we
consistently release it.
* Refactored _user_{read,write}[v]() syscalls. Use a common function for
either pair. The iovec version doesn't fail anymore, if anything could
be read/written at all. It also checks whether a complete vector
could be read/written, so that we won't skip data, if the underlying
FS/driver couldn't read/write more ATM.
* Some refactoring in the x86 syscall handler: The int 99 and sysenter
handlers use a common subroutine to avoid code duplication.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23983 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Add platform methods for timer as it is platform dependent.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23673 a95241bf-73f2-0310-859d-f6bbb57e9c96
23139 into trunk, with roughly the following changes (for details svn
log the branch):
* The int 99 syscall handler is now fully in assembly.
* Added a sysenter/sysexit handler and use it on Pentiums that support
it (via commpage).
* Got rid of i386_handle_trap(). A bit of functionality was moved into
the assembly handler which now uses a jump table to call C functions
handling the respective interrupt.
* Some optimizations to get user debugger support code out of the
interrupt handling path.
* Introduced a thread::flags fields which allows to skip handling of
rare events (signals, user debug enabling/disabling) on the
common interrupt handling path.
* Got rid of the explicit iframe stack. The iframes can still be
retrieved by iterating through the stack frames.
* Made the commpage an architecture independent feature. It's used for
the real time data stuff (instead of creating a separate area).
* The x86 CPU modules can now provide processor optimized versions for
common functions (currently memcpy() only). They are used in the
kernel and are provided to the userland via commpage entries.
* Introduced build system feature allowing easy use of C structure
member offsets in assembly code.
Changes after merging:
* Fixed merge conflict in src/system/kernel/arch/x86/arch_debug.cpp
(caused by refactoring and introduction of "call" debugger command).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23370 a95241bf-73f2-0310-859d-f6bbb57e9c96
* ACPI is evaluated first as it also handles things like multi core or hyper threading setups
* Removed other (disabled) hyper threading code per the notes in the corresponding ToDo
* Limit the detected CPU count to 2 for now as I wasn't able to get it working in either emulation nor real hardware with more than 2 CPUs
* Added a reserved byte to the mp_config_table struct, it worked only by luck as the compiler did padding there to get to the same size
I can now boot my Core 2 Quad with two out of four processors active :-)
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23100 a95241bf-73f2-0310-859d-f6bbb57e9c96
Abstracted cpu and mmu version dependant stuff (compatibility where are you) into ops like func arrays.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22821 a95241bf-73f2-0310-859d-f6bbb57e9c96
We will use SRP (supervisor root pointer) register to hold the current thread pointer.
Its use by the pmmu is optional and I don't plan on using it.
There are 32 other bits left.
Wonder if weshouldn't use it for system_time() instead... will see, but there are no other usable regs.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22696 a95241bf-73f2-0310-859d-f6bbb57e9c96
to the private VM types are including vm_types.h now.
* Removed vm_page, vm_area, vm_cache, and vm_address_space typedefs; it's
cleaner this way, and the actual types are only used in C++ files now,
anyway.
* And that caused changes in many files...
* Made commpage.h self-containing.
* Minor cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22329 a95241bf-73f2-0310-859d-f6bbb57e9c96
Can be enabled by defining KERNEL_BREAKPOINTS in arch/user_debugger.h
and will provide the arch_{set,clear}_kernel_{break,watch}point()
function. Hitting a break-/watchpoint will throw the thread into KDL.
* Finally added a comment, what's the point of
i386_reinit_user_debug_after_context_switch(), since I wonder every
time I see it. Should be optimized aways soon.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22150 a95241bf-73f2-0310-859d-f6bbb57e9c96
* On exec() the new function thread_reset_for_exec() is called which clears the signals
and cancels an eventually set alarm. Both things weren't done before...
* Some minor cleanups.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21989 a95241bf-73f2-0310-859d-f6bbb57e9c96
* PowerStatus is now using this API when compiled for Haiku.
* Note, I'm not sure why yet, but running PowerStatus in the background
crashes at least my laptop after some time.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21154 a95241bf-73f2-0310-859d-f6bbb57e9c96
The first use is to let the kernel decide what the preferred syscall mechanism is at boot time and copy the
appropriate user space code there. Can be used for routines the kernel can decide best how to use (memcpy, some
timing routines, etc).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20161 a95241bf-73f2-0310-859d-f6bbb57e9c96
the new cpuid stuff was apparently exacerbating an existing problem where various bits of low level
cpu code (specifically get_current_cpu) weren't really initialized before being used. Changed the
order to set up a fake set of threads to point each cpu at really early in boot to make sure that at
all points in code it can get the current 'thread' and thus the current cpu.
A probably better solution would be to have dr3 point to the current cpu which would then point to the
current thread, but that has a race condition that would require an int disable, etc.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20160 a95241bf-73f2-0310-859d-f6bbb57e9c96
Now two complete tss structures exist within the per-cpu structure. Instead
of having to create a seperate area per each one, initialize them in place.
Also, the old mechanism to getting all of the cpus to get initialized was
subtly broken, but still managed to work. Now, just force all the cpus to
initialize at boot, which makes the actual swapping of esp0 somewhat simpler.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20131 a95241bf-73f2-0310-859d-f6bbb57e9c96
at boot, per cpu, detect the cpu, pull down all the relevant cpuid bits and
save them into the per-cpu structure. Changed most of the code scattered here
and there that reads the cpuid to use a new api, x86_check_feature, which looks
at the saved bits.
Also changed the system_info stuff to read from these bits.
While i was at it, refreshed all the bits to be current.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20072 a95241bf-73f2-0310-859d-f6bbb57e9c96
some Pentium 200 MMX pretend to support MTRRs.
This should fix bug #553.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19899 a95241bf-73f2-0310-859d-f6bbb57e9c96
the userland stack in an unsafe way - moved that stuff to arch_thread_enter_userspace(), too.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19778 a95241bf-73f2-0310-859d-f6bbb57e9c96
turned off - accessing userland memory. Now, arch_thread_enter_userspace() does that
job, and as a result, may also fail.
* dump_thread() now directly prints the info of the current thread when used without
argument (rather than iterating the thread list to look for the current thread).
* If arch_thread_init_tls() fails upon thread creation, the function will now return
an error.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19775 a95241bf-73f2-0310-859d-f6bbb57e9c96
arch dependent code (they will be removed as soon as someone else
asks for these interrupt lines).
* Added an interrupt driven keyboard handler to the kernel that uses
this technique. As a result, you can now press F12 to enter the kernel
debugger before the input_server has been started, and Control-Alt-Delete
should reboot the system (actually I did not test the latter yet).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17806 a95241bf-73f2-0310-859d-f6bbb57e9c96
the device manager is initialized. For x86 it does nothing, but
for PPC it searches for a supported interrupt controller and
remembers it for later use.
arch_int_{enable,disable}_io_interrupt() are implemented as
well as handling of external exceptions (aka as I/O interrupts).
We'll see later how well that works.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@16271 a95241bf-73f2-0310-859d-f6bbb57e9c96
code. The stack pointer was not adjusted, hence we were
overwriting the previous register value. But it looks like I
missed to check in the arch_cpu.h with the iframe structure
including the floating point registers anyway.
* Backported the ELF PPC relocation code from the boot loader to
the kernel.
* Fixed the PPC version of arch_thread_switch_kstack_and_call().
Apparently the signature had changed, but the assembly
implementation was not adjusted accordingly.
* sc prints more registers now (LR, CR, CTR, XER,...).
* Fixed several occurences of not-working fault handlers.
Apparently the compiler realized, that the "error" label was
never jumped to (by the code it knew), and optimized the
respective code away. Now we use a trick to make it think the
error label might actually be jumped to. I wonder whether the
x86 version has the same problem when being compiled with GCC4.
* Adopted the x86 page fault handling interrupt code.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15933 a95241bf-73f2-0310-859d-f6bbb57e9c96
We don't do anything with it yet, though, so the BIOS will probably ignore us since
we are supposed to poll for events.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15900 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Cloned iframe stack management from x86.
* Reimplemented arch_thread_{get,set}_current_thread(). The
thread structure is stored in SPRG2. It is set to NULL in
arch_cpu_preboot_init(), now. A non-null current thread
causes all kinds of undesired behavior in early boot code.
* We establish the address space mappings we know from the
Open Firmware as areas. At least those in kernel address
space. The ones in userland address space are tougher.
Fortunately on my Mac mini there aren't any save the
boot_loader stack, which is not needed any longer anyway.
* Added stack trace support to the kernel debugger. Mostly
cloned and adjusted the x86 code. Some bits are still
missing, like stack traces for other threads.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15890 a95241bf-73f2-0310-859d-f6bbb57e9c96
void after turning off BAT for the segment containing itself.
The monster macro for the exception vector code was not really
elegant besides being too long for the 32 byte performance
monitor exception slot. Furthermore wasting three of the SPRG*
registers as cheap scratch memory wasn't that nice either.
We now have a three-step approach: The exception vectors
themselves contain only five instructions which branch to common
code at the beginning of the same physical page. That one sets
up BAT for itself, turns address translation back on and jumps
into the kernel. There we turn off BAT again, dump an iframe,
and enter the actual exception handler (/dispatcher). Upon return
the registers are restored from the iframe and we get back to the
place where the exception occurred.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15881 a95241bf-73f2-0310-859d-f6bbb57e9c96
The time base conversion factor is the 32 bit value
2^32 * 1000000 / time base frequency,
so the system time can be computed by
system time = time base * conversion factor / 2^32.
The expression in system_time() looks more complicated now, but is
actually much faster (factor 2.5 on my Mac mini). I'm positively
surprised, how good the assembly looks, that GCC 4 generates. There's
not that much potential for optimization by hand-coding the function.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15863 a95241bf-73f2-0310-859d-f6bbb57e9c96
device in the Open Firmware implementation of boot loader and
pass its path to the kernel, where it's opened and used for
getting/setting the real time. The expensive atomic_*64() on PPC
32-bit make things a bit more complicated. Moreover, missing
64 bit multiplication and division instructions won't really
allow system_time() to be anywhere near as fast as on x86. :-/
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15837 a95241bf-73f2-0310-859d-f6bbb57e9c96
substructure now (that's the only member actually). The system time
offset is therefore accessed via architecture specific accessor
functions.
Note, that this commit breaks the PPC build. Since I want to rename at
least one file I've already changed, I can't avoid that.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15835 a95241bf-73f2-0310-859d-f6bbb57e9c96
Basically the architecture specific code is now responsible to
init and make use of the platform specific code, now. The reason
being that we have only one kernel per platform and thus cannot
decide at compile time, which platform to use (if any).
The PPC implementation features an abstract base class PPCPlatform
(implemented for all supported platforms) through which platform
support is provided.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15824 a95241bf-73f2-0310-859d-f6bbb57e9c96
bus, and time base frequency) in the PPC boot loader, and propagate
them to the kernel via kernel_args.
* Now we use the correct time base frequency for timer calculations.
* Implemented PPC specific system info stuff. Added a few PPC CPU
types to <OS.h>.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15817 a95241bf-73f2-0310-859d-f6bbb57e9c96
remapping stuff into separate functions and made them available to
others.
* Remap the exception handler space in arch_int_init_post_vm() into the
kernel address space (same issue as with the page table).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15783 a95241bf-73f2-0310-859d-f6bbb57e9c96
According to the spec we need to set it before taking over the MMU,
but we can't call it before arch_mmu_init(), since we need the OF
to allocate the page table. So we do it after we have allocated
the new page table.
* Added PPC specific kernel_args: The virtual address ranges we want
to keep in the kernel. We fill that in with the translations we
find when initializing the MMU stuff. We remove the memory the
boot loader occupies from those. Besides the stack for the boot
loader only the OF stuff remains.
* arch_mmu_allocate() now starts to search at KERNEL_BASE for a free
virtual address when no particular address is requested. This saves
us further trouble in the kernel, since those allocations would
need to be remapped otherwise.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15780 a95241bf-73f2-0310-859d-f6bbb57e9c96
the fact that I couldn't find ptesync in an otherwise more complete
documentation I downloaded yesterday made me suspicious.
* arch_cpu_global_TLB_invalidate() uses tlbia now. The instruction is
optional, but so is tlbie (how I understood it is that both exist,
when the architecture implementation has a TLB). And the former loop
looked just scary.
* Implemented arch_cpu_user_TLB_invalidate(). It does just the same as
arch_cpu_global_TLB_invalidate().
* Some changes with respect to synchronization required on page table
and segment register updates.
* Some more minor renaming. Pulled a new function
remove_page_table_entry() out of unmap_tmap().
* In arch_vm_translation_map_init_post_area() we do now remap the page
table into the kernel address space, if it was without before. The
page table might actually be a good application for BAT, though.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15773 a95241bf-73f2-0310-859d-f6bbb57e9c96
this saves 4 bytes per page. To compensate the loss of bytes, the offset is now
stored in page size units, that's enough to address 2^44 or 16 TB (which is now
the maximal supported file size!).
* Renamed vm_page::ppn to physical_page_number.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15637 a95241bf-73f2-0310-859d-f6bbb57e9c96
arch/*/thread_struct.h to arch_thread_types.h, so that it can directly
be included without having to specify the architecure.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15616 a95241bf-73f2-0310-859d-f6bbb57e9c96
kernel TLBs from being flushed on context switch.
* new arch_cpu_user_TLB_invalidate() that now does what arch_cpu_global_TLB_invalidate()
did before.
* arch_cpu_global_TLB_invalidate() will now flush all TLBs, even those from the
kernel.
* some cleanups.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15535 a95241bf-73f2-0310-859d-f6bbb57e9c96
* The boot loader now checks the CPU for the cpuid and rdtsc features, which we
currently both rely on.
* Removed old and no longer used stage2_priv.h header
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15534 a95241bf-73f2-0310-859d-f6bbb57e9c96
has not yet been tested, though - I'll do this after this commit):
* Removed the arch_memory_type stuff from vm_area; since there are only 8 memory
ranges on x86, it's simply overkill. The MTRR code now remembers the area ID
and finds the MTRR that way (it could also iterate over the existing MTRRs).
* Introduced some post_modules() init functions.
* If the other x86 CPUs out there don't differ a lot, MTRR functionality might
be put back into the kernel.
* x86_write_msr() was broken, it wrote the 64 bit number with the 32 bit words
switched - it took me some time (and lots of #GPs) to figure that one out.
* Removed the macro read_ebp() and introduced a function x86_read_ebp()
(it's not really a time critical call).
* Followed the Intel docs on how to change MTRRs (symmetrically on all CPUs
with caches turned off).
* Asking for memory types will automatically change the requested length to
a power of two - note that BeOS seems to behave in the same, although that's
not really very clean.
* fixed MTRRs are ignored for now - we should make sure at least, though,
that they are identical on all CPUs (or turn them off, even though I'd
prefer the BIOS stuff to be uncacheable, which we don't enforce yet, though).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15528 a95241bf-73f2-0310-859d-f6bbb57e9c96
to be able to follow the stack trace into userland.
No symbols there, yet, though.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14697 a95241bf-73f2-0310-859d-f6bbb57e9c96
* there is now a "Disable Hyper-Threading" safemode in the boot loader
* the SMP & HT menu items are now added in smp.cpp - and are only added
if the system supports one of them.
* more cleanup to smp_apic.h
* removed cpuid() from the boot loader's support.S - instead, it will now
use the one from the kernel.
* added a very weak HT detection: if the MP config only listed one CPU,
and this CPU supports HT, we enable the other logic processor manually -
as this currently doesn't work, it's disabled, though.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14536 a95241bf-73f2-0310-859d-f6bbb57e9c96
part of the base table, not the extended table.
Renamed some structure fields, variables to be clearer and nicer to read.
Removed some unused stuff.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14502 a95241bf-73f2-0310-859d-f6bbb57e9c96
your system, I've also added a "Disable SMP" safemode option. The NO_SMP
define is still there, and will be removed once SMP works flawlessly.
Prints out infos about the interrupt entries in the MP config.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14499 a95241bf-73f2-0310-859d-f6bbb57e9c96
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
