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302408 |
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07-Jul-2016 |
gjb |
Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle. Prune svn:mergeinfo from the new branch, as nothing has been merged here.
Additional commits post-branch will follow.
Approved by: re (implicit) Sponsored by: The FreeBSD Foundation |
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233209 |
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19-Mar-2012 |
tijl |
Copy amd64 sysarch.h to x86 and merge with i386 sysarch.h. Replace amd64/i386/pc98 sysarch.h with stubs.
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230426 |
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21-Jan-2012 |
kib |
Add support for the extended FPU states on amd64, both for native 64bit and 32bit ABIs. As a side-effect, it enables AVX on capable CPUs.
In particular:
- Query the CPU support for XSAVE, list of the supported extensions and the required size of FPU save area. The hw.use_xsave tunable is provided for disabling XSAVE, and hw.xsave_mask may be used to select the enabled extensions.
- Remove the FPU save area from PCB and dynamically allocate the (run-time sized) user save area on the top of the kernel stack, right above the PCB. Reorganize the thread0 PCB initialization to postpone it after BSP is queried for save area size.
- The dumppcb, stoppcbs and susppcbs now do not carry the FPU state as well. FPU state is only useful for suspend, where it is saved in dynamically allocated suspfpusave area.
- Use XSAVE and XRSTOR to save/restore FPU state, if supported and enabled.
- Define new mcontext_t flag _MC_HASFPXSTATE, indicating that mcontext_t has a valid pointer to out-of-struct extended FPU state. Signal handlers are supplied with stack-allocated fpu state. The sigreturn(2) and setcontext(2) syscall honour the flag, allowing the signal handlers to inspect and manipilate extended state in the interrupted context.
- The getcontext(2) never returns extended state, since there is no place in the fixed-sized mcontext_t to place variable-sized save area. And, since mcontext_t is embedded into ucontext_t, makes it impossible to fix in a reasonable way. Instead of extending getcontext(2) syscall, provide a sysarch(2) facility to query extended FPU state.
- Add ptrace(2) support for getting and setting extended state; while there, implement missed PT_I386_{GET,SET}XMMREGS for 32bit binaries.
- Change fpu_kern KPI to not expose struct fpu_kern_ctx layout to consumers, making it opaque. Internally, struct fpu_kern_ctx now contains a space for the extended state. Convert in-kernel consumers of fpu_kern KPI both on i386 and amd64.
First version of the support for AVX was submitted by Tim Bird <tim.bird am sony com> on behalf of Sony. This version was written from scratch.
Tested by: pho (previous version), Yamagi Burmeister <lists yamagi org> MFC after: 1 month
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204120 |
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20-Feb-2010 |
ed |
Remove redundant inclusion of <sys/cdefs.h>.
In my previous commit I should have moved the inclusion to the top, instead of adding a second one.
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204118 |
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20-Feb-2010 |
ed |
Add <sys/cdefs.h>.
This header file uses __packed, without including <sys/cdefs.h>. This means it cannot be used in the way described in sysarch(3) by only including <machine/sysarch.h>.
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190620 |
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01-Apr-2009 |
kib |
Save and restore segment registers on amd64 when entering and leaving the kernel on amd64. Fill and read segment registers for mcontext and signals. Handle traps caused by restoration of the invalidated selectors.
Implement user-mode creation and manipulation of the process-specific LDT descriptors for amd64, see sysarch(2).
Implement support for TSS i/o port access permission bitmap for amd64.
Context-switch LDT and TSS. Do not save and restore segment registers on the context switch, that is handled by kernel enter/leave trampolines now. Remove segment restore code from the signal trampolines for freebsd/amd64, freebsd/ia32 and linux/i386 for the same reason.
Implement amd64-specific compat shims for sysarch.
Linuxolator (temporary ?) switched to use gsbase for thread_area pointer.
TODO: Currently, gdb is not adapted to show segment registers from struct reg. Also, no machine-depended ptrace command is added to set segment registers for debugged process.
In collaboration with: pho Discussed with: peter Reviewed by: jhb Linuxolator tested by: dchagin
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190618 |
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01-Apr-2009 |
kib |
Fully enumerate all i386 sysarch commands an amd64 include file.
Provides i386/freebsd API-compatible definitions for the argument structures of the above sysarch commands. struct i386_ioperm_args definition is ABI-compatible.
In collaboration with: pho Reviewed by: jhb
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145077 |
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14-Apr-2005 |
peter |
Implement 32-bit compatable fsbase/gsbase methods so that we can run (newer) unmodified static i386 binaries again.
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127914 |
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05-Apr-2004 |
imp |
Remove advertising clause from University of California Regent's license, per letter dated July 22, 1999.
Approved by: core
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124296 |
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09-Jan-2004 |
nectar |
Provide sysarch(2) prototypes in the MD sysarch.h headers. While I'm at it, use the ANSI C generic pointer type for the second argument, thus matching the documentation.
Remove the now extraneous (and now conflicting) function declarations in various libc sources. Remove now unnecessary casts.
Reviewed by: bde
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121405 |
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23-Oct-2003 |
peter |
Use a more robust API altogether for the amd64_get_fsbase() etc functions.
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121398 |
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23-Oct-2003 |
peter |
Renumber the sysarch vectors for amd64 specific syscalls so that I can implement i386 compat numbers where it makes sense. This would save a syscall translation layer. Yes, this breaks the abi slightly again, but fortunately its just a recompile rather than tweaking the source. I will be fixing the libc stubs while I'm here.
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114928 |
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12-May-2003 |
peter |
Give a %fs and %gs to userland. Use swapgs to obtain the kernel %GS.base value on entry and exit. This isn't as easy as it sounds because when we recursively trap or interrupt, we have to avoid duplicating the swapgs instruction or we end up back with the userland %gs. I implemented this by testing TF_CS to see if we're coming from supervisor mode already, and check for returning to supervisor. To avoid a race with interrupts in the brief period after beginning executing the handler and before the swapgs, convert all trap gates to interrupt gates, and reenable interrupts immediately after the swapgs. I am not happy with this. There are other possible ways to do this that should be investigated. (eg: storing the GS.base MSR value in the trapframe)
Add some sysarch functions to let the userland code get to this.
Approved by: re (blanket amd64/*)
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114349 |
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30-Apr-2003 |
peter |
Commit MD parts of a loosely functional AMD64 port. This is based on a heavily stripped down FreeBSD/i386 (brutally stripped down actually) to attempt to get a stable base to start from. There is a lot missing still. Worth noting: - The kernel runs at 1GB in order to cheat with the pmap code. pmap uses a variation of the PAE code in order to avoid having to worry about 4 levels of page tables yet. - It boots in 64 bit "long mode" with a tiny trampoline embedded in the i386 loader. This simplifies locore.s greatly. - There are still quite a few fragments of i386-specific code that have not been translated yet, and some that I cheated and wrote dumb C versions of (bcopy etc). - It has both int 0x80 for syscalls (but using registers for argument passing, as is native on the amd64 ABI), and the 'syscall' instruction for syscalls. int 0x80 preserves all registers, 'syscall' does not. - I have tried to minimize looking at the NetBSD code, except in a couple of places (eg: to find which register they use to replace the trashed %rcx register in the syscall instruction). As a result, there is not a lot of similarity. I did look at NetBSD a few times while debugging to get some ideas about what I might have done wrong in my first attempt.
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104110 |
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28-Sep-2002 |
peter |
There is no need for start/num to be signed in i386_ldt_args.
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92761 |
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20-Mar-2002 |
alfred |
Remove __P.
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90134 |
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03-Feb-2002 |
markm |
Make the style a little bit more consistant by removing parameter names from some prototypes. (Other prototypes here already have these removed).
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66174 |
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21-Sep-2000 |
bsd |
Add a couple of debug register helper functions to assist in setting and clearing watchpoints.
Reviewed by: jwd@FreeBSD.org, -hackers@
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55205 |
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29-Dec-1999 |
peter |
Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL" is an application space macro and the applications are supposed to be free to use it as they please (but cannot). This is consistant with the other BSD's who made this change quite some time ago. More commits to come.
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50816 |
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02-Sep-1999 |
luoqi |
Some reorganization of sysarch() interface: 1. Move definitions of struct i386_*_args to the header file sysarch.h, since they are part of the sysarch API. struct i386_get_ldt_args and i386_set_ldt_args were identical, therefore make them into one struct i386_ldt_args. Libc should use these definitions as well. 2. Return a more sensible EOPNOTSUPP for unknown operations.
Reviewed by: marcel
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50477 |
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27-Aug-1999 |
peter |
$Id$ -> $FreeBSD$
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37917 |
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28-Jul-1998 |
jlemon |
u_int --> unsigned int, remove (now unneeded) <sys/types.h>
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37903 |
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28-Jul-1998 |
jlemon |
Add wrappers for i386_*_ioperm, i386_vm86 so userland code does not have to call sysarch() directly. Added man pages for above, as well as sysarch()
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33049 |
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03-Feb-1998 |
bde |
Forward declare a union so that this file is self-sufficient.
Cleaned up ifdefs.
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27993 |
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08-Aug-1997 |
dyson |
VM86 kernel support. Work done by BSDI, Jonathan Lemon <jlemon@americantv.com>, Mike Smith <msmith@gsoft.com.au>, Sean Eric Fagan <sef@kithrup.com>, and probably alot of others. Submitted by: Jnathan Lemon <jlemon@americantv.com>
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22975 |
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22-Feb-1997 |
peter |
Back out part 1 of the MCFH that changed $Id$ to $FreeBSD$. We are not ready for it yet.
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21673 |
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14-Jan-1997 |
jkh |
Make the long-awaited change from $Id$ to $FreeBSD$
This will make a number of things easier in the future, as well as (finally!) avoiding the Id-smashing problem which has plagued developers for so long.
Boy, I'm glad we're not using sup anymore. This update would have been insane otherwise.
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1817 |
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02-Aug-1994 |
dg |
Added $Id$
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719 |
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07-Nov-1993 |
wollman |
Made all header files idempotent and moved incorrect common data from headers into a related source file. Added cons.h as first step towards moving i386/i386/cons.h to machine/cons.h where it belongs.
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621 |
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16-Oct-1993 |
rgrimes |
Removed all patch kit headers, sccsid and rcsid strings, put $Id$ in, some minor cleanup. Added $Id$ to files that did not have any version info, etc
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550 |
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08-Oct-1993 |
rgrimes |
Architecture specific syscalls (i386) from NetBSD
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