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23090366 |
| 04-Nov-2012 |
Simon J. Gerraty <sjg@FreeBSD.org> |
Sync from head
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e11b6fa3 |
| 03-Aug-2012 |
Gleb Smirnoff <glebius@FreeBSD.org> |
Merge head r233826 through r239010.
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1e39a4bc |
| 21-Jul-2012 |
Konstantin Belousov <kib@FreeBSD.org> |
MFCamd64 r238598: Provide siginfo.si_code for floating point errors when error occurs using the SSE math processor.
MFC after: 3 weeks
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6a068746 |
| 15-May-2012 |
Alexander Motin <mav@FreeBSD.org> |
MFC
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38f1b189 |
| 26-Apr-2012 |
Peter Grehan <grehan@FreeBSD.org> |
IFC @ r234692
sys/amd64/include/cpufunc.h sys/amd64/include/fpu.h sys/amd64/amd64/fpu.c sys/amd64/vmm/vmm.c
- Add API to allow vmm FPU state init/save/restore.
FP stuff discussed with: kib
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Revision tags: release/8.3.0_cvs, release/8.3.0 |
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8833b15f |
| 03-Apr-2012 |
Gleb Smirnoff <glebius@FreeBSD.org> |
Merge head r232686 through r233825 into projects/pf/head.
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78664507 |
| 16-Mar-2012 |
Tijl Coosemans <tijl@FreeBSD.org> |
Move userland bits of i386 npx.h and amd64 fpu.h to x86 fpu.h. Remove FPU types from compat/ia32/ia32_reg.h that are no longer needed. Create machine/npx.h on amd64 to allow compiling i386 code that
Move userland bits of i386 npx.h and amd64 fpu.h to x86 fpu.h. Remove FPU types from compat/ia32/ia32_reg.h that are no longer needed. Create machine/npx.h on amd64 to allow compiling i386 code that uses this header.
The original npx.h and fpu.h define struct envxmm differently. Both definitions have been included in the new x86 header as struct __envxmm32 and struct __envxmm64. During compilation either __envxmm32 or __envxmm64 is defined as envxmm depending on machine architecture. On amd64 the i386 struct is also available as struct envxmm32.
Reviewed by: kib
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545193ce |
| 16-Mar-2012 |
Tijl Coosemans <tijl@FreeBSD.org> |
Use exact width integer types instead of long in struct env87 in preparation to merge with amd64.
Reviewed by: kib
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8fa0b743 |
| 23-Jan-2012 |
Xin LI <delphij@FreeBSD.org> |
IFC @230489 (pending review).
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8c6f8f3d |
| 21-Jan-2012 |
Konstantin Belousov <kib@FreeBSD.org> |
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
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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6db9cf55 |
| 17-Jan-2012 |
Konstantin Belousov <kib@FreeBSD.org> |
Add definitions for the FPU extended state header, legacy extended state and AVX state.
MFC after: 1 week
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Revision tags: release/9.0.0, release/7.4.0_cvs, release/8.2.0_cvs, release/7.4.0, release/8.2.0 |
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0c21a60c |
| 05-Dec-2010 |
Marcel Moolenaar <marcel@FreeBSD.org> |
svn+ssh://svn.freebsd.org/base/head@216199
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2006fbc8 |
| 02-Dec-2010 |
Dimitry Andric <dim@FreeBSD.org> |
Sync: merge r215944 through r216132 from ^/head.
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5c6eb037 |
| 26-Nov-2010 |
Konstantin Belousov <kib@FreeBSD.org> |
Remove npxgetregs(), npxsetregs(), fpugetregs() and fpusetregs() functions, they are unused. Remove 'user' from npxgetuserregs() etc. names.
For {npx,fpu}{get,set}regs(), always use pcb->pcb_user_sa
Remove npxgetregs(), npxsetregs(), fpugetregs() and fpusetregs() functions, they are unused. Remove 'user' from npxgetuserregs() etc. names.
For {npx,fpu}{get,set}regs(), always use pcb->pcb_user_save for FPU context storage. This eliminates the need for ugly copying with overwrite of the newly added and reserved fields in ucontext on i386 to satisfy alignment requirements for fpusave() and fpurstor().
pc98 version was copied from i386.
Suggested and reviewed by: bde Tested by: pho (i386 and amd64) MFC after: 1 week
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Revision tags: release/8.1.0_cvs, release/8.1.0 |
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d6c18050 |
| 07-Jul-2010 |
Marcel Moolenaar <marcel@FreeBSD.org> |
Merge svn+ssh://svn.freebsd.org/base/head@209749
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699d648a |
| 23-Jun-2010 |
Konstantin Belousov <kib@FreeBSD.org> |
Remove the support for int13 FPU exception reporting on i386. It is believed that all 486-class CPUs FreeBSD is capable to run on, either have no FPU and cannot use external coprocessor, or have FPU
Remove the support for int13 FPU exception reporting on i386. It is believed that all 486-class CPUs FreeBSD is capable to run on, either have no FPU and cannot use external coprocessor, or have FPU on the package and can use #MF.
Reviewed by: bde Tested by: pho (previous version)
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970c23b2 |
| 06-Jun-2010 |
Marcel Moolenaar <marcel@FreeBSD.org> |
Merge svn+ssh://svn.freebsd.org/base/head@208879
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6cf9a08d |
| 05-Jun-2010 |
Konstantin Belousov <kib@FreeBSD.org> |
Introduce the x86 kernel interfaces to allow kernel code to use FPU/SSE hardware. Caller should provide a save area that is chained into the stack of the areas; pcb save_area for usermode FPU state i
Introduce the x86 kernel interfaces to allow kernel code to use FPU/SSE hardware. Caller should provide a save area that is chained into the stack of the areas; pcb save_area for usermode FPU state is on top. The pcb now contains a pointer to the current FPU saved area, used during FPUDNA handling and context switches. There is also a facility to allow the kernel thread to use pcb save_area.
Change the dreaded warnings "npxdna in kernel mode!" into the panics when FPU usage is not registered.
KPI discussed with: fabient Tested by: pho, fabient Hardware provided by: Sentex Communications MFC after: 1 month
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Revision tags: release/7.3.0_cvs, release/7.3.0, release/8.0.0_cvs, release/8.0.0 |
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10b3b545 |
| 17-Sep-2009 |
Dag-Erling Smørgrav <des@FreeBSD.org> |
Merge from head
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Revision tags: release/7.2.0_cvs, release/7.2.0 |
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1829d5da |
| 12-Mar-2009 |
Warner Losh <imp@FreeBSD.org> |
Update the projects tree to a newer FreeBSD current.
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20e9dede |
| 05-Mar-2009 |
John Baldwin <jhb@FreeBSD.org> |
Some cleanups to the i386 FPU support: - Remove the control word parameter to npxinit(). It was always set to __INITIAL_NPXCW__. - Remove npx_cleanstate_ready as the cleanstate is always initalize
Some cleanups to the i386 FPU support: - Remove the control word parameter to npxinit(). It was always set to __INITIAL_NPXCW__. - Remove npx_cleanstate_ready as the cleanstate is always initalized when it is used. - Improve the handling of the case when the FPU isn't present. Now the npx0 device no longer succeeds in its probe so all of npx_attach() is skipped. Also, we allow this case with SMP (though that shouldn't actually occur as all i386 systems that support SMP have FPUs) now. SMP was only an issue back when we had an FPU emulator which was not per-CPU. - MFamd64: Clear some of the state in npx_cleanstate rather than leaving it as garbage. - MFamd64: When a user thread first uses the FPU, use npx_cleanstate for the initial FPU state.
Reviewed by: bde
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Revision tags: release/7.1.0_cvs, release/7.1.0, release/6.4.0_cvs, release/6.4.0, release/7.0.0_cvs, release/7.0.0, release/6.3.0_cvs, release/6.3.0, release/6.2.0_cvs, release/6.2.0 |
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afedf1a7 |
| 31-May-2006 |
David Xu <davidxu@FreeBSD.org> |
Use the method described in IA-32 Intel Architecture Software Developer's Manual chapter 11.6.6 to get valid mxcsr bits, use the mxcsr mask to clear invalid bits passed by user code.
Reviewed by: bde
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5d84379d |
| 29-May-2006 |
David Xu <davidxu@FreeBSD.org> |
Backout changes trying to inherit floating-point environment, although POSIX (susv3) requires this, but it is unclear what should be inherited, duplicating whole 387 stack for new thread seems to be
Backout changes trying to inherit floating-point environment, although POSIX (susv3) requires this, but it is unclear what should be inherited, duplicating whole 387 stack for new thread seems to be unnecessary and dangerous. Revert to previous code, force a new thread to be started with clean FP state.
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38fd7487 |
| 28-May-2006 |
David Xu <davidxu@FreeBSD.org> |
When creating a new thread, inherit floating-point environment from current thread, this is required by POSIX pthread_create document.
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Revision tags: release/5.5.0_cvs, release/5.5.0, release/6.1.0_cvs, release/6.1.0, release/6.0.0_cvs, release/6.0.0 |
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164e09dd |
| 12-May-2005 |
Yoshihiro Takahashi <nyan@FreeBSD.org> |
- Move the NPX_DEBUG option to options.{i386,pc98} and use opt_npx.h. - Move npx related defines to {i386,pc98}/include/npx.h to remove #include {isa,cbus}.h.
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