src-test2/sys/amd64/include/sysarch.h, branch releng/11.2

Copy amd64 sysarch.h to x86 and merge with i386 sysarch.h. Replace

2012-03-19T21:57:31Z

amd64/i386/pc98 sysarch.h with stubs.

Add support for the extended FPU states on amd64, both for native

2012-01-21T17:45:27Z

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 on behalf of Sony. This version was written from scratch. Tested by: pho (previous version), Yamagi Burmeister MFC after: 1 month

Remove redundant inclusion of .

2010-02-20T14:13:47Z

In my previous commit I should have moved the inclusion to the top, instead of adding a second one.

Add .

2010-02-20T13:33:50Z

This header file uses __packed, without including . This means it cannot be used in the way described in sysarch(3) by only including .

Save and restore segment registers on amd64 when entering and leaving

2009-04-01T13:09:26Z

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

Fully enumerate all i386 sysarch commands an amd64 include file.

2009-04-01T12:48:17Z

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

Implement 32-bit compatable fsbase/gsbase methods so that we can run

2005-04-14T16:57:58Z

(newer) unmodified static i386 binaries again.

Remove advertising clause from University of California Regent's license,

2004-04-05T21:29:41Z

per letter dated July 22, 1999. Approved by: core

Provide sysarch(2) prototypes in the MD sysarch.h headers. While I'm

2004-01-09T16:52:09Z

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

Use a more robust API altogether for the amd64_get_fsbase() etc functions.

2003-10-23T06:06:14Z