src/sys/amd64/include/cpu.h, branch releng/5.3FreeBSD source treehttps://cgit-dev.freebsd.org/src/atom?h=releng%2F5.32004-08-03T18:44:27ZInstead of calling ia32_pause() conditionally on __i386__ or __amd64__2004-08-03T18:44:27ZMaxime Henrionmux@FreeBSD.org2004-08-03T18:44:27Zurn:sha1:9f1b87f106100470dafeeab83abfa98ab86be3f7
being defined, define and use a new MD macro, cpu_spinwait(). It only
expands to something on i386 and amd64, so the compiled code should be
identical.
Name of the macro found by: jhb
Reviewed by: jhb
Backed out previous commit. Blind substitution of dev_t by `struct cdev *'2004-06-20T03:52:50ZBruce Evansbde@FreeBSD.org2004-06-20T03:52:50Zurn:sha1:4c5f10a672b9f20238f26fa9add2c043bbfd0e14
was just wrong here because the dev_t's are user dev_t's.
Do the dreaded s/dev_t/struct cdev */2004-06-16T09:47:26ZPoul-Henning Kampphk@FreeBSD.org2004-06-16T09:47:26Zurn:sha1:89c9c53da05197f657dfe8e0bdda6941a2e9a0d4
Bump __FreeBSD_version accordingly.
Remove advertising clause from University of California Regent's license,2004-04-05T21:29:41ZWarner Loshimp@FreeBSD.org2004-04-05T21:29:41Zurn:sha1:29ae923f442cca68a051d4d299dae535758b44d4
per letter dated July 22, 1999.
Approved by: core
Sync with i386 version. The quality initialization was missing and some2003-09-23T00:18:45ZPeter Wemmpeter@FreeBSD.org2003-09-23T00:18:45Zurn:sha1:cd3402fa66d3c890282810a2604b6a57f627fc1b
other junk.
Further cleanup <machine/cpu.h> and <machine/md_var.h>: move the MI2003-08-16T16:57:57ZMarcel Moolenaarmarcel@FreeBSD.org2003-08-16T16:57:57Zurn:sha1:26502503e57448b879c9293f18ad778c2f7e5f78
prototypes of cpu_halt(), cpu_reset() and swi_vm() from md_var.h to
cpu.h. This affects db_command.c and kern_shutdown.c.
ia64: move all MD prototypes from cpu.h to md_var.h. This affects
madt.c, interrupt.c and mp_machdep.c. Remove is_physical_memory().
It's not used (vm_machdep.c).
alpha: the MD prototypes have been left in cpu.h with a comment
that they should be there. Moving them is left for later. It was
expected that the impact would be significant enough to be done in
a seperate commit.
powerpc: MD prototypes left in cpu.h. Comment added.
Suggested by: bde
Tested with: make universe (pc98 incomplete)
Commit MD parts of a loosely functional AMD64 port. This is based on2003-05-01T01:05:25ZPeter Wemmpeter@FreeBSD.org2003-05-01T01:05:25Zurn:sha1:afa8862328041298fe0c059d65cea406f92bad4b
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.
Make get_cyclecount() use binuptime() when no tsc is available: it is cheaper.2003-02-05T08:55:10ZPoul-Henning Kampphk@FreeBSD.org2003-02-05T08:55:10Zurn:sha1:553ebddc5923af76bdcaef290219a903d914de43Remove __P.2002-03-20T05:48:58ZAlfred Perlsteinalfred@FreeBSD.org2002-03-20T05:48:58Zurn:sha1:b63dc6ad473b82b196386d0c3dcbd1056cea81dfOverhaul the per-CPU support a bit:2001-12-11T23:33:44ZJohn Baldwinjhb@FreeBSD.org2001-12-11T23:33:44Zurn:sha1:0bbc882680ceece07eb134ddeb7fceffb59ea018
- The MI portions of struct globaldata have been consolidated into a MI
struct pcpu. The MD per-CPU data are specified via a macro defined in
machine/pcpu.h. A macro was chosen over a struct mdpcpu so that the
interface would be cleaner (PCPU_GET(my_md_field) vs.
PCPU_GET(md.md_my_md_field)).
- All references to globaldata are changed to pcpu instead. In a UP kernel,
this data was stored as global variables which is where the original name
came from. In an SMP world this data is per-CPU and ideally private to each
CPU outside of the context of debuggers. This also included combining
machine/globaldata.h and machine/globals.h into machine/pcpu.h.
- The pointer to the thread using the FPU on i386 was renamed from
npxthread to fpcurthread to be identical with other architectures.
- Make the show pcpu ddb command MI with a MD callout to display MD
fields.
- The globaldata_register() function was renamed to pcpu_init() and now
init's MI fields of a struct pcpu in addition to registering it with
the internal array and list.
- A pcpu_destroy() function was added to remove a struct pcpu from the
internal array and list.
Tested on: alpha, i386
Reviewed by: peter, jake