2011-03-30 12:46:40 +00:00
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typedef struct Conf Conf;
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kernel: introduce per process FPU struct (PFPU) for more flexible machine specific fpu handling
introducing the PFPU structue which allows the machine specific
code some flexibility on how to handle the FPU process state.
for example, in the pc and pc64 kernel, the FPsave structure is
arround 512 bytes. with avx512, it could grow up to 2K. instead
of embedding that into the Proc strucutre, it is more effective
to allocate it on first use of the fpu, as most processes do not
use simd or floating point in the first place. also, the FPsave
structure has special 16 byte alignment constraint, which further
favours dynamic allocation.
this gets rid of the memmoves in pc/pc64 kernels for the aligment.
there is also devproc, which is now checking if the fpsave area
is actually valid before reading it, avoiding debuggers to see
garbage data.
the Notsave structure is gone now, as it was not used on any
machine.
2017-11-04 19:08:22 +00:00
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typedef struct Confmem Confmem;
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2011-03-30 12:46:40 +00:00
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typedef struct FPsave FPsave;
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kernel: introduce per process FPU struct (PFPU) for more flexible machine specific fpu handling
introducing the PFPU structue which allows the machine specific
code some flexibility on how to handle the FPU process state.
for example, in the pc and pc64 kernel, the FPsave structure is
arround 512 bytes. with avx512, it could grow up to 2K. instead
of embedding that into the Proc strucutre, it is more effective
to allocate it on first use of the fpu, as most processes do not
use simd or floating point in the first place. also, the FPsave
structure has special 16 byte alignment constraint, which further
favours dynamic allocation.
this gets rid of the memmoves in pc/pc64 kernels for the aligment.
there is also devproc, which is now checking if the fpsave area
is actually valid before reading it, avoiding debuggers to see
garbage data.
the Notsave structure is gone now, as it was not used on any
machine.
2017-11-04 19:08:22 +00:00
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typedef struct PFPU PFPU;
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2011-03-30 12:46:40 +00:00
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typedef struct ISAConf ISAConf;
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typedef struct Imap Imap;
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typedef struct Label Label;
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typedef struct Lock Lock;
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typedef struct Mach Mach;
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typedef struct PCArch PCArch;
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typedef struct PMMU PMMU;
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typedef struct Page Page;
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typedef struct Pcidev Pcidev;
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typedef struct Proc Proc;
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typedef struct Sys Sys;
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typedef struct Ureg Ureg;
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typedef struct Vctl Vctl;
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kernel: introduce per process FPU struct (PFPU) for more flexible machine specific fpu handling
introducing the PFPU structue which allows the machine specific
code some flexibility on how to handle the FPU process state.
for example, in the pc and pc64 kernel, the FPsave structure is
arround 512 bytes. with avx512, it could grow up to 2K. instead
of embedding that into the Proc strucutre, it is more effective
to allocate it on first use of the fpu, as most processes do not
use simd or floating point in the first place. also, the FPsave
structure has special 16 byte alignment constraint, which further
favours dynamic allocation.
this gets rid of the memmoves in pc/pc64 kernels for the aligment.
there is also devproc, which is now checking if the fpsave area
is actually valid before reading it, avoiding debuggers to see
garbage data.
the Notsave structure is gone now, as it was not used on any
machine.
2017-11-04 19:08:22 +00:00
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typedef long Tval;
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2011-03-30 12:46:40 +00:00
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#pragma incomplete Ureg
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#pragma incomplete Imap
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#define MAXSYSARG 5 /* for mount(fd, mpt, flag, arg, srv) */
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/*
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* parameters for sysproc.c
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*/
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#define AOUT_MAGIC Q_MAGIC
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/*
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* machine dependent definitions used by ../port/dat.h
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*/
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struct Lock
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{
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ulong key; /* semaphore (non-zero = locked) */
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ulong sr;
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ulong pc;
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Proc *p;
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ulong pid;
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ushort isilock;
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};
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struct Label
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{
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ulong sp;
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ulong pc;
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};
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/*
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* This structure must agree with fpsave and fprestore asm routines
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*/
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struct FPsave
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{
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double fpreg[32];
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union {
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double fpscrd;
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struct {
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ulong pad;
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ulong fpscr;
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};
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};
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};
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kernel: introduce per process FPU struct (PFPU) for more flexible machine specific fpu handling
introducing the PFPU structue which allows the machine specific
code some flexibility on how to handle the FPU process state.
for example, in the pc and pc64 kernel, the FPsave structure is
arround 512 bytes. with avx512, it could grow up to 2K. instead
of embedding that into the Proc strucutre, it is more effective
to allocate it on first use of the fpu, as most processes do not
use simd or floating point in the first place. also, the FPsave
structure has special 16 byte alignment constraint, which further
favours dynamic allocation.
this gets rid of the memmoves in pc/pc64 kernels for the aligment.
there is also devproc, which is now checking if the fpsave area
is actually valid before reading it, avoiding debuggers to see
garbage data.
the Notsave structure is gone now, as it was not used on any
machine.
2017-11-04 19:08:22 +00:00
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struct PFPU
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{
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int fpstate;
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FPsave fpsave[1];
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};
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enum
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{
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/* Floating point states */
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FPinit = 0,
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FPactive = 1,
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FPinactive = 2,
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/* Bit that's or-ed in during note handling (FP is illegal in note handlers) */
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FPillegal = 0x100,
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};
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struct Confmem
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{
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ulong base;
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ulong npage;
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ulong kbase;
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ulong klimit;
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};
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2011-03-30 12:46:40 +00:00
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struct Conf
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{
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ulong nmach; /* processors */
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ulong nproc; /* processes */
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kernel: introduce per process FPU struct (PFPU) for more flexible machine specific fpu handling
introducing the PFPU structue which allows the machine specific
code some flexibility on how to handle the FPU process state.
for example, in the pc and pc64 kernel, the FPsave structure is
arround 512 bytes. with avx512, it could grow up to 2K. instead
of embedding that into the Proc strucutre, it is more effective
to allocate it on first use of the fpu, as most processes do not
use simd or floating point in the first place. also, the FPsave
structure has special 16 byte alignment constraint, which further
favours dynamic allocation.
this gets rid of the memmoves in pc/pc64 kernels for the aligment.
there is also devproc, which is now checking if the fpsave area
is actually valid before reading it, avoiding debuggers to see
garbage data.
the Notsave structure is gone now, as it was not used on any
machine.
2017-11-04 19:08:22 +00:00
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Confmem mem[2];
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2011-03-30 12:46:40 +00:00
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ulong npage; /* total physical pages of memory */
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ulong upages; /* user page pool */
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ulong nimage; /* number of page cache image headers */
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ulong nswap; /* number of swap pages */
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int nswppo; /* max # of pageouts per segment pass */
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ulong copymode; /* 0 is copy on write, 1 is copy on reference */
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int monitor; /* has display? */
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ulong ialloc; /* bytes available for interrupt time allocation */
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ulong pipeqsize; /* size in bytes of pipe queues */
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};
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/*
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* mmu goo in the Proc structure
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*/
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#define NCOLOR 1
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struct PMMU
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{
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int mmupid;
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Ureg *mmureg; /* pointer to ureg structure */
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};
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#include "../port/portdat.h"
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/*
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* machine dependent definitions not used by ../port/dat.h
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*/
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/*
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* Fake kmap
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*/
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typedef void KMap;
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#define VA(k) ((ulong)(k))
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#define kmap(p) (KMap*)((p)->pa|KZERO)
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#define kunmap(k)
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struct Mach
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{
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/* OFFSETS OF THE FOLLOWING KNOWN BY l.s */
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/*0x00*/ int machno; /* physical id of processor */
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/*0x04*/ ulong splpc; /* pc that called splhi() */
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/*0x08*/ Proc *proc; /* current process on this processor */
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/* Debugging/statistics for software TLB in l.s (therefore, also known by l.s) */
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/*0x0c*/ ulong tlbfault; /* type of last miss */
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/*0x10*/ ulong imiss; /* number of instruction misses */
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/*0x14*/ ulong dmiss; /* number of data misses */
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/* ordering from here on irrelevant */
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2021-04-25 15:41:34 +00:00
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PMach;
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2011-03-30 12:46:40 +00:00
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Imap* imap;
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2021-04-25 15:41:34 +00:00
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uintptr ptabbase; /* start of page table in kernel virtual space */
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int slotgen; /* next pte (byte offset) when pteg is full */
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int mmupid; /* next mmu pid to use */
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int sweepcolor;
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int trigcolor;
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Rendez sweepr;
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2011-03-30 12:46:40 +00:00
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int cputype;
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ulong loopconst;
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ulong clkin; /* basic clock frequency */
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ulong vco_out;
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vlong cpuhz;
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ulong bushz;
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ulong dechz;
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ulong tbhz;
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ulong cpmhz; /* communications processor module frequency */
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ulong brghz; /* baud rate generator frequency */
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/* MUST BE LAST */
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2021-04-25 15:41:34 +00:00
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uintptr stack[1];
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2011-03-30 12:46:40 +00:00
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};
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struct
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{
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2016-01-05 04:32:40 +00:00
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char machs[MAXMACH];
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int exiting;
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2011-03-30 12:46:40 +00:00
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}active;
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/*
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* a parsed plan9.ini line
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*/
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#define NISAOPT 8
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struct ISAConf {
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char *type;
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ulong port;
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int irq;
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ulong dma;
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ulong mem;
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ulong size;
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ulong freq;
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int nopt;
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char *opt[NISAOPT];
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};
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struct Vctl {
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Vctl* next; /* handlers on this vector */
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char name[KNAMELEN]; /* of driver */
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int isintr; /* interrupt or fault/trap */
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int irq;
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void (*f)(Ureg*, void*); /* handler to call */
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void* a; /* argument to call it with */
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};
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extern Mach mach0;
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extern register Mach *m;
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extern register Proc *up;
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extern FPsave initfp;
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