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typedef struct Conf Conf;
typedef struct Confmem Confmem;
typedef struct FPsave FPsave;
typedef struct PFPU PFPU;
typedef struct KMap KMap;
typedef struct Lance Lance;
typedef struct Lancemem Lancemem;
typedef struct Label Label;
typedef struct Lock Lock;
typedef struct Mach Mach;
typedef struct MMU MMU;
typedef struct PMMU PMMU;
typedef struct Softtlb Softtlb;
typedef struct Ureg Ureg;
typedef struct Proc Proc;
typedef struct ISAConf ISAConf;
typedef uvlong Tval;
#define MAXSYSARG 5 /* for mount(fd, afd, mpt, flag, arg) */
/*
* parameters for sysproc.c and rebootcmd.c
*/
#define AOUT_MAGIC V_MAGIC || magic==M_MAGIC
/* r3k or r4k boot images */
#define BOOT_MAGIC (0x160<<16) || magic == ((0x160<<16)|3)
/*
* machine dependent definitions used by ../port/dat.h
*/
struct Lock
{
ulong key; /* semaphore (non-zero = locked) */
ulong sr;
ulong pc;
Proc *p;
Mach *m;
ushort isilock;
};
struct Label
{
uintptr sp;
uintptr pc;
};
struct Confmem
{
ulong base;
ulong npage;
ulong kbase;
ulong klimit;
};
struct Conf
{
ulong nmach; /* processors */
ulong nproc; /* processes */
Confmem mem[4];
ulong npage; /* total physical pages of memory */
ulong upages; /* user page pool */
ulong nimage; /* number of page cache image headers */
ulong nswap; /* number of swap pages */
int nswppo; /* max # of pageouts per segment pass */
ulong copymode; /* 0 is copy on write, 1 is copy on reference */
ulong ialloc; /* bytes available for interrupt-time allocation */
ulong pipeqsize; /* size in bytes of pipe queues */
int nuart; /* number of uart devices */
int monitor;
int keyboard;
};
struct ISAConf
{
char *type;
ulong port;
int irq;
int nopt;
char *opt[1];
};
#define BUSUNKNOWN -1
/*
* floating point registers
*/
enum {
Nfpregs = 32, /* floats; half as many doubles */
};
/*
* emulated floating point (mips32r2 with ieee fp regs)
* fpstate is separate, kept in Proc
*/
struct FPsave
{
/* /dev/proc expects the registers to be first in FPsave */
ulong reg[Nfpregs]; /* the canonical bits */
union {
ulong fpstatus; /* both are fcr31 */
ulong fpcontrol;
};
int fpdelayexec; /* executing delay slot of branch */
uintptr fpdelaypc; /* pc to resume at after */
ulong fpdelaysts; /* save across user-mode delay-slot execution */
/* stuck-fault detection */
uintptr fppc; /* addr of last fault */
int fpcnt; /* how many consecutive at that addr */
};
struct PFPU
{
int fpstate;
FPsave fpsave[1];
};
enum
{
/* floating point state */
FPinit,
FPactive,
FPinactive,
FPemu,
/* bit meaning floating point illegal */
FPillegal= 0x100,
};
/*
* mmu goo in the Proc structure
*/
struct PMMU
{
int pidonmach[MAXMACH];
};
#include "../port/portdat.h"
struct Mach
{
/* the following are all known by l.s and cannot be moved */
int machno; /* physical id of processor */
Softtlb*stb;
Proc* proc; /* process on this processor */
uintptr splpc; /* pc that called splhi() */
ulong tlbfault;
/* the following is safe to move */
PMach;
int lastpid; /* last pid allocated on this machine */
Proc* pidproc[NTLBPID]; /* proc that owns tlbpid on this mach */
KMap* kactive; /* active on this machine */
int knext;
uchar ktlbx[NTLB]; /* tlb index used for kmap */
uchar ktlbnext;
/* for per-processor timers */
uvlong fastticks;
ulong lastcount;
ulong hz;
int speed; /* cpu speed */
ulong delayloop; /* for the delay() routine */
ulong maxperiod;
ulong minperiod;
int hashcoll; /* soft-tlb hash collisions */
int paststartup; /* for putktlb */
uintptr stack[1];
};
struct KMap
{
Ref;
ulong virt;
ulong phys0;
ulong phys1;
KMap* next;
KMap* konmach[MAXMACH];
Page* pg;
ulong pc; /* of caller to kmap() */
};
#define VA(k) ((k)->virt)
#define PPN(x) ((ulong)(x)>>6)
struct Softtlb
{
ulong virt;
ulong phys0;
ulong phys1;
};
struct
{
char machs[MAXMACH]; /* active cpus */
short exiting;
}active;
extern register Mach *m;
extern register Proc *up;
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