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typedef struct Conf Conf;
typedef struct Dma Dma;
typedef struct FPU FPU;
typedef struct FPenv FPenv;
typedef struct Label Label;
typedef struct Lock Lock;
typedef struct Mach Mach;
typedef struct Ureg Ureg;
typedef struct ISAConf ISAConf;
typedef struct PCMmap PCMmap;
typedef struct PCMslot PCMslot;
typedef ulong Instr;
struct Conf
{
ulong nmach; /* processors */
ulong nproc; /* processes */
ulong npage0; /* total physical pages of memory */
ulong npage1; /* total physical pages of memory */
ulong topofmem; /* highest physical address + 1 */
ulong npage; /* total physical pages of memory */
ulong base0; /* base of bank 0 */
ulong base1; /* base of bank 1 */
ulong ialloc; /* max interrupt time allocation in bytes */
int useminicache; /* use mini cache: screen.c/lcd.c */
int textwrite; /* writeable text segment, for debug */
int portrait; /* display orientation */
};
#define NISAOPT 8
struct ISAConf {
char type[KNAMELEN];
ulong port;
ulong irq;
int itype;
ulong dma;
ulong mem;
ulong size;
ulong freq;
int nopt;
char *opt[NISAOPT];
};
/*
* FPenv.status
*/
enum
{
FPINIT,
FPACTIVE,
FPINACTIVE,
};
struct FPenv
{
ulong status;
ulong control;
ushort fpistate; /* emulated fp */
ulong regs[8][3]; /* emulated fp */
};
/*
* This structure must agree with fpsave and fprestore asm routines
*/
struct FPU
{
FPenv env;
};
struct Label
{
ulong sp;
ulong pc;
};
struct Lock
{
ulong key;
ulong sr;
ulong pc;
int pri;
};
#include "../port/portdat.h"
/*
* machine dependent definitions not used by ../port/portdat.h
*/
struct Mach
{
/* OFFSETS OF THE FOLLOWING KNOWN BY l.s */
ulong splpc; /* pc of last caller to splhi */
/* ordering from here on irrelevant */
int machno; /* physical id of processor */
ulong ticks; /* of the clock since boot time */
Proc *proc; /* current process on this processor */
Label sched; /* scheduler wakeup */
Lock alarmlock; /* access to alarm list */
void *alarm; /* alarms bound to this clock */
ulong cpuhz;
/* stacks for exceptions */
ulong fiqstack[4];
ulong irqstack[4];
ulong abtstack[4];
ulong undstack[4];
int stack[1];
};
#define MACHP(n) (n == 0 ? (Mach*)(MACHADDR) : (Mach*)0)
extern Mach *m;
extern Proc *up;
typedef struct MemBank {
uint pbase;
uint plimit;
uint vbase;
uint vlimit;
} MemBank;
/*
* Layout at virtual address 0.
*/
typedef struct Vectorpage {
void (*vectors[8])(void);
uint vtable[8];
} Vectorpage;
extern Vectorpage *page0;
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