typedef struct BIOS32si BIOS32si; typedef struct BIOS32ci BIOS32ci; typedef struct Conf Conf; typedef struct Confmem Confmem; typedef union FPsave FPsave; typedef struct FPx87state FPx87state; typedef struct FPssestate FPssestate; typedef struct PFPU PFPU; typedef struct ISAConf ISAConf; typedef struct Label Label; typedef struct Lock Lock; typedef struct MMU MMU; typedef struct Mach Mach; typedef struct PCArch PCArch; typedef struct Pcidev Pcidev; typedef struct PCMmap PCMmap; typedef struct PCMslot PCMslot; typedef struct Page Page; typedef struct PMMU PMMU; typedef struct Proc Proc; typedef struct Segdesc Segdesc; typedef vlong Tval; typedef struct Ureg Ureg; typedef struct Vctl Vctl; #pragma incomplete BIOS32si #pragma incomplete Pcidev #pragma incomplete Ureg #define MAXSYSARG 5 /* for mount(fd, afd, mpt, flag, arg) */ /* * parameters for sysproc.c */ #define AOUT_MAGIC (I_MAGIC) struct Lock { ulong key; ulong sr; uintptr pc; Proc *p; Mach *m; ushort isilock; long lockcycles; }; struct Label { ulong sp; ulong pc; }; struct FPx87state /* x87 fp state */ { ushort control; ushort r1; ushort status; ushort r2; ushort tag; ushort r3; ulong pc; ushort selector; ushort opcode; ulong operand; ushort oselector; ushort r4; uchar regs[80]; /* floating point registers */ }; struct FPssestate /* SSE fp state */ { ushort fcw; /* control */ ushort fsw; /* status */ ushort ftw; /* tag */ ushort fop; /* opcode */ ulong fpuip; /* pc */ ushort cs; /* pc segment */ ushort rsrvd1; /* reserved */ ulong fpudp; /* data pointer */ ushort ds; /* data pointer segment */ ushort rsrvd2; ulong mxcsr; /* MXCSR register state */ ulong mxcsr_mask; /* MXCSR mask register */ uchar xregs[480]; /* extended registers */ }; union FPsave { FPx87state; FPssestate; }; struct PFPU { int fpstate; FPsave *fpsave; }; enum { /* this is a state */ FPinit= 0, FPactive= 1, FPinactive= 2, /* the following is a bit that can be or'd into the state */ FPillegal= 0x100, }; struct Confmem { ulong base; ulong npage; ulong kbase; ulong klimit; }; struct Conf { ulong nmach; /* processors */ ulong nproc; /* processes */ ulong monitor; /* has monitor? */ 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; /* max interrupt time allocation in bytes */ ulong pipeqsize; /* size in bytes of pipe queues */ int nuart; /* number of uart devices */ Confmem mem[64]; /* physical memory */ }; struct Segdesc { ulong d0; ulong d1; }; /* * MMU stuff in proc */ #define NCOLOR 1 struct PMMU { Page* mmupdb; /* page directory base */ Page* mmufree; /* unused page table pages */ Page* mmuused; /* used page table pages */ Page* kmaptable; /* page table used by kmap */ uint lastkmap; /* last entry used by kmap */ int nkmap; /* number of current kmaps */ Segdesc gdt[NPROCSEG]; /* per process descriptors */ Segdesc *ldt; /* local descriptor table */ int nldt; /* number of ldt descriptors allocated */ u32int dr[8]; /* debug registers */ void *vmx; }; #include "../port/portdat.h" typedef struct { ulong link; /* link (old TSS selector) */ ulong esp0; /* privilege level 0 stack pointer */ ulong ss0; /* privilege level 0 stack selector */ ulong esp1; /* privilege level 1 stack pointer */ ulong ss1; /* privilege level 1 stack selector */ ulong esp2; /* privilege level 2 stack pointer */ ulong ss2; /* privilege level 2 stack selector */ ulong xcr3; /* page directory base register - not used because we don't use trap gates */ ulong eip; /* instruction pointer */ ulong eflags; /* flags register */ ulong eax; /* general registers */ ulong ecx; ulong edx; ulong ebx; ulong esp; ulong ebp; ulong esi; ulong edi; ulong es; /* segment selectors */ ulong cs; ulong ss; ulong ds; ulong fs; ulong gs; ulong ldt; /* selector for task's LDT */ ulong iomap; /* I/O map base address + T-bit */ } Tss; struct Mach { int machno; /* physical id of processor */ uintptr splpc; /* pc of last caller to splhi */ Proc* proc; /* current process on this processor */ Proc* externup; /* extern register Proc *up */ PMach; uvlong tscticks; ulong spuriousintr; int lastintr; int loopconst; int aalcycles; int cpumhz; uvlong cpuhz; int cpuidax; int cpuidcx; int cpuiddx; char cpuidid[16]; char* cpuidtype; uchar cpuidfamily; uchar cpuidmodel; uchar cpuidstepping; char havetsc; char havepge; char havewatchpt8; char havenx; ulong* pdb; /* page directory base for this processor (va) */ Tss* tss; /* tss for this processor */ Segdesc*gdt; /* gdt for this processor */ u32int dr7; /* shadow copy of dr7 */ u32int xcr0; void* vmx; Page* pdbpool; int pdbcnt; int pdballoc; int pdbfree; uintptr stack[1]; }; /* * KMap the structure doesn't exist, but the functions do. */ typedef struct KMap KMap; #define VA(k) ((void*)(k)) KMap* kmap(Page*); void kunmap(KMap*); extern u32int MemMin; struct { char machs[MAXMACH]; /* active CPUs */ int exiting; /* shutdown */ }active; /* * routines for things outside the PC model, like power management */ struct PCArch { char* id; int (*ident)(void); /* this should be in the model */ void (*reset)(void); /* this should be in the model */ void (*intrinit)(void); int (*intrassign)(Vctl*); int (*intrirqno)(int, int); int (*intrspurious)(int); int (*intrvecno)(int); void (*introff)(void); void (*intron)(void); void (*clockinit)(void); void (*clockenable)(void); uvlong (*fastclock)(uvlong*); void (*timerset)(uvlong); }; /* cpuid instruction result register bits */ enum { /* cx */ Monitor = 1<<3, /* dx */ Fpuonchip = 1<<0, Vmex = 1<<1, /* virtual-mode extensions */ Pse = 1<<3, /* page size extensions */ Tsc = 1<<4, /* time-stamp counter */ Cpumsr = 1<<5, /* model-specific registers, rdmsr/wrmsr */ Pae = 1<<6, /* physical-addr extensions */ Mce = 1<<7, /* machine-check exception */ Cmpxchg8b = 1<<8, Cpuapic = 1<<9, Mtrr = 1<<12, /* memory-type range regs. */ Pge = 1<<13, /* page global extension */ Mca = 1<<14, /* machine-check architecture */ Pat = 1<<16, /* page attribute table */ Pse2 = 1<<17, /* more page size extensions */ Clflush = 1<<19, Acpif = 1<<22, /* therm control msr */ Mmx = 1<<23, Fxsr = 1<<24, /* have SSE FXSAVE/FXRSTOR */ Sse = 1<<25, /* thus sfence instr. */ Sse2 = 1<<26, /* thus mfence & lfence instr.s */ Rdrnd = 1<<30, /* RDRAND support bit */ }; /* model-specific registers, for compatibility with pc64 code */ enum { Efer = 0xc0000080, /* Extended Feature Enable */ Star = 0xc0000081, /* Legacy Target IP and [CS]S */ Lstar = 0xc0000082, /* Long Mode Target IP */ Cstar = 0xc0000083, /* Compatibility Target IP */ Sfmask = 0xc0000084, /* SYSCALL Flags Mask */ FSbase = 0xc0000100, /* 64-bit FS Base Address */ GSbase = 0xc0000101, /* 64-bit GS Base Address */ KernelGSbase = 0xc0000102, /* SWAPGS instruction */ }; /* * a parsed plan9.ini line */ #define NISAOPT 8 struct ISAConf { char *type; uvlong port; int irq; ulong dma; ulong mem; ulong size; ulong freq; int nopt; char *opt[NISAOPT]; }; extern PCArch *arch; /* PC architecture */ /* * Each processor sees its own Mach structure at address MACHADDR. * However, the Mach structures must also be available via the per-processor * MMU information array machp, mainly for disambiguation and access to * the clock which is only maintained by the bootstrap processor (0). */ Mach* machp[MAXMACH]; #define MACHP(n) (machp[n]) extern Mach *m; #define up (((Mach*)MACHADDR)->externup) /* * hardware info about a device */ typedef struct { ulong port; int size; } Devport; struct DevConf { ulong intnum; /* interrupt number */ char *type; /* card type, malloced */ int nports; /* Number of ports */ Devport *ports; /* The ports themselves */ }; typedef struct BIOS32ci { /* BIOS32 Calling Interface */ u32int eax; u32int ebx; u32int ecx; u32int edx; u32int esi; u32int edi; } BIOS32ci;