257c7e958e
we now always use the new FXSAVE format in FPsave structure and fpregs file, converting back and forth in fpx87save() and fpx87restore(). document that fprestore() is a destructive operation now. change fp register definition in libmach and adapt fpr() acid funciton. avoid unneccesary copy of fpstate and fpsave in sysfork(). functions including syscalls do not preserve the fp registers and copying fpstate from the current process would mean we had to fpsave(&up->fpsave); first. simply not doing it, new process starts in FPinit state.
198 lines
5.1 KiB
C
198 lines
5.1 KiB
C
#include "../port/portfns.h"
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void aamloop(int);
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Dirtab* addarchfile(char*, int, long(*)(Chan*,void*,long,vlong), long(*)(Chan*,void*,long,vlong));
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void archinit(void);
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int bios32call(BIOS32ci*, u16int[3]);
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int bios32ci(BIOS32si*, BIOS32ci*);
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void bios32close(BIOS32si*);
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BIOS32si* bios32open(char*);
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void bootargs(void*);
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ulong cankaddr(ulong);
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int checksum(void *, int);
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void clockintr(Ureg*, void*);
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int (*cmpswap)(long*, long, long);
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int cmpswap486(long*, long, long);
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void (*coherence)(void);
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void cpuid(int, ulong regs[]);
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int cpuidentify(void);
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void cpuidprint(void);
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void (*cycles)(uvlong*);
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void delay(int);
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void* dmabva(int);
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int dmacount(int);
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int dmadone(int);
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void dmaend(int);
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int dmainit(int, int);
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#define DMAWRITE 0
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#define DMAREAD 1
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#define DMALOOP 2
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long dmasetup(int, void*, long, int);
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#define evenaddr(x) /* x86 doesn't care */
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void fpclear(void);
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void fpenv(FPsave*);
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void fpinit(void);
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void fpoff(void);
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void (*fprestore)(FPsave*);
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void (*fpsave)(FPsave*);
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void fpsserestore(FPsave*);
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void fpsserestore0(FPsave*);
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void fpssesave(FPsave*);
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void fpssesave0(FPsave*);
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ulong fpstatus(void);
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void fpx87restore(FPsave*);
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void fpx87restore0(FPsave*);
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void fpx87save(FPsave*);
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void fpx87save0(FPsave*);
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ulong getcr0(void);
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ulong getcr2(void);
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ulong getcr3(void);
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ulong getcr4(void);
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char* getconf(char*);
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void guesscpuhz(int);
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void halt(void);
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void mwait(void*);
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int i8042auxcmd(int);
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int i8042auxcmds(uchar*, int);
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void i8042auxenable(void (*)(int, int));
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void i8042reset(void);
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void i8250console(void);
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void* i8250alloc(int, int, int);
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void i8253enable(void);
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void i8253init(void);
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void i8253reset(void);
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uvlong i8253read(uvlong*);
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void i8253timerset(uvlong);
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int i8259disable(int);
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int i8259enable(Vctl*);
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void i8259init(void);
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int i8259isr(int);
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void i8259on(void);
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void i8259off(void);
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int i8259vecno(int);
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void idle(void);
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void idlehands(void);
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int inb(int);
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void insb(int, void*, int);
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ushort ins(int);
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void inss(int, void*, int);
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ulong inl(int);
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void insl(int, void*, int);
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int intrdisable(int, void (*)(Ureg *, void *), void*, int, char*);
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void intrenable(int, void (*)(Ureg*, void*), void*, int, char*);
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void introff(void);
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void intron(void);
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void invlpg(ulong);
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void iofree(int);
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void ioinit(void);
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int iounused(int, int);
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int ioalloc(int, int, int, char*);
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int ioreserve(int, int, int, char*);
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int iprint(char*, ...);
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int isaconfig(char*, int, ISAConf*);
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void* kaddr(ulong);
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void kbdenable(void);
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void kbdinit(void);
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#define kmapinval()
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void lgdt(ushort[3]);
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void lldt(ulong);
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void lidt(ushort[3]);
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void links(void);
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void ltr(ulong);
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void mach0init(void);
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void mathinit(void);
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void mb386(void);
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void mb586(void);
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void meminit(void);
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void memorysummary(void);
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void mfence(void);
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#define mmuflushtlb(pdb) putcr3(pdb)
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void mmuinit(void);
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ulong* mmuwalk(ulong*, ulong, int, int);
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int mtrr(uvlong, uvlong, char *);
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void mtrrclock(void);
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int mtrrprint(char *, long);
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uchar nvramread(int);
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void nvramwrite(int, uchar);
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void outb(int, int);
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void outsb(int, void*, int);
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void outs(int, ushort);
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void outss(int, void*, int);
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void outl(int, ulong);
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void outsl(int, void*, int);
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ulong paddr(void*);
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ulong pcibarsize(Pcidev*, int);
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void pcibussize(Pcidev*, ulong*, ulong*);
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int pcicfgr8(Pcidev*, int);
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int pcicfgr16(Pcidev*, int);
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int pcicfgr32(Pcidev*, int);
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void pcicfgw8(Pcidev*, int, int);
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void pcicfgw16(Pcidev*, int, int);
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void pcicfgw32(Pcidev*, int, int);
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void pciclrbme(Pcidev*);
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void pciclrioe(Pcidev*);
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void pciclrmwi(Pcidev*);
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int pcigetpms(Pcidev*);
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void pcihinv(Pcidev*);
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uchar pciipin(Pcidev*, uchar);
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Pcidev* pcimatch(Pcidev*, int, int);
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Pcidev* pcimatchtbdf(int);
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int pcicap(Pcidev*, int);
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void pcireset(void);
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int pciscan(int, Pcidev**);
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void pcisetbme(Pcidev*);
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void pcisetioe(Pcidev*);
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void pcisetmwi(Pcidev*);
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int pcisetpms(Pcidev*, int);
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void pcmcisread(PCMslot*);
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int pcmcistuple(int, int, int, void*, int);
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PCMmap* pcmmap(int, ulong, int, int);
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int pcmspecial(char*, ISAConf*);
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int (*_pcmspecial)(char *, ISAConf *);
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void pcmspecialclose(int);
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void (*_pcmspecialclose)(int);
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void pcmunmap(int, PCMmap*);
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int pdbmap(ulong*, ulong, ulong, int);
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void procrestore(Proc*);
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void procsave(Proc*);
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void procsetup(Proc*);
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void procfork(Proc*);
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void putcr0(ulong);
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void putcr3(ulong);
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void putcr4(ulong);
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void* rampage(void);
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int rdmsr(int, vlong*);
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void realmode(Ureg*);
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void screeninit(void);
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void (*screenputs)(char*, int);
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void* sigsearch(char*);
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void syncclock(void);
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void* tmpmap(Page*);
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void tmpunmap(void*);
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void touser(void*);
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void trapenable(int, void (*)(Ureg*, void*), void*, char*);
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void trapinit(void);
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void trapinit0(void);
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int tas(void*);
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uvlong tscticks(uvlong*);
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ulong umbmalloc(ulong, int, int);
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void umbfree(ulong, int);
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ulong umbrwmalloc(ulong, int, int);
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void umbrwfree(ulong, int);
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ulong upaalloc(int, int);
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void upafree(ulong, int);
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void upareserve(ulong, int);
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void vectortable(void);
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void* vmap(ulong, int);
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int vmapsync(ulong);
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void vunmap(void*, int);
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void wbinvd(void);
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int wrmsr(int, vlong);
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int xchgw(ushort*, int);
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void rdrandbuf(void*, ulong);
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#define userureg(ur) (((ur)->cs & 3) == 3)
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#define waserror() (up->nerrlab++, setlabel(&up->errlab[up->nerrlab-1]))
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#define KADDR(a) kaddr(a)
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#define PADDR(a) paddr((void*)(a))
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