q.out.h

这是一个同样来自贝尔实验室的和UNIX有着渊源的操作系统, 其简洁的设计和实现易于我们学习和理解

#define	NSNAME	8
#define	NSYM	50
#define	NREG	32

#define NOPROF	(1<<0)
#define DUPOK	(1<<1)

enum
{
	REGZERO		= 0,	/* set to zero */
	REGSP		= 1,
	REGSB		= 2,
	REGRET		= 3,
	REGARG		= 3,
	REGMIN		= 7,	/* register variables allocated from here to REGMAX */
	REGMAX		= 27,
	REGEXT		= 30,	/* external registers allocated from here down */
	REGTMP		= 31,	/* used by the linker */

	FREGRET		= 0,
	FREGMIN		= 17,	/* first register variable */
	FREGEXT		= 26,	/* first external register */
	FREGCVI		= 27, /* floating conversion constant */
	FREGZERO	= 28,	/* both float and double */
	FREGHALF	= 29,	/* double */
	FREGONE		= 30,	/* double */
	FREGTWO		= 31	/* double */
/*
 * GENERAL:
 *
 * compiler allocates R3 up as temps
 * compiler allocates register variables R7-R27
 * compiler allocates external registers R30 down
 *
 * compiler allocates register variables F17-F26
 * compiler allocates external registers F26 down
 */
};

enum	as
{
	AXXX	= 0,
	AADD,
	AADDCC,
	AADDV,
	AADDVCC,
	AADDC,
	AADDCCC,
	AADDCV,
	AADDCVCC,
	AADDME,
	AADDMECC,
	AADDMEVCC,
	AADDMEV,
	AADDE,
	AADDECC,
	AADDEVCC,
	AADDEV,
	AADDZE,
	AADDZECC,
	AADDZEVCC,
	AADDZEV,
	AAND,
	AANDCC,
	AANDN,
	AANDNCC,
	ABC,
	ABCL,
	ABEQ,
	ABGE,
	ABGT,
	ABL,
	ABLE,
	ABLT,
	ABNE,
	ABR,
	ABVC,
	ABVS,
	ACMP,
	ACMPU,
	ACNTLZW,
	ACNTLZWCC,
	ACRAND,
	ACRANDN,
	ACREQV,
	ACRNAND,
	ACRNOR,
	ACROR,
	ACRORN,
	ACRXOR,
	ADIVW,
	ADIVWCC,
	ADIVWVCC,
	ADIVWV,
	ADIVWU,
	ADIVWUCC,
	ADIVWUVCC,
	ADIVWUV,
	AEQV,
	AEQVCC,
	AEXTSB,
	AEXTSBCC,
	AEXTSH,
	AEXTSHCC,
	AFABS,
	AFABSCC,
	AFADD,
	AFADDCC,
	AFADDS,
	AFADDSCC,
	AFCMPO,
	AFCMPU,
	AFCTIW,
	AFCTIWCC,
	AFCTIWZ,
	AFCTIWZCC,
	AFDIV,
	AFDIVCC,
	AFDIVS,
	AFDIVSCC,
	AFMADD,
	AFMADDCC,
	AFMADDS,
	AFMADDSCC,
	AFMOVD,
	AFMOVDCC,
	AFMOVDU,
	AFMOVS,
	AFMOVSU,
	AFMSUB,
	AFMSUBCC,
	AFMSUBS,
	AFMSUBSCC,
	AFMUL,
	AFMULCC,
	AFMULS,
	AFMULSCC,
	AFNABS,
	AFNABSCC,
	AFNEG,
	AFNEGCC,
	AFNMADD,
	AFNMADDCC,
	AFNMADDS,
	AFNMADDSCC,
	AFNMSUB,
	AFNMSUBCC,
	AFNMSUBS,
	AFNMSUBSCC,
	AFRSP,
	AFRSPCC,
	AFSUB,
	AFSUBCC,
	AFSUBS,
	AFSUBSCC,
	AMOVMW,
	ALSW,
	ALWAR,
	AMOVWBR,
	AMOVB,
	AMOVBU,
	AMOVBZ,
	AMOVBZU,
	AMOVH,
	AMOVHBR,
	AMOVHU,
	AMOVHZ,
	AMOVHZU,
	AMOVW,
	AMOVWU,
	AMOVFL,
	AMOVCRFXXX,
	AMOVCRFS,
	AMOVCRXRXXX,
	AMOVFCRXXX,
	AMFFSXXX,
	AMFFSCCXXX,
	AMTCRFXXX,
	AMTFSB0,
	AMTFSB0CC,
	AMTFSB1,
	AMTFSB1CC,
	AMTFSFXXX,
	AMTFSFCCXXX,
	AMTFSFIXXX,
	AMTFSFIXXXCC,
	AMULHW,
	AMULHWCC,
	AMULHWU,
	AMULHWUCC,
	AMULLW,
	AMULLWCC,
	AMULLWVCC,
	AMULLWV,
	ANAND,
	ANANDCC,
	ANEG,
	ANEGCC,
	ANEGVCC,
	ANEGV,
	ANOR,
	ANORCC,
	AOR,
	AORCC,
	AORN,
	AORNCC,
	AREM,
	AREMCC,
	AREMV,
	AREMVCC,
	AREMU,
	AREMUCC,
	AREMUV,
	AREMUVCC,
	ARFI,
	ARLWMI,
	ARLWMICC,
	ARLWNM,
	ARLWNMCC,
	ASLW,
	ASLWCC,
	ASRW,
	ASRAW,
	ASRAWCC,
	ASRWCC,
	AILLXXX1,
	ASTSW,
	ASTWBRXXX,
	ASTWCCC,
	ASUB,
	ASUBCC,
	ASUBVCC,
	ASUBC,
	ASUBCCC,
	ASUBCV,
	ASUBCVCC,
	ASUBME,
	ASUBMECC,
	ASUBMEVCC,
	ASUBMEV,
	ASUBV,
	ASUBE,
	ASUBECC,
	ASUBEV,
	ASUBEVCC,
	ASUBZE,
	ASUBZECC,
	ASUBZEVCC,
	ASUBZEV,
	ASYNC,
	AXOR,
	AXORCC,

	ADCBF,
	ADCBI,
	ADCBST,
	ADCBT,
	ADCBTST,
	ADCBZ,
	AECIWX,
	AECOWX,
	AEIEIO,
	AICBI,
	AISYNC,
	ATLBIE,
	ATW,

	ASYSCALL,
	ADATA,
	AGLOBL,
	AGOK,
	AHISTORY,
	ANAME,
	ANOP,
	ARETURN,
	ATEXT,
	AWORD,
	AEND,
	ADYNT,
	AINIT,
	ASIGNAME,

	/* IBM powerpc embedded; not portable */
	AMACCHW,
	AMACCHWCC,
	AMACCHWS,
	AMACCHWSCC,
	AMACCHWSU,
	AMACCHWSUCC,
	AMACCHWSUV,
	AMACCHWSUVCC,
	AMACCHWSV,
	AMACCHWSVCC,
	AMACCHWU,
	AMACCHWUCC,
	AMACCHWUV,
	AMACCHWUVCC,
	AMACCHWV,
	AMACCHWVCC,
	AMACHHW,
	AMACHHWCC,
	AMACHHWV,
	AMACHHWVCC,
	AMACHHWS,
	AMACHHWSCC,
	AMACHHWSV,
	AMACHHWSVCC,
	AMACHHWSU,
	AMACHHWSUCC,
	AMACHHWSUV,
	AMACHHWSUVCC,
	AMACHHWU,
	AMACHHWUCC,
	AMACHHWUV,
	AMACHHWUVCC,
	AMACLHW,
	AMACLHWCC,
	AMACLHWS,
	AMACLHWSCC,
	AMACLHWSU,
	AMACLHWSUCC,
	AMACLHWSUV,
	AMACLHWSUVCC,
	AMACLHWSV,
	AMACLHWSVCC,
	AMACLHWU,
	AMACLHWUCC,
	AMACLHWUV,
	AMACLHWUVCC,
	AMACLHWV,
	AMACLHWVCC,
	AMULCHW,
	AMULCHWCC,
	AMULCHWU,
	AMULCHWUCC,
	AMULHHW,
	AMULHHWCC,
	AMULHHWU,
	AMULHHWUCC,
	AMULLHW,
	AMULLHWCC,
	AMULLHWU,
	AMULLHWUCC,
	ANMACCHW,
	ANMACCHWCC,
	ANMACCHWS,
	ANMACCHWSCC,
	ANMACCHWSV,
	ANMACCHWSVCC,
	ANMACCHWV,
	ANMACCHWVCC,
	ANMACHHW,
	ANMACHHWCC,
	ANMACHHWS,
	ANMACHHWSCC,
	ANMACHHWSV,
	ANMACHHWSVCC,
	ANMACHHWV,
	ANMACHHWVCC,
	ANMACLHW,
	ANMACLHWCC,
	ANMACLHWS,
	ANMACLHWSCC,
	ANMACLHWSV,
	ANMACLHWSVCC,
	ANMACLHWV,
	ANMACLHWVCC,

	ARFCI,

	ALAST
};

/* type/name */
enum
{
	D_GOK	= 0,
	D_NONE,

/* name */
	D_EXTERN,
	D_STATIC,
	D_AUTO,
	D_PARAM,

/* type */
	D_BRANCH,
	D_OREG,
	D_CONST,
	D_FCONST,
	D_SCONST,
	D_REG,
	D_FPSCR,
	D_MSR,
	D_FREG,
	D_CREG,
	D_SPR,
	D_SREG,	/* segment register */
	D_OPT,	/* branch/trap option */
	D_FILE,
	D_FILE1,
	D_DCR,	/* device control register */

/* reg names iff type is D_SPR */
	D_XER	= 1,
	D_LR	= 8,
	D_CTR	= 9
	/* and many supervisor level registers */
};

/*
 * this is the ranlib header
 */
#define	SYMDEF	"__.SYMDEF"

/*
 * this is the simulated IEEE floating point
 */
typedef	struct	ieee	Ieee;
struct	ieee
{
	long	l;	/* contains ls-man	0xffffffff */
	long	h;	/* contains sign	0x80000000
				    exp		0x7ff00000
				    ms-man	0x000fffff */
};