X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fruntime.h;h=8304b77bb9dd0c7b4d35442032daa89a5ba612b1;hb=e2b2b8f2156ede16d70a0bdd0cfad29ea31b8ccc;hp=7ef2691cdb61e18cf1aade7846609d37b449df35;hpb=30d3955b07af6b6b2e52699f213e3b87b11e0f2d;p=sbcl.git diff --git a/src/runtime/runtime.h b/src/runtime/runtime.h index 7ef2691..8304b77 100644 --- a/src/runtime/runtime.h +++ b/src/runtime/runtime.h @@ -15,8 +15,9 @@ #ifndef _SBCL_RUNTIME_H_ #define _SBCL_RUNTIME_H_ -#define QSHOW 0 /* Enable low-level debugging output? */ -#if QSHOW +/*#define QSHOW */ /* Enable low-level debugging output? */ + +#ifdef QSHOW #define FSHOW(args) fprintf args #define SHOW(string) FSHOW((stderr, "/%s\n", string)) #else @@ -36,75 +37,149 @@ * problem.. */ #define QSHOW_SIGNALS 0 -/* FIXME: There seems to be no reason that LowtagOf can't be defined - * as a (possibly inline) function instead of a macro. It would also - * be reasonable to rename the constants in ALL CAPS. */ - -#define lowtag_Bits 3 -#define lowtag_Mask ((1<>type_Bits)) - -#define Pointerp(obj) ((obj) & 0x01) -#define PTR(obj) ((unsigned long)((obj)&~lowtag_Mask)) - -#define CONS(obj) ((struct cons *)((obj)-type_ListPointer)) -#define SYMBOL(obj) ((struct symbol *)((obj)-type_OtherPointer)) -#define FDEFN(obj) ((struct fdefn *)((obj)-type_OtherPointer)) +#if QSHOW_SIGNALS +#define FSHOW_SIGNAL FSHOW +#else +#define FSHOW_SIGNAL(args) +#endif /* KLUDGE: These are in theory machine-dependent and OS-dependent, but * in practice the "foo int" definitions work for all the machines * that SBCL runs on as of 0.6.7. If we port to the Alpha or some * other non-32-bit machine we'll probably need real machine-dependent * and OS-dependent definitions again. */ -#if ((defined alpha) && !(defined linux)) -#error No u32,s32 definitions for this platform. Write some. -#else -/* int happens to be 4 bytes on linux/alpha. long is longer. */ +/* even on alpha, int happens to be 4 bytes. long is longer. */ +/* FIXME: these names really shouldn't reflect their length and this + is not quite right for some of the FFI stuff */ +typedef unsigned long u64; +typedef signed long s64; typedef unsigned int u32; typedef signed int s32; -#define LOW_WORD(c) ((long)(c) & 0xFFFFFFFFL) -#endif -typedef u32 lispobj; +/* this is an integral type the same length as a machine pointer */ +typedef unsigned long pointer_sized_uint_t ; -/* FIXME: There seems to be no reason that make_fixnum and fixnum_value - * can't be implemented as (possibly inline) functions. */ -#define make_fixnum(n) ((lispobj)((n)<<2)) -#define fixnum_value(n) (((long)n)>>2) +#include -/* Too bad ANSI C doesn't define "bool" as C++ does.. */ -typedef int boolean; - -/* FIXME: There seems to be no reason that SymbolValue, SetSymbolValue, - * and SymbolFunction can't be defined as (possibly inline) functions - * instead of macros. */ +#if defined(LISP_FEATURE_SB_THREAD) +#include +typedef pthread_t os_thread_t; +#else +typedef pid_t os_thread_t; +#endif -#define SymbolValue(sym) \ - (((struct symbol *)((sym)-type_OtherPointer))->value) -#define SetSymbolValue(sym,val) \ - (((struct symbol *)((sym)-type_OtherPointer))->value = (val)) +/* FIXME: we do things this way because of the alpha32 port. once + alpha64 has arrived, all this nastiness can go away */ +#if 64 == N_WORD_BITS +#define LOW_WORD(c) ((pointer_sized_uint_t)c) +typedef unsigned long lispobj; +#else +#define LOW_WORD(c) ((long)(c) & 0xFFFFFFFFL) +/* fake it on alpha32 */ +typedef unsigned int lispobj; +#endif -/* This only works for static symbols. */ -/* FIXME: should be called StaticSymbolFunction, right? */ -#define SymbolFunction(sym) \ - (((struct fdefn *)(SymbolValue(sym)-type_OtherPointer))->function) +static inline int +lowtag_of(lispobj obj) +{ + return obj & LOWTAG_MASK; +} + +static inline int +widetag_of(lispobj obj) +{ + return obj & WIDETAG_MASK; +} + +static inline unsigned long +HeaderValue(lispobj obj) +{ + return obj >> N_WIDETAG_BITS; +} + +static inline struct cons * +CONS(lispobj obj) +{ + return (struct cons *)(obj - LIST_POINTER_LOWTAG); +} + +static inline struct symbol * +SYMBOL(lispobj obj) +{ + return (struct symbol *)(obj - OTHER_POINTER_LOWTAG); +} + +static inline struct fdefn * +FDEFN(lispobj obj) +{ + return (struct fdefn *)(obj - OTHER_POINTER_LOWTAG); +} + +/* Is the Lisp object obj something with pointer nature (as opposed to + * e.g. a fixnum or character or unbound marker)? */ +static inline int +is_lisp_pointer(lispobj obj) +{ + return obj & 1; +} + +/* Convert from a lispobj with type bits to a native (ordinary + * C/assembly) pointer to the beginning of the object. */ +static inline lispobj * +native_pointer(lispobj obj) +{ + return (lispobj *) ((pointer_sized_uint_t) (obj & ~LOWTAG_MASK)); +} + +/* inverse operation: create a suitably tagged lispobj from a native + * pointer or integer.*/ +static inline lispobj +make_lispobj(void *o, int low_tag) +{ + return LOW_WORD(o) | low_tag; +} + +static inline lispobj +make_fixnum(long n) +{ + return n << N_FIXNUM_TAG_BITS; +} + +static inline long +fixnum_value(lispobj n) +{ + return n >> N_FIXNUM_TAG_BITS; +} + +#if defined(LISP_FEATURE_WIN32) +/* KLUDGE: Avoid double definition of boolean by rpcndr.h included via + * shlobj.h. + * + * FIXME: We should probably arrange to use the rpcndr.h boolean on Windows, + * or get rid of our own boolean type. If the boolean type is only used in + * the runtime, and never passed to Lisp, then it doesn't matter which one + * we use. + */ +#define boolean rpcndr_boolean +#include +#undef boolean +#endif +typedef int boolean; /* KLUDGE: As far as I can tell there's no ANSI C way of saying * "this function never returns". This is the way that you do it - * in GCC later than version 2.7 or so. If you are using some - * compiler that doesn't understand this, you could could just - * change it to "typedef void never_returns" and nothing would - * break, you might just get a few more bytes of compiled code or - * a few more compiler warnings. -- WHN 2000-10-21 */ -typedef volatile void never_returns; + * in GCC later than version 2.5 or so. */ +#if defined(__GNUC__) +#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 5) +#define never_returns __attribute__ ((noreturn)) +#else +#define never_returns +#endif +#else +#define never_returns +#endif + +extern void *successful_malloc (size_t size); +extern char *copied_string (char *string); #endif /* _SBCL_RUNTIME_H_ */