X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fruntime.h;h=eaa233a7f881c35f73a89f033e12ba71edc35967;hb=b841aa690bada10da8c8db6eec361e3eeef0492c;hp=a2b1faef387f62447754aa165f2763269fb057d6;hpb=cea4896b2482b7b2b429c1631d774b4cfbc0efba;p=sbcl.git diff --git a/src/runtime/runtime.h b/src/runtime/runtime.h index a2b1fae..eaa233a 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 @@ -30,71 +31,150 @@ * signal handling.) * * Note: It may be that doing this is fundamentally unsound, since it - * causes output from signal handlers, the i/o libraries aren't + * causes output from signal handlers, and the i/o libraries aren't * necessarily reentrant. But it can still be very convenient for * figuring out what's going on when you have a signal handling * 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) ((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 -/* We need definitions of u32 and s32. */ -#error Alpha code is stale. -#else +/* 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; + +/* this is an integral type the same length as a machine pointer */ +typedef unsigned long pointer_sized_uint_t ; + +#include + +#if defined(LISP_FEATURE_SB_THREAD) +#include +typedef pthread_t os_thread_t; +#else +typedef pid_t os_thread_t; #endif -typedef u32 lispobj; +/* 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 + +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. Needs to be a macro due to the tedious C type + * system */ +#define make_lispobj(o,low_tag) ((lispobj)(LOW_WORD(o)|low_tag)) /* 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) +#define make_fixnum(n) ((lispobj)((n)<>N_FIXNUM_TAG_BITS) -/* Too bad ANSI C doesn't define "bool" as C++ does.. */ +#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; -/* FIXME: There seems to be no reason that SymbolValue, SetSymbolValue, - * and SymbolFunction can't be defined as (possibly inline) functions - * instead of macros. */ - -#define SymbolValue(sym) \ - (((struct symbol *)((sym)-type_OtherPointer))->value) -#define SetSymbolValue(sym,val) \ - (((struct symbol *)((sym)-type_OtherPointer))->value = (val)) - /* This only works for static symbols. */ /* FIXME: should be called StaticSymbolFunction, right? */ #define SymbolFunction(sym) \ - (((struct fdefn *)(SymbolValue(sym)-type_OtherPointer))->function) + (((struct fdefn *)(native_pointer(SymbolValue(sym,0))))->fun) + +/* 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 2.5 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_ */