1 /* FIXME: Aren't preprocessor symbols with underscore prefixes
2 * reserved for the system libraries? If so, it would be tidy to
3 * rename flags like _X86_ARCH_H so their names are in a part of the
4 * namespace that we control. */
8 #ifndef SBCL_GENESIS_CONFIG
9 #error genesis/config.h (or sbcl.h) must be included before this file
12 #include "interr.h" /* for declaration of lose() */
14 #define ARCH_HAS_STACK_POINTER
16 /* FIXME: Do we also want
17 * #define ARCH_HAS_FLOAT_REGISTERS
18 * here? (The answer wasn't obvious to me when merging the
19 * architecture-abstracting patches for CSR's SPARC port. -- WHN 2002-02-15) */
21 #define COMPILER_BARRIER \
22 do { __asm__ __volatile__ ( "" : : : "memory"); } while (0)
24 #ifdef LISP_FEATURE_WIN32
25 extern int os_number_of_processors;
26 #define yield_on_uniprocessor() \
27 do { if (os_number_of_processors<=1) SwitchToThread(); } while(0)
29 /* Stubs are better than ifdef EVERYWHERE. */
30 #define yield_on_uniprocessor() \
36 get_spinlock(volatile lispobj *word, unsigned long value)
38 #ifdef LISP_FEATURE_SB_THREAD
41 lose("recursive get_spinlock: 0x%x,%ld\n",word,value);
43 #if defined(LISP_FEATURE_DARWIN)
44 asm volatile ("xor %0,%0;\n\
47 : "r" (value), "m" (*word)
51 asm volatile("rep; nop");
53 asm volatile ("xor %0,%0\n\
56 : "r" (value), "m" (*word)
59 yield_on_uniprocessor();
67 release_spinlock(volatile lispobj *word)
69 /* See comment in RELEASE-SPINLOCK in target-thread.lisp. */
76 swap_lispobjs(volatile lispobj *dest, lispobj value)
79 #if defined(LISP_FEATURE_DARWIN)
80 asm volatile ("lock/xchg %0,(%1)"
82 : "r" (dest), "0" (value)
85 asm volatile ("lock xchg %0,(%1)"
87 : "r" (dest), "0" (value)
93 extern void fast_bzero_detect(void *, size_t);
94 extern void (*fast_bzero_pointer)(void *, size_t);
96 #endif /* _X86_ARCH_H */