src/runtime/globals.h

   1 /*
   2  * This software is part of the SBCL system. See the README file for
   3  * more information.
   4  *
   5  * This software is derived from the CMU CL system, which was
   6  * written at Carnegie Mellon University and released into the
   7  * public domain. The software is in the public domain and is
   8  * provided with absolutely no warranty. See the COPYING and CREDITS
   9  * files for more information.
  10  */
  11
  12 #ifndef _INCLUDED_GLOBALS_H_
  13 #define _INCLUDED_GLOBALS_H_
  14
  15 #ifndef LANGUAGE_ASSEMBLY
  16 # include <sys/types.h>
  17 # include <unistd.h>
  18 # include "runtime.h"
  19 #endif
  20
  21 #include "sbcl.h"
  22
  23 #ifndef LANGUAGE_ASSEMBLY
  24
  25 #ifdef LISP_FEATURE_SB_THREAD
  26 #define foreign_function_call_active_p(thread) \
  27     (thread->foreign_function_call_active)
  28 #else
  29 extern int foreign_function_call_active;
  30 #define foreign_function_call_active_p(thread) \
  31     foreign_function_call_active
  32 #endif
  33
  34 extern size_t dynamic_space_size;
  35 extern size_t thread_control_stack_size;
  36
  37 extern struct runtime_options *runtime_options;
  38
  39 #ifdef LISP_FEATURE_WIN32
  40 #define ENVIRON _environ
  41 #else
  42 #define ENVIRON environ
  43 #endif
  44 extern char **ENVIRON;
  45
  46 #if defined(LISP_FEATURE_SB_THREAD) && !defined(LISP_FEATURE_GCC_TLS)
  47 extern pthread_key_t specials;
  48 #endif
  49
  50 extern lispobj *current_control_stack_pointer;
  51 extern lispobj *current_control_frame_pointer;
  52 #if !defined(LISP_FEATURE_X86) && !defined(LISP_FEATURE_X86_64) && !defined(LISP_FEATURE_SB_THREAD)
  53 extern lispobj *current_binding_stack_pointer;
  54 #endif
  55
  56 #if !defined(LISP_FEATURE_X86) && !defined(LISP_FEATURE_X86_64)
  57 /* This is unused on X86 and X86_64, but is used as the global
  58  *  allocation pointer by the cheney GC, and, in some instances, as
  59  *  the global allocation pointer on PPC/GENCGC. This should probably
  60  *  be cleaned up such that it only needs to exist on cheney. At the
  61  *  moment, it is also used by the GENCGC, to hold the pseudo_atomic
  62  *  bits, and is tightly coupled to reg_ALLOC by the assembly
  63  *  routines. */
  64 extern lispobj *dynamic_space_free_pointer;
  65 #endif
  66
  67 # ifndef LISP_FEATURE_GENCGC
  68 extern lispobj *current_auto_gc_trigger;
  69 # endif
  70
  71 extern lispobj *current_dynamic_space;
  72
  73 extern void globals_init(void);
  74
  75 #else /* LANGUAGE_ASSEMBLY */
  76
  77 # ifdef LISP_FEATURE_MIPS
  78 #  ifdef __linux__
  79 #   define EXTERN(name,bytes) .globl name
  80 #  else
  81 #   define EXTERN(name,bytes) .extern name bytes
  82 #  endif
  83 # endif
  84 /**/
  85 # ifdef LISP_FEATURE_SPARC
  86 #  ifdef SVR4
  87 #   define EXTERN(name,bytes) .global name
  88 #  else
  89 #   define EXTERN(name,bytes) .global _ ## name
  90 #  endif
  91 # endif
  92 /**/
  93 # ifdef LISP_FEATURE_ALPHA
  94 #  ifdef __linux__
  95 #   define EXTERN(name,bytes) .globl name
  96 #  endif
  97 # endif
  98 /**/
  99 # ifdef LISP_FEATURE_PPC
 100 #  ifdef LISP_FEATURE_DARWIN
 101 #   define EXTERN(name,bytes) .globl _ ## name
 102 #  else
 103 #   define EXTERN(name,bytes) .globl name
 104 #  endif
 105 # endif
 106 /**/
 107 # if defined(LISP_FEATURE_X86) || defined(LISP_FEATURE_X86_64)
 108 #  define EXTERN(name,bytes) .global name
 109 # endif
 110
 111 # if defined(LISP_FEATURE_ALPHA) || defined(LISP_FEATURE_X86_64)
 112 #  define POINTERSIZE 8
 113 # else
 114 #  define POINTERSIZE 4
 115 # endif
 116
 117 #ifndef LISP_FEATURE_SB_THREAD
 118 EXTERN(foreign_function_call_active, 4)
 119 #endif
 120
 121 EXTERN(current_control_stack_pointer, POINTERSIZE)
 122 EXTERN(current_control_frame_pointer, POINTERSIZE)
 123 # if !defined(LISP_FEATURE_X86) && !defined(LISP_FEATURE_X86_64)
 124 EXTERN(current_binding_stack_pointer, POINTERSIZE)
 125 # endif
 126 # ifndef LISP_FEATURE_GENCGC
 127 EXTERN(dynamic_space_free_pointer, POINTERSIZE)
 128 # endif
 129
 130 #endif /* LANGUAGE_ASSEMBLY */
 131
 132 #endif /* _INCLUDED_GLOBALS_H_ */