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 #if !defined(LISP_FEATURE_SB_THREAD) && !defined(LISP_FEATURE_C_STACK_IS_CONTROL_STACK)
  51 extern lispobj *current_control_stack_pointer;
  52 #endif
  53 #if defined(LISP_FEATURE_X86) || defined(LISP_FEATURE_X86_64) || !defined(LISP_FEATURE_SB_THREAD)
  54 extern lispobj *current_control_frame_pointer;
  55 #endif
  56 #if !defined(LISP_FEATURE_X86) && !defined(LISP_FEATURE_X86_64) && !defined(LISP_FEATURE_SB_THREAD)
  57 extern lispobj *current_binding_stack_pointer;
  58 #endif
  59
  60 #if !defined(LISP_FEATURE_X86) && !defined(LISP_FEATURE_X86_64)
  61 /* This is unused on X86 and X86_64, but is used as the global
  62  *  allocation pointer by the cheney GC, and, in some instances, as
  63  *  the global allocation pointer on PPC/GENCGC. This should probably
  64  *  be cleaned up such that it only needs to exist on cheney. At the
  65  *  moment, it is also used by the GENCGC, to hold the pseudo_atomic
  66  *  bits, and is tightly coupled to reg_ALLOC by the assembly
  67  *  routines. */
  68 extern lispobj *dynamic_space_free_pointer;
  69 #endif
  70
  71 # ifndef LISP_FEATURE_GENCGC
  72 extern lispobj *current_auto_gc_trigger;
  73 # endif
  74
  75 extern lispobj *current_dynamic_space;
  76
  77 extern void globals_init(void);
  78
  79 #else /* LANGUAGE_ASSEMBLY */
  80
  81 # ifdef LISP_FEATURE_MIPS
  82 #  ifdef __linux__
  83 #   define EXTERN(name,bytes) .globl name
  84 #  else
  85 #   define EXTERN(name,bytes) .extern name bytes
  86 #  endif
  87 # endif
  88 /**/
  89 # ifdef LISP_FEATURE_SPARC
  90 #  ifdef SVR4
  91 #   define EXTERN(name,bytes) .global name
  92 #  else
  93 #   define EXTERN(name,bytes) .global _ ## name
  94 #  endif
  95 # endif
  96 /**/
  97 # ifdef LISP_FEATURE_ALPHA
  98 #  ifdef __linux__
  99 #   define EXTERN(name,bytes) .globl name
 100 #  endif
 101 # endif
 102 /**/
 103 # ifdef LISP_FEATURE_PPC
 104 #  ifdef LISP_FEATURE_DARWIN
 105 #   define EXTERN(name,bytes) .globl _ ## name
 106 #  else
 107 #   define EXTERN(name,bytes) .globl name
 108 #  endif
 109 # endif
 110 /**/
 111 # if defined(LISP_FEATURE_X86) || defined(LISP_FEATURE_X86_64)
 112 #  define EXTERN(name,bytes) .global name
 113 # endif
 114
 115 # if defined(LISP_FEATURE_ALPHA) || defined(LISP_FEATURE_X86_64)
 116 #  define POINTERSIZE 8
 117 # else
 118 #  define POINTERSIZE 4
 119 # endif
 120
 121 #ifndef LISP_FEATURE_SB_THREAD
 122 EXTERN(foreign_function_call_active, 4)
 123 #endif
 124
 125 #if !defined(LISP_FEATURE_SB_THREAD) && !defined(LISP_FEATURE_C_STACK_IS_CONTROL_STACK)
 126 EXTERN(current_control_stack_pointer, POINTERSIZE)
 127 #endif
 128 EXTERN(current_control_frame_pointer, POINTERSIZE)
 129 # if !defined(LISP_FEATURE_X86) && !defined(LISP_FEATURE_X86_64)
 130 EXTERN(current_binding_stack_pointer, POINTERSIZE)
 131 # endif
 132 # ifndef LISP_FEATURE_GENCGC
 133 EXTERN(dynamic_space_free_pointer, POINTERSIZE)
 134 # endif
 135
 136 #endif /* LANGUAGE_ASSEMBLY */
 137
 138 #endif /* _INCLUDED_GLOBALS_H_ */