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 # include "runtime-options.h"
  20 #endif
  21
  22 #include "sbcl.h"
  23
  24 #ifndef LANGUAGE_ASSEMBLY
  25
  26 #ifdef LISP_FEATURE_SB_THREAD
  27 #define foreign_function_call_active_p(thread) \
  28     (thread->foreign_function_call_active)
  29 #else
  30 extern int foreign_function_call_active;
  31 #define foreign_function_call_active_p(thread) \
  32     foreign_function_call_active
  33 #endif
  34
  35 extern os_vm_size_t dynamic_space_size;
  36 extern os_vm_size_t thread_control_stack_size;
  37
  38 extern struct runtime_options *runtime_options;
  39
  40 #ifdef LISP_FEATURE_WIN32
  41 #define ENVIRON _environ
  42 #else
  43 #define ENVIRON environ
  44 #endif
  45 extern char **ENVIRON;
  46
  47 #if defined(LISP_FEATURE_SB_THREAD) && !defined(LISP_FEATURE_GCC_TLS)
  48 extern pthread_key_t specials;
  49 #endif
  50
  51 #if !defined(LISP_FEATURE_SB_THREAD)
  52 extern lispobj *current_control_stack_pointer;
  53 #endif
  54 #if defined(LISP_FEATURE_X86) || defined(LISP_FEATURE_X86_64) || !defined(LISP_FEATURE_SB_THREAD)
  55 extern lispobj *current_control_frame_pointer;
  56 #endif
  57 #if !defined(LISP_FEATURE_X86) && !defined(LISP_FEATURE_X86_64) && !defined(LISP_FEATURE_SB_THREAD)
  58 extern lispobj *current_binding_stack_pointer;
  59 #endif
  60
  61 #if !defined(LISP_FEATURE_X86) && !defined(LISP_FEATURE_X86_64)
  62 /* This is unused on X86 and X86_64, but is used as the global
  63  *  allocation pointer by the cheney GC, and, in some instances, as
  64  *  the global allocation pointer on PPC/GENCGC. This should probably
  65  *  be cleaned up such that it only needs to exist on cheney. At the
  66  *  moment, it is also used by the GENCGC, to hold the pseudo_atomic
  67  *  bits, and is tightly coupled to reg_ALLOC by the assembly
  68  *  routines. */
  69 extern lispobj *dynamic_space_free_pointer;
  70 #endif
  71
  72 # ifndef LISP_FEATURE_GENCGC
  73 extern lispobj *current_auto_gc_trigger;
  74 # endif
  75
  76 extern lispobj *current_dynamic_space;
  77
  78 extern void globals_init(void);
  79
  80 #else /* LANGUAGE_ASSEMBLY */
  81
  82 # ifdef LISP_FEATURE_MIPS
  83 #  ifdef __linux__
  84 #   define EXTERN(name,bytes) .globl name
  85 #  else
  86 #   define EXTERN(name,bytes) .extern name bytes
  87 #  endif
  88 # endif
  89 /**/
  90 # ifdef LISP_FEATURE_SPARC
  91 #  ifdef SVR4
  92 #   define EXTERN(name,bytes) .global name
  93 #  else
  94 #   define EXTERN(name,bytes) .global _ ## name
  95 #  endif
  96 # endif
  97 /**/
  98 # ifdef LISP_FEATURE_ALPHA
  99 #  ifdef __linux__
 100 #   define EXTERN(name,bytes) .globl name
 101 #  endif
 102 # endif
 103 /**/
 104 # ifdef LISP_FEATURE_PPC
 105 #  ifdef LISP_FEATURE_DARWIN
 106 #   define EXTERN(name,bytes) .globl _ ## name
 107 #  else
 108 #   define EXTERN(name,bytes) .globl name
 109 #  endif
 110 # endif
 111 /**/
 112 # if defined(LISP_FEATURE_X86) || defined(LISP_FEATURE_X86_64)
 113 #  define EXTERN(name,bytes) .global name
 114 # endif
 115
 116 # if defined(LISP_FEATURE_ALPHA) || defined(LISP_FEATURE_X86_64)
 117 #  define POINTERSIZE 8
 118 # else
 119 #  define POINTERSIZE 4
 120 # endif
 121
 122 #ifndef LISP_FEATURE_SB_THREAD
 123 EXTERN(foreign_function_call_active, 4)
 124 #endif
 125
 126 #if !defined(LISP_FEATURE_SB_THREAD) && !defined(LISP_FEATURE_C_STACK_IS_CONTROL_STACK)
 127 EXTERN(current_control_stack_pointer, POINTERSIZE)
 128 #endif
 129 EXTERN(current_control_frame_pointer, POINTERSIZE)
 130 # if !defined(LISP_FEATURE_X86) && !defined(LISP_FEATURE_X86_64)
 131 EXTERN(current_binding_stack_pointer, POINTERSIZE)
 132 # endif
 133 # ifndef LISP_FEATURE_GENCGC
 134 EXTERN(dynamic_space_free_pointer, POINTERSIZE)
 135 # endif
 136
 137 #endif /* LANGUAGE_ASSEMBLY */
 138
 139 #endif /* _INCLUDED_GLOBALS_H_ */