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 #ifdef LISP_FEATURE_SB_SAFEPOINT
  81 # define GC_SAFEPOINT_PAGE_ADDR ((lispobj) gc_safepoint_page)
  82 extern char gc_safepoint_page[];
  83 #endif
  84
  85 #else /* LANGUAGE_ASSEMBLY */
  86
  87 # ifdef LISP_FEATURE_MIPS
  88 #  ifdef __linux__
  89 #   define EXTERN(name,bytes) .globl name
  90 #  else
  91 #   define EXTERN(name,bytes) .extern name bytes
  92 #  endif
  93 # endif
  94 /**/
  95 # ifdef LISP_FEATURE_SPARC
  96 #  ifdef SVR4
  97 #   define EXTERN(name,bytes) .global name
  98 #  else
  99 #   define EXTERN(name,bytes) .global _ ## name
 100 #  endif
 101 # endif
 102 /**/
 103 # ifdef LISP_FEATURE_ALPHA
 104 #  ifdef __linux__
 105 #   define EXTERN(name,bytes) .globl name
 106 #  endif
 107 # endif
 108 /**/
 109 # ifdef LISP_FEATURE_PPC
 110 #  ifdef LISP_FEATURE_DARWIN
 111 #   define EXTERN(name,bytes) .globl _ ## name
 112 #  else
 113 #   define EXTERN(name,bytes) .globl name
 114 #  endif
 115 # endif
 116 /**/
 117 # if defined(LISP_FEATURE_X86) || defined(LISP_FEATURE_X86_64)
 118 #  define EXTERN(name,bytes) .global name
 119 # endif
 120
 121 # if defined(LISP_FEATURE_ALPHA) || defined(LISP_FEATURE_X86_64)
 122 #  define POINTERSIZE 8
 123 # else
 124 #  define POINTERSIZE 4
 125 # endif
 126
 127 #ifndef LISP_FEATURE_SB_THREAD
 128 EXTERN(foreign_function_call_active, 4)
 129 #endif
 130
 131 #if !defined(LISP_FEATURE_SB_THREAD) && !defined(LISP_FEATURE_C_STACK_IS_CONTROL_STACK)
 132 EXTERN(current_control_stack_pointer, POINTERSIZE)
 133 #endif
 134 EXTERN(current_control_frame_pointer, POINTERSIZE)
 135 # if !defined(LISP_FEATURE_X86) && !defined(LISP_FEATURE_X86_64)
 136 EXTERN(current_binding_stack_pointer, POINTERSIZE)
 137 # endif
 138 # ifndef LISP_FEATURE_GENCGC
 139 EXTERN(dynamic_space_free_pointer, POINTERSIZE)
 140 # endif
 141
 142 #endif /* LANGUAGE_ASSEMBLY */
 143
 144 #endif /* _INCLUDED_GLOBALS_H_ */