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 /* Currently threads live only on x86oid platforms, but this thing
  24  * cannot ever work with threads, so... */
  25 #if !defined(LISP_FEATURE_SB_THREAD) && !defined(LISP_FEATURE_X86) && !defined(LISP_FEATURE_X86_64)
  26 #define FOREIGN_FUNCTION_CALL_FLAG
  27 #endif
  28
  29 #ifndef LANGUAGE_ASSEMBLY
  30
  31 #ifdef FOREIGN_FUNCTION_CALL_FLAG
  32 extern int foreign_function_call_active;
  33 #endif
  34
  35 extern size_t dynamic_space_size;
  36 extern 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 extern lispobj *current_control_stack_pointer;
  52 extern lispobj *current_control_frame_pointer;
  53 # if !defined(LISP_FEATURE_X86) && !defined(LISP_FEATURE_X86_64)
  54 extern lispobj *current_binding_stack_pointer;
  55 # endif
  56
  57 #if !defined(LISP_FEATURE_X86) && !defined(LISP_FEATURE_X86_64)
  58 /* This is unused on X86 and X86_64, but is used as the global
  59  *  allocation pointer by the cheney GC, and, in some instances, as
  60  *  the global allocation pointer on PPC/GENCGC. This should probably
  61  *  be cleaned up such that it only needs to exist on cheney. At the
  62  *  moment, it is also used by the GENCGC, to hold the pseudo_atomic
  63  *  bits, and is tightly coupled to reg_ALLOC by the assembly
  64  *  routines. */
  65 extern lispobj *dynamic_space_free_pointer;
  66 #endif
  67
  68 # ifndef LISP_FEATURE_GENCGC
  69 extern lispobj *current_auto_gc_trigger;
  70 # endif
  71
  72 extern lispobj *current_dynamic_space;
  73
  74 extern void globals_init(void);
  75
  76 #else /* LANGUAGE_ASSEMBLY */
  77
  78 # ifdef LISP_FEATURE_MIPS
  79 #  ifdef __linux__
  80 #   define EXTERN(name,bytes) .globl name
  81 #  else
  82 #   define EXTERN(name,bytes) .extern name bytes
  83 #  endif
  84 # endif
  85 /**/
  86 # ifdef LISP_FEATURE_SPARC
  87 #  ifdef SVR4
  88 #   define EXTERN(name,bytes) .global name
  89 #  else
  90 #   define EXTERN(name,bytes) .global _ ## name
  91 #  endif
  92 # endif
  93 /**/
  94 # ifdef LISP_FEATURE_ALPHA
  95 #  ifdef __linux__
  96 #   define EXTERN(name,bytes) .globl name
  97 #  endif
  98 # endif
  99 /**/
 100 # ifdef LISP_FEATURE_PPC
 101 #  ifdef LISP_FEATURE_DARWIN
 102 #   define EXTERN(name,bytes) .globl _ ## name
 103 #  else
 104 #   define EXTERN(name,bytes) .globl name
 105 #  endif
 106 # endif
 107 /**/
 108 # if defined(LISP_FEATURE_X86) || defined(LISP_FEATURE_X86_64)
 109 #  define EXTERN(name,bytes) .global name
 110 # endif
 111
 112 # if defined(LISP_FEATURE_ALPHA) || defined(LISP_FEATURE_X86_64)
 113 #  define POINTERSIZE 8
 114 # else
 115 #  define POINTERSIZE 4
 116 # endif
 117
 118 #ifdef FOREIGN_FUNCTION_CALL_FLAG
 119 EXTERN(foreign_function_call_active, 4)
 120 #endif
 121
 122 EXTERN(current_control_stack_pointer, POINTERSIZE)
 123 EXTERN(current_control_frame_pointer, POINTERSIZE)
 124 # if !defined(LISP_FEATURE_X86) && !defined(LISP_FEATURE_X86_64)
 125 EXTERN(current_binding_stack_pointer, POINTERSIZE)
 126 # endif
 127 # ifndef LISP_FEATURE_GENCGC
 128 EXTERN(dynamic_space_free_pointer, POINTERSIZE)
 129 # endif
 130
 131 #endif /* LANGUAGE_ASSEMBLY */
 132
 133 #endif /* _INCLUDED_GLOBALS_H_ */