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