libguile/instructions.h

   1 /* Copyright (C) 2001, 2009, 2012 Free Software Foundation, Inc.
   2  *
   3  * This library is free software; you can redistribute it and/or
   4  * modify it under the terms of the GNU Lesser General Public License
   5  * as published by the Free Software Foundation; either version 3 of
   6  * the License, or (at your option) any later version.
   7  *
   8  * This library is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * Lesser General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU Lesser General Public
  14  * License along with this library; if not, write to the Free Software
  15  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  16  * 02110-1301 USA
  17  */
  18
  19 #ifndef _SCM_INSTRUCTIONS_H_
  20 #define _SCM_INSTRUCTIONS_H_
  21
  22 #include <libguile.h>
  23 #include <libguile/vm-operations.h>
  24
  25 enum scm_rtl_opcode
  26   {
  27 #define ENUM(opcode, tag, name, meta) scm_rtl_op_##tag = opcode,
  28     FOR_EACH_VM_OPERATION(ENUM)
  29 #undef ENUM
  30   };
  31
  32 #define SCM_PACK_RTL_8_8_8(op,a,b,c) ((op) | ((a) << 8) | ((b) << 16) | ((c) << 24))
  33 #define SCM_PACK_RTL_8_16(op,a,b) ((op) | ((a) << 8) | ((b) << 16))
  34 #define SCM_PACK_RTL_16_8(op,a,b) ((op) | ((a) << 8) | ((b) << 24))
  35 #define SCM_PACK_RTL_24(op,a) ((op) | ((a) << 8))
  36
  37 #define SCM_UNPACK_RTL_8_8_8(op,a,b,c)    \
  38   do                                      \
  39     {                                     \
  40       a = (op >> 8) & 0xff;               \
  41       b = (op >> 16) & 0xff;              \
  42       c = op >> 24;                       \
  43     }                                     \
  44   while (0)
  45
  46 #define SCM_UNPACK_RTL_8_16(op,a,b)       \
  47   do                                      \
  48     {                                     \
  49       a = (op >> 8) & 0xff;               \
  50       b = op >> 16;                       \
  51     }                                     \
  52   while (0)
  53
  54 #define SCM_UNPACK_RTL_16_8(op,a,b)       \
  55   do                                      \
  56     {                                     \
  57       a = (op >> 8) & 0xffff;             \
  58       b = op >> 24;                       \
  59     }                                     \
  60   while (0)
  61
  62 #define SCM_UNPACK_RTL_12_12(op,a,b)      \
  63   do                                      \
  64     {                                     \
  65       a = (op >> 8) & 0xfff;              \
  66       b = op >> 20;                       \
  67     }                                     \
  68   while (0)
  69
  70 #define SCM_UNPACK_RTL_24(op,a)           \
  71   do                                      \
  72     {                                     \
  73       a = op >> 8;                        \
  74     }                                     \
  75   while (0)
  76
  77 #define SCM_VM_NUM_INSTRUCTIONS (1<<8)
  78 #define SCM_VM_INSTRUCTION_MASK (SCM_VM_NUM_INSTRUCTIONS-1)
  79
  80 enum scm_opcode {
  81 #define VM_INSTRUCTION_TO_OPCODE 1
  82 #include <libguile/vm-expand.h>
  83 #include <libguile/vm-i-system.i>
  84 #include <libguile/vm-i-scheme.i>
  85 #include <libguile/vm-i-loader.i>
  86 #undef VM_INSTRUCTION_TO_OPCODE
  87 };
  88
  89 SCM_INTERNAL SCM scm_rtl_instruction_list (void);
  90
  91 SCM_API SCM scm_instruction_list (void);
  92 SCM_API SCM scm_instruction_p (SCM obj);
  93 SCM_API SCM scm_instruction_length (SCM inst);
  94 SCM_API SCM scm_instruction_pops (SCM inst);
  95 SCM_API SCM scm_instruction_pushes (SCM inst);
  96 SCM_API SCM scm_instruction_to_opcode (SCM inst);
  97 SCM_API SCM scm_opcode_to_instruction (SCM op);
  98
  99 SCM_INTERNAL void scm_bootstrap_instructions (void);
 100 SCM_INTERNAL void scm_init_instructions (void);
 101
 102 #endif /* _SCM_INSTRUCTIONS_H_ */
 103
 104 /*
 105   Local Variables:
 106   c-file-style: "gnu"
 107   End:
 108 */