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author | Stan Shebs <shebs@codesourcery.com> | 1999-04-16 01:34:07 +0000 |
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committer | Stan Shebs <shebs@codesourcery.com> | 1999-04-16 01:34:07 +0000 |
commit | 071ea11e85eb9d529cc5eb3d35f6247466a21b99 (patch) | |
tree | 5deda65b8d7b04d1f4cbc534c3206d328e1267ec /gdb/scm-tags.h | |
parent | 1730ec6b1848f0f32154277f788fb29f88d8475b (diff) | |
download | gdb-071ea11e85eb9d529cc5eb3d35f6247466a21b99.zip gdb-071ea11e85eb9d529cc5eb3d35f6247466a21b99.tar.gz gdb-071ea11e85eb9d529cc5eb3d35f6247466a21b99.tar.bz2 |
Initial creation of sourceware repository
Diffstat (limited to 'gdb/scm-tags.h')
-rw-r--r-- | gdb/scm-tags.h | 385 |
1 files changed, 0 insertions, 385 deletions
diff --git a/gdb/scm-tags.h b/gdb/scm-tags.h deleted file mode 100644 index fbe45cc..0000000 --- a/gdb/scm-tags.h +++ /dev/null @@ -1,385 +0,0 @@ -/* This is a minimally edited version of Guile's tags.h. */ -/* classes: h_files */ - -#ifndef TAGSH -#define TAGSH -/* Copyright (C) 1995 Free Software Foundation, Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - * - * As a special exception, the Free Software Foundation gives permission - * for additional uses of the text contained in its release of GUILE. - * - * The exception is that, if you link the GUILE library with other files - * to produce an executable, this does not by itself cause the - * resulting executable to be covered by the GNU General Public License. - * Your use of that executable is in no way restricted on account of - * linking the GUILE library code into it. - * - * This exception does not however invalidate any other reasons why - * the executable file might be covered by the GNU General Public License. - * - * This exception applies only to the code released by the - * Free Software Foundation under the name GUILE. If you copy - * code from other Free Software Foundation releases into a copy of - * GUILE, as the General Public License permits, the exception does - * not apply to the code that you add in this way. To avoid misleading - * anyone as to the status of such modified files, you must delete - * this exception notice from them. - * - * If you write modifications of your own for GUILE, it is your choice - * whether to permit this exception to apply to your modifications. - * If you do not wish that, delete this exception notice. - */ - - -/** This file defines the format of SCM values and cons pairs. - ** It is here that tag bits are assigned for various purposes. - **/ - - -/* Three Bit Tags - * - * 000 -- a non-immediate value. Points into the pair heap. - * - * 001 -- a gloc (i.e., a resolved global variable in a CAR in a code graph) - * or the CAR of an object handle (i.e., the tagged pointer to the - * vtable part of a user-defined object). - * - * If X has this tag, the value at CDAR(X - 1) distinguishes - * glocs from object handles. The distinction only needs - * to be made in a few places. Only a few parts of the code know - * about glocs. In most cases, when a value in the CAR of a pair - * has the tag 001, it means that the pair is an object handle. - * - * 010 -- the tag for immediate, exact integers. - * - * 011 -- in the CAR of a pair, this tag indicates that the pair is a closure. - * The remaining bits of the CAR are a pointer into the pair heap - * to the code graph for the closure. - * - * 1xy -- an extension tag which means that there is a five or six bit - * tag to the left of the low three bits. See the nice diagrams - * in ../doc/code.doc if you want to know what the bits mean. - */ - - - - - -#define scm_tc3_cons 0 -#define scm_tc3_cons_gloc 1 -#define scm_tc3_closure 3 - -#define scm_tc7_ssymbol 5 -#define scm_tc7_msymbol 7 -#define scm_tc7_string 13 -#define scm_tc7_bvect 15 -#define scm_tc7_vector 21 -#define scm_tc7_lvector 23 -#define scm_tc7_ivect 29 -#define scm_tc7_uvect 31 -/* spare 37 39 */ -#define scm_tc7_fvect 45 -#define scm_tc7_dvect 47 -#define scm_tc7_cvect 53 -#define scm_tc7_port 55 -#define scm_tc7_contin 61 -#define scm_tc7_cclo 63 -/* spare 69 71 77 79 */ -#define scm_tc7_subr_0 85 -#define scm_tc7_subr_1 87 -#define scm_tc7_cxr 93 -#define scm_tc7_subr_3 95 -#define scm_tc7_subr_2 101 -#define scm_tc7_asubr 103 -#define scm_tc7_subr_1o 109 -#define scm_tc7_subr_2o 111 -#define scm_tc7_lsubr_2 117 -#define scm_tc7_lsubr 119 -#define scm_tc7_rpsubr 125 - -#define scm_tc7_smob 127 -#define scm_tc_free_cell 127 - -#define scm_tc16_flo 0x017f -#define scm_tc_flo 0x017fL - -#define SCM_REAL_PART (1L<<16) -#define SCM_IMAG_PART (2L<<16) -#define scm_tc_dblr (scm_tc16_flo|REAL_PART) -#define scm_tc_dblc (scm_tc16_flo|REAL_PART|IMAG_PART) - -#define scm_tc16_bigpos 0x027f -#define scm_tc16_bigneg 0x037f - -#define scm_tc16_fport (scm_tc7_port + 0*256L) -#define scm_tc16_pipe (scm_tc7_port + 1*256L) -#define scm_tc16_strport (scm_tc7_port + 2*256L) -#define scm_tc16_sfport (scm_tc7_port + 3*256L) - - - -/* For cons pairs with immediate values in the CAR */ -#define scm_tcs_cons_imcar 2:case 4:case 6:case 10:\ - case 12:case 14:case 18:case 20:\ - case 22:case 26:case 28:case 30:\ - case 34:case 36:case 38:case 42:\ - case 44:case 46:case 50:case 52:\ - case 54:case 58:case 60:case 62:\ - case 66:case 68:case 70:case 74:\ - case 76:case 78:case 82:case 84:\ - case 86:case 90:case 92:case 94:\ - case 98:case 100:case 102:case 106:\ - case 108:case 110:case 114:case 116:\ - case 118:case 122:case 124:case 126 - -/* For cons pairs with non-immediate values in the CAR */ -#define scm_tcs_cons_nimcar 0:case 8:case 16:case 24:\ - case 32:case 40:case 48:case 56:\ - case 64:case 72:case 80:case 88:\ - case 96:case 104:case 112:case 120 - -/* A CONS_GLOC occurs in code. It's CAR is a pointer to the - * CDR of a variable. The low order bits of the CAR are 001. - * The CDR of the gloc is the code continuation. - */ -#define scm_tcs_cons_gloc 1:case 9:case 17:case 25:\ - case 33:case 41:case 49:case 57:\ - case 65:case 73:case 81:case 89:\ - case 97:case 105:case 113:case 121 - -#define scm_tcs_closures 3:case 11:case 19:case 27:\ - case 35:case 43:case 51:case 59:\ - case 67:case 75:case 83:case 91:\ - case 99:case 107:case 115:case 123 - -#define scm_tcs_subrs scm_tc7_asubr:case scm_tc7_subr_0:case scm_tc7_subr_1:case scm_tc7_cxr:\ - case scm_tc7_subr_3:case scm_tc7_subr_2:case scm_tc7_rpsubr:case scm_tc7_subr_1o:\ - case scm_tc7_subr_2o:case scm_tc7_lsubr_2:case scm_tc7_lsubr - -#define scm_tcs_symbols scm_tc7_ssymbol:case scm_tc7_msymbol - -#define scm_tcs_bignums tc16_bigpos:case tc16_bigneg - - - -/* References to objects are of type SCM. Values may be non-immediate - * (pointers) or immediate (encoded, immutable, scalar values that fit - * in an SCM variable). - */ - -typedef long SCM; - -/* Cray machines have pointers that are incremented once for each word, - * rather than each byte, the 3 most significant bits encode the byte - * within the word. The following macros deal with this by storing the - * native Cray pointers like the ones that looks like scm expects. This - * is done for any pointers that might appear in the car of a scm_cell, pointers - * to scm_vector elts, functions, &c are not munged. - */ -#ifdef _UNICOS -# define SCM2PTR(x) ((int)(x) >> 3) -# define PTR2SCM(x) (((SCM)(x)) << 3) -# define SCM_POINTERS_MUNGED -#else -# define SCM2PTR(x) (x) -# define PTR2SCM(x) ((SCM)(x)) -#endif /* def _UNICOS */ - - - -/* Immediate? Predicates - */ -#define SCM_IMP(x) (6 & (int)(x)) -#define SCM_NIMP(x) (!SCM_IMP(x)) - - - -enum scm_tags -{ - scm_tc8_char = 0xf4 -}; - -#define SCM_ITAG8(X) ((int)(X) & 0xff) -#define SCM_MAKE_ITAG8(X, TAG) (((X)<<8) + TAG) -#define SCM_ITAG8_DATA(X) ((X)>>8) - - - -/* Local Environment Structure - */ -#define SCM_ILOCP(n) ((0xff & (int)(n))==0xfc) -#define SCM_ILOC00 (0x000000fcL) -#define SCM_IDINC (0x00100000L) -#define SCM_ICDR (0x00080000L) -#define SCM_IFRINC (0x00000100L) -#define SCM_IDSTMSK (-SCM_IDINC) -#define SCM_IFRAME(n) ((int)((SCM_ICDR-SCM_IFRINC)>>8) & ((int)(n)>>8)) -#define SCM_IDIST(n) (((unsigned long)(n))>>20) -#define SCM_ICDRP(n) (SCM_ICDR & (n)) - - -/* Immediate Symbols, Special Symbols, Flags (various constants). - */ - -/* ISYMP tests for ISPCSYM and ISYM */ -#define SCM_ISYMP(n) ((0x187 & (int)(n))==4) - -/* IFLAGP tests for ISPCSYM, ISYM and IFLAG */ -#define SCM_IFLAGP(n) ((0x87 & (int)(n))==4) -#define SCM_ISYMNUM(n) ((int)((n)>>9)) -#define SCM_ISYMCHARS(n) (scm_isymnames[SCM_ISYMNUM(n)]) -#define SCM_MAKSPCSYM(n) (((n)<<9)+((n)<<3)+4L) -#define SCM_MAKISYM(n) (((n)<<9)+0x74L) -#define SCM_MAKIFLAG(n) (((n)<<9)+0x174L) - -/* This table must agree with the declarations - * in repl.c: {Names of immediate symbols}. - * - * These are used only in eval but their values - * have to be allocated here. - * - */ - -#define SCM_IM_AND SCM_MAKSPCSYM(0) -#define SCM_IM_BEGIN SCM_MAKSPCSYM(1) -#define SCM_IM_CASE SCM_MAKSPCSYM(2) -#define SCM_IM_COND SCM_MAKSPCSYM(3) -#define SCM_IM_DO SCM_MAKSPCSYM(4) -#define SCM_IM_IF SCM_MAKSPCSYM(5) -#define SCM_IM_LAMBDA SCM_MAKSPCSYM(6) -#define SCM_IM_LET SCM_MAKSPCSYM(7) -#define SCM_IM_LETSTAR SCM_MAKSPCSYM(8) -#define SCM_IM_LETREC SCM_MAKSPCSYM(9) -#define SCM_IM_OR SCM_MAKSPCSYM(10) -#define SCM_IM_QUOTE SCM_MAKSPCSYM(11) -#define SCM_IM_SET SCM_MAKSPCSYM(12) -#define SCM_IM_DEFINE SCM_MAKSPCSYM(13) -#define SCM_IM_APPLY SCM_MAKISYM(14) -#define SCM_IM_CONT SCM_MAKISYM(15) -#define SCM_NUM_ISYMS 16 - -/* Important immediates - */ - -#define SCM_BOOL_F SCM_MAKIFLAG(SCM_NUM_ISYMS+0) -#define SCM_BOOL_T SCM_MAKIFLAG(SCM_NUM_ISYMS+1) -#define SCM_UNDEFINED SCM_MAKIFLAG(SCM_NUM_ISYMS+2) -#define SCM_EOF_VAL SCM_MAKIFLAG(SCM_NUM_ISYMS+3) - -#ifdef SICP -#define SCM_EOL SCM_BOOL_F -#else -#define SCM_EOL SCM_MAKIFLAG(SCM_NUM_ISYMS+4) -#endif - -#define SCM_UNSPECIFIED SCM_MAKIFLAG(SCM_NUM_ISYMS+5) - - - -/* Heap Pairs and the Empty List Predicates - */ -#define SCM_NULLP(x) (SCM_EOL == (x)) -#define SCM_NNULLP(x) (SCM_EOL != (x)) -#define SCM_CELLP(x) (!SCM_NCELLP(x)) -#define SCM_NCELLP(x) ((sizeof(scm_cell)-1) & (int)(x)) - - - -#define SCM_UNBNDP(x) (SCM_UNDEFINED==(x)) - - - -/* Testing and Changing GC Marks in Various Standard Positions - */ -#define SCM_GCMARKP(x) (1 & (int)SCM_CDR(x)) -#define SCM_GC8MARKP(x) (0x80 & (int)SCM_CAR(x)) -#define SCM_SETGCMARK(x) (SCM_CDR(x) |= 1) -#define SCM_CLRGCMARK(x) (SCM_CDR(x) &= ~1L) -#define SCM_SETGC8MARK(x) (SCM_CAR(x) |= 0x80) -#define SCM_CLRGC8MARK(x) (SCM_CAR(x) &= ~0x80L) - - -/* Extracting Tag Bits, With or Without GC Safety and Optional Bits - */ -#define SCM_TYP3(x) (7 & (int)SCM_CAR(x)) -#define SCM_TYP7(x) (0x7f & (int)SCM_CAR(x)) -#define SCM_TYP7S(x) (0x7d & (int)SCM_CAR(x)) -#define SCM_TYP16(x) (0xffff & (int)SCM_CAR(x)) -#define SCM_TYP16S(x) (0xfeff & (int)SCM_CAR(x)) -#define SCM_GCTYP16(x) (0xff7f & (int)SCM_CAR(x)) - - -/* Two slightly extensible types: smobs and ptobs. - * - */ -#define SCM_SMOBNUM(x) (0x0ff & (CAR(x)>>8)); -#define SCM_PTOBNUM(x) (0x0ff & (CAR(x)>>8)); - - - - -#define SCM_DIRP(x) (SCM_NIMP(x) && (TYP16(x)==(scm_tc16_dir))) -#define SCM_OPDIRP(x) (SCM_NIMP(x) && (CAR(x)==(scm_tc16_dir | OPN))) - - - -/* Lvectors - */ -#define SCM_LVECTORP(x) (TYP7(x)==tc7_lvector) - - -#if 0 - -/* Sockets - */ -#define tc_socket (tc7_port | OPN) -#define SCM_SOCKP(x) (((0x7f | OPN | RDNG | WRTNG) & CAR(x))==(tc_socket)) -#define SCM_SOCKTYP(x) (CAR(x)>>24) - - - -extern int scm_tc16_key_vector; -#define SCM_KEYVECP(X) (scm_tc16_key_vector == TYP16 (X)) -#define SCM_KEYVECLEN(OBJ) (((unsigned long)CAR (obj)) >> 16) - - -#define SCM_MALLOCDATA(obj) ((char *)CDR(obj)) -#define SCM_MALLOCLEN(obj) (((unsigned long)CAR (obj)) >> 16) -#define SCM_WORDDATA(obj) (CDR (obj)) - - -#define SCM_BYTECODEP(X) ((TYP7 (X) == tc7_cclo) && (CCLO_SUBR (X) == rb_proc)) -#define SCM_BYTECODE_CONSTANTS(X) (VELTS(X)[1]) -#define SCM_BYTECODE_CODE(X) (VELTS(X)[2]) -#define SCM_BYTECODE_NAME(X) (VELTS(X)[3]) -#define SCM_BYTECODE_BCODE(X) (VELTS(X)[4]) -#define SCM_BYTECODE_ELTS 5 - - -#define SCM_FREEP(x) (CAR(x)==tc_free_cell) -#define SCM_NFREEP(x) (!FREEP(x)) - -#endif /* 0*/ - -#ifdef __STDC__ - -#else /* STDC */ - -#endif /* STDC */ - - -#endif /* TAGSH */ |