[8833] | 1 | /* Output dbx-format symbol table information from GNU compiler. |
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| 2 | Copyright (C) 1987, 88, 92, 93, 94, 1995 Free Software Foundation, Inc. |
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| 3 | |
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| 4 | This file is part of GNU CC. |
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| 5 | |
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| 6 | GNU CC is free software; you can redistribute it and/or modify |
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| 7 | it under the terms of the GNU General Public License as published by |
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| 8 | the Free Software Foundation; either version 2, or (at your option) |
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| 9 | any later version. |
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| 10 | |
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| 11 | GNU CC is distributed in the hope that it will be useful, |
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 14 | GNU General Public License for more details. |
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| 15 | |
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| 16 | You should have received a copy of the GNU General Public License |
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| 17 | along with GNU CC; see the file COPYING. If not, write to |
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| 18 | the Free Software Foundation, 59 Temple Place - Suite 330, |
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| 19 | Boston, MA 02111-1307, USA. */ |
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| 20 | |
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| 21 | |
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| 22 | /* Output dbx-format symbol table data. |
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| 23 | This consists of many symbol table entries, each of them |
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| 24 | a .stabs assembler pseudo-op with four operands: |
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| 25 | a "name" which is really a description of one symbol and its type, |
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| 26 | a "code", which is a symbol defined in stab.h whose name starts with N_, |
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| 27 | an unused operand always 0, |
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| 28 | and a "value" which is an address or an offset. |
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| 29 | The name is enclosed in doublequote characters. |
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| 30 | |
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| 31 | Each function, variable, typedef, and structure tag |
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| 32 | has a symbol table entry to define it. |
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| 33 | The beginning and end of each level of name scoping within |
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| 34 | a function are also marked by special symbol table entries. |
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| 35 | |
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| 36 | The "name" consists of the symbol name, a colon, a kind-of-symbol letter, |
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| 37 | and a data type number. The data type number may be followed by |
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| 38 | "=" and a type definition; normally this will happen the first time |
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| 39 | the type number is mentioned. The type definition may refer to |
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| 40 | other types by number, and those type numbers may be followed |
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| 41 | by "=" and nested definitions. |
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| 42 | |
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| 43 | This can make the "name" quite long. |
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| 44 | When a name is more than 80 characters, we split the .stabs pseudo-op |
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| 45 | into two .stabs pseudo-ops, both sharing the same "code" and "value". |
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| 46 | The first one is marked as continued with a double-backslash at the |
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| 47 | end of its "name". |
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| 48 | |
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| 49 | The kind-of-symbol letter distinguished function names from global |
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| 50 | variables from file-scope variables from parameters from auto |
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| 51 | variables in memory from typedef names from register variables. |
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| 52 | See `dbxout_symbol'. |
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| 53 | |
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| 54 | The "code" is mostly redundant with the kind-of-symbol letter |
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| 55 | that goes in the "name", but not entirely: for symbols located |
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| 56 | in static storage, the "code" says which segment the address is in, |
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| 57 | which controls how it is relocated. |
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| 58 | |
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| 59 | The "value" for a symbol in static storage |
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| 60 | is the core address of the symbol (actually, the assembler |
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| 61 | label for the symbol). For a symbol located in a stack slot |
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| 62 | it is the stack offset; for one in a register, the register number. |
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| 63 | For a typedef symbol, it is zero. |
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| 64 | |
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| 65 | If DEBUG_SYMS_TEXT is defined, all debugging symbols must be |
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| 66 | output while in the text section. |
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| 67 | |
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| 68 | For more on data type definitions, see `dbxout_type'. */ |
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| 69 | |
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| 70 | /* Include these first, because they may define MIN and MAX. */ |
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| 71 | #include <stdio.h> |
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| 72 | #include <errno.h> |
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| 73 | |
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| 74 | #include "config.h" |
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| 75 | #include "tree.h" |
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| 76 | #include "rtl.h" |
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| 77 | #include "flags.h" |
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| 78 | #include "regs.h" |
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| 79 | #include "insn-config.h" |
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| 80 | #include "reload.h" |
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| 81 | #include "defaults.h" |
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| 82 | #include "output.h" /* ASM_OUTPUT_SOURCE_LINE may refer to sdb functions. */ |
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| 83 | |
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| 84 | #ifndef errno |
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| 85 | extern int errno; |
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| 86 | #endif |
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| 87 | |
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| 88 | #ifdef XCOFF_DEBUGGING_INFO |
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| 89 | #include "xcoffout.h" |
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| 90 | #endif |
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| 91 | |
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| 92 | #ifndef ASM_STABS_OP |
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| 93 | #define ASM_STABS_OP ".stabs" |
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| 94 | #endif |
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| 95 | |
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| 96 | #ifndef ASM_STABN_OP |
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| 97 | #define ASM_STABN_OP ".stabn" |
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| 98 | #endif |
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| 99 | |
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| 100 | #ifndef DBX_TYPE_DECL_STABS_CODE |
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| 101 | #define DBX_TYPE_DECL_STABS_CODE N_LSYM |
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| 102 | #endif |
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| 103 | |
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| 104 | #ifndef DBX_STATIC_CONST_VAR_CODE |
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| 105 | #define DBX_STATIC_CONST_VAR_CODE N_FUN |
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| 106 | #endif |
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| 107 | |
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| 108 | #ifndef DBX_REGPARM_STABS_CODE |
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| 109 | #define DBX_REGPARM_STABS_CODE N_RSYM |
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| 110 | #endif |
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| 111 | |
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| 112 | #ifndef DBX_REGPARM_STABS_LETTER |
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| 113 | #define DBX_REGPARM_STABS_LETTER 'P' |
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| 114 | #endif |
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| 115 | |
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| 116 | /* This is used for parameters passed by invisible reference in a register. */ |
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| 117 | #ifndef GDB_INV_REF_REGPARM_STABS_LETTER |
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| 118 | #define GDB_INV_REF_REGPARM_STABS_LETTER 'a' |
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| 119 | #endif |
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| 120 | |
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| 121 | #ifndef DBX_MEMPARM_STABS_LETTER |
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| 122 | #define DBX_MEMPARM_STABS_LETTER 'p' |
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| 123 | #endif |
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| 124 | |
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| 125 | #ifndef FILE_NAME_JOINER |
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| 126 | #define FILE_NAME_JOINER "/" |
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| 127 | #endif |
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| 128 | |
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| 129 | /* Nonzero means if the type has methods, only output debugging |
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| 130 | information if methods are actually written to the asm file. */ |
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| 131 | |
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| 132 | static int flag_minimal_debug = 1; |
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| 133 | |
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| 134 | /* Nonzero if we have actually used any of the GDB extensions |
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| 135 | to the debugging format. The idea is that we use them for the |
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| 136 | first time only if there's a strong reason, but once we have done that, |
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| 137 | we use them whenever convenient. */ |
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| 138 | |
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| 139 | static int have_used_extensions = 0; |
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| 140 | |
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| 141 | /* Number for the next N_SOL filename stabs label. The number 0 is reserved |
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| 142 | for the N_SO filename stabs label. */ |
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| 143 | |
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| 144 | static int source_label_number = 1; |
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| 145 | |
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| 146 | char *getpwd (); |
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| 147 | |
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| 148 | /* Typical USG systems don't have stab.h, and they also have |
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| 149 | no use for DBX-format debugging info. */ |
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| 150 | |
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| 151 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
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| 152 | |
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| 153 | #ifdef DEBUG_SYMS_TEXT |
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| 154 | #define FORCE_TEXT text_section (); |
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| 155 | #else |
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| 156 | #define FORCE_TEXT |
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| 157 | #endif |
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| 158 | |
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| 159 | #if defined (USG) || defined (NO_STAB_H) |
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| 160 | #include "gstab.h" /* If doing DBX on sysV, use our own stab.h. */ |
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| 161 | #else |
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| 162 | #include <stab.h> /* On BSD, use the system's stab.h. */ |
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| 163 | |
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| 164 | /* This is a GNU extension we need to reference in this file. */ |
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| 165 | #ifndef N_CATCH |
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| 166 | #define N_CATCH 0x54 |
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| 167 | #endif |
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| 168 | #endif /* not USG */ |
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| 169 | |
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| 170 | #ifdef __GNU_STAB__ |
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| 171 | #define STAB_CODE_TYPE enum __stab_debug_code |
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| 172 | #else |
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| 173 | #define STAB_CODE_TYPE int |
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| 174 | #endif |
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| 175 | |
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| 176 | /* 1 if PARM is passed to this function in memory. */ |
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| 177 | |
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| 178 | #define PARM_PASSED_IN_MEMORY(PARM) \ |
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| 179 | (GET_CODE (DECL_INCOMING_RTL (PARM)) == MEM) |
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| 180 | |
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| 181 | /* A C expression for the integer offset value of an automatic variable |
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| 182 | (N_LSYM) having address X (an RTX). */ |
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| 183 | #ifndef DEBUGGER_AUTO_OFFSET |
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| 184 | #define DEBUGGER_AUTO_OFFSET(X) \ |
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| 185 | (GET_CODE (X) == PLUS ? INTVAL (XEXP (X, 1)) : 0) |
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| 186 | #endif |
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| 187 | |
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| 188 | /* A C expression for the integer offset value of an argument (N_PSYM) |
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| 189 | having address X (an RTX). The nominal offset is OFFSET. */ |
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| 190 | #ifndef DEBUGGER_ARG_OFFSET |
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| 191 | #define DEBUGGER_ARG_OFFSET(OFFSET, X) (OFFSET) |
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| 192 | #endif |
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| 193 | |
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| 194 | /* Stream for writing to assembler file. */ |
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| 195 | |
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| 196 | static FILE *asmfile; |
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| 197 | |
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| 198 | /* Last source file name mentioned in a NOTE insn. */ |
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| 199 | |
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| 200 | static char *lastfile; |
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| 201 | |
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| 202 | /* Current working directory. */ |
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| 203 | |
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| 204 | static char *cwd; |
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| 205 | |
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| 206 | enum typestatus {TYPE_UNSEEN, TYPE_XREF, TYPE_DEFINED}; |
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| 207 | |
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| 208 | /* Vector recording the status of describing C data types. |
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| 209 | When we first notice a data type (a tree node), |
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| 210 | we assign it a number using next_type_number. |
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| 211 | That is its index in this vector. |
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| 212 | The vector element says whether we have yet output |
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| 213 | the definition of the type. TYPE_XREF says we have |
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| 214 | output it as a cross-reference only. */ |
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| 215 | |
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| 216 | enum typestatus *typevec; |
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| 217 | |
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| 218 | /* Number of elements of space allocated in `typevec'. */ |
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| 219 | |
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| 220 | static int typevec_len; |
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| 221 | |
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| 222 | /* In dbx output, each type gets a unique number. |
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| 223 | This is the number for the next type output. |
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| 224 | The number, once assigned, is in the TYPE_SYMTAB_ADDRESS field. */ |
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| 225 | |
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| 226 | static int next_type_number; |
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| 227 | |
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| 228 | /* In dbx output, we must assign symbol-blocks id numbers |
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| 229 | in the order in which their beginnings are encountered. |
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| 230 | We output debugging info that refers to the beginning and |
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| 231 | end of the ranges of code in each block |
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| 232 | with assembler labels LBBn and LBEn, where n is the block number. |
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| 233 | The labels are generated in final, which assigns numbers to the |
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| 234 | blocks in the same way. */ |
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| 235 | |
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| 236 | static int next_block_number; |
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| 237 | |
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| 238 | /* These variables are for dbxout_symbol to communicate to |
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| 239 | dbxout_finish_symbol. |
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| 240 | current_sym_code is the symbol-type-code, a symbol N_... define in stab.h. |
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| 241 | current_sym_value and current_sym_addr are two ways to address the |
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| 242 | value to store in the symtab entry. |
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| 243 | current_sym_addr if nonzero represents the value as an rtx. |
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| 244 | If that is zero, current_sym_value is used. This is used |
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| 245 | when the value is an offset (such as for auto variables, |
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| 246 | register variables and parms). */ |
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| 247 | |
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| 248 | static STAB_CODE_TYPE current_sym_code; |
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| 249 | static int current_sym_value; |
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| 250 | static rtx current_sym_addr; |
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| 251 | |
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| 252 | /* Number of chars of symbol-description generated so far for the |
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| 253 | current symbol. Used by CHARS and CONTIN. */ |
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| 254 | |
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| 255 | static int current_sym_nchars; |
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| 256 | |
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| 257 | /* Report having output N chars of the current symbol-description. */ |
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| 258 | |
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| 259 | #define CHARS(N) (current_sym_nchars += (N)) |
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| 260 | |
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| 261 | /* Break the current symbol-description, generating a continuation, |
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| 262 | if it has become long. */ |
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| 263 | |
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| 264 | #ifndef DBX_CONTIN_LENGTH |
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| 265 | #define DBX_CONTIN_LENGTH 80 |
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| 266 | #endif |
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| 267 | |
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| 268 | #if DBX_CONTIN_LENGTH > 0 |
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| 269 | #define CONTIN \ |
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| 270 | do {if (current_sym_nchars > DBX_CONTIN_LENGTH) dbxout_continue ();} while (0) |
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| 271 | #else |
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| 272 | #define CONTIN |
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| 273 | #endif |
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| 274 | |
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| 275 | void dbxout_types (); |
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| 276 | void dbxout_args (); |
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| 277 | void dbxout_symbol (); |
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| 278 | static void dbxout_type_name (); |
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| 279 | static void dbxout_type (); |
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| 280 | static void dbxout_typedefs (); |
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| 281 | static void dbxout_symbol_name (); |
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| 282 | static void dbxout_symbol_location (); |
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| 283 | static void dbxout_prepare_symbol (); |
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| 284 | static void dbxout_finish_symbol (); |
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| 285 | static void dbxout_continue (); |
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| 286 | static void print_int_cst_octal (); |
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| 287 | static void print_octal (); |
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| 288 | |
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| 289 | #if 0 /* Not clear we will actually need this. */ |
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| 290 | |
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| 291 | /* Return the absolutized filename for the given relative |
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| 292 | filename. Note that if that filename is already absolute, it may |
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| 293 | still be returned in a modified form because this routine also |
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| 294 | eliminates redundant slashes and single dots and eliminates double |
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| 295 | dots to get a shortest possible filename from the given input |
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| 296 | filename. The absolutization of relative filenames is made by |
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| 297 | assuming that the given filename is to be taken as relative to |
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| 298 | the first argument (cwd) or to the current directory if cwd is |
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| 299 | NULL. */ |
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| 300 | |
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| 301 | static char * |
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| 302 | abspath (rel_filename) |
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| 303 | char *rel_filename; |
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| 304 | { |
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| 305 | /* Setup the current working directory as needed. */ |
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| 306 | char *abs_buffer |
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| 307 | = (char *) alloca (strlen (cwd) + strlen (rel_filename) + 1); |
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| 308 | char *endp = abs_buffer; |
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| 309 | char *outp, *inp; |
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| 310 | char *value; |
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| 311 | |
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| 312 | /* Copy the filename (possibly preceded by the current working |
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| 313 | directory name) into the absolutization buffer. */ |
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| 314 | |
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| 315 | { |
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| 316 | char *src_p; |
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| 317 | |
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| 318 | if (rel_filename[0] != '/') |
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| 319 | { |
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| 320 | src_p = cwd; |
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| 321 | while (*endp++ = *src_p++) |
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| 322 | continue; |
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| 323 | *(endp-1) = '/'; /* overwrite null */ |
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| 324 | } |
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| 325 | src_p = rel_filename; |
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| 326 | while (*endp++ = *src_p++) |
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| 327 | continue; |
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| 328 | if (endp[-1] == '/') |
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| 329 | *endp = '\0'; |
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| 330 | |
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| 331 | /* Now make a copy of abs_buffer into abs_buffer, shortening the |
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| 332 | filename (by taking out slashes and dots) as we go. */ |
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| 333 | |
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| 334 | outp = inp = abs_buffer; |
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| 335 | *outp++ = *inp++; /* copy first slash */ |
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| 336 | for (;;) |
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| 337 | { |
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| 338 | if (!inp[0]) |
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| 339 | break; |
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| 340 | else if (inp[0] == '/' && outp[-1] == '/') |
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| 341 | { |
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| 342 | inp++; |
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| 343 | continue; |
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| 344 | } |
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| 345 | else if (inp[0] == '.' && outp[-1] == '/') |
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| 346 | { |
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| 347 | if (!inp[1]) |
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| 348 | break; |
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| 349 | else if (inp[1] == '/') |
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| 350 | { |
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| 351 | inp += 2; |
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| 352 | continue; |
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| 353 | } |
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| 354 | else if ((inp[1] == '.') && (inp[2] == 0 || inp[2] == '/')) |
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| 355 | { |
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| 356 | inp += (inp[2] == '/') ? 3 : 2; |
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| 357 | outp -= 2; |
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| 358 | while (outp >= abs_buffer && *outp != '/') |
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| 359 | outp--; |
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| 360 | if (outp < abs_buffer) |
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| 361 | { |
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| 362 | /* Catch cases like /.. where we try to backup to a |
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| 363 | point above the absolute root of the logical file |
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| 364 | system. */ |
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| 365 | |
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| 366 | fprintf (stderr, "%s: invalid file name: %s\n", |
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| 367 | pname, rel_filename); |
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| 368 | exit (1); |
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| 369 | } |
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| 370 | *++outp = '\0'; |
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| 371 | continue; |
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| 372 | } |
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| 373 | } |
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| 374 | *outp++ = *inp++; |
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| 375 | } |
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| 376 | |
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| 377 | /* On exit, make sure that there is a trailing null, and make sure that |
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| 378 | the last character of the returned string is *not* a slash. */ |
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| 379 | |
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| 380 | *outp = '\0'; |
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| 381 | if (outp[-1] == '/') |
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| 382 | *--outp = '\0'; |
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| 383 | |
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| 384 | /* Make a copy (in the heap) of the stuff left in the absolutization |
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| 385 | buffer and return a pointer to the copy. */ |
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| 386 | |
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| 387 | value = (char *) oballoc (strlen (abs_buffer) + 1); |
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| 388 | strcpy (value, abs_buffer); |
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| 389 | return value; |
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| 390 | } |
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| 391 | #endif /* 0 */ |
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| 392 | |
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| 393 | /* At the beginning of compilation, start writing the symbol table. |
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| 394 | Initialize `typevec' and output the standard data types of C. */ |
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| 395 | |
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| 396 | void |
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| 397 | dbxout_init (asm_file, input_file_name, syms) |
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| 398 | FILE *asm_file; |
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| 399 | char *input_file_name; |
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| 400 | tree syms; |
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| 401 | { |
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| 402 | char ltext_label_name[100]; |
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| 403 | |
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| 404 | asmfile = asm_file; |
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| 405 | |
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| 406 | typevec_len = 100; |
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| 407 | typevec = (enum typestatus *) xmalloc (typevec_len * sizeof typevec[0]); |
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| 408 | bzero ((char *) typevec, typevec_len * sizeof typevec[0]); |
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| 409 | |
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| 410 | /* Convert Ltext into the appropriate format for local labels in case |
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| 411 | the system doesn't insert underscores in front of user generated |
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| 412 | labels. */ |
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| 413 | ASM_GENERATE_INTERNAL_LABEL (ltext_label_name, "Ltext", 0); |
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| 414 | |
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| 415 | /* Put the current working directory in an N_SO symbol. */ |
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| 416 | #ifndef DBX_WORKING_DIRECTORY /* Only some versions of DBX want this, |
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| 417 | but GDB always does. */ |
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| 418 | if (use_gnu_debug_info_extensions) |
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| 419 | #endif |
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| 420 | { |
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| 421 | if (!cwd && (cwd = getpwd ()) && (!*cwd || cwd[strlen (cwd) - 1] != '/')) |
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| 422 | { |
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| 423 | char *wdslash = xmalloc (strlen (cwd) + sizeof (FILE_NAME_JOINER)); |
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| 424 | sprintf (wdslash, "%s%s", cwd, FILE_NAME_JOINER); |
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| 425 | cwd = wdslash; |
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| 426 | } |
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| 427 | if (cwd) |
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| 428 | { |
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| 429 | #ifdef DBX_OUTPUT_MAIN_SOURCE_DIRECTORY |
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| 430 | DBX_OUTPUT_MAIN_SOURCE_DIRECTORY (asmfile, cwd); |
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| 431 | #else /* no DBX_OUTPUT_MAIN_SOURCE_DIRECTORY */ |
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| 432 | fprintf (asmfile, "%s ", ASM_STABS_OP); |
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| 433 | output_quoted_string (asmfile, cwd); |
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| 434 | fprintf (asmfile, ",%d,0,0,%s\n", N_SO, <ext_label_name[1]); |
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| 435 | #endif /* no DBX_OUTPUT_MAIN_SOURCE_DIRECTORY */ |
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| 436 | } |
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| 437 | } |
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| 438 | |
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| 439 | #ifdef DBX_OUTPUT_MAIN_SOURCE_FILENAME |
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| 440 | /* This should NOT be DBX_OUTPUT_SOURCE_FILENAME. That |
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| 441 | would give us an N_SOL, and we want an N_SO. */ |
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| 442 | DBX_OUTPUT_MAIN_SOURCE_FILENAME (asmfile, input_file_name); |
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| 443 | #else /* no DBX_OUTPUT_MAIN_SOURCE_FILENAME */ |
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| 444 | /* We include outputting `Ltext:' here, |
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| 445 | because that gives you a way to override it. */ |
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| 446 | /* Used to put `Ltext:' before the reference, but that loses on sun 4. */ |
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| 447 | fprintf (asmfile, "%s ", ASM_STABS_OP); |
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| 448 | output_quoted_string (asmfile, input_file_name); |
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| 449 | fprintf (asmfile, ",%d,0,0,%s\n", |
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| 450 | N_SO, <ext_label_name[1]); |
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| 451 | text_section (); |
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| 452 | ASM_OUTPUT_INTERNAL_LABEL (asmfile, "Ltext", 0); |
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| 453 | #endif /* no DBX_OUTPUT_MAIN_SOURCE_FILENAME */ |
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| 454 | |
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| 455 | /* Possibly output something to inform GDB that this compilation was by |
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| 456 | GCC. It's easier for GDB to parse it when after the N_SO's. This |
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| 457 | is used in Solaris 2. */ |
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| 458 | #ifdef ASM_IDENTIFY_GCC_AFTER_SOURCE |
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| 459 | ASM_IDENTIFY_GCC_AFTER_SOURCE (asmfile); |
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| 460 | #endif |
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| 461 | |
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| 462 | lastfile = input_file_name; |
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| 463 | |
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| 464 | next_type_number = 1; |
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| 465 | next_block_number = 2; |
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| 466 | |
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| 467 | /* Make sure that types `int' and `char' have numbers 1 and 2. |
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| 468 | Definitions of other integer types will refer to those numbers. |
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| 469 | (Actually it should no longer matter what their numbers are. |
---|
| 470 | Also, if any types with tags have been defined, dbxout_symbol |
---|
| 471 | will output them first, so the numbers won't be 1 and 2. That |
---|
| 472 | happens in C++. So it's a good thing it should no longer matter). */ |
---|
| 473 | |
---|
| 474 | #ifdef DBX_OUTPUT_STANDARD_TYPES |
---|
| 475 | DBX_OUTPUT_STANDARD_TYPES (syms); |
---|
| 476 | #else |
---|
| 477 | dbxout_symbol (TYPE_NAME (integer_type_node), 0); |
---|
| 478 | dbxout_symbol (TYPE_NAME (char_type_node), 0); |
---|
| 479 | #endif |
---|
| 480 | |
---|
| 481 | /* Get all permanent types that have typedef names, |
---|
| 482 | and output them all, except for those already output. */ |
---|
| 483 | |
---|
| 484 | dbxout_typedefs (syms); |
---|
| 485 | } |
---|
| 486 | |
---|
| 487 | /* Output any typedef names for types described by TYPE_DECLs in SYMS, |
---|
| 488 | in the reverse order from that which is found in SYMS. */ |
---|
| 489 | |
---|
| 490 | static void |
---|
| 491 | dbxout_typedefs (syms) |
---|
| 492 | tree syms; |
---|
| 493 | { |
---|
| 494 | if (syms) |
---|
| 495 | { |
---|
| 496 | dbxout_typedefs (TREE_CHAIN (syms)); |
---|
| 497 | if (TREE_CODE (syms) == TYPE_DECL) |
---|
| 498 | { |
---|
| 499 | tree type = TREE_TYPE (syms); |
---|
| 500 | if (TYPE_NAME (type) |
---|
| 501 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
---|
| 502 | && ! TREE_ASM_WRITTEN (TYPE_NAME (type))) |
---|
| 503 | dbxout_symbol (TYPE_NAME (type), 0); |
---|
| 504 | } |
---|
| 505 | } |
---|
| 506 | } |
---|
| 507 | |
---|
| 508 | /* Output debugging info to FILE to switch to sourcefile FILENAME. */ |
---|
| 509 | |
---|
| 510 | void |
---|
| 511 | dbxout_source_file (file, filename) |
---|
| 512 | FILE *file; |
---|
| 513 | char *filename; |
---|
| 514 | { |
---|
| 515 | char ltext_label_name[100]; |
---|
| 516 | |
---|
| 517 | if (filename && (lastfile == 0 || strcmp (filename, lastfile))) |
---|
| 518 | { |
---|
| 519 | #ifdef DBX_OUTPUT_SOURCE_FILENAME |
---|
| 520 | DBX_OUTPUT_SOURCE_FILENAME (file, filename); |
---|
| 521 | #else |
---|
| 522 | ASM_GENERATE_INTERNAL_LABEL (ltext_label_name, "Ltext", |
---|
| 523 | source_label_number); |
---|
| 524 | fprintf (file, "%s ", ASM_STABS_OP); |
---|
| 525 | output_quoted_string (file, filename); |
---|
| 526 | fprintf (file, ",%d,0,0,%s\n", N_SOL, <ext_label_name[1]); |
---|
| 527 | if (current_function_decl != NULL_TREE |
---|
| 528 | && DECL_SECTION_NAME (current_function_decl) != NULL_TREE) |
---|
| 529 | ; /* Don't change section amid function. */ |
---|
| 530 | else |
---|
| 531 | text_section (); |
---|
| 532 | ASM_OUTPUT_INTERNAL_LABEL (file, "Ltext", source_label_number); |
---|
| 533 | source_label_number++; |
---|
| 534 | #endif |
---|
| 535 | lastfile = filename; |
---|
| 536 | } |
---|
| 537 | } |
---|
| 538 | |
---|
| 539 | /* Output a line number symbol entry into output stream FILE, |
---|
| 540 | for source file FILENAME and line number LINENO. */ |
---|
| 541 | |
---|
| 542 | void |
---|
| 543 | dbxout_source_line (file, filename, lineno) |
---|
| 544 | FILE *file; |
---|
| 545 | char *filename; |
---|
| 546 | int lineno; |
---|
| 547 | { |
---|
| 548 | dbxout_source_file (file, filename); |
---|
| 549 | |
---|
| 550 | #ifdef ASM_OUTPUT_SOURCE_LINE |
---|
| 551 | ASM_OUTPUT_SOURCE_LINE (file, lineno); |
---|
| 552 | #else |
---|
| 553 | fprintf (file, "\t%s %d,0,%d\n", ASM_STABD_OP, N_SLINE, lineno); |
---|
| 554 | #endif |
---|
| 555 | } |
---|
| 556 | |
---|
| 557 | /* At the end of compilation, finish writing the symbol table. |
---|
| 558 | Unless you define DBX_OUTPUT_MAIN_SOURCE_FILE_END, the default is |
---|
| 559 | to do nothing. */ |
---|
| 560 | |
---|
| 561 | void |
---|
| 562 | dbxout_finish (file, filename) |
---|
| 563 | FILE *file; |
---|
| 564 | char *filename; |
---|
| 565 | { |
---|
| 566 | #ifdef DBX_OUTPUT_MAIN_SOURCE_FILE_END |
---|
| 567 | DBX_OUTPUT_MAIN_SOURCE_FILE_END (file, filename); |
---|
| 568 | #endif /* DBX_OUTPUT_MAIN_SOURCE_FILE_END */ |
---|
| 569 | } |
---|
| 570 | |
---|
| 571 | /* Continue a symbol-description that gets too big. |
---|
| 572 | End one symbol table entry with a double-backslash |
---|
| 573 | and start a new one, eventually producing something like |
---|
| 574 | .stabs "start......\\",code,0,value |
---|
| 575 | .stabs "...rest",code,0,value */ |
---|
| 576 | |
---|
| 577 | static void |
---|
| 578 | dbxout_continue () |
---|
| 579 | { |
---|
| 580 | #ifdef DBX_CONTIN_CHAR |
---|
| 581 | fprintf (asmfile, "%c", DBX_CONTIN_CHAR); |
---|
| 582 | #else |
---|
| 583 | fprintf (asmfile, "\\\\"); |
---|
| 584 | #endif |
---|
| 585 | dbxout_finish_symbol (NULL_TREE); |
---|
| 586 | fprintf (asmfile, "%s \"", ASM_STABS_OP); |
---|
| 587 | current_sym_nchars = 0; |
---|
| 588 | } |
---|
| 589 | |
---|
| 590 | /* Subroutine of `dbxout_type'. Output the type fields of TYPE. |
---|
| 591 | This must be a separate function because anonymous unions require |
---|
| 592 | recursive calls. */ |
---|
| 593 | |
---|
| 594 | static void |
---|
| 595 | dbxout_type_fields (type) |
---|
| 596 | tree type; |
---|
| 597 | { |
---|
| 598 | tree tem; |
---|
| 599 | /* Output the name, type, position (in bits), size (in bits) of each |
---|
| 600 | field. */ |
---|
| 601 | for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem)) |
---|
| 602 | { |
---|
| 603 | /* Omit here local type decls until we know how to support them. */ |
---|
| 604 | if (TREE_CODE (tem) == TYPE_DECL) |
---|
| 605 | continue; |
---|
| 606 | /* Omit fields whose position or size are variable. */ |
---|
| 607 | else if (TREE_CODE (tem) == FIELD_DECL |
---|
| 608 | && (TREE_CODE (DECL_FIELD_BITPOS (tem)) != INTEGER_CST |
---|
| 609 | || TREE_CODE (DECL_SIZE (tem)) != INTEGER_CST)) |
---|
| 610 | continue; |
---|
| 611 | /* Omit here the nameless fields that are used to skip bits. */ |
---|
| 612 | else if (TREE_CODE (tem) != CONST_DECL) |
---|
| 613 | { |
---|
| 614 | /* Continue the line if necessary, |
---|
| 615 | but not before the first field. */ |
---|
| 616 | if (tem != TYPE_FIELDS (type)) |
---|
| 617 | CONTIN; |
---|
| 618 | |
---|
| 619 | if (use_gnu_debug_info_extensions |
---|
| 620 | && flag_minimal_debug |
---|
| 621 | && TREE_CODE (tem) == FIELD_DECL |
---|
| 622 | && DECL_VIRTUAL_P (tem) |
---|
| 623 | && DECL_ASSEMBLER_NAME (tem)) |
---|
| 624 | { |
---|
| 625 | have_used_extensions = 1; |
---|
| 626 | CHARS (3 + IDENTIFIER_LENGTH (DECL_ASSEMBLER_NAME (tem))); |
---|
| 627 | fputs (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (tem)), asmfile); |
---|
| 628 | dbxout_type (DECL_FCONTEXT (tem), 0, 0); |
---|
| 629 | fprintf (asmfile, ":"); |
---|
| 630 | dbxout_type (TREE_TYPE (tem), 0, 0); |
---|
| 631 | fprintf (asmfile, ",%d;", |
---|
| 632 | TREE_INT_CST_LOW (DECL_FIELD_BITPOS (tem))); |
---|
| 633 | continue; |
---|
| 634 | } |
---|
| 635 | |
---|
| 636 | if (DECL_NAME (tem)) |
---|
| 637 | { |
---|
| 638 | fprintf (asmfile, "%s:", IDENTIFIER_POINTER (DECL_NAME (tem))); |
---|
| 639 | CHARS (2 + IDENTIFIER_LENGTH (DECL_NAME (tem))); |
---|
| 640 | } |
---|
| 641 | else |
---|
| 642 | { |
---|
| 643 | fprintf (asmfile, ":"); |
---|
| 644 | CHARS (2); |
---|
| 645 | } |
---|
| 646 | |
---|
| 647 | if (use_gnu_debug_info_extensions |
---|
| 648 | && (TREE_PRIVATE (tem) || TREE_PROTECTED (tem) |
---|
| 649 | || TREE_CODE (tem) != FIELD_DECL)) |
---|
| 650 | { |
---|
| 651 | have_used_extensions = 1; |
---|
| 652 | putc ('/', asmfile); |
---|
| 653 | putc ((TREE_PRIVATE (tem) ? '0' |
---|
| 654 | : TREE_PROTECTED (tem) ? '1' : '2'), |
---|
| 655 | asmfile); |
---|
| 656 | CHARS (2); |
---|
| 657 | } |
---|
| 658 | |
---|
| 659 | dbxout_type ((TREE_CODE (tem) == FIELD_DECL |
---|
| 660 | && DECL_BIT_FIELD_TYPE (tem)) |
---|
| 661 | ? DECL_BIT_FIELD_TYPE (tem) |
---|
| 662 | : TREE_TYPE (tem), 0, 0); |
---|
| 663 | |
---|
| 664 | if (TREE_CODE (tem) == VAR_DECL) |
---|
| 665 | { |
---|
| 666 | if (TREE_STATIC (tem) && use_gnu_debug_info_extensions) |
---|
| 667 | { |
---|
| 668 | char *name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (tem)); |
---|
| 669 | have_used_extensions = 1; |
---|
| 670 | fprintf (asmfile, ":%s;", name); |
---|
| 671 | CHARS (strlen (name)); |
---|
| 672 | } |
---|
| 673 | else |
---|
| 674 | { |
---|
| 675 | /* If TEM is non-static, GDB won't understand it. */ |
---|
| 676 | fprintf (asmfile, ",0,0;"); |
---|
| 677 | } |
---|
| 678 | } |
---|
| 679 | else if (TREE_CODE (DECL_FIELD_BITPOS (tem)) == INTEGER_CST) |
---|
| 680 | { |
---|
| 681 | fprintf (asmfile, ",%d,%d;", |
---|
| 682 | TREE_INT_CST_LOW (DECL_FIELD_BITPOS (tem)), |
---|
| 683 | TREE_INT_CST_LOW (DECL_SIZE (tem))); |
---|
| 684 | } |
---|
| 685 | CHARS (23); |
---|
| 686 | } |
---|
| 687 | } |
---|
| 688 | } |
---|
| 689 | |
---|
| 690 | /* Subroutine of `dbxout_type_methods'. Output debug info about the |
---|
| 691 | method described DECL. DEBUG_NAME is an encoding of the method's |
---|
| 692 | type signature. ??? We may be able to do without DEBUG_NAME altogether |
---|
| 693 | now. */ |
---|
| 694 | |
---|
| 695 | static void |
---|
| 696 | dbxout_type_method_1 (decl, debug_name) |
---|
| 697 | tree decl; |
---|
| 698 | char *debug_name; |
---|
| 699 | { |
---|
| 700 | char c1 = 'A', c2; |
---|
| 701 | |
---|
| 702 | if (TREE_CODE (TREE_TYPE (decl)) == FUNCTION_TYPE) |
---|
| 703 | c2 = '?'; |
---|
| 704 | else /* it's a METHOD_TYPE. */ |
---|
| 705 | { |
---|
| 706 | tree firstarg = TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl))); |
---|
| 707 | /* A for normal functions. |
---|
| 708 | B for `const' member functions. |
---|
| 709 | C for `volatile' member functions. |
---|
| 710 | D for `const volatile' member functions. */ |
---|
| 711 | if (TYPE_READONLY (TREE_TYPE (firstarg))) |
---|
| 712 | c1 += 1; |
---|
| 713 | if (TYPE_VOLATILE (TREE_TYPE (firstarg))) |
---|
| 714 | c1 += 2; |
---|
| 715 | |
---|
| 716 | if (DECL_VINDEX (decl)) |
---|
| 717 | c2 = '*'; |
---|
| 718 | else |
---|
| 719 | c2 = '.'; |
---|
| 720 | } |
---|
| 721 | |
---|
| 722 | fprintf (asmfile, ":%s;%c%c%c", debug_name, |
---|
| 723 | TREE_PRIVATE (decl) ? '0' : TREE_PROTECTED (decl) ? '1' : '2', c1, c2); |
---|
| 724 | CHARS (IDENTIFIER_LENGTH (DECL_ASSEMBLER_NAME (decl)) + 6 |
---|
| 725 | - (debug_name - IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)))); |
---|
| 726 | if (DECL_VINDEX (decl)) |
---|
| 727 | { |
---|
| 728 | fprintf (asmfile, "%d;", |
---|
| 729 | TREE_INT_CST_LOW (DECL_VINDEX (decl))); |
---|
| 730 | dbxout_type (DECL_CONTEXT (decl), 0, 0); |
---|
| 731 | fprintf (asmfile, ";"); |
---|
| 732 | CHARS (8); |
---|
| 733 | } |
---|
| 734 | } |
---|
| 735 | |
---|
| 736 | /* Subroutine of `dbxout_type'. Output debug info about the methods defined |
---|
| 737 | in TYPE. */ |
---|
| 738 | |
---|
| 739 | static void |
---|
| 740 | dbxout_type_methods (type) |
---|
| 741 | register tree type; |
---|
| 742 | { |
---|
| 743 | /* C++: put out the method names and their parameter lists */ |
---|
| 744 | tree methods = TYPE_METHODS (type); |
---|
| 745 | tree type_encoding; |
---|
| 746 | register tree fndecl; |
---|
| 747 | register tree last; |
---|
| 748 | char formatted_type_identifier_length[16]; |
---|
| 749 | register int type_identifier_length; |
---|
| 750 | |
---|
| 751 | if (methods == NULL_TREE) |
---|
| 752 | return; |
---|
| 753 | |
---|
| 754 | type_encoding = DECL_NAME (TYPE_NAME (type)); |
---|
| 755 | |
---|
| 756 | #if 0 |
---|
| 757 | /* C++: Template classes break some assumptions made by this code about |
---|
| 758 | the class names, constructor names, and encodings for assembler |
---|
| 759 | label names. For now, disable output of dbx info for them. */ |
---|
| 760 | { |
---|
| 761 | char *ptr = IDENTIFIER_POINTER (type_encoding); |
---|
| 762 | /* This should use index. (mrs) */ |
---|
| 763 | while (*ptr && *ptr != '<') ptr++; |
---|
| 764 | if (*ptr != 0) |
---|
| 765 | { |
---|
| 766 | static int warned; |
---|
| 767 | if (!warned) |
---|
| 768 | { |
---|
| 769 | warned = 1; |
---|
| 770 | #ifdef HAVE_TEMPLATES |
---|
| 771 | if (warn_template_debugging) |
---|
| 772 | warning ("dbx info for template class methods not yet supported"); |
---|
| 773 | #endif |
---|
| 774 | } |
---|
| 775 | return; |
---|
| 776 | } |
---|
| 777 | } |
---|
| 778 | #endif |
---|
| 779 | |
---|
| 780 | type_identifier_length = IDENTIFIER_LENGTH (type_encoding); |
---|
| 781 | |
---|
| 782 | sprintf(formatted_type_identifier_length, "%d", type_identifier_length); |
---|
| 783 | |
---|
| 784 | if (TREE_CODE (methods) == FUNCTION_DECL) |
---|
| 785 | fndecl = methods; |
---|
| 786 | else if (TREE_VEC_ELT (methods, 0) != NULL_TREE) |
---|
| 787 | fndecl = TREE_VEC_ELT (methods, 0); |
---|
| 788 | else |
---|
| 789 | fndecl = TREE_VEC_ELT (methods, 1); |
---|
| 790 | |
---|
| 791 | while (fndecl) |
---|
| 792 | { |
---|
| 793 | tree name = DECL_NAME (fndecl); |
---|
| 794 | int need_prefix = 1; |
---|
| 795 | |
---|
| 796 | /* Group together all the methods for the same operation. |
---|
| 797 | These differ in the types of the arguments. */ |
---|
| 798 | for (last = NULL_TREE; |
---|
| 799 | fndecl && (last == NULL_TREE || DECL_NAME (fndecl) == DECL_NAME (last)); |
---|
| 800 | fndecl = TREE_CHAIN (fndecl)) |
---|
| 801 | /* Output the name of the field (after overloading), as |
---|
| 802 | well as the name of the field before overloading, along |
---|
| 803 | with its parameter list */ |
---|
| 804 | { |
---|
| 805 | /* This is the "mangled" name of the method. |
---|
| 806 | It encodes the argument types. */ |
---|
| 807 | char *debug_name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (fndecl)); |
---|
| 808 | int destructor = 0; |
---|
| 809 | |
---|
| 810 | CONTIN; |
---|
| 811 | |
---|
| 812 | last = fndecl; |
---|
| 813 | |
---|
| 814 | if (DECL_IGNORED_P (fndecl)) |
---|
| 815 | continue; |
---|
| 816 | |
---|
| 817 | if (flag_minimal_debug) |
---|
| 818 | { |
---|
| 819 | /* Detect ordinary methods because their mangled names |
---|
| 820 | start with the operation name. */ |
---|
| 821 | if (!strncmp (IDENTIFIER_POINTER (name), debug_name, |
---|
| 822 | IDENTIFIER_LENGTH (name))) |
---|
| 823 | { |
---|
| 824 | debug_name += IDENTIFIER_LENGTH (name); |
---|
| 825 | if (debug_name[0] == '_' && debug_name[1] == '_') |
---|
| 826 | { |
---|
| 827 | char *method_name = debug_name + 2; |
---|
| 828 | char *length_ptr = formatted_type_identifier_length; |
---|
| 829 | /* Get past const and volatile qualifiers. */ |
---|
| 830 | while (*method_name == 'C' || *method_name == 'V') |
---|
| 831 | method_name++; |
---|
| 832 | /* Skip digits for length of type_encoding. */ |
---|
| 833 | while (*method_name == *length_ptr && *length_ptr) |
---|
| 834 | length_ptr++, method_name++; |
---|
| 835 | if (! strncmp (method_name, |
---|
| 836 | IDENTIFIER_POINTER (type_encoding), |
---|
| 837 | type_identifier_length)) |
---|
| 838 | method_name += type_identifier_length; |
---|
| 839 | debug_name = method_name; |
---|
| 840 | } |
---|
| 841 | } |
---|
| 842 | /* Detect constructors by their style of name mangling. */ |
---|
| 843 | else if (debug_name[0] == '_' && debug_name[1] == '_') |
---|
| 844 | { |
---|
| 845 | char *ctor_name = debug_name + 2; |
---|
| 846 | char *length_ptr = formatted_type_identifier_length; |
---|
| 847 | while (*ctor_name == 'C' || *ctor_name == 'V') |
---|
| 848 | ctor_name++; |
---|
| 849 | /* Skip digits for length of type_encoding. */ |
---|
| 850 | while (*ctor_name == *length_ptr && *length_ptr) |
---|
| 851 | length_ptr++, ctor_name++; |
---|
| 852 | if (!strncmp (IDENTIFIER_POINTER (type_encoding), ctor_name, |
---|
| 853 | type_identifier_length)) |
---|
| 854 | debug_name = ctor_name + type_identifier_length; |
---|
| 855 | } |
---|
| 856 | /* The other alternative is a destructor. */ |
---|
| 857 | else |
---|
| 858 | destructor = 1; |
---|
| 859 | |
---|
| 860 | /* Output the operation name just once, for the first method |
---|
| 861 | that we output. */ |
---|
| 862 | if (need_prefix) |
---|
| 863 | { |
---|
| 864 | fprintf (asmfile, "%s::", IDENTIFIER_POINTER (name)); |
---|
| 865 | CHARS (IDENTIFIER_LENGTH (name) + 2); |
---|
| 866 | need_prefix = 0; |
---|
| 867 | } |
---|
| 868 | } |
---|
| 869 | |
---|
| 870 | dbxout_type (TREE_TYPE (fndecl), 0, destructor); |
---|
| 871 | |
---|
| 872 | dbxout_type_method_1 (fndecl, debug_name); |
---|
| 873 | } |
---|
| 874 | if (!need_prefix) |
---|
| 875 | { |
---|
| 876 | putc (';', asmfile); |
---|
| 877 | CHARS (1); |
---|
| 878 | } |
---|
| 879 | } |
---|
| 880 | } |
---|
| 881 | |
---|
| 882 | /* Emit a "range" type specification, which has the form: |
---|
| 883 | "r<index type>;<lower bound>;<upper bound>;". |
---|
| 884 | TYPE is an INTEGER_TYPE. */ |
---|
| 885 | |
---|
| 886 | static void |
---|
| 887 | dbxout_range_type (type) |
---|
| 888 | tree type; |
---|
| 889 | { |
---|
| 890 | fprintf (asmfile, "r"); |
---|
| 891 | if (TREE_TYPE (type)) |
---|
| 892 | dbxout_type (TREE_TYPE (type), 0, 0); |
---|
| 893 | else if (TREE_CODE (type) != INTEGER_TYPE) |
---|
| 894 | dbxout_type (type, 0, 0); /* E.g. Pascal's ARRAY [BOOLEAN] of INTEGER */ |
---|
| 895 | else |
---|
| 896 | { |
---|
| 897 | /* This used to say `r1' and we used to take care |
---|
| 898 | to make sure that `int' was type number 1. */ |
---|
| 899 | fprintf (asmfile, "%d", TYPE_SYMTAB_ADDRESS (integer_type_node)); |
---|
| 900 | } |
---|
| 901 | if (TREE_CODE (TYPE_MIN_VALUE (type)) == INTEGER_CST) |
---|
| 902 | fprintf (asmfile, ";%d", |
---|
| 903 | TREE_INT_CST_LOW (TYPE_MIN_VALUE (type))); |
---|
| 904 | else |
---|
| 905 | fprintf (asmfile, ";0"); |
---|
| 906 | if (TREE_CODE (TYPE_MAX_VALUE (type)) == INTEGER_CST) |
---|
| 907 | fprintf (asmfile, ";%d;", |
---|
| 908 | TREE_INT_CST_LOW (TYPE_MAX_VALUE (type))); |
---|
| 909 | else |
---|
| 910 | fprintf (asmfile, ";-1;"); |
---|
| 911 | } |
---|
| 912 | |
---|
| 913 | /* Output a reference to a type. If the type has not yet been |
---|
| 914 | described in the dbx output, output its definition now. |
---|
| 915 | For a type already defined, just refer to its definition |
---|
| 916 | using the type number. |
---|
| 917 | |
---|
| 918 | If FULL is nonzero, and the type has been described only with |
---|
| 919 | a forward-reference, output the definition now. |
---|
| 920 | If FULL is zero in this case, just refer to the forward-reference |
---|
| 921 | using the number previously allocated. |
---|
| 922 | |
---|
| 923 | If SHOW_ARG_TYPES is nonzero, we output a description of the argument |
---|
| 924 | types for a METHOD_TYPE. */ |
---|
| 925 | |
---|
| 926 | static void |
---|
| 927 | dbxout_type (type, full, show_arg_types) |
---|
| 928 | tree type; |
---|
| 929 | int full; |
---|
| 930 | int show_arg_types; |
---|
| 931 | { |
---|
| 932 | register tree tem; |
---|
| 933 | static int anonymous_type_number = 0; |
---|
| 934 | |
---|
| 935 | /* If there was an input error and we don't really have a type, |
---|
| 936 | avoid crashing and write something that is at least valid |
---|
| 937 | by assuming `int'. */ |
---|
| 938 | if (type == error_mark_node) |
---|
| 939 | type = integer_type_node; |
---|
| 940 | else |
---|
| 941 | { |
---|
| 942 | type = TYPE_MAIN_VARIANT (type); |
---|
| 943 | if (TYPE_NAME (type) |
---|
| 944 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
---|
| 945 | && TYPE_DECL_SUPPRESS_DEBUG (TYPE_NAME (type))) |
---|
| 946 | full = 0; |
---|
| 947 | } |
---|
| 948 | |
---|
| 949 | if (TYPE_SYMTAB_ADDRESS (type) == 0) |
---|
| 950 | { |
---|
| 951 | /* Type has no dbx number assigned. Assign next available number. */ |
---|
| 952 | TYPE_SYMTAB_ADDRESS (type) = next_type_number++; |
---|
| 953 | |
---|
| 954 | /* Make sure type vector is long enough to record about this type. */ |
---|
| 955 | |
---|
| 956 | if (next_type_number == typevec_len) |
---|
| 957 | { |
---|
| 958 | typevec = |
---|
| 959 | (enum typestatus *) xrealloc (typevec, |
---|
| 960 | typevec_len * 2 * sizeof typevec[0]); |
---|
| 961 | bzero ((char *) (typevec + typevec_len), |
---|
| 962 | typevec_len * sizeof typevec[0]); |
---|
| 963 | typevec_len *= 2; |
---|
| 964 | } |
---|
| 965 | } |
---|
| 966 | |
---|
| 967 | /* Output the number of this type, to refer to it. */ |
---|
| 968 | fprintf (asmfile, "%d", TYPE_SYMTAB_ADDRESS (type)); |
---|
| 969 | CHARS (3); |
---|
| 970 | |
---|
| 971 | #ifdef DBX_TYPE_DEFINED |
---|
| 972 | if (DBX_TYPE_DEFINED (type)) |
---|
| 973 | return; |
---|
| 974 | #endif |
---|
| 975 | |
---|
| 976 | /* If this type's definition has been output or is now being output, |
---|
| 977 | that is all. */ |
---|
| 978 | |
---|
| 979 | switch (typevec[TYPE_SYMTAB_ADDRESS (type)]) |
---|
| 980 | { |
---|
| 981 | case TYPE_UNSEEN: |
---|
| 982 | break; |
---|
| 983 | case TYPE_XREF: |
---|
| 984 | /* If we have already had a cross reference, |
---|
| 985 | and either that's all we want or that's the best we could do, |
---|
| 986 | don't repeat the cross reference. |
---|
| 987 | Sun dbx crashes if we do. */ |
---|
| 988 | if (! full || TYPE_SIZE (type) == 0 |
---|
| 989 | /* No way in DBX fmt to describe a variable size. */ |
---|
| 990 | || TREE_CODE (TYPE_SIZE (type)) != INTEGER_CST) |
---|
| 991 | return; |
---|
| 992 | break; |
---|
| 993 | case TYPE_DEFINED: |
---|
| 994 | return; |
---|
| 995 | } |
---|
| 996 | |
---|
| 997 | #ifdef DBX_NO_XREFS |
---|
| 998 | /* For systems where dbx output does not allow the `=xsNAME:' syntax, |
---|
| 999 | leave the type-number completely undefined rather than output |
---|
| 1000 | a cross-reference. If we have already used GNU debug info extensions, |
---|
| 1001 | then it is OK to output a cross reference. This is necessary to get |
---|
| 1002 | proper C++ debug output. */ |
---|
| 1003 | if ((TREE_CODE (type) == RECORD_TYPE || TREE_CODE (type) == UNION_TYPE |
---|
| 1004 | || TREE_CODE (type) == QUAL_UNION_TYPE |
---|
| 1005 | || TREE_CODE (type) == ENUMERAL_TYPE) |
---|
| 1006 | && ! use_gnu_debug_info_extensions) |
---|
| 1007 | /* We must use the same test here as we use twice below when deciding |
---|
| 1008 | whether to emit a cross-reference. */ |
---|
| 1009 | if ((TYPE_NAME (type) != 0 |
---|
| 1010 | && ! (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
---|
| 1011 | && DECL_IGNORED_P (TYPE_NAME (type))) |
---|
| 1012 | && !full) |
---|
| 1013 | || TYPE_SIZE (type) == 0 |
---|
| 1014 | /* No way in DBX fmt to describe a variable size. */ |
---|
| 1015 | || TREE_CODE (TYPE_SIZE (type)) != INTEGER_CST) |
---|
| 1016 | { |
---|
| 1017 | typevec[TYPE_SYMTAB_ADDRESS (type)] = TYPE_XREF; |
---|
| 1018 | return; |
---|
| 1019 | } |
---|
| 1020 | #endif |
---|
| 1021 | |
---|
| 1022 | /* Output a definition now. */ |
---|
| 1023 | |
---|
| 1024 | fprintf (asmfile, "="); |
---|
| 1025 | CHARS (1); |
---|
| 1026 | |
---|
| 1027 | /* Mark it as defined, so that if it is self-referent |
---|
| 1028 | we will not get into an infinite recursion of definitions. */ |
---|
| 1029 | |
---|
| 1030 | typevec[TYPE_SYMTAB_ADDRESS (type)] = TYPE_DEFINED; |
---|
| 1031 | |
---|
| 1032 | switch (TREE_CODE (type)) |
---|
| 1033 | { |
---|
| 1034 | case VOID_TYPE: |
---|
| 1035 | case LANG_TYPE: |
---|
| 1036 | /* For a void type, just define it as itself; ie, "5=5". |
---|
| 1037 | This makes us consider it defined |
---|
| 1038 | without saying what it is. The debugger will make it |
---|
| 1039 | a void type when the reference is seen, and nothing will |
---|
| 1040 | ever override that default. */ |
---|
| 1041 | fprintf (asmfile, "%d", TYPE_SYMTAB_ADDRESS (type)); |
---|
| 1042 | CHARS (3); |
---|
| 1043 | break; |
---|
| 1044 | |
---|
| 1045 | case INTEGER_TYPE: |
---|
| 1046 | if (type == char_type_node && ! TREE_UNSIGNED (type)) |
---|
| 1047 | /* Output the type `char' as a subrange of itself! |
---|
| 1048 | I don't understand this definition, just copied it |
---|
| 1049 | from the output of pcc. |
---|
| 1050 | This used to use `r2' explicitly and we used to |
---|
| 1051 | take care to make sure that `char' was type number 2. */ |
---|
| 1052 | fprintf (asmfile, "r%d;0;127;", TYPE_SYMTAB_ADDRESS (type)); |
---|
| 1053 | else if (use_gnu_debug_info_extensions |
---|
| 1054 | && (TYPE_PRECISION (type) > TYPE_PRECISION (integer_type_node) |
---|
| 1055 | || TYPE_PRECISION (type) > HOST_BITS_PER_WIDE_INT)) |
---|
| 1056 | { |
---|
| 1057 | /* This used to say `r1' and we used to take care |
---|
| 1058 | to make sure that `int' was type number 1. */ |
---|
| 1059 | fprintf (asmfile, "r%d;", TYPE_SYMTAB_ADDRESS (integer_type_node)); |
---|
| 1060 | print_int_cst_octal (TYPE_MIN_VALUE (type)); |
---|
| 1061 | fprintf (asmfile, ";"); |
---|
| 1062 | print_int_cst_octal (TYPE_MAX_VALUE (type)); |
---|
| 1063 | fprintf (asmfile, ";"); |
---|
| 1064 | } |
---|
| 1065 | else /* Output other integer types as subranges of `int'. */ |
---|
| 1066 | dbxout_range_type (type); |
---|
| 1067 | CHARS (25); |
---|
| 1068 | break; |
---|
| 1069 | |
---|
| 1070 | case REAL_TYPE: |
---|
| 1071 | /* This used to say `r1' and we used to take care |
---|
| 1072 | to make sure that `int' was type number 1. */ |
---|
| 1073 | fprintf (asmfile, "r%d;%d;0;", TYPE_SYMTAB_ADDRESS (integer_type_node), |
---|
| 1074 | int_size_in_bytes (type)); |
---|
| 1075 | CHARS (16); |
---|
| 1076 | break; |
---|
| 1077 | |
---|
| 1078 | case CHAR_TYPE: |
---|
| 1079 | if (use_gnu_debug_info_extensions) |
---|
| 1080 | fprintf (asmfile, "@s%d;-20;", |
---|
| 1081 | BITS_PER_UNIT * int_size_in_bytes (type)); |
---|
| 1082 | else |
---|
| 1083 | /* Output the type `char' as a subrange of itself. |
---|
| 1084 | That is what pcc seems to do. */ |
---|
| 1085 | fprintf (asmfile, "r%d;0;%d;", TYPE_SYMTAB_ADDRESS (char_type_node), |
---|
| 1086 | TREE_UNSIGNED (type) ? 255 : 127); |
---|
| 1087 | CHARS (9); |
---|
| 1088 | break; |
---|
| 1089 | |
---|
| 1090 | case BOOLEAN_TYPE: |
---|
| 1091 | if (use_gnu_debug_info_extensions) |
---|
| 1092 | fprintf (asmfile, "@s%d;-16;", |
---|
| 1093 | BITS_PER_UNIT * int_size_in_bytes (type)); |
---|
| 1094 | else /* Define as enumeral type (False, True) */ |
---|
| 1095 | fprintf (asmfile, "eFalse:0,True:1,;"); |
---|
| 1096 | CHARS (17); |
---|
| 1097 | break; |
---|
| 1098 | |
---|
| 1099 | case FILE_TYPE: |
---|
| 1100 | putc ('d', asmfile); |
---|
| 1101 | CHARS (1); |
---|
| 1102 | dbxout_type (TREE_TYPE (type), 0, 0); |
---|
| 1103 | break; |
---|
| 1104 | |
---|
| 1105 | case COMPLEX_TYPE: |
---|
| 1106 | /* Differs from the REAL_TYPE by its new data type number */ |
---|
| 1107 | |
---|
| 1108 | if (TREE_CODE (TREE_TYPE (type)) == REAL_TYPE) |
---|
| 1109 | { |
---|
| 1110 | fprintf (asmfile, "r%d;%d;0;", |
---|
| 1111 | TYPE_SYMTAB_ADDRESS (type), |
---|
| 1112 | int_size_in_bytes (TREE_TYPE (type))); |
---|
| 1113 | CHARS (15); /* The number is probably incorrect here. */ |
---|
| 1114 | } |
---|
| 1115 | else |
---|
| 1116 | { |
---|
| 1117 | /* Output a complex integer type as a structure, |
---|
| 1118 | pending some other way to do it. */ |
---|
| 1119 | fprintf (asmfile, "s%d", int_size_in_bytes (type)); |
---|
| 1120 | |
---|
| 1121 | fprintf (asmfile, "real:"); |
---|
| 1122 | CHARS (10); |
---|
| 1123 | dbxout_type (TREE_TYPE (type), 0, 0); |
---|
| 1124 | fprintf (asmfile, ",%d,%d;", |
---|
| 1125 | 0, TYPE_PRECISION (TREE_TYPE (type))); |
---|
| 1126 | CHARS (8); |
---|
| 1127 | fprintf (asmfile, "imag:"); |
---|
| 1128 | CHARS (5); |
---|
| 1129 | dbxout_type (TREE_TYPE (type), 0, 0); |
---|
| 1130 | fprintf (asmfile, ",%d,%d;;", |
---|
| 1131 | TYPE_PRECISION (TREE_TYPE (type)), |
---|
| 1132 | TYPE_PRECISION (TREE_TYPE (type))); |
---|
| 1133 | CHARS (9); |
---|
| 1134 | } |
---|
| 1135 | break; |
---|
| 1136 | |
---|
| 1137 | case SET_TYPE: |
---|
| 1138 | if (use_gnu_debug_info_extensions) |
---|
| 1139 | { |
---|
| 1140 | have_used_extensions = 1; |
---|
| 1141 | fprintf (asmfile, "@s%d;", |
---|
| 1142 | BITS_PER_UNIT * int_size_in_bytes (type)); |
---|
| 1143 | /* Check if a bitstring type, which in Chill is |
---|
| 1144 | different from a [power]set. */ |
---|
| 1145 | if (TYPE_STRING_FLAG (type)) |
---|
| 1146 | fprintf (asmfile, "@S;"); |
---|
| 1147 | } |
---|
| 1148 | putc ('S', asmfile); |
---|
| 1149 | CHARS (1); |
---|
| 1150 | dbxout_type (TYPE_DOMAIN (type), 0, 0); |
---|
| 1151 | break; |
---|
| 1152 | |
---|
| 1153 | case ARRAY_TYPE: |
---|
| 1154 | /* Output "a" followed by a range type definition |
---|
| 1155 | for the index type of the array |
---|
| 1156 | followed by a reference to the target-type. |
---|
| 1157 | ar1;0;N;M for a C array of type M and size N+1. */ |
---|
| 1158 | /* Check if a character string type, which in Chill is |
---|
| 1159 | different from an array of characters. */ |
---|
| 1160 | if (TYPE_STRING_FLAG (type) && use_gnu_debug_info_extensions) |
---|
| 1161 | { |
---|
| 1162 | have_used_extensions = 1; |
---|
| 1163 | fprintf (asmfile, "@S;"); |
---|
| 1164 | } |
---|
| 1165 | tem = TYPE_DOMAIN (type); |
---|
| 1166 | if (tem == NULL) |
---|
| 1167 | fprintf (asmfile, "ar%d;0;-1;", |
---|
| 1168 | TYPE_SYMTAB_ADDRESS (integer_type_node)); |
---|
| 1169 | else |
---|
| 1170 | { |
---|
| 1171 | fprintf (asmfile, "a"); |
---|
| 1172 | dbxout_range_type (tem); |
---|
| 1173 | } |
---|
| 1174 | CHARS (17); |
---|
| 1175 | dbxout_type (TREE_TYPE (type), 0, 0); |
---|
| 1176 | break; |
---|
| 1177 | |
---|
| 1178 | case RECORD_TYPE: |
---|
| 1179 | case UNION_TYPE: |
---|
| 1180 | case QUAL_UNION_TYPE: |
---|
| 1181 | { |
---|
| 1182 | int i, n_baseclasses = 0; |
---|
| 1183 | |
---|
| 1184 | if (TYPE_BINFO (type) != 0 && TYPE_BINFO_BASETYPES (type) != 0) |
---|
| 1185 | n_baseclasses = TREE_VEC_LENGTH (TYPE_BINFO_BASETYPES (type)); |
---|
| 1186 | |
---|
| 1187 | /* Output a structure type. We must use the same test here as we |
---|
| 1188 | use in the DBX_NO_XREFS case above. */ |
---|
| 1189 | if ((TYPE_NAME (type) != 0 |
---|
| 1190 | && ! (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
---|
| 1191 | && DECL_IGNORED_P (TYPE_NAME (type))) |
---|
| 1192 | && !full) |
---|
| 1193 | || TYPE_SIZE (type) == 0 |
---|
| 1194 | /* No way in DBX fmt to describe a variable size. */ |
---|
| 1195 | || TREE_CODE (TYPE_SIZE (type)) != INTEGER_CST) |
---|
| 1196 | { |
---|
| 1197 | /* If the type is just a cross reference, output one |
---|
| 1198 | and mark the type as partially described. |
---|
| 1199 | If it later becomes defined, we will output |
---|
| 1200 | its real definition. |
---|
| 1201 | If the type has a name, don't nest its definition within |
---|
| 1202 | another type's definition; instead, output an xref |
---|
| 1203 | and let the definition come when the name is defined. */ |
---|
| 1204 | fprintf (asmfile, (TREE_CODE (type) == RECORD_TYPE) ? "xs" : "xu"); |
---|
| 1205 | CHARS (3); |
---|
| 1206 | #if 0 /* This assertion is legitimately false in C++. */ |
---|
| 1207 | /* We shouldn't be outputting a reference to a type before its |
---|
| 1208 | definition unless the type has a tag name. |
---|
| 1209 | A typedef name without a tag name should be impossible. */ |
---|
| 1210 | if (TREE_CODE (TYPE_NAME (type)) != IDENTIFIER_NODE) |
---|
| 1211 | abort (); |
---|
| 1212 | #endif |
---|
| 1213 | if (TYPE_NAME (type) != 0) |
---|
| 1214 | dbxout_type_name (type); |
---|
| 1215 | else |
---|
| 1216 | fprintf (asmfile, "$$%d", anonymous_type_number++); |
---|
| 1217 | fprintf (asmfile, ":"); |
---|
| 1218 | typevec[TYPE_SYMTAB_ADDRESS (type)] = TYPE_XREF; |
---|
| 1219 | break; |
---|
| 1220 | } |
---|
| 1221 | |
---|
| 1222 | /* Identify record or union, and print its size. */ |
---|
| 1223 | fprintf (asmfile, (TREE_CODE (type) == RECORD_TYPE) ? "s%d" : "u%d", |
---|
| 1224 | int_size_in_bytes (type)); |
---|
| 1225 | |
---|
| 1226 | if (use_gnu_debug_info_extensions) |
---|
| 1227 | { |
---|
| 1228 | if (n_baseclasses) |
---|
| 1229 | { |
---|
| 1230 | have_used_extensions = 1; |
---|
| 1231 | fprintf (asmfile, "!%d,", n_baseclasses); |
---|
| 1232 | CHARS (8); |
---|
| 1233 | } |
---|
| 1234 | } |
---|
| 1235 | for (i = 0; i < n_baseclasses; i++) |
---|
| 1236 | { |
---|
| 1237 | tree child = TREE_VEC_ELT (BINFO_BASETYPES (TYPE_BINFO (type)), i); |
---|
| 1238 | if (use_gnu_debug_info_extensions) |
---|
| 1239 | { |
---|
| 1240 | have_used_extensions = 1; |
---|
| 1241 | putc (TREE_VIA_VIRTUAL (child) ? '1' |
---|
| 1242 | : '0', |
---|
| 1243 | asmfile); |
---|
| 1244 | putc (TREE_VIA_PUBLIC (child) ? '2' |
---|
| 1245 | : '0', |
---|
| 1246 | asmfile); |
---|
| 1247 | fprintf (asmfile, "%d,", |
---|
| 1248 | TREE_INT_CST_LOW (BINFO_OFFSET (child)) * BITS_PER_UNIT); |
---|
| 1249 | CHARS (15); |
---|
| 1250 | dbxout_type (BINFO_TYPE (child), 0, 0); |
---|
| 1251 | putc (';', asmfile); |
---|
| 1252 | } |
---|
| 1253 | else |
---|
| 1254 | { |
---|
| 1255 | /* Print out the base class information with fields |
---|
| 1256 | which have the same names at the types they hold. */ |
---|
| 1257 | dbxout_type_name (BINFO_TYPE (child)); |
---|
| 1258 | putc (':', asmfile); |
---|
| 1259 | dbxout_type (BINFO_TYPE (child), full, 0); |
---|
| 1260 | fprintf (asmfile, ",%d,%d;", |
---|
| 1261 | TREE_INT_CST_LOW (BINFO_OFFSET (child)) * BITS_PER_UNIT, |
---|
| 1262 | TREE_INT_CST_LOW (DECL_SIZE (TYPE_NAME (BINFO_TYPE (child)))) * BITS_PER_UNIT); |
---|
| 1263 | CHARS (20); |
---|
| 1264 | } |
---|
| 1265 | } |
---|
| 1266 | } |
---|
| 1267 | |
---|
| 1268 | CHARS (11); |
---|
| 1269 | |
---|
| 1270 | /* Write out the field declarations. */ |
---|
| 1271 | dbxout_type_fields (type); |
---|
| 1272 | if (use_gnu_debug_info_extensions && TYPE_METHODS (type) != NULL_TREE) |
---|
| 1273 | { |
---|
| 1274 | have_used_extensions = 1; |
---|
| 1275 | dbxout_type_methods (type); |
---|
| 1276 | } |
---|
| 1277 | putc (';', asmfile); |
---|
| 1278 | |
---|
| 1279 | if (use_gnu_debug_info_extensions && TREE_CODE (type) == RECORD_TYPE |
---|
| 1280 | /* Avoid the ~ if we don't really need it--it confuses dbx. */ |
---|
| 1281 | && TYPE_VFIELD (type)) |
---|
| 1282 | { |
---|
| 1283 | have_used_extensions = 1; |
---|
| 1284 | |
---|
| 1285 | /* Tell GDB+ that it may keep reading. */ |
---|
| 1286 | putc ('~', asmfile); |
---|
| 1287 | |
---|
| 1288 | /* We need to write out info about what field this class |
---|
| 1289 | uses as its "main" vtable pointer field, because if this |
---|
| 1290 | field is inherited from a base class, GDB cannot necessarily |
---|
| 1291 | figure out which field it's using in time. */ |
---|
| 1292 | if (TYPE_VFIELD (type)) |
---|
| 1293 | { |
---|
| 1294 | putc ('%', asmfile); |
---|
| 1295 | dbxout_type (DECL_FCONTEXT (TYPE_VFIELD (type)), 0, 0); |
---|
| 1296 | } |
---|
| 1297 | putc (';', asmfile); |
---|
| 1298 | CHARS (3); |
---|
| 1299 | } |
---|
| 1300 | break; |
---|
| 1301 | |
---|
| 1302 | case ENUMERAL_TYPE: |
---|
| 1303 | /* We must use the same test here as we use in the DBX_NO_XREFS case |
---|
| 1304 | above. We simplify it a bit since an enum will never have a variable |
---|
| 1305 | size. */ |
---|
| 1306 | if ((TYPE_NAME (type) != 0 |
---|
| 1307 | && ! (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
---|
| 1308 | && DECL_IGNORED_P (TYPE_NAME (type))) |
---|
| 1309 | && !full) |
---|
| 1310 | || TYPE_SIZE (type) == 0) |
---|
| 1311 | { |
---|
| 1312 | fprintf (asmfile, "xe"); |
---|
| 1313 | CHARS (3); |
---|
| 1314 | dbxout_type_name (type); |
---|
| 1315 | typevec[TYPE_SYMTAB_ADDRESS (type)] = TYPE_XREF; |
---|
| 1316 | fprintf (asmfile, ":"); |
---|
| 1317 | return; |
---|
| 1318 | } |
---|
| 1319 | #ifdef DBX_OUTPUT_ENUM |
---|
| 1320 | DBX_OUTPUT_ENUM (asmfile, type); |
---|
| 1321 | #else |
---|
| 1322 | if (use_gnu_debug_info_extensions |
---|
| 1323 | && TYPE_PRECISION (type) != TYPE_PRECISION (integer_type_node)) |
---|
| 1324 | fprintf (asmfile, "@s%d;", TYPE_PRECISION (type)); |
---|
| 1325 | putc ('e', asmfile); |
---|
| 1326 | CHARS (1); |
---|
| 1327 | for (tem = TYPE_VALUES (type); tem; tem = TREE_CHAIN (tem)) |
---|
| 1328 | { |
---|
| 1329 | fprintf (asmfile, "%s:", IDENTIFIER_POINTER (TREE_PURPOSE (tem))); |
---|
| 1330 | if (TREE_INT_CST_HIGH (TREE_VALUE (tem)) == 0) |
---|
| 1331 | fprintf (asmfile, "%lu", |
---|
| 1332 | (unsigned long) TREE_INT_CST_LOW (TREE_VALUE (tem))); |
---|
| 1333 | else if (TREE_INT_CST_HIGH (TREE_VALUE (tem)) == -1 |
---|
| 1334 | && TREE_INT_CST_LOW (TREE_VALUE (tem)) < 0) |
---|
| 1335 | fprintf (asmfile, "%ld", |
---|
| 1336 | (long) TREE_INT_CST_LOW (TREE_VALUE (tem))); |
---|
| 1337 | else |
---|
| 1338 | print_int_cst_octal (TREE_VALUE (tem)); |
---|
| 1339 | fprintf (asmfile, ","); |
---|
| 1340 | CHARS (20 + IDENTIFIER_LENGTH (TREE_PURPOSE (tem))); |
---|
| 1341 | if (TREE_CHAIN (tem) != 0) |
---|
| 1342 | CONTIN; |
---|
| 1343 | } |
---|
| 1344 | putc (';', asmfile); |
---|
| 1345 | CHARS (1); |
---|
| 1346 | #endif |
---|
| 1347 | break; |
---|
| 1348 | |
---|
| 1349 | case POINTER_TYPE: |
---|
| 1350 | putc ('*', asmfile); |
---|
| 1351 | CHARS (1); |
---|
| 1352 | dbxout_type (TREE_TYPE (type), 0, 0); |
---|
| 1353 | break; |
---|
| 1354 | |
---|
| 1355 | case METHOD_TYPE: |
---|
| 1356 | if (use_gnu_debug_info_extensions) |
---|
| 1357 | { |
---|
| 1358 | have_used_extensions = 1; |
---|
| 1359 | putc ('#', asmfile); |
---|
| 1360 | CHARS (1); |
---|
| 1361 | if (flag_minimal_debug && !show_arg_types) |
---|
| 1362 | { |
---|
| 1363 | /* Normally, just output the return type. |
---|
| 1364 | The argument types are encoded in the method name. */ |
---|
| 1365 | putc ('#', asmfile); |
---|
| 1366 | dbxout_type (TREE_TYPE (type), 0, 0); |
---|
| 1367 | putc (';', asmfile); |
---|
| 1368 | CHARS (1); |
---|
| 1369 | } |
---|
| 1370 | else |
---|
| 1371 | { |
---|
| 1372 | /* When outputting destructors, we need to write |
---|
| 1373 | the argument types out longhand. */ |
---|
| 1374 | dbxout_type (TYPE_METHOD_BASETYPE (type), 0, 0); |
---|
| 1375 | putc (',', asmfile); |
---|
| 1376 | CHARS (1); |
---|
| 1377 | dbxout_type (TREE_TYPE (type), 0, 0); |
---|
| 1378 | dbxout_args (TYPE_ARG_TYPES (type)); |
---|
| 1379 | putc (';', asmfile); |
---|
| 1380 | CHARS (1); |
---|
| 1381 | } |
---|
| 1382 | } |
---|
| 1383 | else |
---|
| 1384 | { |
---|
| 1385 | /* Treat it as a function type. */ |
---|
| 1386 | dbxout_type (TREE_TYPE (type), 0, 0); |
---|
| 1387 | } |
---|
| 1388 | break; |
---|
| 1389 | |
---|
| 1390 | case OFFSET_TYPE: |
---|
| 1391 | if (use_gnu_debug_info_extensions) |
---|
| 1392 | { |
---|
| 1393 | have_used_extensions = 1; |
---|
| 1394 | putc ('@', asmfile); |
---|
| 1395 | CHARS (1); |
---|
| 1396 | dbxout_type (TYPE_OFFSET_BASETYPE (type), 0, 0); |
---|
| 1397 | putc (',', asmfile); |
---|
| 1398 | CHARS (1); |
---|
| 1399 | dbxout_type (TREE_TYPE (type), 0, 0); |
---|
| 1400 | } |
---|
| 1401 | else |
---|
| 1402 | { |
---|
| 1403 | /* Should print as an int, because it is really |
---|
| 1404 | just an offset. */ |
---|
| 1405 | dbxout_type (integer_type_node, 0, 0); |
---|
| 1406 | } |
---|
| 1407 | break; |
---|
| 1408 | |
---|
| 1409 | case REFERENCE_TYPE: |
---|
| 1410 | if (use_gnu_debug_info_extensions) |
---|
| 1411 | have_used_extensions = 1; |
---|
| 1412 | putc (use_gnu_debug_info_extensions ? '&' : '*', asmfile); |
---|
| 1413 | CHARS (1); |
---|
| 1414 | dbxout_type (TREE_TYPE (type), 0, 0); |
---|
| 1415 | break; |
---|
| 1416 | |
---|
| 1417 | case FUNCTION_TYPE: |
---|
| 1418 | putc ('f', asmfile); |
---|
| 1419 | CHARS (1); |
---|
| 1420 | dbxout_type (TREE_TYPE (type), 0, 0); |
---|
| 1421 | break; |
---|
| 1422 | |
---|
| 1423 | default: |
---|
| 1424 | abort (); |
---|
| 1425 | } |
---|
| 1426 | } |
---|
| 1427 | |
---|
| 1428 | /* Print the value of integer constant C, in octal, |
---|
| 1429 | handling double precision. */ |
---|
| 1430 | |
---|
| 1431 | static void |
---|
| 1432 | print_int_cst_octal (c) |
---|
| 1433 | tree c; |
---|
| 1434 | { |
---|
| 1435 | unsigned HOST_WIDE_INT high = TREE_INT_CST_HIGH (c); |
---|
| 1436 | unsigned HOST_WIDE_INT low = TREE_INT_CST_LOW (c); |
---|
| 1437 | int excess = (3 - (HOST_BITS_PER_WIDE_INT % 3)); |
---|
| 1438 | int width = TYPE_PRECISION (TREE_TYPE (c)); |
---|
| 1439 | |
---|
| 1440 | /* GDB wants constants with no extra leading "1" bits, so |
---|
| 1441 | we need to remove any sign-extension that might be |
---|
| 1442 | present. */ |
---|
| 1443 | if (width == HOST_BITS_PER_WIDE_INT * 2) |
---|
| 1444 | ; |
---|
| 1445 | else if (width > HOST_BITS_PER_WIDE_INT) |
---|
| 1446 | high &= (((HOST_WIDE_INT) 1 << (width - HOST_BITS_PER_WIDE_INT)) - 1); |
---|
| 1447 | else if (width == HOST_BITS_PER_WIDE_INT) |
---|
| 1448 | high = 0; |
---|
| 1449 | else |
---|
| 1450 | high = 0, low &= (((HOST_WIDE_INT) 1 << width) - 1); |
---|
| 1451 | |
---|
| 1452 | fprintf (asmfile, "0"); |
---|
| 1453 | |
---|
| 1454 | if (excess == 3) |
---|
| 1455 | { |
---|
| 1456 | print_octal (high, HOST_BITS_PER_WIDE_INT / 3); |
---|
| 1457 | print_octal (low, HOST_BITS_PER_WIDE_INT / 3); |
---|
| 1458 | } |
---|
| 1459 | else |
---|
| 1460 | { |
---|
| 1461 | unsigned HOST_WIDE_INT beg = high >> excess; |
---|
| 1462 | unsigned HOST_WIDE_INT middle |
---|
| 1463 | = ((high & (((HOST_WIDE_INT) 1 << excess) - 1)) << (3 - excess) |
---|
| 1464 | | (low >> (HOST_BITS_PER_WIDE_INT / 3 * 3))); |
---|
| 1465 | unsigned HOST_WIDE_INT end |
---|
| 1466 | = low & (((unsigned HOST_WIDE_INT) 1 |
---|
| 1467 | << (HOST_BITS_PER_WIDE_INT / 3 * 3)) |
---|
| 1468 | - 1); |
---|
| 1469 | |
---|
| 1470 | fprintf (asmfile, "%o%01o", beg, middle); |
---|
| 1471 | print_octal (end, HOST_BITS_PER_WIDE_INT / 3); |
---|
| 1472 | } |
---|
| 1473 | } |
---|
| 1474 | |
---|
| 1475 | static void |
---|
| 1476 | print_octal (value, digits) |
---|
| 1477 | unsigned HOST_WIDE_INT value; |
---|
| 1478 | int digits; |
---|
| 1479 | { |
---|
| 1480 | int i; |
---|
| 1481 | |
---|
| 1482 | for (i = digits - 1; i >= 0; i--) |
---|
| 1483 | fprintf (asmfile, "%01o", ((value >> (3 * i)) & 7)); |
---|
| 1484 | } |
---|
| 1485 | |
---|
| 1486 | /* Output the name of type TYPE, with no punctuation. |
---|
| 1487 | Such names can be set up either by typedef declarations |
---|
| 1488 | or by struct, enum and union tags. */ |
---|
| 1489 | |
---|
| 1490 | static void |
---|
| 1491 | dbxout_type_name (type) |
---|
| 1492 | register tree type; |
---|
| 1493 | { |
---|
| 1494 | tree t; |
---|
| 1495 | if (TYPE_NAME (type) == 0) |
---|
| 1496 | abort (); |
---|
| 1497 | if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE) |
---|
| 1498 | { |
---|
| 1499 | t = TYPE_NAME (type); |
---|
| 1500 | } |
---|
| 1501 | else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL) |
---|
| 1502 | { |
---|
| 1503 | t = DECL_NAME (TYPE_NAME (type)); |
---|
| 1504 | } |
---|
| 1505 | else |
---|
| 1506 | abort (); |
---|
| 1507 | |
---|
| 1508 | fprintf (asmfile, "%s", IDENTIFIER_POINTER (t)); |
---|
| 1509 | CHARS (IDENTIFIER_LENGTH (t)); |
---|
| 1510 | } |
---|
| 1511 | |
---|
| 1512 | /* Output a .stabs for the symbol defined by DECL, |
---|
| 1513 | which must be a ..._DECL node in the normal namespace. |
---|
| 1514 | It may be a CONST_DECL, a FUNCTION_DECL, a PARM_DECL or a VAR_DECL. |
---|
| 1515 | LOCAL is nonzero if the scope is less than the entire file. */ |
---|
| 1516 | |
---|
| 1517 | void |
---|
| 1518 | dbxout_symbol (decl, local) |
---|
| 1519 | tree decl; |
---|
| 1520 | int local; |
---|
| 1521 | { |
---|
| 1522 | tree type = TREE_TYPE (decl); |
---|
| 1523 | tree context = NULL_TREE; |
---|
| 1524 | |
---|
| 1525 | /* Cast avoids warning in old compilers. */ |
---|
| 1526 | current_sym_code = (STAB_CODE_TYPE) 0; |
---|
| 1527 | current_sym_value = 0; |
---|
| 1528 | current_sym_addr = 0; |
---|
| 1529 | |
---|
| 1530 | /* Ignore nameless syms, but don't ignore type tags. */ |
---|
| 1531 | |
---|
| 1532 | if ((DECL_NAME (decl) == 0 && TREE_CODE (decl) != TYPE_DECL) |
---|
| 1533 | || DECL_IGNORED_P (decl)) |
---|
| 1534 | return; |
---|
| 1535 | |
---|
| 1536 | dbxout_prepare_symbol (decl); |
---|
| 1537 | |
---|
| 1538 | /* The output will always start with the symbol name, |
---|
| 1539 | so always count that in the length-output-so-far. */ |
---|
| 1540 | |
---|
| 1541 | if (DECL_NAME (decl) != 0) |
---|
| 1542 | current_sym_nchars = 2 + IDENTIFIER_LENGTH (DECL_NAME (decl)); |
---|
| 1543 | |
---|
| 1544 | switch (TREE_CODE (decl)) |
---|
| 1545 | { |
---|
| 1546 | case CONST_DECL: |
---|
| 1547 | /* Enum values are defined by defining the enum type. */ |
---|
| 1548 | break; |
---|
| 1549 | |
---|
| 1550 | case FUNCTION_DECL: |
---|
| 1551 | if (DECL_RTL (decl) == 0) |
---|
| 1552 | return; |
---|
| 1553 | if (DECL_EXTERNAL (decl)) |
---|
| 1554 | break; |
---|
| 1555 | /* Don't mention a nested function under its parent. */ |
---|
| 1556 | context = decl_function_context (decl); |
---|
| 1557 | if (context == current_function_decl) |
---|
| 1558 | break; |
---|
| 1559 | if (GET_CODE (DECL_RTL (decl)) != MEM |
---|
| 1560 | || GET_CODE (XEXP (DECL_RTL (decl), 0)) != SYMBOL_REF) |
---|
| 1561 | break; |
---|
| 1562 | FORCE_TEXT; |
---|
| 1563 | |
---|
| 1564 | fprintf (asmfile, "%s \"%s:%c", ASM_STABS_OP, |
---|
| 1565 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)), |
---|
| 1566 | TREE_PUBLIC (decl) ? 'F' : 'f'); |
---|
| 1567 | |
---|
| 1568 | current_sym_code = N_FUN; |
---|
| 1569 | current_sym_addr = XEXP (DECL_RTL (decl), 0); |
---|
| 1570 | |
---|
| 1571 | if (TREE_TYPE (type)) |
---|
| 1572 | dbxout_type (TREE_TYPE (type), 0, 0); |
---|
| 1573 | else |
---|
| 1574 | dbxout_type (void_type_node, 0, 0); |
---|
| 1575 | |
---|
| 1576 | /* For a nested function, when that function is compiled, |
---|
| 1577 | mention the containing function name |
---|
| 1578 | as well as (since dbx wants it) our own assembler-name. */ |
---|
| 1579 | if (context != 0) |
---|
| 1580 | fprintf (asmfile, ",%s,%s", |
---|
| 1581 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)), |
---|
| 1582 | IDENTIFIER_POINTER (DECL_NAME (context))); |
---|
| 1583 | |
---|
| 1584 | dbxout_finish_symbol (decl); |
---|
| 1585 | break; |
---|
| 1586 | |
---|
| 1587 | case TYPE_DECL: |
---|
| 1588 | #if 0 |
---|
| 1589 | /* This seems all wrong. Outputting most kinds of types gives no name |
---|
| 1590 | at all. A true definition gives no name; a cross-ref for a |
---|
| 1591 | structure can give the tag name, but not a type name. |
---|
| 1592 | It seems that no typedef name is defined by outputting a type. */ |
---|
| 1593 | |
---|
| 1594 | /* If this typedef name was defined by outputting the type, |
---|
| 1595 | don't duplicate it. */ |
---|
| 1596 | if (typevec[TYPE_SYMTAB_ADDRESS (type)] == TYPE_DEFINED |
---|
| 1597 | && TYPE_NAME (TREE_TYPE (decl)) == decl) |
---|
| 1598 | return; |
---|
| 1599 | #endif |
---|
| 1600 | /* Don't output the same typedef twice. |
---|
| 1601 | And don't output what language-specific stuff doesn't want output. */ |
---|
| 1602 | if (TREE_ASM_WRITTEN (decl) || TYPE_DECL_SUPPRESS_DEBUG (decl)) |
---|
| 1603 | return; |
---|
| 1604 | |
---|
| 1605 | FORCE_TEXT; |
---|
| 1606 | |
---|
| 1607 | { |
---|
| 1608 | int tag_needed = 1; |
---|
| 1609 | int did_output = 0; |
---|
| 1610 | |
---|
| 1611 | if (DECL_NAME (decl)) |
---|
| 1612 | { |
---|
| 1613 | /* Nonzero means we must output a tag as well as a typedef. */ |
---|
| 1614 | tag_needed = 0; |
---|
| 1615 | |
---|
| 1616 | /* Handle the case of a C++ structure or union |
---|
| 1617 | where the TYPE_NAME is a TYPE_DECL |
---|
| 1618 | which gives both a typedef name and a tag. */ |
---|
| 1619 | /* dbx requires the tag first and the typedef second. */ |
---|
| 1620 | if ((TREE_CODE (type) == RECORD_TYPE |
---|
| 1621 | || TREE_CODE (type) == UNION_TYPE |
---|
| 1622 | || TREE_CODE (type) == QUAL_UNION_TYPE) |
---|
| 1623 | && TYPE_NAME (type) == decl |
---|
| 1624 | && !(use_gnu_debug_info_extensions && have_used_extensions) |
---|
| 1625 | && !TREE_ASM_WRITTEN (TYPE_NAME (type)) |
---|
| 1626 | /* Distinguish the implicit typedefs of C++ |
---|
| 1627 | from explicit ones that might be found in C. */ |
---|
| 1628 | && (!strcmp (lang_identify (), "cplusplus") |
---|
| 1629 | /* The following line maybe unnecessary; |
---|
| 1630 | in 2.6, try removing it. */ |
---|
| 1631 | || DECL_SOURCE_LINE (decl) == 0)) |
---|
| 1632 | { |
---|
| 1633 | tree name = TYPE_NAME (type); |
---|
| 1634 | if (TREE_CODE (name) == TYPE_DECL) |
---|
| 1635 | name = DECL_NAME (name); |
---|
| 1636 | |
---|
| 1637 | current_sym_code = DBX_TYPE_DECL_STABS_CODE; |
---|
| 1638 | current_sym_value = 0; |
---|
| 1639 | current_sym_addr = 0; |
---|
| 1640 | current_sym_nchars = 2 + IDENTIFIER_LENGTH (name); |
---|
| 1641 | |
---|
| 1642 | fprintf (asmfile, "%s \"%s:T", ASM_STABS_OP, |
---|
| 1643 | IDENTIFIER_POINTER (name)); |
---|
| 1644 | dbxout_type (type, 1, 0); |
---|
| 1645 | dbxout_finish_symbol (NULL_TREE); |
---|
| 1646 | } |
---|
| 1647 | |
---|
| 1648 | /* Output typedef name. */ |
---|
| 1649 | fprintf (asmfile, "%s \"%s:", ASM_STABS_OP, |
---|
| 1650 | IDENTIFIER_POINTER (DECL_NAME (decl))); |
---|
| 1651 | |
---|
| 1652 | /* Short cut way to output a tag also. */ |
---|
| 1653 | if ((TREE_CODE (type) == RECORD_TYPE |
---|
| 1654 | || TREE_CODE (type) == UNION_TYPE |
---|
| 1655 | || TREE_CODE (type) == QUAL_UNION_TYPE) |
---|
| 1656 | && TYPE_NAME (type) == decl) |
---|
| 1657 | { |
---|
| 1658 | if (use_gnu_debug_info_extensions && have_used_extensions) |
---|
| 1659 | { |
---|
| 1660 | putc ('T', asmfile); |
---|
| 1661 | TREE_ASM_WRITTEN (TYPE_NAME (type)) = 1; |
---|
| 1662 | } |
---|
| 1663 | #if 0 /* Now we generate the tag for this case up above. */ |
---|
| 1664 | else |
---|
| 1665 | tag_needed = 1; |
---|
| 1666 | #endif |
---|
| 1667 | } |
---|
| 1668 | |
---|
| 1669 | putc ('t', asmfile); |
---|
| 1670 | current_sym_code = DBX_TYPE_DECL_STABS_CODE; |
---|
| 1671 | |
---|
| 1672 | dbxout_type (type, 1, 0); |
---|
| 1673 | dbxout_finish_symbol (decl); |
---|
| 1674 | did_output = 1; |
---|
| 1675 | } |
---|
| 1676 | |
---|
| 1677 | /* Don't output a tag if this is an incomplete type (TYPE_SIZE is |
---|
| 1678 | zero). This prevents the sun4 Sun OS 4.x dbx from crashing. */ |
---|
| 1679 | |
---|
| 1680 | if (tag_needed && TYPE_NAME (type) != 0 |
---|
| 1681 | && (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE |
---|
| 1682 | || (DECL_NAME (TYPE_NAME (type)) != 0)) |
---|
| 1683 | && TYPE_SIZE (type) != 0 |
---|
| 1684 | && !TREE_ASM_WRITTEN (TYPE_NAME (type))) |
---|
| 1685 | { |
---|
| 1686 | /* For a TYPE_DECL with no name, but the type has a name, |
---|
| 1687 | output a tag. |
---|
| 1688 | This is what represents `struct foo' with no typedef. */ |
---|
| 1689 | /* In C++, the name of a type is the corresponding typedef. |
---|
| 1690 | In C, it is an IDENTIFIER_NODE. */ |
---|
| 1691 | tree name = TYPE_NAME (type); |
---|
| 1692 | if (TREE_CODE (name) == TYPE_DECL) |
---|
| 1693 | name = DECL_NAME (name); |
---|
| 1694 | |
---|
| 1695 | current_sym_code = DBX_TYPE_DECL_STABS_CODE; |
---|
| 1696 | current_sym_value = 0; |
---|
| 1697 | current_sym_addr = 0; |
---|
| 1698 | current_sym_nchars = 2 + IDENTIFIER_LENGTH (name); |
---|
| 1699 | |
---|
| 1700 | fprintf (asmfile, "%s \"%s:T", ASM_STABS_OP, |
---|
| 1701 | IDENTIFIER_POINTER (name)); |
---|
| 1702 | dbxout_type (type, 1, 0); |
---|
| 1703 | dbxout_finish_symbol (NULL_TREE); |
---|
| 1704 | did_output = 1; |
---|
| 1705 | } |
---|
| 1706 | |
---|
| 1707 | /* If an enum type has no name, it cannot be referred to, |
---|
| 1708 | but we must output it anyway, since the enumeration constants |
---|
| 1709 | can be referred to. */ |
---|
| 1710 | if (!did_output && TREE_CODE (type) == ENUMERAL_TYPE) |
---|
| 1711 | { |
---|
| 1712 | current_sym_code = DBX_TYPE_DECL_STABS_CODE; |
---|
| 1713 | current_sym_value = 0; |
---|
| 1714 | current_sym_addr = 0; |
---|
| 1715 | current_sym_nchars = 2; |
---|
| 1716 | |
---|
| 1717 | /* Some debuggers fail when given NULL names, so give this a |
---|
| 1718 | harmless name of ` '. */ |
---|
| 1719 | fprintf (asmfile, "%s \" :T", ASM_STABS_OP); |
---|
| 1720 | dbxout_type (type, 1, 0); |
---|
| 1721 | dbxout_finish_symbol (NULL_TREE); |
---|
| 1722 | } |
---|
| 1723 | |
---|
| 1724 | /* Prevent duplicate output of a typedef. */ |
---|
| 1725 | TREE_ASM_WRITTEN (decl) = 1; |
---|
| 1726 | break; |
---|
| 1727 | } |
---|
| 1728 | |
---|
| 1729 | case PARM_DECL: |
---|
| 1730 | /* Parm decls go in their own separate chains |
---|
| 1731 | and are output by dbxout_reg_parms and dbxout_parms. */ |
---|
| 1732 | abort (); |
---|
| 1733 | |
---|
| 1734 | case RESULT_DECL: |
---|
| 1735 | /* Named return value, treat like a VAR_DECL. */ |
---|
| 1736 | case VAR_DECL: |
---|
| 1737 | if (DECL_RTL (decl) == 0) |
---|
| 1738 | return; |
---|
| 1739 | /* Don't mention a variable that is external. |
---|
| 1740 | Let the file that defines it describe it. */ |
---|
| 1741 | if (DECL_EXTERNAL (decl)) |
---|
| 1742 | break; |
---|
| 1743 | |
---|
| 1744 | /* If the variable is really a constant |
---|
| 1745 | and not written in memory, inform the debugger. */ |
---|
| 1746 | if (TREE_STATIC (decl) && TREE_READONLY (decl) |
---|
| 1747 | && DECL_INITIAL (decl) != 0 |
---|
| 1748 | && ! TREE_ASM_WRITTEN (decl) |
---|
| 1749 | && (DECL_FIELD_CONTEXT (decl) == NULL_TREE |
---|
| 1750 | || TREE_CODE (DECL_FIELD_CONTEXT (decl)) == BLOCK)) |
---|
| 1751 | { |
---|
| 1752 | if (TREE_PUBLIC (decl) == 0) |
---|
| 1753 | { |
---|
| 1754 | /* The sun4 assembler does not grok this. */ |
---|
| 1755 | char *name = IDENTIFIER_POINTER (DECL_NAME (decl)); |
---|
| 1756 | if (TREE_CODE (TREE_TYPE (decl)) == INTEGER_TYPE |
---|
| 1757 | || TREE_CODE (TREE_TYPE (decl)) == ENUMERAL_TYPE) |
---|
| 1758 | { |
---|
| 1759 | HOST_WIDE_INT ival = TREE_INT_CST_LOW (DECL_INITIAL (decl)); |
---|
| 1760 | #ifdef DBX_OUTPUT_CONSTANT_SYMBOL |
---|
| 1761 | DBX_OUTPUT_CONSTANT_SYMBOL (asmfile, name, ival); |
---|
| 1762 | #else |
---|
| 1763 | fprintf (asmfile, "%s \"%s:c=i%d\",0x%x,0,0,0\n", |
---|
| 1764 | ASM_STABS_OP, name, ival, N_LSYM); |
---|
| 1765 | #endif |
---|
| 1766 | return; |
---|
| 1767 | } |
---|
| 1768 | else if (TREE_CODE (TREE_TYPE (decl)) == REAL_TYPE) |
---|
| 1769 | { |
---|
| 1770 | /* don't know how to do this yet. */ |
---|
| 1771 | } |
---|
| 1772 | break; |
---|
| 1773 | } |
---|
| 1774 | /* else it is something we handle like a normal variable. */ |
---|
| 1775 | } |
---|
| 1776 | |
---|
| 1777 | DECL_RTL (decl) = eliminate_regs (DECL_RTL (decl), 0, NULL_RTX); |
---|
| 1778 | #ifdef LEAF_REG_REMAP |
---|
| 1779 | if (leaf_function) |
---|
| 1780 | leaf_renumber_regs_insn (DECL_RTL (decl)); |
---|
| 1781 | #endif |
---|
| 1782 | |
---|
| 1783 | dbxout_symbol_location (decl, type, 0, DECL_RTL (decl)); |
---|
| 1784 | } |
---|
| 1785 | } |
---|
| 1786 | |
---|
| 1787 | /* Output the stab for DECL, a VAR_DECL, RESULT_DECL or PARM_DECL. |
---|
| 1788 | Add SUFFIX to its name, if SUFFIX is not 0. |
---|
| 1789 | Describe the variable as residing in HOME |
---|
| 1790 | (usually HOME is DECL_RTL (DECL), but not always). */ |
---|
| 1791 | |
---|
| 1792 | static void |
---|
| 1793 | dbxout_symbol_location (decl, type, suffix, home) |
---|
| 1794 | tree decl, type; |
---|
| 1795 | char *suffix; |
---|
| 1796 | rtx home; |
---|
| 1797 | { |
---|
| 1798 | int letter = 0; |
---|
| 1799 | int regno = -1; |
---|
| 1800 | |
---|
| 1801 | /* Don't mention a variable at all |
---|
| 1802 | if it was completely optimized into nothingness. |
---|
| 1803 | |
---|
| 1804 | If the decl was from an inline function, then it's rtl |
---|
| 1805 | is not identically the rtl that was used in this |
---|
| 1806 | particular compilation. */ |
---|
| 1807 | if (GET_CODE (home) == REG) |
---|
| 1808 | { |
---|
| 1809 | regno = REGNO (home); |
---|
| 1810 | if (regno >= FIRST_PSEUDO_REGISTER) |
---|
| 1811 | return; |
---|
| 1812 | } |
---|
| 1813 | else if (GET_CODE (home) == SUBREG) |
---|
| 1814 | { |
---|
| 1815 | rtx value = home; |
---|
| 1816 | int offset = 0; |
---|
| 1817 | while (GET_CODE (value) == SUBREG) |
---|
| 1818 | { |
---|
| 1819 | offset += SUBREG_WORD (value); |
---|
| 1820 | value = SUBREG_REG (value); |
---|
| 1821 | } |
---|
| 1822 | if (GET_CODE (value) == REG) |
---|
| 1823 | { |
---|
| 1824 | regno = REGNO (value); |
---|
| 1825 | if (regno >= FIRST_PSEUDO_REGISTER) |
---|
| 1826 | return; |
---|
| 1827 | regno += offset; |
---|
| 1828 | } |
---|
| 1829 | alter_subreg (home); |
---|
| 1830 | } |
---|
| 1831 | |
---|
| 1832 | /* The kind-of-variable letter depends on where |
---|
| 1833 | the variable is and on the scope of its name: |
---|
| 1834 | G and N_GSYM for static storage and global scope, |
---|
| 1835 | S for static storage and file scope, |
---|
| 1836 | V for static storage and local scope, |
---|
| 1837 | for those two, use N_LCSYM if data is in bss segment, |
---|
| 1838 | N_STSYM if in data segment, N_FUN otherwise. |
---|
| 1839 | (We used N_FUN originally, then changed to N_STSYM |
---|
| 1840 | to please GDB. However, it seems that confused ld. |
---|
| 1841 | Now GDB has been fixed to like N_FUN, says Kingdon.) |
---|
| 1842 | no letter at all, and N_LSYM, for auto variable, |
---|
| 1843 | r and N_RSYM for register variable. */ |
---|
| 1844 | |
---|
| 1845 | if (GET_CODE (home) == MEM |
---|
| 1846 | && GET_CODE (XEXP (home, 0)) == SYMBOL_REF) |
---|
| 1847 | { |
---|
| 1848 | if (TREE_PUBLIC (decl)) |
---|
| 1849 | { |
---|
| 1850 | letter = 'G'; |
---|
| 1851 | current_sym_code = N_GSYM; |
---|
| 1852 | } |
---|
| 1853 | else |
---|
| 1854 | { |
---|
| 1855 | current_sym_addr = XEXP (home, 0); |
---|
| 1856 | |
---|
| 1857 | letter = decl_function_context (decl) ? 'V' : 'S'; |
---|
| 1858 | |
---|
| 1859 | /* This should be the same condition as in assemble_variable, but |
---|
| 1860 | we don't have access to dont_output_data here. So, instead, |
---|
| 1861 | we rely on the fact that error_mark_node initializers always |
---|
| 1862 | end up in bss for C++ and never end up in bss for C. */ |
---|
| 1863 | if (DECL_INITIAL (decl) == 0 |
---|
| 1864 | || (!strcmp (lang_identify (), "cplusplus") |
---|
| 1865 | && DECL_INITIAL (decl) == error_mark_node)) |
---|
| 1866 | current_sym_code = N_LCSYM; |
---|
| 1867 | else if (DECL_IN_TEXT_SECTION (decl)) |
---|
| 1868 | /* This is not quite right, but it's the closest |
---|
| 1869 | of all the codes that Unix defines. */ |
---|
| 1870 | current_sym_code = DBX_STATIC_CONST_VAR_CODE; |
---|
| 1871 | else |
---|
| 1872 | { |
---|
| 1873 | /* Ultrix `as' seems to need this. */ |
---|
| 1874 | #ifdef DBX_STATIC_STAB_DATA_SECTION |
---|
| 1875 | data_section (); |
---|
| 1876 | #endif |
---|
| 1877 | current_sym_code = N_STSYM; |
---|
| 1878 | } |
---|
| 1879 | } |
---|
| 1880 | } |
---|
| 1881 | else if (regno >= 0) |
---|
| 1882 | { |
---|
| 1883 | letter = 'r'; |
---|
| 1884 | current_sym_code = N_RSYM; |
---|
| 1885 | current_sym_value = DBX_REGISTER_NUMBER (regno); |
---|
| 1886 | } |
---|
| 1887 | else if (GET_CODE (home) == MEM |
---|
| 1888 | && (GET_CODE (XEXP (home, 0)) == MEM |
---|
| 1889 | || (GET_CODE (XEXP (home, 0)) == REG |
---|
| 1890 | && REGNO (XEXP (home, 0)) != HARD_FRAME_POINTER_REGNUM))) |
---|
| 1891 | /* If the value is indirect by memory or by a register |
---|
| 1892 | that isn't the frame pointer |
---|
| 1893 | then it means the object is variable-sized and address through |
---|
| 1894 | that register or stack slot. DBX has no way to represent this |
---|
| 1895 | so all we can do is output the variable as a pointer. |
---|
| 1896 | If it's not a parameter, ignore it. |
---|
| 1897 | (VAR_DECLs like this can be made by integrate.c.) */ |
---|
| 1898 | { |
---|
| 1899 | if (GET_CODE (XEXP (home, 0)) == REG) |
---|
| 1900 | { |
---|
| 1901 | letter = 'r'; |
---|
| 1902 | current_sym_code = N_RSYM; |
---|
| 1903 | current_sym_value = DBX_REGISTER_NUMBER (REGNO (XEXP (home, 0))); |
---|
| 1904 | } |
---|
| 1905 | else |
---|
| 1906 | { |
---|
| 1907 | current_sym_code = N_LSYM; |
---|
| 1908 | /* RTL looks like (MEM (MEM (PLUS (REG...) (CONST_INT...)))). |
---|
| 1909 | We want the value of that CONST_INT. */ |
---|
| 1910 | current_sym_value |
---|
| 1911 | = DEBUGGER_AUTO_OFFSET (XEXP (XEXP (home, 0), 0)); |
---|
| 1912 | } |
---|
| 1913 | |
---|
| 1914 | /* Effectively do build_pointer_type, but don't cache this type, |
---|
| 1915 | since it might be temporary whereas the type it points to |
---|
| 1916 | might have been saved for inlining. */ |
---|
| 1917 | /* Don't use REFERENCE_TYPE because dbx can't handle that. */ |
---|
| 1918 | type = make_node (POINTER_TYPE); |
---|
| 1919 | TREE_TYPE (type) = TREE_TYPE (decl); |
---|
| 1920 | } |
---|
| 1921 | else if (GET_CODE (home) == MEM |
---|
| 1922 | && GET_CODE (XEXP (home, 0)) == REG) |
---|
| 1923 | { |
---|
| 1924 | current_sym_code = N_LSYM; |
---|
| 1925 | current_sym_value = DEBUGGER_AUTO_OFFSET (XEXP (home, 0)); |
---|
| 1926 | } |
---|
| 1927 | else if (GET_CODE (home) == MEM |
---|
| 1928 | && GET_CODE (XEXP (home, 0)) == PLUS |
---|
| 1929 | && GET_CODE (XEXP (XEXP (home, 0), 1)) == CONST_INT) |
---|
| 1930 | { |
---|
| 1931 | current_sym_code = N_LSYM; |
---|
| 1932 | /* RTL looks like (MEM (PLUS (REG...) (CONST_INT...))) |
---|
| 1933 | We want the value of that CONST_INT. */ |
---|
| 1934 | current_sym_value = DEBUGGER_AUTO_OFFSET (XEXP (home, 0)); |
---|
| 1935 | } |
---|
| 1936 | else if (GET_CODE (home) == MEM |
---|
| 1937 | && GET_CODE (XEXP (home, 0)) == CONST) |
---|
| 1938 | { |
---|
| 1939 | /* Handle an obscure case which can arise when optimizing and |
---|
| 1940 | when there are few available registers. (This is *always* |
---|
| 1941 | the case for i386/i486 targets). The RTL looks like |
---|
| 1942 | (MEM (CONST ...)) even though this variable is a local `auto' |
---|
| 1943 | or a local `register' variable. In effect, what has happened |
---|
| 1944 | is that the reload pass has seen that all assignments and |
---|
| 1945 | references for one such a local variable can be replaced by |
---|
| 1946 | equivalent assignments and references to some static storage |
---|
| 1947 | variable, thereby avoiding the need for a register. In such |
---|
| 1948 | cases we're forced to lie to debuggers and tell them that |
---|
| 1949 | this variable was itself `static'. */ |
---|
| 1950 | current_sym_code = N_LCSYM; |
---|
| 1951 | letter = 'V'; |
---|
| 1952 | current_sym_addr = XEXP (XEXP (home, 0), 0); |
---|
| 1953 | } |
---|
| 1954 | else if (GET_CODE (home) == CONCAT) |
---|
| 1955 | { |
---|
| 1956 | tree subtype = TREE_TYPE (type); |
---|
| 1957 | |
---|
| 1958 | /* If the variable's storage is in two parts, |
---|
| 1959 | output each as a separate stab with a modified name. */ |
---|
| 1960 | if (WORDS_BIG_ENDIAN) |
---|
| 1961 | dbxout_symbol_location (decl, subtype, "$imag", XEXP (home, 0)); |
---|
| 1962 | else |
---|
| 1963 | dbxout_symbol_location (decl, subtype, "$real", XEXP (home, 0)); |
---|
| 1964 | |
---|
| 1965 | /* Cast avoids warning in old compilers. */ |
---|
| 1966 | current_sym_code = (STAB_CODE_TYPE) 0; |
---|
| 1967 | current_sym_value = 0; |
---|
| 1968 | current_sym_addr = 0; |
---|
| 1969 | dbxout_prepare_symbol (decl); |
---|
| 1970 | |
---|
| 1971 | if (WORDS_BIG_ENDIAN) |
---|
| 1972 | dbxout_symbol_location (decl, subtype, "$real", XEXP (home, 1)); |
---|
| 1973 | else |
---|
| 1974 | dbxout_symbol_location (decl, subtype, "$imag", XEXP (home, 1)); |
---|
| 1975 | return; |
---|
| 1976 | } |
---|
| 1977 | else |
---|
| 1978 | /* Address might be a MEM, when DECL is a variable-sized object. |
---|
| 1979 | Or it might be const0_rtx, meaning previous passes |
---|
| 1980 | want us to ignore this variable. */ |
---|
| 1981 | return; |
---|
| 1982 | |
---|
| 1983 | /* Ok, start a symtab entry and output the variable name. */ |
---|
| 1984 | FORCE_TEXT; |
---|
| 1985 | |
---|
| 1986 | #ifdef DBX_STATIC_BLOCK_START |
---|
| 1987 | DBX_STATIC_BLOCK_START (asmfile, current_sym_code); |
---|
| 1988 | #endif |
---|
| 1989 | |
---|
| 1990 | dbxout_symbol_name (decl, suffix, letter); |
---|
| 1991 | dbxout_type (type, 0, 0); |
---|
| 1992 | dbxout_finish_symbol (decl); |
---|
| 1993 | |
---|
| 1994 | #ifdef DBX_STATIC_BLOCK_END |
---|
| 1995 | DBX_STATIC_BLOCK_END (asmfile, current_sym_code); |
---|
| 1996 | #endif |
---|
| 1997 | } |
---|
| 1998 | |
---|
| 1999 | /* Output the symbol name of DECL for a stabs, with suffix SUFFIX. |
---|
| 2000 | Then output LETTER to indicate the kind of location the symbol has. */ |
---|
| 2001 | |
---|
| 2002 | static void |
---|
| 2003 | dbxout_symbol_name (decl, suffix, letter) |
---|
| 2004 | tree decl; |
---|
| 2005 | char *suffix; |
---|
| 2006 | int letter; |
---|
| 2007 | { |
---|
| 2008 | /* One slight hitch: if this is a VAR_DECL which is a static |
---|
| 2009 | class member, we must put out the mangled name instead of the |
---|
| 2010 | DECL_NAME. Note also that static member (variable) names DO NOT begin |
---|
| 2011 | with underscores in .stabs directives. */ |
---|
| 2012 | char *name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)); |
---|
| 2013 | if (name == 0) |
---|
| 2014 | name = "(anon)"; |
---|
| 2015 | fprintf (asmfile, "%s \"%s%s:", ASM_STABS_OP, name, |
---|
| 2016 | (suffix ? suffix : "")); |
---|
| 2017 | |
---|
| 2018 | if (letter) putc (letter, asmfile); |
---|
| 2019 | } |
---|
| 2020 | |
---|
| 2021 | static void |
---|
| 2022 | dbxout_prepare_symbol (decl) |
---|
| 2023 | tree decl; |
---|
| 2024 | { |
---|
| 2025 | #ifdef WINNING_GDB |
---|
| 2026 | char *filename = DECL_SOURCE_FILE (decl); |
---|
| 2027 | |
---|
| 2028 | dbxout_source_file (asmfile, filename); |
---|
| 2029 | #endif |
---|
| 2030 | } |
---|
| 2031 | |
---|
| 2032 | static void |
---|
| 2033 | dbxout_finish_symbol (sym) |
---|
| 2034 | tree sym; |
---|
| 2035 | { |
---|
| 2036 | #ifdef DBX_FINISH_SYMBOL |
---|
| 2037 | DBX_FINISH_SYMBOL (sym); |
---|
| 2038 | #else |
---|
| 2039 | int line = 0; |
---|
| 2040 | if (use_gnu_debug_info_extensions && sym != 0) |
---|
| 2041 | line = DECL_SOURCE_LINE (sym); |
---|
| 2042 | |
---|
| 2043 | fprintf (asmfile, "\",%d,0,%d,", current_sym_code, line); |
---|
| 2044 | if (current_sym_addr) |
---|
| 2045 | output_addr_const (asmfile, current_sym_addr); |
---|
| 2046 | else |
---|
| 2047 | fprintf (asmfile, "%d", current_sym_value); |
---|
| 2048 | putc ('\n', asmfile); |
---|
| 2049 | #endif |
---|
| 2050 | } |
---|
| 2051 | |
---|
| 2052 | /* Output definitions of all the decls in a chain. */ |
---|
| 2053 | |
---|
| 2054 | void |
---|
| 2055 | dbxout_syms (syms) |
---|
| 2056 | tree syms; |
---|
| 2057 | { |
---|
| 2058 | while (syms) |
---|
| 2059 | { |
---|
| 2060 | dbxout_symbol (syms, 1); |
---|
| 2061 | syms = TREE_CHAIN (syms); |
---|
| 2062 | } |
---|
| 2063 | } |
---|
| 2064 | |
---|
| 2065 | /* The following two functions output definitions of function parameters. |
---|
| 2066 | Each parameter gets a definition locating it in the parameter list. |
---|
| 2067 | Each parameter that is a register variable gets a second definition |
---|
| 2068 | locating it in the register. |
---|
| 2069 | |
---|
| 2070 | Printing or argument lists in gdb uses the definitions that |
---|
| 2071 | locate in the parameter list. But reference to the variable in |
---|
| 2072 | expressions uses preferentially the definition as a register. */ |
---|
| 2073 | |
---|
| 2074 | /* Output definitions, referring to storage in the parmlist, |
---|
| 2075 | of all the parms in PARMS, which is a chain of PARM_DECL nodes. */ |
---|
| 2076 | |
---|
| 2077 | void |
---|
| 2078 | dbxout_parms (parms) |
---|
| 2079 | tree parms; |
---|
| 2080 | { |
---|
| 2081 | for (; parms; parms = TREE_CHAIN (parms)) |
---|
| 2082 | if (DECL_NAME (parms) && TREE_TYPE (parms) != error_mark_node) |
---|
| 2083 | { |
---|
| 2084 | dbxout_prepare_symbol (parms); |
---|
| 2085 | |
---|
| 2086 | /* Perform any necessary register eliminations on the parameter's rtl, |
---|
| 2087 | so that the debugging output will be accurate. */ |
---|
| 2088 | DECL_INCOMING_RTL (parms) |
---|
| 2089 | = eliminate_regs (DECL_INCOMING_RTL (parms), 0, NULL_RTX); |
---|
| 2090 | DECL_RTL (parms) = eliminate_regs (DECL_RTL (parms), 0, NULL_RTX); |
---|
| 2091 | #ifdef LEAF_REG_REMAP |
---|
| 2092 | if (leaf_function) |
---|
| 2093 | { |
---|
| 2094 | leaf_renumber_regs_insn (DECL_INCOMING_RTL (parms)); |
---|
| 2095 | leaf_renumber_regs_insn (DECL_RTL (parms)); |
---|
| 2096 | } |
---|
| 2097 | #endif |
---|
| 2098 | |
---|
| 2099 | if (PARM_PASSED_IN_MEMORY (parms)) |
---|
| 2100 | { |
---|
| 2101 | rtx addr = XEXP (DECL_INCOMING_RTL (parms), 0); |
---|
| 2102 | |
---|
| 2103 | /* ??? Here we assume that the parm address is indexed |
---|
| 2104 | off the frame pointer or arg pointer. |
---|
| 2105 | If that is not true, we produce meaningless results, |
---|
| 2106 | but do not crash. */ |
---|
| 2107 | if (GET_CODE (addr) == PLUS |
---|
| 2108 | && GET_CODE (XEXP (addr, 1)) == CONST_INT) |
---|
| 2109 | current_sym_value = INTVAL (XEXP (addr, 1)); |
---|
| 2110 | else |
---|
| 2111 | current_sym_value = 0; |
---|
| 2112 | |
---|
| 2113 | current_sym_code = N_PSYM; |
---|
| 2114 | current_sym_addr = 0; |
---|
| 2115 | |
---|
| 2116 | FORCE_TEXT; |
---|
| 2117 | if (DECL_NAME (parms)) |
---|
| 2118 | { |
---|
| 2119 | current_sym_nchars = 2 + IDENTIFIER_LENGTH (DECL_NAME (parms)); |
---|
| 2120 | |
---|
| 2121 | fprintf (asmfile, "%s \"%s:%c", ASM_STABS_OP, |
---|
| 2122 | IDENTIFIER_POINTER (DECL_NAME (parms)), |
---|
| 2123 | DBX_MEMPARM_STABS_LETTER); |
---|
| 2124 | } |
---|
| 2125 | else |
---|
| 2126 | { |
---|
| 2127 | current_sym_nchars = 8; |
---|
| 2128 | fprintf (asmfile, "%s \"(anon):%c", ASM_STABS_OP, |
---|
| 2129 | DBX_MEMPARM_STABS_LETTER); |
---|
| 2130 | } |
---|
| 2131 | |
---|
| 2132 | dbxout_type (DECL_ARG_TYPE (parms), 0, 0); |
---|
| 2133 | current_sym_value = DEBUGGER_ARG_OFFSET (current_sym_value, addr); |
---|
| 2134 | dbxout_finish_symbol (parms); |
---|
| 2135 | } |
---|
| 2136 | else if (GET_CODE (DECL_RTL (parms)) == REG) |
---|
| 2137 | { |
---|
| 2138 | rtx best_rtl; |
---|
| 2139 | char regparm_letter; |
---|
| 2140 | tree parm_type; |
---|
| 2141 | /* Parm passed in registers and lives in registers or nowhere. */ |
---|
| 2142 | |
---|
| 2143 | current_sym_code = DBX_REGPARM_STABS_CODE; |
---|
| 2144 | regparm_letter = DBX_REGPARM_STABS_LETTER; |
---|
| 2145 | current_sym_addr = 0; |
---|
| 2146 | |
---|
| 2147 | /* If parm lives in a register, use that register; |
---|
| 2148 | pretend the parm was passed there. It would be more consistent |
---|
| 2149 | to describe the register where the parm was passed, |
---|
| 2150 | but in practice that register usually holds something else. |
---|
| 2151 | |
---|
| 2152 | If we use DECL_RTL, then we must use the declared type of |
---|
| 2153 | the variable, not the type that it arrived in. */ |
---|
| 2154 | if (REGNO (DECL_RTL (parms)) >= 0 |
---|
| 2155 | && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER) |
---|
| 2156 | { |
---|
| 2157 | best_rtl = DECL_RTL (parms); |
---|
| 2158 | parm_type = TREE_TYPE (parms); |
---|
| 2159 | } |
---|
| 2160 | /* If the parm lives nowhere, use the register where it was |
---|
| 2161 | passed. It is also better to use the declared type here. */ |
---|
| 2162 | else |
---|
| 2163 | { |
---|
| 2164 | best_rtl = DECL_INCOMING_RTL (parms); |
---|
| 2165 | parm_type = TREE_TYPE (parms); |
---|
| 2166 | } |
---|
| 2167 | current_sym_value = DBX_REGISTER_NUMBER (REGNO (best_rtl)); |
---|
| 2168 | |
---|
| 2169 | FORCE_TEXT; |
---|
| 2170 | if (DECL_NAME (parms)) |
---|
| 2171 | { |
---|
| 2172 | current_sym_nchars = 2 + IDENTIFIER_LENGTH (DECL_NAME (parms)); |
---|
| 2173 | fprintf (asmfile, "%s \"%s:%c", ASM_STABS_OP, |
---|
| 2174 | IDENTIFIER_POINTER (DECL_NAME (parms)), |
---|
| 2175 | regparm_letter); |
---|
| 2176 | } |
---|
| 2177 | else |
---|
| 2178 | { |
---|
| 2179 | current_sym_nchars = 8; |
---|
| 2180 | fprintf (asmfile, "%s \"(anon):%c", ASM_STABS_OP, |
---|
| 2181 | regparm_letter); |
---|
| 2182 | } |
---|
| 2183 | |
---|
| 2184 | dbxout_type (parm_type, 0, 0); |
---|
| 2185 | dbxout_finish_symbol (parms); |
---|
| 2186 | } |
---|
| 2187 | else if (GET_CODE (DECL_RTL (parms)) == MEM |
---|
| 2188 | && GET_CODE (XEXP (DECL_RTL (parms), 0)) == REG |
---|
| 2189 | && REGNO (XEXP (DECL_RTL (parms), 0)) != HARD_FRAME_POINTER_REGNUM |
---|
| 2190 | && REGNO (XEXP (DECL_RTL (parms), 0)) != STACK_POINTER_REGNUM |
---|
| 2191 | #if ARG_POINTER_REGNUM != HARD_FRAME_POINTER_REGNUM |
---|
| 2192 | && REGNO (XEXP (DECL_RTL (parms), 0)) != ARG_POINTER_REGNUM |
---|
| 2193 | #endif |
---|
| 2194 | ) |
---|
| 2195 | { |
---|
| 2196 | /* Parm was passed via invisible reference. |
---|
| 2197 | That is, its address was passed in a register. |
---|
| 2198 | Output it as if it lived in that register. |
---|
| 2199 | The debugger will know from the type |
---|
| 2200 | that it was actually passed by invisible reference. */ |
---|
| 2201 | |
---|
| 2202 | char regparm_letter; |
---|
| 2203 | /* Parm passed in registers and lives in registers or nowhere. */ |
---|
| 2204 | |
---|
| 2205 | current_sym_code = DBX_REGPARM_STABS_CODE; |
---|
| 2206 | if (use_gnu_debug_info_extensions) |
---|
| 2207 | regparm_letter = GDB_INV_REF_REGPARM_STABS_LETTER; |
---|
| 2208 | else |
---|
| 2209 | regparm_letter = DBX_REGPARM_STABS_LETTER; |
---|
| 2210 | |
---|
| 2211 | /* DECL_RTL looks like (MEM (REG...). Get the register number. |
---|
| 2212 | If it is an unallocated pseudo-reg, then use the register where |
---|
| 2213 | it was passed instead. */ |
---|
| 2214 | if (REGNO (XEXP (DECL_RTL (parms), 0)) >= 0 |
---|
| 2215 | && REGNO (XEXP (DECL_RTL (parms), 0)) < FIRST_PSEUDO_REGISTER) |
---|
| 2216 | current_sym_value = REGNO (XEXP (DECL_RTL (parms), 0)); |
---|
| 2217 | else |
---|
| 2218 | current_sym_value = REGNO (DECL_INCOMING_RTL (parms)); |
---|
| 2219 | |
---|
| 2220 | current_sym_addr = 0; |
---|
| 2221 | |
---|
| 2222 | FORCE_TEXT; |
---|
| 2223 | if (DECL_NAME (parms)) |
---|
| 2224 | { |
---|
| 2225 | current_sym_nchars = 2 + strlen (IDENTIFIER_POINTER (DECL_NAME (parms))); |
---|
| 2226 | |
---|
| 2227 | fprintf (asmfile, "%s \"%s:%c", ASM_STABS_OP, |
---|
| 2228 | IDENTIFIER_POINTER (DECL_NAME (parms)), |
---|
| 2229 | regparm_letter); |
---|
| 2230 | } |
---|
| 2231 | else |
---|
| 2232 | { |
---|
| 2233 | current_sym_nchars = 8; |
---|
| 2234 | fprintf (asmfile, "%s \"(anon):%c", ASM_STABS_OP, |
---|
| 2235 | regparm_letter); |
---|
| 2236 | } |
---|
| 2237 | |
---|
| 2238 | dbxout_type (TREE_TYPE (parms), 0, 0); |
---|
| 2239 | dbxout_finish_symbol (parms); |
---|
| 2240 | } |
---|
| 2241 | else if (GET_CODE (DECL_RTL (parms)) == MEM |
---|
| 2242 | && XEXP (DECL_RTL (parms), 0) != const0_rtx |
---|
| 2243 | /* ??? A constant address for a parm can happen |
---|
| 2244 | when the reg it lives in is equiv to a constant in memory. |
---|
| 2245 | Should make this not happen, after 2.4. */ |
---|
| 2246 | && ! CONSTANT_P (XEXP (DECL_RTL (parms), 0))) |
---|
| 2247 | { |
---|
| 2248 | /* Parm was passed in registers but lives on the stack. */ |
---|
| 2249 | |
---|
| 2250 | current_sym_code = N_PSYM; |
---|
| 2251 | /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))), |
---|
| 2252 | in which case we want the value of that CONST_INT, |
---|
| 2253 | or (MEM (REG ...)) or (MEM (MEM ...)), |
---|
| 2254 | in which case we use a value of zero. */ |
---|
| 2255 | if (GET_CODE (XEXP (DECL_RTL (parms), 0)) == REG |
---|
| 2256 | || GET_CODE (XEXP (DECL_RTL (parms), 0)) == MEM) |
---|
| 2257 | current_sym_value = 0; |
---|
| 2258 | else |
---|
| 2259 | current_sym_value = INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)); |
---|
| 2260 | current_sym_addr = 0; |
---|
| 2261 | |
---|
| 2262 | FORCE_TEXT; |
---|
| 2263 | if (DECL_NAME (parms)) |
---|
| 2264 | { |
---|
| 2265 | current_sym_nchars = 2 + strlen (IDENTIFIER_POINTER (DECL_NAME (parms))); |
---|
| 2266 | |
---|
| 2267 | fprintf (asmfile, "%s \"%s:%c", ASM_STABS_OP, |
---|
| 2268 | IDENTIFIER_POINTER (DECL_NAME (parms)), |
---|
| 2269 | DBX_MEMPARM_STABS_LETTER); |
---|
| 2270 | } |
---|
| 2271 | else |
---|
| 2272 | { |
---|
| 2273 | current_sym_nchars = 8; |
---|
| 2274 | fprintf (asmfile, "%s \"(anon):%c", ASM_STABS_OP, |
---|
| 2275 | DBX_MEMPARM_STABS_LETTER); |
---|
| 2276 | } |
---|
| 2277 | |
---|
| 2278 | current_sym_value |
---|
| 2279 | = DEBUGGER_ARG_OFFSET (current_sym_value, |
---|
| 2280 | XEXP (DECL_RTL (parms), 0)); |
---|
| 2281 | dbxout_type (TREE_TYPE (parms), 0, 0); |
---|
| 2282 | dbxout_finish_symbol (parms); |
---|
| 2283 | } |
---|
| 2284 | } |
---|
| 2285 | } |
---|
| 2286 | |
---|
| 2287 | /* Output definitions for the places where parms live during the function, |
---|
| 2288 | when different from where they were passed, when the parms were passed |
---|
| 2289 | in memory. |
---|
| 2290 | |
---|
| 2291 | It is not useful to do this for parms passed in registers |
---|
| 2292 | that live during the function in different registers, because it is |
---|
| 2293 | impossible to look in the passed register for the passed value, |
---|
| 2294 | so we use the within-the-function register to begin with. |
---|
| 2295 | |
---|
| 2296 | PARMS is a chain of PARM_DECL nodes. */ |
---|
| 2297 | |
---|
| 2298 | void |
---|
| 2299 | dbxout_reg_parms (parms) |
---|
| 2300 | tree parms; |
---|
| 2301 | { |
---|
| 2302 | for (; parms; parms = TREE_CHAIN (parms)) |
---|
| 2303 | if (DECL_NAME (parms) && PARM_PASSED_IN_MEMORY (parms)) |
---|
| 2304 | { |
---|
| 2305 | dbxout_prepare_symbol (parms); |
---|
| 2306 | |
---|
| 2307 | /* Report parms that live in registers during the function |
---|
| 2308 | but were passed in memory. */ |
---|
| 2309 | if (GET_CODE (DECL_RTL (parms)) == REG |
---|
| 2310 | && REGNO (DECL_RTL (parms)) >= 0 |
---|
| 2311 | && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER) |
---|
| 2312 | dbxout_symbol_location (parms, TREE_TYPE (parms), |
---|
| 2313 | 0, DECL_RTL (parms)); |
---|
| 2314 | else if (GET_CODE (DECL_RTL (parms)) == CONCAT) |
---|
| 2315 | dbxout_symbol_location (parms, TREE_TYPE (parms), |
---|
| 2316 | 0, DECL_RTL (parms)); |
---|
| 2317 | /* Report parms that live in memory but not where they were passed. */ |
---|
| 2318 | else if (GET_CODE (DECL_RTL (parms)) == MEM |
---|
| 2319 | && ! rtx_equal_p (DECL_RTL (parms), DECL_INCOMING_RTL (parms))) |
---|
| 2320 | dbxout_symbol_location (parms, TREE_TYPE (parms), |
---|
| 2321 | 0, DECL_RTL (parms)); |
---|
| 2322 | } |
---|
| 2323 | } |
---|
| 2324 | |
---|
| 2325 | /* Given a chain of ..._TYPE nodes (as come in a parameter list), |
---|
| 2326 | output definitions of those names, in raw form */ |
---|
| 2327 | |
---|
| 2328 | void |
---|
| 2329 | dbxout_args (args) |
---|
| 2330 | tree args; |
---|
| 2331 | { |
---|
| 2332 | while (args) |
---|
| 2333 | { |
---|
| 2334 | putc (',', asmfile); |
---|
| 2335 | dbxout_type (TREE_VALUE (args), 0, 0); |
---|
| 2336 | CHARS (1); |
---|
| 2337 | args = TREE_CHAIN (args); |
---|
| 2338 | } |
---|
| 2339 | } |
---|
| 2340 | |
---|
| 2341 | /* Given a chain of ..._TYPE nodes, |
---|
| 2342 | find those which have typedef names and output those names. |
---|
| 2343 | This is to ensure those types get output. */ |
---|
| 2344 | |
---|
| 2345 | void |
---|
| 2346 | dbxout_types (types) |
---|
| 2347 | register tree types; |
---|
| 2348 | { |
---|
| 2349 | while (types) |
---|
| 2350 | { |
---|
| 2351 | if (TYPE_NAME (types) |
---|
| 2352 | && TREE_CODE (TYPE_NAME (types)) == TYPE_DECL |
---|
| 2353 | && ! TREE_ASM_WRITTEN (TYPE_NAME (types))) |
---|
| 2354 | dbxout_symbol (TYPE_NAME (types), 1); |
---|
| 2355 | types = TREE_CHAIN (types); |
---|
| 2356 | } |
---|
| 2357 | } |
---|
| 2358 | |
---|
| 2359 | /* Output everything about a symbol block (a BLOCK node |
---|
| 2360 | that represents a scope level), |
---|
| 2361 | including recursive output of contained blocks. |
---|
| 2362 | |
---|
| 2363 | BLOCK is the BLOCK node. |
---|
| 2364 | DEPTH is its depth within containing symbol blocks. |
---|
| 2365 | ARGS is usually zero; but for the outermost block of the |
---|
| 2366 | body of a function, it is a chain of PARM_DECLs for the function parameters. |
---|
| 2367 | We output definitions of all the register parms |
---|
| 2368 | as if they were local variables of that block. |
---|
| 2369 | |
---|
| 2370 | If -g1 was used, we count blocks just the same, but output nothing |
---|
| 2371 | except for the outermost block. |
---|
| 2372 | |
---|
| 2373 | Actually, BLOCK may be several blocks chained together. |
---|
| 2374 | We handle them all in sequence. */ |
---|
| 2375 | |
---|
| 2376 | static void |
---|
| 2377 | dbxout_block (block, depth, args) |
---|
| 2378 | register tree block; |
---|
| 2379 | int depth; |
---|
| 2380 | tree args; |
---|
| 2381 | { |
---|
| 2382 | int blocknum; |
---|
| 2383 | |
---|
| 2384 | while (block) |
---|
| 2385 | { |
---|
| 2386 | /* Ignore blocks never expanded or otherwise marked as real. */ |
---|
| 2387 | if (TREE_USED (block)) |
---|
| 2388 | { |
---|
| 2389 | #ifndef DBX_LBRAC_FIRST |
---|
| 2390 | /* In dbx format, the syms of a block come before the N_LBRAC. */ |
---|
| 2391 | if (debug_info_level != DINFO_LEVEL_TERSE || depth == 0) |
---|
| 2392 | dbxout_syms (BLOCK_VARS (block)); |
---|
| 2393 | if (args) |
---|
| 2394 | dbxout_reg_parms (args); |
---|
| 2395 | #endif |
---|
| 2396 | |
---|
| 2397 | /* Now output an N_LBRAC symbol to represent the beginning of |
---|
| 2398 | the block. Use the block's tree-walk order to generate |
---|
| 2399 | the assembler symbols LBBn and LBEn |
---|
| 2400 | that final will define around the code in this block. */ |
---|
| 2401 | if (depth > 0 && debug_info_level != DINFO_LEVEL_TERSE) |
---|
| 2402 | { |
---|
| 2403 | char buf[20]; |
---|
| 2404 | blocknum = next_block_number++; |
---|
| 2405 | ASM_GENERATE_INTERNAL_LABEL (buf, "LBB", blocknum); |
---|
| 2406 | |
---|
| 2407 | if (BLOCK_HANDLER_BLOCK (block)) |
---|
| 2408 | { |
---|
| 2409 | /* A catch block. Must precede N_LBRAC. */ |
---|
| 2410 | tree decl = BLOCK_VARS (block); |
---|
| 2411 | while (decl) |
---|
| 2412 | { |
---|
| 2413 | #ifdef DBX_OUTPUT_CATCH |
---|
| 2414 | DBX_OUTPUT_CATCH (asmfile, decl, buf); |
---|
| 2415 | #else |
---|
| 2416 | fprintf (asmfile, "%s \"%s:C1\",%d,0,0,", ASM_STABS_OP, |
---|
| 2417 | IDENTIFIER_POINTER (DECL_NAME (decl)), N_CATCH); |
---|
| 2418 | assemble_name (asmfile, buf); |
---|
| 2419 | fprintf (asmfile, "\n"); |
---|
| 2420 | #endif |
---|
| 2421 | decl = TREE_CHAIN (decl); |
---|
| 2422 | } |
---|
| 2423 | } |
---|
| 2424 | |
---|
| 2425 | #ifdef DBX_OUTPUT_LBRAC |
---|
| 2426 | DBX_OUTPUT_LBRAC (asmfile, buf); |
---|
| 2427 | #else |
---|
| 2428 | fprintf (asmfile, "%s %d,0,0,", ASM_STABN_OP, N_LBRAC); |
---|
| 2429 | assemble_name (asmfile, buf); |
---|
| 2430 | #if DBX_BLOCKS_FUNCTION_RELATIVE |
---|
| 2431 | fputc ('-', asmfile); |
---|
| 2432 | assemble_name (asmfile, XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); |
---|
| 2433 | #endif |
---|
| 2434 | fprintf (asmfile, "\n"); |
---|
| 2435 | #endif |
---|
| 2436 | } |
---|
| 2437 | else if (depth > 0) |
---|
| 2438 | /* Count blocks the same way regardless of debug_info_level. */ |
---|
| 2439 | next_block_number++; |
---|
| 2440 | |
---|
| 2441 | #ifdef DBX_LBRAC_FIRST |
---|
| 2442 | /* On some weird machines, the syms of a block |
---|
| 2443 | come after the N_LBRAC. */ |
---|
| 2444 | if (debug_info_level != DINFO_LEVEL_TERSE || depth == 0) |
---|
| 2445 | dbxout_syms (BLOCK_VARS (block)); |
---|
| 2446 | if (args) |
---|
| 2447 | dbxout_reg_parms (args); |
---|
| 2448 | #endif |
---|
| 2449 | |
---|
| 2450 | /* Output the subblocks. */ |
---|
| 2451 | dbxout_block (BLOCK_SUBBLOCKS (block), depth + 1, NULL_TREE); |
---|
| 2452 | |
---|
| 2453 | /* Refer to the marker for the end of the block. */ |
---|
| 2454 | if (depth > 0 && debug_info_level != DINFO_LEVEL_TERSE) |
---|
| 2455 | { |
---|
| 2456 | char buf[20]; |
---|
| 2457 | ASM_GENERATE_INTERNAL_LABEL (buf, "LBE", blocknum); |
---|
| 2458 | #ifdef DBX_OUTPUT_RBRAC |
---|
| 2459 | DBX_OUTPUT_RBRAC (asmfile, buf); |
---|
| 2460 | #else |
---|
| 2461 | fprintf (asmfile, "%s %d,0,0,", ASM_STABN_OP, N_RBRAC); |
---|
| 2462 | assemble_name (asmfile, buf); |
---|
| 2463 | #if DBX_BLOCKS_FUNCTION_RELATIVE |
---|
| 2464 | fputc ('-', asmfile); |
---|
| 2465 | assemble_name (asmfile, XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); |
---|
| 2466 | #endif |
---|
| 2467 | fprintf (asmfile, "\n"); |
---|
| 2468 | #endif |
---|
| 2469 | } |
---|
| 2470 | } |
---|
| 2471 | block = BLOCK_CHAIN (block); |
---|
| 2472 | } |
---|
| 2473 | } |
---|
| 2474 | |
---|
| 2475 | /* Output the information about a function and its arguments and result. |
---|
| 2476 | Usually this follows the function's code, |
---|
| 2477 | but on some systems, it comes before. */ |
---|
| 2478 | |
---|
| 2479 | static void |
---|
| 2480 | dbxout_really_begin_function (decl) |
---|
| 2481 | tree decl; |
---|
| 2482 | { |
---|
| 2483 | dbxout_symbol (decl, 0); |
---|
| 2484 | dbxout_parms (DECL_ARGUMENTS (decl)); |
---|
| 2485 | if (DECL_NAME (DECL_RESULT (decl)) != 0) |
---|
| 2486 | dbxout_symbol (DECL_RESULT (decl), 1); |
---|
| 2487 | } |
---|
| 2488 | |
---|
| 2489 | /* Called at beginning of output of function definition. */ |
---|
| 2490 | |
---|
| 2491 | void |
---|
| 2492 | dbxout_begin_function (decl) |
---|
| 2493 | tree decl; |
---|
| 2494 | { |
---|
| 2495 | #ifdef DBX_FUNCTION_FIRST |
---|
| 2496 | dbxout_really_begin_function (decl); |
---|
| 2497 | #endif |
---|
| 2498 | } |
---|
| 2499 | |
---|
| 2500 | /* Output dbx data for a function definition. |
---|
| 2501 | This includes a definition of the function name itself (a symbol), |
---|
| 2502 | definitions of the parameters (locating them in the parameter list) |
---|
| 2503 | and then output the block that makes up the function's body |
---|
| 2504 | (including all the auto variables of the function). */ |
---|
| 2505 | |
---|
| 2506 | void |
---|
| 2507 | dbxout_function (decl) |
---|
| 2508 | tree decl; |
---|
| 2509 | { |
---|
| 2510 | #ifndef DBX_FUNCTION_FIRST |
---|
| 2511 | dbxout_really_begin_function (decl); |
---|
| 2512 | #endif |
---|
| 2513 | dbxout_block (DECL_INITIAL (decl), 0, DECL_ARGUMENTS (decl)); |
---|
| 2514 | #ifdef DBX_OUTPUT_FUNCTION_END |
---|
| 2515 | DBX_OUTPUT_FUNCTION_END (asmfile, decl); |
---|
| 2516 | #endif |
---|
| 2517 | } |
---|
| 2518 | #endif /* DBX_DEBUGGING_INFO */ |
---|