[279] | 1 | /*
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| 2 | * COFF file handling for TCC
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| 3 | *
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| 4 | * Copyright (c) 2003, 2004 TK
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| 5 | * Copyright (c) 2004 Fabrice Bellard
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| 6 | *
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| 7 | * This library is free software; you can redistribute it and/or
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| 8 | * modify it under the terms of the GNU Lesser General Public
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| 9 | * License as published by the Free Software Foundation; either
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| 10 | * version 2 of the License, or (at your option) any later version.
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| 11 | *
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| 12 | * This library is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 15 | * Lesser General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU Lesser General Public
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| 18 | * License along with this library; if not, write to the Free Software
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| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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| 20 | */
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| 21 |
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| 22 | #include "tcc.h"
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| 23 |
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| 24 | #define MAXNSCNS 255 /* MAXIMUM NUMBER OF SECTIONS */
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| 25 | #define MAX_STR_TABLE 1000000
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| 26 | AOUTHDR o_filehdr; /* OPTIONAL (A.OUT) FILE HEADER */
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| 27 |
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| 28 | SCNHDR section_header[MAXNSCNS];
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| 29 |
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| 30 | #define MAX_FUNCS 1000
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| 31 | #define MAX_FUNC_NAME_LENGTH 128
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| 32 |
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| 33 | int nFuncs;
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| 34 | char Func[MAX_FUNCS][MAX_FUNC_NAME_LENGTH];
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| 35 | char AssociatedFile[MAX_FUNCS][MAX_FUNC_NAME_LENGTH];
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| 36 | int LineNoFilePtr[MAX_FUNCS];
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| 37 | int EndAddress[MAX_FUNCS];
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| 38 | int LastLineNo[MAX_FUNCS];
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| 39 | int FuncEntries[MAX_FUNCS];
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| 40 |
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| 41 | int OutputTheSection(Section * sect);
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| 42 | short int GetCoffFlags(const char *s);
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| 43 | void SortSymbolTable(void);
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| 44 | Section *FindSection(TCCState * s1, const char *sname);
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| 45 |
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| 46 | int C67_main_entry_point;
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| 47 |
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| 48 | int FindCoffSymbolIndex(const char *func_name);
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| 49 | int nb_syms;
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| 50 |
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| 51 | typedef struct {
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| 52 | long tag;
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| 53 | long size;
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| 54 | long fileptr;
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| 55 | long nextsym;
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| 56 | short int dummy;
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| 57 | } AUXFUNC;
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| 58 |
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| 59 | typedef struct {
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| 60 | long regmask;
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| 61 | unsigned short lineno;
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| 62 | unsigned short nentries;
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| 63 | int localframe;
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| 64 | int nextentry;
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| 65 | short int dummy;
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| 66 | } AUXBF;
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| 67 |
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| 68 | typedef struct {
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| 69 | long dummy;
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| 70 | unsigned short lineno;
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| 71 | unsigned short dummy1;
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| 72 | int dummy2;
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| 73 | int dummy3;
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| 74 | unsigned short dummy4;
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| 75 | } AUXEF;
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| 76 |
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| 77 | ST_FUNC int tcc_output_coff(TCCState *s1, FILE *f)
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| 78 | {
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| 79 | Section *tcc_sect;
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| 80 | SCNHDR *coff_sec;
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| 81 | int file_pointer;
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| 82 | char *Coff_str_table, *pCoff_str_table;
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| 83 | int CoffTextSectionNo, coff_nb_syms;
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| 84 | FILHDR file_hdr; /* FILE HEADER STRUCTURE */
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| 85 | Section *stext, *sdata, *sbss;
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| 86 | int i, NSectionsToOutput = 0;
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| 87 |
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| 88 | Coff_str_table = pCoff_str_table = NULL;
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| 89 |
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| 90 | stext = FindSection(s1, ".text");
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| 91 | sdata = FindSection(s1, ".data");
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| 92 | sbss = FindSection(s1, ".bss");
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| 93 |
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| 94 | nb_syms = symtab_section->data_offset / sizeof(Elf32_Sym);
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| 95 | coff_nb_syms = FindCoffSymbolIndex("XXXXXXXXXX1");
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| 96 |
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| 97 | file_hdr.f_magic = COFF_C67_MAGIC; /* magic number */
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| 98 | file_hdr.f_timdat = 0; /* time & date stamp */
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| 99 | file_hdr.f_opthdr = sizeof(AOUTHDR); /* sizeof(optional hdr) */
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| 100 | file_hdr.f_flags = 0x1143; /* flags (copied from what code composer does) */
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| 101 | file_hdr.f_TargetID = 0x99; /* for C6x = 0x0099 */
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| 102 |
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| 103 | o_filehdr.magic = 0x0108; /* see magic.h */
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| 104 | o_filehdr.vstamp = 0x0190; /* version stamp */
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| 105 | o_filehdr.tsize = stext->data_offset; /* text size in bytes, padded to FW bdry */
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| 106 | o_filehdr.dsize = sdata->data_offset; /* initialized data " " */
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| 107 | o_filehdr.bsize = sbss->data_offset; /* uninitialized data " " */
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| 108 | o_filehdr.entrypt = C67_main_entry_point; /* entry pt. */
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| 109 | o_filehdr.text_start = stext->sh_addr; /* base of text used for this file */
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| 110 | o_filehdr.data_start = sdata->sh_addr; /* base of data used for this file */
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| 111 |
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| 112 |
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| 113 | // create all the section headers
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| 114 |
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| 115 | file_pointer = FILHSZ + sizeof(AOUTHDR);
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| 116 |
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| 117 | CoffTextSectionNo = -1;
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| 118 |
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| 119 | for (i = 1; i < s1->nb_sections; i++) {
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| 120 | coff_sec = §ion_header[i];
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| 121 | tcc_sect = s1->sections[i];
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| 122 |
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| 123 | if (OutputTheSection(tcc_sect)) {
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| 124 | NSectionsToOutput++;
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| 125 |
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| 126 | if (CoffTextSectionNo == -1 && tcc_sect == stext)
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| 127 | CoffTextSectionNo = NSectionsToOutput; // rem which coff sect number the .text sect is
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| 128 |
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| 129 | strcpy(coff_sec->s_name, tcc_sect->name); /* section name */
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| 130 |
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| 131 | coff_sec->s_paddr = tcc_sect->sh_addr; /* physical address */
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| 132 | coff_sec->s_vaddr = tcc_sect->sh_addr; /* virtual address */
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| 133 | coff_sec->s_size = tcc_sect->data_offset; /* section size */
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| 134 | coff_sec->s_scnptr = 0; /* file ptr to raw data for section */
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| 135 | coff_sec->s_relptr = 0; /* file ptr to relocation */
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| 136 | coff_sec->s_lnnoptr = 0; /* file ptr to line numbers */
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| 137 | coff_sec->s_nreloc = 0; /* number of relocation entries */
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| 138 | coff_sec->s_flags = GetCoffFlags(coff_sec->s_name); /* flags */
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| 139 | coff_sec->s_reserved = 0; /* reserved byte */
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| 140 | coff_sec->s_page = 0; /* memory page id */
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| 141 |
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| 142 | file_pointer += sizeof(SCNHDR);
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| 143 | }
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| 144 | }
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| 145 |
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| 146 | file_hdr.f_nscns = NSectionsToOutput; /* number of sections */
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| 147 |
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| 148 | // now loop through and determine file pointer locations
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| 149 | // for the raw data
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| 150 |
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| 151 |
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| 152 | for (i = 1; i < s1->nb_sections; i++) {
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| 153 | coff_sec = §ion_header[i];
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| 154 | tcc_sect = s1->sections[i];
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| 155 |
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| 156 | if (OutputTheSection(tcc_sect)) {
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| 157 | // put raw data
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| 158 | coff_sec->s_scnptr = file_pointer; /* file ptr to raw data for section */
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| 159 | file_pointer += coff_sec->s_size;
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| 160 | }
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| 161 | }
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| 162 |
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| 163 | // now loop through and determine file pointer locations
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| 164 | // for the relocation data
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| 165 |
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| 166 | for (i = 1; i < s1->nb_sections; i++) {
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| 167 | coff_sec = §ion_header[i];
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| 168 | tcc_sect = s1->sections[i];
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| 169 |
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| 170 | if (OutputTheSection(tcc_sect)) {
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| 171 | // put relocations data
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| 172 | if (coff_sec->s_nreloc > 0) {
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| 173 | coff_sec->s_relptr = file_pointer; /* file ptr to relocation */
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| 174 | file_pointer += coff_sec->s_nreloc * sizeof(struct reloc);
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| 175 | }
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| 176 | }
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| 177 | }
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| 178 |
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| 179 | // now loop through and determine file pointer locations
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| 180 | // for the line number data
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| 181 |
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| 182 | for (i = 1; i < s1->nb_sections; i++) {
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| 183 | coff_sec = §ion_header[i];
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| 184 | tcc_sect = s1->sections[i];
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| 185 |
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| 186 | coff_sec->s_nlnno = 0;
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| 187 | coff_sec->s_lnnoptr = 0;
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| 188 |
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| 189 | if (s1->do_debug && tcc_sect == stext) {
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| 190 | // count how many line nos data
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| 191 |
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| 192 | // also find association between source file name and function
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| 193 | // so we can sort the symbol table
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| 194 |
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| 195 |
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| 196 | Stab_Sym *sym, *sym_end;
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| 197 | char func_name[MAX_FUNC_NAME_LENGTH],
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| 198 | last_func_name[MAX_FUNC_NAME_LENGTH];
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| 199 | unsigned long func_addr, last_pc, pc;
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| 200 | const char *incl_files[INCLUDE_STACK_SIZE];
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| 201 | int incl_index, len, last_line_num;
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| 202 | const char *str, *p;
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| 203 |
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| 204 | coff_sec->s_lnnoptr = file_pointer; /* file ptr to linno */
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| 205 |
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| 206 |
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| 207 | func_name[0] = '\0';
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| 208 | func_addr = 0;
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| 209 | incl_index = 0;
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| 210 | last_func_name[0] = '\0';
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| 211 | last_pc = 0xffffffff;
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| 212 | last_line_num = 1;
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| 213 | sym = (Stab_Sym *) stab_section->data + 1;
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| 214 | sym_end =
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| 215 | (Stab_Sym *) (stab_section->data +
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| 216 | stab_section->data_offset);
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| 217 |
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| 218 | nFuncs = 0;
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| 219 | while (sym < sym_end) {
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| 220 | switch (sym->n_type) {
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| 221 | /* function start or end */
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| 222 | case N_FUN:
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| 223 | if (sym->n_strx == 0) {
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| 224 | // end of function
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| 225 |
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| 226 | coff_sec->s_nlnno++;
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| 227 | file_pointer += LINESZ;
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| 228 |
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| 229 | pc = sym->n_value + func_addr;
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| 230 | func_name[0] = '\0';
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| 231 | func_addr = 0;
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| 232 | EndAddress[nFuncs] = pc;
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| 233 | FuncEntries[nFuncs] =
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| 234 | (file_pointer -
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| 235 | LineNoFilePtr[nFuncs]) / LINESZ - 1;
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| 236 | LastLineNo[nFuncs++] = last_line_num + 1;
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| 237 | } else {
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| 238 | // beginning of function
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| 239 |
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| 240 | LineNoFilePtr[nFuncs] = file_pointer;
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| 241 | coff_sec->s_nlnno++;
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| 242 | file_pointer += LINESZ;
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| 243 |
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| 244 | str =
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| 245 | (const char *) stabstr_section->data +
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| 246 | sym->n_strx;
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| 247 |
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| 248 | p = strchr(str, ':');
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| 249 | if (!p) {
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| 250 | pstrcpy(func_name, sizeof(func_name), str);
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| 251 | pstrcpy(Func[nFuncs], sizeof(func_name), str);
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| 252 | } else {
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| 253 | len = p - str;
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| 254 | if (len > sizeof(func_name) - 1)
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| 255 | len = sizeof(func_name) - 1;
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| 256 | memcpy(func_name, str, len);
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| 257 | memcpy(Func[nFuncs], str, len);
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| 258 | func_name[len] = '\0';
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| 259 | }
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| 260 |
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| 261 | // save the file that it came in so we can sort later
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| 262 | pstrcpy(AssociatedFile[nFuncs], sizeof(func_name),
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| 263 | incl_files[incl_index - 1]);
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| 264 |
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| 265 | func_addr = sym->n_value;
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| 266 | }
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| 267 | break;
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| 268 |
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| 269 | /* line number info */
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| 270 | case N_SLINE:
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| 271 | pc = sym->n_value + func_addr;
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| 272 |
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| 273 | last_pc = pc;
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| 274 | last_line_num = sym->n_desc;
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| 275 |
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| 276 | /* XXX: slow! */
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| 277 | strcpy(last_func_name, func_name);
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| 278 |
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| 279 | coff_sec->s_nlnno++;
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| 280 | file_pointer += LINESZ;
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| 281 | break;
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| 282 | /* include files */
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| 283 | case N_BINCL:
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| 284 | str =
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| 285 | (const char *) stabstr_section->data + sym->n_strx;
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| 286 | add_incl:
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| 287 | if (incl_index < INCLUDE_STACK_SIZE) {
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| 288 | incl_files[incl_index++] = str;
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| 289 | }
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| 290 | break;
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| 291 | case N_EINCL:
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| 292 | if (incl_index > 1)
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| 293 | incl_index--;
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| 294 | break;
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| 295 | case N_SO:
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| 296 | if (sym->n_strx == 0) {
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| 297 | incl_index = 0; /* end of translation unit */
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| 298 | } else {
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| 299 | str =
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| 300 | (const char *) stabstr_section->data +
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| 301 | sym->n_strx;
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| 302 | /* do not add path */
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| 303 | len = strlen(str);
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| 304 | if (len > 0 && str[len - 1] != '/')
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| 305 | goto add_incl;
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| 306 | }
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| 307 | break;
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| 308 | }
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| 309 | sym++;
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| 310 | }
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| 311 | }
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| 312 |
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| 313 | }
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| 314 |
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| 315 | file_hdr.f_symptr = file_pointer; /* file pointer to symtab */
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| 316 |
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| 317 | if (s1->do_debug)
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| 318 | file_hdr.f_nsyms = coff_nb_syms; /* number of symtab entries */
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| 319 | else
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| 320 | file_hdr.f_nsyms = 0;
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| 321 |
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| 322 | file_pointer += file_hdr.f_nsyms * SYMNMLEN;
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| 323 |
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| 324 | // OK now we are all set to write the file
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| 325 |
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| 326 |
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| 327 | fwrite(&file_hdr, FILHSZ, 1, f);
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| 328 | fwrite(&o_filehdr, sizeof(o_filehdr), 1, f);
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| 329 |
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| 330 | // write section headers
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| 331 | for (i = 1; i < s1->nb_sections; i++) {
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| 332 | coff_sec = §ion_header[i];
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| 333 | tcc_sect = s1->sections[i];
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| 334 |
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| 335 | if (OutputTheSection(tcc_sect)) {
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| 336 | fwrite(coff_sec, sizeof(SCNHDR), 1, f);
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| 337 | }
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| 338 | }
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| 339 |
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| 340 | // write raw data
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| 341 | for (i = 1; i < s1->nb_sections; i++) {
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| 342 | coff_sec = §ion_header[i];
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| 343 | tcc_sect = s1->sections[i];
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| 344 |
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| 345 | if (OutputTheSection(tcc_sect)) {
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| 346 | fwrite(tcc_sect->data, tcc_sect->data_offset, 1, f);
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| 347 | }
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| 348 | }
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| 349 |
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| 350 | // write relocation data
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| 351 | for (i = 1; i < s1->nb_sections; i++) {
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| 352 | coff_sec = §ion_header[i];
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| 353 | tcc_sect = s1->sections[i];
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| 354 |
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| 355 | if (OutputTheSection(tcc_sect)) {
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| 356 | // put relocations data
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| 357 | if (coff_sec->s_nreloc > 0) {
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| 358 | fwrite(tcc_sect->reloc,
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| 359 | coff_sec->s_nreloc * sizeof(struct reloc), 1, f);
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| 360 | }
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| 361 | }
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| 362 | }
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| 363 |
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| 364 |
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| 365 | // group the symbols in order of filename, func1, func2, etc
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| 366 | // finally global symbols
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| 367 |
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| 368 | if (s1->do_debug)
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| 369 | SortSymbolTable();
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| 370 |
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| 371 | // write line no data
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| 372 |
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| 373 | for (i = 1; i < s1->nb_sections; i++) {
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| 374 | coff_sec = §ion_header[i];
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| 375 | tcc_sect = s1->sections[i];
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| 376 |
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| 377 | if (s1->do_debug && tcc_sect == stext) {
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| 378 | // count how many line nos data
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| 379 |
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| 380 |
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| 381 | Stab_Sym *sym, *sym_end;
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| 382 | char func_name[128], last_func_name[128];
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| 383 | unsigned long func_addr, last_pc, pc;
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| 384 | const char *incl_files[INCLUDE_STACK_SIZE];
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| 385 | int incl_index, len, last_line_num;
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| 386 | const char *str, *p;
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| 387 |
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| 388 | LINENO CoffLineNo;
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| 389 |
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| 390 | func_name[0] = '\0';
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| 391 | func_addr = 0;
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| 392 | incl_index = 0;
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| 393 | last_func_name[0] = '\0';
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| 394 | last_pc = 0;
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| 395 | last_line_num = 1;
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| 396 | sym = (Stab_Sym *) stab_section->data + 1;
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| 397 | sym_end =
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| 398 | (Stab_Sym *) (stab_section->data +
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| 399 | stab_section->data_offset);
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| 400 |
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| 401 | while (sym < sym_end) {
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| 402 | switch (sym->n_type) {
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| 403 | /* function start or end */
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| 404 | case N_FUN:
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| 405 | if (sym->n_strx == 0) {
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| 406 | // end of function
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| 407 |
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| 408 | CoffLineNo.l_addr.l_paddr = last_pc;
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| 409 | CoffLineNo.l_lnno = last_line_num + 1;
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| 410 | fwrite(&CoffLineNo, 6, 1, f);
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| 411 |
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| 412 | pc = sym->n_value + func_addr;
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| 413 | func_name[0] = '\0';
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| 414 | func_addr = 0;
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| 415 | } else {
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| 416 | // beginning of function
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| 417 |
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| 418 | str =
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| 419 | (const char *) stabstr_section->data +
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| 420 | sym->n_strx;
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| 421 |
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| 422 |
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| 423 | p = strchr(str, ':');
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| 424 | if (!p) {
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| 425 | pstrcpy(func_name, sizeof(func_name), str);
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| 426 | } else {
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| 427 | len = p - str;
|
---|
| 428 | if (len > sizeof(func_name) - 1)
|
---|
| 429 | len = sizeof(func_name) - 1;
|
---|
| 430 | memcpy(func_name, str, len);
|
---|
| 431 | func_name[len] = '\0';
|
---|
| 432 | }
|
---|
| 433 | func_addr = sym->n_value;
|
---|
| 434 | last_pc = func_addr;
|
---|
| 435 | last_line_num = -1;
|
---|
| 436 |
|
---|
| 437 | // output a function begin
|
---|
| 438 |
|
---|
| 439 | CoffLineNo.l_addr.l_symndx =
|
---|
| 440 | FindCoffSymbolIndex(func_name);
|
---|
| 441 | CoffLineNo.l_lnno = 0;
|
---|
| 442 |
|
---|
| 443 | fwrite(&CoffLineNo, 6, 1, f);
|
---|
| 444 | }
|
---|
| 445 | break;
|
---|
| 446 |
|
---|
| 447 | /* line number info */
|
---|
| 448 | case N_SLINE:
|
---|
| 449 | pc = sym->n_value + func_addr;
|
---|
| 450 |
|
---|
| 451 |
|
---|
| 452 | /* XXX: slow! */
|
---|
| 453 | strcpy(last_func_name, func_name);
|
---|
| 454 |
|
---|
| 455 | // output a line reference
|
---|
| 456 |
|
---|
| 457 | CoffLineNo.l_addr.l_paddr = last_pc;
|
---|
| 458 |
|
---|
| 459 | if (last_line_num == -1) {
|
---|
| 460 | CoffLineNo.l_lnno = sym->n_desc;
|
---|
| 461 | } else {
|
---|
| 462 | CoffLineNo.l_lnno = last_line_num + 1;
|
---|
| 463 | }
|
---|
| 464 |
|
---|
| 465 | fwrite(&CoffLineNo, 6, 1, f);
|
---|
| 466 |
|
---|
| 467 | last_pc = pc;
|
---|
| 468 | last_line_num = sym->n_desc;
|
---|
| 469 |
|
---|
| 470 | break;
|
---|
| 471 |
|
---|
| 472 | /* include files */
|
---|
| 473 | case N_BINCL:
|
---|
| 474 | str =
|
---|
| 475 | (const char *) stabstr_section->data + sym->n_strx;
|
---|
| 476 | add_incl2:
|
---|
| 477 | if (incl_index < INCLUDE_STACK_SIZE) {
|
---|
| 478 | incl_files[incl_index++] = str;
|
---|
| 479 | }
|
---|
| 480 | break;
|
---|
| 481 | case N_EINCL:
|
---|
| 482 | if (incl_index > 1)
|
---|
| 483 | incl_index--;
|
---|
| 484 | break;
|
---|
| 485 | case N_SO:
|
---|
| 486 | if (sym->n_strx == 0) {
|
---|
| 487 | incl_index = 0; /* end of translation unit */
|
---|
| 488 | } else {
|
---|
| 489 | str =
|
---|
| 490 | (const char *) stabstr_section->data +
|
---|
| 491 | sym->n_strx;
|
---|
| 492 | /* do not add path */
|
---|
| 493 | len = strlen(str);
|
---|
| 494 | if (len > 0 && str[len - 1] != '/')
|
---|
| 495 | goto add_incl2;
|
---|
| 496 | }
|
---|
| 497 | break;
|
---|
| 498 | }
|
---|
| 499 | sym++;
|
---|
| 500 | }
|
---|
| 501 | }
|
---|
| 502 | }
|
---|
| 503 |
|
---|
| 504 | // write symbol table
|
---|
| 505 | if (s1->do_debug) {
|
---|
| 506 | int k;
|
---|
| 507 | struct syment csym;
|
---|
| 508 | AUXFUNC auxfunc;
|
---|
| 509 | AUXBF auxbf;
|
---|
| 510 | AUXEF auxef;
|
---|
| 511 | int i;
|
---|
| 512 | Elf32_Sym *p;
|
---|
| 513 | const char *name;
|
---|
| 514 | int nstr;
|
---|
| 515 | int n = 0;
|
---|
| 516 |
|
---|
| 517 | Coff_str_table = (char *) tcc_malloc(MAX_STR_TABLE);
|
---|
| 518 | pCoff_str_table = Coff_str_table;
|
---|
| 519 | nstr = 0;
|
---|
| 520 |
|
---|
| 521 | p = (Elf32_Sym *) symtab_section->data;
|
---|
| 522 |
|
---|
| 523 |
|
---|
| 524 | for (i = 0; i < nb_syms; i++) {
|
---|
| 525 |
|
---|
| 526 | name = symtab_section->link->data + p->st_name;
|
---|
| 527 |
|
---|
| 528 | for (k = 0; k < 8; k++)
|
---|
| 529 | csym._n._n_name[k] = 0;
|
---|
| 530 |
|
---|
| 531 | if (strlen(name) <= 8) {
|
---|
| 532 | strcpy(csym._n._n_name, name);
|
---|
| 533 | } else {
|
---|
| 534 | if (pCoff_str_table - Coff_str_table + strlen(name) >
|
---|
| 535 | MAX_STR_TABLE - 1)
|
---|
| 536 | tcc_error("String table too large");
|
---|
| 537 |
|
---|
| 538 | csym._n._n_n._n_zeroes = 0;
|
---|
| 539 | csym._n._n_n._n_offset =
|
---|
| 540 | pCoff_str_table - Coff_str_table + 4;
|
---|
| 541 |
|
---|
| 542 | strcpy(pCoff_str_table, name);
|
---|
| 543 | pCoff_str_table += strlen(name) + 1; // skip over null
|
---|
| 544 | nstr++;
|
---|
| 545 | }
|
---|
| 546 |
|
---|
| 547 | if (p->st_info == 4) {
|
---|
| 548 | // put a filename symbol
|
---|
| 549 | csym.n_value = 33; // ?????
|
---|
| 550 | csym.n_scnum = N_DEBUG;
|
---|
| 551 | csym.n_type = 0;
|
---|
| 552 | csym.n_sclass = C_FILE;
|
---|
| 553 | csym.n_numaux = 0;
|
---|
| 554 | fwrite(&csym, 18, 1, f);
|
---|
| 555 | n++;
|
---|
| 556 |
|
---|
| 557 | } else if (p->st_info == 0x12) {
|
---|
| 558 | // find the function data
|
---|
| 559 |
|
---|
| 560 | for (k = 0; k < nFuncs; k++) {
|
---|
| 561 | if (strcmp(name, Func[k]) == 0)
|
---|
| 562 | break;
|
---|
| 563 | }
|
---|
| 564 |
|
---|
| 565 | if (k >= nFuncs) {
|
---|
| 566 | tcc_error("debug info can't find function: %s", name);
|
---|
| 567 | }
|
---|
| 568 | // put a Function Name
|
---|
| 569 |
|
---|
| 570 | csym.n_value = p->st_value; // physical address
|
---|
| 571 | csym.n_scnum = CoffTextSectionNo;
|
---|
| 572 | csym.n_type = MKTYPE(T_INT, DT_FCN, 0, 0, 0, 0, 0);
|
---|
| 573 | csym.n_sclass = C_EXT;
|
---|
| 574 | csym.n_numaux = 1;
|
---|
| 575 | fwrite(&csym, 18, 1, f);
|
---|
| 576 |
|
---|
| 577 | // now put aux info
|
---|
| 578 |
|
---|
| 579 | auxfunc.tag = 0;
|
---|
| 580 | auxfunc.size = EndAddress[k] - p->st_value;
|
---|
| 581 | auxfunc.fileptr = LineNoFilePtr[k];
|
---|
| 582 | auxfunc.nextsym = n + 6; // tktk
|
---|
| 583 | auxfunc.dummy = 0;
|
---|
| 584 | fwrite(&auxfunc, 18, 1, f);
|
---|
| 585 |
|
---|
| 586 | // put a .bf
|
---|
| 587 |
|
---|
| 588 | strcpy(csym._n._n_name, ".bf");
|
---|
| 589 | csym.n_value = p->st_value; // physical address
|
---|
| 590 | csym.n_scnum = CoffTextSectionNo;
|
---|
| 591 | csym.n_type = 0;
|
---|
| 592 | csym.n_sclass = C_FCN;
|
---|
| 593 | csym.n_numaux = 1;
|
---|
| 594 | fwrite(&csym, 18, 1, f);
|
---|
| 595 |
|
---|
| 596 | // now put aux info
|
---|
| 597 |
|
---|
| 598 | auxbf.regmask = 0;
|
---|
| 599 | auxbf.lineno = 0;
|
---|
| 600 | auxbf.nentries = FuncEntries[k];
|
---|
| 601 | auxbf.localframe = 0;
|
---|
| 602 | auxbf.nextentry = n + 6;
|
---|
| 603 | auxbf.dummy = 0;
|
---|
| 604 | fwrite(&auxbf, 18, 1, f);
|
---|
| 605 |
|
---|
| 606 | // put a .ef
|
---|
| 607 |
|
---|
| 608 | strcpy(csym._n._n_name, ".ef");
|
---|
| 609 | csym.n_value = EndAddress[k]; // physical address
|
---|
| 610 | csym.n_scnum = CoffTextSectionNo;
|
---|
| 611 | csym.n_type = 0;
|
---|
| 612 | csym.n_sclass = C_FCN;
|
---|
| 613 | csym.n_numaux = 1;
|
---|
| 614 | fwrite(&csym, 18, 1, f);
|
---|
| 615 |
|
---|
| 616 | // now put aux info
|
---|
| 617 |
|
---|
| 618 | auxef.dummy = 0;
|
---|
| 619 | auxef.lineno = LastLineNo[k];
|
---|
| 620 | auxef.dummy1 = 0;
|
---|
| 621 | auxef.dummy2 = 0;
|
---|
| 622 | auxef.dummy3 = 0;
|
---|
| 623 | auxef.dummy4 = 0;
|
---|
| 624 | fwrite(&auxef, 18, 1, f);
|
---|
| 625 |
|
---|
| 626 | n += 6;
|
---|
| 627 |
|
---|
| 628 | } else {
|
---|
| 629 | // try an put some type info
|
---|
| 630 |
|
---|
| 631 | if ((p->st_other & VT_BTYPE) == VT_DOUBLE) {
|
---|
| 632 | csym.n_type = T_DOUBLE; // int
|
---|
| 633 | csym.n_sclass = C_EXT;
|
---|
| 634 | } else if ((p->st_other & VT_BTYPE) == VT_FLOAT) {
|
---|
| 635 | csym.n_type = T_FLOAT;
|
---|
| 636 | csym.n_sclass = C_EXT;
|
---|
| 637 | } else if ((p->st_other & VT_BTYPE) == VT_INT) {
|
---|
| 638 | csym.n_type = T_INT; // int
|
---|
| 639 | csym.n_sclass = C_EXT;
|
---|
| 640 | } else if ((p->st_other & VT_BTYPE) == VT_SHORT) {
|
---|
| 641 | csym.n_type = T_SHORT;
|
---|
| 642 | csym.n_sclass = C_EXT;
|
---|
| 643 | } else if ((p->st_other & VT_BTYPE) == VT_BYTE) {
|
---|
| 644 | csym.n_type = T_CHAR;
|
---|
| 645 | csym.n_sclass = C_EXT;
|
---|
| 646 | } else {
|
---|
| 647 | csym.n_type = T_INT; // just mark as a label
|
---|
| 648 | csym.n_sclass = C_LABEL;
|
---|
| 649 | }
|
---|
| 650 |
|
---|
| 651 |
|
---|
| 652 | csym.n_value = p->st_value;
|
---|
| 653 | csym.n_scnum = 2;
|
---|
| 654 | csym.n_numaux = 1;
|
---|
| 655 | fwrite(&csym, 18, 1, f);
|
---|
| 656 |
|
---|
| 657 | auxfunc.tag = 0;
|
---|
| 658 | auxfunc.size = 0x20;
|
---|
| 659 | auxfunc.fileptr = 0;
|
---|
| 660 | auxfunc.nextsym = 0;
|
---|
| 661 | auxfunc.dummy = 0;
|
---|
| 662 | fwrite(&auxfunc, 18, 1, f);
|
---|
| 663 | n++;
|
---|
| 664 | n++;
|
---|
| 665 |
|
---|
| 666 | }
|
---|
| 667 |
|
---|
| 668 | p++;
|
---|
| 669 | }
|
---|
| 670 | }
|
---|
| 671 |
|
---|
| 672 | if (s1->do_debug) {
|
---|
| 673 | // write string table
|
---|
| 674 |
|
---|
| 675 | // first write the size
|
---|
| 676 | i = pCoff_str_table - Coff_str_table;
|
---|
| 677 | fwrite(&i, 4, 1, f);
|
---|
| 678 |
|
---|
| 679 | // then write the strings
|
---|
| 680 | fwrite(Coff_str_table, i, 1, f);
|
---|
| 681 |
|
---|
| 682 | tcc_free(Coff_str_table);
|
---|
| 683 | }
|
---|
| 684 |
|
---|
| 685 | return 0;
|
---|
| 686 | }
|
---|
| 687 |
|
---|
| 688 |
|
---|
| 689 |
|
---|
| 690 | // group the symbols in order of filename, func1, func2, etc
|
---|
| 691 | // finally global symbols
|
---|
| 692 |
|
---|
| 693 | void SortSymbolTable(void)
|
---|
| 694 | {
|
---|
| 695 | int i, j, k, n = 0;
|
---|
| 696 | Elf32_Sym *p, *p2, *NewTable;
|
---|
| 697 | char *name, *name2;
|
---|
| 698 |
|
---|
| 699 | NewTable = (Elf32_Sym *) tcc_malloc(nb_syms * sizeof(Elf32_Sym));
|
---|
| 700 |
|
---|
| 701 | p = (Elf32_Sym *) symtab_section->data;
|
---|
| 702 |
|
---|
| 703 |
|
---|
| 704 | // find a file symbol, copy it over
|
---|
| 705 | // then scan the whole symbol list and copy any function
|
---|
| 706 | // symbols that match the file association
|
---|
| 707 |
|
---|
| 708 | for (i = 0; i < nb_syms; i++) {
|
---|
| 709 | if (p->st_info == 4) {
|
---|
| 710 | name = (char *) symtab_section->link->data + p->st_name;
|
---|
| 711 |
|
---|
| 712 | // this is a file symbol, copy it over
|
---|
| 713 |
|
---|
| 714 | NewTable[n++] = *p;
|
---|
| 715 |
|
---|
| 716 | p2 = (Elf32_Sym *) symtab_section->data;
|
---|
| 717 |
|
---|
| 718 | for (j = 0; j < nb_syms; j++) {
|
---|
| 719 | if (p2->st_info == 0x12) {
|
---|
| 720 | // this is a func symbol
|
---|
| 721 |
|
---|
| 722 | name2 =
|
---|
| 723 | (char *) symtab_section->link->data + p2->st_name;
|
---|
| 724 |
|
---|
| 725 | // find the function data index
|
---|
| 726 |
|
---|
| 727 | for (k = 0; k < nFuncs; k++) {
|
---|
| 728 | if (strcmp(name2, Func[k]) == 0)
|
---|
| 729 | break;
|
---|
| 730 | }
|
---|
| 731 |
|
---|
| 732 | if (k >= nFuncs) {
|
---|
| 733 | tcc_error("debug (sort) info can't find function: %s", name2);
|
---|
| 734 | }
|
---|
| 735 |
|
---|
| 736 | if (strcmp(AssociatedFile[k], name) == 0) {
|
---|
| 737 | // yes they match copy it over
|
---|
| 738 |
|
---|
| 739 | NewTable[n++] = *p2;
|
---|
| 740 | }
|
---|
| 741 | }
|
---|
| 742 | p2++;
|
---|
| 743 | }
|
---|
| 744 | }
|
---|
| 745 | p++;
|
---|
| 746 | }
|
---|
| 747 |
|
---|
| 748 | // now all the filename and func symbols should have been copied over
|
---|
| 749 | // copy all the rest over (all except file and funcs)
|
---|
| 750 |
|
---|
| 751 | p = (Elf32_Sym *) symtab_section->data;
|
---|
| 752 | for (i = 0; i < nb_syms; i++) {
|
---|
| 753 | if (p->st_info != 4 && p->st_info != 0x12) {
|
---|
| 754 | NewTable[n++] = *p;
|
---|
| 755 | }
|
---|
| 756 | p++;
|
---|
| 757 | }
|
---|
| 758 |
|
---|
| 759 | if (n != nb_syms)
|
---|
| 760 | tcc_error("Internal Compiler error, debug info");
|
---|
| 761 |
|
---|
| 762 | // copy it all back
|
---|
| 763 |
|
---|
| 764 | p = (Elf32_Sym *) symtab_section->data;
|
---|
| 765 | for (i = 0; i < nb_syms; i++) {
|
---|
| 766 | *p++ = NewTable[i];
|
---|
| 767 | }
|
---|
| 768 |
|
---|
| 769 | tcc_free(NewTable);
|
---|
| 770 | }
|
---|
| 771 |
|
---|
| 772 |
|
---|
| 773 | int FindCoffSymbolIndex(const char *func_name)
|
---|
| 774 | {
|
---|
| 775 | int i, n = 0;
|
---|
| 776 | Elf32_Sym *p;
|
---|
| 777 | char *name;
|
---|
| 778 |
|
---|
| 779 | p = (Elf32_Sym *) symtab_section->data;
|
---|
| 780 |
|
---|
| 781 | for (i = 0; i < nb_syms; i++) {
|
---|
| 782 |
|
---|
| 783 | name = (char *) symtab_section->link->data + p->st_name;
|
---|
| 784 |
|
---|
| 785 | if (p->st_info == 4) {
|
---|
| 786 | // put a filename symbol
|
---|
| 787 | n++;
|
---|
| 788 | } else if (p->st_info == 0x12) {
|
---|
| 789 |
|
---|
| 790 | if (strcmp(func_name, name) == 0)
|
---|
| 791 | return n;
|
---|
| 792 |
|
---|
| 793 | n += 6;
|
---|
| 794 |
|
---|
| 795 | // put a Function Name
|
---|
| 796 |
|
---|
| 797 | // now put aux info
|
---|
| 798 |
|
---|
| 799 | // put a .bf
|
---|
| 800 |
|
---|
| 801 | // now put aux info
|
---|
| 802 |
|
---|
| 803 | // put a .ef
|
---|
| 804 |
|
---|
| 805 | // now put aux info
|
---|
| 806 |
|
---|
| 807 | } else {
|
---|
| 808 | n += 2;
|
---|
| 809 | }
|
---|
| 810 |
|
---|
| 811 | p++;
|
---|
| 812 | }
|
---|
| 813 |
|
---|
| 814 | return n; // total number of symbols
|
---|
| 815 | }
|
---|
| 816 |
|
---|
| 817 | int OutputTheSection(Section * sect)
|
---|
| 818 | {
|
---|
| 819 | const char *s = sect->name;
|
---|
| 820 |
|
---|
| 821 | if (!strcmp(s, ".text"))
|
---|
| 822 | return 1;
|
---|
| 823 | else if (!strcmp(s, ".data"))
|
---|
| 824 | return 1;
|
---|
| 825 | else
|
---|
| 826 | return 0;
|
---|
| 827 | }
|
---|
| 828 |
|
---|
| 829 | short int GetCoffFlags(const char *s)
|
---|
| 830 | {
|
---|
| 831 | if (!strcmp(s, ".text"))
|
---|
| 832 | return STYP_TEXT | STYP_DATA | STYP_ALIGN | 0x400;
|
---|
| 833 | else if (!strcmp(s, ".data"))
|
---|
| 834 | return STYP_DATA;
|
---|
| 835 | else if (!strcmp(s, ".bss"))
|
---|
| 836 | return STYP_BSS;
|
---|
| 837 | else if (!strcmp(s, ".stack"))
|
---|
| 838 | return STYP_BSS | STYP_ALIGN | 0x200;
|
---|
| 839 | else if (!strcmp(s, ".cinit"))
|
---|
| 840 | return STYP_COPY | STYP_DATA | STYP_ALIGN | 0x200;
|
---|
| 841 | else
|
---|
| 842 | return 0;
|
---|
| 843 | }
|
---|
| 844 |
|
---|
| 845 | Section *FindSection(TCCState * s1, const char *sname)
|
---|
| 846 | {
|
---|
| 847 | Section *s;
|
---|
| 848 | int i;
|
---|
| 849 |
|
---|
| 850 | for (i = 1; i < s1->nb_sections; i++) {
|
---|
| 851 | s = s1->sections[i];
|
---|
| 852 |
|
---|
| 853 | if (!strcmp(sname, s->name))
|
---|
| 854 | return s;
|
---|
| 855 | }
|
---|
| 856 |
|
---|
| 857 | tcc_error("could not find section %s", sname);
|
---|
| 858 | return 0;
|
---|
| 859 | }
|
---|
| 860 |
|
---|
| 861 | ST_FUNC int tcc_load_coff(TCCState * s1, int fd)
|
---|
| 862 | {
|
---|
| 863 | // tktk TokenSym *ts;
|
---|
| 864 |
|
---|
| 865 | FILE *f;
|
---|
| 866 | unsigned int str_size;
|
---|
| 867 | char *Coff_str_table, *name;
|
---|
| 868 | int i, k;
|
---|
| 869 | struct syment csym;
|
---|
| 870 | char name2[9];
|
---|
| 871 | FILHDR file_hdr; /* FILE HEADER STRUCTURE */
|
---|
| 872 |
|
---|
| 873 | f = fdopen(fd, "rb");
|
---|
| 874 | if (!f) {
|
---|
| 875 | tcc_error("Unable to open .out file for input");
|
---|
| 876 | }
|
---|
| 877 |
|
---|
| 878 | if (fread(&file_hdr, FILHSZ, 1, f) != 1)
|
---|
| 879 | tcc_error("error reading .out file for input");
|
---|
| 880 |
|
---|
| 881 | if (fread(&o_filehdr, sizeof(o_filehdr), 1, f) != 1)
|
---|
| 882 | tcc_error("error reading .out file for input");
|
---|
| 883 |
|
---|
| 884 | // first read the string table
|
---|
| 885 |
|
---|
| 886 | if (fseek(f, file_hdr.f_symptr + file_hdr.f_nsyms * SYMESZ, SEEK_SET))
|
---|
| 887 | tcc_error("error reading .out file for input");
|
---|
| 888 |
|
---|
| 889 | if (fread(&str_size, sizeof(int), 1, f) != 1)
|
---|
| 890 | tcc_error("error reading .out file for input");
|
---|
| 891 |
|
---|
| 892 |
|
---|
| 893 | Coff_str_table = (char *) tcc_malloc(str_size);
|
---|
| 894 |
|
---|
| 895 | if (fread(Coff_str_table, str_size - 4, 1, f) != 1)
|
---|
| 896 | tcc_error("error reading .out file for input");
|
---|
| 897 |
|
---|
| 898 | // read/process all the symbols
|
---|
| 899 |
|
---|
| 900 | // seek back to symbols
|
---|
| 901 |
|
---|
| 902 | if (fseek(f, file_hdr.f_symptr, SEEK_SET))
|
---|
| 903 | tcc_error("error reading .out file for input");
|
---|
| 904 |
|
---|
| 905 | for (i = 0; i < file_hdr.f_nsyms; i++) {
|
---|
| 906 | if (fread(&csym, SYMESZ, 1, f) != 1)
|
---|
| 907 | tcc_error("error reading .out file for input");
|
---|
| 908 |
|
---|
| 909 | if (csym._n._n_n._n_zeroes == 0) {
|
---|
| 910 | name = Coff_str_table + csym._n._n_n._n_offset - 4;
|
---|
| 911 | } else {
|
---|
| 912 | name = csym._n._n_name;
|
---|
| 913 |
|
---|
| 914 | if (name[7] != 0) {
|
---|
| 915 | for (k = 0; k < 8; k++)
|
---|
| 916 | name2[k] = name[k];
|
---|
| 917 |
|
---|
| 918 | name2[8] = 0;
|
---|
| 919 |
|
---|
| 920 | name = name2;
|
---|
| 921 | }
|
---|
| 922 | }
|
---|
| 923 | // if (strcmp("_DAC_Buffer",name)==0) // tktk
|
---|
| 924 | // name[0]=0;
|
---|
| 925 |
|
---|
| 926 | if (((csym.n_type & 0x30) == 0x20 && csym.n_sclass == 0x2) || ((csym.n_type & 0x30) == 0x30 && csym.n_sclass == 0x2) || (csym.n_type == 0x4 && csym.n_sclass == 0x2) || (csym.n_type == 0x8 && csym.n_sclass == 0x2) || // structures
|
---|
| 927 | (csym.n_type == 0x18 && csym.n_sclass == 0x2) || // pointer to structure
|
---|
| 928 | (csym.n_type == 0x7 && csym.n_sclass == 0x2) || // doubles
|
---|
| 929 | (csym.n_type == 0x6 && csym.n_sclass == 0x2)) // floats
|
---|
| 930 | {
|
---|
| 931 | // strip off any leading underscore (except for other main routine)
|
---|
| 932 |
|
---|
| 933 | if (name[0] == '_' && strcmp(name, "_main") != 0)
|
---|
| 934 | name++;
|
---|
| 935 |
|
---|
| 936 | tcc_add_symbol(s1, name, (void*)(uintptr_t)csym.n_value);
|
---|
| 937 | }
|
---|
| 938 | // skip any aux records
|
---|
| 939 |
|
---|
| 940 | if (csym.n_numaux == 1) {
|
---|
| 941 | if (fread(&csym, SYMESZ, 1, f) != 1)
|
---|
| 942 | tcc_error("error reading .out file for input");
|
---|
| 943 | i++;
|
---|
| 944 | }
|
---|
| 945 | }
|
---|
| 946 |
|
---|
| 947 | return 0;
|
---|
| 948 | }
|
---|