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tinycc/tcccoff.c

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/*
* COFF file handling for TCC
*
* Copyright (c) 2003, 2004 TK
* Copyright (c) 2004 Fabrice Bellard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "tcc.h"
#define MAXNSCNS 255 /* MAXIMUM NUMBER OF SECTIONS */
#define MAX_STR_TABLE 1000000
AOUTHDR o_filehdr; /* OPTIONAL (A.OUT) FILE HEADER */
SCNHDR section_header[MAXNSCNS];
#define MAX_FUNCS 1000
#define MAX_FUNC_NAME_LENGTH 128
int nFuncs;
char Func[MAX_FUNCS][MAX_FUNC_NAME_LENGTH];
char AssociatedFile[MAX_FUNCS][MAX_FUNC_NAME_LENGTH];
int LineNoFilePtr[MAX_FUNCS];
int EndAddress[MAX_FUNCS];
int LastLineNo[MAX_FUNCS];
int FuncEntries[MAX_FUNCS];
int OutputTheSection(Section * sect);
short int GetCoffFlags(const char *s);
void SortSymbolTable(TCCState *S);
Section *FindSection(TCCState * S, const char *sname);
int C67_main_entry_point;
int FindCoffSymbolIndex(TCCState * S, const char *func_name);
int nb_syms;
typedef struct {
long tag;
long size;
long fileptr;
long nextsym;
short int dummy;
} AUXFUNC;
typedef struct {
long regmask;
unsigned short lineno;
unsigned short nentries;
int localframe;
int nextentry;
short int dummy;
} AUXBF;
typedef struct {
long dummy;
unsigned short lineno;
unsigned short dummy1;
int dummy2;
int dummy3;
unsigned short dummy4;
} AUXEF;
ST_FUNC int tcc_output_coff(TCCState *S, FILE *f)
{
Section *tcc_sect;
SCNHDR *coff_sec;
int file_pointer;
char *Coff_str_table, *pCoff_str_table;
int CoffTextSectionNo, coff_nb_syms;
FILHDR file_hdr; /* FILE HEADER STRUCTURE */
Section *stext, *sdata, *sbss;
int i, NSectionsToOutput = 0;
Coff_str_table = pCoff_str_table = NULL;
stext = FindSection(S, ".text");
sdata = FindSection(S, ".data");
sbss = FindSection(S, ".bss");
nb_syms = symtab_section->data_offset / sizeof(Elf32_Sym);
coff_nb_syms = FindCoffSymbolIndex(S, "XXXXXXXXXX1");
file_hdr.f_magic = COFF_C67_MAGIC; /* magic number */
file_hdr.f_timdat = 0; /* time & date stamp */
file_hdr.f_opthdr = sizeof(AOUTHDR); /* sizeof(optional hdr) */
file_hdr.f_flags = 0x1143; /* flags (copied from what code composer does) */
file_hdr.f_TargetID = 0x99; /* for C6x = 0x0099 */
o_filehdr.magic = 0x0108; /* see magic.h */
o_filehdr.vstamp = 0x0190; /* version stamp */
o_filehdr.tsize = stext->data_offset; /* text size in bytes, padded to FW bdry */
o_filehdr.dsize = sdata->data_offset; /* initialized data " " */
o_filehdr.bsize = sbss->data_offset; /* uninitialized data " " */
o_filehdr.entrypt = C67_main_entry_point; /* entry pt. */
o_filehdr.text_start = stext->sh_addr; /* base of text used for this file */
o_filehdr.data_start = sdata->sh_addr; /* base of data used for this file */
// create all the section headers
file_pointer = FILHSZ + sizeof(AOUTHDR);
CoffTextSectionNo = -1;
for (i = 1; i < S->nb_sections; i++) {
coff_sec = &section_header[i];
tcc_sect = S->sections[i];
if (OutputTheSection(tcc_sect)) {
NSectionsToOutput++;
if (CoffTextSectionNo == -1 && tcc_sect == stext)
CoffTextSectionNo = NSectionsToOutput; // rem which coff sect number the .text sect is
strcpy(coff_sec->s_name, tcc_sect->name); /* section name */
coff_sec->s_paddr = tcc_sect->sh_addr; /* physical address */
coff_sec->s_vaddr = tcc_sect->sh_addr; /* virtual address */
coff_sec->s_size = tcc_sect->data_offset; /* section size */
coff_sec->s_scnptr = 0; /* file ptr to raw data for section */
coff_sec->s_relptr = 0; /* file ptr to relocation */
coff_sec->s_lnnoptr = 0; /* file ptr to line numbers */
coff_sec->s_nreloc = 0; /* number of relocation entries */
coff_sec->s_flags = GetCoffFlags(coff_sec->s_name); /* flags */
coff_sec->s_reserved = 0; /* reserved byte */
coff_sec->s_page = 0; /* memory page id */
file_pointer += sizeof(SCNHDR);
}
}
file_hdr.f_nscns = NSectionsToOutput; /* number of sections */
// now loop through and determine file pointer locations
// for the raw data
for (i = 1; i < S->nb_sections; i++) {
coff_sec = &section_header[i];
tcc_sect = S->sections[i];
if (OutputTheSection(tcc_sect)) {
// put raw data
coff_sec->s_scnptr = file_pointer; /* file ptr to raw data for section */
file_pointer += coff_sec->s_size;
}
}
// now loop through and determine file pointer locations
// for the relocation data
for (i = 1; i < S->nb_sections; i++) {
coff_sec = &section_header[i];
tcc_sect = S->sections[i];
if (OutputTheSection(tcc_sect)) {
// put relocations data
if (coff_sec->s_nreloc > 0) {
coff_sec->s_relptr = file_pointer; /* file ptr to relocation */
file_pointer += coff_sec->s_nreloc * sizeof(struct reloc);
}
}
}
// now loop through and determine file pointer locations
// for the line number data
for (i = 1; i < S->nb_sections; i++) {
coff_sec = &section_header[i];
tcc_sect = S->sections[i];
coff_sec->s_nlnno = 0;
coff_sec->s_lnnoptr = 0;
if (S->do_debug && tcc_sect == stext) {
// count how many line nos data
// also find association between source file name and function
// so we can sort the symbol table
Stab_Sym *sym, *sym_end;
char func_name[MAX_FUNC_NAME_LENGTH],
last_func_name[MAX_FUNC_NAME_LENGTH];
unsigned long func_addr, last_pc, pc;
const char *incl_files[INCLUDE_STACK_SIZE];
int incl_index, len, last_line_num;
const char *str, *p;
coff_sec->s_lnnoptr = file_pointer; /* file ptr to linno */
func_name[0] = '\0';
func_addr = 0;
incl_index = 0;
last_func_name[0] = '\0';
last_pc = 0xffffffff;
last_line_num = 1;
sym = (Stab_Sym *) stab_section->data + 1;
sym_end =
(Stab_Sym *) (stab_section->data +
stab_section->data_offset);
nFuncs = 0;
while (sym < sym_end) {
switch (sym->n_type) {
/* function start or end */
case N_FUN:
if (sym->n_strx == 0) {
// end of function
coff_sec->s_nlnno++;
file_pointer += LINESZ;
pc = sym->n_value + func_addr;
func_name[0] = '\0';
func_addr = 0;
EndAddress[nFuncs] = pc;
FuncEntries[nFuncs] =
(file_pointer -
LineNoFilePtr[nFuncs]) / LINESZ - 1;
LastLineNo[nFuncs++] = last_line_num + 1;
} else {
// beginning of function
LineNoFilePtr[nFuncs] = file_pointer;
coff_sec->s_nlnno++;
file_pointer += LINESZ;
str =
(const char *) stabstr_section->data +
sym->n_strx;
p = strchr(str, ':');
if (!p) {
pstrcpy(func_name, sizeof(func_name), str);
pstrcpy(Func[nFuncs], sizeof(func_name), str);
} else {
len = p - str;
if (len > sizeof(func_name) - 1)
len = sizeof(func_name) - 1;
memcpy(func_name, str, len);
memcpy(Func[nFuncs], str, len);
func_name[len] = '\0';
}
// save the file that it came in so we can sort later
pstrcpy(AssociatedFile[nFuncs], sizeof(func_name),
incl_files[incl_index - 1]);
func_addr = sym->n_value;
}
break;
/* line number info */
case N_SLINE:
pc = sym->n_value + func_addr;
last_pc = pc;
last_line_num = sym->n_desc;
/* XXX: slow! */
strcpy(last_func_name, func_name);
coff_sec->s_nlnno++;
file_pointer += LINESZ;
break;
/* include files */
case N_BINCL:
str =
(const char *) stabstr_section->data + sym->n_strx;
add_incl:
if (incl_index < INCLUDE_STACK_SIZE) {
incl_files[incl_index++] = str;
}
break;
case N_EINCL:
if (incl_index > 1)
incl_index--;
break;
case N_SO:
if (sym->n_strx == 0) {
incl_index = 0; /* end of translation unit */
} else {
str =
(const char *) stabstr_section->data +
sym->n_strx;
/* do not add path */
len = strlen(str);
if (len > 0 && str[len - 1] != '/')
goto add_incl;
}
break;
}
sym++;
}
}
}
file_hdr.f_symptr = file_pointer; /* file pointer to symtab */
if (S->do_debug)
file_hdr.f_nsyms = coff_nb_syms; /* number of symtab entries */
else
file_hdr.f_nsyms = 0;
file_pointer += file_hdr.f_nsyms * SYMNMLEN;
// OK now we are all set to write the file
fwrite(&file_hdr, FILHSZ, 1, f);
fwrite(&o_filehdr, sizeof(o_filehdr), 1, f);
// write section headers
for (i = 1; i < S->nb_sections; i++) {
coff_sec = &section_header[i];
tcc_sect = S->sections[i];
if (OutputTheSection(tcc_sect)) {
fwrite(coff_sec, sizeof(SCNHDR), 1, f);
}
}
// write raw data
for (i = 1; i < S->nb_sections; i++) {
coff_sec = &section_header[i];
tcc_sect = S->sections[i];
if (OutputTheSection(tcc_sect)) {
fwrite(tcc_sect->data, tcc_sect->data_offset, 1, f);
}
}
// write relocation data
for (i = 1; i < S->nb_sections; i++) {
coff_sec = &section_header[i];
tcc_sect = S->sections[i];
if (OutputTheSection(tcc_sect)) {
// put relocations data
if (coff_sec->s_nreloc > 0) {
fwrite(tcc_sect->reloc,
coff_sec->s_nreloc * sizeof(struct reloc), 1, f);
}
}
}
// group the symbols in order of filename, func1, func2, etc
// finally global symbols
if (S->do_debug)
SortSymbolTable(S);
// write line no data
for (i = 1; i < S->nb_sections; i++) {
coff_sec = &section_header[i];
tcc_sect = S->sections[i];
if (S->do_debug && tcc_sect == stext) {
// count how many line nos data
Stab_Sym *sym, *sym_end;
char func_name[128], last_func_name[128];
unsigned long func_addr, last_pc, pc;
const char *incl_files[INCLUDE_STACK_SIZE];
int incl_index, len, last_line_num;
const char *str, *p;
LINENO CoffLineNo;
func_name[0] = '\0';
func_addr = 0;
incl_index = 0;
last_func_name[0] = '\0';
last_pc = 0;
last_line_num = 1;
sym = (Stab_Sym *) stab_section->data + 1;
sym_end =
(Stab_Sym *) (stab_section->data +
stab_section->data_offset);
while (sym < sym_end) {
switch (sym->n_type) {
/* function start or end */
case N_FUN:
if (sym->n_strx == 0) {
// end of function
CoffLineNo.l_addr.l_paddr = last_pc;
CoffLineNo.l_lnno = last_line_num + 1;
fwrite(&CoffLineNo, 6, 1, f);
pc = sym->n_value + func_addr;
func_name[0] = '\0';
func_addr = 0;
} else {
// beginning of function
str =
(const char *) stabstr_section->data +
sym->n_strx;
p = strchr(str, ':');
if (!p) {
pstrcpy(func_name, sizeof(func_name), str);
} else {
len = p - str;
if (len > sizeof(func_name) - 1)
len = sizeof(func_name) - 1;
memcpy(func_name, str, len);
func_name[len] = '\0';
}
func_addr = sym->n_value;
last_pc = func_addr;
last_line_num = -1;
// output a function begin
CoffLineNo.l_addr.l_symndx =
FindCoffSymbolIndex(S, func_name);
CoffLineNo.l_lnno = 0;
fwrite(&CoffLineNo, 6, 1, f);
}
break;
/* line number info */
case N_SLINE:
pc = sym->n_value + func_addr;
/* XXX: slow! */
strcpy(last_func_name, func_name);
// output a line reference
CoffLineNo.l_addr.l_paddr = last_pc;
if (last_line_num == -1) {
CoffLineNo.l_lnno = sym->n_desc;
} else {
CoffLineNo.l_lnno = last_line_num + 1;
}
fwrite(&CoffLineNo, 6, 1, f);
last_pc = pc;
last_line_num = sym->n_desc;
break;
/* include files */
case N_BINCL:
str =
(const char *) stabstr_section->data + sym->n_strx;
add_incl2:
if (incl_index < INCLUDE_STACK_SIZE) {
incl_files[incl_index++] = str;
}
break;
case N_EINCL:
if (incl_index > 1)
incl_index--;
break;
case N_SO:
if (sym->n_strx == 0) {
incl_index = 0; /* end of translation unit */
} else {
str =
(const char *) stabstr_section->data +
sym->n_strx;
/* do not add path */
len = strlen(str);
if (len > 0 && str[len - 1] != '/')
goto add_incl2;
}
break;
}
sym++;
}
}
}
// write symbol table
if (S->do_debug) {
int k;
struct syment csym;
AUXFUNC auxfunc;
AUXBF auxbf;
AUXEF auxef;
int i;
Elf32_Sym *p;
const char *name;
int nstr;
int n = 0;
Coff_str_table = (char *) tcc_malloc(S, MAX_STR_TABLE);
pCoff_str_table = Coff_str_table;
nstr = 0;
p = (Elf32_Sym *) symtab_section->data;
for (i = 0; i < nb_syms; i++) {
name = symtab_section->link->data + p->st_name;
for (k = 0; k < 8; k++)
csym._n._n_name[k] = 0;
if (strlen(name) <= 8) {
strcpy(csym._n._n_name, name);
} else {
if (pCoff_str_table - Coff_str_table + strlen(name) >
MAX_STR_TABLE - 1)
tcc_error(S, "String table too large");
csym._n._n_n._n_zeroes = 0;
csym._n._n_n._n_offset =
pCoff_str_table - Coff_str_table + 4;
strcpy(pCoff_str_table, name);
pCoff_str_table += strlen(name) + 1; // skip over null
nstr++;
}
if (p->st_info == 4) {
// put a filename symbol
csym.n_value = 33; // ?????
csym.n_scnum = N_DEBUG;
csym.n_type = 0;
csym.n_sclass = C_FILE;
csym.n_numaux = 0;
fwrite(&csym, 18, 1, f);
n++;
} else if (p->st_info == 0x12) {
// find the function data
for (k = 0; k < nFuncs; k++) {
if (strcmp(name, Func[k]) == 0)
break;
}
if (k >= nFuncs) {
tcc_error(S, "debug info can't find function: %s", name);
}
// put a Function Name
csym.n_value = p->st_value; // physical address
csym.n_scnum = CoffTextSectionNo;
csym.n_type = MKTYPE(T_INT, DT_FCN, 0, 0, 0, 0, 0);
csym.n_sclass = C_EXT;
csym.n_numaux = 1;
fwrite(&csym, 18, 1, f);
// now put aux info
auxfunc.tag = 0;
auxfunc.size = EndAddress[k] - p->st_value;
auxfunc.fileptr = LineNoFilePtr[k];
auxfunc.nextsym = n + 6; // tktk
auxfunc.dummy = 0;
fwrite(&auxfunc, 18, 1, f);
// put a .bf
strcpy(csym._n._n_name, ".bf");
csym.n_value = p->st_value; // physical address
csym.n_scnum = CoffTextSectionNo;
csym.n_type = 0;
csym.n_sclass = C_FCN;
csym.n_numaux = 1;
fwrite(&csym, 18, 1, f);
// now put aux info
auxbf.regmask = 0;
auxbf.lineno = 0;
auxbf.nentries = FuncEntries[k];
auxbf.localframe = 0;
auxbf.nextentry = n + 6;
auxbf.dummy = 0;
fwrite(&auxbf, 18, 1, f);
// put a .ef
strcpy(csym._n._n_name, ".ef");
csym.n_value = EndAddress[k]; // physical address
csym.n_scnum = CoffTextSectionNo;
csym.n_type = 0;
csym.n_sclass = C_FCN;
csym.n_numaux = 1;
fwrite(&csym, 18, 1, f);
// now put aux info
auxef.dummy = 0;
auxef.lineno = LastLineNo[k];
auxef.dummy1 = 0;
auxef.dummy2 = 0;
auxef.dummy3 = 0;
auxef.dummy4 = 0;
fwrite(&auxef, 18, 1, f);
n += 6;
} else {
// try an put some type info
if ((p->st_other & VT_BTYPE) == VT_DOUBLE) {
csym.n_type = T_DOUBLE; // int
csym.n_sclass = C_EXT;
} else if ((p->st_other & VT_BTYPE) == VT_FLOAT) {
csym.n_type = T_FLOAT;
csym.n_sclass = C_EXT;
} else if ((p->st_other & VT_BTYPE) == VT_INT) {
csym.n_type = T_INT; // int
csym.n_sclass = C_EXT;
} else if ((p->st_other & VT_BTYPE) == VT_SHORT) {
csym.n_type = T_SHORT;
csym.n_sclass = C_EXT;
} else if ((p->st_other & VT_BTYPE) == VT_BYTE) {
csym.n_type = T_CHAR;
csym.n_sclass = C_EXT;
} else {
csym.n_type = T_INT; // just mark as a label
csym.n_sclass = C_LABEL;
}
csym.n_value = p->st_value;
csym.n_scnum = 2;
csym.n_numaux = 1;
fwrite(&csym, 18, 1, f);
auxfunc.tag = 0;
auxfunc.size = 0x20;
auxfunc.fileptr = 0;
auxfunc.nextsym = 0;
auxfunc.dummy = 0;
fwrite(&auxfunc, 18, 1, f);
n++;
n++;
}
p++;
}
}
if (S->do_debug) {
// write string table
// first write the size
i = pCoff_str_table - Coff_str_table;
fwrite(&i, 4, 1, f);
// then write the strings
fwrite(Coff_str_table, i, 1, f);
tcc_free(S, Coff_str_table);
}
return 0;
}
// group the symbols in order of filename, func1, func2, etc
// finally global symbols
void SortSymbolTable(TCCState *S)
{
int i, j, k, n = 0;
Elf32_Sym *p, *p2, *NewTable;
char *name, *name2;
NewTable = (Elf32_Sym *) tcc_malloc(S, nb_syms * sizeof(Elf32_Sym));
p = (Elf32_Sym *) symtab_section->data;
// find a file symbol, copy it over
// then scan the whole symbol list and copy any function
// symbols that match the file association
for (i = 0; i < nb_syms; i++) {
if (p->st_info == 4) {
name = (char *) symtab_section->link->data + p->st_name;
// this is a file symbol, copy it over
NewTable[n++] = *p;
p2 = (Elf32_Sym *) symtab_section->data;
for (j = 0; j < nb_syms; j++) {
if (p2->st_info == 0x12) {
// this is a func symbol
name2 =
(char *) symtab_section->link->data + p2->st_name;
// find the function data index
for (k = 0; k < nFuncs; k++) {
if (strcmp(name2, Func[k]) == 0)
break;
}
if (k >= nFuncs) {
tcc_error(S, "debug (sort) info can't find function: %s", name2);
}
if (strcmp(AssociatedFile[k], name) == 0) {
// yes they match copy it over
NewTable[n++] = *p2;
}
}
p2++;
}
}
p++;
}
// now all the filename and func symbols should have been copied over
// copy all the rest over (all except file and funcs)
p = (Elf32_Sym *) symtab_section->data;
for (i = 0; i < nb_syms; i++) {
if (p->st_info != 4 && p->st_info != 0x12) {
NewTable[n++] = *p;
}
p++;
}
if (n != nb_syms)
tcc_error(S, "Internal Compiler error, debug info");
// copy it all back
p = (Elf32_Sym *) symtab_section->data;
for (i = 0; i < nb_syms; i++) {
*p++ = NewTable[i];
}
tcc_free(S, NewTable);
}
int FindCoffSymbolIndex(TCCState *S, const char *func_name)
{
int i, n = 0;
Elf32_Sym *p;
char *name;
p = (Elf32_Sym *) symtab_section->data;
for (i = 0; i < nb_syms; i++) {
name = (char *) symtab_section->link->data + p->st_name;
if (p->st_info == 4) {
// put a filename symbol
n++;
} else if (p->st_info == 0x12) {
if (strcmp(func_name, name) == 0)
return n;
n += 6;
// put a Function Name
// now put aux info
// put a .bf
// now put aux info
// put a .ef
// now put aux info
} else {
n += 2;
}
p++;
}
return n; // total number of symbols
}
int OutputTheSection(Section * sect)
{
const char *s = sect->name;
if (!strcmp(s, ".text"))
return 1;
else if (!strcmp(s, ".data"))
return 1;
else
return 0;
}
short int GetCoffFlags(const char *s)
{
if (!strcmp(s, ".text"))
return STYP_TEXT | STYP_DATA | STYP_ALIGN | 0x400;
else if (!strcmp(s, ".data"))
return STYP_DATA;
else if (!strcmp(s, ".bss"))
return STYP_BSS;
else if (!strcmp(s, ".stack"))
return STYP_BSS | STYP_ALIGN | 0x200;
else if (!strcmp(s, ".cinit"))
return STYP_COPY | STYP_DATA | STYP_ALIGN | 0x200;
else
return 0;
}
Section *FindSection(TCCState * S, const char *sname)
{
Section *s;
int i;
for (i = 1; i < S->nb_sections; i++) {
s = S->sections[i];
if (!strcmp(sname, s->name))
return s;
}
tcc_error(S, "could not find section %s", sname);
return 0;
}
ST_FUNC int tcc_load_coff(TCCState * S, int fd)
{
// tktk TokenSym *ts;
FILE *f;
unsigned int str_size;
char *Coff_str_table, *name;
int i, k;
struct syment csym;
char name2[9];
FILHDR file_hdr; /* FILE HEADER STRUCTURE */
f = fdopen(fd, "rb");
if (!f) {
tcc_error(S, "Unable to open .out file for input");
}
if (fread(&file_hdr, FILHSZ, 1, f) != 1)
tcc_error(S, "error reading .out file for input");
if (fread(&o_filehdr, sizeof(o_filehdr), 1, f) != 1)
tcc_error(S, "error reading .out file for input");
// first read the string table
if (fseek(f, file_hdr.f_symptr + file_hdr.f_nsyms * SYMESZ, SEEK_SET))
tcc_error(S, "error reading .out file for input");
if (fread(&str_size, sizeof(int), 1, f) != 1)
tcc_error(S, "error reading .out file for input");
Coff_str_table = (char *) tcc_malloc(S, str_size);
if (fread(Coff_str_table, str_size - 4, 1, f) != 1)
tcc_error(S, "error reading .out file for input");
// read/process all the symbols
// seek back to symbols
if (fseek(f, file_hdr.f_symptr, SEEK_SET))
tcc_error(S, "error reading .out file for input");
for (i = 0; i < file_hdr.f_nsyms; i++) {
if (fread(&csym, SYMESZ, 1, f) != 1)
tcc_error(S, "error reading .out file for input");
if (csym._n._n_n._n_zeroes == 0) {
name = Coff_str_table + csym._n._n_n._n_offset - 4;
} else {
name = csym._n._n_name;
if (name[7] != 0) {
for (k = 0; k < 8; k++)
name2[k] = name[k];
name2[8] = 0;
name = name2;
}
}
// if (strcmp("_DAC_Buffer",name)==0) // tktk
// name[0]=0;
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
(csym.n_type == 0x18 && csym.n_sclass == 0x2) || // pointer to structure
(csym.n_type == 0x7 && csym.n_sclass == 0x2) || // doubles
(csym.n_type == 0x6 && csym.n_sclass == 0x2)) // floats
{
// strip off any leading underscore (except for other main routine)
if (name[0] == '_' && strcmp(name, "_main") != 0)
name++;
tcc_add_symbol(S, name, (void*)(uintptr_t)csym.n_value);
}
// skip any aux records
if (csym.n_numaux == 1) {
if (fread(&csym, SYMESZ, 1, f) != 1)
tcc_error(S, "error reading .out file for input");
i++;
}
}
return 0;
}
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