diff options
Diffstat (limited to 'bfd/srec.c')
| -rw-r--r-- | bfd/srec.c | 601 |
1 files changed, 475 insertions, 126 deletions
@@ -1,5 +1,5 @@ /* BFD back-end for s-record objects. - Copyright 1990, 1991, 1992 Free Software Foundation, Inc. + Copyright 1990, 1991, 1992, 1993 Free Software Foundation, Inc. Written by Steve Chamberlain of Cygnus Support <sac@cygnus.com>. This file is part of BFD, the Binary File Descriptor library. @@ -20,14 +20,14 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* SUBSECTION - S-record handling + S-Record handling DESCRIPTION - S-records cannot hold anything but addresses and data, so - that's all that we implement. + Ordinary S-Records cannot hold anything but addresses and + data, so that's all that we implement. - The only interesting thing is that s-records may come out of + The only interesting thing is that S-Records may come out of order and there is no header, so an initial scan is required to discover the minimum and maximum addresses used to create the vma and size of the only section we create. We @@ -69,7 +69,38 @@ DESCRIPTION o checksum is the sum of all the raw byte data in the record, from the length upwards, modulo 256 and subtracted from 255. - + + +SUBSECTION + Symbol S-Record handling + +DESCRIPTION + Some ICE equipment understands an addition to the standard + S-Record format; symbols and their addresses can be sent + before the data. + + The format of this is: + ($$ <modulename> + (<space> <symbol> <address>)*) + $$ + + so a short symbol table could look like: + +EXAMPLE + $$ flash.x + $$ flash.c + _port6 $0 + _delay $4 + _start $14 + _etext $8036 + _edata $8036 + _end $8036 + $$ + +DESCRIPTION + We allow symbols to be anywhere in the data stream - the module names + are always ignored. + */ #include "bfd.h" @@ -137,6 +168,7 @@ struct srec_data_list_struct bfd_vma where; bfd_size_type size; struct srec_data_list_struct *next; + } ; typedef struct srec_data_list_struct srec_data_list_type; @@ -146,19 +178,64 @@ typedef struct srec_data_struct { srec_data_list_type *head; unsigned int type; - + + int done_symbol_read; + int count; + asymbol *symbols; + char *strings; + int symbol_idx; + int string_size; + int string_idx; } tdata_type; - -#define enda(x) (x->vma + x->size) /* - called once per input s-record, used to work out vma and size of data. + called once per input S-Record, used to work out vma and size of data. */ static bfd_vma low,high; static void +size_symbols(abfd, buf, len, val) +bfd *abfd; +char *buf; +int len; +int val; +{ + abfd->symcount ++; + abfd->tdata.srec_data->string_size += len + 1; +} + +static void +fillup_symbols(abfd, buf, len, val) +bfd *abfd; +char *buf; +int len; +int val; +{ + if (!abfd->tdata.srec_data->done_symbol_read) + { + asymbol *p; + if (abfd->tdata.srec_data->symbols == 0) + { + abfd->tdata.srec_data->symbols = (asymbol *)bfd_alloc(abfd, abfd->symcount * sizeof(asymbol)); + abfd->tdata.srec_data->strings = (char*)bfd_alloc(abfd, abfd->tdata.srec_data->string_size); + abfd->tdata.srec_data->symbol_idx = 0; + abfd->tdata.srec_data->string_idx = 0; + } + + p = abfd->tdata.srec_data->symbols + abfd->tdata.srec_data->symbol_idx++; + p->the_bfd = abfd; + p->name = abfd->tdata.srec_data->strings + abfd->tdata.srec_data->string_idx; + memcpy((char *)(p->name), buf, len+1); + abfd->tdata.srec_data->string_idx += len + 1; + p->value = val; + p->flags = BSF_EXPORT | BSF_GLOBAL; + p->section = &bfd_abs_section; + p->udata = 0; + } +} +static void DEFUN(size_srec,(abfd, section, address, raw, length), bfd *abfd AND asection *section AND @@ -174,7 +251,7 @@ DEFUN(size_srec,(abfd, section, address, raw, length), /* - called once per input s-record, copies data from input into bfd_alloc'd area + called once per input S-Record, copies data from input into bfd_alloc'd area */ static void @@ -187,8 +264,7 @@ unsigned int length) { unsigned int i; bfd_byte *dst = - (bfd_byte *)(section->used_by_bfd) + - address - section->vma; + (bfd_byte *)(section->used_by_bfd) + address - section->vma; /* length -1 because we don't read in the checksum */ for (i = 0; i < length -1 ; i++) { *dst = HEX(raw); @@ -197,110 +273,229 @@ unsigned int length) } } -/* Pass over an s-record file, calling one of the above functions on each +/* Pass over an S-Record file, calling one of the above functions on each record. */ +static int white(x) +char x; +{ +return (x== ' ' || x == '\t' || x == '\n' || x == '\r'); +} +static int +skipwhite(src,abfd) +char *src; +bfd *abfd; +{ + int eof = 0; + while (white(*src) && !eof) + { + eof = (boolean)(bfd_read(src, 1, 1, abfd) != 1); + } + return eof; +} + +static boolean +DEFUN(srec_mkobject, (abfd), + bfd *abfd) +{ + if (abfd->tdata.srec_data == 0) + { + tdata_type *tdata = (tdata_type *)bfd_alloc(abfd, sizeof(tdata_type)); + abfd->tdata.srec_data = tdata; + tdata->type = 1; + tdata->head = (srec_data_list_type *)NULL; + } + return true; + +} + static void -DEFUN(pass_over,(abfd, func, section), +DEFUN(pass_over,(abfd, func, symbolfunc, section), bfd *abfd AND void (*func)() AND + void (*symbolfunc)() AND asection *section) { - unsigned int bytes_on_line; - boolean eof = false; + unsigned int bytes_on_line; + boolean eof = false; - /* To the front of the file */ - bfd_seek(abfd, (file_ptr)0, SEEK_SET); - while (eof == false) + srec_mkobject(abfd); + /* To the front of the file */ + bfd_seek(abfd, (file_ptr)0, SEEK_SET); + while (eof == false) + { + char buffer[MAXCHUNK]; + char *src = buffer; + char type; + bfd_vma address = 0; + + /* Find first 'S' or $ */ + eof = (boolean)(bfd_read(src, 1, 1, abfd) != 1); + switch (*src) { - char buffer[MAXCHUNK]; - char *src = buffer; - char type; - bfd_vma address = 0; - - /* Find first 'S' */ - eof = (boolean)(bfd_read(src, 1, 1, abfd) != 1); - while (*src!= 'S' && !eof) { - eof = (boolean)(bfd_read(src, 1, 1, abfd) != 1); - } - if (eof) break; - src++; - - /* Fetch the type and the length */ - bfd_read(src, 1, 3, abfd); - - type = *src++; - - if (!ISHEX (src[0]) || !ISHEX (src[1])) - break; - - bytes_on_line = HEX(src); - - if (bytes_on_line > MAXCHUNK/2) - break; - src+=2 ; - - bfd_read(src, 1 , bytes_on_line * 2, abfd); - - switch (type) { - case '0': - case '5': - /* Prologue - ignore */ - break; - case '3': - address = HEX(src); - src+=2; - bytes_on_line--; + default: + eof = (boolean)(bfd_read(src, 1, 1, abfd) != 1); + if (eof) return; + break; + + case '$': + /* Inside a symbol definition - just ignore the module name */ + while (*src != '\n' && !eof) + { + eof = (boolean)(bfd_read(src, 1, 1, abfd) != 1); + } + break; + + case ' ': + /* spaces - maybe just before a symbol */ + while (*src != '\n' && white(*src)) { + eof = skipwhite(src, abfd); + +{ + int val = 0; + int slen = 0; + char symbol[MAXCHUNK]; + + /* get the symbol part */ + while (!eof && !white(*src) && slen < MAXCHUNK) + { + symbol[slen++] = *src; + eof = (boolean)(bfd_read(src, 1, 1, abfd) != 1); + } + symbol[slen] = 0; + eof = skipwhite(src, abfd); + /* skip the $ for the hex value */ + if (*src == '$') + { + eof = (boolean)(bfd_read(src, 1, 1, abfd) != 1); + } + + /* Scan off the hex number */ + while (isxdigit(*src )) + { + val *= 16; + if (isdigit(*src)) + val += *src - '0'; + else if (isupper(*src)) { + val += *src - 'A' + 10; + } + else { + val += *src - 'a' + 10; + } + eof = (boolean)(bfd_read(src, 1, 1, abfd) != 1); + } + symbolfunc(abfd, symbol, slen, val); + } +} + break; + case 'S': + src++; + + /* Fetch the type and the length */ + bfd_read(src, 1, 3, abfd); + + type = *src++; + + if (!ISHEX (src[0]) || !ISHEX (src[1])) + break; + + bytes_on_line = HEX(src); + + if (bytes_on_line > MAXCHUNK/2) + break; + src+=2 ; + + bfd_read(src, 1 , bytes_on_line * 2, abfd); + + switch (type) { + case '0': + case '5': + /* Prologue - ignore */ + break; + case '3': + address = HEX(src); + src+=2; + bytes_on_line--; - case '2': - address = HEX(src) | (address<<8) ; - src+=2; - bytes_on_line--; - case '1': - address = HEX(src) | (address<<8) ; - src+=2; - address = HEX(src) | (address<<8) ; - src+=2; - bytes_on_line-=2; - func(abfd,section, address, src, bytes_on_line); - break; - default: - return; - } + case '2': + address = HEX(src) | (address<<8) ; + src+=2; + bytes_on_line--; + case '1': + address = HEX(src) | (address<<8) ; + src+=2; + address = HEX(src) | (address<<8) ; + src+=2; + bytes_on_line-=2; + func(abfd,section, address, src, bytes_on_line); + break; + default: + return; + } } + } } +static bfd_target * +object_p(abfd) +bfd *abfd; +{ + asection *section; + /* We create one section called .text for all the contents, + and allocate enough room for the entire file. */ + + section = bfd_make_section(abfd, ".text"); + section->_raw_size = 0; + section->vma = 0xffffffff; + low = 0xffffffff; + high = 0; + pass_over(abfd, size_srec, size_symbols, section); + section->_raw_size = high - low; + section->vma = low; + section->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC; + if (abfd->symcount) + abfd->flags |= HAS_SYMS; + return abfd->xvec; +} static bfd_target * DEFUN(srec_object_p, (abfd), bfd *abfd) { char b[4]; - asection *section; + srec_init(); bfd_seek(abfd, (file_ptr)0, SEEK_SET); bfd_read(b, 1, 4, abfd); if (b[0] != 'S' || !ISHEX(b[1]) || !ISHEX(b[2]) || !ISHEX(b[3])) - return (bfd_target*) NULL; + return (bfd_target*) NULL; /* We create one section called .text for all the contents, and allocate enough room for the entire file. */ - section = bfd_make_section(abfd, ".text"); - section->_raw_size = 0; - section->vma = 0xffffffff; - low = 0xffffffff; - high = 0; - pass_over(abfd, size_srec, section); - section->_raw_size = high - low; - section->vma = low; - section->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC; + return object_p(abfd); +} + + +static bfd_target * +DEFUN(symbolsrec_object_p, (abfd), + bfd *abfd) +{ + char b[4]; + + srec_init(); - return abfd->xvec; + bfd_seek(abfd, (file_ptr)0, SEEK_SET); + bfd_read(b, 1, 4, abfd); + + if (b[0] != '$' || b[1] != '$') + return (bfd_target*) NULL; + + return object_p(abfd); } @@ -315,7 +510,8 @@ DEFUN(srec_get_section_contents,(abfd, section, location, offset, count), if (section->used_by_bfd == (PTR)NULL) { section->used_by_bfd = (PTR)bfd_alloc (abfd, section->_raw_size); - pass_over(abfd, fillup, section); + + pass_over(abfd, fillup, fillup_symbols, section); } (void) memcpy((PTR)location, (PTR)((char *)(section->used_by_bfd) + offset), @@ -348,33 +544,34 @@ DEFUN(srec_set_section_contents,(abfd, section, location, offset, bytes_to_do), { tdata_type *tdata = abfd->tdata.srec_data; srec_data_list_type *entry = (srec_data_list_type *) - bfd_alloc(abfd, sizeof(srec_data_list_type)); + bfd_alloc(abfd, sizeof(srec_data_list_type)); + if ((section->flags & SEC_ALLOC) && (section->flags & SEC_LOAD)) - { - unsigned char *data = (unsigned char *) bfd_alloc(abfd, bytes_to_do); - memcpy(data, location, bytes_to_do); - - if ((section->vma + offset + bytes_to_do) <= 0xffff) { + unsigned char *data = (unsigned char *) bfd_alloc(abfd, bytes_to_do); + memcpy(data, location, bytes_to_do); - } - else if ((section->vma + offset + bytes_to_do) <= 0xffffff - && tdata->type < 2) - { - tdata->type = 2; - } - else - { - tdata->type = 3; - } + if ((section->lma + offset + bytes_to_do) <= 0xffff) + { - entry->data = data; - entry->where = section->vma + offset; - entry->size = bytes_to_do; - entry->next = tdata->head; - tdata->head = entry; - } + } + else if ((section->lma + offset + bytes_to_do) <= 0xffffff + && tdata->type < 2) + { + tdata->type = 2; + } + else + { + tdata->type = 3; + } + + entry->data = data; + entry->where = section->lma + offset; + entry->size = bytes_to_do; + entry->next = tdata->head; + tdata->head = entry; + } return true; } @@ -506,33 +703,77 @@ DEFUN(srec_write_terminator,(abfd, tdata), abfd->start_address, buffer, buffer); } -static boolean -DEFUN(srec_mkobject, (abfd), - bfd *abfd) + + +static void +srec_write_symbols(abfd) +bfd *abfd; { - tdata_type *tdata = (tdata_type *)bfd_alloc(abfd, sizeof(tdata_type)); - abfd->tdata.srec_data = tdata; - tdata->type = 1; - tdata->head = (srec_data_list_type *)NULL; - return true; - + char buffer[MAXCHUNK]; + /* Dump out the symbols of a bfd */ + int i; + int len = bfd_get_symcount(abfd); + + if (len) + { + asymbol **table = bfd_get_outsymbols(abfd); + sprintf(buffer, "$$ %s\r\n", abfd->filename); + + bfd_write(buffer, strlen(buffer), 1, abfd); + + for (i = 0; i < len; i++) + { + asymbol *s = table[i]; +#if 0 + int len = strlen(s->name); + + /* If this symbol has a .[ocs] in it, it's probably a file name + and we'll output that as the module name */ + + if (len > 3 && s->name[len-2] == '.') + { + int l; + sprintf(buffer, "$$ %s\n\r", s->name); + l = strlen(buffer); + bfd_write(buffer, l, 1, abfd); + } + else +#endif + if (s->flags & (BSF_GLOBAL | BSF_LOCAL) + && (s->flags & BSF_DEBUGGING) == 0 + && s->name[0] != '.' + && s->name[0] != 't') + { + /* Just dump out non debug symbols */ + + int l; + sprintf(buffer," %s $%x\n\r", s->name, s->value + s->section->lma); + l = strlen(buffer); + bfd_write(buffer, l, 1,abfd); + } + } + sprintf(buffer, "$$ \r\n"); + bfd_write(buffer, strlen(buffer), 1, abfd); + } } - static boolean -DEFUN(srec_write_object_contents,(abfd), - bfd *abfd) +internal_srec_write_object_contents(abfd, symbols) + bfd *abfd; + int symbols; { int bytes_written; tdata_type *tdata = abfd->tdata.srec_data; srec_data_list_type *list; bytes_written = 0; - - - srec_write_header(abfd); + if (symbols) + srec_write_symbols(abfd); + + srec_write_header(abfd); + /* Now wander though all the sections provided and output them */ list = tdata->head; @@ -545,6 +786,20 @@ DEFUN(srec_write_object_contents,(abfd), return true; } +static boolean +srec_write_object_contents(abfd) + bfd *abfd; +{ + return internal_srec_write_object_contents(abfd, 0); +} + +static boolean +symbolsrec_write_object_contents(abfd) + bfd *abfd; +{ + return internal_srec_write_object_contents(abfd, 1); +} + static int DEFUN(srec_sizeof_headers,(abfd, exec), bfd *abfd AND @@ -561,14 +816,60 @@ DEFUN(srec_make_empty_symbol, (abfd), new->the_bfd = abfd; return new; } + +static unsigned int +srec_get_symtab_upper_bound(abfd) +bfd *abfd; +{ + /* Read in all the info */ + srec_get_section_contents(abfd,abfd->sections,0,0,0); + return (bfd_get_symcount(abfd) + 1) * (sizeof(asymbol *)); +} + +static unsigned int +DEFUN(srec_get_symtab, (abfd, alocation), + bfd *abfd AND + asymbol **alocation) +{ + int lim = abfd->symcount; + int i; + for (i = 0; i < lim; i++) { + alocation[i] = abfd->tdata.srec_data->symbols + i; + } + alocation[i] = 0; + return lim; +} + +void +DEFUN(srec_print_symbol,(ignore_abfd, afile, symbol, how), + bfd *ignore_abfd AND + PTR afile AND + asymbol *symbol AND + bfd_print_symbol_type how) +{ + FILE *file = (FILE *)afile; + switch (how) + { + case bfd_print_symbol_name: + fprintf (file, "%s", symbol->name); + break; + default: + case bfd_print_symbol_nm: + bfd_print_symbol_vandf ((PTR) file, symbol); + fprintf (file, " %-5s %s", + symbol->section->name, + symbol->name); + + } +} + #define FOO PROTO #define srec_new_section_hook (FOO(boolean, (*), (bfd *, asection *)))bfd_true -#define srec_get_symtab_upper_bound (PROTO(unsigned int, (*),(bfd *)))bfd_false -#define srec_get_symtab (FOO(unsigned int, (*), (bfd *, asymbol **)))bfd_0 + #define srec_get_reloc_upper_bound (FOO(unsigned int, (*),(bfd*, asection *)))bfd_false #define srec_canonicalize_reloc (FOO(unsigned int, (*),(bfd*,asection *, arelent **, asymbol **))) bfd_0 -#define srec_print_symbol (FOO(void,(*),(bfd *, PTR, asymbol *, bfd_print_symbol_type))) bfd_void + #define srec_openr_next_archived_file (FOO(bfd *, (*), (bfd*,bfd*))) bfd_nullvoidptr #define srec_find_nearest_line (FOO(boolean, (*),(bfd*,asection*,asymbol**,bfd_vma, CONST char**, CONST char**, unsigned int *))) bfd_false @@ -590,6 +891,10 @@ DEFUN(srec_make_empty_symbol, (abfd), #define srec_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents #define srec_bfd_relax_section bfd_generic_relax_section #define srec_bfd_seclet_link bfd_generic_seclet_link +#define srec_bfd_reloc_type_lookup \ + ((CONST struct reloc_howto_struct *(*) PARAMS ((bfd *, bfd_reloc_code_real_type))) bfd_nullvoidptr) +#define srec_bfd_make_debug_symbol \ + ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr) bfd_target srec_vec = { @@ -632,3 +937,47 @@ bfd_target srec_vec = JUMP_TABLE(srec) }; + + +bfd_target symbolsrec_vec = +{ + "symbolsrec", /* name */ + bfd_target_srec_flavour, + true, /* target byte order */ + true, /* target headers byte order */ + (HAS_RELOC | EXEC_P | /* object flags */ + HAS_LINENO | HAS_DEBUG | + HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED), + (SEC_CODE|SEC_DATA|SEC_ROM|SEC_HAS_CONTENTS + |SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ + 0, /* leading underscore */ + ' ', /* ar_pad_char */ + 16, /* ar_max_namelen */ + 1, /* minimum alignment */ + _do_getb64, _do_putb64, _do_getb32, + _do_putb32, _do_getb16, _do_putb16, /* data */ + _do_getb64, _do_putb64, _do_getb32, + _do_putb32, _do_getb16, _do_putb16, /* hdrs */ + + { + _bfd_dummy_target, + symbolsrec_object_p, /* bfd_check_format */ + (struct bfd_target *(*)()) bfd_nullvoidptr, + (struct bfd_target *(*)()) bfd_nullvoidptr, + }, + { + bfd_false, + srec_mkobject, + _bfd_generic_mkarchive, + bfd_false, + }, + { /* bfd_write_contents */ + bfd_false, + symbolsrec_write_object_contents, + _bfd_write_archive_contents, + bfd_false, + }, + JUMP_TABLE(srec), + (PTR) 0 + }; + |