#include <ctype.h>
#include <sys/types.h>
#include <sys/stat.h>
+#include <sys/file.h>
#include <assert.h>
#include <getopt.h>
-#include <bfd.h>
+#include "bfd.h"
+#include "libiberty.h"
#include "sysdep.h"
#include "bucomm.h"
/* Internal BFD NLM header. */
#include "libnlm.h"
#include "nlmconv.h"
+#ifdef NLMCONV_ALPHA
+#include "coff/sym.h"
+#include "coff/ecoff.h"
+#endif
+
/* If strerror is just a macro, we want to use the one from libiberty
since it will handle undefined values. */
#undef strerror
extern struct tm *localtime ();
#endif
+#ifndef getenv
+extern char *getenv ();
+#endif
+
#ifndef SEEK_SET
#define SEEK_SET 0
#endif
+
+#ifndef R_OK
+#define R_OK 4
+#define W_OK 2
+#define X_OK 1
+#endif
\f
/* Global variables. */
/* Local variables. */
+/* Whether to print out debugging information (currently just controls
+ whether it prints the linker command if there is one). */
+static int debug;
+
/* The symbol table. */
static asymbol **symbols;
+/* A section we create in the output file to hold pointers to where
+ the sections of the input file end up. We will put a pointer to
+ this section in the NLM header. These is an entry for each input
+ section. The format is
+ null terminated section name
+ zeroes to adjust to 4 byte boundary
+ 4 byte section data file pointer
+ 4 byte section size
+ We don't need a version number. The way we find this information
+ is by finding a stamp in the NLM header information. If we need to
+ change the format of this information, we can simply change the
+ stamp. */
+static asection *secsec;
+
+/* A temporary file name to be unlinked on exit. Actually, for most
+ errors, we leave it around. It's not clear whether that is helpful
+ or not. */
+static char *unlink_on_exit;
+
/* The list of long options. */
static struct option long_options[] =
{
- { "header-info", required_argument, 0, 'T' },
+ { "debug", no_argument, 0, 'd' },
+ { "header-file", required_argument, 0, 'T' },
{ "help", no_argument, 0, 'h' },
- { "input-format", required_argument, 0, 'I' },
- { "output-format", required_argument, 0, 'O' },
+ { "input-target", required_argument, 0, 'I' },
+ { "input-format", required_argument, 0, 'I' }, /* Obsolete */
+ { "linker", required_argument, 0, 'l' },
+ { "output-target", required_argument, 0, 'O' },
+ { "output-format", required_argument, 0, 'O' }, /* Obsolete */
{ "version", no_argument, 0, 'V' },
{ NULL, no_argument, 0, 0 }
};
static void show_help PARAMS ((void));
static void show_usage PARAMS ((FILE *, int));
static const char *select_output_format PARAMS ((enum bfd_architecture,
- long, boolean));
+ unsigned long, boolean));
static void setup_sections PARAMS ((bfd *, asection *, PTR));
static void copy_sections PARAMS ((bfd *, asection *, PTR));
-static void mangle_relocs PARAMS ((bfd *, asection *, arelent **,
- bfd_size_type *, char *,
+static void mangle_relocs PARAMS ((bfd *, asection *, arelent ***,
+ long *, char *,
bfd_size_type));
-static void i386_mangle_relocs PARAMS ((bfd *, asection *, arelent **,
- bfd_size_type *, char *,
- bfd_size_type));
-static void sparc_mangle_relocs PARAMS ((bfd *, asection *, arelent **,
- bfd_size_type *, char *,
+static void default_mangle_relocs PARAMS ((bfd *, asection *, arelent ***,
+ long *, char *,
+ bfd_size_type));
+static char *link_inputs PARAMS ((struct string_list *, char *));
+static const char *choose_temp_base_try PARAMS ((const char *,
+ const char *));
+static void choose_temp_base PARAMS ((void));
+static int pexecute PARAMS ((char *, char *[]));
+
+#ifdef NLMCONV_I386
+static void i386_mangle_relocs PARAMS ((bfd *, asection *, arelent ***,
+ long *, char *,
bfd_size_type));
+#endif
+
+#ifdef NLMCONV_ALPHA
+static void alpha_mangle_relocs PARAMS ((bfd *, asection *, arelent ***,
+ long *, char *,
+ bfd_size_type));
+#endif
+
+#ifdef NLMCONV_POWERPC
+static void powerpc_build_stubs PARAMS ((bfd *, bfd *, asymbol ***, long *));
+static void powerpc_resolve_stubs PARAMS ((bfd *, bfd *));
+static void powerpc_mangle_relocs PARAMS ((bfd *, asection *, arelent ***,
+ long *, char *,
+ bfd_size_type));
+#endif
\f
/* The main routine. */
char **argv;
{
int opt;
+ char *input_file = NULL;
const char *input_format = NULL;
const char *output_format = NULL;
const char *header_file = NULL;
+ char *ld_arg = NULL;
+ Nlm_Internal_Fixed_Header fixed_hdr_struct;
+ Nlm_Internal_Variable_Header var_hdr_struct;
+ Nlm_Internal_Version_Header version_hdr_struct;
+ Nlm_Internal_Copyright_Header copyright_hdr_struct;
+ Nlm_Internal_Extended_Header extended_hdr_struct;
bfd *inbfd;
bfd *outbfd;
asymbol **newsyms, **outsyms;
- unsigned int symcount, newsymalloc, newsymcount;
- asection *bss_sec, *data_sec;
+ long symcount, newsymalloc, newsymcount;
+ long symsize;
+ asection *text_sec, *bss_sec, *data_sec;
bfd_vma vma;
bfd_size_type align;
asymbol *endsym;
- unsigned int i;
+ long i;
char inlead, outlead;
boolean gotstart, gotexit, gotcheck;
struct stat st;
FILE *custom_data, *help_data, *message_data, *rpc_data, *shared_data;
- bfd_size_type custom_size, help_size, message_size, module_size, rpc_size;
+ size_t custom_size, help_size, message_size, module_size, rpc_size;
asection *custom_section, *help_section, *message_section, *module_section;
asection *rpc_section, *shared_section;
bfd *sharedbfd;
- bfd_size_type shared_offset, shared_size;
+ size_t shared_offset, shared_size;
Nlm_Internal_Fixed_Header sharedhdr;
int len;
char *modname;
+ char **matching;
program_name = argv[0];
+ xmalloc_set_program_name (program_name);
bfd_init ();
- while ((opt = getopt_long (argc, argv, "hI:O:T:V", long_options, (int *) 0))
+ while ((opt = getopt_long (argc, argv, "dhI:l:O:T:V", long_options,
+ (int *) NULL))
!= EOF)
{
switch (opt)
{
+ case 'd':
+ debug = 1;
+ break;
case 'h':
show_help ();
/*NOTREACHED*/
case 'I':
input_format = optarg;
break;
+ case 'l':
+ ld_arg = optarg;
+ break;
case 'O':
output_format = optarg;
break;
}
}
- if (optind + 2 != argc)
- show_usage (stderr, 1);
-
- if (strcmp (argv[optind], argv[optind + 1]) == 0)
+ /* The input and output files may be named on the command line. */
+ output_file = NULL;
+ if (optind < argc)
{
- fprintf (stderr, "%s: input and output files must be different\n",
- program_name);
- exit (1);
+ input_file = argv[optind];
+ ++optind;
+ if (optind < argc)
+ {
+ output_file = argv[optind];
+ ++optind;
+ if (optind < argc)
+ show_usage (stderr, 1);
+ if (strcmp (input_file, output_file) == 0)
+ {
+ fprintf (stderr,
+ "%s: input and output files must be different\n",
+ program_name);
+ exit (1);
+ }
+ }
}
- inbfd = bfd_openr (argv[optind], input_format);
- if (inbfd == NULL)
- bfd_fatal (argv[optind]);
-
- if (! bfd_check_format (inbfd, bfd_object))
- bfd_fatal (argv[optind]);
-
- if (output_format == NULL)
- output_format = select_output_format (bfd_get_arch (inbfd),
- bfd_get_mach (inbfd),
- inbfd->xvec->byteorder_big_p);
-
- assert (output_format != NULL);
- outbfd = bfd_openw (argv[optind + 1], output_format);
- if (outbfd == NULL)
- bfd_fatal (argv[optind + 1]);
- if (! bfd_set_format (outbfd, bfd_object))
- bfd_fatal (argv[optind + 1]);
-
- assert (outbfd->xvec->flavour == bfd_target_nlm_flavour);
-
- if (bfd_arch_get_compatible (inbfd, outbfd) == NULL)
- fprintf (stderr,
- "%s: warning:input and output formats are not compatible\n",
- program_name);
-
/* Initialize the header information to default values. */
- fixed_hdr = nlm_fixed_header (outbfd);
- var_hdr = nlm_variable_header (outbfd);
- version_hdr = nlm_version_header (outbfd);
- copyright_hdr = nlm_copyright_header (outbfd);
- extended_hdr = nlm_extended_header (outbfd);
+ fixed_hdr = &fixed_hdr_struct;
+ memset ((PTR) &fixed_hdr_struct, 0, sizeof fixed_hdr_struct);
+ var_hdr = &var_hdr_struct;
+ memset ((PTR) &var_hdr_struct, 0, sizeof var_hdr_struct);
+ version_hdr = &version_hdr_struct;
+ memset ((PTR) &version_hdr_struct, 0, sizeof version_hdr_struct);
+ copyright_hdr = ©right_hdr_struct;
+ memset ((PTR) ©right_hdr_struct, 0, sizeof copyright_hdr_struct);
+ extended_hdr = &extended_hdr_struct;
+ memset ((PTR) &extended_hdr_struct, 0, sizeof extended_hdr_struct);
check_procedure = NULL;
custom_file = NULL;
debug_info = false;
exit (1);
}
+ if (input_files != NULL)
+ {
+ if (input_file != NULL)
+ {
+ fprintf (stderr,
+ "%s: input file named both on command line and with INPUT\n",
+ program_name);
+ exit (1);
+ }
+ if (input_files->next == NULL)
+ input_file = input_files->string;
+ else
+ input_file = link_inputs (input_files, ld_arg);
+ }
+ else if (input_file == NULL)
+ {
+ fprintf (stderr, "%s: no input file\n", program_name);
+ show_usage (stderr, 1);
+ }
+
+ inbfd = bfd_openr (input_file, input_format);
+ if (inbfd == NULL)
+ bfd_fatal (input_file);
+
+ if (! bfd_check_format_matches (inbfd, bfd_object, &matching))
+ {
+ bfd_nonfatal (input_file);
+ if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
+ {
+ list_matching_formats (matching);
+ free (matching);
+ }
+ exit (1);
+ }
+
+ if (output_format == NULL)
+ output_format = select_output_format (bfd_get_arch (inbfd),
+ bfd_get_mach (inbfd),
+ inbfd->xvec->byteorder_big_p);
+
+ assert (output_format != NULL);
+
+ /* Use the output file named on the command line if it exists.
+ Otherwise use the file named in the OUTPUT statement. */
+ if (output_file == NULL)
+ {
+ fprintf (stderr, "%s: no name for output file\n",
+ program_name);
+ show_usage (stderr, 1);
+ }
+
+ outbfd = bfd_openw (output_file, output_format);
+ if (outbfd == NULL)
+ bfd_fatal (output_file);
+ if (! bfd_set_format (outbfd, bfd_object))
+ bfd_fatal (output_file);
+
+ assert (bfd_get_flavour (outbfd) == bfd_target_nlm_flavour);
+
+ if (bfd_arch_get_compatible (inbfd, outbfd) == NULL)
+ fprintf (stderr,
+ "%s: warning:input and output formats are not compatible\n",
+ program_name);
+
+ /* Move the values read from the command file into outbfd. */
+ *nlm_fixed_header (outbfd) = fixed_hdr_struct;
+ *nlm_variable_header (outbfd) = var_hdr_struct;
+ *nlm_version_header (outbfd) = version_hdr_struct;
+ *nlm_copyright_header (outbfd) = copyright_hdr_struct;
+ *nlm_extended_header (outbfd) = extended_hdr_struct;
+
/* Start copying the input BFD to the output BFD. */
if (! bfd_set_file_flags (outbfd, bfd_get_file_flags (inbfd)))
bfd_fatal (bfd_get_filename (outbfd));
- symbols = (asymbol **) xmalloc (get_symtab_upper_bound (inbfd));
+ symsize = bfd_get_symtab_upper_bound (inbfd);
+ if (symsize < 0)
+ bfd_fatal (input_file);
+ symbols = (asymbol **) xmalloc (symsize);
symcount = bfd_canonicalize_symtab (inbfd, symbols);
+ if (symcount < 0)
+ bfd_fatal (input_file);
/* Make sure we have a .bss section. */
bss_sec = bfd_get_section_by_name (outbfd, NLM_UNINITIALIZED_DATA_NAME);
bfd_fatal ("make .bss section");
}
+ /* We store the original section names in the .nlmsections section,
+ so that programs which understand it can resurrect the original
+ sections from the NLM. We will put a pointer to .nlmsections in
+ the NLM header area. */
+ secsec = bfd_make_section (outbfd, ".nlmsections");
+ if (secsec == NULL)
+ bfd_fatal ("make .nlmsections section");
+ if (! bfd_set_section_flags (outbfd, secsec, SEC_HAS_CONTENTS))
+ bfd_fatal ("set .nlmsections flags");
+
+#ifdef NLMCONV_POWERPC
+ /* For PowerPC NetWare we need to build stubs for calls to undefined
+ symbols. Because each stub requires an entry in the TOC section
+ which must be at the same location as other entries in the TOC
+ section, we must do this before determining where the TOC section
+ goes in setup_sections. */
+ if (bfd_get_arch (inbfd) == bfd_arch_powerpc)
+ powerpc_build_stubs (inbfd, outbfd, &symbols, &symcount);
+#endif
+
/* Set up the sections. */
bfd_map_over_sections (inbfd, setup_sections, (PTR) outbfd);
+ text_sec = bfd_get_section_by_name (outbfd, NLM_CODE_NAME);
+
/* The .bss section immediately follows the .data section. */
data_sec = bfd_get_section_by_name (outbfd, NLM_INITIALIZED_DATA_NAME);
if (data_sec != NULL)
/* Force _edata and _end to be defined. This would normally be
done by the linker, but the manipulation of the common
symbols will confuse it. */
- if (bfd_asymbol_name (sym)[0] == '_'
- && bfd_get_section (sym) == &bfd_und_section)
+ if ((sym->flags & BSF_DEBUGGING) == 0
+ && bfd_asymbol_name (sym)[0] == '_'
+ && bfd_is_und_section (bfd_get_section (sym)))
{
if (strcmp (bfd_asymbol_name (sym), "_edata") == 0)
{
sym->section = bss_sec;
endsym = sym;
}
- }
+
+#ifdef NLMCONV_POWERPC
+ /* For PowerPC NetWare, we define __GOT0. This is the start
+ of the .got section. */
+ if (bfd_get_arch (inbfd) == bfd_arch_powerpc
+ && strcmp (bfd_asymbol_name (sym), "__GOT0") == 0)
+ {
+ asection *got_sec;
+
+ got_sec = bfd_get_section_by_name (inbfd, ".got");
+ assert (got_sec != (asection *) NULL);
+ sym->value = got_sec->output_offset;
+ sym->section = got_sec->output_section;
+ }
+#endif
+ }
/* If this is a global symbol, check the export list. */
if ((sym->flags & (BSF_EXPORT | BSF_GLOBAL)) != 0)
{
newsymalloc += 10;
newsyms = ((asymbol **)
- xrealloc (newsyms,
+ xrealloc ((PTR) newsyms,
(newsymalloc
* sizeof (asymbol *))));
}
/* If it's an undefined symbol, see if it's on the import list.
Change the prefix if necessary. */
- if (bfd_get_section (sym) == &bfd_und_section
- && import_symbols != NULL)
+ if (bfd_is_und_section (bfd_get_section (sym)))
{
register struct string_list *l;
}
/* See if it's one of the special named symbols. */
- if (strcmp (bfd_asymbol_name (sym), start_procedure) == 0)
- {
- if (! bfd_set_start_address (outbfd, bfd_asymbol_value (sym)))
- bfd_fatal ("set start address");
- gotstart = true;
- }
- if (strcmp (bfd_asymbol_name (sym), exit_procedure) == 0)
+ if ((sym->flags & BSF_DEBUGGING) == 0)
{
- nlm_fixed_header (outbfd)->exitProcedureOffset =
- bfd_asymbol_value (sym);
- gotexit = true;
- }
- if (check_procedure != NULL
- && strcmp (bfd_asymbol_name (sym), check_procedure) == 0)
- {
- nlm_fixed_header (outbfd)->checkUnloadProcedureOffset =
- bfd_asymbol_value (sym);
- gotcheck = true;
+ bfd_vma val;
+
+ /* FIXME: If these symbols are not in the .text section, we
+ add the .text section size to the value. This may not be
+ correct for all targets. I'm not sure how this should
+ really be handled. */
+ if (strcmp (bfd_asymbol_name (sym), start_procedure) == 0)
+ {
+ val = bfd_asymbol_value (sym);
+ if (bfd_get_section (sym) == data_sec
+ && text_sec != (asection *) NULL)
+ val += bfd_section_size (outbfd, text_sec);
+ if (! bfd_set_start_address (outbfd, val))
+ bfd_fatal ("set start address");
+ gotstart = true;
+ }
+ if (strcmp (bfd_asymbol_name (sym), exit_procedure) == 0)
+ {
+ val = bfd_asymbol_value (sym);
+ if (bfd_get_section (sym) == data_sec
+ && text_sec != (asection *) NULL)
+ val += bfd_section_size (outbfd, text_sec);
+ nlm_fixed_header (outbfd)->exitProcedureOffset = val;
+ gotexit = true;
+ }
+ if (check_procedure != NULL
+ && strcmp (bfd_asymbol_name (sym), check_procedure) == 0)
+ {
+ val = bfd_asymbol_value (sym);
+ if (bfd_get_section (sym) == data_sec
+ && text_sec != (asection *) NULL)
+ val += bfd_section_size (outbfd, text_sec);
+ nlm_fixed_header (outbfd)->checkUnloadProcedureOffset = val;
+ gotcheck = true;
+ }
}
}
if (endsym != NULL)
- endsym->value = bfd_get_section_size_before_reloc (bss_sec);
+ {
+ endsym->value = bfd_get_section_size_before_reloc (bss_sec);
+
+ /* FIXME: If any relocs referring to _end use inplace addends,
+ then I think they need to be updated. This is handled by
+ i386_mangle_relocs. Is it needed for any other object
+ formats? */
+ }
if (newsymcount == 0)
outsyms = symbols;
|| ! bfd_check_format (sharedbfd, bfd_object))
{
fprintf (stderr, "%s:%s: %s\n", program_name, sharelib_file,
- bfd_errmsg (bfd_error));
+ bfd_errmsg (bfd_get_error ()));
sharelib_file = NULL;
}
else
need. However, we would have to figure out the sizes
of the external and public information, and that can
not be done without reading through them. */
+ if (sharedhdr.uninitializedDataSize > 0)
+ {
+ /* There is no place to record this information. */
+ fprintf (stderr,
+ "%s:%s: warning: shared libraries can not have uninitialized data\n",
+ program_name, sharelib_file);
+ }
shared_offset = st.st_size;
if (shared_offset > sharedhdr.codeImageOffset)
shared_offset = sharedhdr.codeImageOffset;
is what NLMLINK does. */
strncpy (nlm_extended_header (outbfd)->stamp, "MeSsAgEs", 8);
+ strncpy (nlm_cygnus_ext_header (outbfd)->stamp, "CyGnUsEx", 8);
+
/* If the date was not given, force it in. */
if (nlm_version_header (outbfd)->month == 0
&& nlm_version_header (outbfd)->day == 0
strncpy (version_hdr->stamp, "VeRsIoN#", 8);
}
+#ifdef NLMCONV_POWERPC
+ /* Resolve the stubs we build for PowerPC NetWare. */
+ if (bfd_get_arch (inbfd) == bfd_arch_powerpc)
+ powerpc_resolve_stubs (inbfd, outbfd);
+#endif
+
/* Copy over the sections. */
bfd_map_over_sections (inbfd, copy_sections, (PTR) outbfd);
}
if (map_file != NULL)
fprintf (stderr,
- "%s: MAP and FULLMAP are not supported; try ld -M\n",
+ "%s: warning: MAP and FULLMAP are not supported; try ld -M\n",
program_name);
if (help_file != NULL)
{
if (modules != NULL)
{
PTR data;
- char *set;
+ unsigned char *set;
struct string_list *l;
bfd_size_type c;
data = xmalloc (module_size);
c = 0;
- set = (char *) data;
+ set = (unsigned char *) data;
for (l = modules; l != NULL; l = l->next)
{
*set = strlen (l->string);
sharedhdr.exitProcedureOffset;
free (data);
}
- len = strlen (argv[optind + 1]);
+ len = strlen (output_file);
if (len > NLM_MODULE_NAME_SIZE - 2)
len = NLM_MODULE_NAME_SIZE - 2;
nlm_fixed_header (outbfd)->moduleName[0] = len;
- strncpy (nlm_fixed_header (outbfd)->moduleName + 1, argv[optind + 1],
+ strncpy (nlm_fixed_header (outbfd)->moduleName + 1, output_file,
NLM_MODULE_NAME_SIZE - 2);
nlm_fixed_header (outbfd)->moduleName[NLM_MODULE_NAME_SIZE - 1] = '\0';
for (modname = nlm_fixed_header (outbfd)->moduleName;
strncpy (nlm_variable_header (outbfd)->oldThreadName, " LONG",
NLM_OLD_THREAD_NAME_LENGTH);
+ nlm_cygnus_ext_header (outbfd)->offset = secsec->filepos;
+ nlm_cygnus_ext_header (outbfd)->length = bfd_section_size (outbfd, secsec);
+
if (! bfd_close (outbfd))
- bfd_fatal (argv[optind + 1]);
+ bfd_fatal (output_file);
if (! bfd_close (inbfd))
- bfd_fatal (argv[optind]);
+ bfd_fatal (input_file);
+
+ if (unlink_on_exit != NULL)
+ unlink (unlink_on_exit);
return 0;
}
int status;
{
fprintf (file, "\
-Usage: %s [-hV] [-I format] [-O format] [-T header-file]\n\
- [--input-format=format] [--output-format=format]\n\
- [--header-file=file] [--help] [--version]\n\
- in-file out-file\n",
+Usage: %s [-dhV] [-I bfdname] [-O bfdname] [-T header-file] [-l linker]\n\
+ [--input-target=bfdname] [--output-target=bfdname]\n\
+ [--header-file=file] [--linker=linker] [--debug]\n\
+ [--help] [--version]\n\
+ [in-file [out-file]]\n",
program_name);
exit (status);
}
static const char *
select_output_format (arch, mach, bigendian)
enum bfd_architecture arch;
- long mach;
+ unsigned long mach;
boolean bigendian;
{
switch (arch)
{
+#ifdef NLMCONV_I386
case bfd_arch_i386:
return "nlm32-i386";
+#endif
+#ifdef NLMCONV_SPARC
case bfd_arch_sparc:
return "nlm32-sparc";
+#endif
+#ifdef NLMCONV_ALPHA
+ case bfd_arch_alpha:
+ return "nlm32-alpha";
+#endif
+#ifdef NLMCONV_POWERPC
+ case bfd_arch_powerpc:
+ return "nlm32-powerpc";
+#endif
default:
- fprintf (stderr, "%s: no default NLM format for %s\n",
+ fprintf (stderr, "%s: support not compiled in for %s\n",
program_name, bfd_printable_arch_mach (arch, mach));
exit (1);
/* Avoid warning. */
flagword f;
const char *outname;
asection *outsec;
+ bfd_vma offset;
+ bfd_size_type align;
+ bfd_size_type add;
+ bfd_size_type secsecsize;
f = bfd_get_section_flags (inbfd, insec);
if (f & SEC_CODE)
}
insec->output_section = outsec;
- insec->output_offset = bfd_section_size (outbfd, outsec);
+
+ offset = bfd_section_size (outbfd, outsec);
+ align = 1 << bfd_section_alignment (inbfd, insec);
+ add = ((offset + align - 1) &~ (align - 1)) - offset;
+ insec->output_offset = offset + add;
if (! bfd_set_section_size (outbfd, outsec,
(bfd_section_size (outbfd, outsec)
- + bfd_section_size (inbfd, insec))))
+ + bfd_section_size (inbfd, insec)
+ + add)))
bfd_fatal ("set section size");
if ((bfd_section_alignment (inbfd, insec)
if (! bfd_set_section_flags (outbfd, outsec, f))
bfd_fatal ("set section flags");
+
+ bfd_set_reloc (outbfd, outsec, (arelent **) NULL, 0);
+
+ /* For each input section we allocate space for an entry in
+ .nlmsections. */
+ secsecsize = bfd_section_size (outbfd, secsec);
+ secsecsize += strlen (bfd_section_name (inbfd, insec)) + 1;
+ secsecsize = (secsecsize + 3) &~ 3;
+ secsecsize += 8;
+ if (! bfd_set_section_size (outbfd, secsec, secsecsize))
+ bfd_fatal ("set .nlmsections size");
}
/* Copy the section contents. */
asection *insec;
PTR data_ptr;
{
+ static bfd_size_type secsecoff = 0;
bfd *outbfd = (bfd *) data_ptr;
+ const char *inname;
asection *outsec;
bfd_size_type size;
PTR contents;
- bfd_size_type reloc_size;
+ long reloc_size;
+ bfd_byte buf[4];
+ bfd_size_type add;
+
+ inname = bfd_section_name (inbfd, insec);
outsec = insec->output_section;
assert (outsec != NULL);
size = bfd_get_section_size_before_reloc (insec);
- if (size == 0)
- return;
/* FIXME: Why are these necessary? */
insec->_cooked_size = insec->_raw_size;
}
reloc_size = bfd_get_reloc_upper_bound (inbfd, insec);
- if (reloc_size == 0)
- bfd_set_reloc (outbfd, outsec, (arelent **) NULL, 0);
- else
+ if (reloc_size < 0)
+ bfd_fatal (bfd_get_filename (inbfd));
+ if (reloc_size != 0)
{
arelent **relocs;
- bfd_size_type reloc_count;
+ long reloc_count;
relocs = (arelent **) xmalloc (reloc_size);
reloc_count = bfd_canonicalize_reloc (inbfd, insec, relocs, symbols);
- mangle_relocs (outbfd, insec, relocs, &reloc_count, (char *) contents,
+ if (reloc_count < 0)
+ bfd_fatal (bfd_get_filename (inbfd));
+ mangle_relocs (outbfd, insec, &relocs, &reloc_count, (char *) contents,
size);
+
+ /* FIXME: refers to internal BFD fields. */
+ if (outsec->orelocation != (arelent **) NULL)
+ {
+ bfd_size_type total_count;
+ arelent **combined;
+
+ total_count = reloc_count + outsec->reloc_count;
+ combined = (arelent **) xmalloc (total_count * sizeof (arelent *));
+ memcpy (combined, outsec->orelocation,
+ outsec->reloc_count * sizeof (arelent *));
+ memcpy (combined + outsec->reloc_count, relocs,
+ (size_t) (reloc_count * sizeof (arelent *)));
+ free (outsec->orelocation);
+ reloc_count = total_count;
+ relocs = combined;
+ }
+
bfd_set_reloc (outbfd, outsec, relocs, reloc_count);
}
bfd_fatal (bfd_get_filename (outbfd));
free (contents);
}
+
+ /* Add this section to .nlmsections. */
+ if (! bfd_set_section_contents (outbfd, secsec, (PTR) inname, secsecoff,
+ strlen (inname) + 1))
+ bfd_fatal ("set .nlmsection contents");
+ secsecoff += strlen (inname) + 1;
+
+ add = ((secsecoff + 3) &~ 3) - secsecoff;
+ if (add != 0)
+ {
+ bfd_h_put_32 (outbfd, (bfd_vma) 0, buf);
+ if (! bfd_set_section_contents (outbfd, secsec, buf, secsecoff, add))
+ bfd_fatal ("set .nlmsection contents");
+ secsecoff += add;
+ }
+
+ if (contents != NULL)
+ bfd_h_put_32 (outbfd, (bfd_vma) outsec->filepos, buf);
+ else
+ bfd_h_put_32 (outbfd, (bfd_vma) 0, buf);
+ if (! bfd_set_section_contents (outbfd, secsec, buf, secsecoff, 4))
+ bfd_fatal ("set .nlmsection contents");
+ secsecoff += 4;
+
+ bfd_h_put_32 (outbfd, (bfd_vma) size, buf);
+ if (! bfd_set_section_contents (outbfd, secsec, buf, secsecoff, 4))
+ bfd_fatal ("set .nlmsection contents");
+ secsecoff += 4;
}
/* Some, perhaps all, NetWare targets require changing the relocs used
by the input formats. */
static void
-mangle_relocs (outbfd, insec, relocs, reloc_count_ptr, contents, contents_size)
+mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr, contents,
+ contents_size)
bfd *outbfd;
asection *insec;
- arelent **relocs;
- bfd_size_type *reloc_count_ptr;
+ arelent ***relocs_ptr;
+ long *reloc_count_ptr;
char *contents;
bfd_size_type contents_size;
{
switch (bfd_get_arch (outbfd))
{
+#ifdef NLMCONV_I386
case bfd_arch_i386:
- i386_mangle_relocs (outbfd, insec, relocs, reloc_count_ptr, contents,
- contents_size);
+ i386_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr,
+ contents, contents_size);
+ break;
+#endif
+#ifdef NLMCONV_ALPHA
+ case bfd_arch_alpha:
+ alpha_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr,
+ contents, contents_size);
+ break;
+#endif
+#ifdef NLMCONV_POWERPC
+ case bfd_arch_powerpc:
+ powerpc_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr,
+ contents, contents_size);
break;
+#endif
default:
+ default_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr,
+ contents, contents_size);
break;
}
}
+/* By default all we need to do for relocs is change the address by
+ the output_offset. */
+
+/*ARGSUSED*/
+static void
+default_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr, contents,
+ contents_size)
+ bfd *outbfd;
+ asection *insec;
+ arelent ***relocs_ptr;
+ long *reloc_count_ptr;
+ char *contents;
+ bfd_size_type contents_size;
+{
+ if (insec->output_offset != 0)
+ {
+ long reloc_count;
+ register arelent **relocs;
+ register long i;
+
+ reloc_count = *reloc_count_ptr;
+ relocs = *relocs_ptr;
+ for (i = 0; i < reloc_count; i++, relocs++)
+ (*relocs)->address += insec->output_offset;
+ }
+}
+\f
+#ifdef NLMCONV_I386
+
/* NetWare on the i386 supports a restricted set of relocs, which are
different from those used on other i386 targets. This routine
converts the relocs. It is, obviously, very target dependent. At
true); /* pcrel_offset */
static void
-i386_mangle_relocs (outbfd, insec, relocs, reloc_count_ptr, contents,
+i386_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr, contents,
contents_size)
bfd *outbfd;
asection *insec;
- arelent **relocs;
- bfd_size_type *reloc_count_ptr;
+ arelent ***relocs_ptr;
+ long *reloc_count_ptr;
char *contents;
bfd_size_type contents_size;
{
- bfd_size_type reloc_count, i;
+ long reloc_count, i;
+ arelent **relocs;
reloc_count = *reloc_count_ptr;
+ relocs = *relocs_ptr;
for (i = 0; i < reloc_count; i++)
{
arelent *rel;
--*reloc_count_ptr;
--relocs;
memmove (relocs, relocs + 1,
- (reloc_count - i) * sizeof (arelent *));
+ (size_t) ((reloc_count - i) * sizeof (arelent *)));
continue;
}
--*reloc_count_ptr;
--relocs;
memmove (relocs, relocs + 1,
- (reloc_count - i) * sizeof (arelent *));
+ (size_t) ((reloc_count - i) * sizeof (arelent *)));
continue;
}
/* Adjust the reloc for the changes we just made. */
rel->addend = 0;
- if (bfd_get_section (sym) != &bfd_und_section)
+ if (! bfd_is_und_section (bfd_get_section (sym)))
rel->sym_ptr_ptr = bfd_get_section (sym)->symbol_ptr_ptr;
}
}
}
}
+
+#endif /* NLMCONV_I386 */
+\f
+#ifdef NLMCONV_ALPHA
+
+/* On the Alpha the first reloc for every section must be a special
+ relocs which hold the GP address. Also, the first reloc in the
+ file must be a special reloc which holds the address of the .lita
+ section. */
+
+static reloc_howto_type nlm32_alpha_nw_howto =
+ HOWTO (ALPHA_R_NW_RELOC, /* type */
+ 0, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ 0, /* special_function */
+ "NW_RELOC", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ false); /* pcrel_offset */
+
+/*ARGSUSED*/
+static void
+alpha_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr, contents,
+ contents_size)
+ bfd *outbfd;
+ asection *insec;
+ register arelent ***relocs_ptr;
+ long *reloc_count_ptr;
+ char *contents;
+ bfd_size_type contents_size;
+{
+ long old_reloc_count;
+ arelent **old_relocs;
+ register arelent **relocs;
+
+ old_reloc_count = *reloc_count_ptr;
+ old_relocs = *relocs_ptr;
+ relocs = (arelent **) xmalloc ((old_reloc_count + 3) * sizeof (arelent *));
+ *relocs_ptr = relocs;
+
+ if (nlm_alpha_backend_data (outbfd)->lita_address == 0)
+ {
+ bfd *inbfd;
+ asection *lita_section;
+
+ inbfd = insec->owner;
+ lita_section = bfd_get_section_by_name (inbfd, _LITA);
+ if (lita_section != (asection *) NULL)
+ {
+ nlm_alpha_backend_data (outbfd)->lita_address =
+ bfd_get_section_vma (inbfd, lita_section);
+ nlm_alpha_backend_data (outbfd)->lita_size =
+ bfd_section_size (inbfd, lita_section);
+ }
+ else
+ {
+ /* Avoid outputting this reloc again. */
+ nlm_alpha_backend_data (outbfd)->lita_address = 4;
+ }
+
+ *relocs = (arelent *) xmalloc (sizeof (arelent));
+ (*relocs)->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
+ (*relocs)->address = nlm_alpha_backend_data (outbfd)->lita_address;
+ (*relocs)->addend = nlm_alpha_backend_data (outbfd)->lita_size + 1;
+ (*relocs)->howto = &nlm32_alpha_nw_howto;
+ ++relocs;
+ ++(*reloc_count_ptr);
+ }
+
+ /* Get the GP value from bfd. */
+ if (nlm_alpha_backend_data (outbfd)->gp == 0)
+ nlm_alpha_backend_data (outbfd)->gp =
+ bfd_ecoff_get_gp_value (insec->owner);
+
+ *relocs = (arelent *) xmalloc (sizeof (arelent));
+ (*relocs)->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
+ (*relocs)->address = nlm_alpha_backend_data (outbfd)->gp;
+ (*relocs)->addend = 0;
+ (*relocs)->howto = &nlm32_alpha_nw_howto;
+ ++relocs;
+ ++(*reloc_count_ptr);
+
+ memcpy ((PTR) relocs, (PTR) old_relocs,
+ (size_t) old_reloc_count * sizeof (arelent *));
+ relocs[old_reloc_count] = (arelent *) NULL;
+
+ free (old_relocs);
+
+ if (insec->output_offset != 0)
+ {
+ register bfd_size_type i;
+
+ for (i = 0; i < old_reloc_count; i++, relocs++)
+ (*relocs)->address += insec->output_offset;
+ }
+}
+
+#endif /* NLMCONV_ALPHA */
+\f
+#ifdef NLMCONV_POWERPC
+
+/* We keep a linked list of stubs which we must build. Because BFD
+ requires us to know the sizes of all sections before we can set the
+ contents of any, we must figure out which stubs we want to build
+ before we can actually build any of them. */
+
+struct powerpc_stub
+{
+ /* Next stub in linked list. */
+ struct powerpc_stub *next;
+
+ /* Symbol whose value is the start of the stub. This is a symbol
+ whose name begins with `.'. */
+ asymbol *start;
+
+ /* Symbol we are going to create a reloc against. This is a symbol
+ with the same name as START but without the leading `.'. */
+ asymbol *reloc;
+
+ /* The TOC index for this stub. This is the index into the TOC
+ section at which the reloc is created. */
+ unsigned int toc_index;
+};
+
+/* The linked list of stubs. */
+
+static struct powerpc_stub *powerpc_stubs;
+
+/* This is what a stub looks like. The first instruction will get
+ adjusted with the correct TOC index. */
+
+static unsigned long powerpc_stub_insns[] =
+{
+ 0x81820000, /* lwz r12,0(r2) */
+ 0x90410014, /* stw r2,20(r1) */
+ 0x800c0000, /* lwz r0,0(r12) */
+ 0x804c0004, /* lwz r2,r(r12) */
+ 0x7c0903a6, /* mtctr r0 */
+ 0x4e800420, /* bctr */
+ 0, /* Traceback table. */
+ 0xc8000,
+ 0
+};
+
+#define POWERPC_STUB_INSN_COUNT \
+ (sizeof powerpc_stub_insns / sizeof powerpc_stub_insns[0])
+
+#define POWERPC_STUB_SIZE (4 * POWERPC_STUB_INSN_COUNT)
+
+/* Each stub uses a four byte TOC entry. */
+#define POWERPC_STUB_TOC_ENTRY_SIZE (4)
+
+/* The original size of the .got section. */
+static bfd_size_type powerpc_initial_got_size;
+
+/* Look for all undefined symbols beginning with `.', and prepare to
+ build a stub for each one. */
+
+static void
+powerpc_build_stubs (inbfd, outbfd, symbols_ptr, symcount_ptr)
+ bfd *inbfd;
+ bfd *outbfd;
+ asymbol ***symbols_ptr;
+ long *symcount_ptr;
+{
+ asection *stub_sec;
+ asection *got_sec;
+ unsigned int got_base;
+ long i;
+ long symcount;
+ long stubcount;
+
+ /* Make a section to hold stubs. We don't set SEC_HAS_CONTENTS for
+ the section to prevent copy_sections from reading from it. */
+ stub_sec = bfd_make_section (inbfd, ".stubs");
+ if (stub_sec == (asection *) NULL
+ || ! bfd_set_section_flags (inbfd, stub_sec,
+ (SEC_CODE
+ | SEC_RELOC
+ | SEC_ALLOC
+ | SEC_LOAD))
+ || ! bfd_set_section_alignment (inbfd, stub_sec, 2))
+ bfd_fatal (".stubs");
+
+ /* Get the TOC section, which is named .got. */
+ got_sec = bfd_get_section_by_name (inbfd, ".got");
+ if (got_sec == (asection *) NULL)
+ {
+ got_sec = bfd_make_section (inbfd, ".got");
+ if (got_sec == (asection *) NULL
+ || ! bfd_set_section_flags (inbfd, got_sec,
+ (SEC_DATA
+ | SEC_RELOC
+ | SEC_ALLOC
+ | SEC_LOAD
+ | SEC_HAS_CONTENTS))
+ || ! bfd_set_section_alignment (inbfd, got_sec, 2))
+ bfd_fatal (".got");
+ }
+
+ powerpc_initial_got_size = bfd_section_size (inbfd, got_sec);
+ got_base = powerpc_initial_got_size;
+ got_base = (got_base + 3) &~ 3;
+
+ stubcount = 0;
+
+ symcount = *symcount_ptr;
+ for (i = 0; i < symcount; i++)
+ {
+ asymbol *sym;
+ asymbol *newsym;
+ char *newname;
+ struct powerpc_stub *item;
+
+ sym = (*symbols_ptr)[i];
+
+ /* We must make a stub for every undefined symbol whose name
+ starts with '.'. */
+ if (bfd_asymbol_name (sym)[0] != '.'
+ || ! bfd_is_und_section (bfd_get_section (sym)))
+ continue;
+
+ /* Make a new undefined symbol with the same name but without
+ the leading `.'. */
+ newsym = (asymbol *) xmalloc (sizeof (asymbol));
+ *newsym = *sym;
+ newname = (char *) xmalloc (strlen (bfd_asymbol_name (sym)));
+ strcpy (newname, bfd_asymbol_name (sym) + 1);
+ newsym->name = newname;
+
+ /* Define the `.' symbol to be in the stub section. */
+ sym->section = stub_sec;
+ sym->value = stubcount * POWERPC_STUB_SIZE;
+ /* We set the BSF_DYNAMIC flag here so that we can check it when
+ we are mangling relocs. FIXME: This is a hack. */
+ sym->flags = BSF_LOCAL | BSF_DYNAMIC;
+
+ /* Add this stub to the linked list. */
+ item = (struct powerpc_stub *) xmalloc (sizeof (struct powerpc_stub));
+ item->start = sym;
+ item->reloc = newsym;
+ item->toc_index = got_base + stubcount * POWERPC_STUB_TOC_ENTRY_SIZE;
+
+ item->next = powerpc_stubs;
+ powerpc_stubs = item;
+
+ ++stubcount;
+ }
+
+ if (stubcount > 0)
+ {
+ asymbol **s;
+ struct powerpc_stub *l;
+
+ /* Add the new symbols we just created to the symbol table. */
+ *symbols_ptr = (asymbol **) xrealloc ((char *) *symbols_ptr,
+ ((symcount + stubcount)
+ * sizeof (asymbol)));
+ *symcount_ptr += stubcount;
+ s = &(*symbols_ptr)[symcount];
+ for (l = powerpc_stubs; l != (struct powerpc_stub *) NULL; l = l->next)
+ *s++ = l->reloc;
+
+ /* Set the size of the .stubs section and increase the size of
+ the .got section. */
+ if (! bfd_set_section_size (inbfd, stub_sec,
+ stubcount * POWERPC_STUB_SIZE)
+ || ! bfd_set_section_size (inbfd, got_sec,
+ (got_base
+ + (stubcount
+ * POWERPC_STUB_TOC_ENTRY_SIZE))))
+ bfd_fatal ("stub section sizes");
+ }
+
+ /* PowerPC NetWare requires a custom header. We create it here.
+ The first word is the header version number, currently 1. The
+ second word is the timestamp of the input file. Unfortunately,
+ they do not conform to the emergent standard for custom headers.
+ We must fake the version number and timestamp in the offset and
+ length fields. */
+ memcpy (nlm_custom_header (outbfd)->stamp, "CuStHeAd", 8);
+ nlm_custom_header (outbfd)->hdrLength = 0;
+ /* Put version number in dataOffset field. */
+ nlm_custom_header (outbfd)->dataOffset = 1;
+ /* Put timestamp in length field. */
+ {
+ struct stat s;
+
+ if (stat (bfd_get_filename (inbfd), &s) < 0)
+ s.st_mtime = 0;
+ nlm_custom_header (outbfd)->dataLength = s.st_mtime;
+ }
+ /* No data stamp. */
+ memset (nlm_custom_header (outbfd)->dataStamp, 0,
+ sizeof (nlm_custom_header (outbfd)->dataStamp));
+}
+
+/* Resolve all the stubs for PowerPC NetWare. We fill in the contents
+ of the output section, and create new relocs in the TOC. */
+
+static void
+powerpc_resolve_stubs (inbfd, outbfd)
+ bfd *inbfd;
+ bfd *outbfd;
+{
+ bfd_byte buf[POWERPC_STUB_SIZE];
+ unsigned int i;
+ unsigned int stubcount;
+ arelent **relocs;
+ asection *got_sec;
+ arelent **r;
+ struct powerpc_stub *l;
+
+ if (powerpc_stubs == (struct powerpc_stub *) NULL)
+ return;
+
+ for (i = 0; i < POWERPC_STUB_INSN_COUNT; i++)
+ bfd_put_32 (outbfd, (bfd_vma) powerpc_stub_insns[i], buf + i * 4);
+
+ got_sec = bfd_get_section_by_name (inbfd, ".got");
+ assert (got_sec != (asection *) NULL);
+ assert (got_sec->output_section->orelocation == (arelent **) NULL);
+
+ stubcount = 0;
+ for (l = powerpc_stubs; l != (struct powerpc_stub *) NULL; l = l->next)
+ ++stubcount;
+ relocs = (arelent **) xmalloc (stubcount * sizeof (arelent *));
+
+ r = relocs;
+ for (l = powerpc_stubs; l != (struct powerpc_stub *) NULL; l = l->next)
+ {
+ arelent *reloc;
+
+ /* Adjust the first instruction to use the right TOC index. */
+ bfd_put_32 (outbfd, (bfd_vma) powerpc_stub_insns[0] + l->toc_index, buf);
+
+ /* Write this stub out. */
+ if (! bfd_set_section_contents (outbfd,
+ bfd_get_section (l->start),
+ buf,
+ l->start->value,
+ POWERPC_STUB_SIZE))
+ bfd_fatal ("writing stub");
+
+ /* Create a new reloc for the TOC entry. */
+ reloc = (arelent *) xmalloc (sizeof (arelent));
+ reloc->sym_ptr_ptr = &l->reloc;
+ reloc->address = l->toc_index + got_sec->output_offset;
+ reloc->addend = 0;
+ reloc->howto = bfd_reloc_type_lookup (inbfd, BFD_RELOC_32);
+
+ *r++ = reloc;
+ }
+
+ bfd_set_reloc (outbfd, got_sec->output_section, relocs, stubcount);
+}
+
+/* Adjust relocation entries for PowerPC NetWare. We do not output
+ TOC relocations. The object code already contains the offset from
+ the TOC pointer. When the function is called, the TOC register,
+ r2, will be set to the correct TOC value, so there is no need for
+ any further reloc. */
+
+/*ARGSUSED*/
+static void
+powerpc_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr, contents,
+ contents_size)
+ bfd *outbfd;
+ asection *insec;
+ register arelent ***relocs_ptr;
+ long *reloc_count_ptr;
+ char *contents;
+ bfd_size_type contents_size;
+{
+ const reloc_howto_type *toc_howto;
+ long reloc_count;
+ register arelent **relocs;
+ register long i;
+
+ toc_howto = bfd_reloc_type_lookup (insec->owner, BFD_RELOC_PPC_TOC16);
+ if (toc_howto == (reloc_howto_type *) NULL)
+ abort ();
+
+ /* If this is the .got section, clear out all the contents beyond
+ the initial size. We must do this here because copy_sections is
+ going to write out whatever we return in the contents field. */
+ if (strcmp (bfd_get_section_name (insec->owner, insec), ".got") == 0)
+ memset (contents + powerpc_initial_got_size, 0,
+ (bfd_get_section_size_after_reloc (insec)
+ - powerpc_initial_got_size));
+
+ reloc_count = *reloc_count_ptr;
+ relocs = *relocs_ptr;
+ for (i = 0; i < reloc_count; i++)
+ {
+ arelent *rel;
+ asymbol *sym;
+ bfd_vma symvalue;
+
+ rel = *relocs++;
+ sym = *rel->sym_ptr_ptr;
+
+ /* We must be able to resolve all PC relative relocs at this
+ point. If we get a branch to an undefined symbol we build a
+ stub, since NetWare will resolve undefined symbols into a
+ pointer to a function descriptor. */
+ if (rel->howto->pc_relative)
+ {
+ /* This check for whether a symbol is in the same section as
+ the reloc will be wrong if there is a PC relative reloc
+ between two sections both of which were placed in the
+ same output section. This should not happen. */
+ if (bfd_get_section (sym) != insec->output_section)
+ fprintf (stderr, "%s: unresolved PC relative reloc against %s\n",
+ program_name, bfd_asymbol_name (sym));
+ else
+ {
+ bfd_vma val;
+
+ assert (rel->howto->size == 2 && rel->howto->pcrel_offset);
+ val = bfd_get_32 (outbfd, (bfd_byte *) contents + rel->address);
+ val = ((val &~ rel->howto->dst_mask)
+ | (((val & rel->howto->src_mask)
+ + (sym->value - rel->address)
+ + rel->addend)
+ & rel->howto->dst_mask));
+ bfd_put_32 (outbfd, val, (bfd_byte *) contents + rel->address);
+
+ /* If this reloc is against an stubbed symbol and the
+ next instruction is
+ cror 31,31,31
+ then we replace the next instruction with
+ lwz r2,20(r1)
+ This reloads the TOC pointer after a stub call. */
+ if (bfd_asymbol_name (sym)[0] == '.'
+ && (sym->flags & BSF_DYNAMIC) != 0
+ && (bfd_get_32 (outbfd,
+ (bfd_byte *) contents + rel->address + 4)
+ == 0x4ffffb82)) /* cror 31,31,31 */
+ bfd_put_32 (outbfd, (bfd_vma) 0x80410014, /* lwz r2,20(r1) */
+ (bfd_byte *) contents + rel->address + 4);
+
+ --*reloc_count_ptr;
+ --relocs;
+ memmove (relocs, relocs + 1,
+ (size_t) ((reloc_count - 1) * sizeof (arelent *)));
+ continue;
+ }
+ }
+
+ /* When considering a TOC reloc, we do not want to include the
+ symbol value. The symbol will be start of the TOC section
+ (which is named .got). We do want to include the addend. */
+ if (rel->howto == toc_howto)
+ symvalue = 0;
+ else
+ symvalue = sym->value;
+
+ /* If this is a relocation against a symbol with a value, or
+ there is a reloc addend, we need to update the addend in the
+ object file. */
+ if (symvalue + rel->addend != 0)
+ {
+ bfd_vma val;
+
+ switch (rel->howto->size)
+ {
+ case 1:
+ val = bfd_get_16 (outbfd,
+ (bfd_byte *) contents + rel->address);
+ val = ((val &~ rel->howto->dst_mask)
+ | (((val & rel->howto->src_mask)
+ + symvalue
+ + rel->addend)
+ & rel->howto->dst_mask));
+ if ((bfd_signed_vma) val < - 0x8000
+ || (bfd_signed_vma) val >= 0x8000)
+ fprintf (stderr,
+ "%s: overflow when adjusting relocation against %s\n",
+ program_name, bfd_asymbol_name (sym));
+ bfd_put_16 (outbfd, val, (bfd_byte *) contents + rel->address);
+ break;
+
+ case 2:
+ val = bfd_get_32 (outbfd,
+ (bfd_byte *) contents + rel->address);
+ val = ((val &~ rel->howto->dst_mask)
+ | (((val & rel->howto->src_mask)
+ + symvalue
+ + rel->addend)
+ & rel->howto->dst_mask));
+ bfd_put_32 (outbfd, val, (bfd_byte *) contents + rel->address);
+ break;
+
+ default:
+ abort ();
+ }
+
+ rel->sym_ptr_ptr = bfd_get_section (sym)->symbol_ptr_ptr;
+ rel->addend = 0;
+ }
+
+ /* Now that we have incorporated the addend, remove any TOC
+ relocs. */
+ if (rel->howto == toc_howto)
+ {
+ --*reloc_count_ptr;
+ --relocs;
+ memmove (relocs, relocs + 1,
+ (size_t) ((reloc_count - i) * sizeof (arelent *)));
+ continue;
+ }
+
+ rel->address += insec->output_offset;
+ }
+}
+
+#endif /* NLMCONV_POWERPC */
+\f
+/* Name of linker. */
+#ifndef LD_NAME
+#define LD_NAME "ld"
+#endif
+
+/* Temporary file name base. */
+static char *temp_filename;
+
+/* The user has specified several input files. Invoke the linker to
+ link them all together, and convert and delete the resulting output
+ file. */
+
+static char *
+link_inputs (inputs, ld)
+ struct string_list *inputs;
+ char *ld;
+{
+ size_t c;
+ struct string_list *q;
+ char **argv;
+ size_t i;
+ int pid;
+ int status;
+
+ c = 0;
+ for (q = inputs; q != NULL; q = q->next)
+ ++c;
+
+ argv = (char **) alloca (c + 5);
+
+#ifndef __MSDOS__
+ if (ld == NULL)
+ {
+ char *p;
+
+ /* Find the linker to invoke based on how nlmconv was run. */
+ p = program_name + strlen (program_name);
+ while (p != program_name)
+ {
+ if (p[-1] == '/')
+ {
+ ld = (char *) xmalloc (p - program_name + strlen (LD_NAME) + 1);
+ memcpy (ld, program_name, p - program_name);
+ strcpy (ld + (p - program_name), LD_NAME);
+ break;
+ }
+ --p;
+ }
+ }
+#endif
+
+ if (ld == NULL)
+ ld = (char *) LD_NAME;
+
+ choose_temp_base ();
+
+ unlink_on_exit = xmalloc (strlen (temp_filename) + 3);
+ sprintf (unlink_on_exit, "%s.O", temp_filename);
+
+ argv[0] = ld;
+ argv[1] = (char *) "-r";
+ argv[2] = (char *) "-o";
+ argv[3] = unlink_on_exit;
+ i = 4;
+ for (q = inputs; q != NULL; q = q->next, i++)
+ argv[i] = q->string;
+ argv[i] = NULL;
+
+ if (debug)
+ {
+ for (i = 0; argv[i] != NULL; i++)
+ fprintf (stderr, " %s", argv[i]);
+ fprintf (stderr, "\n");
+ }
+
+ pid = pexecute (ld, argv);
+
+ if (waitpid (pid, &status, 0) < 0)
+ {
+ perror ("waitpid");
+ unlink (unlink_on_exit);
+ exit (1);
+ }
+
+ if (status != 0)
+ {
+ fprintf (stderr, "%s: Execution of %s failed\n", program_name, ld);
+ unlink (unlink_on_exit);
+ exit (1);
+ }
+
+ return unlink_on_exit;
+}
+
+/* Choose a temporary file name. Stolen from gcc.c. */
+
+static const char *
+choose_temp_base_try (try, base)
+ const char *try;
+ const char *base;
+{
+ const char *rv;
+
+ if (base)
+ rv = base;
+ else if (try == NULL)
+ rv = NULL;
+ else if (access (try, R_OK | W_OK) != 0)
+ rv = NULL;
+ else
+ rv = try;
+ return rv;
+}
+
+static void
+choose_temp_base ()
+{
+ const char *base = NULL;
+ int len;
+
+ base = choose_temp_base_try (getenv ("TMPDIR"), base);
+ base = choose_temp_base_try (getenv ("TMP"), base);
+ base = choose_temp_base_try (getenv ("TEMP"), base);
+
+#ifdef P_tmpdir
+ base = choose_temp_base_try (P_tmpdir, base);
+#endif
+
+ base = choose_temp_base_try ("/usr/tmp", base);
+ base = choose_temp_base_try ("/tmp", base);
+
+ /* If all else fails, use the current directory! */
+ if (base == NULL)
+ base = "./";
+
+ len = strlen (base);
+ temp_filename = xmalloc (len + sizeof("/ccXXXXXX") + 1);
+ strcpy (temp_filename, base);
+ if (len > 0 && temp_filename[len-1] != '/')
+ temp_filename[len++] = '/';
+ strcpy (temp_filename + len, "ccXXXXXX");
+
+ mktemp (temp_filename);
+ if (*temp_filename == '\0')
+ abort ();
+}
+
+/* Execute a job. Stolen from gcc.c. */
+
+#ifndef OS2
+#ifdef __MSDOS__
+
+static int
+pexecute (program, argv)
+ char *program;
+ char *argv[];
+{
+ char *scmd, *rf;
+ FILE *argfile;
+ int i;
+
+ scmd = (char *)malloc (strlen (program) + strlen (temp_filename) + 10);
+ rf = scmd + strlen(program) + 2 + el;
+ sprintf (scmd, "%s.exe @%s.gp", program, temp_filename);
+ argfile = fopen (rf, "w");
+ if (argfile == 0)
+ pfatal_with_name (rf);
+
+ for (i=1; argv[i]; i++)
+ {
+ char *cp;
+ for (cp = argv[i]; *cp; cp++)
+ {
+ if (*cp == '"' || *cp == '\'' || *cp == '\\' || isspace (*cp))
+ fputc ('\\', argfile);
+ fputc (*cp, argfile);
+ }
+ fputc ('\n', argfile);
+ }
+ fclose (argfile);
+
+ i = system (scmd);
+
+ remove (rf);
+
+ if (i == -1)
+ {
+ perror (program);
+ return MIN_FATAL_STATUS << 8;
+ }
+
+ return i << 8;
+}
+
+#else /* not __MSDOS__ */
+
+static int
+pexecute (program, argv)
+ char *program;
+ char *argv[];
+{
+ int pid;
+ int retries, sleep_interval;
+
+ /* Fork a subprocess; wait and retry if it fails. */
+ sleep_interval = 1;
+ for (retries = 0; retries < 4; retries++)
+ {
+ pid = vfork ();
+ if (pid >= 0)
+ break;
+ sleep (sleep_interval);
+ sleep_interval *= 2;
+ }
+
+ switch (pid)
+ {
+ case -1:
+#ifdef vfork
+ perror ("fork");
+#else
+ perror ("vfork");
+#endif
+ exit (1);
+ /* NOTREACHED */
+ return 0;
+
+ case 0: /* child */
+ /* Exec the program. */
+ execvp (program, argv);
+ perror (program);
+ exit (1);
+ /* NOTREACHED */
+ return 0;
+
+ default:
+ /* Return child's process number. */
+ return pid;
+ }
+}
+
+#endif /* not __MSDOS__ */
+#else /* not OS2 */
+
+static int
+pexecute (program, argv)
+ char *program;
+ char *argv[];
+{
+ return spawnvp (1, program, argv);
+}
+#endif /* not OS2 */
projects / deliverable / binutils-gdb.git / blobdiff