#include "libbfd.h"
#include "libnlm.h"
-#define Nlm_External_Fixed_Header NAME(Nlm,External_Fixed_Header)
-#define Nlm_External_Version_Header NAME(Nlm,External_Version_Header)
-#define Nlm_External_Copyright_Header NAME(Nlm,External_Copyright_Header)
-#define Nlm_External_Extended_Header NAME(Nlm,External_Extended_Header)
-#define Nlm_External_Custom_Header NAME(Nlm,External_Custom_Header)
-
-#define nlm_symbol_type NAME(nlm,symbol_type)
-
-#define nlm_get_symtab_upper_bound NAME(bfd_nlm,get_symtab_upper_bound)
-#define nlm_get_symtab NAME(bfd_nlm,get_symtab)
-#define nlm_make_empty_symbol NAME(bfd_nlm,make_empty_symbol)
-#define nlm_print_symbol NAME(bfd_nlm,print_symbol)
-#define nlm_get_symbol_info NAME(bfd_nlm,get_symbol_info)
-#define nlm_set_arch_mach NAME(bfd_nlm,set_arch_mach)
-#define nlm_object_p NAME(bfd_nlm,object_p)
-
-#define MSB (~(~(unsigned long)0 >> 1))
+/* The functions in this file do not use the names they appear to use.
+ This file is actually compiled multiple times, once for each size
+ of NLM target we are using. At each size we use a different name,
+ constructed by the macro nlmNAME. For example, the function which
+ is named nlm_symbol_type below is actually named nlm32_symbol_type
+ in the final executable. */
+
+#define Nlm_External_Fixed_Header NlmNAME(External_Fixed_Header)
+#define Nlm_External_Version_Header NlmNAME(External_Version_Header)
+#define Nlm_External_Copyright_Header NlmNAME(External_Copyright_Header)
+#define Nlm_External_Extended_Header NlmNAME(External_Extended_Header)
+#define Nlm_External_Custom_Header NlmNAME(External_Custom_Header)
+
+#define nlm_symbol_type nlmNAME(symbol_type)
+#define nlm_get_symtab_upper_bound nlmNAME(get_symtab_upper_bound)
+#define nlm_get_symtab nlmNAME(get_symtab)
+#define nlm_make_empty_symbol nlmNAME(make_empty_symbol)
+#define nlm_print_symbol nlmNAME(print_symbol)
+#define nlm_get_symbol_info nlmNAME(get_symbol_info)
+#define nlm_get_reloc_upper_bound nlmNAME(get_reloc_upper_bound)
+#define nlm_canonicalize_reloc nlmNAME(canonicalize_reloc)
+#define nlm_object_p nlmNAME(object_p)
+#define nlm_set_section_contents nlmNAME(set_section_contents)
+#define nlm_write_object_contents nlmNAME(write_object_contents)
+
+#define nlm_swap_fixed_header_in(abfd,src,dst) \
+ (nlm_swap_fixed_header_in_func(abfd))(abfd,src,dst)
+#define nlm_swap_fixed_header_out(abfd,src,dst) \
+ (nlm_swap_fixed_header_out_func(abfd))(abfd,src,dst)
/* Forward declarations of static functions */
static boolean add_bfd_section
PARAMS ((bfd *, char *, file_ptr, bfd_size_type, flagword));
-
-static void nlm_swap_fixed_header_in
- PARAMS ((bfd *, Nlm_External_Fixed_Header *, Nlm_Internal_Fixed_Header *));
-
-static boolean nlm_swap_variable_header_in PARAMS ((bfd *));
-
-static boolean nlm_swap_auxiliary_headers_in PARAMS ((bfd *));
-
-static struct sec *section_from_nlm_index PARAMS ((bfd *, int));
-
-static int nlm_section_from_bfd_section PARAMS ((bfd *, struct sec *));
-
-static boolean nlm_slurp_symbol_table PARAMS ((bfd *, asymbol **));
-
-static int nlm_symbol_from_bfd_symbol
- PARAMS ((bfd *, struct symbol_cache_entry **));
-
-static void nlm_map_symbols PARAMS ((bfd *));
+static boolean nlm_swap_variable_header_in
+ PARAMS ((bfd *));
+static boolean nlm_swap_variable_header_out
+ PARAMS ((bfd *));
+static boolean find_nonzero
+ PARAMS ((PTR, size_t));
+static boolean nlm_swap_auxiliary_headers_in
+ PARAMS ((bfd *));
+static boolean nlm_swap_auxiliary_headers_out
+ PARAMS ((bfd *));
+static boolean nlm_slurp_symbol_table
+ PARAMS ((bfd *));
+static boolean nlm_slurp_reloc_fixups
+ PARAMS ((bfd *));
+static boolean nlm_compute_section_file_positions
+ PARAMS ((bfd *));
+static int nlm_external_reloc_compare
+ PARAMS ((const void *, const void *));
/* Should perhaps use put_offset, put_word, etc. For now, the two versions
can be handled by explicitly specifying 32 bits or "the long type". */
bfd_target *
DEFUN (nlm_object_p, (abfd), bfd * abfd)
{
- Nlm_External_Fixed_Header x_fxdhdr; /* Nlm file header, external form */
- Nlm_Internal_Fixed_Header *i_fxdhdrp; /* Nlm file header, internal form */
- int shindex;
+ struct nlm_obj_tdata *preserved_tdata = nlm_tdata (abfd);
+ boolean (*backend_object_p) PARAMS ((bfd *));
+ PTR x_fxdhdr;
+ Nlm_Internal_Fixed_Header *i_fxdhdrp;
+ const char *signature;
+ enum bfd_architecture arch;
+
+ /* Some NLM formats have a prefix before the standard NLM fixed
+ header. */
+ backend_object_p = nlm_backend_object_p_func (abfd);
+ if (backend_object_p)
+ {
+ if (! (*backend_object_p) (abfd))
+ goto got_wrong_format_error;
+ }
/* Read in the fixed length portion of the NLM header in external format. */
- if (bfd_read ((PTR) &x_fxdhdr, sizeof (x_fxdhdr), 1, abfd) !=
- sizeof (x_fxdhdr))
- {
- bfd_error = system_call_error;
- return (NULL);
- }
+ x_fxdhdr = (PTR) alloca (nlm_fixed_header_size (abfd));
- /* Check to see if we have an NLM file by matching the NLM signature. */
+ if (bfd_read ((PTR) x_fxdhdr, nlm_fixed_header_size (abfd), 1, abfd) !=
+ nlm_fixed_header_size (abfd))
+ goto got_wrong_format_error;
- if (strncmp (x_fxdhdr.signature, NLM_SIGNATURE, NLM_SIGNATURE_SIZE) != 0)
+ /* Allocate an instance of the nlm_obj_tdata structure and hook it up to
+ the tdata pointer in the bfd. */
+
+ nlm_tdata (abfd) = (struct nlm_obj_tdata *)
+ bfd_zalloc (abfd, sizeof (struct nlm_obj_tdata));
+ if (nlm_tdata (abfd) == NULL)
{
- wrong:
- bfd_error = wrong_format;
- return (NULL);
+ bfd_error = no_memory;
+ goto got_no_match;
}
+ i_fxdhdrp = nlm_fixed_header (abfd);
+ nlm_swap_fixed_header_in (abfd, x_fxdhdr, i_fxdhdrp);
+
+ /* Check to see if we have an NLM file for this backend by matching
+ the NLM signature. */
+
+ signature = nlm_signature (abfd);
+ if (signature != NULL
+ && *signature != '\0'
+ && strncmp ((char *) i_fxdhdrp->signature, signature,
+ NLM_SIGNATURE_SIZE) != 0)
+ goto got_wrong_format_error;
+
/* There's no supported way to discover the endianess of an NLM, so test for
a sane version number after doing byte swapping appropriate for this
XVEC. (Hack alert!) */
- if (get_word (abfd, (bfd_byte *) x_fxdhdr.version) > 0xFFFF)
- {
- goto wrong;
- }
+ if (i_fxdhdrp->version > 0xFFFF)
+ goto got_wrong_format_error;
/* There's no supported way to check for 32 bit versus 64 bit addresses,
so ignore this distinction for now. (FIXME) */
- /* Allocate an instance of the nlm_obj_tdata structure and hook it up to
- the tdata pointer in the bfd. */
-
- nlm_tdata (abfd) = (struct nlm_obj_tdata *)
- bfd_zalloc (abfd, sizeof (struct nlm_obj_tdata));
- if (nlm_tdata (abfd) == NULL)
- {
- bfd_error = no_memory;
- return (NULL);
- }
-
- /* FIXME: Any `wrong' exits below here will leak memory (tdata). */
+ /* FIXME: Any return(NULL) exits below here will leak memory (tdata).
+ And a memory leak also means we lost the real tdata info we wanted
+ to save, because it was in the leaked memory. */
/* Swap in the rest of the fixed length header. */
- i_fxdhdrp = nlm_fixed_header (abfd);
- nlm_swap_fixed_header_in (abfd, &x_fxdhdr, i_fxdhdrp);
-
if (!nlm_swap_variable_header_in (abfd)
|| !nlm_swap_auxiliary_headers_in (abfd)
|| !add_bfd_section (abfd, NLM_CODE_NAME,
i_fxdhdrp -> codeImageOffset,
i_fxdhdrp -> codeImageSize,
- SEC_CODE | SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS)
+ (SEC_CODE | SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
+ | SEC_RELOC))
|| !add_bfd_section (abfd, NLM_INITIALIZED_DATA_NAME,
i_fxdhdrp -> dataImageOffset,
i_fxdhdrp -> dataImageSize,
- SEC_DATA | SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS)
+ (SEC_DATA | SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
+ | SEC_RELOC))
|| !add_bfd_section (abfd, NLM_UNINITIALIZED_DATA_NAME,
(file_ptr) 0,
i_fxdhdrp -> uninitializedDataSize,
- SEC_DATA | SEC_ALLOC))
- {
- return (NULL);
- }
+ SEC_ALLOC))
+ goto got_wrong_format_error;
+
+ if (nlm_fixed_header (abfd)->numberOfRelocationFixups != 0
+ || nlm_fixed_header (abfd)->numberOfExternalReferences != 0)
+ abfd->flags |= HAS_RELOC;
+ if (nlm_fixed_header (abfd)->numberOfPublics != 0
+ || nlm_fixed_header (abfd)->numberOfDebugRecords != 0
+ || nlm_fixed_header (abfd)->numberOfExternalReferences != 0)
+ abfd->flags |= HAS_SYMS;
+
+ arch = nlm_architecture (abfd);
+ if (arch != bfd_arch_unknown)
+ bfd_default_set_arch_mach (abfd, arch, (unsigned long) 0);
return (abfd -> xvec);
+
+ got_wrong_format_error:
+ bfd_error = wrong_format;
+ got_no_match:
+ nlm_tdata (abfd) = preserved_tdata;
+ return (NULL);
}
/* Add a section to the bfd. */
return (true);
}
-
-/* Translate an NLM fixed length file header in external format into an NLM
- file header in internal format. */
-
-static void
-DEFUN (nlm_swap_fixed_header_in, (abfd, src, dst),
- bfd * abfd AND
- Nlm_External_Fixed_Header * src AND
- Nlm_Internal_Fixed_Header * dst)
-{
- memcpy (dst -> signature, src -> signature, NLM_SIGNATURE_SIZE);
- memcpy (dst -> moduleName, src -> moduleName, NLM_MODULE_NAME_SIZE);
- dst -> version =
- get_word (abfd, (bfd_byte *) src -> version);
- dst -> codeImageOffset =
- get_word (abfd, (bfd_byte *) src -> codeImageOffset);
- dst -> codeImageSize =
- get_word (abfd, (bfd_byte *) src -> codeImageSize);
- dst -> dataImageOffset =
- get_word (abfd, (bfd_byte *) src -> dataImageOffset);
- dst -> dataImageSize =
- get_word (abfd, (bfd_byte *) src -> dataImageSize);
- dst -> uninitializedDataSize =
- get_word (abfd, (bfd_byte *) src -> uninitializedDataSize);
- dst -> customDataOffset =
- get_word (abfd, (bfd_byte *) src -> customDataOffset);
- dst -> customDataSize =
- get_word (abfd, (bfd_byte *) src -> customDataSize);
- dst -> moduleDependencyOffset =
- get_word (abfd, (bfd_byte *) src -> moduleDependencyOffset);
- dst -> numberOfModuleDependencies =
- get_word (abfd, (bfd_byte *) src -> numberOfModuleDependencies);
- dst -> relocationFixupOffset =
- get_word (abfd, (bfd_byte *) src -> relocationFixupOffset);
- dst -> numberOfRelocationFixups =
- get_word (abfd, (bfd_byte *) src -> numberOfRelocationFixups);
- dst -> externalReferencesOffset =
- get_word (abfd, (bfd_byte *) src -> externalReferencesOffset);
- dst -> numberOfExternalReferences =
- get_word (abfd, (bfd_byte *) src -> numberOfExternalReferences);
- dst -> publicsOffset =
- get_word (abfd, (bfd_byte *) src -> publicsOffset);
- dst -> numberOfPublics =
- get_word (abfd, (bfd_byte *) src -> numberOfPublics);
- dst -> debugInfoOffset =
- get_word (abfd, (bfd_byte *) src -> debugInfoOffset);
- dst -> numberOfDebugRecords =
- get_word (abfd, (bfd_byte *) src -> numberOfDebugRecords);
- dst -> codeStartOffset =
- get_word (abfd, (bfd_byte *) src -> codeStartOffset);
- dst -> exitProcedureOffset =
- get_word (abfd, (bfd_byte *) src -> exitProcedureOffset);
- dst -> checkUnloadProcedureOffset =
- get_word (abfd, (bfd_byte *) src -> checkUnloadProcedureOffset);
- dst -> moduleType =
- get_word (abfd, (bfd_byte *) src -> moduleType);
- dst -> flags =
- get_word (abfd, (bfd_byte *) src -> flags);
-}
-
/* Read and swap in the variable length header. All the fields must
exist in the NLM, and must exist in the order they are read here. */
DEFUN (nlm_swap_variable_header_in, (abfd),
bfd * abfd)
{
- unsigned char temp [TARGET_LONG_SIZE];
+ unsigned char temp [NLM_TARGET_LONG_SIZE];
/* Read the description length and text members. */
return (true);
}
+/* Swap and write out the variable length header. All the fields must
+ exist in the NLM, and must exist in this order. */
+
+static boolean
+DEFUN (nlm_swap_variable_header_out, (abfd),
+ bfd * abfd)
+{
+ unsigned char temp [NLM_TARGET_LONG_SIZE];
+
+ /* Write the description length and text members. */
+
+ if (bfd_write ((PTR) &nlm_variable_header (abfd) -> descriptionLength,
+ sizeof (nlm_variable_header (abfd) -> descriptionLength),
+ 1, abfd) !=
+ sizeof (nlm_variable_header (abfd) -> descriptionLength))
+ {
+ bfd_error = system_call_error;
+ return (false);
+ }
+ if (bfd_write ((PTR) nlm_variable_header (abfd) -> descriptionText,
+ nlm_variable_header (abfd) -> descriptionLength + 1,
+ 1, abfd) !=
+ nlm_variable_header (abfd) -> descriptionLength + 1)
+ {
+ bfd_error = system_call_error;
+ return (false);
+ }
+
+ /* Convert and write the stackSize field. */
+
+ put_word (abfd, (bfd_vma) nlm_variable_header (abfd) -> stackSize,
+ (bfd_byte *) temp);
+ if (bfd_write ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp))
+ {
+ bfd_error = system_call_error;
+ return (false);
+ }
+
+ /* Convert and write the reserved field. */
+
+ put_word (abfd, (bfd_vma) nlm_variable_header (abfd) -> reserved,
+ (bfd_byte *) temp);
+ if (bfd_write ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp))
+ {
+ bfd_error = system_call_error;
+ return (false);
+ }
+
+ /* Write the oldThreadName field. This field is a fixed length string. */
+
+ if (bfd_write ((PTR) nlm_variable_header (abfd) -> oldThreadName,
+ sizeof (nlm_variable_header (abfd) -> oldThreadName),
+ 1, abfd) !=
+ sizeof (nlm_variable_header (abfd) -> oldThreadName))
+ {
+ bfd_error = system_call_error;
+ return (false);
+ }
+
+ /* Write the screen name length and text members. */
+
+ if (bfd_write ((PTR) &nlm_variable_header (abfd) -> screenNameLength,
+ sizeof (nlm_variable_header (abfd) -> screenNameLength),
+ 1, abfd) !=
+ sizeof (nlm_variable_header (abfd) -> screenNameLength))
+ {
+ bfd_error = system_call_error;
+ return (false);
+ }
+ if (bfd_write ((PTR) nlm_variable_header (abfd) -> screenName,
+ nlm_variable_header (abfd) -> screenNameLength + 1,
+ 1, abfd) !=
+ nlm_variable_header (abfd) -> screenNameLength + 1)
+ {
+ bfd_error = system_call_error;
+ return (false);
+ }
+
+ /* Write the thread name length and text members. */
+
+ if (bfd_write ((PTR) &nlm_variable_header (abfd) -> threadNameLength,
+ sizeof (nlm_variable_header (abfd) -> threadNameLength),
+ 1, abfd) !=
+ sizeof (nlm_variable_header (abfd) -> threadNameLength))
+ {
+ bfd_error = system_call_error;
+ return (false);
+ }
+ if (bfd_write ((PTR) nlm_variable_header (abfd) -> threadName,
+ nlm_variable_header (abfd) -> threadNameLength + 1,
+ 1, abfd) !=
+ nlm_variable_header (abfd) -> threadNameLength + 1)
+ {
+ bfd_error = system_call_error;
+ return (false);
+ }
+ return (true);
+}
+
/* Read and swap in the contents of all the auxiliary headers. Because of
the braindead design, we have to do strcmps on strings of indeterminate
length to figure out what each auxiliary header is. Even worse, we have
DEFUN (nlm_swap_auxiliary_headers_in, (abfd),
bfd * abfd)
{
- unsigned char temp [TARGET_LONG_SIZE];
- unsigned char tempstr [16];
+ char tempstr [16];
long position;
for (;;)
get_word (abfd, (bfd_byte *) thdr.sharedPublicsOffset);
nlm_extended_header (abfd) -> sharedPublicsCount =
get_word (abfd, (bfd_byte *) thdr.sharedPublicsCount);
+ nlm_extended_header (abfd) -> sharedDebugRecordOffset =
+ get_word (abfd, (bfd_byte *) thdr.sharedDebugRecordOffset);
+ nlm_extended_header (abfd) -> sharedDebugRecordCount =
+ get_word (abfd, (bfd_byte *) thdr.sharedDebugRecordCount);
nlm_extended_header (abfd) -> SharedInitializationOffset =
get_word (abfd, (bfd_byte *) thdr.sharedInitializationOffset);
nlm_extended_header (abfd) -> SharedExitProcedureOffset =
}
else if (strncmp (tempstr, "CoPyRiGhT=", 10) == 0)
{
- Nlm_External_Copyright_Header thdr;
- if (bfd_read ((PTR) &thdr, sizeof (thdr), 1, abfd) != sizeof (thdr))
+ if (bfd_read ((PTR) nlm_copyright_header (abfd)->stamp,
+ sizeof (nlm_copyright_header (abfd)->stamp),
+ 1, abfd)
+ != sizeof (nlm_copyright_header (abfd)->stamp))
+ {
+ bfd_error = system_call_error;
+ return (false);
+ }
+ if (bfd_read ((PTR) &(nlm_copyright_header (abfd)
+ ->copyrightMessageLength),
+ 1, 1, abfd) != 1)
{
bfd_error = system_call_error;
return (false);
}
- memcpy (nlm_copyright_header (abfd) -> stamp, thdr.stamp,
- sizeof (thdr.stamp));
- nlm_copyright_header (abfd) -> copyrightMessageLength =
- get_word (abfd, (bfd_byte *) thdr.copyrightMessageLength);
/* The copyright message is a variable length string. */
if (bfd_read ((PTR) nlm_copyright_header (abfd) -> copyrightMessage,
nlm_copyright_header (abfd) -> copyrightMessageLength + 1,
break;
}
}
+ return (true);
+}
+
+/* Return whether there is a non-zero byte in a memory block. */
+
+static boolean
+find_nonzero (buf, size)
+ PTR buf;
+ size_t size;
+{
+ char *p = (char *) buf;
+
+ while (size-- != 0)
+ if (*p++ != 0)
+ return true;
+ return false;
+}
+
+/* Swap out the contents of the auxiliary headers. We create those
+ auxiliary headers which have been set non-zero. We do not require
+ the caller to set up the stamp fields. */
+
+static boolean
+nlm_swap_auxiliary_headers_out (abfd)
+ bfd *abfd;
+{
+ /* Write out the version header if there is one. */
+ if (find_nonzero ((PTR) nlm_version_header (abfd),
+ sizeof (Nlm_Internal_Version_Header)))
+ {
+ Nlm_External_Version_Header thdr;
+
+ memcpy (thdr.stamp, "VeRsIoN#", 8);
+ put_word (abfd, (bfd_vma) nlm_version_header (abfd) -> majorVersion,
+ (bfd_byte *) thdr.majorVersion);
+ put_word (abfd, (bfd_vma) nlm_version_header (abfd) -> minorVersion,
+ (bfd_byte *) thdr.minorVersion);
+ put_word (abfd, (bfd_vma) nlm_version_header (abfd) -> revision,
+ (bfd_byte *) thdr.revision);
+ put_word (abfd, (bfd_vma) nlm_version_header (abfd) -> year,
+ (bfd_byte *) thdr.year);
+ put_word (abfd, (bfd_vma) nlm_version_header (abfd) -> month,
+ (bfd_byte *) thdr.month);
+ put_word (abfd, (bfd_vma) nlm_version_header (abfd) -> day,
+ (bfd_byte *) thdr.day);
+ if (bfd_write ((PTR) &thdr, sizeof (thdr), 1, abfd) != sizeof (thdr))
+ {
+ bfd_error = system_call_error;
+ return false;
+ }
+ }
+
+ /* Write out the extended header if there is one. */
+ if (find_nonzero ((PTR) nlm_extended_header (abfd),
+ sizeof (Nlm_Internal_Extended_Header)))
+ {
+ Nlm_External_Extended_Header thdr;
+
+ memcpy (thdr.stamp, "MeSsAgEs", 8);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> languageID,
+ (bfd_byte *) thdr.languageID);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> messageFileOffset,
+ (bfd_byte *) thdr.messageFileOffset);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> messageFileLength,
+ (bfd_byte *) thdr.messageFileLength);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> messageCount,
+ (bfd_byte *) thdr.messageCount);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> helpFileOffset,
+ (bfd_byte *) thdr.helpFileOffset);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> helpFileLength,
+ (bfd_byte *) thdr.helpFileLength);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> RPCDataOffset,
+ (bfd_byte *) thdr.RPCDataOffset);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> RPCDataLength,
+ (bfd_byte *) thdr.RPCDataLength);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> sharedCodeOffset,
+ (bfd_byte *) thdr.sharedCodeOffset);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> sharedCodeLength,
+ (bfd_byte *) thdr.sharedCodeLength);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> sharedDataOffset,
+ (bfd_byte *) thdr.sharedDataOffset);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> sharedDataLength,
+ (bfd_byte *) thdr.sharedDataLength);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> sharedRelocationFixupOffset,
+ (bfd_byte *) thdr.sharedRelocationFixupOffset);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> sharedRelocationFixupCount,
+ (bfd_byte *) thdr.sharedRelocationFixupCount);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> sharedExternalReferenceOffset,
+ (bfd_byte *) thdr.sharedExternalReferenceOffset);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> sharedExternalReferenceCount,
+ (bfd_byte *) thdr.sharedExternalReferenceCount);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> sharedPublicsOffset,
+ (bfd_byte *) thdr.sharedPublicsOffset);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> sharedPublicsCount,
+ (bfd_byte *) thdr.sharedPublicsCount);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> sharedDebugRecordOffset,
+ (bfd_byte *) thdr.sharedDebugRecordOffset);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> sharedDebugRecordCount,
+ (bfd_byte *) thdr.sharedDebugRecordCount);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> SharedInitializationOffset,
+ (bfd_byte *) thdr.sharedInitializationOffset);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> SharedExitProcedureOffset,
+ (bfd_byte *) thdr.SharedExitProcedureOffset);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> productID,
+ (bfd_byte *) thdr.productID);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> reserved0,
+ (bfd_byte *) thdr.reserved0);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> reserved1,
+ (bfd_byte *) thdr.reserved1);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> reserved2,
+ (bfd_byte *) thdr.reserved2);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> reserved3,
+ (bfd_byte *) thdr.reserved3);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> reserved4,
+ (bfd_byte *) thdr.reserved4);
+ put_word (abfd,
+ (bfd_vma) nlm_extended_header (abfd) -> reserved5,
+ (bfd_byte *) thdr.reserved5);
+ if (bfd_write ((PTR) &thdr, sizeof (thdr), 1, abfd) != sizeof (thdr))
+ {
+ bfd_error = system_call_error;
+ return false;
+ }
+ }
+
+ /* Write out the custom header if there is one. */
+ if (find_nonzero ((PTR) nlm_custom_header (abfd),
+ sizeof (Nlm_Internal_Custom_Header)))
+ {
+ Nlm_External_Custom_Header thdr;
+
+ /* Right now we assume the custom header is always the suggested
+ format for alternate debugging records. */
+ BFD_ASSERT (nlm_custom_header (abfd) -> dataLength == 8);
+
+ memcpy (thdr.stamp, "CuStHeAd", 8);
+ put_word (abfd, (bfd_vma) nlm_custom_header (abfd) -> dataLength,
+ (bfd_byte *) thdr.dataLength);
+ put_word (abfd, (bfd_vma) nlm_custom_header (abfd) -> debugRecOffset,
+ (bfd_byte *) thdr.debugRecOffset);
+ put_word (abfd, (bfd_vma) nlm_custom_header (abfd) -> debugRecLength,
+ (bfd_byte *) thdr.debugRecLength);
+ if (bfd_write ((PTR) &thdr, sizeof (thdr), 1, abfd) != sizeof (thdr))
+ {
+ bfd_error = system_call_error;
+ return false;
+ }
+ }
+
+ /* Write out the copyright header if there is one. */
+ if (find_nonzero ((PTR) nlm_copyright_header (abfd),
+ sizeof (Nlm_Internal_Copyright_Header)))
+ {
+ Nlm_External_Copyright_Header thdr;
+
+ memcpy (thdr.stamp, "CoPyRiGhT=", 10);
+ if (bfd_write ((PTR) thdr.stamp, sizeof (thdr.stamp), 1, abfd)
+ != sizeof (thdr.stamp))
+ {
+ bfd_error = system_call_error;
+ return false;
+ }
+ thdr.copyrightMessageLength[0] =
+ nlm_copyright_header (abfd)->copyrightMessageLength;
+ if (bfd_write ((PTR) thdr.copyrightMessageLength, 1, 1, abfd) != 1)
+ {
+ bfd_error = system_call_error;
+ return false;
+ }
+ /* The copyright message is a variable length string. */
+ if (bfd_write ((PTR) nlm_copyright_header (abfd) -> copyrightMessage,
+ nlm_copyright_header (abfd) -> copyrightMessageLength + 1,
+ 1, abfd) !=
+ nlm_copyright_header (abfd) -> copyrightMessageLength + 1)
+ {
+ bfd_error = system_call_error;
+ return false;
+ }
+ }
+
+ return true;
}
/* We read the NLM's public symbols and use it to generate a bfd symbol
unsigned int symtab_size = 0;
i_fxdhdrp = nlm_fixed_header (abfd);
- symcount = i_fxdhdrp -> numberOfPublics;
+ symcount = (i_fxdhdrp -> numberOfPublics
+ + i_fxdhdrp -> numberOfDebugRecords
+ + i_fxdhdrp -> numberOfExternalReferences);
symtab_size = (symcount + 1) * (sizeof (asymbol));
return (symtab_size);
}
symbol table fails. */
unsigned int
-DEFUN (nlm_get_symtab, (abfd, alocation),
- bfd *abfd AND
- asymbol **alocation)
+nlm_get_symtab (abfd, alocation)
+ bfd *abfd;
+ asymbol **alocation;
{
- nlm_slurp_symbol_table (abfd, alocation);
- return (bfd_get_symcount (abfd));
+ nlm_symbol_type *symbase;
+ bfd_size_type counter = 0;
+
+ if (nlm_slurp_symbol_table (abfd) == false)
+ return 0;
+ symbase = nlm_get_symbols (abfd);
+ while (counter < bfd_get_symcount (abfd))
+ {
+ *alocation++ = &symbase->symbol;
+ symbase++;
+ counter++;
+ }
+ *alocation = (asymbol *) NULL;
+ return bfd_get_symcount (abfd);
}
+/* Make an NLM symbol. There is nothing special to do here. */
+
asymbol *
-DEFUN (nlm_make_empty_symbol, (abfd), /* FIXME! */
- bfd * abfd)
+nlm_make_empty_symbol (abfd)
+ bfd * abfd;
{
- asymbol *new = (asymbol *) bfd_zalloc (abfd, sizeof (asymbol));
- new -> the_bfd = abfd;
- return new;
+ nlm_symbol_type *new;
+
+ new = (nlm_symbol_type *) bfd_zalloc (abfd, sizeof (nlm_symbol_type));
+ if (new)
+ new->symbol.the_bfd = abfd;
+ return &new->symbol;
}
+/* Get symbol information. */
+
void
-DEFUN (nlm_get_symbol_info, (ignore_abfd, symbol, ret),
- bfd * ignore_abfd AND
- asymbol * symbol AND
- symbol_info * ret)
+nlm_get_symbol_info (ignore_abfd, symbol, ret)
+ bfd * ignore_abfd;
+ asymbol * symbol;
+ symbol_info * ret;
{
bfd_symbol_info (symbol, ret);
}
-boolean
-DEFUN (nlm_set_arch_mach, (abfd, arch, machine),
- bfd * abfd AND
- enum bfd_architecture arch AND
- unsigned long machine)
+/* Print symbol information. */
+
+void
+nlm_print_symbol (abfd, afile, symbol, how)
+ bfd *abfd;
+ PTR afile;
+ asymbol *symbol;
+ bfd_print_symbol_type how;
{
- return false;
+ FILE *file = (FILE *) afile;
+
+ switch (how)
+ {
+ case bfd_print_symbol_name:
+ case bfd_print_symbol_more:
+ if (symbol->name)
+ fprintf (file,"%s", symbol->name);
+ break;
+ case bfd_print_symbol_all:
+ bfd_print_symbol_vandf ((PTR) file, symbol);
+ fprintf (file, " %-5s", symbol->section->name);
+ if (symbol->name)
+ fprintf (file," %s", symbol->name);
+ break;
+ }
}
/* Slurp in nlm symbol table.
N bytes the symbol name
4 bytes the symbol offset from start of it's section
- Note that we currently ignore the internal debug records. There is
- a lot of duplication between the export records and the internal debug
- records. We may in the future, want to merge the information from the
- debug records with the information from the export records to produce
- a more complete symbol table, treating additional information from the
- debug records as static symbols. (FIXME)
+ We also read in the debugging symbols and import records. Import
+ records are treated as undefined symbols. As we read the import
+ records we also read in the associated reloc information, which is
+ attached to the symbol.
- If SYMPTRS is non-NULL, the bfd symbols are copied to where it points.
+ The bfd symbols are copied to SYMPTRS.
When we return, the bfd symcount is either zero or contains the correct
number of symbols.
*/
static boolean
-DEFUN (nlm_slurp_symbol_table, (abfd, symptrs),
- bfd *abfd AND
- asymbol **symptrs) /* Buffer for generated bfd symbols */
+nlm_slurp_symbol_table (abfd)
+ bfd *abfd;
{
Nlm_Internal_Fixed_Header *i_fxdhdrp; /* Nlm file header, internal form */
- int symcount; /* Number of external NLM symbols */
- int idx;
+ bfd_size_type totsymcount; /* Number of NLM symbols */
+ bfd_size_type symcount; /* Counter of NLM symbols */
nlm_symbol_type *sym; /* Pointer to current bfd symbol */
- nlm_symbol_type *symbase; /* Buffer for generated bfd symbols */
- char symlength; /* Symbol length read into here */
- long symoffset; /* Symbol offset read into here */
+ unsigned char symlength; /* Symbol length read into here */
+ unsigned char symtype; /* Type of debugging symbol */
+ bfd_byte temp[NLM_TARGET_LONG_SIZE]; /* Symbol offsets read into here */
+ boolean (*read_import_func) PARAMS ((bfd *, nlm_symbol_type *));
+ boolean (*set_public_section_func) PARAMS ((bfd *, nlm_symbol_type *));
- if (bfd_get_outsymbols (abfd) != NULL)
- {
- return (true);
- }
+ if (nlm_get_symbols (abfd) != NULL)
+ return (true);
/* Read each raw NLM symbol, using the information to create a canonical bfd
symbol table entry.
abfd -> symcount = 0;
i_fxdhdrp = nlm_fixed_header (abfd);
- symcount = i_fxdhdrp -> numberOfPublics;
- if (symcount == 0)
+ totsymcount = (i_fxdhdrp -> numberOfPublics
+ + i_fxdhdrp -> numberOfDebugRecords
+ + i_fxdhdrp -> numberOfExternalReferences);
+ if (totsymcount == 0)
{
return (true);
}
+
if (bfd_seek (abfd, i_fxdhdrp -> publicsOffset, SEEK_SET) == -1)
{
bfd_error = system_call_error;
return (false);
}
- symbase = (nlm_symbol_type *)
- bfd_zalloc (abfd, symcount * sizeof (nlm_symbol_type));
- sym = symbase;
+
+ sym = ((nlm_symbol_type *)
+ bfd_zalloc (abfd, totsymcount * sizeof (nlm_symbol_type)));
+ if (!sym)
+ {
+ bfd_error = no_memory;
+ return false;
+ }
+ nlm_set_symbols (abfd, sym);
/* We use the bfd's symcount directly as the control count, so that early
termination of the loop leaves the symcount correct for the symbols that
were read. */
+ set_public_section_func = nlm_set_public_section_func (abfd);
+ symcount = i_fxdhdrp -> numberOfPublics;
while (abfd -> symcount < symcount)
{
if (bfd_read ((PTR) &symlength, sizeof (symlength), 1, abfd)
}
sym -> symbol.the_bfd = abfd;
sym -> symbol.name = bfd_alloc (abfd, symlength + 1);
+ if (!sym -> symbol.name)
+ {
+ bfd_error = no_memory;
+ return false;
+ }
if (bfd_read ((PTR) sym -> symbol.name, symlength, 1, abfd)
!= symlength)
{
bfd_error = system_call_error;
return (false);
}
- if (bfd_read ((PTR) &symoffset, sizeof (symoffset), 1, abfd)
- != sizeof (symoffset))
+ /* Cast away const. */
+ ((char *) (sym -> symbol.name))[symlength] = '\0';
+ if (bfd_read ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp))
{
bfd_error = system_call_error;
return (false);
}
sym -> symbol.flags = BSF_GLOBAL | BSF_EXPORT;
- sym -> symbol.value = get_word (abfd, (bfd_byte *) &symoffset);
- if (sym -> symbol.value & MSB)
+ sym -> symbol.value = get_word (abfd, temp);
+ if (set_public_section_func)
{
- sym -> symbol.value &= ~MSB;
- sym -> symbol.flags |= BSF_FUNCTION;
- sym -> symbol.section =
- bfd_get_section_by_name (abfd, NLM_CODE_NAME);
+ /* Most backends can use the code below, but unfortunately
+ some use a different scheme. */
+ if ((*set_public_section_func) (abfd, sym) == false)
+ return false;
}
else
{
- sym -> symbol.section =
- bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME);
+ if (sym -> symbol.value & NLM_HIBIT)
+ {
+ sym -> symbol.value &= ~NLM_HIBIT;
+ sym -> symbol.flags |= BSF_FUNCTION;
+ sym -> symbol.section =
+ bfd_get_section_by_name (abfd, NLM_CODE_NAME);
+ }
+ else
+ {
+ sym -> symbol.section =
+ bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME);
+ }
}
+ sym -> rcnt = 0;
abfd -> symcount++;
sym++;
}
- /* Fill in the user's symbol pointer vector if needed. */
+ /* Read the debugging records. */
- if (symptrs != NULL)
+ if (i_fxdhdrp -> numberOfDebugRecords > 0)
{
- sym = symbase;
- symcount = abfd -> symcount;
- while (symcount-- > 0)
+ if (bfd_seek (abfd, i_fxdhdrp -> debugInfoOffset, SEEK_SET) == -1)
{
- *symptrs++ = &sym -> symbol;
+ bfd_error = system_call_error;
+ return (false);
+ }
+
+ symcount += i_fxdhdrp -> numberOfDebugRecords;
+ while (abfd -> symcount < symcount)
+ {
+ if ((bfd_read ((PTR) &symtype, sizeof (symtype), 1, abfd)
+ != sizeof (symtype))
+ || bfd_read ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp)
+ || (bfd_read ((PTR) &symlength, sizeof (symlength), 1, abfd)
+ != sizeof (symlength)))
+ {
+ bfd_error = system_call_error;
+ return false;
+ }
+ sym -> symbol.the_bfd = abfd;
+ sym -> symbol.name = bfd_alloc (abfd, symlength + 1);
+ if (!sym -> symbol.name)
+ {
+ bfd_error = no_memory;
+ return false;
+ }
+ if (bfd_read ((PTR) sym -> symbol.name, symlength, 1, abfd)
+ != symlength)
+ {
+ bfd_error = system_call_error;
+ return (false);
+ }
+ /* Cast away const. */
+ ((char *) (sym -> symbol.name))[symlength] = '\0';
+ sym -> symbol.flags = BSF_LOCAL;
+ sym -> symbol.value = get_word (abfd, temp);
+ if (symtype == 0)
+ {
+ sym -> symbol.section =
+ bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME);
+ }
+ else if (symtype == 1)
+ {
+ sym -> symbol.flags |= BSF_FUNCTION;
+ sym -> symbol.section =
+ bfd_get_section_by_name (abfd, NLM_CODE_NAME);
+ }
+ else
+ {
+ sym -> symbol.section = &bfd_abs_section;
+ }
+ sym -> rcnt = 0;
+ abfd -> symcount++;
sym++;
}
- *symptrs = NULL; /* Final NULL pointer */
+ }
+
+ /* Read in the import records. We can only do this if we know how
+ to read relocs for this target. */
+
+ read_import_func = nlm_read_import_func (abfd);
+ if (read_import_func != NULL)
+ {
+ if (bfd_seek (abfd, i_fxdhdrp -> externalReferencesOffset, SEEK_SET)
+ == -1)
+ {
+ bfd_error = system_call_error;
+ return (false);
+ }
+
+ symcount += i_fxdhdrp -> numberOfExternalReferences;
+ while (abfd -> symcount < symcount)
+ {
+ if ((*read_import_func) (abfd, sym) == false)
+ return false;
+ sym++;
+ abfd->symcount++;
+ }
}
return (true);
}
+\f
+/* Get the relocs for an NLM file. There are two types of relocs.
+ Imports are relocs against symbols defined in other NLM files. We
+ treat these as relocs against global symbols. Relocation fixups
+ are internal relocs.
+
+ The actual format used to store the relocs is machine specific. */
+
+/* Read in the relocation fixup information. This is stored in
+ nlm_relocation_fixups, an array of arelent structures, and
+ nlm_relocation_fixup_secs, an array of section pointers. The
+ section pointers are needed because the relocs are not sorted by
+ section. */
+
+static boolean
+nlm_slurp_reloc_fixups (abfd)
+ bfd *abfd;
+{
+ boolean (*read_func) PARAMS ((bfd *, nlm_symbol_type *, asection **,
+ arelent *));
+ bfd_size_type count;
+ arelent *rels;
+ asection **secs;
+
+ if (nlm_relocation_fixups (abfd) != NULL)
+ return true;
+ read_func = nlm_read_reloc_func (abfd);
+ if (read_func == NULL)
+ return true;
+
+ if (bfd_seek (abfd, nlm_fixed_header (abfd)->relocationFixupOffset,
+ SEEK_SET) != 0)
+ {
+ bfd_error = system_call_error;
+ return false;
+ }
+
+ count = nlm_fixed_header (abfd)->numberOfRelocationFixups;
+ rels = (arelent *) bfd_alloc (abfd, count * sizeof (arelent));
+ secs = (asection **) bfd_alloc (abfd, count * sizeof (asection *));
+ if (rels == NULL || secs == NULL)
+ {
+ bfd_error = no_memory;
+ return false;
+ }
+ nlm_relocation_fixups (abfd) = rels;
+ nlm_relocation_fixup_secs (abfd) = secs;
+
+ /* We have to read piece by piece, because we don't know how large
+ the machine specific reloc information is. */
+ while (count-- != 0)
+ {
+ if ((*read_func) (abfd, (nlm_symbol_type *) NULL, secs, rels) == false)
+ {
+ nlm_relocation_fixups (abfd) = NULL;
+ nlm_relocation_fixup_secs (abfd) = NULL;
+ return false;
+ }
+ ++secs;
+ ++rels;
+ }
+
+ return true;
+}
+
+/* Get the number of relocs. This really just returns an upper bound,
+ since it does not attempt to distinguish them based on the section.
+ That will be handled when they are actually read. */
+
+unsigned int
+nlm_get_reloc_upper_bound (abfd, sec)
+ bfd *abfd;
+ asection *sec;
+{
+ nlm_symbol_type *syms;
+ bfd_size_type count;
+ unsigned int ret;
+
+ /* If we don't know how to read relocs, just return 0. */
+ if (nlm_read_reloc_func (abfd) == NULL)
+ return 0;
+ /* Make sure we have either the code or the data section. */
+ if ((bfd_get_section_flags (abfd, sec) & (SEC_CODE | SEC_DATA)) == 0)
+ return 0;
+
+ syms = nlm_get_symbols (abfd);
+ if (syms == NULL)
+ {
+ if (nlm_slurp_symbol_table (abfd) == false)
+ return 0;
+ syms = nlm_get_symbols (abfd);
+ }
+
+ ret = nlm_fixed_header (abfd)->numberOfRelocationFixups;
+
+ count = bfd_get_symcount (abfd);
+ while (count-- != 0)
+ {
+ ret += syms->rcnt;
+ ++syms;
+ }
+
+ return (ret + 1) * sizeof (arelent *);
+}
+
+/* Get the relocs themselves. */
+
+unsigned int
+nlm_canonicalize_reloc (abfd, sec, relptr, symbols)
+ bfd *abfd;
+ asection *sec;
+ arelent **relptr;
+ asymbol **symbols;
+{
+ arelent *rels;
+ asection **secs;
+ bfd_size_type count, i;
+ unsigned int ret;
+
+ /* Get the relocation fixups. */
+ rels = nlm_relocation_fixups (abfd);
+ if (rels == NULL)
+ {
+ if (nlm_slurp_reloc_fixups (abfd) == false)
+ return 0;
+ rels = nlm_relocation_fixups (abfd);
+ if (rels == NULL)
+ return 0;
+ }
+ secs = nlm_relocation_fixup_secs (abfd);
+
+ ret = 0;
+ count = nlm_fixed_header (abfd)->numberOfRelocationFixups;
+ for (i = 0; i < count; i++, rels++, secs++)
+ {
+ if (*secs == sec)
+ {
+ *relptr++ = rels;
+ ++ret;
+ }
+ }
+
+ /* Get the import symbols. */
+ count = bfd_get_symcount (abfd);
+ for (i = 0; i < count; i++, symbols++)
+ {
+ asymbol *sym;
+
+ sym = *symbols;
+ if (bfd_asymbol_flavour (sym) == bfd_target_nlm_flavour)
+ {
+ nlm_symbol_type *nlm_sym;
+ bfd_size_type j;
+
+ nlm_sym = (nlm_symbol_type *) sym;
+ for (j = 0; j < nlm_sym->rcnt; j++)
+ {
+ if (nlm_sym->relocs[j].section == sec)
+ {
+ *relptr = &nlm_sym->relocs[j].reloc;
+ (*relptr)->sym_ptr_ptr = symbols;
+ ++relptr;
+ ++ret;
+ }
+ }
+ }
+ }
+
+ *relptr = NULL;
+
+ return ret;
+}
+\f
+/* Compute the section file positions for an NLM file. All variable
+ length data in the file headers must be set before this function is
+ called. If the variable length data is changed later, the
+ resulting object file will be incorrect. Unfortunately, there is
+ no way to check this.
+
+ This routine also sets the Size and Offset fields in the fixed
+ header.
+
+ It also looks over the symbols and moves any common symbols into
+ the .bss section; NLM has no way to represent a common symbol.
+ This approach means that either the symbols must already have been
+ set at this point, or there must be no common symbols. We need to
+ move the symbols at this point so that mangle_relocs can see the
+ final values. */
+
+static boolean
+nlm_compute_section_file_positions (abfd)
+ bfd *abfd;
+{
+ file_ptr sofar;
+ asection *sec;
+ bfd_vma text, data, bss;
+ bfd_vma text_low, data_low;
+ int text_align, data_align, other_align;
+ file_ptr text_ptr, data_ptr, other_ptr;
+ asection *bss_sec;
+ asymbol **sym_ptr_ptr;
+
+ if (abfd->output_has_begun == true)
+ return true;
+
+ /* Make sure we have a section to hold uninitialized data. */
+ bss_sec = bfd_get_section_by_name (abfd, NLM_UNINITIALIZED_DATA_NAME);
+ if (bss_sec == NULL)
+ {
+ if (! add_bfd_section (abfd, NLM_UNINITIALIZED_DATA_NAME,
+ (file_ptr) 0, (bfd_size_type) 0,
+ SEC_ALLOC))
+ return false;
+ bss_sec = bfd_get_section_by_name (abfd, NLM_UNINITIALIZED_DATA_NAME);
+ }
+
+ abfd->output_has_begun = true;
+
+ /* The fixed header. */
+ sofar = nlm_optional_prefix_size (abfd) + nlm_fixed_header_size (abfd);
+
+ /* The variable header. */
+ sofar += (sizeof (nlm_variable_header (abfd)->descriptionLength)
+ + nlm_variable_header (abfd) -> descriptionLength + 1
+ + NLM_TARGET_LONG_SIZE /* stackSize */
+ + NLM_TARGET_LONG_SIZE /* reserved */
+ + sizeof (nlm_variable_header (abfd) -> oldThreadName)
+ + sizeof (nlm_variable_header (abfd) -> screenNameLength)
+ + nlm_variable_header (abfd) -> screenNameLength + 1
+ + sizeof (nlm_variable_header (abfd) -> threadNameLength)
+ + nlm_variable_header (abfd) -> threadNameLength + 1);
+
+ /* The auxiliary headers. */
+ if (find_nonzero ((PTR) nlm_version_header (abfd),
+ sizeof (Nlm_Internal_Version_Header)))
+ sofar += sizeof (Nlm_External_Version_Header);
+ if (find_nonzero ((PTR) nlm_extended_header (abfd),
+ sizeof (Nlm_Internal_Extended_Header)))
+ sofar += sizeof (Nlm_External_Extended_Header);
+ if (find_nonzero ((PTR) nlm_custom_header (abfd),
+ sizeof (Nlm_Internal_Custom_Header)))
+ sofar += sizeof (Nlm_External_Custom_Header);
+ if (find_nonzero ((PTR) nlm_copyright_header (abfd),
+ sizeof (Nlm_Internal_Copyright_Header)))
+ sofar += (sizeof (Nlm_External_Copyright_Header)
+ + nlm_copyright_header (abfd) -> copyrightMessageLength + 1);
+
+ /* Compute the section file positions in two passes. First get the
+ sizes of the text and data sections, and then set the file
+ positions. This code aligns the sections in the file using the
+ same alignment restrictions that apply to the sections in memory;
+ this may not be necessary. */
+ text = 0;
+ text_low = (bfd_vma) -1;
+ text_align = 0;
+ data = 0;
+ data_low = (bfd_vma) -1;
+ data_align = 0;
+ bss = 0;
+ other_align = 0;
+ for (sec = abfd->sections; sec != (asection *) NULL; sec = sec->next)
+ {
+ flagword f;
+
+ sec->_raw_size = BFD_ALIGN (sec->_raw_size, 1 << sec->alignment_power);
+
+ f = bfd_get_section_flags (abfd, sec);
+ if (f & SEC_CODE)
+ {
+ text += sec->_raw_size;
+ if (bfd_get_section_vma (abfd, sec) < text_low)
+ text_low = bfd_get_section_vma (abfd, sec);
+ if (sec->alignment_power > text_align)
+ text_align = sec->alignment_power;
+ }
+ else if (f & SEC_DATA)
+ {
+ data += sec->_raw_size;
+ if (bfd_get_section_vma (abfd, sec) < data_low)
+ data_low = bfd_get_section_vma (abfd, sec);
+ if (sec->alignment_power > data_align)
+ data_align = sec->alignment_power;
+ }
+ else if (f & SEC_HAS_CONTENTS)
+ {
+ if (sec->alignment_power > other_align)
+ other_align = sec->alignment_power;
+ }
+ else if (f & SEC_ALLOC)
+ bss += sec->_raw_size;
+ }
+
+ nlm_set_text_low (abfd, text_low);
+ nlm_set_data_low (abfd, data_low);
+
+ if (nlm_no_uninitialized_data (abfd))
+ {
+ /* This NetWare format does not use uninitialized data. We must
+ increase the size of the data section. We will never wind up
+ writing those file locations, so they will remain zero. */
+ data += bss;
+ bss = 0;
+ }
+
+ text_ptr = BFD_ALIGN (sofar, 1 << text_align);
+ data_ptr = BFD_ALIGN (text_ptr + text, 1 << data_align);
+ other_ptr = BFD_ALIGN (data_ptr + data, 1 << other_align);
+
+ /* Fill in some fields in the header for which we now have the
+ information. */
+ nlm_fixed_header (abfd)->codeImageOffset = text_ptr;
+ nlm_fixed_header (abfd)->codeImageSize = text;
+ nlm_fixed_header (abfd)->dataImageOffset = data_ptr;
+ nlm_fixed_header (abfd)->dataImageSize = data;
+ nlm_fixed_header (abfd)->uninitializedDataSize = bss;
+
+ for (sec = abfd->sections; sec != (asection *) NULL; sec = sec->next)
+ {
+ flagword f;
+ f = bfd_get_section_flags (abfd, sec);
+
+ if (f & SEC_CODE)
+ {
+ sec->filepos = text_ptr;
+ text_ptr += sec->_raw_size;
+ }
+ else if (f & SEC_DATA)
+ {
+ sec->filepos = data_ptr;
+ data_ptr += sec->_raw_size;
+ }
+ else if (f & SEC_HAS_CONTENTS)
+ {
+ sec->filepos = other_ptr;
+ other_ptr += sec->_raw_size;
+ }
+ }
+
+ nlm_fixed_header (abfd)->relocationFixupOffset = other_ptr;
+
+ /* Move all common symbols into the .bss section. */
+
+ sym_ptr_ptr = bfd_get_outsymbols (abfd);
+ if (sym_ptr_ptr != NULL)
+ {
+ asymbol **sym_end;
+ bfd_vma add;
+
+ sym_end = sym_ptr_ptr + bfd_get_symcount (abfd);
+ add = 0;
+ for (; sym_ptr_ptr < sym_end; sym_ptr_ptr++)
+ {
+ asymbol *sym;
+ bfd_vma size;
+
+ sym = *sym_ptr_ptr;
+
+ if (! bfd_is_com_section (bfd_get_section (sym)))
+ continue;
+
+ /* Put the common symbol in the .bss section, and increase
+ the size of the .bss section by the size of the common
+ symbol (which is the old value of the symbol). */
+ sym->section = bss_sec;
+ size = sym->value;
+ sym->value = bss_sec->_raw_size + add;
+ add += size;
+ add = BFD_ALIGN (add, 1 << bss_sec->alignment_power);
+ }
+ if (add != 0)
+ {
+ if (nlm_no_uninitialized_data (abfd))
+ {
+ /* We could handle this case, but so far it hasn't been
+ necessary. */
+ abort ();
+ }
+ nlm_fixed_header (abfd)->uninitializedDataSize += add;
+ bss_sec->_raw_size += add;
+ }
+ }
+
+ return true;
+}
+
+/* Set the contents of a section. To do this we need to know where
+ the section is going to be located in the output file. That means
+ that the sizes of all the sections must be set, and all the
+ variable size header information must be known. */
+
+boolean
+nlm_set_section_contents (abfd, section, location, offset, count)
+ bfd *abfd;
+ asection *section;
+ PTR location;
+ file_ptr offset;
+ bfd_size_type count;
+{
+ if (abfd->output_has_begun == false
+ && nlm_compute_section_file_positions (abfd) == false)
+ return false;
+
+ if (count == 0)
+ return true;
+
+ /* i386 NetWare has a very restricted set of relocs. In order for
+ objcopy to work, the NLM i386 backend needs a chance to rework
+ the section contents so that its set of relocs will work. If all
+ the relocs are already acceptable, this will not do anything. */
+ if (section->reloc_count != 0)
+ {
+ boolean (*mangle_relocs_func) PARAMS ((bfd *, asection *, PTR,
+ bfd_vma, bfd_size_type));
+
+ mangle_relocs_func = nlm_mangle_relocs_func (abfd);
+ if (mangle_relocs_func != NULL)
+ {
+ if (! (*mangle_relocs_func) (abfd, section, location,
+ (bfd_vma) offset, count))
+ return false;
+ }
+ }
+
+ if (bfd_seek (abfd, (file_ptr) (section->filepos + offset), SEEK_SET) != 0
+ || bfd_write (location, 1, count, abfd) != count)
+ {
+ bfd_error = system_call_error;
+ return false;
+ }
+
+ return true;
+}
+
+/* We need to sort a list of relocs associated with sections when we
+ write out the external relocs. */
+
+static int
+nlm_external_reloc_compare (p1, p2)
+ const void *p1;
+ const void *p2;
+{
+ const struct reloc_and_sec *r1 = (const struct reloc_and_sec *) p1;
+ const struct reloc_and_sec *r2 = (const struct reloc_and_sec *) p2;
+ int cmp;
+
+ cmp = strcmp ((*r1->rel->sym_ptr_ptr)->name,
+ (*r2->rel->sym_ptr_ptr)->name);
+ if (cmp != 0)
+ return cmp;
+
+ /* We sort by address within symbol to make the sort more stable and
+ increase the chances that different hosts will generate bit for
+ bit equivalent results. */
+ return (int) (r1->rel->address - r2->rel->address);
+}
+
+/* Write out an NLM file. We write out the information in this order:
+ fixed header
+ variable header
+ auxiliary headers
+ code sections
+ data sections
+ other sections (custom data, messages, help, shared NLM, RPC,
+ module dependencies)
+ relocation fixups
+ external references (imports)
+ public symbols (exports)
+ debugging records
+ This is similar to the order used by the NetWare tools; the
+ difference is that NetWare puts the sections other than code, data
+ and custom data at the end of the NLM. It is convenient for us to
+ know where the sections are going to be before worrying about the
+ size of the other information.
+
+ By the time this function is called, all the section data should
+ have been output using set_section_contents. Note that custom
+ data, the message file, the help file, the shared NLM file, the RPC
+ data, and the module dependencies are all considered to be
+ sections; the caller is responsible for filling in the offset and
+ length fields in the NLM headers. The relocation fixups and
+ imports are both obtained from the list of relocs attached to each
+ section. The exports and debugging records are obtained from the
+ list of outsymbols. */
+
+boolean
+nlm_write_object_contents (abfd)
+ bfd *abfd;
+{
+ asection *sec;
+ boolean (*write_import_func) PARAMS ((bfd *, asection *, arelent *));
+ bfd_size_type external_reloc_count, internal_reloc_count, i, c;
+ struct reloc_and_sec *external_relocs;
+ asymbol **sym_ptr_ptr;
+ file_ptr last;
+ boolean (*write_prefix_func) PARAMS ((bfd *));
+ unsigned char *fixed_header = (unsigned char *) alloca (nlm_fixed_header_size (abfd));
+
+ if (abfd->output_has_begun == false
+ && nlm_compute_section_file_positions (abfd) == false)
+ return false;
+
+ /* Write out the variable length headers. */
+ if (bfd_seek (abfd,
+ nlm_optional_prefix_size (abfd) + nlm_fixed_header_size (abfd),
+ SEEK_SET) != 0)
+ {
+ bfd_error = system_call_error;
+ return false;
+ }
+ if (nlm_swap_variable_header_out (abfd) == false
+ || nlm_swap_auxiliary_headers_out (abfd) == false)
+ {
+ bfd_error = system_call_error;
+ return false;
+ }
+
+ /* A weak check on whether the section file positions were
+ reasonable. */
+ if (bfd_tell (abfd) > nlm_fixed_header (abfd)->codeImageOffset)
+ {
+ bfd_error = invalid_operation;
+ return false;
+ }
+
+ /* Advance to the relocs. */
+ if (bfd_seek (abfd, nlm_fixed_header (abfd)->relocationFixupOffset,
+ SEEK_SET) != 0)
+ {
+ bfd_error = system_call_error;
+ return false;
+ }
+
+ /* The format of the relocation entries is dependent upon the
+ particular target. We use an external routine to write the reloc
+ out. */
+ write_import_func = nlm_write_import_func (abfd);
+
+ /* Write out the internal relocation fixups. While we're looping
+ over the relocs, we also count the external relocs, which is
+ needed when they are written out below. */
+ internal_reloc_count = 0;
+ external_reloc_count = 0;
+ for (sec = abfd->sections; sec != (asection *) NULL; sec = sec->next)
+ {
+ arelent **rel_ptr_ptr, **rel_end;
+
+ if (sec->reloc_count == 0)
+ continue;
+
+ /* We can only represent relocs within a code or data
+ section. We ignore them for a debugging section. */
+ if ((bfd_get_section_flags (abfd, sec) & (SEC_CODE | SEC_DATA)) == 0)
+ continue;
+
+ /* We need to know how to write out imports */
+ if (write_import_func == NULL)
+ {
+ bfd_error = invalid_operation;
+ return false;
+ }
+
+ rel_ptr_ptr = sec->orelocation;
+ rel_end = rel_ptr_ptr + sec->reloc_count;
+ for (; rel_ptr_ptr < rel_end; rel_ptr_ptr++)
+ {
+ arelent *rel;
+ asymbol *sym;
+
+ rel = *rel_ptr_ptr;
+ sym = *rel->sym_ptr_ptr;
+
+ if (bfd_get_section (sym) != &bfd_und_section)
+ {
+ ++internal_reloc_count;
+ if ((*write_import_func) (abfd, sec, rel) == false)
+ return false;
+ }
+ else
+ ++external_reloc_count;
+ }
+ }
+ nlm_fixed_header (abfd)->numberOfRelocationFixups = internal_reloc_count;
+
+ /* Write out the imports (relocs against external symbols). These
+ are output as a symbol name followed by all the relocs for that
+ symbol, so we must first gather together all the relocs against
+ external symbols and sort them. */
+ external_relocs =
+ (struct reloc_and_sec *) bfd_alloc (abfd,
+ (external_reloc_count
+ * sizeof (struct reloc_and_sec)));
+ if (external_relocs == (struct reloc_and_sec *) NULL)
+ {
+ bfd_error = no_memory;
+ return false;
+ }
+ i = 0;
+ for (sec = abfd->sections; sec != (asection *) NULL; sec = sec->next)
+ {
+ arelent **rel_ptr_ptr, **rel_end;
+
+ if (sec->reloc_count == 0)
+ continue;
+
+ rel_ptr_ptr = sec->orelocation;
+ rel_end = rel_ptr_ptr + sec->reloc_count;
+ for (; rel_ptr_ptr < rel_end; rel_ptr_ptr++)
+ {
+ arelent *rel;
+ asymbol *sym;
+
+ rel = *rel_ptr_ptr;
+ sym = *rel->sym_ptr_ptr;
+
+ if (bfd_get_section (sym) != &bfd_und_section)
+ continue;
+
+ external_relocs[i].rel = rel;
+ external_relocs[i].sec = sec;
+ ++i;
+ }
+ }
+
+ BFD_ASSERT (i == external_reloc_count);
+
+ /* Sort the external relocs by name. */
+ qsort ((PTR) external_relocs, (size_t) external_reloc_count,
+ sizeof (struct reloc_and_sec), nlm_external_reloc_compare);
+
+ /* Write out the external relocs. */
+ nlm_fixed_header (abfd)->externalReferencesOffset = bfd_tell (abfd);
+ c = 0;
+ i = 0;
+ while (i < external_reloc_count)
+ {
+ arelent *rel;
+ asymbol *sym;
+ bfd_size_type j, cnt;
+
+ ++c;
+
+ rel = external_relocs[i].rel;
+ sym = *rel->sym_ptr_ptr;
+
+ cnt = 0;
+ for (j = i;
+ (j < external_reloc_count
+ && *external_relocs[j].rel->sym_ptr_ptr == sym);
+ j++)
+ ++cnt;
+
+ if ((*nlm_write_external_func (abfd)) (abfd, cnt, sym,
+ &external_relocs[i])
+ == false)
+ return false;
+
+ i += cnt;
+ }
+
+ nlm_fixed_header (abfd)->numberOfExternalReferences = c;
+
+ /* Write out the public symbols (exports). */
+ sym_ptr_ptr = bfd_get_outsymbols (abfd);
+ if (sym_ptr_ptr != (asymbol **) NULL)
+ {
+ bfd_vma (*get_public_offset_func) PARAMS ((bfd *, asymbol *));
+ boolean (*write_export_func) PARAMS ((bfd*, asymbol *, bfd_vma));
+
+ asymbol **sym_end;
+
+ nlm_fixed_header (abfd)->publicsOffset = bfd_tell (abfd);
+ get_public_offset_func = nlm_get_public_offset_func (abfd);
+ write_export_func = nlm_write_export_func (abfd);
+ c = 0;
+ sym_end = sym_ptr_ptr + bfd_get_symcount (abfd);
+ for (; sym_ptr_ptr < sym_end; sym_ptr_ptr++)
+ {
+ asymbol *sym;
+ bfd_byte len;
+ bfd_vma offset;
+ bfd_byte temp[NLM_TARGET_LONG_SIZE];
+
+ sym = *sym_ptr_ptr;
+
+ if ((sym->flags & (BSF_EXPORT | BSF_GLOBAL)) == 0
+ || bfd_get_section (sym) == &bfd_und_section)
+ continue;
+
+ ++c;
+
+ if (get_public_offset_func)
+ {
+ /* Most backends can use the code below, but
+ unfortunately some use a different scheme. */
+ offset = (*get_public_offset_func) (abfd, sym);
+ }
+ else
+ {
+ offset = bfd_asymbol_value (sym);
+ sec = sym->section;
+ if (sec->flags & SEC_CODE)
+ {
+ offset -= nlm_get_text_low (abfd);
+ offset |= NLM_HIBIT;
+ }
+ else if (sec->flags & (SEC_DATA | SEC_ALLOC))
+ {
+ /* SEC_ALLOC is for the .bss section. */
+ offset -= nlm_get_data_low (abfd);
+ }
+ else
+ {
+ /* We can't handle an exported symbol that is not in
+ the code or data segment. */
+ bfd_error = invalid_operation;
+ return false;
+ }
+ }
+
+ if (write_export_func)
+ {
+ if ((*write_export_func) (abfd, sym, offset) == false)
+ return false;
+ }
+ else
+ {
+ len = strlen (sym->name);
+ if ((bfd_write (&len, sizeof (bfd_byte), 1, abfd)
+ != sizeof (bfd_byte))
+ || bfd_write (sym->name, len, 1, abfd) != len)
+ {
+ bfd_error = system_call_error;
+ return false;
+ }
+
+ put_word (abfd, offset, temp);
+ if (bfd_write (temp, sizeof (temp), 1, abfd) != sizeof (temp))
+ {
+ bfd_error = system_call_error;
+ return false;
+ }
+ }
+ }
+ nlm_fixed_header (abfd)->numberOfPublics = c;
+
+ /* Write out the debugging records. The NLM conversion program
+ wants to be able to inhibit this, so as a special hack if
+ debugInfoOffset is set to -1 we don't write any debugging
+ information. This can not be handled by fiddling with the
+ symbol table, because exported symbols appear in both the
+ exported symbol list and the debugging information. */
+ if (nlm_fixed_header (abfd)->debugInfoOffset == (file_ptr) -1)
+ {
+ nlm_fixed_header (abfd)->debugInfoOffset = 0;
+ nlm_fixed_header (abfd)->numberOfDebugRecords = 0;
+ }
+ else
+ {
+ nlm_fixed_header (abfd)->debugInfoOffset = bfd_tell (abfd);
+ c = 0;
+ sym_ptr_ptr = bfd_get_outsymbols (abfd);
+ sym_end = sym_ptr_ptr + bfd_get_symcount (abfd);
+ for (; sym_ptr_ptr < sym_end; sym_ptr_ptr++)
+ {
+ asymbol *sym;
+ bfd_byte type, len;
+ bfd_vma offset;
+ bfd_byte temp[NLM_TARGET_LONG_SIZE];
+
+ sym = *sym_ptr_ptr;
+
+ /* The NLM notion of a debugging symbol is actually what
+ BFD calls a local or global symbol. What BFD calls a
+ debugging symbol NLM does not understand at all. */
+ if ((sym->flags & (BSF_LOCAL | BSF_GLOBAL | BSF_EXPORT)) == 0
+ || (sym->flags & BSF_DEBUGGING) != 0
+ || bfd_get_section (sym) == &bfd_und_section)
+ continue;
+
+ ++c;
+
+ offset = bfd_asymbol_value (sym);
+ sec = sym->section;
+ if (sec->flags & SEC_CODE)
+ {
+ offset -= nlm_get_text_low (abfd);
+ type = 1;
+ }
+ else if (sec->flags & (SEC_DATA | SEC_ALLOC))
+ {
+ /* SEC_ALLOC is for the .bss section. */
+ offset -= nlm_get_data_low (abfd);
+ type = 0;
+ }
+ else
+ type = 2;
+
+ /* The type is 0 for data, 1 for code, 2 for absolute. */
+ if (bfd_write (&type, sizeof (bfd_byte), 1, abfd)
+ != sizeof (bfd_byte))
+ {
+ bfd_error = system_call_error;
+ return false;
+ }
+
+ put_word (abfd, offset, temp);
+ if (bfd_write (temp, sizeof (temp), 1, abfd) != sizeof (temp))
+ {
+ bfd_error = system_call_error;
+ return false;
+ }
+
+ len = strlen (sym->name);
+ if ((bfd_write (&len, sizeof (bfd_byte), 1, abfd)
+ != sizeof (bfd_byte))
+ || bfd_write (sym->name, len, 1, abfd) != len)
+ {
+ bfd_error = system_call_error;
+ return false;
+ }
+ }
+ nlm_fixed_header (abfd)->numberOfDebugRecords = c;
+ }
+ }
+
+ /* NLMLINK fills in offset values even if there is no data, so we do
+ the same. */
+ last = bfd_tell (abfd);
+ if (nlm_fixed_header (abfd)->codeImageOffset == 0)
+ nlm_fixed_header (abfd)->codeImageOffset = last;
+ if (nlm_fixed_header (abfd)->dataImageOffset == 0)
+ nlm_fixed_header (abfd)->dataImageOffset = last;
+ if (nlm_fixed_header (abfd)->customDataOffset == 0)
+ nlm_fixed_header (abfd)->customDataOffset = last;
+ if (nlm_fixed_header (abfd)->moduleDependencyOffset == 0)
+ nlm_fixed_header (abfd)->moduleDependencyOffset = last;
+ if (nlm_fixed_header (abfd)->relocationFixupOffset == 0)
+ nlm_fixed_header (abfd)->relocationFixupOffset = last;
+ if (nlm_fixed_header (abfd)->externalReferencesOffset == 0)
+ nlm_fixed_header (abfd)->externalReferencesOffset = last;
+ if (nlm_fixed_header (abfd)->publicsOffset == 0)
+ nlm_fixed_header (abfd)->publicsOffset = last;
+ if (nlm_fixed_header (abfd)->debugInfoOffset == 0)
+ nlm_fixed_header (abfd)->debugInfoOffset = last;
+
+ /* At this point everything has been written out except the fixed
+ header. */
+ memcpy (nlm_fixed_header (abfd)->signature, nlm_signature (abfd),
+ NLM_SIGNATURE_SIZE);
+ nlm_fixed_header (abfd)->version = NLM_HEADER_VERSION;
+ nlm_fixed_header (abfd)->codeStartOffset =
+ (bfd_get_start_address (abfd)
+ - nlm_get_text_low (abfd));
+
+ /* We have no convenient way for the caller to pass in the exit
+ procedure or the check unload procedure, so the caller must set
+ the values in the header to the values of the symbols. */
+ nlm_fixed_header (abfd)->exitProcedureOffset -= nlm_get_text_low (abfd);
+ if (nlm_fixed_header (abfd)->checkUnloadProcedureOffset != 0)
+ nlm_fixed_header (abfd)->checkUnloadProcedureOffset -=
+ nlm_get_text_low (abfd);
+
+ if (bfd_seek (abfd, 0, SEEK_SET) != 0)
+ return false;
+
+ write_prefix_func = nlm_write_prefix_func (abfd);
+ if (write_prefix_func)
+ {
+ if ((*write_prefix_func) (abfd) == false)
+ return false;
+ }
+
+ BFD_ASSERT (bfd_tell (abfd) == nlm_optional_prefix_size (abfd));
+
+ nlm_swap_fixed_header_out (abfd, nlm_fixed_header (abfd), fixed_header);
+ if (bfd_write (fixed_header, nlm_fixed_header_size (abfd), 1, abfd)
+ != nlm_fixed_header_size (abfd))
+ {
+ bfd_error = system_call_error;
+ return false;
+ }
+
+ return true;
+}
projects / deliverable / binutils-gdb.git / blobdiff