+2021-03-18 Nick Alcock <nick.alcock@oracle.com>
+
+ * ctf-create.c (symtypetab_delete_nonstatic_vars): Move
+ into ctf-serialize.c.
+ (ctf_symtab_skippable): Likewise.
+ (CTF_SYMTYPETAB_EMIT_FUNCTION): Likewise.
+ (CTF_SYMTYPETAB_EMIT_PAD): Likewise.
+ (CTF_SYMTYPETAB_FORCE_INDEXED): Likewise.
+ (symtypetab_density): Likewise.
+ (emit_symtypetab): Likewise.
+ (emit_symtypetab_index): Likewise.
+ (ctf_copy_smembers): Likewise.
+ (ctf_copy_lmembers): Likewise.
+ (ctf_copy_emembers): Likewise.
+ (ctf_sort_var): Likewise.
+ (ctf_serialize): Likewise.
+ (ctf_gzwrite): Likewise.
+ (ctf_compress_write): Likewise.
+ (ctf_write_mem): Likewise.
+ (ctf_write): Likewise.
+ * ctf-serialize.c: New file.
+ * Makefile.am (libctf_nobfd_la_SOURCES): Add it.
+ * Makefile.in: Regenerate.
+
2021-03-18 Nick Alcock <nick.alcock@oracle.com>
* ctf-link.c (ctf_link_lazy_open): Move up in the file, to near
libctf_nobfd_la_CPPFLAGS = $(AM_CPPFLAGS) -DNOBFD=1
libctf_nobfd_la_SOURCES = ctf-archive.c ctf-dump.c ctf-create.c ctf-decl.c ctf-error.c \
ctf-hash.c ctf-labels.c ctf-dedup.c ctf-link.c ctf-lookup.c \
- ctf-open.c ctf-sha1.c ctf-string.c ctf-subr.c ctf-types.c \
- ctf-util.c
+ ctf-open.c ctf-serialize.c ctf-sha1.c ctf-string.c ctf-subr.c \
+ ctf-types.c ctf-util.c
if NEED_CTF_QSORT_R
libctf_nobfd_la_SOURCES += ctf-qsort_r.c
endif
libctf_nobfd_la_DEPENDENCIES = $(am__DEPENDENCIES_1)
am__libctf_nobfd_la_SOURCES_DIST = ctf-archive.c ctf-dump.c \
ctf-create.c ctf-decl.c ctf-error.c ctf-hash.c ctf-labels.c \
- ctf-dedup.c ctf-link.c ctf-lookup.c ctf-open.c ctf-sha1.c \
- ctf-string.c ctf-subr.c ctf-types.c ctf-util.c ctf-qsort_r.c
+ ctf-dedup.c ctf-link.c ctf-lookup.c ctf-open.c ctf-serialize.c \
+ ctf-sha1.c ctf-string.c ctf-subr.c ctf-types.c ctf-util.c \
+ ctf-qsort_r.c
@NEED_CTF_QSORT_R_TRUE@am__objects_1 = libctf_nobfd_la-ctf-qsort_r.lo
am_libctf_nobfd_la_OBJECTS = libctf_nobfd_la-ctf-archive.lo \
libctf_nobfd_la-ctf-dump.lo libctf_nobfd_la-ctf-create.lo \
libctf_nobfd_la-ctf-hash.lo libctf_nobfd_la-ctf-labels.lo \
libctf_nobfd_la-ctf-dedup.lo libctf_nobfd_la-ctf-link.lo \
libctf_nobfd_la-ctf-lookup.lo libctf_nobfd_la-ctf-open.lo \
- libctf_nobfd_la-ctf-sha1.lo libctf_nobfd_la-ctf-string.lo \
- libctf_nobfd_la-ctf-subr.lo libctf_nobfd_la-ctf-types.lo \
- libctf_nobfd_la-ctf-util.lo $(am__objects_1)
+ libctf_nobfd_la-ctf-serialize.lo libctf_nobfd_la-ctf-sha1.lo \
+ libctf_nobfd_la-ctf-string.lo libctf_nobfd_la-ctf-subr.lo \
+ libctf_nobfd_la-ctf-types.lo libctf_nobfd_la-ctf-util.lo \
+ $(am__objects_1)
libctf_nobfd_la_OBJECTS = $(am_libctf_nobfd_la_OBJECTS)
AM_V_lt = $(am__v_lt_@AM_V@)
am__v_lt_ = $(am__v_lt_@AM_DEFAULT_V@)
libctf_la_DEPENDENCIES = ../bfd/libbfd.la $(am__DEPENDENCIES_2)
am__libctf_la_SOURCES_DIST = ctf-archive.c ctf-dump.c ctf-create.c \
ctf-decl.c ctf-error.c ctf-hash.c ctf-labels.c ctf-dedup.c \
- ctf-link.c ctf-lookup.c ctf-open.c ctf-sha1.c ctf-string.c \
- ctf-subr.c ctf-types.c ctf-util.c ctf-qsort_r.c ctf-open-bfd.c
+ ctf-link.c ctf-lookup.c ctf-open.c ctf-serialize.c ctf-sha1.c \
+ ctf-string.c ctf-subr.c ctf-types.c ctf-util.c ctf-qsort_r.c \
+ ctf-open-bfd.c
@NEED_CTF_QSORT_R_TRUE@am__objects_2 = libctf_la-ctf-qsort_r.lo
am__objects_3 = libctf_la-ctf-archive.lo libctf_la-ctf-dump.lo \
libctf_la-ctf-create.lo libctf_la-ctf-decl.lo \
libctf_la-ctf-error.lo libctf_la-ctf-hash.lo \
libctf_la-ctf-labels.lo libctf_la-ctf-dedup.lo \
libctf_la-ctf-link.lo libctf_la-ctf-lookup.lo \
- libctf_la-ctf-open.lo libctf_la-ctf-sha1.lo \
- libctf_la-ctf-string.lo libctf_la-ctf-subr.lo \
- libctf_la-ctf-types.lo libctf_la-ctf-util.lo $(am__objects_2)
+ libctf_la-ctf-open.lo libctf_la-ctf-serialize.lo \
+ libctf_la-ctf-sha1.lo libctf_la-ctf-string.lo \
+ libctf_la-ctf-subr.lo libctf_la-ctf-types.lo \
+ libctf_la-ctf-util.lo $(am__objects_2)
am_libctf_la_OBJECTS = $(am__objects_3) libctf_la-ctf-open-bfd.lo
libctf_la_OBJECTS = $(am_libctf_la_OBJECTS)
libctf_la_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
libctf_nobfd_la_CPPFLAGS = $(AM_CPPFLAGS) -DNOBFD=1
libctf_nobfd_la_SOURCES = ctf-archive.c ctf-dump.c ctf-create.c \
ctf-decl.c ctf-error.c ctf-hash.c ctf-labels.c ctf-dedup.c \
- ctf-link.c ctf-lookup.c ctf-open.c ctf-sha1.c ctf-string.c \
- ctf-subr.c ctf-types.c ctf-util.c $(am__append_1)
+ ctf-link.c ctf-lookup.c ctf-open.c ctf-serialize.c ctf-sha1.c \
+ ctf-string.c ctf-subr.c ctf-types.c ctf-util.c $(am__append_1)
libctf_la_LIBADD = ../bfd/libbfd.la $(libctf_nobfd_la_LIBADD)
libctf_la_CPPFLAGS = $(AM_CPPFLAGS) -DNOBFD=0
libctf_la_LDFLAGS = $(libctf_nobfd_la_LDFLAGS)
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libctf_la-ctf-open-bfd.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libctf_la-ctf-open.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libctf_la-ctf-qsort_r.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libctf_la-ctf-serialize.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libctf_la-ctf-sha1.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libctf_la-ctf-string.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libctf_la-ctf-subr.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libctf_nobfd_la-ctf-lookup.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libctf_nobfd_la-ctf-open.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libctf_nobfd_la-ctf-qsort_r.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libctf_nobfd_la-ctf-serialize.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libctf_nobfd_la-ctf-sha1.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libctf_nobfd_la-ctf-string.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libctf_nobfd_la-ctf-subr.Plo@am__quote@
@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCC_FALSE@ $(AM_V_CC@am__nodep@)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libctf_nobfd_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libctf_nobfd_la-ctf-open.lo `test -f 'ctf-open.c' || echo '$(srcdir)/'`ctf-open.c
+libctf_nobfd_la-ctf-serialize.lo: ctf-serialize.c
+@am__fastdepCC_TRUE@ $(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libctf_nobfd_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libctf_nobfd_la-ctf-serialize.lo -MD -MP -MF $(DEPDIR)/libctf_nobfd_la-ctf-serialize.Tpo -c -o libctf_nobfd_la-ctf-serialize.lo `test -f 'ctf-serialize.c' || echo '$(srcdir)/'`ctf-serialize.c
+@am__fastdepCC_TRUE@ $(AM_V_at)$(am__mv) $(DEPDIR)/libctf_nobfd_la-ctf-serialize.Tpo $(DEPDIR)/libctf_nobfd_la-ctf-serialize.Plo
+@AMDEP_TRUE@@am__fastdepCC_FALSE@ $(AM_V_CC)source='ctf-serialize.c' object='libctf_nobfd_la-ctf-serialize.lo' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@ $(AM_V_CC@am__nodep@)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libctf_nobfd_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libctf_nobfd_la-ctf-serialize.lo `test -f 'ctf-serialize.c' || echo '$(srcdir)/'`ctf-serialize.c
+
libctf_nobfd_la-ctf-sha1.lo: ctf-sha1.c
@am__fastdepCC_TRUE@ $(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libctf_nobfd_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libctf_nobfd_la-ctf-sha1.lo -MD -MP -MF $(DEPDIR)/libctf_nobfd_la-ctf-sha1.Tpo -c -o libctf_nobfd_la-ctf-sha1.lo `test -f 'ctf-sha1.c' || echo '$(srcdir)/'`ctf-sha1.c
@am__fastdepCC_TRUE@ $(AM_V_at)$(am__mv) $(DEPDIR)/libctf_nobfd_la-ctf-sha1.Tpo $(DEPDIR)/libctf_nobfd_la-ctf-sha1.Plo
@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCC_FALSE@ $(AM_V_CC@am__nodep@)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libctf_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libctf_la-ctf-open.lo `test -f 'ctf-open.c' || echo '$(srcdir)/'`ctf-open.c
+libctf_la-ctf-serialize.lo: ctf-serialize.c
+@am__fastdepCC_TRUE@ $(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libctf_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libctf_la-ctf-serialize.lo -MD -MP -MF $(DEPDIR)/libctf_la-ctf-serialize.Tpo -c -o libctf_la-ctf-serialize.lo `test -f 'ctf-serialize.c' || echo '$(srcdir)/'`ctf-serialize.c
+@am__fastdepCC_TRUE@ $(AM_V_at)$(am__mv) $(DEPDIR)/libctf_la-ctf-serialize.Tpo $(DEPDIR)/libctf_la-ctf-serialize.Plo
+@AMDEP_TRUE@@am__fastdepCC_FALSE@ $(AM_V_CC)source='ctf-serialize.c' object='libctf_la-ctf-serialize.lo' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@ $(AM_V_CC@am__nodep@)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libctf_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libctf_la-ctf-serialize.lo `test -f 'ctf-serialize.c' || echo '$(srcdir)/'`ctf-serialize.c
+
libctf_la-ctf-sha1.lo: ctf-sha1.c
@am__fastdepCC_TRUE@ $(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libctf_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libctf_la-ctf-sha1.lo -MD -MP -MF $(DEPDIR)/libctf_la-ctf-sha1.Tpo -c -o libctf_la-ctf-sha1.lo `test -f 'ctf-sha1.c' || echo '$(srcdir)/'`ctf-sha1.c
@am__fastdepCC_TRUE@ $(AM_V_at)$(am__mv) $(DEPDIR)/libctf_la-ctf-sha1.Tpo $(DEPDIR)/libctf_la-ctf-sha1.Plo
-/* CTF file creation.
+/* CTF dict creation.
Copyright (C) 2019-2021 Free Software Foundation, Inc.
This file is part of libctf.
#include <ctf-impl.h>
#include <sys/param.h>
-#include <assert.h>
#include <string.h>
#include <unistd.h>
-#include <zlib.h>
-
-#include <elf.h>
-#include "elf-bfd.h"
#ifndef EOVERFLOW
#define EOVERFLOW ERANGE
return NULL;
}
-/* Delete data symbols that have been assigned names from the variable section.
- Must be called from within ctf_serialize, because that is the only place
- you can safely delete variables without messing up ctf_rollback. */
-
-static int
-symtypetab_delete_nonstatic_vars (ctf_dict_t *fp, ctf_dict_t *symfp)
-{
- ctf_dvdef_t *dvd, *nvd;
- ctf_id_t type;
-
- for (dvd = ctf_list_next (&fp->ctf_dvdefs); dvd != NULL; dvd = nvd)
- {
- nvd = ctf_list_next (dvd);
-
- if (((type = (ctf_id_t) (uintptr_t)
- ctf_dynhash_lookup (fp->ctf_objthash, dvd->dvd_name)) > 0)
- && ctf_dynhash_lookup (symfp->ctf_dynsyms, dvd->dvd_name) != NULL
- && type == dvd->dvd_type)
- ctf_dvd_delete (fp, dvd);
- }
-
- return 0;
-}
-
-/* Determine if a symbol is "skippable" and should never appear in the
- symtypetab sections. */
-
-int
-ctf_symtab_skippable (ctf_link_sym_t *sym)
-{
- /* Never skip symbols whose name is not yet known. */
- if (sym->st_nameidx_set)
- return 0;
-
- return (sym->st_name == NULL || sym->st_name[0] == 0
- || sym->st_shndx == SHN_UNDEF
- || strcmp (sym->st_name, "_START_") == 0
- || strcmp (sym->st_name, "_END_") == 0
- || (sym->st_type == STT_OBJECT && sym->st_shndx == SHN_EXTABS
- && sym->st_value == 0));
-}
-
-/* Symtypetab emission flags. */
-
-#define CTF_SYMTYPETAB_EMIT_FUNCTION 0x1
-#define CTF_SYMTYPETAB_EMIT_PAD 0x2
-#define CTF_SYMTYPETAB_FORCE_INDEXED 0x4
-
-/* Get the number of symbols in a symbol hash, the count of symbols, the maximum
- seen, the eventual size, without any padding elements, of the func/data and
- (if generated) index sections, and the size of accumulated padding elements.
- The linker-reported set of symbols is found in SYMFP: it may be NULL if
- symbol filtering is not desired, in which case CTF_SYMTYPETAB_FORCE_INDEXED
- will always be set in the flags.
-
- Also figure out if any symbols need to be moved to the variable section, and
- add them (if not already present). */
-
-_libctf_nonnull_ ((1,3,4,5,6,7,8))
-static int
-symtypetab_density (ctf_dict_t *fp, ctf_dict_t *symfp, ctf_dynhash_t *symhash,
- size_t *count, size_t *max, size_t *unpadsize,
- size_t *padsize, size_t *idxsize, int flags)
-{
- ctf_next_t *i = NULL;
- const void *name;
- const void *ctf_sym;
- ctf_dynhash_t *linker_known = NULL;
- int err;
- int beyond_max = 0;
-
- *count = 0;
- *max = 0;
- *unpadsize = 0;
- *idxsize = 0;
- *padsize = 0;
-
- if (!(flags & CTF_SYMTYPETAB_FORCE_INDEXED))
- {
- /* Make a dynhash citing only symbols reported by the linker of the
- appropriate type, then traverse all potential-symbols we know the types
- of, removing them from linker_known as we go. Once this is done, the
- only symbols remaining in linker_known are symbols we don't know the
- types of: we must emit pads for those symbols that are below the
- maximum symbol we will emit (any beyond that are simply skipped).
-
- If there are none, this symtypetab will be empty: just report that. */
-
- if (!symfp->ctf_dynsyms)
- return 0;
-
- if ((linker_known = ctf_dynhash_create (ctf_hash_string, ctf_hash_eq_string,
- NULL, NULL)) == NULL)
- return (ctf_set_errno (fp, ENOMEM));
-
- while ((err = ctf_dynhash_cnext (symfp->ctf_dynsyms, &i,
- &name, &ctf_sym)) == 0)
- {
- ctf_link_sym_t *sym = (ctf_link_sym_t *) ctf_sym;
-
- if (((flags & CTF_SYMTYPETAB_EMIT_FUNCTION)
- && sym->st_type != STT_FUNC)
- || (!(flags & CTF_SYMTYPETAB_EMIT_FUNCTION)
- && sym->st_type != STT_OBJECT))
- continue;
-
- if (ctf_symtab_skippable (sym))
- continue;
-
- /* This should only be true briefly before all the names are
- finalized, long before we get this far. */
- if (!ctf_assert (fp, !sym->st_nameidx_set))
- return -1; /* errno is set for us. */
-
- if (ctf_dynhash_cinsert (linker_known, name, ctf_sym) < 0)
- {
- ctf_dynhash_destroy (linker_known);
- return (ctf_set_errno (fp, ENOMEM));
- }
- }
- if (err != ECTF_NEXT_END)
- {
- ctf_err_warn (fp, 0, err, _("iterating over linker-known symbols during "
- "serialization"));
- ctf_dynhash_destroy (linker_known);
- return (ctf_set_errno (fp, err));
- }
- }
-
- while ((err = ctf_dynhash_cnext (symhash, &i, &name, NULL)) == 0)
- {
- ctf_link_sym_t *sym;
-
- if (!(flags & CTF_SYMTYPETAB_FORCE_INDEXED))
- {
- /* Linker did not report symbol in symtab. Remove it from the
- set of known data symbols and continue. */
- if ((sym = ctf_dynhash_lookup (symfp->ctf_dynsyms, name)) == NULL)
- {
- ctf_dynhash_remove (symhash, name);
- continue;
- }
-
- /* We don't remove skippable symbols from the symhash because we don't
- want them to be migrated into variables. */
- if (ctf_symtab_skippable (sym))
- continue;
-
- if ((flags & CTF_SYMTYPETAB_EMIT_FUNCTION)
- && sym->st_type != STT_FUNC)
- {
- ctf_err_warn (fp, 1, 0, _("symbol %s (%x) added to CTF as a "
- "function but is of type %x. "
- "The symbol type lookup tables "
- "are probably corrupted"),
- sym->st_name, sym->st_symidx, sym->st_type);
- ctf_dynhash_remove (symhash, name);
- continue;
- }
- else if (!(flags & CTF_SYMTYPETAB_EMIT_FUNCTION)
- && sym->st_type != STT_OBJECT)
- {
- ctf_err_warn (fp, 1, 0, _("symbol %s (%x) added to CTF as a "
- "data object but is of type %x. "
- "The symbol type lookup tables "
- "are probably corrupted"),
- sym->st_name, sym->st_symidx, sym->st_type);
- ctf_dynhash_remove (symhash, name);
- continue;
- }
-
- ctf_dynhash_remove (linker_known, name);
- }
- *unpadsize += sizeof (uint32_t);
- (*count)++;
-
- if (!(flags & CTF_SYMTYPETAB_FORCE_INDEXED))
- {
- if (*max < sym->st_symidx)
- *max = sym->st_symidx;
- }
- else
- (*max)++;
- }
- if (err != ECTF_NEXT_END)
- {
- ctf_err_warn (fp, 0, err, _("iterating over CTF symtypetab during "
- "serialization"));
- ctf_dynhash_destroy (linker_known);
- return (ctf_set_errno (fp, err));
- }
-
- if (!(flags & CTF_SYMTYPETAB_FORCE_INDEXED))
- {
- while ((err = ctf_dynhash_cnext (linker_known, &i, NULL, &ctf_sym)) == 0)
- {
- ctf_link_sym_t *sym = (ctf_link_sym_t *) ctf_sym;
-
- if (sym->st_symidx > *max)
- beyond_max++;
- }
- if (err != ECTF_NEXT_END)
- {
- ctf_err_warn (fp, 0, err, _("iterating over linker-known symbols "
- "during CTF serialization"));
- ctf_dynhash_destroy (linker_known);
- return (ctf_set_errno (fp, err));
- }
- }
-
- *idxsize = *count * sizeof (uint32_t);
- if (!(flags & CTF_SYMTYPETAB_FORCE_INDEXED))
- *padsize = (ctf_dynhash_elements (linker_known) - beyond_max) * sizeof (uint32_t);
-
- ctf_dynhash_destroy (linker_known);
- return 0;
-}
-
-/* Emit an objt or func symtypetab into DP in a particular order defined by an
- array of ctf_link_sym_t or symbol names passed in. The index has NIDX
- elements in it: unindexed output would terminate at symbol OUTMAX and is in
- any case no larger than SIZE bytes. Some index elements are expected to be
- skipped: see symtypetab_density. The linker-reported set of symbols (if any)
- is found in SYMFP. */
-static int
-emit_symtypetab (ctf_dict_t *fp, ctf_dict_t *symfp, uint32_t *dp,
- ctf_link_sym_t **idx, const char **nameidx, uint32_t nidx,
- uint32_t outmax, int size, int flags)
-{
- uint32_t i;
- uint32_t *dpp = dp;
- ctf_dynhash_t *symhash;
-
- ctf_dprintf ("Emitting table of size %i, outmax %u, %u symtypetab entries, "
- "flags %i\n", size, outmax, nidx, flags);
-
- /* Empty table? Nothing to do. */
- if (size == 0)
- return 0;
-
- if (flags & CTF_SYMTYPETAB_EMIT_FUNCTION)
- symhash = fp->ctf_funchash;
- else
- symhash = fp->ctf_objthash;
-
- for (i = 0; i < nidx; i++)
- {
- const char *sym_name;
- void *type;
-
- /* If we have a linker-reported set of symbols, we may be given that set
- to work from, or a set of symbol names. In both cases we want to look
- at the corresponding linker-reported symbol (if any). */
- if (!(flags & CTF_SYMTYPETAB_FORCE_INDEXED))
- {
- ctf_link_sym_t *this_link_sym;
-
- if (idx)
- this_link_sym = idx[i];
- else
- this_link_sym = ctf_dynhash_lookup (symfp->ctf_dynsyms, nameidx[i]);
-
- /* Unreported symbol number. No pad, no nothing. */
- if (!this_link_sym)
- continue;
-
- /* Symbol of the wrong type, or skippable? This symbol is not in this
- table. */
- if (((flags & CTF_SYMTYPETAB_EMIT_FUNCTION)
- && this_link_sym->st_type != STT_FUNC)
- || (!(flags & CTF_SYMTYPETAB_EMIT_FUNCTION)
- && this_link_sym->st_type != STT_OBJECT))
- continue;
-
- if (ctf_symtab_skippable (this_link_sym))
- continue;
-
- sym_name = this_link_sym->st_name;
-
- /* Linker reports symbol of a different type to the symbol we actually
- added? Skip the symbol. No pad, since the symbol doesn't actually
- belong in this table at all. (Warned about in
- symtypetab_density.) */
- if ((this_link_sym->st_type == STT_FUNC)
- && (ctf_dynhash_lookup (fp->ctf_objthash, sym_name)))
- continue;
-
- if ((this_link_sym->st_type == STT_OBJECT)
- && (ctf_dynhash_lookup (fp->ctf_funchash, sym_name)))
- continue;
- }
- else
- sym_name = nameidx[i];
-
- /* Symbol in index but no type set? Silently skip and (optionally)
- pad. (In force-indexed mode, this is also where we track symbols of
- the wrong type for this round of insertion.) */
- if ((type = ctf_dynhash_lookup (symhash, sym_name)) == NULL)
- {
- if (flags & CTF_SYMTYPETAB_EMIT_PAD)
- *dpp++ = 0;
- continue;
- }
-
- if (!ctf_assert (fp, (((char *) dpp) - (char *) dp) < size))
- return -1; /* errno is set for us. */
-
- *dpp++ = (ctf_id_t) (uintptr_t) type;
-
- /* When emitting unindexed output, all later symbols are pads: stop
- early. */
- if ((flags & CTF_SYMTYPETAB_EMIT_PAD) && idx[i]->st_symidx == outmax)
- break;
- }
-
- return 0;
-}
-
-/* Emit an objt or func symtypetab index into DP in a paticular order defined by
- an array of symbol names passed in. Stop at NIDX. The linker-reported set
- of symbols (if any) is found in SYMFP. */
-static int
-emit_symtypetab_index (ctf_dict_t *fp, ctf_dict_t *symfp, uint32_t *dp,
- const char **idx, uint32_t nidx, int size, int flags)
-{
- uint32_t i;
- uint32_t *dpp = dp;
- ctf_dynhash_t *symhash;
-
- ctf_dprintf ("Emitting index of size %i, %u entries reported by linker, "
- "flags %i\n", size, nidx, flags);
-
- /* Empty table? Nothing to do. */
- if (size == 0)
- return 0;
-
- if (flags & CTF_SYMTYPETAB_EMIT_FUNCTION)
- symhash = fp->ctf_funchash;
- else
- symhash = fp->ctf_objthash;
-
- /* Indexes should always be unpadded. */
- if (!ctf_assert (fp, !(flags & CTF_SYMTYPETAB_EMIT_PAD)))
- return -1; /* errno is set for us. */
-
- for (i = 0; i < nidx; i++)
- {
- const char *sym_name;
- void *type;
-
- if (!(flags & CTF_SYMTYPETAB_FORCE_INDEXED))
- {
- ctf_link_sym_t *this_link_sym;
-
- this_link_sym = ctf_dynhash_lookup (symfp->ctf_dynsyms, idx[i]);
-
- /* This is an index: unreported symbols should never appear in it. */
- if (!ctf_assert (fp, this_link_sym != NULL))
- return -1; /* errno is set for us. */
-
- /* Symbol of the wrong type, or skippable? This symbol is not in this
- table. */
- if (((flags & CTF_SYMTYPETAB_EMIT_FUNCTION)
- && this_link_sym->st_type != STT_FUNC)
- || (!(flags & CTF_SYMTYPETAB_EMIT_FUNCTION)
- && this_link_sym->st_type != STT_OBJECT))
- continue;
-
- if (ctf_symtab_skippable (this_link_sym))
- continue;
-
- sym_name = this_link_sym->st_name;
-
- /* Linker reports symbol of a different type to the symbol we actually
- added? Skip the symbol. */
- if ((this_link_sym->st_type == STT_FUNC)
- && (ctf_dynhash_lookup (fp->ctf_objthash, sym_name)))
- continue;
-
- if ((this_link_sym->st_type == STT_OBJECT)
- && (ctf_dynhash_lookup (fp->ctf_funchash, sym_name)))
- continue;
- }
- else
- sym_name = idx[i];
-
- /* Symbol in index and reported by linker, but no type set? Silently skip
- and (optionally) pad. (In force-indexed mode, this is also where we
- track symbols of the wrong type for this round of insertion.) */
- if ((type = ctf_dynhash_lookup (symhash, sym_name)) == NULL)
- continue;
-
- ctf_str_add_ref (fp, sym_name, dpp++);
-
- if (!ctf_assert (fp, (((char *) dpp) - (char *) dp) <= size))
- return -1; /* errno is set for us. */
- }
-
- return 0;
-}
-
-static unsigned char *
-ctf_copy_smembers (ctf_dict_t *fp, ctf_dtdef_t *dtd, unsigned char *t)
-{
- ctf_dmdef_t *dmd = ctf_list_next (&dtd->dtd_u.dtu_members);
- ctf_member_t ctm;
-
- for (; dmd != NULL; dmd = ctf_list_next (dmd))
- {
- ctf_member_t *copied;
-
- ctm.ctm_name = 0;
- ctm.ctm_type = (uint32_t) dmd->dmd_type;
- ctm.ctm_offset = (uint32_t) dmd->dmd_offset;
-
- memcpy (t, &ctm, sizeof (ctm));
- copied = (ctf_member_t *) t;
- if (dmd->dmd_name)
- ctf_str_add_ref (fp, dmd->dmd_name, &copied->ctm_name);
-
- t += sizeof (ctm);
- }
-
- return t;
-}
-
-static unsigned char *
-ctf_copy_lmembers (ctf_dict_t *fp, ctf_dtdef_t *dtd, unsigned char *t)
-{
- ctf_dmdef_t *dmd = ctf_list_next (&dtd->dtd_u.dtu_members);
- ctf_lmember_t ctlm;
-
- for (; dmd != NULL; dmd = ctf_list_next (dmd))
- {
- ctf_lmember_t *copied;
-
- ctlm.ctlm_name = 0;
- ctlm.ctlm_type = (uint32_t) dmd->dmd_type;
- ctlm.ctlm_offsethi = CTF_OFFSET_TO_LMEMHI (dmd->dmd_offset);
- ctlm.ctlm_offsetlo = CTF_OFFSET_TO_LMEMLO (dmd->dmd_offset);
-
- memcpy (t, &ctlm, sizeof (ctlm));
- copied = (ctf_lmember_t *) t;
- if (dmd->dmd_name)
- ctf_str_add_ref (fp, dmd->dmd_name, &copied->ctlm_name);
-
- t += sizeof (ctlm);
- }
-
- return t;
-}
-
-static unsigned char *
-ctf_copy_emembers (ctf_dict_t *fp, ctf_dtdef_t *dtd, unsigned char *t)
-{
- ctf_dmdef_t *dmd = ctf_list_next (&dtd->dtd_u.dtu_members);
- ctf_enum_t cte;
-
- for (; dmd != NULL; dmd = ctf_list_next (dmd))
- {
- ctf_enum_t *copied;
-
- cte.cte_value = dmd->dmd_value;
- memcpy (t, &cte, sizeof (cte));
- copied = (ctf_enum_t *) t;
- ctf_str_add_ref (fp, dmd->dmd_name, &copied->cte_name);
- t += sizeof (cte);
- }
-
- return t;
-}
-
-/* Sort a newly-constructed static variable array. */
-
-typedef struct ctf_sort_var_arg_cb
-{
- ctf_dict_t *fp;
- ctf_strs_t *strtab;
-} ctf_sort_var_arg_cb_t;
-
-static int
-ctf_sort_var (const void *one_, const void *two_, void *arg_)
-{
- const ctf_varent_t *one = one_;
- const ctf_varent_t *two = two_;
- ctf_sort_var_arg_cb_t *arg = arg_;
-
- return (strcmp (ctf_strraw_explicit (arg->fp, one->ctv_name, arg->strtab),
- ctf_strraw_explicit (arg->fp, two->ctv_name, arg->strtab)));
-}
-
/* Compatibility: just update the threshold for ctf_discard. */
int
ctf_update (ctf_dict_t *fp)
return 0;
}
-/* If the specified CTF dict is writable and has been modified, reload this dict
- with the updated type definitions, ready for serialization. In order to make
- this code and the rest of libctf as simple as possible, we perform updates by
- taking the dynamic type definitions and creating an in-memory CTF dict
- containing the definitions, and then call ctf_simple_open_internal() on it.
- We perform one extra trick here for the benefit of callers and to keep our
- code simple: ctf_simple_open_internal() will return a new ctf_dict_t, but we
- want to keep the fp constant for the caller, so after
- ctf_simple_open_internal() returns, we use memcpy to swap the interior of the
- old and new ctf_dict_t's, and then free the old. */
-int
-ctf_serialize (ctf_dict_t *fp)
-{
- ctf_dict_t ofp, *nfp;
- ctf_header_t hdr, *hdrp;
- ctf_dtdef_t *dtd;
- ctf_dvdef_t *dvd;
- ctf_varent_t *dvarents;
- ctf_strs_writable_t strtab;
-
- unsigned char *t;
- unsigned long i;
- size_t buf_size, type_size, objt_size, func_size;
- size_t objt_unpadsize, func_unpadsize, objt_padsize, func_padsize;
- size_t funcidx_size, objtidx_size;
- size_t nvars, nfuncs, nobjts, maxobjt, maxfunc;
- size_t nsymtypes = 0;
- const char **sym_name_order = NULL;
- unsigned char *buf = NULL, *newbuf;
- int err;
-
- /* Symtab filtering. If filter_syms is true, symfp is set: otherwise,
- CTF_SYMTYPETAB_FORCE_INDEXED is set in symflags. */
- int filter_syms = 0;
- int sort_syms = 1;
- int symflags = 0;
- ctf_dict_t *symfp = NULL;
-
- if (!(fp->ctf_flags & LCTF_RDWR))
- return (ctf_set_errno (fp, ECTF_RDONLY));
-
- /* Update required? */
- if (!(fp->ctf_flags & LCTF_DIRTY))
- return 0;
-
- /* If doing a writeout as part of linking, and the link flags request it,
- filter out reported symbols from the variable section, and filter out all
- other symbols from the symtypetab sections. (If we are not linking, the
- symbols are sorted; if we are linking, don't bother sorting if we are not
- filtering out reported symbols: this is almost certaily an ld -r and only
- the linker is likely to consume these symtypetabs again. The linker
- doesn't care what order the symtypetab entries is in, since it only
- iterates over symbols and does not use the ctf_lookup_by_symbol* API.) */
-
- if (fp->ctf_flags & LCTF_LINKING)
- {
- filter_syms = !(fp->ctf_link_flags & CTF_LINK_NO_FILTER_REPORTED_SYMS);
- if (!filter_syms)
- sort_syms = 0;
- }
-
- /* Fill in an initial CTF header. We will leave the label, object,
- and function sections empty and only output a header, type section,
- and string table. The type section begins at a 4-byte aligned
- boundary past the CTF header itself (at relative offset zero). The flag
- indicating a new-style function info section (an array of CTF_K_FUNCTION
- type IDs in the types section) is flipped on. */
-
- memset (&hdr, 0, sizeof (hdr));
- hdr.cth_magic = CTF_MAGIC;
- hdr.cth_version = CTF_VERSION;
-
- /* This is a new-format func info section, and the symtab and strtab come out
- of the dynsym and dynstr these days. */
- hdr.cth_flags = (CTF_F_NEWFUNCINFO | CTF_F_DYNSTR);
-
- /* Iterate through the dynamic type definition list and compute the
- size of the CTF type section we will need to generate. */
-
- for (type_size = 0, dtd = ctf_list_next (&fp->ctf_dtdefs);
- dtd != NULL; dtd = ctf_list_next (dtd))
- {
- uint32_t kind = LCTF_INFO_KIND (fp, dtd->dtd_data.ctt_info);
- uint32_t vlen = LCTF_INFO_VLEN (fp, dtd->dtd_data.ctt_info);
-
- if (dtd->dtd_data.ctt_size != CTF_LSIZE_SENT)
- type_size += sizeof (ctf_stype_t);
- else
- type_size += sizeof (ctf_type_t);
-
- switch (kind)
- {
- case CTF_K_INTEGER:
- case CTF_K_FLOAT:
- type_size += sizeof (uint32_t);
- break;
- case CTF_K_ARRAY:
- type_size += sizeof (ctf_array_t);
- break;
- case CTF_K_SLICE:
- type_size += sizeof (ctf_slice_t);
- break;
- case CTF_K_FUNCTION:
- type_size += sizeof (uint32_t) * (vlen + (vlen & 1));
- break;
- case CTF_K_STRUCT:
- case CTF_K_UNION:
- if (dtd->dtd_data.ctt_size < CTF_LSTRUCT_THRESH)
- type_size += sizeof (ctf_member_t) * vlen;
- else
- type_size += sizeof (ctf_lmember_t) * vlen;
- break;
- case CTF_K_ENUM:
- type_size += sizeof (ctf_enum_t) * vlen;
- break;
- }
- }
-
- /* Find the dict to which the linker has reported symbols, if any. */
-
- if (filter_syms)
- {
- if (!fp->ctf_dynsyms && fp->ctf_parent && fp->ctf_parent->ctf_dynsyms)
- symfp = fp->ctf_parent;
- else
- symfp = fp;
- }
-
- /* If not filtering, keep all potential symbols in an unsorted, indexed
- dict. */
- if (!filter_syms)
- symflags = CTF_SYMTYPETAB_FORCE_INDEXED;
- else
- hdr.cth_flags |= CTF_F_IDXSORTED;
-
- if (!ctf_assert (fp, (filter_syms && symfp)
- || (!filter_syms && !symfp
- && ((symflags & CTF_SYMTYPETAB_FORCE_INDEXED) != 0))))
- return -1;
-
- /* Work out the sizes of the object and function sections, and work out the
- number of pad (unassigned) symbols in each, and the overall size of the
- sections. */
-
- if (symtypetab_density (fp, symfp, fp->ctf_objthash, &nobjts, &maxobjt,
- &objt_unpadsize, &objt_padsize, &objtidx_size,
- symflags) < 0)
- return -1; /* errno is set for us. */
-
- ctf_dprintf ("Object symtypetab: %i objects, max %i, unpadded size %i, "
- "%i bytes of pads, index size %i\n", (int) nobjts, (int) maxobjt,
- (int) objt_unpadsize, (int) objt_padsize, (int) objtidx_size);
-
- if (symtypetab_density (fp, symfp, fp->ctf_funchash, &nfuncs, &maxfunc,
- &func_unpadsize, &func_padsize, &funcidx_size,
- symflags | CTF_SYMTYPETAB_EMIT_FUNCTION) < 0)
- return -1; /* errno is set for us. */
-
- ctf_dprintf ("Function symtypetab: %i functions, max %i, unpadded size %i, "
- "%i bytes of pads, index size %i\n", (int) nfuncs, (int) maxfunc,
- (int) func_unpadsize, (int) func_padsize, (int) funcidx_size);
-
- /* If we are filtering symbols out, those symbols that the linker has not
- reported have now been removed from the ctf_objthash and ctf_funchash.
- Delete entries from the variable section that duplicate newly-added data
- symbols. There's no need to migrate new ones in, because the compiler
- always emits both a variable and a data symbol simultaneously, and
- filtering only happens at final link time. */
-
- if (filter_syms && symfp->ctf_dynsyms &&
- symtypetab_delete_nonstatic_vars (fp, symfp) < 0)
- return -1;
-
- /* It is worth indexing each section if it would save space to do so, due to
- reducing the number of pads sufficiently. A pad is the same size as a
- single index entry: but index sections compress relatively poorly compared
- to constant pads, so it takes a lot of contiguous padding to equal one
- index section entry. It would be nice to be able to *verify* whether we
- would save space after compression rather than guessing, but this seems
- difficult, since it would require complete reserialization. Regardless, if
- the linker has not reported any symbols (e.g. if this is not a final link
- but just an ld -r), we must emit things in indexed fashion just as the
- compiler does. */
-
- objt_size = objt_unpadsize;
- if (!(symflags & CTF_SYMTYPETAB_FORCE_INDEXED)
- && ((objt_padsize + objt_unpadsize) * CTF_INDEX_PAD_THRESHOLD
- > objt_padsize))
- {
- objt_size += objt_padsize;
- objtidx_size = 0;
- }
-
- func_size = func_unpadsize;
- if (!(symflags & CTF_SYMTYPETAB_FORCE_INDEXED)
- && ((func_padsize + func_unpadsize) * CTF_INDEX_PAD_THRESHOLD
- > func_padsize))
- {
- func_size += func_padsize;
- funcidx_size = 0;
- }
-
- /* Computing the number of entries in the CTF variable section is much
- simpler. */
-
- for (nvars = 0, dvd = ctf_list_next (&fp->ctf_dvdefs);
- dvd != NULL; dvd = ctf_list_next (dvd), nvars++);
-
- /* Compute the size of the CTF buffer we need, sans only the string table,
- then allocate a new buffer and memcpy the finished header to the start of
- the buffer. (We will adjust this later with strtab length info.) */
-
- hdr.cth_lbloff = hdr.cth_objtoff = 0;
- hdr.cth_funcoff = hdr.cth_objtoff + objt_size;
- hdr.cth_objtidxoff = hdr.cth_funcoff + func_size;
- hdr.cth_funcidxoff = hdr.cth_objtidxoff + objtidx_size;
- hdr.cth_varoff = hdr.cth_funcidxoff + funcidx_size;
- hdr.cth_typeoff = hdr.cth_varoff + (nvars * sizeof (ctf_varent_t));
- hdr.cth_stroff = hdr.cth_typeoff + type_size;
- hdr.cth_strlen = 0;
-
- buf_size = sizeof (ctf_header_t) + hdr.cth_stroff + hdr.cth_strlen;
-
- if ((buf = malloc (buf_size)) == NULL)
- return (ctf_set_errno (fp, EAGAIN));
-
- memcpy (buf, &hdr, sizeof (ctf_header_t));
- t = (unsigned char *) buf + sizeof (ctf_header_t) + hdr.cth_objtoff;
-
- hdrp = (ctf_header_t *) buf;
- if ((fp->ctf_flags & LCTF_CHILD) && (fp->ctf_parname != NULL))
- ctf_str_add_ref (fp, fp->ctf_parname, &hdrp->cth_parname);
- if (fp->ctf_cuname != NULL)
- ctf_str_add_ref (fp, fp->ctf_cuname, &hdrp->cth_cuname);
-
- /* Sort the linker's symbols into name order if need be. */
-
- if ((objtidx_size != 0) || (funcidx_size != 0))
- {
- ctf_next_t *i = NULL;
- void *symname;
- const char **walk;
-
- if (filter_syms)
- {
- if (symfp->ctf_dynsyms)
- nsymtypes = ctf_dynhash_elements (symfp->ctf_dynsyms);
- else
- nsymtypes = 0;
- }
- else
- nsymtypes = ctf_dynhash_elements (fp->ctf_objthash)
- + ctf_dynhash_elements (fp->ctf_funchash);
-
- if ((sym_name_order = calloc (nsymtypes, sizeof (const char *))) == NULL)
- goto oom;
-
- walk = sym_name_order;
-
- if (filter_syms)
- {
- if (symfp->ctf_dynsyms)
- {
- while ((err = ctf_dynhash_next_sorted (symfp->ctf_dynsyms, &i,
- &symname, NULL,
- ctf_dynhash_sort_by_name,
- NULL)) == 0)
- *walk++ = (const char *) symname;
- if (err != ECTF_NEXT_END)
- goto symerr;
- }
- }
- else
- {
- ctf_hash_sort_f sort_fun = NULL;
-
- /* Since we partition the set of symbols back into objt and func,
- we can sort the two independently without harm. */
- if (sort_syms)
- sort_fun = ctf_dynhash_sort_by_name;
-
- while ((err = ctf_dynhash_next_sorted (fp->ctf_objthash, &i, &symname,
- NULL, sort_fun, NULL)) == 0)
- *walk++ = (const char *) symname;
- if (err != ECTF_NEXT_END)
- goto symerr;
-
- while ((err = ctf_dynhash_next_sorted (fp->ctf_funchash, &i, &symname,
- NULL, sort_fun, NULL)) == 0)
- *walk++ = (const char *) symname;
- if (err != ECTF_NEXT_END)
- goto symerr;
- }
- }
-
- /* Emit the object and function sections, and if necessary their indexes.
- Emission is done in symtab order if there is no index, and in index
- (name) order otherwise. */
-
- if ((objtidx_size == 0) && symfp && symfp->ctf_dynsymidx)
- {
- ctf_dprintf ("Emitting unindexed objt symtypetab\n");
- if (emit_symtypetab (fp, symfp, (uint32_t *) t, symfp->ctf_dynsymidx,
- NULL, symfp->ctf_dynsymmax + 1, maxobjt, objt_size,
- symflags | CTF_SYMTYPETAB_EMIT_PAD) < 0)
- goto err; /* errno is set for us. */
- }
- else
- {
- ctf_dprintf ("Emitting indexed objt symtypetab\n");
- if (emit_symtypetab (fp, symfp, (uint32_t *) t, NULL, sym_name_order,
- nsymtypes, maxobjt, objt_size, symflags) < 0)
- goto err; /* errno is set for us. */
- }
-
- t += objt_size;
-
- if ((funcidx_size == 0) && symfp && symfp->ctf_dynsymidx)
- {
- ctf_dprintf ("Emitting unindexed func symtypetab\n");
- if (emit_symtypetab (fp, symfp, (uint32_t *) t, symfp->ctf_dynsymidx,
- NULL, symfp->ctf_dynsymmax + 1, maxfunc,
- func_size, symflags | CTF_SYMTYPETAB_EMIT_FUNCTION
- | CTF_SYMTYPETAB_EMIT_PAD) < 0)
- goto err; /* errno is set for us. */
- }
- else
- {
- ctf_dprintf ("Emitting indexed func symtypetab\n");
- if (emit_symtypetab (fp, symfp, (uint32_t *) t, NULL, sym_name_order,
- nsymtypes, maxfunc, func_size,
- symflags | CTF_SYMTYPETAB_EMIT_FUNCTION) < 0)
- goto err; /* errno is set for us. */
- }
-
- t += func_size;
-
- if (objtidx_size > 0)
- if (emit_symtypetab_index (fp, symfp, (uint32_t *) t, sym_name_order,
- nsymtypes, objtidx_size, symflags) < 0)
- goto err;
-
- t += objtidx_size;
-
- if (funcidx_size > 0)
- if (emit_symtypetab_index (fp, symfp, (uint32_t *) t, sym_name_order,
- nsymtypes, funcidx_size,
- symflags | CTF_SYMTYPETAB_EMIT_FUNCTION) < 0)
- goto err;
-
- t += funcidx_size;
- free (sym_name_order);
- sym_name_order = NULL;
-
- /* Work over the variable list, translating everything into ctf_varent_t's and
- prepping the string table. */
-
- dvarents = (ctf_varent_t *) t;
- for (i = 0, dvd = ctf_list_next (&fp->ctf_dvdefs); dvd != NULL;
- dvd = ctf_list_next (dvd), i++)
- {
- ctf_varent_t *var = &dvarents[i];
-
- ctf_str_add_ref (fp, dvd->dvd_name, &var->ctv_name);
- var->ctv_type = (uint32_t) dvd->dvd_type;
- }
- assert (i == nvars);
-
- t += sizeof (ctf_varent_t) * nvars;
-
- assert (t == (unsigned char *) buf + sizeof (ctf_header_t) + hdr.cth_typeoff);
-
- /* We now take a final lap through the dynamic type definition list and copy
- the appropriate type records to the output buffer, noting down the
- strings as we go. */
-
- for (dtd = ctf_list_next (&fp->ctf_dtdefs);
- dtd != NULL; dtd = ctf_list_next (dtd))
- {
- uint32_t kind = LCTF_INFO_KIND (fp, dtd->dtd_data.ctt_info);
- uint32_t vlen = LCTF_INFO_VLEN (fp, dtd->dtd_data.ctt_info);
-
- ctf_array_t cta;
- uint32_t encoding;
- size_t len;
- ctf_stype_t *copied;
- const char *name;
-
- if (dtd->dtd_data.ctt_size != CTF_LSIZE_SENT)
- len = sizeof (ctf_stype_t);
- else
- len = sizeof (ctf_type_t);
-
- memcpy (t, &dtd->dtd_data, len);
- copied = (ctf_stype_t *) t; /* name is at the start: constant offset. */
- if (copied->ctt_name
- && (name = ctf_strraw (fp, copied->ctt_name)) != NULL)
- ctf_str_add_ref (fp, name, &copied->ctt_name);
- t += len;
-
- switch (kind)
- {
- case CTF_K_INTEGER:
- case CTF_K_FLOAT:
- if (kind == CTF_K_INTEGER)
- {
- encoding = CTF_INT_DATA (dtd->dtd_u.dtu_enc.cte_format,
- dtd->dtd_u.dtu_enc.cte_offset,
- dtd->dtd_u.dtu_enc.cte_bits);
- }
- else
- {
- encoding = CTF_FP_DATA (dtd->dtd_u.dtu_enc.cte_format,
- dtd->dtd_u.dtu_enc.cte_offset,
- dtd->dtd_u.dtu_enc.cte_bits);
- }
- memcpy (t, &encoding, sizeof (encoding));
- t += sizeof (encoding);
- break;
-
- case CTF_K_SLICE:
- memcpy (t, &dtd->dtd_u.dtu_slice, sizeof (struct ctf_slice));
- t += sizeof (struct ctf_slice);
- break;
-
- case CTF_K_ARRAY:
- cta.cta_contents = (uint32_t) dtd->dtd_u.dtu_arr.ctr_contents;
- cta.cta_index = (uint32_t) dtd->dtd_u.dtu_arr.ctr_index;
- cta.cta_nelems = dtd->dtd_u.dtu_arr.ctr_nelems;
- memcpy (t, &cta, sizeof (cta));
- t += sizeof (cta);
- break;
-
- case CTF_K_FUNCTION:
- {
- uint32_t *argv = (uint32_t *) (uintptr_t) t;
- uint32_t argc;
-
- for (argc = 0; argc < vlen; argc++)
- *argv++ = dtd->dtd_u.dtu_argv[argc];
-
- if (vlen & 1)
- *argv++ = 0; /* Pad to 4-byte boundary. */
-
- t = (unsigned char *) argv;
- break;
- }
-
- case CTF_K_STRUCT:
- case CTF_K_UNION:
- if (dtd->dtd_data.ctt_size < CTF_LSTRUCT_THRESH)
- t = ctf_copy_smembers (fp, dtd, t);
- else
- t = ctf_copy_lmembers (fp, dtd, t);
- break;
-
- case CTF_K_ENUM:
- t = ctf_copy_emembers (fp, dtd, t);
- break;
- }
- }
- assert (t == (unsigned char *) buf + sizeof (ctf_header_t) + hdr.cth_stroff);
-
- /* Construct the final string table and fill out all the string refs with the
- final offsets. Then purge the refs list, because we're about to move this
- strtab onto the end of the buf, invalidating all the offsets. */
- strtab = ctf_str_write_strtab (fp);
- ctf_str_purge_refs (fp);
-
- if (strtab.cts_strs == NULL)
- goto oom;
-
- /* Now the string table is constructed, we can sort the buffer of
- ctf_varent_t's. */
- ctf_sort_var_arg_cb_t sort_var_arg = { fp, (ctf_strs_t *) &strtab };
- ctf_qsort_r (dvarents, nvars, sizeof (ctf_varent_t), ctf_sort_var,
- &sort_var_arg);
-
- if ((newbuf = ctf_realloc (fp, buf, buf_size + strtab.cts_len)) == NULL)
- {
- free (strtab.cts_strs);
- goto oom;
- }
- buf = newbuf;
- memcpy (buf + buf_size, strtab.cts_strs, strtab.cts_len);
- hdrp = (ctf_header_t *) buf;
- hdrp->cth_strlen = strtab.cts_len;
- buf_size += hdrp->cth_strlen;
- free (strtab.cts_strs);
-
- /* Finally, we are ready to ctf_simple_open() the new dict. If this is
- successful, we then switch nfp and fp and free the old dict. */
-
- if ((nfp = ctf_simple_open_internal ((char *) buf, buf_size, NULL, 0,
- 0, NULL, 0, fp->ctf_syn_ext_strtab,
- 1, &err)) == NULL)
- {
- free (buf);
- return (ctf_set_errno (fp, err));
- }
-
- (void) ctf_setmodel (nfp, ctf_getmodel (fp));
-
- nfp->ctf_parent = fp->ctf_parent;
- nfp->ctf_parent_unreffed = fp->ctf_parent_unreffed;
- nfp->ctf_refcnt = fp->ctf_refcnt;
- nfp->ctf_flags |= fp->ctf_flags & ~LCTF_DIRTY;
- if (nfp->ctf_dynbase == NULL)
- nfp->ctf_dynbase = buf; /* Make sure buf is freed on close. */
- nfp->ctf_dthash = fp->ctf_dthash;
- nfp->ctf_dtdefs = fp->ctf_dtdefs;
- nfp->ctf_dvhash = fp->ctf_dvhash;
- nfp->ctf_dvdefs = fp->ctf_dvdefs;
- nfp->ctf_dtoldid = fp->ctf_dtoldid;
- nfp->ctf_add_processing = fp->ctf_add_processing;
- nfp->ctf_snapshots = fp->ctf_snapshots + 1;
- nfp->ctf_specific = fp->ctf_specific;
- nfp->ctf_nfuncidx = fp->ctf_nfuncidx;
- nfp->ctf_nobjtidx = fp->ctf_nobjtidx;
- nfp->ctf_objthash = fp->ctf_objthash;
- nfp->ctf_funchash = fp->ctf_funchash;
- nfp->ctf_dynsyms = fp->ctf_dynsyms;
- nfp->ctf_ptrtab = fp->ctf_ptrtab;
- nfp->ctf_pptrtab = fp->ctf_pptrtab;
- nfp->ctf_dynsymidx = fp->ctf_dynsymidx;
- nfp->ctf_dynsymmax = fp->ctf_dynsymmax;
- nfp->ctf_ptrtab_len = fp->ctf_ptrtab_len;
- nfp->ctf_pptrtab_len = fp->ctf_pptrtab_len;
- nfp->ctf_link_inputs = fp->ctf_link_inputs;
- nfp->ctf_link_outputs = fp->ctf_link_outputs;
- nfp->ctf_errs_warnings = fp->ctf_errs_warnings;
- nfp->ctf_funcidx_names = fp->ctf_funcidx_names;
- nfp->ctf_objtidx_names = fp->ctf_objtidx_names;
- nfp->ctf_funcidx_sxlate = fp->ctf_funcidx_sxlate;
- nfp->ctf_objtidx_sxlate = fp->ctf_objtidx_sxlate;
- nfp->ctf_str_prov_offset = fp->ctf_str_prov_offset;
- nfp->ctf_syn_ext_strtab = fp->ctf_syn_ext_strtab;
- nfp->ctf_pptrtab_typemax = fp->ctf_pptrtab_typemax;
- nfp->ctf_in_flight_dynsyms = fp->ctf_in_flight_dynsyms;
- nfp->ctf_link_in_cu_mapping = fp->ctf_link_in_cu_mapping;
- nfp->ctf_link_out_cu_mapping = fp->ctf_link_out_cu_mapping;
- nfp->ctf_link_type_mapping = fp->ctf_link_type_mapping;
- nfp->ctf_link_memb_name_changer = fp->ctf_link_memb_name_changer;
- nfp->ctf_link_memb_name_changer_arg = fp->ctf_link_memb_name_changer_arg;
- nfp->ctf_link_variable_filter = fp->ctf_link_variable_filter;
- nfp->ctf_link_variable_filter_arg = fp->ctf_link_variable_filter_arg;
- nfp->ctf_symsect_little_endian = fp->ctf_symsect_little_endian;
- nfp->ctf_link_flags = fp->ctf_link_flags;
- nfp->ctf_dedup_atoms = fp->ctf_dedup_atoms;
- nfp->ctf_dedup_atoms_alloc = fp->ctf_dedup_atoms_alloc;
- memcpy (&nfp->ctf_dedup, &fp->ctf_dedup, sizeof (fp->ctf_dedup));
-
- nfp->ctf_snapshot_lu = fp->ctf_snapshots;
-
- memcpy (&nfp->ctf_lookups, fp->ctf_lookups, sizeof (fp->ctf_lookups));
- nfp->ctf_structs = fp->ctf_structs;
- nfp->ctf_unions = fp->ctf_unions;
- nfp->ctf_enums = fp->ctf_enums;
- nfp->ctf_names = fp->ctf_names;
-
- fp->ctf_dthash = NULL;
- ctf_str_free_atoms (nfp);
- nfp->ctf_str_atoms = fp->ctf_str_atoms;
- nfp->ctf_prov_strtab = fp->ctf_prov_strtab;
- fp->ctf_str_atoms = NULL;
- fp->ctf_prov_strtab = NULL;
- memset (&fp->ctf_dtdefs, 0, sizeof (ctf_list_t));
- memset (&fp->ctf_errs_warnings, 0, sizeof (ctf_list_t));
- fp->ctf_add_processing = NULL;
- fp->ctf_ptrtab = NULL;
- fp->ctf_pptrtab = NULL;
- fp->ctf_funcidx_names = NULL;
- fp->ctf_objtidx_names = NULL;
- fp->ctf_funcidx_sxlate = NULL;
- fp->ctf_objtidx_sxlate = NULL;
- fp->ctf_objthash = NULL;
- fp->ctf_funchash = NULL;
- fp->ctf_dynsyms = NULL;
- fp->ctf_dynsymidx = NULL;
- fp->ctf_link_inputs = NULL;
- fp->ctf_link_outputs = NULL;
- fp->ctf_syn_ext_strtab = NULL;
- fp->ctf_link_in_cu_mapping = NULL;
- fp->ctf_link_out_cu_mapping = NULL;
- fp->ctf_link_type_mapping = NULL;
- fp->ctf_dedup_atoms = NULL;
- fp->ctf_dedup_atoms_alloc = NULL;
- fp->ctf_parent_unreffed = 1;
-
- fp->ctf_dvhash = NULL;
- memset (&fp->ctf_dvdefs, 0, sizeof (ctf_list_t));
- memset (fp->ctf_lookups, 0, sizeof (fp->ctf_lookups));
- memset (&fp->ctf_in_flight_dynsyms, 0, sizeof (fp->ctf_in_flight_dynsyms));
- memset (&fp->ctf_dedup, 0, sizeof (fp->ctf_dedup));
- fp->ctf_structs.ctn_writable = NULL;
- fp->ctf_unions.ctn_writable = NULL;
- fp->ctf_enums.ctn_writable = NULL;
- fp->ctf_names.ctn_writable = NULL;
-
- memcpy (&ofp, fp, sizeof (ctf_dict_t));
- memcpy (fp, nfp, sizeof (ctf_dict_t));
- memcpy (nfp, &ofp, sizeof (ctf_dict_t));
-
- nfp->ctf_refcnt = 1; /* Force nfp to be freed. */
- ctf_dict_close (nfp);
-
- return 0;
-
-symerr:
- ctf_err_warn (fp, 0, err, _("error serializing symtypetabs"));
- goto err;
-oom:
- free (buf);
- free (sym_name_order);
- return (ctf_set_errno (fp, EAGAIN));
-err:
- free (buf);
- free (sym_name_order);
- return -1; /* errno is set for us. */
-}
-
ctf_names_t *
ctf_name_table (ctf_dict_t *fp, int kind)
{
return id;
}
-
-/* Write the compressed CTF data stream to the specified gzFile descriptor. */
-int
-ctf_gzwrite (ctf_dict_t *fp, gzFile fd)
-{
- const unsigned char *buf;
- ssize_t resid;
- ssize_t len;
-
- resid = sizeof (ctf_header_t);
- buf = (unsigned char *) fp->ctf_header;
- while (resid != 0)
- {
- if ((len = gzwrite (fd, buf, resid)) <= 0)
- return (ctf_set_errno (fp, errno));
- resid -= len;
- buf += len;
- }
-
- resid = fp->ctf_size;
- buf = fp->ctf_buf;
- while (resid != 0)
- {
- if ((len = gzwrite (fd, buf, resid)) <= 0)
- return (ctf_set_errno (fp, errno));
- resid -= len;
- buf += len;
- }
-
- return 0;
-}
-
-/* Compress the specified CTF data stream and write it to the specified file
- descriptor. */
-int
-ctf_compress_write (ctf_dict_t *fp, int fd)
-{
- unsigned char *buf;
- unsigned char *bp;
- ctf_header_t h;
- ctf_header_t *hp = &h;
- ssize_t header_len = sizeof (ctf_header_t);
- ssize_t compress_len;
- ssize_t len;
- int rc;
- int err = 0;
-
- if (ctf_serialize (fp) < 0)
- return -1; /* errno is set for us. */
-
- memcpy (hp, fp->ctf_header, header_len);
- hp->cth_flags |= CTF_F_COMPRESS;
- compress_len = compressBound (fp->ctf_size);
-
- if ((buf = malloc (compress_len)) == NULL)
- {
- ctf_err_warn (fp, 0, 0, _("ctf_compress_write: cannot allocate %li bytes"),
- (unsigned long) compress_len);
- return (ctf_set_errno (fp, ECTF_ZALLOC));
- }
-
- if ((rc = compress (buf, (uLongf *) &compress_len,
- fp->ctf_buf, fp->ctf_size)) != Z_OK)
- {
- err = ctf_set_errno (fp, ECTF_COMPRESS);
- ctf_err_warn (fp, 0, 0, _("zlib deflate err: %s"), zError (rc));
- goto ret;
- }
-
- while (header_len > 0)
- {
- if ((len = write (fd, hp, header_len)) < 0)
- {
- err = ctf_set_errno (fp, errno);
- ctf_err_warn (fp, 0, 0, _("ctf_compress_write: error writing header"));
- goto ret;
- }
- header_len -= len;
- hp += len;
- }
-
- bp = buf;
- while (compress_len > 0)
- {
- if ((len = write (fd, bp, compress_len)) < 0)
- {
- err = ctf_set_errno (fp, errno);
- ctf_err_warn (fp, 0, 0, _("ctf_compress_write: error writing"));
- goto ret;
- }
- compress_len -= len;
- bp += len;
- }
-
-ret:
- free (buf);
- return err;
-}
-
-/* Optionally compress the specified CTF data stream and return it as a new
- dynamically-allocated string. */
-unsigned char *
-ctf_write_mem (ctf_dict_t *fp, size_t *size, size_t threshold)
-{
- unsigned char *buf;
- unsigned char *bp;
- ctf_header_t *hp;
- ssize_t header_len = sizeof (ctf_header_t);
- ssize_t compress_len;
- int rc;
-
- if (ctf_serialize (fp) < 0)
- return NULL; /* errno is set for us. */
-
- compress_len = compressBound (fp->ctf_size);
- if (fp->ctf_size < threshold)
- compress_len = fp->ctf_size;
- if ((buf = malloc (compress_len
- + sizeof (struct ctf_header))) == NULL)
- {
- ctf_set_errno (fp, ENOMEM);
- ctf_err_warn (fp, 0, 0, _("ctf_write_mem: cannot allocate %li bytes"),
- (unsigned long) (compress_len + sizeof (struct ctf_header)));
- return NULL;
- }
-
- hp = (ctf_header_t *) buf;
- memcpy (hp, fp->ctf_header, header_len);
- bp = buf + sizeof (struct ctf_header);
- *size = sizeof (struct ctf_header);
-
- if (fp->ctf_size < threshold)
- {
- hp->cth_flags &= ~CTF_F_COMPRESS;
- memcpy (bp, fp->ctf_buf, fp->ctf_size);
- *size += fp->ctf_size;
- }
- else
- {
- hp->cth_flags |= CTF_F_COMPRESS;
- if ((rc = compress (bp, (uLongf *) &compress_len,
- fp->ctf_buf, fp->ctf_size)) != Z_OK)
- {
- ctf_set_errno (fp, ECTF_COMPRESS);
- ctf_err_warn (fp, 0, 0, _("zlib deflate err: %s"), zError (rc));
- free (buf);
- return NULL;
- }
- *size += compress_len;
- }
- return buf;
-}
-
-/* Write the uncompressed CTF data stream to the specified file descriptor. */
-int
-ctf_write (ctf_dict_t *fp, int fd)
-{
- const unsigned char *buf;
- ssize_t resid;
- ssize_t len;
-
- if (ctf_serialize (fp) < 0)
- return -1; /* errno is set for us. */
-
- resid = sizeof (ctf_header_t);
- buf = (unsigned char *) fp->ctf_header;
- while (resid != 0)
- {
- if ((len = write (fd, buf, resid)) <= 0)
- {
- ctf_err_warn (fp, 0, errno, _("ctf_write: error writing header"));
- return (ctf_set_errno (fp, errno));
- }
- resid -= len;
- buf += len;
- }
-
- resid = fp->ctf_size;
- buf = fp->ctf_buf;
- while (resid != 0)
- {
- if ((len = write (fd, buf, resid)) <= 0)
- {
- ctf_err_warn (fp, 0, errno, _("ctf_write: error writing"));
- return (ctf_set_errno (fp, errno));
- }
- resid -= len;
- buf += len;
- }
-
- return 0;
-}
--- /dev/null
+/* CTF dict creation.
+ Copyright (C) 2019-2021 Free Software Foundation, Inc.
+
+ This file is part of libctf.
+
+ libctf is free software; you can redistribute it and/or modify it under
+ the terms of the GNU General Public License as published by the Free
+ Software Foundation; either version 3, or (at your option) any later
+ version.
+
+ This program is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; see the file COPYING. If not see
+ <http://www.gnu.org/licenses/>. */
+
+#include <ctf-impl.h>
+#include <assert.h>
+#include <string.h>
+#include <unistd.h>
+#include <zlib.h>
+
+#include <elf.h>
+#include "elf-bfd.h"
+
+/* Delete data symbols that have been assigned names from the variable section.
+ Must be called from within ctf_serialize, because that is the only place
+ you can safely delete variables without messing up ctf_rollback. */
+
+static int
+symtypetab_delete_nonstatic_vars (ctf_dict_t *fp, ctf_dict_t *symfp)
+{
+ ctf_dvdef_t *dvd, *nvd;
+ ctf_id_t type;
+
+ for (dvd = ctf_list_next (&fp->ctf_dvdefs); dvd != NULL; dvd = nvd)
+ {
+ nvd = ctf_list_next (dvd);
+
+ if (((type = (ctf_id_t) (uintptr_t)
+ ctf_dynhash_lookup (fp->ctf_objthash, dvd->dvd_name)) > 0)
+ && ctf_dynhash_lookup (symfp->ctf_dynsyms, dvd->dvd_name) != NULL
+ && type == dvd->dvd_type)
+ ctf_dvd_delete (fp, dvd);
+ }
+
+ return 0;
+}
+
+/* Determine if a symbol is "skippable" and should never appear in the
+ symtypetab sections. */
+
+int
+ctf_symtab_skippable (ctf_link_sym_t *sym)
+{
+ /* Never skip symbols whose name is not yet known. */
+ if (sym->st_nameidx_set)
+ return 0;
+
+ return (sym->st_name == NULL || sym->st_name[0] == 0
+ || sym->st_shndx == SHN_UNDEF
+ || strcmp (sym->st_name, "_START_") == 0
+ || strcmp (sym->st_name, "_END_") == 0
+ || (sym->st_type == STT_OBJECT && sym->st_shndx == SHN_EXTABS
+ && sym->st_value == 0));
+}
+
+/* Symtypetab emission flags. */
+
+#define CTF_SYMTYPETAB_EMIT_FUNCTION 0x1
+#define CTF_SYMTYPETAB_EMIT_PAD 0x2
+#define CTF_SYMTYPETAB_FORCE_INDEXED 0x4
+
+/* Get the number of symbols in a symbol hash, the count of symbols, the maximum
+ seen, the eventual size, without any padding elements, of the func/data and
+ (if generated) index sections, and the size of accumulated padding elements.
+ The linker-reported set of symbols is found in SYMFP: it may be NULL if
+ symbol filtering is not desired, in which case CTF_SYMTYPETAB_FORCE_INDEXED
+ will always be set in the flags.
+
+ Also figure out if any symbols need to be moved to the variable section, and
+ add them (if not already present). */
+
+_libctf_nonnull_ ((1,3,4,5,6,7,8))
+static int
+symtypetab_density (ctf_dict_t *fp, ctf_dict_t *symfp, ctf_dynhash_t *symhash,
+ size_t *count, size_t *max, size_t *unpadsize,
+ size_t *padsize, size_t *idxsize, int flags)
+{
+ ctf_next_t *i = NULL;
+ const void *name;
+ const void *ctf_sym;
+ ctf_dynhash_t *linker_known = NULL;
+ int err;
+ int beyond_max = 0;
+
+ *count = 0;
+ *max = 0;
+ *unpadsize = 0;
+ *idxsize = 0;
+ *padsize = 0;
+
+ if (!(flags & CTF_SYMTYPETAB_FORCE_INDEXED))
+ {
+ /* Make a dynhash citing only symbols reported by the linker of the
+ appropriate type, then traverse all potential-symbols we know the types
+ of, removing them from linker_known as we go. Once this is done, the
+ only symbols remaining in linker_known are symbols we don't know the
+ types of: we must emit pads for those symbols that are below the
+ maximum symbol we will emit (any beyond that are simply skipped).
+
+ If there are none, this symtypetab will be empty: just report that. */
+
+ if (!symfp->ctf_dynsyms)
+ return 0;
+
+ if ((linker_known = ctf_dynhash_create (ctf_hash_string, ctf_hash_eq_string,
+ NULL, NULL)) == NULL)
+ return (ctf_set_errno (fp, ENOMEM));
+
+ while ((err = ctf_dynhash_cnext (symfp->ctf_dynsyms, &i,
+ &name, &ctf_sym)) == 0)
+ {
+ ctf_link_sym_t *sym = (ctf_link_sym_t *) ctf_sym;
+
+ if (((flags & CTF_SYMTYPETAB_EMIT_FUNCTION)
+ && sym->st_type != STT_FUNC)
+ || (!(flags & CTF_SYMTYPETAB_EMIT_FUNCTION)
+ && sym->st_type != STT_OBJECT))
+ continue;
+
+ if (ctf_symtab_skippable (sym))
+ continue;
+
+ /* This should only be true briefly before all the names are
+ finalized, long before we get this far. */
+ if (!ctf_assert (fp, !sym->st_nameidx_set))
+ return -1; /* errno is set for us. */
+
+ if (ctf_dynhash_cinsert (linker_known, name, ctf_sym) < 0)
+ {
+ ctf_dynhash_destroy (linker_known);
+ return (ctf_set_errno (fp, ENOMEM));
+ }
+ }
+ if (err != ECTF_NEXT_END)
+ {
+ ctf_err_warn (fp, 0, err, _("iterating over linker-known symbols during "
+ "serialization"));
+ ctf_dynhash_destroy (linker_known);
+ return (ctf_set_errno (fp, err));
+ }
+ }
+
+ while ((err = ctf_dynhash_cnext (symhash, &i, &name, NULL)) == 0)
+ {
+ ctf_link_sym_t *sym;
+
+ if (!(flags & CTF_SYMTYPETAB_FORCE_INDEXED))
+ {
+ /* Linker did not report symbol in symtab. Remove it from the
+ set of known data symbols and continue. */
+ if ((sym = ctf_dynhash_lookup (symfp->ctf_dynsyms, name)) == NULL)
+ {
+ ctf_dynhash_remove (symhash, name);
+ continue;
+ }
+
+ /* We don't remove skippable symbols from the symhash because we don't
+ want them to be migrated into variables. */
+ if (ctf_symtab_skippable (sym))
+ continue;
+
+ if ((flags & CTF_SYMTYPETAB_EMIT_FUNCTION)
+ && sym->st_type != STT_FUNC)
+ {
+ ctf_err_warn (fp, 1, 0, _("symbol %s (%x) added to CTF as a "
+ "function but is of type %x. "
+ "The symbol type lookup tables "
+ "are probably corrupted"),
+ sym->st_name, sym->st_symidx, sym->st_type);
+ ctf_dynhash_remove (symhash, name);
+ continue;
+ }
+ else if (!(flags & CTF_SYMTYPETAB_EMIT_FUNCTION)
+ && sym->st_type != STT_OBJECT)
+ {
+ ctf_err_warn (fp, 1, 0, _("symbol %s (%x) added to CTF as a "
+ "data object but is of type %x. "
+ "The symbol type lookup tables "
+ "are probably corrupted"),
+ sym->st_name, sym->st_symidx, sym->st_type);
+ ctf_dynhash_remove (symhash, name);
+ continue;
+ }
+
+ ctf_dynhash_remove (linker_known, name);
+ }
+ *unpadsize += sizeof (uint32_t);
+ (*count)++;
+
+ if (!(flags & CTF_SYMTYPETAB_FORCE_INDEXED))
+ {
+ if (*max < sym->st_symidx)
+ *max = sym->st_symidx;
+ }
+ else
+ (*max)++;
+ }
+ if (err != ECTF_NEXT_END)
+ {
+ ctf_err_warn (fp, 0, err, _("iterating over CTF symtypetab during "
+ "serialization"));
+ ctf_dynhash_destroy (linker_known);
+ return (ctf_set_errno (fp, err));
+ }
+
+ if (!(flags & CTF_SYMTYPETAB_FORCE_INDEXED))
+ {
+ while ((err = ctf_dynhash_cnext (linker_known, &i, NULL, &ctf_sym)) == 0)
+ {
+ ctf_link_sym_t *sym = (ctf_link_sym_t *) ctf_sym;
+
+ if (sym->st_symidx > *max)
+ beyond_max++;
+ }
+ if (err != ECTF_NEXT_END)
+ {
+ ctf_err_warn (fp, 0, err, _("iterating over linker-known symbols "
+ "during CTF serialization"));
+ ctf_dynhash_destroy (linker_known);
+ return (ctf_set_errno (fp, err));
+ }
+ }
+
+ *idxsize = *count * sizeof (uint32_t);
+ if (!(flags & CTF_SYMTYPETAB_FORCE_INDEXED))
+ *padsize = (ctf_dynhash_elements (linker_known) - beyond_max) * sizeof (uint32_t);
+
+ ctf_dynhash_destroy (linker_known);
+ return 0;
+}
+
+/* Emit an objt or func symtypetab into DP in a particular order defined by an
+ array of ctf_link_sym_t or symbol names passed in. The index has NIDX
+ elements in it: unindexed output would terminate at symbol OUTMAX and is in
+ any case no larger than SIZE bytes. Some index elements are expected to be
+ skipped: see symtypetab_density. The linker-reported set of symbols (if any)
+ is found in SYMFP. */
+static int
+emit_symtypetab (ctf_dict_t *fp, ctf_dict_t *symfp, uint32_t *dp,
+ ctf_link_sym_t **idx, const char **nameidx, uint32_t nidx,
+ uint32_t outmax, int size, int flags)
+{
+ uint32_t i;
+ uint32_t *dpp = dp;
+ ctf_dynhash_t *symhash;
+
+ ctf_dprintf ("Emitting table of size %i, outmax %u, %u symtypetab entries, "
+ "flags %i\n", size, outmax, nidx, flags);
+
+ /* Empty table? Nothing to do. */
+ if (size == 0)
+ return 0;
+
+ if (flags & CTF_SYMTYPETAB_EMIT_FUNCTION)
+ symhash = fp->ctf_funchash;
+ else
+ symhash = fp->ctf_objthash;
+
+ for (i = 0; i < nidx; i++)
+ {
+ const char *sym_name;
+ void *type;
+
+ /* If we have a linker-reported set of symbols, we may be given that set
+ to work from, or a set of symbol names. In both cases we want to look
+ at the corresponding linker-reported symbol (if any). */
+ if (!(flags & CTF_SYMTYPETAB_FORCE_INDEXED))
+ {
+ ctf_link_sym_t *this_link_sym;
+
+ if (idx)
+ this_link_sym = idx[i];
+ else
+ this_link_sym = ctf_dynhash_lookup (symfp->ctf_dynsyms, nameidx[i]);
+
+ /* Unreported symbol number. No pad, no nothing. */
+ if (!this_link_sym)
+ continue;
+
+ /* Symbol of the wrong type, or skippable? This symbol is not in this
+ table. */
+ if (((flags & CTF_SYMTYPETAB_EMIT_FUNCTION)
+ && this_link_sym->st_type != STT_FUNC)
+ || (!(flags & CTF_SYMTYPETAB_EMIT_FUNCTION)
+ && this_link_sym->st_type != STT_OBJECT))
+ continue;
+
+ if (ctf_symtab_skippable (this_link_sym))
+ continue;
+
+ sym_name = this_link_sym->st_name;
+
+ /* Linker reports symbol of a different type to the symbol we actually
+ added? Skip the symbol. No pad, since the symbol doesn't actually
+ belong in this table at all. (Warned about in
+ symtypetab_density.) */
+ if ((this_link_sym->st_type == STT_FUNC)
+ && (ctf_dynhash_lookup (fp->ctf_objthash, sym_name)))
+ continue;
+
+ if ((this_link_sym->st_type == STT_OBJECT)
+ && (ctf_dynhash_lookup (fp->ctf_funchash, sym_name)))
+ continue;
+ }
+ else
+ sym_name = nameidx[i];
+
+ /* Symbol in index but no type set? Silently skip and (optionally)
+ pad. (In force-indexed mode, this is also where we track symbols of
+ the wrong type for this round of insertion.) */
+ if ((type = ctf_dynhash_lookup (symhash, sym_name)) == NULL)
+ {
+ if (flags & CTF_SYMTYPETAB_EMIT_PAD)
+ *dpp++ = 0;
+ continue;
+ }
+
+ if (!ctf_assert (fp, (((char *) dpp) - (char *) dp) < size))
+ return -1; /* errno is set for us. */
+
+ *dpp++ = (ctf_id_t) (uintptr_t) type;
+
+ /* When emitting unindexed output, all later symbols are pads: stop
+ early. */
+ if ((flags & CTF_SYMTYPETAB_EMIT_PAD) && idx[i]->st_symidx == outmax)
+ break;
+ }
+
+ return 0;
+}
+
+/* Emit an objt or func symtypetab index into DP in a paticular order defined by
+ an array of symbol names passed in. Stop at NIDX. The linker-reported set
+ of symbols (if any) is found in SYMFP. */
+static int
+emit_symtypetab_index (ctf_dict_t *fp, ctf_dict_t *symfp, uint32_t *dp,
+ const char **idx, uint32_t nidx, int size, int flags)
+{
+ uint32_t i;
+ uint32_t *dpp = dp;
+ ctf_dynhash_t *symhash;
+
+ ctf_dprintf ("Emitting index of size %i, %u entries reported by linker, "
+ "flags %i\n", size, nidx, flags);
+
+ /* Empty table? Nothing to do. */
+ if (size == 0)
+ return 0;
+
+ if (flags & CTF_SYMTYPETAB_EMIT_FUNCTION)
+ symhash = fp->ctf_funchash;
+ else
+ symhash = fp->ctf_objthash;
+
+ /* Indexes should always be unpadded. */
+ if (!ctf_assert (fp, !(flags & CTF_SYMTYPETAB_EMIT_PAD)))
+ return -1; /* errno is set for us. */
+
+ for (i = 0; i < nidx; i++)
+ {
+ const char *sym_name;
+ void *type;
+
+ if (!(flags & CTF_SYMTYPETAB_FORCE_INDEXED))
+ {
+ ctf_link_sym_t *this_link_sym;
+
+ this_link_sym = ctf_dynhash_lookup (symfp->ctf_dynsyms, idx[i]);
+
+ /* This is an index: unreported symbols should never appear in it. */
+ if (!ctf_assert (fp, this_link_sym != NULL))
+ return -1; /* errno is set for us. */
+
+ /* Symbol of the wrong type, or skippable? This symbol is not in this
+ table. */
+ if (((flags & CTF_SYMTYPETAB_EMIT_FUNCTION)
+ && this_link_sym->st_type != STT_FUNC)
+ || (!(flags & CTF_SYMTYPETAB_EMIT_FUNCTION)
+ && this_link_sym->st_type != STT_OBJECT))
+ continue;
+
+ if (ctf_symtab_skippable (this_link_sym))
+ continue;
+
+ sym_name = this_link_sym->st_name;
+
+ /* Linker reports symbol of a different type to the symbol we actually
+ added? Skip the symbol. */
+ if ((this_link_sym->st_type == STT_FUNC)
+ && (ctf_dynhash_lookup (fp->ctf_objthash, sym_name)))
+ continue;
+
+ if ((this_link_sym->st_type == STT_OBJECT)
+ && (ctf_dynhash_lookup (fp->ctf_funchash, sym_name)))
+ continue;
+ }
+ else
+ sym_name = idx[i];
+
+ /* Symbol in index and reported by linker, but no type set? Silently skip
+ and (optionally) pad. (In force-indexed mode, this is also where we
+ track symbols of the wrong type for this round of insertion.) */
+ if ((type = ctf_dynhash_lookup (symhash, sym_name)) == NULL)
+ continue;
+
+ ctf_str_add_ref (fp, sym_name, dpp++);
+
+ if (!ctf_assert (fp, (((char *) dpp) - (char *) dp) <= size))
+ return -1; /* errno is set for us. */
+ }
+
+ return 0;
+}
+
+static unsigned char *
+ctf_copy_smembers (ctf_dict_t *fp, ctf_dtdef_t *dtd, unsigned char *t)
+{
+ ctf_dmdef_t *dmd = ctf_list_next (&dtd->dtd_u.dtu_members);
+ ctf_member_t ctm;
+
+ for (; dmd != NULL; dmd = ctf_list_next (dmd))
+ {
+ ctf_member_t *copied;
+
+ ctm.ctm_name = 0;
+ ctm.ctm_type = (uint32_t) dmd->dmd_type;
+ ctm.ctm_offset = (uint32_t) dmd->dmd_offset;
+
+ memcpy (t, &ctm, sizeof (ctm));
+ copied = (ctf_member_t *) t;
+ if (dmd->dmd_name)
+ ctf_str_add_ref (fp, dmd->dmd_name, &copied->ctm_name);
+
+ t += sizeof (ctm);
+ }
+
+ return t;
+}
+
+static unsigned char *
+ctf_copy_lmembers (ctf_dict_t *fp, ctf_dtdef_t *dtd, unsigned char *t)
+{
+ ctf_dmdef_t *dmd = ctf_list_next (&dtd->dtd_u.dtu_members);
+ ctf_lmember_t ctlm;
+
+ for (; dmd != NULL; dmd = ctf_list_next (dmd))
+ {
+ ctf_lmember_t *copied;
+
+ ctlm.ctlm_name = 0;
+ ctlm.ctlm_type = (uint32_t) dmd->dmd_type;
+ ctlm.ctlm_offsethi = CTF_OFFSET_TO_LMEMHI (dmd->dmd_offset);
+ ctlm.ctlm_offsetlo = CTF_OFFSET_TO_LMEMLO (dmd->dmd_offset);
+
+ memcpy (t, &ctlm, sizeof (ctlm));
+ copied = (ctf_lmember_t *) t;
+ if (dmd->dmd_name)
+ ctf_str_add_ref (fp, dmd->dmd_name, &copied->ctlm_name);
+
+ t += sizeof (ctlm);
+ }
+
+ return t;
+}
+
+static unsigned char *
+ctf_copy_emembers (ctf_dict_t *fp, ctf_dtdef_t *dtd, unsigned char *t)
+{
+ ctf_dmdef_t *dmd = ctf_list_next (&dtd->dtd_u.dtu_members);
+ ctf_enum_t cte;
+
+ for (; dmd != NULL; dmd = ctf_list_next (dmd))
+ {
+ ctf_enum_t *copied;
+
+ cte.cte_value = dmd->dmd_value;
+ memcpy (t, &cte, sizeof (cte));
+ copied = (ctf_enum_t *) t;
+ ctf_str_add_ref (fp, dmd->dmd_name, &copied->cte_name);
+ t += sizeof (cte);
+ }
+
+ return t;
+}
+
+/* Sort a newly-constructed static variable array. */
+
+typedef struct ctf_sort_var_arg_cb
+{
+ ctf_dict_t *fp;
+ ctf_strs_t *strtab;
+} ctf_sort_var_arg_cb_t;
+
+static int
+ctf_sort_var (const void *one_, const void *two_, void *arg_)
+{
+ const ctf_varent_t *one = one_;
+ const ctf_varent_t *two = two_;
+ ctf_sort_var_arg_cb_t *arg = arg_;
+
+ return (strcmp (ctf_strraw_explicit (arg->fp, one->ctv_name, arg->strtab),
+ ctf_strraw_explicit (arg->fp, two->ctv_name, arg->strtab)));
+}
+
+/* If the specified CTF dict is writable and has been modified, reload this dict
+ with the updated type definitions, ready for serialization. In order to make
+ this code and the rest of libctf as simple as possible, we perform updates by
+ taking the dynamic type definitions and creating an in-memory CTF dict
+ containing the definitions, and then call ctf_simple_open_internal() on it.
+ We perform one extra trick here for the benefit of callers and to keep our
+ code simple: ctf_simple_open_internal() will return a new ctf_dict_t, but we
+ want to keep the fp constant for the caller, so after
+ ctf_simple_open_internal() returns, we use memcpy to swap the interior of the
+ old and new ctf_dict_t's, and then free the old. */
+int
+ctf_serialize (ctf_dict_t *fp)
+{
+ ctf_dict_t ofp, *nfp;
+ ctf_header_t hdr, *hdrp;
+ ctf_dtdef_t *dtd;
+ ctf_dvdef_t *dvd;
+ ctf_varent_t *dvarents;
+ ctf_strs_writable_t strtab;
+
+ unsigned char *t;
+ unsigned long i;
+ size_t buf_size, type_size, objt_size, func_size;
+ size_t objt_unpadsize, func_unpadsize, objt_padsize, func_padsize;
+ size_t funcidx_size, objtidx_size;
+ size_t nvars, nfuncs, nobjts, maxobjt, maxfunc;
+ size_t nsymtypes = 0;
+ const char **sym_name_order = NULL;
+ unsigned char *buf = NULL, *newbuf;
+ int err;
+
+ /* Symtab filtering. If filter_syms is true, symfp is set: otherwise,
+ CTF_SYMTYPETAB_FORCE_INDEXED is set in symflags. */
+ int filter_syms = 0;
+ int sort_syms = 1;
+ int symflags = 0;
+ ctf_dict_t *symfp = NULL;
+
+ if (!(fp->ctf_flags & LCTF_RDWR))
+ return (ctf_set_errno (fp, ECTF_RDONLY));
+
+ /* Update required? */
+ if (!(fp->ctf_flags & LCTF_DIRTY))
+ return 0;
+
+ /* If doing a writeout as part of linking, and the link flags request it,
+ filter out reported symbols from the variable section, and filter out all
+ other symbols from the symtypetab sections. (If we are not linking, the
+ symbols are sorted; if we are linking, don't bother sorting if we are not
+ filtering out reported symbols: this is almost certaily an ld -r and only
+ the linker is likely to consume these symtypetabs again. The linker
+ doesn't care what order the symtypetab entries is in, since it only
+ iterates over symbols and does not use the ctf_lookup_by_symbol* API.) */
+
+ if (fp->ctf_flags & LCTF_LINKING)
+ {
+ filter_syms = !(fp->ctf_link_flags & CTF_LINK_NO_FILTER_REPORTED_SYMS);
+ if (!filter_syms)
+ sort_syms = 0;
+ }
+
+ /* Fill in an initial CTF header. We will leave the label, object,
+ and function sections empty and only output a header, type section,
+ and string table. The type section begins at a 4-byte aligned
+ boundary past the CTF header itself (at relative offset zero). The flag
+ indicating a new-style function info section (an array of CTF_K_FUNCTION
+ type IDs in the types section) is flipped on. */
+
+ memset (&hdr, 0, sizeof (hdr));
+ hdr.cth_magic = CTF_MAGIC;
+ hdr.cth_version = CTF_VERSION;
+
+ /* This is a new-format func info section, and the symtab and strtab come out
+ of the dynsym and dynstr these days. */
+ hdr.cth_flags = (CTF_F_NEWFUNCINFO | CTF_F_DYNSTR);
+
+ /* Iterate through the dynamic type definition list and compute the
+ size of the CTF type section we will need to generate. */
+
+ for (type_size = 0, dtd = ctf_list_next (&fp->ctf_dtdefs);
+ dtd != NULL; dtd = ctf_list_next (dtd))
+ {
+ uint32_t kind = LCTF_INFO_KIND (fp, dtd->dtd_data.ctt_info);
+ uint32_t vlen = LCTF_INFO_VLEN (fp, dtd->dtd_data.ctt_info);
+
+ if (dtd->dtd_data.ctt_size != CTF_LSIZE_SENT)
+ type_size += sizeof (ctf_stype_t);
+ else
+ type_size += sizeof (ctf_type_t);
+
+ switch (kind)
+ {
+ case CTF_K_INTEGER:
+ case CTF_K_FLOAT:
+ type_size += sizeof (uint32_t);
+ break;
+ case CTF_K_ARRAY:
+ type_size += sizeof (ctf_array_t);
+ break;
+ case CTF_K_SLICE:
+ type_size += sizeof (ctf_slice_t);
+ break;
+ case CTF_K_FUNCTION:
+ type_size += sizeof (uint32_t) * (vlen + (vlen & 1));
+ break;
+ case CTF_K_STRUCT:
+ case CTF_K_UNION:
+ if (dtd->dtd_data.ctt_size < CTF_LSTRUCT_THRESH)
+ type_size += sizeof (ctf_member_t) * vlen;
+ else
+ type_size += sizeof (ctf_lmember_t) * vlen;
+ break;
+ case CTF_K_ENUM:
+ type_size += sizeof (ctf_enum_t) * vlen;
+ break;
+ }
+ }
+
+ /* Find the dict to which the linker has reported symbols, if any. */
+
+ if (filter_syms)
+ {
+ if (!fp->ctf_dynsyms && fp->ctf_parent && fp->ctf_parent->ctf_dynsyms)
+ symfp = fp->ctf_parent;
+ else
+ symfp = fp;
+ }
+
+ /* If not filtering, keep all potential symbols in an unsorted, indexed
+ dict. */
+ if (!filter_syms)
+ symflags = CTF_SYMTYPETAB_FORCE_INDEXED;
+ else
+ hdr.cth_flags |= CTF_F_IDXSORTED;
+
+ if (!ctf_assert (fp, (filter_syms && symfp)
+ || (!filter_syms && !symfp
+ && ((symflags & CTF_SYMTYPETAB_FORCE_INDEXED) != 0))))
+ return -1;
+
+ /* Work out the sizes of the object and function sections, and work out the
+ number of pad (unassigned) symbols in each, and the overall size of the
+ sections. */
+
+ if (symtypetab_density (fp, symfp, fp->ctf_objthash, &nobjts, &maxobjt,
+ &objt_unpadsize, &objt_padsize, &objtidx_size,
+ symflags) < 0)
+ return -1; /* errno is set for us. */
+
+ ctf_dprintf ("Object symtypetab: %i objects, max %i, unpadded size %i, "
+ "%i bytes of pads, index size %i\n", (int) nobjts, (int) maxobjt,
+ (int) objt_unpadsize, (int) objt_padsize, (int) objtidx_size);
+
+ if (symtypetab_density (fp, symfp, fp->ctf_funchash, &nfuncs, &maxfunc,
+ &func_unpadsize, &func_padsize, &funcidx_size,
+ symflags | CTF_SYMTYPETAB_EMIT_FUNCTION) < 0)
+ return -1; /* errno is set for us. */
+
+ ctf_dprintf ("Function symtypetab: %i functions, max %i, unpadded size %i, "
+ "%i bytes of pads, index size %i\n", (int) nfuncs, (int) maxfunc,
+ (int) func_unpadsize, (int) func_padsize, (int) funcidx_size);
+
+ /* If we are filtering symbols out, those symbols that the linker has not
+ reported have now been removed from the ctf_objthash and ctf_funchash.
+ Delete entries from the variable section that duplicate newly-added data
+ symbols. There's no need to migrate new ones in, because the compiler
+ always emits both a variable and a data symbol simultaneously, and
+ filtering only happens at final link time. */
+
+ if (filter_syms && symfp->ctf_dynsyms &&
+ symtypetab_delete_nonstatic_vars (fp, symfp) < 0)
+ return -1;
+
+ /* It is worth indexing each section if it would save space to do so, due to
+ reducing the number of pads sufficiently. A pad is the same size as a
+ single index entry: but index sections compress relatively poorly compared
+ to constant pads, so it takes a lot of contiguous padding to equal one
+ index section entry. It would be nice to be able to *verify* whether we
+ would save space after compression rather than guessing, but this seems
+ difficult, since it would require complete reserialization. Regardless, if
+ the linker has not reported any symbols (e.g. if this is not a final link
+ but just an ld -r), we must emit things in indexed fashion just as the
+ compiler does. */
+
+ objt_size = objt_unpadsize;
+ if (!(symflags & CTF_SYMTYPETAB_FORCE_INDEXED)
+ && ((objt_padsize + objt_unpadsize) * CTF_INDEX_PAD_THRESHOLD
+ > objt_padsize))
+ {
+ objt_size += objt_padsize;
+ objtidx_size = 0;
+ }
+
+ func_size = func_unpadsize;
+ if (!(symflags & CTF_SYMTYPETAB_FORCE_INDEXED)
+ && ((func_padsize + func_unpadsize) * CTF_INDEX_PAD_THRESHOLD
+ > func_padsize))
+ {
+ func_size += func_padsize;
+ funcidx_size = 0;
+ }
+
+ /* Computing the number of entries in the CTF variable section is much
+ simpler. */
+
+ for (nvars = 0, dvd = ctf_list_next (&fp->ctf_dvdefs);
+ dvd != NULL; dvd = ctf_list_next (dvd), nvars++);
+
+ /* Compute the size of the CTF buffer we need, sans only the string table,
+ then allocate a new buffer and memcpy the finished header to the start of
+ the buffer. (We will adjust this later with strtab length info.) */
+
+ hdr.cth_lbloff = hdr.cth_objtoff = 0;
+ hdr.cth_funcoff = hdr.cth_objtoff + objt_size;
+ hdr.cth_objtidxoff = hdr.cth_funcoff + func_size;
+ hdr.cth_funcidxoff = hdr.cth_objtidxoff + objtidx_size;
+ hdr.cth_varoff = hdr.cth_funcidxoff + funcidx_size;
+ hdr.cth_typeoff = hdr.cth_varoff + (nvars * sizeof (ctf_varent_t));
+ hdr.cth_stroff = hdr.cth_typeoff + type_size;
+ hdr.cth_strlen = 0;
+
+ buf_size = sizeof (ctf_header_t) + hdr.cth_stroff + hdr.cth_strlen;
+
+ if ((buf = malloc (buf_size)) == NULL)
+ return (ctf_set_errno (fp, EAGAIN));
+
+ memcpy (buf, &hdr, sizeof (ctf_header_t));
+ t = (unsigned char *) buf + sizeof (ctf_header_t) + hdr.cth_objtoff;
+
+ hdrp = (ctf_header_t *) buf;
+ if ((fp->ctf_flags & LCTF_CHILD) && (fp->ctf_parname != NULL))
+ ctf_str_add_ref (fp, fp->ctf_parname, &hdrp->cth_parname);
+ if (fp->ctf_cuname != NULL)
+ ctf_str_add_ref (fp, fp->ctf_cuname, &hdrp->cth_cuname);
+
+ /* Sort the linker's symbols into name order if need be. */
+
+ if ((objtidx_size != 0) || (funcidx_size != 0))
+ {
+ ctf_next_t *i = NULL;
+ void *symname;
+ const char **walk;
+
+ if (filter_syms)
+ {
+ if (symfp->ctf_dynsyms)
+ nsymtypes = ctf_dynhash_elements (symfp->ctf_dynsyms);
+ else
+ nsymtypes = 0;
+ }
+ else
+ nsymtypes = ctf_dynhash_elements (fp->ctf_objthash)
+ + ctf_dynhash_elements (fp->ctf_funchash);
+
+ if ((sym_name_order = calloc (nsymtypes, sizeof (const char *))) == NULL)
+ goto oom;
+
+ walk = sym_name_order;
+
+ if (filter_syms)
+ {
+ if (symfp->ctf_dynsyms)
+ {
+ while ((err = ctf_dynhash_next_sorted (symfp->ctf_dynsyms, &i,
+ &symname, NULL,
+ ctf_dynhash_sort_by_name,
+ NULL)) == 0)
+ *walk++ = (const char *) symname;
+ if (err != ECTF_NEXT_END)
+ goto symerr;
+ }
+ }
+ else
+ {
+ ctf_hash_sort_f sort_fun = NULL;
+
+ /* Since we partition the set of symbols back into objt and func,
+ we can sort the two independently without harm. */
+ if (sort_syms)
+ sort_fun = ctf_dynhash_sort_by_name;
+
+ while ((err = ctf_dynhash_next_sorted (fp->ctf_objthash, &i, &symname,
+ NULL, sort_fun, NULL)) == 0)
+ *walk++ = (const char *) symname;
+ if (err != ECTF_NEXT_END)
+ goto symerr;
+
+ while ((err = ctf_dynhash_next_sorted (fp->ctf_funchash, &i, &symname,
+ NULL, sort_fun, NULL)) == 0)
+ *walk++ = (const char *) symname;
+ if (err != ECTF_NEXT_END)
+ goto symerr;
+ }
+ }
+
+ /* Emit the object and function sections, and if necessary their indexes.
+ Emission is done in symtab order if there is no index, and in index
+ (name) order otherwise. */
+
+ if ((objtidx_size == 0) && symfp && symfp->ctf_dynsymidx)
+ {
+ ctf_dprintf ("Emitting unindexed objt symtypetab\n");
+ if (emit_symtypetab (fp, symfp, (uint32_t *) t, symfp->ctf_dynsymidx,
+ NULL, symfp->ctf_dynsymmax + 1, maxobjt, objt_size,
+ symflags | CTF_SYMTYPETAB_EMIT_PAD) < 0)
+ goto err; /* errno is set for us. */
+ }
+ else
+ {
+ ctf_dprintf ("Emitting indexed objt symtypetab\n");
+ if (emit_symtypetab (fp, symfp, (uint32_t *) t, NULL, sym_name_order,
+ nsymtypes, maxobjt, objt_size, symflags) < 0)
+ goto err; /* errno is set for us. */
+ }
+
+ t += objt_size;
+
+ if ((funcidx_size == 0) && symfp && symfp->ctf_dynsymidx)
+ {
+ ctf_dprintf ("Emitting unindexed func symtypetab\n");
+ if (emit_symtypetab (fp, symfp, (uint32_t *) t, symfp->ctf_dynsymidx,
+ NULL, symfp->ctf_dynsymmax + 1, maxfunc,
+ func_size, symflags | CTF_SYMTYPETAB_EMIT_FUNCTION
+ | CTF_SYMTYPETAB_EMIT_PAD) < 0)
+ goto err; /* errno is set for us. */
+ }
+ else
+ {
+ ctf_dprintf ("Emitting indexed func symtypetab\n");
+ if (emit_symtypetab (fp, symfp, (uint32_t *) t, NULL, sym_name_order,
+ nsymtypes, maxfunc, func_size,
+ symflags | CTF_SYMTYPETAB_EMIT_FUNCTION) < 0)
+ goto err; /* errno is set for us. */
+ }
+
+ t += func_size;
+
+ if (objtidx_size > 0)
+ if (emit_symtypetab_index (fp, symfp, (uint32_t *) t, sym_name_order,
+ nsymtypes, objtidx_size, symflags) < 0)
+ goto err;
+
+ t += objtidx_size;
+
+ if (funcidx_size > 0)
+ if (emit_symtypetab_index (fp, symfp, (uint32_t *) t, sym_name_order,
+ nsymtypes, funcidx_size,
+ symflags | CTF_SYMTYPETAB_EMIT_FUNCTION) < 0)
+ goto err;
+
+ t += funcidx_size;
+ free (sym_name_order);
+ sym_name_order = NULL;
+
+ /* Work over the variable list, translating everything into ctf_varent_t's and
+ prepping the string table. */
+
+ dvarents = (ctf_varent_t *) t;
+ for (i = 0, dvd = ctf_list_next (&fp->ctf_dvdefs); dvd != NULL;
+ dvd = ctf_list_next (dvd), i++)
+ {
+ ctf_varent_t *var = &dvarents[i];
+
+ ctf_str_add_ref (fp, dvd->dvd_name, &var->ctv_name);
+ var->ctv_type = (uint32_t) dvd->dvd_type;
+ }
+ assert (i == nvars);
+
+ t += sizeof (ctf_varent_t) * nvars;
+
+ assert (t == (unsigned char *) buf + sizeof (ctf_header_t) + hdr.cth_typeoff);
+
+ /* We now take a final lap through the dynamic type definition list and copy
+ the appropriate type records to the output buffer, noting down the
+ strings as we go. */
+
+ for (dtd = ctf_list_next (&fp->ctf_dtdefs);
+ dtd != NULL; dtd = ctf_list_next (dtd))
+ {
+ uint32_t kind = LCTF_INFO_KIND (fp, dtd->dtd_data.ctt_info);
+ uint32_t vlen = LCTF_INFO_VLEN (fp, dtd->dtd_data.ctt_info);
+
+ ctf_array_t cta;
+ uint32_t encoding;
+ size_t len;
+ ctf_stype_t *copied;
+ const char *name;
+
+ if (dtd->dtd_data.ctt_size != CTF_LSIZE_SENT)
+ len = sizeof (ctf_stype_t);
+ else
+ len = sizeof (ctf_type_t);
+
+ memcpy (t, &dtd->dtd_data, len);
+ copied = (ctf_stype_t *) t; /* name is at the start: constant offset. */
+ if (copied->ctt_name
+ && (name = ctf_strraw (fp, copied->ctt_name)) != NULL)
+ ctf_str_add_ref (fp, name, &copied->ctt_name);
+ t += len;
+
+ switch (kind)
+ {
+ case CTF_K_INTEGER:
+ case CTF_K_FLOAT:
+ if (kind == CTF_K_INTEGER)
+ {
+ encoding = CTF_INT_DATA (dtd->dtd_u.dtu_enc.cte_format,
+ dtd->dtd_u.dtu_enc.cte_offset,
+ dtd->dtd_u.dtu_enc.cte_bits);
+ }
+ else
+ {
+ encoding = CTF_FP_DATA (dtd->dtd_u.dtu_enc.cte_format,
+ dtd->dtd_u.dtu_enc.cte_offset,
+ dtd->dtd_u.dtu_enc.cte_bits);
+ }
+ memcpy (t, &encoding, sizeof (encoding));
+ t += sizeof (encoding);
+ break;
+
+ case CTF_K_SLICE:
+ memcpy (t, &dtd->dtd_u.dtu_slice, sizeof (struct ctf_slice));
+ t += sizeof (struct ctf_slice);
+ break;
+
+ case CTF_K_ARRAY:
+ cta.cta_contents = (uint32_t) dtd->dtd_u.dtu_arr.ctr_contents;
+ cta.cta_index = (uint32_t) dtd->dtd_u.dtu_arr.ctr_index;
+ cta.cta_nelems = dtd->dtd_u.dtu_arr.ctr_nelems;
+ memcpy (t, &cta, sizeof (cta));
+ t += sizeof (cta);
+ break;
+
+ case CTF_K_FUNCTION:
+ {
+ uint32_t *argv = (uint32_t *) (uintptr_t) t;
+ uint32_t argc;
+
+ for (argc = 0; argc < vlen; argc++)
+ *argv++ = dtd->dtd_u.dtu_argv[argc];
+
+ if (vlen & 1)
+ *argv++ = 0; /* Pad to 4-byte boundary. */
+
+ t = (unsigned char *) argv;
+ break;
+ }
+
+ case CTF_K_STRUCT:
+ case CTF_K_UNION:
+ if (dtd->dtd_data.ctt_size < CTF_LSTRUCT_THRESH)
+ t = ctf_copy_smembers (fp, dtd, t);
+ else
+ t = ctf_copy_lmembers (fp, dtd, t);
+ break;
+
+ case CTF_K_ENUM:
+ t = ctf_copy_emembers (fp, dtd, t);
+ break;
+ }
+ }
+ assert (t == (unsigned char *) buf + sizeof (ctf_header_t) + hdr.cth_stroff);
+
+ /* Construct the final string table and fill out all the string refs with the
+ final offsets. Then purge the refs list, because we're about to move this
+ strtab onto the end of the buf, invalidating all the offsets. */
+ strtab = ctf_str_write_strtab (fp);
+ ctf_str_purge_refs (fp);
+
+ if (strtab.cts_strs == NULL)
+ goto oom;
+
+ /* Now the string table is constructed, we can sort the buffer of
+ ctf_varent_t's. */
+ ctf_sort_var_arg_cb_t sort_var_arg = { fp, (ctf_strs_t *) &strtab };
+ ctf_qsort_r (dvarents, nvars, sizeof (ctf_varent_t), ctf_sort_var,
+ &sort_var_arg);
+
+ if ((newbuf = ctf_realloc (fp, buf, buf_size + strtab.cts_len)) == NULL)
+ {
+ free (strtab.cts_strs);
+ goto oom;
+ }
+ buf = newbuf;
+ memcpy (buf + buf_size, strtab.cts_strs, strtab.cts_len);
+ hdrp = (ctf_header_t *) buf;
+ hdrp->cth_strlen = strtab.cts_len;
+ buf_size += hdrp->cth_strlen;
+ free (strtab.cts_strs);
+
+ /* Finally, we are ready to ctf_simple_open() the new dict. If this is
+ successful, we then switch nfp and fp and free the old dict. */
+
+ if ((nfp = ctf_simple_open_internal ((char *) buf, buf_size, NULL, 0,
+ 0, NULL, 0, fp->ctf_syn_ext_strtab,
+ 1, &err)) == NULL)
+ {
+ free (buf);
+ return (ctf_set_errno (fp, err));
+ }
+
+ (void) ctf_setmodel (nfp, ctf_getmodel (fp));
+
+ nfp->ctf_parent = fp->ctf_parent;
+ nfp->ctf_parent_unreffed = fp->ctf_parent_unreffed;
+ nfp->ctf_refcnt = fp->ctf_refcnt;
+ nfp->ctf_flags |= fp->ctf_flags & ~LCTF_DIRTY;
+ if (nfp->ctf_dynbase == NULL)
+ nfp->ctf_dynbase = buf; /* Make sure buf is freed on close. */
+ nfp->ctf_dthash = fp->ctf_dthash;
+ nfp->ctf_dtdefs = fp->ctf_dtdefs;
+ nfp->ctf_dvhash = fp->ctf_dvhash;
+ nfp->ctf_dvdefs = fp->ctf_dvdefs;
+ nfp->ctf_dtoldid = fp->ctf_dtoldid;
+ nfp->ctf_add_processing = fp->ctf_add_processing;
+ nfp->ctf_snapshots = fp->ctf_snapshots + 1;
+ nfp->ctf_specific = fp->ctf_specific;
+ nfp->ctf_nfuncidx = fp->ctf_nfuncidx;
+ nfp->ctf_nobjtidx = fp->ctf_nobjtidx;
+ nfp->ctf_objthash = fp->ctf_objthash;
+ nfp->ctf_funchash = fp->ctf_funchash;
+ nfp->ctf_dynsyms = fp->ctf_dynsyms;
+ nfp->ctf_ptrtab = fp->ctf_ptrtab;
+ nfp->ctf_pptrtab = fp->ctf_pptrtab;
+ nfp->ctf_dynsymidx = fp->ctf_dynsymidx;
+ nfp->ctf_dynsymmax = fp->ctf_dynsymmax;
+ nfp->ctf_ptrtab_len = fp->ctf_ptrtab_len;
+ nfp->ctf_pptrtab_len = fp->ctf_pptrtab_len;
+ nfp->ctf_link_inputs = fp->ctf_link_inputs;
+ nfp->ctf_link_outputs = fp->ctf_link_outputs;
+ nfp->ctf_errs_warnings = fp->ctf_errs_warnings;
+ nfp->ctf_funcidx_names = fp->ctf_funcidx_names;
+ nfp->ctf_objtidx_names = fp->ctf_objtidx_names;
+ nfp->ctf_funcidx_sxlate = fp->ctf_funcidx_sxlate;
+ nfp->ctf_objtidx_sxlate = fp->ctf_objtidx_sxlate;
+ nfp->ctf_str_prov_offset = fp->ctf_str_prov_offset;
+ nfp->ctf_syn_ext_strtab = fp->ctf_syn_ext_strtab;
+ nfp->ctf_pptrtab_typemax = fp->ctf_pptrtab_typemax;
+ nfp->ctf_in_flight_dynsyms = fp->ctf_in_flight_dynsyms;
+ nfp->ctf_link_in_cu_mapping = fp->ctf_link_in_cu_mapping;
+ nfp->ctf_link_out_cu_mapping = fp->ctf_link_out_cu_mapping;
+ nfp->ctf_link_type_mapping = fp->ctf_link_type_mapping;
+ nfp->ctf_link_memb_name_changer = fp->ctf_link_memb_name_changer;
+ nfp->ctf_link_memb_name_changer_arg = fp->ctf_link_memb_name_changer_arg;
+ nfp->ctf_link_variable_filter = fp->ctf_link_variable_filter;
+ nfp->ctf_link_variable_filter_arg = fp->ctf_link_variable_filter_arg;
+ nfp->ctf_symsect_little_endian = fp->ctf_symsect_little_endian;
+ nfp->ctf_link_flags = fp->ctf_link_flags;
+ nfp->ctf_dedup_atoms = fp->ctf_dedup_atoms;
+ nfp->ctf_dedup_atoms_alloc = fp->ctf_dedup_atoms_alloc;
+ memcpy (&nfp->ctf_dedup, &fp->ctf_dedup, sizeof (fp->ctf_dedup));
+
+ nfp->ctf_snapshot_lu = fp->ctf_snapshots;
+
+ memcpy (&nfp->ctf_lookups, fp->ctf_lookups, sizeof (fp->ctf_lookups));
+ nfp->ctf_structs = fp->ctf_structs;
+ nfp->ctf_unions = fp->ctf_unions;
+ nfp->ctf_enums = fp->ctf_enums;
+ nfp->ctf_names = fp->ctf_names;
+
+ fp->ctf_dthash = NULL;
+ ctf_str_free_atoms (nfp);
+ nfp->ctf_str_atoms = fp->ctf_str_atoms;
+ nfp->ctf_prov_strtab = fp->ctf_prov_strtab;
+ fp->ctf_str_atoms = NULL;
+ fp->ctf_prov_strtab = NULL;
+ memset (&fp->ctf_dtdefs, 0, sizeof (ctf_list_t));
+ memset (&fp->ctf_errs_warnings, 0, sizeof (ctf_list_t));
+ fp->ctf_add_processing = NULL;
+ fp->ctf_ptrtab = NULL;
+ fp->ctf_pptrtab = NULL;
+ fp->ctf_funcidx_names = NULL;
+ fp->ctf_objtidx_names = NULL;
+ fp->ctf_funcidx_sxlate = NULL;
+ fp->ctf_objtidx_sxlate = NULL;
+ fp->ctf_objthash = NULL;
+ fp->ctf_funchash = NULL;
+ fp->ctf_dynsyms = NULL;
+ fp->ctf_dynsymidx = NULL;
+ fp->ctf_link_inputs = NULL;
+ fp->ctf_link_outputs = NULL;
+ fp->ctf_syn_ext_strtab = NULL;
+ fp->ctf_link_in_cu_mapping = NULL;
+ fp->ctf_link_out_cu_mapping = NULL;
+ fp->ctf_link_type_mapping = NULL;
+ fp->ctf_dedup_atoms = NULL;
+ fp->ctf_dedup_atoms_alloc = NULL;
+ fp->ctf_parent_unreffed = 1;
+
+ fp->ctf_dvhash = NULL;
+ memset (&fp->ctf_dvdefs, 0, sizeof (ctf_list_t));
+ memset (fp->ctf_lookups, 0, sizeof (fp->ctf_lookups));
+ memset (&fp->ctf_in_flight_dynsyms, 0, sizeof (fp->ctf_in_flight_dynsyms));
+ memset (&fp->ctf_dedup, 0, sizeof (fp->ctf_dedup));
+ fp->ctf_structs.ctn_writable = NULL;
+ fp->ctf_unions.ctn_writable = NULL;
+ fp->ctf_enums.ctn_writable = NULL;
+ fp->ctf_names.ctn_writable = NULL;
+
+ memcpy (&ofp, fp, sizeof (ctf_dict_t));
+ memcpy (fp, nfp, sizeof (ctf_dict_t));
+ memcpy (nfp, &ofp, sizeof (ctf_dict_t));
+
+ nfp->ctf_refcnt = 1; /* Force nfp to be freed. */
+ ctf_dict_close (nfp);
+
+ return 0;
+
+symerr:
+ ctf_err_warn (fp, 0, err, _("error serializing symtypetabs"));
+ goto err;
+oom:
+ free (buf);
+ free (sym_name_order);
+ return (ctf_set_errno (fp, EAGAIN));
+err:
+ free (buf);
+ free (sym_name_order);
+ return -1; /* errno is set for us. */
+}
+
+
+/* Write the compressed CTF data stream to the specified gzFile descriptor. */
+int
+ctf_gzwrite (ctf_dict_t *fp, gzFile fd)
+{
+ const unsigned char *buf;
+ ssize_t resid;
+ ssize_t len;
+
+ resid = sizeof (ctf_header_t);
+ buf = (unsigned char *) fp->ctf_header;
+ while (resid != 0)
+ {
+ if ((len = gzwrite (fd, buf, resid)) <= 0)
+ return (ctf_set_errno (fp, errno));
+ resid -= len;
+ buf += len;
+ }
+
+ resid = fp->ctf_size;
+ buf = fp->ctf_buf;
+ while (resid != 0)
+ {
+ if ((len = gzwrite (fd, buf, resid)) <= 0)
+ return (ctf_set_errno (fp, errno));
+ resid -= len;
+ buf += len;
+ }
+
+ return 0;
+}
+
+/* Compress the specified CTF data stream and write it to the specified file
+ descriptor. */
+int
+ctf_compress_write (ctf_dict_t *fp, int fd)
+{
+ unsigned char *buf;
+ unsigned char *bp;
+ ctf_header_t h;
+ ctf_header_t *hp = &h;
+ ssize_t header_len = sizeof (ctf_header_t);
+ ssize_t compress_len;
+ ssize_t len;
+ int rc;
+ int err = 0;
+
+ if (ctf_serialize (fp) < 0)
+ return -1; /* errno is set for us. */
+
+ memcpy (hp, fp->ctf_header, header_len);
+ hp->cth_flags |= CTF_F_COMPRESS;
+ compress_len = compressBound (fp->ctf_size);
+
+ if ((buf = malloc (compress_len)) == NULL)
+ {
+ ctf_err_warn (fp, 0, 0, _("ctf_compress_write: cannot allocate %li bytes"),
+ (unsigned long) compress_len);
+ return (ctf_set_errno (fp, ECTF_ZALLOC));
+ }
+
+ if ((rc = compress (buf, (uLongf *) &compress_len,
+ fp->ctf_buf, fp->ctf_size)) != Z_OK)
+ {
+ err = ctf_set_errno (fp, ECTF_COMPRESS);
+ ctf_err_warn (fp, 0, 0, _("zlib deflate err: %s"), zError (rc));
+ goto ret;
+ }
+
+ while (header_len > 0)
+ {
+ if ((len = write (fd, hp, header_len)) < 0)
+ {
+ err = ctf_set_errno (fp, errno);
+ ctf_err_warn (fp, 0, 0, _("ctf_compress_write: error writing header"));
+ goto ret;
+ }
+ header_len -= len;
+ hp += len;
+ }
+
+ bp = buf;
+ while (compress_len > 0)
+ {
+ if ((len = write (fd, bp, compress_len)) < 0)
+ {
+ err = ctf_set_errno (fp, errno);
+ ctf_err_warn (fp, 0, 0, _("ctf_compress_write: error writing"));
+ goto ret;
+ }
+ compress_len -= len;
+ bp += len;
+ }
+
+ret:
+ free (buf);
+ return err;
+}
+
+/* Optionally compress the specified CTF data stream and return it as a new
+ dynamically-allocated string. */
+unsigned char *
+ctf_write_mem (ctf_dict_t *fp, size_t *size, size_t threshold)
+{
+ unsigned char *buf;
+ unsigned char *bp;
+ ctf_header_t *hp;
+ ssize_t header_len = sizeof (ctf_header_t);
+ ssize_t compress_len;
+ int rc;
+
+ if (ctf_serialize (fp) < 0)
+ return NULL; /* errno is set for us. */
+
+ compress_len = compressBound (fp->ctf_size);
+ if (fp->ctf_size < threshold)
+ compress_len = fp->ctf_size;
+ if ((buf = malloc (compress_len
+ + sizeof (struct ctf_header))) == NULL)
+ {
+ ctf_set_errno (fp, ENOMEM);
+ ctf_err_warn (fp, 0, 0, _("ctf_write_mem: cannot allocate %li bytes"),
+ (unsigned long) (compress_len + sizeof (struct ctf_header)));
+ return NULL;
+ }
+
+ hp = (ctf_header_t *) buf;
+ memcpy (hp, fp->ctf_header, header_len);
+ bp = buf + sizeof (struct ctf_header);
+ *size = sizeof (struct ctf_header);
+
+ if (fp->ctf_size < threshold)
+ {
+ hp->cth_flags &= ~CTF_F_COMPRESS;
+ memcpy (bp, fp->ctf_buf, fp->ctf_size);
+ *size += fp->ctf_size;
+ }
+ else
+ {
+ hp->cth_flags |= CTF_F_COMPRESS;
+ if ((rc = compress (bp, (uLongf *) &compress_len,
+ fp->ctf_buf, fp->ctf_size)) != Z_OK)
+ {
+ ctf_set_errno (fp, ECTF_COMPRESS);
+ ctf_err_warn (fp, 0, 0, _("zlib deflate err: %s"), zError (rc));
+ free (buf);
+ return NULL;
+ }
+ *size += compress_len;
+ }
+ return buf;
+}
+
+/* Write the uncompressed CTF data stream to the specified file descriptor. */
+int
+ctf_write (ctf_dict_t *fp, int fd)
+{
+ const unsigned char *buf;
+ ssize_t resid;
+ ssize_t len;
+
+ if (ctf_serialize (fp) < 0)
+ return -1; /* errno is set for us. */
+
+ resid = sizeof (ctf_header_t);
+ buf = (unsigned char *) fp->ctf_header;
+ while (resid != 0)
+ {
+ if ((len = write (fd, buf, resid)) <= 0)
+ {
+ ctf_err_warn (fp, 0, errno, _("ctf_write: error writing header"));
+ return (ctf_set_errno (fp, errno));
+ }
+ resid -= len;
+ buf += len;
+ }
+
+ resid = fp->ctf_size;
+ buf = fp->ctf_buf;
+ while (resid != 0)
+ {
+ if ((len = write (fd, buf, resid)) <= 0)
+ {
+ ctf_err_warn (fp, 0, errno, _("ctf_write: error writing"));
+ return (ctf_set_errno (fp, errno));
+ }
+ resid -= len;
+ buf += len;
+ }
+
+ return 0;
+}
projects / binutils-gdb.git / commitdiff