From 04dd1667401316be04feb97696399d0728b63bf6 Mon Sep 17 00:00:00 2001
From: Alan Modra <amodra@gmail.com>
Date: Tue, 3 May 2005 17:05:51 +0000
Subject: 	* section.c (bfd_section_list_remove): Don't clear s->next. 
 (bfd_section_list_append): Always init s->prev. 
 (bfd_section_list_prepend): Define. 	(bfd_section_list_insert_after): Minor
 optimization. 	(bfd_section_removed_from_list): Rewrite. 	* elf.c
 (assign_section_numbers): Simplify list traversal now that 
 bfd_section_list_remove doesn't destroy removed section next ptr. 	*
 sunos.c (sunos_add_dynamic_symbols): Likewise. 	* elfxx-ia64.c
 (elfNN_ia64_object_p): Use bfd_section_list_prepend. 	* xcofflink.c
 (_bfd_xcoff_bfd_final_link): Simplify list traversal. 	* bfd-in2.h:
 Regenerate.

---
 bfd/section.c | 33 ++++++++++++++++++++++++++-------
 1 file changed, 26 insertions(+), 7 deletions(-)

(limited to 'bfd/section.c')

diff --git a/bfd/section.c b/bfd/section.c
index 45ede06..3f008ea 100644
--- a/bfd/section.c
+++ b/bfd/section.c
@@ -552,10 +552,7 @@ CODE_FRAGMENT
 .      else						\
 .        (ABFD)->sections = _next;			\
 .      if (_next)					\
-.        {						\
-.          _next->prev = _prev;				\
-.          _s->next = NULL;				\
-.        }						\
+.        _next->prev = _prev;				\
 .      else						\
 .        (ABFD)->section_last = _prev;			\
 .    }							\
@@ -572,10 +569,32 @@ CODE_FRAGMENT
 .          _abfd->section_last->next = _s;		\
 .        }						\
 .      else						\
-.        _abfd->sections = _s;				\
+.        {						\
+.          _s->prev = NULL;				\
+.          _abfd->sections = _s;			\
+.        }						\
 .      _abfd->section_last = _s;			\
 .    }							\
 .  while (0)
+.#define bfd_section_list_prepend(ABFD, S) \
+.  do							\
+.    {							\
+.      asection *_s = S;				\
+.      bfd *_abfd = ABFD;				\
+.      _s->prev = NULL;					\
+.      if (_abfd->sections)				\
+.        {						\
+.          _s->next = _abfd->sections;			\
+.          _abfd->sections->prev = _s;			\
+.        }						\
+.      else						\
+.        {						\
+.          _s->next = NULL;				\
+.          _abfd->section_last = _s;			\
+.        }						\
+.      _abfd->sections = _s;				\
+.    }							\
+.  while (0)
 .#define bfd_section_list_insert_after(ABFD, A, S) \
 .  do							\
 .    {							\
@@ -586,7 +605,7 @@ CODE_FRAGMENT
 .      _s->prev = _a;					\
 .      _a->next = _s;					\
 .      if (_next)					\
-.        _s->next->prev = _s;				\
+.        _next->prev = _s;				\
 .      else						\
 .        (ABFD)->section_last = _s;			\
 .    }							\
@@ -607,7 +626,7 @@ CODE_FRAGMENT
 .    }							\
 .  while (0)
 .#define bfd_section_removed_from_list(ABFD, S) \
-.  ((S)->next == NULL && (S) != (ABFD)->section_last)
+.  ((S)->next == NULL ? (ABFD)->section_last != (S) : (S)->next->prev != (S))
 .
 */
 
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