From 5d89fbaa2e00a8a26e530306d76b78bf91d12ec8 Mon Sep 17 00:00:00 2001
From: Denis Vlasenko <vda.linux@googlemail.com>
Date: Tue, 22 Apr 2008 00:08:27 +0000
Subject: *: remove remaining instances of ".data" hack

---
 libbb/Kbuild           |  2 +-
 libbb/appletlib.c      |  5 -----
 libbb/lineedit.c       | 13 ++++++-------
 libbb/ptr_to_globals.c | 11 +++++++++++
 4 files changed, 18 insertions(+), 13 deletions(-)

(limited to 'libbb')

diff --git a/libbb/Kbuild b/libbb/Kbuild
index 3a68efc28..d943628aa 100644
--- a/libbb/Kbuild
+++ b/libbb/Kbuild
@@ -50,7 +50,7 @@ lib-y += inode_hash.o
 lib-y += isdirectory.o
 lib-y += kernel_version.o
 lib-y += last_char_is.o
-lib-y += lineedit.o
+lib-y += lineedit.o lineedit_ptr_hack.o
 lib-y += llist.o
 lib-y += login.o
 lib-y += make_directory.o
diff --git a/libbb/appletlib.c b/libbb/appletlib.c
index ed7d3912b..90fca8c13 100644
--- a/libbb/appletlib.c
+++ b/libbb/appletlib.c
@@ -177,11 +177,6 @@ int find_applet_by_name(const char *name)
 }
 
 
-#ifdef __GLIBC__
-/* Make it reside in R/W memory: */
-int *const bb_errno __attribute__ ((section (".data")));
-#endif
-
 void lbb_prepare(const char *applet
 		USE_FEATURE_INDIVIDUAL(, char **argv))
 				MAIN_EXTERNALLY_VISIBLE;
diff --git a/libbb/lineedit.c b/libbb/lineedit.c
index 4ba61c143..6de66ba83 100644
--- a/libbb/lineedit.c
+++ b/libbb/lineedit.c
@@ -74,7 +74,7 @@ static const char null_str[] ALIGN1 = "";
 #endif
 
 /* We try to minimize both static and stack usage. */
-struct statics {
+struct lineedit_statics {
 	line_input_t *state;
 
 	volatile unsigned cmdedit_termw; /* = 80; */ /* actual terminal width */
@@ -120,11 +120,10 @@ struct statics {
 #endif
 };
 
-/* Make it reside in writable memory, yet make compiler understand
- * that it is not going to change. */
-static struct statics *const ptr_to_statics __attribute__ ((section (".data")));
+/* See lineedit_ptr_hack.c */
+extern struct lineedit_statics *const lineedit_ptr_to_statics;
 
-#define S (*ptr_to_statics)
+#define S (*lineedit_ptr_to_statics)
 #define state            (S.state           )
 #define cmdedit_termw    (S.cmdedit_termw   )
 #define previous_SIGWINCH_handler (S.previous_SIGWINCH_handler)
@@ -145,7 +144,7 @@ static struct statics *const ptr_to_statics __attribute__ ((section (".data")));
 #define delbuf           (S.delbuf          )
 
 #define INIT_S() do { \
-	(*(struct statics**)&ptr_to_statics) = xzalloc(sizeof(S)); \
+	(*(struct lineedit_statics**)&lineedit_ptr_to_statics) = xzalloc(sizeof(S)); \
 	barrier(); \
 	cmdedit_termw = 80; \
 	USE_FEATURE_EDITING_FANCY_PROMPT(num_ok_lines = 1;) \
@@ -163,7 +162,7 @@ static void deinit_S(void)
 	if (home_pwd_buf != null_str)
 		free(home_pwd_buf);
 #endif
-	free(ptr_to_statics);
+	free(lineedit_ptr_to_statics);
 }
 #define DEINIT_S() deinit_S()
 
diff --git a/libbb/ptr_to_globals.c b/libbb/ptr_to_globals.c
index 48cf8d86c..5f30e2a64 100644
--- a/libbb/ptr_to_globals.c
+++ b/libbb/ptr_to_globals.c
@@ -5,6 +5,8 @@
  * Licensed under GPLv2, see file LICENSE in this tarball for details.
  */
 
+#include <errno.h>
+
 struct globals;
 
 #ifndef GCC_COMBINE
@@ -13,12 +15,21 @@ struct globals;
  * but here we make it live in R/W memory */
 struct globals *ptr_to_globals;
 
+#ifdef __GLIBC__
+int *bb_errno;
+#endif
+
+
 #else
 
+
 /* gcc -combine will see through and complain */
 /* Using alternative method which is more likely to break
  * on weird architectures, compilers, linkers and so on */
 struct globals *const ptr_to_globals __attribute__ ((section (".data")));
 
+#ifdef __GLIBC__
+int *const bb_errno __attribute__ ((section (".data")));
 #endif
 
+#endif
-- 
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