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authorMarkus Klotzbuecher <mk@denx.de>2008-10-21 09:18:01 +0200
committerMarkus Klotzbuecher <mk@denx.de>2008-10-21 09:18:01 +0200
commit50bd0057ba8fceeb48533f8b1a652ccd0e170838 (patch)
treeea1a183343573c2a48248923b96d316c0956727c /lib_generic
parent9dbc366744960013965fce8851035b6141f3b3ae (diff)
parentf82642e33899766892499b163e60560fbbf87773 (diff)
downloadu-boot-imx-50bd0057ba8fceeb48533f8b1a652ccd0e170838.zip
u-boot-imx-50bd0057ba8fceeb48533f8b1a652ccd0e170838.tar.gz
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Merge git://git.denx.de/u-boot into x1
Conflicts: drivers/usb/usb_ohci.c
Diffstat (limited to 'lib_generic')
-rw-r--r--lib_generic/Makefile1
-rw-r--r--lib_generic/rbtree.c390
-rw-r--r--lib_generic/vsprintf.c12
3 files changed, 397 insertions, 6 deletions
diff --git a/lib_generic/Makefile b/lib_generic/Makefile
index 7df5a2c..d62c39b 100644
--- a/lib_generic/Makefile
+++ b/lib_generic/Makefile
@@ -45,6 +45,7 @@ COBJS-y += string.o
COBJS-y += strmhz.o
COBJS-y += vsprintf.o
COBJS-y += zlib.o
+COBJS-$(CONFIG_RBTREE) += rbtree.o
COBJS := $(COBJS-y)
SRCS := $(COBJS:.o=.c)
diff --git a/lib_generic/rbtree.c b/lib_generic/rbtree.c
new file mode 100644
index 0000000..42eab49
--- /dev/null
+++ b/lib_generic/rbtree.c
@@ -0,0 +1,390 @@
+/*
+ Red Black Trees
+ (C) 1999 Andrea Arcangeli <andrea@suse.de>
+ (C) 2002 David Woodhouse <dwmw2@infradead.org>
+
+ This program 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 2 of the License, 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; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+ linux/lib/rbtree.c
+*/
+
+#include <ubi_uboot.h>
+#include <linux/rbtree.h>
+
+static void __rb_rotate_left(struct rb_node *node, struct rb_root *root)
+{
+ struct rb_node *right = node->rb_right;
+ struct rb_node *parent = rb_parent(node);
+
+ if ((node->rb_right = right->rb_left))
+ rb_set_parent(right->rb_left, node);
+ right->rb_left = node;
+
+ rb_set_parent(right, parent);
+
+ if (parent)
+ {
+ if (node == parent->rb_left)
+ parent->rb_left = right;
+ else
+ parent->rb_right = right;
+ }
+ else
+ root->rb_node = right;
+ rb_set_parent(node, right);
+}
+
+static void __rb_rotate_right(struct rb_node *node, struct rb_root *root)
+{
+ struct rb_node *left = node->rb_left;
+ struct rb_node *parent = rb_parent(node);
+
+ if ((node->rb_left = left->rb_right))
+ rb_set_parent(left->rb_right, node);
+ left->rb_right = node;
+
+ rb_set_parent(left, parent);
+
+ if (parent)
+ {
+ if (node == parent->rb_right)
+ parent->rb_right = left;
+ else
+ parent->rb_left = left;
+ }
+ else
+ root->rb_node = left;
+ rb_set_parent(node, left);
+}
+
+void rb_insert_color(struct rb_node *node, struct rb_root *root)
+{
+ struct rb_node *parent, *gparent;
+
+ while ((parent = rb_parent(node)) && rb_is_red(parent))
+ {
+ gparent = rb_parent(parent);
+
+ if (parent == gparent->rb_left)
+ {
+ {
+ register struct rb_node *uncle = gparent->rb_right;
+ if (uncle && rb_is_red(uncle))
+ {
+ rb_set_black(uncle);
+ rb_set_black(parent);
+ rb_set_red(gparent);
+ node = gparent;
+ continue;
+ }
+ }
+
+ if (parent->rb_right == node)
+ {
+ register struct rb_node *tmp;
+ __rb_rotate_left(parent, root);
+ tmp = parent;
+ parent = node;
+ node = tmp;
+ }
+
+ rb_set_black(parent);
+ rb_set_red(gparent);
+ __rb_rotate_right(gparent, root);
+ } else {
+ {
+ register struct rb_node *uncle = gparent->rb_left;
+ if (uncle && rb_is_red(uncle))
+ {
+ rb_set_black(uncle);
+ rb_set_black(parent);
+ rb_set_red(gparent);
+ node = gparent;
+ continue;
+ }
+ }
+
+ if (parent->rb_left == node)
+ {
+ register struct rb_node *tmp;
+ __rb_rotate_right(parent, root);
+ tmp = parent;
+ parent = node;
+ node = tmp;
+ }
+
+ rb_set_black(parent);
+ rb_set_red(gparent);
+ __rb_rotate_left(gparent, root);
+ }
+ }
+
+ rb_set_black(root->rb_node);
+}
+
+static void __rb_erase_color(struct rb_node *node, struct rb_node *parent,
+ struct rb_root *root)
+{
+ struct rb_node *other;
+
+ while ((!node || rb_is_black(node)) && node != root->rb_node)
+ {
+ if (parent->rb_left == node)
+ {
+ other = parent->rb_right;
+ if (rb_is_red(other))
+ {
+ rb_set_black(other);
+ rb_set_red(parent);
+ __rb_rotate_left(parent, root);
+ other = parent->rb_right;
+ }
+ if ((!other->rb_left || rb_is_black(other->rb_left)) &&
+ (!other->rb_right || rb_is_black(other->rb_right)))
+ {
+ rb_set_red(other);
+ node = parent;
+ parent = rb_parent(node);
+ }
+ else
+ {
+ if (!other->rb_right || rb_is_black(other->rb_right))
+ {
+ struct rb_node *o_left;
+ if ((o_left = other->rb_left))
+ rb_set_black(o_left);
+ rb_set_red(other);
+ __rb_rotate_right(other, root);
+ other = parent->rb_right;
+ }
+ rb_set_color(other, rb_color(parent));
+ rb_set_black(parent);
+ if (other->rb_right)
+ rb_set_black(other->rb_right);
+ __rb_rotate_left(parent, root);
+ node = root->rb_node;
+ break;
+ }
+ }
+ else
+ {
+ other = parent->rb_left;
+ if (rb_is_red(other))
+ {
+ rb_set_black(other);
+ rb_set_red(parent);
+ __rb_rotate_right(parent, root);
+ other = parent->rb_left;
+ }
+ if ((!other->rb_left || rb_is_black(other->rb_left)) &&
+ (!other->rb_right || rb_is_black(other->rb_right)))
+ {
+ rb_set_red(other);
+ node = parent;
+ parent = rb_parent(node);
+ }
+ else
+ {
+ if (!other->rb_left || rb_is_black(other->rb_left))
+ {
+ register struct rb_node *o_right;
+ if ((o_right = other->rb_right))
+ rb_set_black(o_right);
+ rb_set_red(other);
+ __rb_rotate_left(other, root);
+ other = parent->rb_left;
+ }
+ rb_set_color(other, rb_color(parent));
+ rb_set_black(parent);
+ if (other->rb_left)
+ rb_set_black(other->rb_left);
+ __rb_rotate_right(parent, root);
+ node = root->rb_node;
+ break;
+ }
+ }
+ }
+ if (node)
+ rb_set_black(node);
+}
+
+void rb_erase(struct rb_node *node, struct rb_root *root)
+{
+ struct rb_node *child, *parent;
+ int color;
+
+ if (!node->rb_left)
+ child = node->rb_right;
+ else if (!node->rb_right)
+ child = node->rb_left;
+ else
+ {
+ struct rb_node *old = node, *left;
+
+ node = node->rb_right;
+ while ((left = node->rb_left) != NULL)
+ node = left;
+ child = node->rb_right;
+ parent = rb_parent(node);
+ color = rb_color(node);
+
+ if (child)
+ rb_set_parent(child, parent);
+ if (parent == old) {
+ parent->rb_right = child;
+ parent = node;
+ } else
+ parent->rb_left = child;
+
+ node->rb_parent_color = old->rb_parent_color;
+ node->rb_right = old->rb_right;
+ node->rb_left = old->rb_left;
+
+ if (rb_parent(old))
+ {
+ if (rb_parent(old)->rb_left == old)
+ rb_parent(old)->rb_left = node;
+ else
+ rb_parent(old)->rb_right = node;
+ } else
+ root->rb_node = node;
+
+ rb_set_parent(old->rb_left, node);
+ if (old->rb_right)
+ rb_set_parent(old->rb_right, node);
+ goto color;
+ }
+
+ parent = rb_parent(node);
+ color = rb_color(node);
+
+ if (child)
+ rb_set_parent(child, parent);
+ if (parent)
+ {
+ if (parent->rb_left == node)
+ parent->rb_left = child;
+ else
+ parent->rb_right = child;
+ }
+ else
+ root->rb_node = child;
+
+ color:
+ if (color == RB_BLACK)
+ __rb_erase_color(child, parent, root);
+}
+
+/*
+ * This function returns the first node (in sort order) of the tree.
+ */
+struct rb_node *rb_first(struct rb_root *root)
+{
+ struct rb_node *n;
+
+ n = root->rb_node;
+ if (!n)
+ return NULL;
+ while (n->rb_left)
+ n = n->rb_left;
+ return n;
+}
+
+struct rb_node *rb_last(struct rb_root *root)
+{
+ struct rb_node *n;
+
+ n = root->rb_node;
+ if (!n)
+ return NULL;
+ while (n->rb_right)
+ n = n->rb_right;
+ return n;
+}
+
+struct rb_node *rb_next(struct rb_node *node)
+{
+ struct rb_node *parent;
+
+ if (rb_parent(node) == node)
+ return NULL;
+
+ /* If we have a right-hand child, go down and then left as far
+ as we can. */
+ if (node->rb_right) {
+ node = node->rb_right;
+ while (node->rb_left)
+ node=node->rb_left;
+ return node;
+ }
+
+ /* No right-hand children. Everything down and left is
+ smaller than us, so any 'next' node must be in the general
+ direction of our parent. Go up the tree; any time the
+ ancestor is a right-hand child of its parent, keep going
+ up. First time it's a left-hand child of its parent, said
+ parent is our 'next' node. */
+ while ((parent = rb_parent(node)) && node == parent->rb_right)
+ node = parent;
+
+ return parent;
+}
+
+struct rb_node *rb_prev(struct rb_node *node)
+{
+ struct rb_node *parent;
+
+ if (rb_parent(node) == node)
+ return NULL;
+
+ /* If we have a left-hand child, go down and then right as far
+ as we can. */
+ if (node->rb_left) {
+ node = node->rb_left;
+ while (node->rb_right)
+ node=node->rb_right;
+ return node;
+ }
+
+ /* No left-hand children. Go up till we find an ancestor which
+ is a right-hand child of its parent */
+ while ((parent = rb_parent(node)) && node == parent->rb_left)
+ node = parent;
+
+ return parent;
+}
+
+void rb_replace_node(struct rb_node *victim, struct rb_node *new,
+ struct rb_root *root)
+{
+ struct rb_node *parent = rb_parent(victim);
+
+ /* Set the surrounding nodes to point to the replacement */
+ if (parent) {
+ if (victim == parent->rb_left)
+ parent->rb_left = new;
+ else
+ parent->rb_right = new;
+ } else {
+ root->rb_node = new;
+ }
+ if (victim->rb_left)
+ rb_set_parent(victim->rb_left, new);
+ if (victim->rb_right)
+ rb_set_parent(victim->rb_right, new);
+
+ /* Copy the pointers/colour from the victim to the replacement */
+ *new = *victim;
+}
diff --git a/lib_generic/vsprintf.c b/lib_generic/vsprintf.c
index 7c9cfe1..6e903db 100644
--- a/lib_generic/vsprintf.c
+++ b/lib_generic/vsprintf.c
@@ -55,7 +55,7 @@ long simple_strtol(const char *cp,char **endp,unsigned int base)
return simple_strtoul(cp,endp,base);
}
-#ifdef CFG_64BIT_STRTOUL
+#ifdef CONFIG_SYS_64BIT_STRTOUL
unsigned long long simple_strtoull (const char *cp, char **endp, unsigned int base)
{
unsigned long long result = 0, value;
@@ -83,7 +83,7 @@ unsigned long long simple_strtoull (const char *cp, char **endp, unsigned int ba
*endp = (char *) cp;
return result;
}
-#endif /* CFG_64BIT_STRTOUL */
+#endif /* CONFIG_SYS_64BIT_STRTOUL */
/* we use this so that we can do without the ctype library */
#define is_digit(c) ((c) >= '0' && (c) <= '9')
@@ -105,7 +105,7 @@ static int skip_atoi(const char **s)
#define SPECIAL 32 /* 0x */
#define LARGE 64 /* use 'ABCDEF' instead of 'abcdef' */
-#ifdef CFG_64BIT_VSPRINTF
+#ifdef CONFIG_SYS_64BIT_VSPRINTF
#define do_div(n,base) ({ \
unsigned int __res; \
__res = ((unsigned long long) n) % base; \
@@ -121,7 +121,7 @@ static int skip_atoi(const char **s)
})
#endif
-#ifdef CFG_64BIT_VSPRINTF
+#ifdef CONFIG_SYS_64BIT_VSPRINTF
static char * number(char * str, long long num, unsigned int base, int size, int precision ,int type)
#else
static char * number(char * str, long num, unsigned int base, int size, int precision ,int type)
@@ -197,7 +197,7 @@ int sprintf(char * buf, const char *fmt, ...);
int vsprintf(char *buf, const char *fmt, va_list args)
{
int len;
-#ifdef CFG_64BIT_VSPRINTF
+#ifdef CONFIG_SYS_64BIT_VSPRINTF
unsigned long long num;
#else
unsigned long num;
@@ -352,7 +352,7 @@ int vsprintf(char *buf, const char *fmt, va_list args)
--fmt;
continue;
}
-#ifdef CFG_64BIT_VSPRINTF
+#ifdef CONFIG_SYS_64BIT_VSPRINTF
if (qualifier == 'q') /* "quad" for 64 bit variables */
num = va_arg(args, unsigned long long);
else