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-rw-r--r--include/qemu/bitmap.h86
1 files changed, 48 insertions, 38 deletions
diff --git a/include/qemu/bitmap.h b/include/qemu/bitmap.h
index 308bbb71e9..1babd5d812 100644
--- a/include/qemu/bitmap.h
+++ b/include/qemu/bitmap.h
@@ -31,7 +31,7 @@
* bitmap_andnot(dst, src1, src2, nbits) *dst = *src1 & ~(*src2)
* bitmap_complement(dst, src, nbits) *dst = ~(*src)
* bitmap_equal(src1, src2, nbits) Are *src1 and *src2 equal?
- * bitmap_intersects(src1, src2, nbits) Do *src1 and *src2 overlap?
+ * bitmap_intersects(src1, src2, nbits) Do *src1 and *src2 overlap?
* bitmap_empty(src, nbits) Are all bits zero in *src?
* bitmap_full(src, nbits) Are all bits set in *src?
* bitmap_set(dst, pos, nbits) Set specified bit area
@@ -62,71 +62,71 @@
)
#define DECLARE_BITMAP(name,bits) \
- unsigned long name[BITS_TO_LONGS(bits)]
+ unsigned long name[BITS_TO_LONGS(bits)]
#define small_nbits(nbits) \
- ((nbits) <= BITS_PER_LONG)
+ ((nbits) <= BITS_PER_LONG)
-int slow_bitmap_empty(const unsigned long *bitmap, int bits);
-int slow_bitmap_full(const unsigned long *bitmap, int bits);
+int slow_bitmap_empty(const unsigned long *bitmap, long bits);
+int slow_bitmap_full(const unsigned long *bitmap, long bits);
int slow_bitmap_equal(const unsigned long *bitmap1,
- const unsigned long *bitmap2, int bits);
+ const unsigned long *bitmap2, long bits);
void slow_bitmap_complement(unsigned long *dst, const unsigned long *src,
- int bits);
+ long bits);
void slow_bitmap_shift_right(unsigned long *dst,
- const unsigned long *src, int shift, int bits);
+ const unsigned long *src, int shift, long bits);
void slow_bitmap_shift_left(unsigned long *dst,
- const unsigned long *src, int shift, int bits);
+ const unsigned long *src, int shift, long bits);
int slow_bitmap_and(unsigned long *dst, const unsigned long *bitmap1,
- const unsigned long *bitmap2, int bits);
+ const unsigned long *bitmap2, long bits);
void slow_bitmap_or(unsigned long *dst, const unsigned long *bitmap1,
- const unsigned long *bitmap2, int bits);
+ const unsigned long *bitmap2, long bits);
void slow_bitmap_xor(unsigned long *dst, const unsigned long *bitmap1,
- const unsigned long *bitmap2, int bits);
+ const unsigned long *bitmap2, long bits);
int slow_bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1,
- const unsigned long *bitmap2, int bits);
+ const unsigned long *bitmap2, long bits);
int slow_bitmap_intersects(const unsigned long *bitmap1,
- const unsigned long *bitmap2, int bits);
+ const unsigned long *bitmap2, long bits);
-static inline unsigned long *bitmap_new(int nbits)
+static inline unsigned long *bitmap_new(long nbits)
{
- int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long);
+ long len = BITS_TO_LONGS(nbits) * sizeof(unsigned long);
return g_malloc0(len);
}
-static inline void bitmap_zero(unsigned long *dst, int nbits)
+static inline void bitmap_zero(unsigned long *dst, long nbits)
{
if (small_nbits(nbits)) {
*dst = 0UL;
} else {
- int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long);
+ long len = BITS_TO_LONGS(nbits) * sizeof(unsigned long);
memset(dst, 0, len);
}
}
-static inline void bitmap_fill(unsigned long *dst, int nbits)
+static inline void bitmap_fill(unsigned long *dst, long nbits)
{
size_t nlongs = BITS_TO_LONGS(nbits);
if (!small_nbits(nbits)) {
- int len = (nlongs - 1) * sizeof(unsigned long);
+ long len = (nlongs - 1) * sizeof(unsigned long);
memset(dst, 0xff, len);
}
dst[nlongs - 1] = BITMAP_LAST_WORD_MASK(nbits);
}
static inline void bitmap_copy(unsigned long *dst, const unsigned long *src,
- int nbits)
+ long nbits)
{
if (small_nbits(nbits)) {
*dst = *src;
} else {
- int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long);
+ long len = BITS_TO_LONGS(nbits) * sizeof(unsigned long);
memcpy(dst, src, len);
}
}
static inline int bitmap_and(unsigned long *dst, const unsigned long *src1,
- const unsigned long *src2, int nbits)
+ const unsigned long *src2, long nbits)
{
if (small_nbits(nbits)) {
return (*dst = *src1 & *src2) != 0;
@@ -135,7 +135,7 @@ static inline int bitmap_and(unsigned long *dst, const unsigned long *src1,
}
static inline void bitmap_or(unsigned long *dst, const unsigned long *src1,
- const unsigned long *src2, int nbits)
+ const unsigned long *src2, long nbits)
{
if (small_nbits(nbits)) {
*dst = *src1 | *src2;
@@ -145,7 +145,7 @@ static inline void bitmap_or(unsigned long *dst, const unsigned long *src1,
}
static inline void bitmap_xor(unsigned long *dst, const unsigned long *src1,
- const unsigned long *src2, int nbits)
+ const unsigned long *src2, long nbits)
{
if (small_nbits(nbits)) {
*dst = *src1 ^ *src2;
@@ -155,7 +155,7 @@ static inline void bitmap_xor(unsigned long *dst, const unsigned long *src1,
}
static inline int bitmap_andnot(unsigned long *dst, const unsigned long *src1,
- const unsigned long *src2, int nbits)
+ const unsigned long *src2, long nbits)
{
if (small_nbits(nbits)) {
return (*dst = *src1 & ~(*src2)) != 0;
@@ -163,8 +163,9 @@ static inline int bitmap_andnot(unsigned long *dst, const unsigned long *src1,
return slow_bitmap_andnot(dst, src1, src2, nbits);
}
-static inline void bitmap_complement(unsigned long *dst, const unsigned long *src,
- int nbits)
+static inline void bitmap_complement(unsigned long *dst,
+ const unsigned long *src,
+ long nbits)
{
if (small_nbits(nbits)) {
*dst = ~(*src) & BITMAP_LAST_WORD_MASK(nbits);
@@ -174,7 +175,7 @@ static inline void bitmap_complement(unsigned long *dst, const unsigned long *sr
}
static inline int bitmap_equal(const unsigned long *src1,
- const unsigned long *src2, int nbits)
+ const unsigned long *src2, long nbits)
{
if (small_nbits(nbits)) {
return ! ((*src1 ^ *src2) & BITMAP_LAST_WORD_MASK(nbits));
@@ -183,7 +184,7 @@ static inline int bitmap_equal(const unsigned long *src1,
}
}
-static inline int bitmap_empty(const unsigned long *src, int nbits)
+static inline int bitmap_empty(const unsigned long *src, long nbits)
{
if (small_nbits(nbits)) {
return ! (*src & BITMAP_LAST_WORD_MASK(nbits));
@@ -192,7 +193,7 @@ static inline int bitmap_empty(const unsigned long *src, int nbits)
}
}
-static inline int bitmap_full(const unsigned long *src, int nbits)
+static inline int bitmap_full(const unsigned long *src, long nbits)
{
if (small_nbits(nbits)) {
return ! (~(*src) & BITMAP_LAST_WORD_MASK(nbits));
@@ -202,7 +203,7 @@ static inline int bitmap_full(const unsigned long *src, int nbits)
}
static inline int bitmap_intersects(const unsigned long *src1,
- const unsigned long *src2, int nbits)
+ const unsigned long *src2, long nbits)
{
if (small_nbits(nbits)) {
return ((*src1 & *src2) & BITMAP_LAST_WORD_MASK(nbits)) != 0;
@@ -211,12 +212,21 @@ static inline int bitmap_intersects(const unsigned long *src1,
}
}
-void bitmap_set(unsigned long *map, int i, int len);
-void bitmap_clear(unsigned long *map, int start, int nr);
+void bitmap_set(unsigned long *map, long i, long len);
+void bitmap_clear(unsigned long *map, long start, long nr);
unsigned long bitmap_find_next_zero_area(unsigned long *map,
- unsigned long size,
- unsigned long start,
- unsigned int nr,
- unsigned long align_mask);
+ unsigned long size,
+ unsigned long start,
+ unsigned long nr,
+ unsigned long align_mask);
+
+static inline unsigned long *bitmap_zero_extend(unsigned long *old,
+ long old_nbits, long new_nbits)
+{
+ long new_len = BITS_TO_LONGS(new_nbits) * sizeof(unsigned long);
+ unsigned long *new = g_realloc(old, new_len);
+ bitmap_clear(new, old_nbits, new_nbits - old_nbits);
+ return new;
+}
#endif /* BITMAP_H */
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2025-04-25 15:11:08 +0200