* Copyright (C) 2004, 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
- * Copyright (C) 2007,2008 Øyvind Harboe *
+ * Copyright (C) 2007,2008 Øyvind Harboe *
* oyvind.harboe@zylin.com *
* *
* This program is free software; you can redistribute it and/or modify *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
+
#ifndef BINARYBUFFER_H
#define BINARYBUFFER_H
-#include "types.h"
+#include "list.h"
-/* support functions to access arbitrary bits in a byte array
- * flip_u32 inverses the bit order inside a 32-bit word (31..0 -> 0..31)
+/** @file
+ * Support functions to access arbitrary bits in a byte array
*/
-/* inlining this will help show what fn that is taking time during profiling. */
-static inline void buf_set_u32(uint8_t* buffer, unsigned int first, unsigned int num, uint32_t value)
+/**
+ * Sets @c num bits in @c _buffer, starting at the @c first bit,
+ * using the bits in @c value. This routine fast-paths writes
+ * of little-endian, byte-aligned, 32-bit words.
+ * @param _buffer The buffer whose bits will be set.
+ * @param first The bit offset in @c _buffer to start writing (0-31).
+ * @param num The number of bits from @c value to copy (1-32).
+ * @param value Up to 32 bits that will be copied to _buffer.
+ */
+static inline void buf_set_u32(void *_buffer,
+ unsigned first, unsigned num, uint32_t value)
{
- if ((num == 32) && (first == 0))
- {
- buffer[3]=(value >> 24)&0xff;
- buffer[2]=(value >> 16)&0xff;
- buffer[1]=(value >> 8)&0xff;
- buffer[0]=(value >> 0)&0xff;
- } else
- {
- unsigned int i;
-
- for (i=first; i<first+num; i++)
- {
- if (((value >> (i-first))&1) == 1)
- buffer[i/8] |= 1 << (i%8);
+ uint8_t *buffer = (uint8_t *)_buffer;
+
+ if ((num == 32) && (first == 0)) {
+ buffer[3] = (value >> 24) & 0xff;
+ buffer[2] = (value >> 16) & 0xff;
+ buffer[1] = (value >> 8) & 0xff;
+ buffer[0] = (value >> 0) & 0xff;
+ } else {
+ for (unsigned i = first; i < first + num; i++) {
+ if (((value >> (i - first)) & 1) == 1)
+ buffer[i / 8] |= 1 << (i % 8);
else
- buffer[i/8] &= ~(1 << (i%8));
+ buffer[i / 8] &= ~(1 << (i % 8));
}
}
}
-static inline uint32_t buf_get_u32(const uint8_t* buffer, unsigned int first, unsigned int num)
+/**
+ * Retrieves @c num bits from @c _buffer, starting at the @c first bit,
+ * returning the bits in a 32-bit word. This routine fast-paths reads
+ * of little-endian, byte-aligned, 32-bit words.
+ * @param _buffer The buffer whose bits will be read.
+ * @param first The bit offset in @c _buffer to start reading (0-31).
+ * @param num The number of bits from @c _buffer to read (1-32).
+ * @returns Up to 32-bits that were read from @c _buffer.
+ */
+static inline uint32_t buf_get_u32(const void *_buffer,
+ unsigned first, unsigned num)
{
- if ((num == 32) && (first == 0))
- {
- return (((uint32_t)buffer[3]) << 24)|(((uint32_t)buffer[2]) << 16)|(((uint32_t)buffer[1]) << 8)|(((uint32_t)buffer[0]) << 0);
- } else
- {
+ uint8_t *buffer = (uint8_t *)_buffer;
+
+ if ((num == 32) && (first == 0)) {
+ return (((uint32_t)buffer[3]) << 24) |
+ (((uint32_t)buffer[2]) << 16) |
+ (((uint32_t)buffer[1]) << 8) |
+ (((uint32_t)buffer[0]) << 0);
+ } else {
uint32_t result = 0;
- unsigned int i;
-
- for (i=first; i<first+num; i++)
- {
- if (((buffer[i/8]>>(i%8))&1) == 1)
- result |= 1 << (i-first);
+ for (unsigned i = first; i < first + num; i++) {
+ if (((buffer[i / 8] >> (i % 8)) & 1) == 1)
+ result |= 1 << (i - first);
}
-
return result;
}
}
-extern uint32_t flip_u32(uint32_t value, unsigned int num);
+/**
+ * Inverts the ordering of bits inside a 32-bit word (e.g. 31..0 -> 0..31).
+ * This routine can be used to flip smaller data types by using smaller
+ * values for @c width.
+ * @param value The word to flip.
+ * @param width The number of bits in value (2-32).
+ * @returns A 32-bit word with @c value in reversed bit-order.
+ */
+uint32_t flip_u32(uint32_t value, unsigned width);
-extern int buf_cmp(const uint8_t *buf1, const uint8_t *buf2, int size);
-extern int buf_cmp_mask(const uint8_t *buf1, const uint8_t *buf2, const uint8_t *mask, int size);
-extern uint8_t* buf_cpy(const uint8_t *from, uint8_t *to, int size);
+bool buf_cmp(const void *buf1, const void *buf2, unsigned size);
+bool buf_cmp_mask(const void *buf1, const void *buf2,
+ const void *mask, unsigned size);
-extern uint8_t* buf_set_ones(uint8_t *buf, int count);
-extern uint8_t* buf_set_buf(const uint8_t *src, int src_start, uint8_t *dst, int dst_start, int len);
+/**
+ * Copies @c size bits out of @c from and into @c to. Any extra
+ * bits in the final byte will be set to zero.
+ * @param from The buffer to copy into @c to.
+ * @param to The buffer that will receive the copy of @c from.
+ * @param size The number of bits to copy.
+ */
+void *buf_cpy(const void *from, void *to, unsigned size);
-extern int str_to_buf(const char *str, int len, uint8_t *bin_buf, int buf_size, int radix);
-extern char* buf_to_str(const uint8_t *buf, int size, int radix);
+/**
+ * Set the contents of @c buf with @c count bits, all set to 1.
+ * @param buf The buffer to fill with ones.
+ * @param size The number of bits.
+ * @returns The original buffer (@c buf).
+ */
+void *buf_set_ones(void *buf, unsigned size);
-struct scan_field_s;
-extern int buf_to_u32_handler(uint8_t *in_buf, void *priv, struct scan_field_s *field);
+void *buf_set_buf(const void *src, unsigned src_start,
+ void *dst, unsigned dst_start, unsigned len);
-#define CEIL(m, n) ((m + n - 1) / n)
+int str_to_buf(const char *str, unsigned len,
+ void *bin_buf, unsigned buf_size, unsigned radix);
+char *buf_to_str(const void *buf, unsigned size, unsigned radix);
/* read a uint32_t from a buffer in target memory endianness */
-static inline uint32_t fast_target_buffer_get_u32(const uint8_t *buffer, int little)
+static inline uint32_t fast_target_buffer_get_u32(const void *p, bool le)
{
- if (little)
- return le_to_h_u32(buffer);
- else
- return be_to_h_u32(buffer);
+ return le ? le_to_h_u32(p) : be_to_h_u32(p);
}
+static inline void bit_copy(uint8_t *dst, unsigned dst_offset, const uint8_t *src,
+ unsigned src_offset, unsigned bit_count)
+{
+ buf_set_buf(src, src_offset, dst, dst_offset, bit_count);
+}
+
+struct bit_copy_queue {
+ struct list_head list;
+};
+
+struct bit_copy_queue_entry {
+ uint8_t *dst;
+ unsigned dst_offset;
+ const uint8_t *src;
+ unsigned src_offset;
+ unsigned bit_count;
+ struct list_head list;
+};
+
+void bit_copy_queue_init(struct bit_copy_queue *q);
+int bit_copy_queued(struct bit_copy_queue *q, uint8_t *dst, unsigned dst_offset, const uint8_t *src,
+ unsigned src_offset, unsigned bit_count);
+void bit_copy_execute(struct bit_copy_queue *q);
+void bit_copy_discard(struct bit_copy_queue *q);
+
+/* functions to convert to/from hex encoded buffer
+ * used in ti-icdi driver and gdb server */
+int unhexify(char *bin, const char *hex, int count);
+int hexify(char *hex, const char *bin, int count, int out_maxlen);
+
#endif /* BINARYBUFFER_H */
projects / openocd / blobdiff