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-rw-r--r--src/helper/binarybuffer.h241
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diff --git a/src/helper/binarybuffer.h b/src/helper/binarybuffer.h
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-/***************************************************************************
- * Copyright (C) 2004, 2005 by Dominic Rath *
- * Dominic.Rath@gmx.de *
- * *
- * Copyright (C) 2007,2008 Øyvind Harboe *
- * oyvind.harboe@zylin.com *
- * *
- * 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, see <http://www.gnu.org/licenses/>. *
- ***************************************************************************/
-
-#ifndef OPENOCD_HELPER_BINARYBUFFER_H
-#define OPENOCD_HELPER_BINARYBUFFER_H
-
-#include "list.h"
-
-/** @file
- * Support functions to access arbitrary bits in a byte array
- */
-
-/**
- * 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(uint8_t *_buffer,
- unsigned first, unsigned num, uint32_t value)
-{
- uint8_t *buffer = _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));
- }
- }
-}
-
-/**
- * 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, 64-bit words.
- * @param _buffer The buffer whose bits will be set.
- * @param first The bit offset in @c _buffer to start writing (0-63).
- * @param num The number of bits from @c value to copy (1-64).
- * @param value Up to 64 bits that will be copied to _buffer.
- */
-static inline void buf_set_u64(uint8_t *_buffer,
- unsigned first, unsigned num, uint64_t value)
-{
- uint8_t *buffer = _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 if ((num == 64) && (first == 0)) {
- buffer[7] = (value >> 56) & 0xff;
- buffer[6] = (value >> 48) & 0xff;
- buffer[5] = (value >> 40) & 0xff;
- buffer[4] = (value >> 32) & 0xff;
- 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));
- }
- }
-}
-
-/**
- * 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 uint8_t *_buffer,
- unsigned first, unsigned num)
-{
- const uint8_t *buffer = _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;
- for (unsigned i = first; i < first + num; i++) {
- if (((buffer[i / 8] >> (i % 8)) & 1) == 1)
- result |= 1 << (i - first);
- }
- return result;
- }
-}
-
-/**
- * Retrieves @c num bits from @c _buffer, starting at the @c first bit,
- * returning the bits in a 64-bit word. This routine fast-paths reads
- * of little-endian, byte-aligned, 64-bit words.
- * @param _buffer The buffer whose bits will be read.
- * @param first The bit offset in @c _buffer to start reading (0-63).
- * @param num The number of bits from @c _buffer to read (1-64).
- * @returns Up to 64-bits that were read from @c _buffer.
- */
-static inline uint64_t buf_get_u64(const uint8_t *_buffer,
- unsigned first, unsigned num)
-{
- const uint8_t *buffer = _buffer;
-
- if ((num == 32) && (first == 0)) {
- return 0 + ((((uint32_t)buffer[3]) << 24) | /* Note - zero plus is to avoid a checkpatch bug */
- (((uint32_t)buffer[2]) << 16) |
- (((uint32_t)buffer[1]) << 8) |
- (((uint32_t)buffer[0]) << 0));
- } else if ((num == 64) && (first == 0)) {
- return 0 + ((((uint64_t)buffer[7]) << 56) | /* Note - zero plus is to avoid a checkpatch bug */
- (((uint64_t)buffer[6]) << 48) |
- (((uint64_t)buffer[5]) << 40) |
- (((uint64_t)buffer[4]) << 32) |
- (((uint64_t)buffer[3]) << 24) |
- (((uint64_t)buffer[2]) << 16) |
- (((uint64_t)buffer[1]) << 8) |
- (((uint64_t)buffer[0]) << 0));
- } else {
- uint64_t result = 0;
- for (unsigned i = first; i < first + num; i++) {
- if (((buffer[i / 8] >> (i % 8)) & 1) == 1)
- result = result | ((uint64_t)1 << (uint64_t)(i - first));
- }
- return result;
- }
-}
-
-
-/**
- * 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);
-
-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);
-
-/**
- * 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);
-
-/**
- * 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);
-
-void *buf_set_buf(const void *src, unsigned src_start,
- void *dst, unsigned dst_start, unsigned len);
-
-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 void *p, bool le)
-{
- 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);
-void buffer_shr(void *_buf, unsigned buf_len, unsigned count);
-
-#endif /* OPENOCD_HELPER_BINARYBUFFER_H */
generated by cgit v1.1 at 2026-02-03 23:20:02 +0000