X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=blobdiff_plain;f=src%2Fhelper%2Fbinarybuffer.h;h=400cbbe6511742771e73f8bccb1d31a30547c44f;hp=2399a6edd5aca66c48f4ff50a24d7256723be539;hb=5a43bd2e185bf469561a8370dcd543cc4813c33f;hpb=bc07ee82fbeb05a93f91d077d0628d4e369c5aeb diff --git a/src/helper/binarybuffer.h b/src/helper/binarybuffer.h index 2399a6edd5..400cbbe651 100644 --- a/src/helper/binarybuffer.h +++ b/src/helper/binarybuffer.h @@ -25,56 +25,49 @@ #include "types.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) { - 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 ((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); + 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) { - if ((num == 32) && (first == 0)) - { + 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++) + for (unsigned i = first; i < first + num; i++) { - if (((buffer[i/8]>>(i%8))&1) == 1) - result |= 1 << (i-first); + if (((buffer[i / 8] >> (i % 8)) & 1) == 1) + result |= 1 << (i - first); } - return result; } } +/// flip_u32 inverts the bit order inside a 32-bit word (31..0 -> 0..31) uint32_t flip_u32(uint32_t value, unsigned int num); int buf_cmp(const uint8_t *buf1, const uint8_t *buf2, int size);