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Diffstat (limited to 'ld/ld_utils.h')
| -rw-r--r-- | ld/ld_utils.h | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/ld/ld_utils.h b/ld/ld_utils.h new file mode 100644 index 0000000000000..a4ed642d1b58a --- /dev/null +++ b/ld/ld_utils.h @@ -0,0 +1,164 @@ +/*- + * Copyright (c) 2012,2013 Kai Wang + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $Id: ld_utils.h 2908 2013-02-03 06:06:01Z kaiwang27 $ + */ + +#define READ_16(P,V) \ + do { \ + if (lo->lo_endian == ELFDATA2MSB) \ + READ_16BE(P, V); \ + else \ + READ_16LE(P, V); \ + } while (0) + +#define READ_32(P,V) \ + do { \ + if (lo->lo_endian == ELFDATA2MSB) \ + READ_32BE(P, V); \ + else \ + READ_32LE(P, V); \ + } while (0) + +#define READ_64(P,V) \ + do { \ + if (lo->lo_endian == ELFDATA2MSB) \ + READ_64BE(P, V); \ + else \ + READ_64LE(P, V); \ + } while (0) + +#define READ_16BE(P,V) \ + do { \ + (V) = ((P)[0] << 8) | (P)[1]; \ + } while (0) + +#define READ_32BE(P,V) \ + do { \ + (V) = ((unsigned)(P)[0] << 24) | ((P)[1] << 16) | \ + ((P)[2] << 8) | (P)[3]; \ + } while (0) + +#define READ_64BE(P,V) \ + do { \ + (V) = ((uint64_t)(P)[0] << 56) | \ + ((uint64_t)(P)[1] << 48) | \ + ((uint64_t)(P)[2] << 40) | \ + ((uint64_t)(P)[3] << 32) | \ + ((uint64_t)(P)[4] << 24) | \ + ((uint64_t)(P)[5] << 16) | \ + ((uint64_t)(P)[6] << 8) | (P)[7]; \ + } while (0) + +#define READ_16LE(P,V) \ + do { \ + (V) = ((P)[1] << 8) | (P)[0]; \ + } while (0) + +#define READ_32LE(P,V) \ + do { \ + (V) = ((unsigned)(P)[3] << 24) | ((P)[2] << 16) | \ + ((P)[1] << 8) | (P)[0]; \ + } while (0) + +#define READ_64LE(P,V) \ + do { \ + (V) = ((uint64_t)(P)[7] << 56) | \ + ((uint64_t)(P)[6] << 48) | \ + ((uint64_t)(P)[5] << 40) | \ + ((uint64_t)(P)[4] << 32) | \ + ((uint64_t)(P)[3] << 24) | \ + ((uint64_t)(P)[2] << 16) | \ + ((uint64_t)(P)[1] << 8) | (P)[0]; \ + } while (0) + +#define WRITE_8(P,V) \ + do { \ + *(P) = (V) & 0xff; \ + } while (0) + +#define WRITE_16(P,V) \ + do { \ + if (lo->lo_endian == ELFDATA2MSB) \ + WRITE_16BE(P, V); \ + else \ + WRITE_16LE(P, V); \ + } while (0) + +#define WRITE_32(P,V) \ + do { \ + if (lo->lo_endian == ELFDATA2MSB) \ + WRITE_32BE(P, V); \ + else \ + WRITE_32LE(P, V); \ + } while (0) + +#define WRITE_64(P,V) \ + do { \ + if (lo->lo_endian == ELFDATA2MSB) \ + WRITE_64BE(P, V); \ + else \ + WRITE_64LE(P, V); \ + } while (0) + +#define WRITE_16BE(P,V) \ + do { \ + (P)[0] = ((V) >> 8) & 0xff; \ + (P)[1] = (V) & 0xff; \ + } while (0) + +#define WRITE_32BE(P,V) \ + do { \ + (P)[0] = ((V) >> 24) & 0xff; \ + (P)[1] = ((V) >> 16) & 0xff; \ + (P)[2] = ((V) >> 8) & 0xff; \ + (P)[3] = (V) & 0xff; \ + } while (0) + +#define WRITE_64BE(P,V) \ + do { \ + WRITE_32BE((P),(V) >> 32); \ + WRITE_32BE((P) + 4, (V) & 0xffffffffU); \ + } while (0) + +#define WRITE_16LE(P,V) \ + do { \ + (P)[0] = (V) & 0xff; \ + (P)[1] = ((V) >> 8) & 0xff; \ + } while (0) + +#define WRITE_32LE(P,V) \ + do { \ + (P)[0] = (V) & 0xff; \ + (P)[1] = ((V) >> 8) & 0xff; \ + (P)[2] = ((V) >> 16) & 0xff; \ + (P)[3] = ((V) >> 24) & 0xff; \ + } while (0) + +#define WRITE_64LE(P,V) \ + do { \ + WRITE_32LE((P), (V) & 0xffffffffU); \ + WRITE_32LE((P) + 4, (V) >> 32); \ + } while (0) |