diff options
author | Igor Pavlov <ipavlov@users.sourceforge.net> | 2007-01-20 03:00:00 +0300 |
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committer | Kornel LesiĆski <kornel@geekhood.net> | 2016-05-28 02:15:49 +0300 |
commit | d9666cf046a8453b33b3e2fbf4d82295a9f87df3 (patch) | |
tree | c722ed19b844b53042aec0c1d7d2f8381140a5ed /C/Compress/Branch/BranchPPC.c | |
parent | 804edc5756fede54dbb1aefda6d39d306111938d (diff) |
4.44 beta
Diffstat (limited to 'C/Compress/Branch/BranchPPC.c')
-rwxr-xr-x | C/Compress/Branch/BranchPPC.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/C/Compress/Branch/BranchPPC.c b/C/Compress/Branch/BranchPPC.c new file mode 100755 index 00000000..b3e5703f --- /dev/null +++ b/C/Compress/Branch/BranchPPC.c @@ -0,0 +1,36 @@ +/* BranchPPC.c */ + +#include "BranchPPC.h" + +UInt32 PPC_B_Convert(Byte *data, UInt32 size, UInt32 nowPos, int encoding) +{ + UInt32 i; + for (i = 0; i + 4 <= size; i += 4) + { + /* PowerPC branch 6(48) 24(Offset) 1(Abs) 1(Link) */ + if ((data[i] >> 2) == 0x12 && + ( + (data[i + 3] & 3) == 1 + /* || (data[i+3] & 3) == 3 */ + ) + ) + { + UInt32 src = ((data[i + 0] & 3) << 24) | + (data[i + 1] << 16) | + (data[i + 2] << 8) | + (data[i + 3] & (~3)); + + UInt32 dest; + if (encoding) + dest = nowPos + i + src; + else + dest = src - (nowPos + i); + data[i + 0] = (Byte)(0x48 | ((dest >> 24) & 0x3)); + data[i + 1] = (Byte)(dest >> 16); + data[i + 2] = (Byte)(dest >> 8); + data[i + 3] &= 0x3; + data[i + 3] |= dest; + } + } + return i; +} |