/* Bra.c -- Converters for RISC code | |
2010-04-16 : Igor Pavlov : Public domain */ | |
#include "Bra.h" | |
SizeT ARM_Convert(Byte *data, SizeT size, UInt32 ip, int encoding) | |
{ | |
SizeT i; | |
if (size < 4) | |
return 0; | |
size -= 4; | |
ip += 8; | |
for (i = 0; i <= size; i += 4) | |
{ | |
if (data[i + 3] == 0xEB) | |
{ | |
UInt32 dest; | |
UInt32 src = ((UInt32)data[i + 2] << 16) | ((UInt32)data[i + 1] << 8) | (data[i + 0]); | |
src <<= 2; | |
if (encoding) | |
dest = ip + (UInt32)i + src; | |
else | |
dest = src - (ip + (UInt32)i); | |
dest >>= 2; | |
data[i + 2] = (Byte)(dest >> 16); | |
data[i + 1] = (Byte)(dest >> 8); | |
data[i + 0] = (Byte)dest; | |
} | |
} | |
return i; | |
} | |
SizeT ARMT_Convert(Byte *data, SizeT size, UInt32 ip, int encoding) | |
{ | |
SizeT i; | |
if (size < 4) | |
return 0; | |
size -= 4; | |
ip += 4; | |
for (i = 0; i <= size; i += 2) | |
{ | |
if ((data[i + 1] & 0xF8) == 0xF0 && | |
(data[i + 3] & 0xF8) == 0xF8) | |
{ | |
UInt32 dest; | |
UInt32 src = | |
(((UInt32)data[i + 1] & 0x7) << 19) | | |
((UInt32)data[i + 0] << 11) | | |
(((UInt32)data[i + 3] & 0x7) << 8) | | |
(data[i + 2]); | |
src <<= 1; | |
if (encoding) | |
dest = ip + (UInt32)i + src; | |
else | |
dest = src - (ip + (UInt32)i); | |
dest >>= 1; | |
data[i + 1] = (Byte)(0xF0 | ((dest >> 19) & 0x7)); | |
data[i + 0] = (Byte)(dest >> 11); | |
data[i + 3] = (Byte)(0xF8 | ((dest >> 8) & 0x7)); | |
data[i + 2] = (Byte)dest; | |
i += 2; | |
} | |
} | |
return i; | |
} | |
SizeT PPC_Convert(Byte *data, SizeT size, UInt32 ip, int encoding) | |
{ | |
SizeT i; | |
if (size < 4) | |
return 0; | |
size -= 4; | |
for (i = 0; i <= size; i += 4) | |
{ | |
if ((data[i] >> 2) == 0x12 && (data[i + 3] & 3) == 1) | |
{ | |
UInt32 src = ((UInt32)(data[i + 0] & 3) << 24) | | |
((UInt32)data[i + 1] << 16) | | |
((UInt32)data[i + 2] << 8) | | |
((UInt32)data[i + 3] & (~3)); | |
UInt32 dest; | |
if (encoding) | |
dest = ip + (UInt32)i + src; | |
else | |
dest = src - (ip + (UInt32)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; | |
} | |
SizeT SPARC_Convert(Byte *data, SizeT size, UInt32 ip, int encoding) | |
{ | |
UInt32 i; | |
if (size < 4) | |
return 0; | |
size -= 4; | |
for (i = 0; i <= size; i += 4) | |
{ | |
if ((data[i] == 0x40 && (data[i + 1] & 0xC0) == 0x00) || | |
(data[i] == 0x7F && (data[i + 1] & 0xC0) == 0xC0)) | |
{ | |
UInt32 src = | |
((UInt32)data[i + 0] << 24) | | |
((UInt32)data[i + 1] << 16) | | |
((UInt32)data[i + 2] << 8) | | |
((UInt32)data[i + 3]); | |
UInt32 dest; | |
src <<= 2; | |
if (encoding) | |
dest = ip + i + src; | |
else | |
dest = src - (ip + i); | |
dest >>= 2; | |
dest = (((0 - ((dest >> 22) & 1)) << 22) & 0x3FFFFFFF) | (dest & 0x3FFFFF) | 0x40000000; | |
data[i + 0] = (Byte)(dest >> 24); | |
data[i + 1] = (Byte)(dest >> 16); | |
data[i + 2] = (Byte)(dest >> 8); | |
data[i + 3] = (Byte)dest; | |
} | |
} | |
return i; | |
} |