mirror of
https://github.com/ZDoom/raze-gles.git
synced 2024-12-27 04:00:42 +00:00
718112a8fe
Currently none of these is being used, but eventually they will, once more code gets ported over. So it's better to have them right away and avoid editing the project file too much, only to revert that later.
230 lines
4 KiB
C
230 lines
4 KiB
C
/* Bra.c -- Converters for RISC code
|
|
2017-04-04 : Igor Pavlov : Public domain */
|
|
|
|
#include "Precomp.h"
|
|
|
|
#include "CpuArch.h"
|
|
#include "Bra.h"
|
|
|
|
SizeT ARM_Convert(Byte *data, SizeT size, UInt32 ip, int encoding)
|
|
{
|
|
Byte *p;
|
|
const Byte *lim;
|
|
size &= ~(size_t)3;
|
|
ip += 4;
|
|
p = data;
|
|
lim = data + size;
|
|
|
|
if (encoding)
|
|
|
|
for (;;)
|
|
{
|
|
for (;;)
|
|
{
|
|
if (p >= lim)
|
|
return p - data;
|
|
p += 4;
|
|
if (p[-1] == 0xEB)
|
|
break;
|
|
}
|
|
{
|
|
UInt32 v = GetUi32(p - 4);
|
|
v <<= 2;
|
|
v += ip + (UInt32)(p - data);
|
|
v >>= 2;
|
|
v &= 0x00FFFFFF;
|
|
v |= 0xEB000000;
|
|
SetUi32(p - 4, v);
|
|
}
|
|
}
|
|
|
|
for (;;)
|
|
{
|
|
for (;;)
|
|
{
|
|
if (p >= lim)
|
|
return p - data;
|
|
p += 4;
|
|
if (p[-1] == 0xEB)
|
|
break;
|
|
}
|
|
{
|
|
UInt32 v = GetUi32(p - 4);
|
|
v <<= 2;
|
|
v -= ip + (UInt32)(p - data);
|
|
v >>= 2;
|
|
v &= 0x00FFFFFF;
|
|
v |= 0xEB000000;
|
|
SetUi32(p - 4, v);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
SizeT ARMT_Convert(Byte *data, SizeT size, UInt32 ip, int encoding)
|
|
{
|
|
Byte *p;
|
|
const Byte *lim;
|
|
size &= ~(size_t)1;
|
|
p = data;
|
|
lim = data + size - 4;
|
|
|
|
if (encoding)
|
|
|
|
for (;;)
|
|
{
|
|
UInt32 b1;
|
|
for (;;)
|
|
{
|
|
UInt32 b3;
|
|
if (p > lim)
|
|
return p - data;
|
|
b1 = p[1];
|
|
b3 = p[3];
|
|
p += 2;
|
|
b1 ^= 8;
|
|
if ((b3 & b1) >= 0xF8)
|
|
break;
|
|
}
|
|
{
|
|
UInt32 v =
|
|
((UInt32)b1 << 19)
|
|
+ (((UInt32)p[1] & 0x7) << 8)
|
|
+ (((UInt32)p[-2] << 11))
|
|
+ (p[0]);
|
|
|
|
p += 2;
|
|
{
|
|
UInt32 cur = (ip + (UInt32)(p - data)) >> 1;
|
|
v += cur;
|
|
}
|
|
|
|
p[-4] = (Byte)(v >> 11);
|
|
p[-3] = (Byte)(0xF0 | ((v >> 19) & 0x7));
|
|
p[-2] = (Byte)v;
|
|
p[-1] = (Byte)(0xF8 | (v >> 8));
|
|
}
|
|
}
|
|
|
|
for (;;)
|
|
{
|
|
UInt32 b1;
|
|
for (;;)
|
|
{
|
|
UInt32 b3;
|
|
if (p > lim)
|
|
return p - data;
|
|
b1 = p[1];
|
|
b3 = p[3];
|
|
p += 2;
|
|
b1 ^= 8;
|
|
if ((b3 & b1) >= 0xF8)
|
|
break;
|
|
}
|
|
{
|
|
UInt32 v =
|
|
((UInt32)b1 << 19)
|
|
+ (((UInt32)p[1] & 0x7) << 8)
|
|
+ (((UInt32)p[-2] << 11))
|
|
+ (p[0]);
|
|
|
|
p += 2;
|
|
{
|
|
UInt32 cur = (ip + (UInt32)(p - data)) >> 1;
|
|
v -= cur;
|
|
}
|
|
|
|
/*
|
|
SetUi16(p - 4, (UInt16)(((v >> 11) & 0x7FF) | 0xF000));
|
|
SetUi16(p - 2, (UInt16)(v | 0xF800));
|
|
*/
|
|
|
|
p[-4] = (Byte)(v >> 11);
|
|
p[-3] = (Byte)(0xF0 | ((v >> 19) & 0x7));
|
|
p[-2] = (Byte)v;
|
|
p[-1] = (Byte)(0xF8 | (v >> 8));
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
SizeT PPC_Convert(Byte *data, SizeT size, UInt32 ip, int encoding)
|
|
{
|
|
Byte *p;
|
|
const Byte *lim;
|
|
size &= ~(size_t)3;
|
|
ip -= 4;
|
|
p = data;
|
|
lim = data + size;
|
|
|
|
for (;;)
|
|
{
|
|
for (;;)
|
|
{
|
|
if (p >= lim)
|
|
return p - data;
|
|
p += 4;
|
|
/* if ((v & 0xFC000003) == 0x48000001) */
|
|
if ((p[-4] & 0xFC) == 0x48 && (p[-1] & 3) == 1)
|
|
break;
|
|
}
|
|
{
|
|
UInt32 v = GetBe32(p - 4);
|
|
if (encoding)
|
|
v += ip + (UInt32)(p - data);
|
|
else
|
|
v -= ip + (UInt32)(p - data);
|
|
v &= 0x03FFFFFF;
|
|
v |= 0x48000000;
|
|
SetBe32(p - 4, v);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
SizeT SPARC_Convert(Byte *data, SizeT size, UInt32 ip, int encoding)
|
|
{
|
|
Byte *p;
|
|
const Byte *lim;
|
|
size &= ~(size_t)3;
|
|
ip -= 4;
|
|
p = data;
|
|
lim = data + size;
|
|
|
|
for (;;)
|
|
{
|
|
for (;;)
|
|
{
|
|
if (p >= lim)
|
|
return p - data;
|
|
/*
|
|
v = GetBe32(p);
|
|
p += 4;
|
|
m = v + ((UInt32)5 << 29);
|
|
m ^= (UInt32)7 << 29;
|
|
m += (UInt32)1 << 22;
|
|
if ((m & ((UInt32)0x1FF << 23)) == 0)
|
|
break;
|
|
*/
|
|
p += 4;
|
|
if ((p[-4] == 0x40 && (p[-3] & 0xC0) == 0) ||
|
|
(p[-4] == 0x7F && (p[-3] >= 0xC0)))
|
|
break;
|
|
}
|
|
{
|
|
UInt32 v = GetBe32(p - 4);
|
|
v <<= 2;
|
|
if (encoding)
|
|
v += ip + (UInt32)(p - data);
|
|
else
|
|
v -= ip + (UInt32)(p - data);
|
|
|
|
v &= 0x01FFFFFF;
|
|
v -= (UInt32)1 << 24;
|
|
v ^= 0xFF000000;
|
|
v >>= 2;
|
|
v |= 0x40000000;
|
|
SetBe32(p - 4, v);
|
|
}
|
|
}
|
|
}
|