Windows: reduce size of MBR bootloader by removing unused functions in each build type.

This commit is contained in:
Mounir IDRASSI 2017-07-21 15:21:13 +02:00
parent 0fb2befe3a
commit ff871511af
No known key found for this signature in database
GPG Key ID: DD0C382D5FCFB8FC
8 changed files with 36 additions and 77 deletions

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@ -19,17 +19,19 @@
static int ScreenOutputDisabled = 0;
#if defined(TC_TRACE_INT13) || !defined(TC_WINDOWS_BOOT_RESCUE_DISK_MODE)
void DisableScreenOutput ()
{
++ScreenOutputDisabled;
}
#endif
#ifdef TC_TRACE_INT13
void EnableScreenOutput ()
{
--ScreenOutputDisabled;
}
#endif
void PrintChar (char c)
{

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@ -157,6 +157,7 @@ BiosResult ReadWriteSectors (bool write, uint16 bufferSegment, uint16 bufferOffs
return result;
}
#ifdef TC_WINDOWS_BOOT_RESCUE_DISK_MODE
BiosResult ReadWriteSectors (bool write, byte *buffer, byte drive, const ChsAddress &chs, byte sectorCount, bool silent)
{
@ -165,18 +166,19 @@ BiosResult ReadWriteSectors (bool write, byte *buffer, byte drive, const ChsAddr
return ReadWriteSectors (write, codeSeg, (uint16) buffer, drive, chs, sectorCount, silent);
}
BiosResult ReadSectors (byte *buffer, byte drive, const ChsAddress &chs, byte sectorCount, bool silent)
{
return ReadWriteSectors (false, buffer, drive, chs, sectorCount, silent);
}
#if 0
BiosResult WriteSectors (byte *buffer, byte drive, const ChsAddress &chs, byte sectorCount, bool silent)
{
return ReadWriteSectors (true, buffer, drive, chs, sectorCount, silent);
}
#endif
#endif
static BiosResult ReadWriteSectors (bool write, BiosLbaPacket &dapPacket, byte drive, const uint64 &sector, uint16 sectorCount, bool silent)
{

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@ -121,6 +121,7 @@ unsigned __int32 GetCrc32 (unsigned char *data, int length)
return r ^ 0xFFFFFFFFUL;
}
#if 0
BOOL crc32_selftests ()
{
unsigned __int8 testData[32];
@ -131,5 +132,6 @@ BOOL crc32_selftests ()
return GetCrc32 (testData, sizeof (testData)) == 0x91267E8AUL;
}
#endif
#endif // TC_MINIMIZE_CODE_SIZE

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@ -393,17 +393,13 @@ const wchar_t *CipherGetName (int cipherId)
Cipher* pCipher = CipherGet (cipherId);
return pCipher? pCipher -> Name : L"";
}
#endif
int CipherGetBlockSize (int cipherId)
{
#ifdef TC_WINDOWS_BOOT
return CipherGet (cipherId) -> BlockSize;
#else
Cipher* pCipher = CipherGet (cipherId);
return pCipher? pCipher -> BlockSize : 0;
#endif
}
#endif
int CipherGetKeySize (int cipherId)
{
@ -451,6 +447,7 @@ int EAGetFirst ()
return 1;
}
#ifndef TC_WINDOWS_BOOT
// Returns number of EAs
int EAGetCount (void)
{
@ -462,6 +459,7 @@ int EAGetCount (void)
}
return count;
}
#endif
int EAGetNext (int previousEA)
{
@ -593,6 +591,8 @@ int EAGetKeySize (int ea)
}
#ifndef TC_WINDOWS_BOOT
// Returns the first mode of operation of EA
int EAGetFirstMode (int ea)
{
@ -612,9 +612,6 @@ int EAGetNextMode (int ea, int previousModeId)
return 0;
}
#ifndef TC_WINDOWS_BOOT
// Returns the name of the mode of operation of the whole EA
wchar_t *EAGetModeName (int ea, int mode, BOOL capitalLetters)
{
@ -645,38 +642,7 @@ int EAGetKeyScheduleSize (int ea)
return size;
}
// Returns the largest key size needed by an EA for the specified mode of operation
int EAGetLargestKeyForMode (int mode)
{
int ea, key = 0;
for (ea = EAGetFirst (); ea != 0; ea = EAGetNext (ea))
{
if (!EAIsModeSupported (ea, mode))
continue;
if (EAGetKeySize (ea) >= key)
key = EAGetKeySize (ea);
}
return key;
}
// Returns the largest key needed by any EA for any mode
int EAGetLargestKey ()
{
int ea, key = 0;
for (ea = EAGetFirst (); ea != 0; ea = EAGetNext (ea))
{
if (EAGetKeySize (ea) >= key)
key = EAGetKeySize (ea);
}
return key;
}
#ifndef TC_WINDOWS_BOOT
// Returns number of ciphers in EA
int EAGetCipherCount (int ea)
@ -687,6 +653,7 @@ int EAGetCipherCount (int ea)
return i - 1;
}
#endif
int EAGetFirstCipher (int ea)
{
@ -732,18 +699,16 @@ int EAGetPreviousCipher (int ea, int previousCipherId)
return 0;
}
#ifndef TC_WINDOWS_BOOT
int EAIsFormatEnabled (int ea)
{
return EncryptionAlgorithms[ea].FormatEnabled;
}
#ifndef TC_WINDOWS_BOOT
int EAIsMbrSysEncEnabled (int ea)
{
return EncryptionAlgorithms[ea].MbrSysEncEnabled;
}
#endif
// Returns TRUE if the mode of operation is supported for the encryption algorithm
BOOL EAIsModeSupported (int ea, int testedMode)
@ -758,7 +723,6 @@ BOOL EAIsModeSupported (int ea, int testedMode)
return FALSE;
}
#ifndef TC_WINDOWS_BOOT
Hash *HashGet (int id)
{
int i;
@ -810,6 +774,22 @@ BOOL HashForSystemEncryption (int hashId)
}
// Returns the largest key size needed by an EA for the specified mode of operation
int EAGetLargestKeyForMode (int mode)
{
int ea, key = 0;
for (ea = EAGetFirst (); ea != 0; ea = EAGetNext (ea))
{
if (!EAIsModeSupported (ea, mode))
continue;
if (EAGetKeySize (ea) >= key)
key = EAGetKeySize (ea);
}
return key;
}
// Returns the maximum number of bytes necessary to be generated by the PBKDF2 (PKCS #5)
int GetMaxPkcs5OutSize (void)
{

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@ -354,8 +354,8 @@ int EAGetFirstCipher (int ea);
int EAGetLastCipher (int ea);
int EAGetNextCipher (int ea, int previousCipherId);
int EAGetPreviousCipher (int ea, int previousCipherId);
int EAIsFormatEnabled (int ea);
#ifndef TC_WINDOWS_BOOT
int EAIsFormatEnabled (int ea);
int EAIsMbrSysEncEnabled (int ea);
#endif
BOOL EAIsModeSupported (int ea, int testedMode);

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@ -43,17 +43,3 @@ uint64 MirrorBytes64 (uint64 x)
}
#endif
void
LongReverse (unsigned __int32 *buffer, unsigned byteCount)
{
unsigned __int32 value;
byteCount /= sizeof (unsigned __int32);
while (byteCount--)
{
value = *buffer;
value = ((value & 0xFF00FF00L) >> 8) | \
((value & 0x00FF00FFL) << 8);
*buffer++ = (value << 16) | (value >> 16);
}
}

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@ -139,8 +139,7 @@ unsigned __int16 MirrorBytes16 (unsigned __int16 x);
unsigned __int32 MirrorBytes32 (unsigned __int32 x);
#ifndef TC_NO_COMPILER_INT64
uint64 MirrorBytes64 (uint64 x);
#endif
void LongReverse ( unsigned __int32 *buffer , unsigned byteCount );
#endif
#if defined(__cplusplus)
}

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@ -36,18 +36,6 @@
#include "Pkcs5.h"
#include "Crypto.h"
void hmac_truncate
(
char *d1, /* data to be truncated */
char *d2, /* truncated data */
int len /* length in bytes to keep */
)
{
int i;
for (i = 0; i < len; i++)
d2[i] = d1[i];
}
#if !defined(TC_WINDOWS_BOOT) || defined(TC_WINDOWS_BOOT_SHA2)
typedef struct hmac_sha256_ctx_struct