diff options
| author | Mounir IDRASSI <mounir.idrassi@idrix.fr> | 2013-06-22 16:16:13 +0200 |
|---|---|---|
| committer | Mounir IDRASSI <mounir.idrassi@idrix.fr> | 2014-11-08 23:18:07 +0100 |
| commit | c606f0866c3a2a5db3ef9bc41738ef33eb9612a9 (patch) | |
| tree | 5847c644cdfff3c1dd55b88b565448087ae89f11 /src/Boot/Windows/Platform.cpp | |
| download | VeraCrypt-c606f0866c3a2a5db3ef9bc41738ef33eb9612a9.tar.gz VeraCrypt-c606f0866c3a2a5db3ef9bc41738ef33eb9612a9.zip | |
Add original TrueCrypt 7.1a sources
Diffstat (limited to 'src/Boot/Windows/Platform.cpp')
| -rw-r--r-- | src/Boot/Windows/Platform.cpp | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/src/Boot/Windows/Platform.cpp b/src/Boot/Windows/Platform.cpp new file mode 100644 index 00000000..7894bf02 --- /dev/null +++ b/src/Boot/Windows/Platform.cpp @@ -0,0 +1,226 @@ +/*
+ Copyright (c) 2008 TrueCrypt Developers Association. All rights reserved.
+
+ Governed by the TrueCrypt License 3.0 the full text of which is contained in
+ the file License.txt included in TrueCrypt binary and source code distribution
+ packages.
+*/
+
+#include "Platform.h"
+#include "BootConsoleIo.h"
+
+
+uint64 operator+ (const uint64 &a, const uint64 &b)
+{
+ int carry = 0;
+ uint64 r;
+
+ r.LowPart = a.LowPart + b.LowPart;
+ __asm
+ {
+ jnc nocarry
+ mov carry, 1
+ nocarry:
+ }
+
+ r.HighPart = a.HighPart + b.HighPart + carry;
+
+ return r;
+}
+
+uint64 operator+ (const uint64 &a, uint32 b)
+{
+ uint64 b64;
+ b64.HighPart = 0;
+ b64.LowPart = b;
+ return a + b64;
+}
+
+uint64 &operator+= (uint64 &a, const uint64 &b)
+{
+ return a = a + b;
+}
+
+uint64 operator- (const uint64 &a, const uint64 &b)
+{
+ int carry = 0;
+ uint64 r;
+
+ r.LowPart = a.LowPart - b.LowPart;
+ __asm
+ {
+ jnc nocarry
+ mov carry, 1
+ nocarry:
+ }
+
+ r.HighPart = a.HighPart - b.HighPart - carry;
+
+ return r;
+}
+
+uint64 operator- (const uint64 &a, uint32 b)
+{
+ uint64 b64;
+ b64.HighPart = 0;
+ b64.LowPart = b;
+ return a - b64;
+}
+
+uint64 &operator-= (uint64 &a, const uint64 &b)
+{
+ return a = a - b;
+}
+
+uint64 operator>> (const uint64 &a, int shiftCount)
+{
+ uint64 r = a;
+
+ while (shiftCount--)
+ {
+ r.LowPart >>= 1;
+
+ if ((byte) r.HighPart & 1)
+ r.LowPart |= 0x80000000UL;
+
+ r.HighPart >>= 1;
+ }
+
+ return r;
+}
+
+uint64 operator<< (const uint64 &a, int shiftCount)
+{
+ uint64 r = a;
+
+ while (shiftCount--)
+ r += r;
+
+ return r;
+}
+
+uint64 &operator++ (uint64 &a)
+{
+ uint64 b;
+ b.HighPart = 0;
+ b.LowPart = 1;
+
+ return a += b;
+}
+
+bool operator== (const uint64 &a, const uint64 &b)
+{
+ return a.HighPart == b.HighPart && a.LowPart == b.LowPart;
+}
+
+bool operator> (const uint64 &a, const uint64 &b)
+{
+ return (a.HighPart > b.HighPart) || (a.HighPart == b.HighPart && a.LowPart > b.LowPart);
+}
+
+bool operator< (const uint64 &a, const uint64 &b)
+{
+ return (a.HighPart < b.HighPart) || (a.HighPart == b.HighPart && a.LowPart < b.LowPart);
+}
+
+bool operator>= (const uint64 &a, const uint64 &b)
+{
+ return a > b || a == b;
+}
+
+bool operator<= (const uint64 &a, const uint64 &b)
+{
+ return a < b || a == b;
+}
+
+bool TestInt64 ()
+{
+ uint64 a, b, c;
+ a.HighPart = 0x00112233UL;
+ a.LowPart = 0xabcd1234UL;
+
+ b.HighPart = 0x00ffeeddUL;
+ b.LowPart = 0xffffFFFFUL;
+
+ a += b;
+ a -= b;
+
+ ++a;
+
+ b = b + (uint32) 1UL;
+
+ c = (a - ((a + b) >> 32) - (uint32) 1UL);
+ if (c.HighPart != 0x112233UL || c.LowPart != 0xAABC0123UL)
+ return false;
+
+ c = c << 9;
+ return c.HighPart == 0x22446755UL && c.LowPart == 0x78024600UL;
+}
+
+
+void CopyMemory (void *source, uint16 destSegment, uint16 destOffset, uint16 blockSize)
+{
+ __asm
+ {
+ push es
+ mov si, ss:source
+ mov es, ss:destSegment
+ mov di, ss:destOffset
+ mov cx, ss:blockSize
+ cld
+ rep movsb
+ pop es
+ }
+}
+
+
+void CopyMemory (uint16 sourceSegment, uint16 sourceOffset, void *destination, uint16 blockSize)
+{
+ __asm
+ {
+ push ds
+ push es
+ mov ax, ds
+ mov es, ax
+ mov di, ss:destination
+ mov si, ss:sourceOffset
+ mov cx, ss:blockSize
+ mov ds, ss:sourceSegment
+ cld
+ rep movsb
+ pop es
+ pop ds
+ }
+}
+
+
+void EraseMemory (void *memory, int size)
+{
+ memset (memory, 0, size);
+}
+
+
+uint32 GetLinearAddress (uint16 segment, uint16 offset)
+{
+ return (uint32 (segment) << 4) + offset;
+}
+
+
+bool RegionsIntersect (const uint64 &start1, uint32 length1, const uint64 &start2, const uint64 &end2)
+{
+ uint64 end1 = start1 + length1 - 1UL;
+ uint64 intersectEnd = (end1 <= end2) ? end1 : end2;
+
+ uint64 intersectStart = (start1 >= start2) ? start1 : start2;
+ if (intersectStart > intersectEnd)
+ return false;
+
+ return (intersectEnd + 1UL - intersectStart).LowPart != 0;
+}
+
+
+void ThrowFatalException (int line)
+{
+ PrintChar ('#'); Print (line);
+ while (1);
+}
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