[turner] 19927: Separated math and memory functions into their own files to limit the amount of object code that is linked into the application/lib.
6 Dec
2005
6 Dec
'05
3:02 a.m.
Separated math and memory functions into their own files to limit the
amount of object code that is linked into the application/lib.
Added: trunk/reactos/lib/rtl/i386/alldiv_asm.s
Added: trunk/reactos/lib/rtl/i386/alldvrm_asm.s
Added: trunk/reactos/lib/rtl/i386/allmul_asm.s
Added: trunk/reactos/lib/rtl/i386/allrem_asm.s
Added: trunk/reactos/lib/rtl/i386/allshl_asm.s
Added: trunk/reactos/lib/rtl/i386/allshr_asm.s
Added: trunk/reactos/lib/rtl/i386/atan_asm.s
Added: trunk/reactos/lib/rtl/i386/aulldvrm_asm.s
Added: trunk/reactos/lib/rtl/i386/aullrem_asm.s
Added: trunk/reactos/lib/rtl/i386/ceil_asm.s
Added: trunk/reactos/lib/rtl/i386/comparememory_asm.s
Added: trunk/reactos/lib/rtl/i386/comparememory_ulong_asm.s
Added: trunk/reactos/lib/rtl/i386/cos_asm.s
Added: trunk/reactos/lib/rtl/i386/fabs_asm.s
Added: trunk/reactos/lib/rtl/i386/fillmemory_asm.s
Added: trunk/reactos/lib/rtl/i386/fillmemory_ulong_asm.s
Added: trunk/reactos/lib/rtl/i386/floor_asm.s
Added: trunk/reactos/lib/rtl/i386/ftol_asm.s
Added: trunk/reactos/lib/rtl/i386/log_asm.s
Deleted: trunk/reactos/lib/rtl/i386/math_asm.S
Deleted: trunk/reactos/lib/rtl/i386/mem_asm.S
Added: trunk/reactos/lib/rtl/i386/pow_asm.s
Added: trunk/reactos/lib/rtl/i386/prefetchmemory_asm.s
Added: trunk/reactos/lib/rtl/i386/sin_asm.s
Added: trunk/reactos/lib/rtl/i386/sqrt_asm.s
Added: trunk/reactos/lib/rtl/i386/tan_asm.s
Added: trunk/reactos/lib/rtl/i386/uallshr_asm.s
Added: trunk/reactos/lib/rtl/i386/zeromemory_asm.s
Modified: trunk/reactos/lib/rtl/rtl.xml
_____
Added: trunk/reactos/lib/rtl/i386/alldiv_asm.s
--- trunk/reactos/lib/rtl/i386/alldiv_asm.s 2005-12-06 01:53:03 UTC
(rev 19926)
+++ trunk/reactos/lib/rtl/i386/alldiv_asm.s 2005-12-06 03:02:00 UTC
(rev 19927)
@@ -0,0 +1,228 @@
+/*
+ * COPYRIGHT: See COPYING in the top level directory
+ * PROJECT: ReactOS kernel
+ * PURPOSE: Run-Time Library
+ * FILE: lib/rtl/i386/math.S
+ * PROGRAMER: Alex Ionescu (alex(a)relsoft.net)
+ * Eric Kohl (ekohl(a)rz-online.de)
+ *
+ * Copyright (C) 2002 Michael Ringgaard.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
the
+ * documentation and/or other materials provided with the
distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ * may be used to endorse or promote products derived from this
software
+ * without specific prior written permission.
+
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
GOODS
+ * OR SERVICES// LOSS OF USE, DATA, OR PROFITS// OR BUSINESS
INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
OF
+ * SUCH DAMAGE.
+ */
+
+ .globl __alldiv
+
+ /* DATA
********************************************************************/
+
+fzero:
+ .long 0 // Floating point zero
+ .long 0 // Floating point zero
+
+__fltused:
+ .long 0x9875
+
+.intel_syntax noprefix
+
+/* FUNCTIONS
***************************************************************/
+
+//
+// lldiv - signed long divide
+//
+// Purpose:
+// Does a signed long divide of the arguments. Arguments are
+// not changed.
+//
+// Entry:
+// Arguments are passed on the stack:
+// 1st pushed: divisor (QWORD)
+// 2nd pushed: dividend (QWORD)
+//
+// Exit:
+// EDX:EAX contains the quotient (dividend/divisor)
+// NOTE: this routine removes the parameters from the stack.
+//
+// Uses:
+// ECX
+//
+
+__alldiv:
+
+ push edi
+ push esi
+ push ebx
+
+// Set up the local stack and save the index registers. When this is
done
+// the stack frame will look as follows (assuming that the expression
a/b will
+// generate a call to lldiv(a, b)):
+//
+// -----------------
+// | |
+// |---------------|
+// | |
+// |--divisor (b)--|
+// | |
+// |---------------|
+// | |
+// |--dividend (a)-|
+// | |
+// |---------------|
+// | return addr** |
+// |---------------|
+// | EDI |
+// |---------------|
+// | ESI |
+// |---------------|
+// ESP---->| EBX |
+// -----------------
+//
+
+#define DVNDLO [esp + 16] // stack address of dividend (a)
+#define DVNDHI [esp + 20] // stack address of dividend (a)
+#define DVSRLO [esp + 24] // stack address of divisor (b)
+#define DVSRHI [esp + 28] // stack address of divisor (b)
+
+// Determine sign of the result (edi = 0 if result is positive,
non-zero
+// otherwise) and make operands positive.
+
+ xor edi,edi // result sign assumed positive
+
+ mov eax,DVNDHI // hi word of a
+ or eax,eax // test to see if signed
+ jge short L1 // skip rest if a is already positive
+ inc edi // complement result sign flag
+ mov edx,DVNDLO // lo word of a
+ neg eax // make a positive
+ neg edx
+ sbb eax,0
+ mov DVNDHI,eax // save positive value
+ mov DVNDLO,edx
+L1:
+ mov eax,DVSRHI // hi word of b
+ or eax,eax // test to see if signed
+ jge short L2 // skip rest if b is already positive
+ inc edi // complement the result sign flag
+ mov edx,DVSRLO // lo word of a
+ neg eax // make b positive
+ neg edx
+ sbb eax,0
+ mov DVSRHI,eax // save positive value
+ mov DVSRLO,edx
+L2:
+
+//
+// Now do the divide. First look to see if the divisor is less than
4194304K.
+// If so, then we can use a simple algorithm with word divides,
otherwise
+// things get a little more complex.
+//
+// NOTE - eax currently contains the high order word of DVSR
+//
+
+ or eax,eax // check to see if divisor < 4194304K
+ jnz short L3 // nope, gotta do this the hard way
+ mov ecx,DVSRLO // load divisor
+ mov eax,DVNDHI // load high word of dividend
+ xor edx,edx
+ div ecx // eax <- high order bits of quotient
+ mov ebx,eax // save high bits of quotient
+ mov eax,DVNDLO // edx:eax <- remainder:lo word of dividend
+ div ecx // eax <- low order bits of quotient
+ mov edx,ebx // edx:eax <- quotient
+ jmp short L4 // set sign, restore stack and return
+
+//
+// Here we do it the hard way. Remember, eax contains the high word of
DVSR
+//
+
+L3:
+ mov ebx,eax // ebx:ecx <- divisor
+ mov ecx,DVSRLO
+ mov edx,DVNDHI // edx:eax <- dividend
+ mov eax,DVNDLO
+L5:
+ shr ebx,1 // shift divisor right one bit
+ rcr ecx,1
+ shr edx,1 // shift dividend right one bit
+ rcr eax,1
+ or ebx,ebx
+ jnz short L5 // loop until divisor < 4194304K
+ div ecx // now divide, ignore remainder
+ mov esi,eax // save quotient
+
+//
+// We may be off by one, so to check, we will multiply the quotient
+// by the divisor and check the result against the orignal dividend
+// Note that we must also check for overflow, which can occur if the
+// dividend is close to 2**64 and the quotient is off by 1.
+//
+
+ mul dword ptr DVSRHI // QUOT * DVSRHI
+ mov ecx,eax
+ mov eax,DVSRLO
+ mul esi // QUOT * DVSRLO
+ add edx,ecx // EDX:EAX = QUOT * DVSR
+ jc short L6 // carry means Quotient is off by 1
+
+//
+// do long compare here between original dividend and the result of the
+// multiply in edx:eax. If original is larger or equal, we are ok,
otherwise
+// subtract one (1) from the quotient.
+//
+
+ cmp edx,DVNDHI // compare hi words of result and original
+ ja short L6 // if result > original, do subtract
+ jb short L7 // if result < original, we are ok
+ cmp eax,DVNDLO // hi words are equal, compare lo words
+ jbe short L7 // if less or equal we are ok, else
subtract
+L6:
+ dec esi // subtract 1 from quotient
+L7:
+ xor edx,edx // edx:eax <- quotient
+ mov eax,esi
+
+//
+// Just the cleanup left to do. edx:eax contains the quotient. Set
the sign
+// according to the save value, cleanup the stack, and return.
+//
+
+L4:
+ dec edi // check to see if result is negative
+ jnz short L8 // if EDI == 0, result should be
negative
+ neg edx // otherwise, negate the result
+ neg eax
+ sbb edx,0
+
+//
+// Restore the saved registers and return.
+//
+
+L8:
+ pop ebx
+ pop esi
+ pop edi
+
+ ret 16
_____
Added: trunk/reactos/lib/rtl/i386/alldvrm_asm.s
--- trunk/reactos/lib/rtl/i386/alldvrm_asm.s 2005-12-06 01:53:03 UTC
(rev 19926)
+++ trunk/reactos/lib/rtl/i386/alldvrm_asm.s 2005-12-06 03:02:00 UTC
(rev 19927)
@@ -0,0 +1,256 @@
+/*
+ * COPYRIGHT: See COPYING in the top level directory
+ * PROJECT: ReactOS kernel
+ * PURPOSE: Run-Time Library
+ * FILE: lib/rtl/i386/alldvrm.S
+ * PROGRAMER: Alex Ionescu (alex(a)relsoft.net)
+ * Eric Kohl (ekohl(a)rz-online.de)
+ *
+ * Copyright (C) 2002 Michael Ringgaard.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
the
+ * documentation and/or other materials provided with the
distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ * may be used to endorse or promote products derived from this
software
+ * without specific prior written permission.
+
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
GOODS
+ * OR SERVICES// LOSS OF USE, DATA, OR PROFITS// OR BUSINESS
INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
OF
+ * SUCH DAMAGE.
+ */
+
+.globl __alldvrm
+
+ /* DATA
********************************************************************/
+
+fzero:
+ .long 0 // Floating point zero
+ .long 0 // Floating point zero
+
+__fltused:
+ .long 0x9875
+
+.intel_syntax noprefix
+
+/* FUNCTIONS
***************************************************************/
+
+__alldvrm:
+ push edi
+ push esi
+ push ebp
+
+// Set up the local stack and save the index registers. When this is
done
+// the stack frame will look as follows (assuming that the expression
a/b will
+// generate a call to alldvrm(a, b)):
+//
+// -----------------
+// | |
+// |---------------|
+// | |
+// |--divisor (b)--|
+// | |
+// |---------------|
+// | |
+// |--dividend (a)-|
+// | |
+// |---------------|
+// | return addr** |
+// |---------------|
+// | EDI |
+// |---------------|
+// | ESI |
+// |---------------|
+// ESP---->| EBP |
+// -----------------
+//
+
+#undef DVNDLO
+#undef DVNDHI
+#undef DVSRLO
+#undef DVSRHI
+#define DVNDLO [esp + 16] // stack address of dividend (a)
+#define DVNDHI [esp + 20] // stack address of dividend (a)
+#define DVSRLO [esp + 24] // stack address of divisor (b)
+#define DVSRHI [esp + 28] // stack address of divisor (b)
+
+// Determine sign of the quotient (edi = 0 if result is positive,
non-zero
+// otherwise) and make operands positive.
+// Sign of the remainder is kept in ebp.
+
+ xor edi,edi // result sign assumed positive
+ xor ebp,ebp // result sign assumed positive
+
+ mov eax,DVNDHI // hi word of a
+ or eax,eax // test to see if signed
+ jge short ....L1 // skip rest if a is already
positive
+ inc edi // complement result sign flag
+ inc ebp // complement result sign flag
+ mov edx,DVNDLO // lo word of a
+ neg eax // make a positive
+ neg edx
+ sbb eax,0
+ mov DVNDHI,eax // save positive value
+ mov DVNDLO,edx
+....L1:
+ mov eax,DVSRHI // hi word of b
+ or eax,eax // test to see if signed
+ jge short ....L2 // skip rest if b is already
positive
+ inc edi // complement the result sign flag
+ mov edx,DVSRLO // lo word of a
+ neg eax // make b positive
+ neg edx
+ sbb eax,0
+ mov DVSRHI,eax // save positive value
+ mov DVSRLO,edx
+....L2:
+
+//
+// Now do the divide. First look to see if the divisor is less than
4194304K.
+// If so, then we can use a simple algorithm with word divides,
otherwise
+// things get a little more complex.
+//
+// NOTE - eax currently contains the high order word of DVSR
+//
+
+ or eax,eax // check to see if divisor < 4194304K
+ jnz short ....L3 // nope, gotta do this the hard way
+ mov ecx,DVSRLO // load divisor
+ mov eax,DVNDHI // load high word of dividend
+ xor edx,edx
+ div ecx // eax <- high order bits of quotient
+ mov ebx,eax // save high bits of quotient
+ mov eax,DVNDLO // edx:eax <- remainder:lo word of dividend
+ div ecx // eax <- low order bits of quotient
+ mov esi,eax // ebx:esi <- quotient
+//
+// Now we need to do a multiply so that we can compute the remainder.
+//
+ mov eax,ebx // set up high word of quotient
+ mul dword ptr DVSRLO // HIWORD(QUOT) * DVSR
+ mov ecx,eax // save the result in ecx
+ mov eax,esi // set up low word of quotient
+ mul dword ptr DVSRLO // LOWORD(QUOT) * DVSR
+ add edx,ecx // EDX:EAX = QUOT * DVSR
+ jmp short ....L4 // complete remainder calculation
+
+//
+// Here we do it the hard way. Remember, eax contains the high word of
DVSR
+//
+
+....L3:
+ mov ebx,eax // ebx:ecx <- divisor
+ mov ecx,DVSRLO
+ mov edx,DVNDHI // edx:eax <- dividend
+ mov eax,DVNDLO
+....L5:
+ shr ebx,1 // shift divisor right one bit
+ rcr ecx,1
+ shr edx,1 // shift dividend right one bit
+ rcr eax,1
+ or ebx,ebx
+ jnz short ....L5 // loop until divisor < 4194304K
+ div ecx // now divide, ignore remainder
+ mov esi,eax // save quotient
+
+//
+// We may be off by one, so to check, we will multiply the quotient
+// by the divisor and check the result against the orignal dividend
+// Note that we must also check for overflow, which can occur if the
+// dividend is close to 2**64 and the quotient is off by 1.
+//
+
+ mul dword ptr DVSRHI // QUOT * DVSRHI
+ mov ecx,eax
+ mov eax,DVSRLO
+ mul esi // QUOT * DVSRLO
+ add edx,ecx // EDX:EAX = QUOT * DVSR
+ jc short ....L6 // carry means Quotient is off by 1
+
+//
+// do long compare here between original dividend and the result of the
+// multiply in edx:eax. If original is larger or equal, we are ok,
otherwise
+// subtract one (1) from the quotient.
+//
+
+ cmp edx,DVNDHI // compare hi words of result and original
+ ja short ....L6 // if result > original, do
subtract
+ jb short ....L7 // if result < original, we are ok
+ cmp eax,DVNDLO // hi words are equal, compare lo words
+ jbe short ....L7 // if less or equal we are ok, else
subtract
+....L6:
+ dec esi // subtract 1 from quotient
+ sub eax,DVSRLO // subtract divisor from result
+ sbb edx,DVSRHI
+....L7:
+ xor ebx,ebx // ebx:esi <- quotient
+
+....L4:
+//
+// Calculate remainder by subtracting the result from the original
dividend.
+// Since the result is already in a register, we will do the subtract
in the
+// opposite direction and negate the result if necessary.
+//
+
+ sub eax,DVNDLO // subtract dividend from result
+ sbb edx,DVNDHI
+
+//
+// Now check the result sign flag to see if the result is supposed to
be positive
+// or negative. It is currently negated (because we subtracted in the
'wrong'
+// direction), so if the sign flag is set we are done, otherwise we
must negate
+// the result to make it positive again.
+//
+
+ dec ebp // check result sign flag
+ jns short ....L9 // result is ok, set up the
quotient
+ neg edx // otherwise, negate the result
+ neg eax
+ sbb edx,0
+
+//
+// Now we need to get the quotient into edx:eax and the remainder into
ebx:ecx.
+//
+....L9:
+ mov ecx,edx
+ mov edx,ebx
+ mov ebx,ecx
+ mov ecx,eax
+ mov eax,esi
+
+//
+// Just the cleanup left to do. edx:eax contains the quotient. Set
the sign
+// according to the save value, cleanup the stack, and return.
+//
+
+ dec edi // check to see if result is negative
+ jnz short ....L8 // if EDI == 0, result should be
negative
+ neg edx // otherwise, negate the result
+ neg eax
+ sbb edx,0
+
+//
+// Restore the saved registers and return.
+//
+
+....L8:
+ pop ebp
+ pop esi
+ pop edi
+
+ ret 16
_____
Added: trunk/reactos/lib/rtl/i386/allmul_asm.s
--- trunk/reactos/lib/rtl/i386/allmul_asm.s 2005-12-06 01:53:03 UTC
(rev 19926)
+++ trunk/reactos/lib/rtl/i386/allmul_asm.s 2005-12-06 03:02:00 UTC
(rev 19927)
@@ -0,0 +1,125 @@
+/*
+ * COPYRIGHT: See COPYING in the top level directory
+ * PROJECT: ReactOS kernel
+ * PURPOSE: Run-Time Library
+ * FILE: lib/rtl/i386/allmul.S
+ * PROGRAMER: Alex Ionescu (alex(a)relsoft.net)
+ * Eric Kohl (ekohl(a)rz-online.de)
+ *
+ * Copyright (C) 2002 Michael Ringgaard.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
the
+ * documentation and/or other materials provided with the
distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ * may be used to endorse or promote products derived from this
software
+ * without specific prior written permission.
+
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
GOODS
+ * OR SERVICES// LOSS OF USE, DATA, OR PROFITS// OR BUSINESS
INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
OF
+ * SUCH DAMAGE.
+ */
+
+.globl __allmul
+
+ /* DATA
********************************************************************/
+
+fzero:
+ .long 0 // Floating point zero
+ .long 0 // Floating point zero
+
+__fltused:
+ .long 0x9875
+
+.intel_syntax noprefix
+
+/* FUNCTIONS
***************************************************************/
+
+//
+// llmul - long multiply routine
+//
+// Purpose:
+// Does a long multiply (same for signed/unsigned)
+// Parameters are not changed.
+//
+// Entry:
+// Parameters are passed on the stack:
+// 1st pushed: multiplier (QWORD)
+// 2nd pushed: multiplicand (QWORD)
+//
+// Exit:
+// EDX:EAX - product of multiplier and multiplicand
+// NOTE: parameters are removed from the stack
+//
+// Uses:
+// ECX
+//
+
+__allmul:
+
+#define ALO [esp + 4] // stack address of a
+#define AHI [esp + 8] // stack address of a
+#define BLO [esp + 12] // stack address of b
+#define BHI [esp + 16] // stack address of b
+
+//
+// AHI, BHI : upper 32 bits of A and B
+// ALO, BLO : lower 32 bits of A and B
+//
+// ALO * BLO
+// ALO * BHI
+// + BLO * AHI
+// ---------------------
+//
+
+ mov eax,AHI
+ mov ecx,BHI
+ or ecx,eax //test for both hiwords zero.
+ mov ecx,BLO
+ jnz short hard //both are zero, just mult ALO and BLO
+
+ mov eax,AHI
+ mul ecx
+
+ ret 16 // callee restores the stack
+
+hard:
+ push ebx
+
+// must redefine A and B since esp has been altered
+
+#define A2LO [esp + 4] // stack address of a
+#define A2HI [esp + 8] // stack address of a
+#define B2LO [esp + 12] // stack address of b
+#define B2HI [esp + 16] // stack address of b
+
+ mul ecx //eax has AHI, ecx has BLO, so AHI *
BLO
+ mov ebx,eax //save result
+
+ mov eax,A2LO
+ mul dword ptr B2HI //ALO * BHI
+ add ebx,eax //ebx = ((ALO * BHI) + (AHI * BLO))
+
+ mov eax,A2LO //ecx = BLO
+ mul ecx //so edx:eax = ALO*BLO
+ add edx,ebx //now edx has all the LO*HI stuff
+
+ pop ebx
+
+ ret 16 // callee restores the stack
+
_____
Added: trunk/reactos/lib/rtl/i386/allrem_asm.s
--- trunk/reactos/lib/rtl/i386/allrem_asm.s 2005-12-06 01:53:03 UTC
(rev 19926)
+++ trunk/reactos/lib/rtl/i386/allrem_asm.s 2005-12-06 03:02:00 UTC
(rev 19927)
@@ -0,0 +1,239 @@
+/*
+ * COPYRIGHT: See COPYING in the top level directory
+ * PROJECT: ReactOS kernel
+ * PURPOSE: Run-Time Library
+ * FILE: lib/rtl/i386/allrem.S
+ * PROGRAMER: Alex Ionescu (alex(a)relsoft.net)
+ * Eric Kohl (ekohl(a)rz-online.de)
+ *
+ * Copyright (C) 2002 Michael Ringgaard.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
the
+ * documentation and/or other materials provided with the
distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ * may be used to endorse or promote products derived from this
software
+ * without specific prior written permission.
+
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
GOODS
+ * OR SERVICES// LOSS OF USE, DATA, OR PROFITS// OR BUSINESS
INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
OF
+ * SUCH DAMAGE.
+ */
+
+.globl __allrem
+
+ /* DATA
********************************************************************/
+
+fzero:
+ .long 0 // Floating point zero
+ .long 0 // Floating point zero
+
+__fltused:
+ .long 0x9875
+
+.intel_syntax noprefix
+
+/* FUNCTIONS
***************************************************************/
+
+//
+// llrem - signed long remainder
+//
+// Purpose:
+// Does a signed long remainder of the arguments. Arguments are
+// not changed.
+//
+// Entry:
+// Arguments are passed on the stack:
+// 1st pushed: divisor (QWORD)
+// 2nd pushed: dividend (QWORD)
+//
+// Exit:
+// EDX:EAX contains the remainder (dividend%divisor)
+// NOTE: this routine removes the parameters from the stack.
+//
+// Uses:
+// ECX
+//
+
+__allrem :
+
+ push ebx
+ push edi
+
+// Set up the local stack and save the index registers. When this is
done
+// the stack frame will look as follows (assuming that the expression
a%b will
+// generate a call to lrem(a, b)):
+//
+// -----------------
+// | |
+// |---------------|
+// | |
+// |--divisor (b)--|
+// | |
+// |---------------|
+// | |
+// |--dividend (a)-|
+// | |
+// |---------------|
+// | return addr** |
+// |---------------|
+// | EBX |
+// |---------------|
+// ESP---->| EDI |
+// -----------------
+//
+
+#undef DVNDLO
+#undef DVNDHI
+#undef DVSRLO
+#undef DVSRHI
+#define DVNDLO [esp + 12] // stack address of dividend (a)
+#define DVNDHI [esp + 16] // stack address of dividend (a)
+#define DVSRLO [esp + 20] // stack address of divisor (b)
+#define DVSRHI [esp + 24] // stack address of divisor (b)
+
+// Determine sign of the result (edi = 0 if result is positive,
non-zero
+// otherwise) and make operands positive.
+
+ xor edi,edi // result sign assumed positive
+
+ mov eax,DVNDHI // hi word of a
+ or eax,eax // test to see if signed
+ jge short .L1 // skip rest if a is already positive
+ inc edi // complement result sign flag bit
+ mov edx,DVNDLO // lo word of a
+ neg eax // make a positive
+ neg edx
+ sbb eax,0
+ mov DVNDHI,eax // save positive value
+ mov DVNDLO,edx
+.L1:
+ mov eax,DVSRHI // hi word of b
+ or eax,eax // test to see if signed
+ jge short .L2 // skip rest if b is already positive
+ mov edx,DVSRLO // lo word of b
+ neg eax // make b positive
+ neg edx
+ sbb eax,0
+ mov DVSRHI,eax // save positive value
+ mov DVSRLO,edx
+.L2:
+
+//
+// Now do the divide. First look to see if the divisor is less than
4194304K.
+// If so, then we can use a simple algorithm with word divides,
otherwise
+// things get a little more complex.
+//
+// NOTE - eax currently contains the high order word of DVSR
+//
+
+ or eax,eax // check to see if divisor < 4194304K
+ jnz short .L3 // nope, gotta do this the hard way
+ mov ecx,DVSRLO // load divisor
+ mov eax,DVNDHI // load high word of dividend
+ xor edx,edx
+ div ecx // edx <- remainder
+ mov eax,DVNDLO // edx:eax <- remainder:lo word of dividend
+ div ecx // edx <- final remainder
+ mov eax,edx // edx:eax <- remainder
+ xor edx,edx
+ dec edi // check result sign flag
+ jns short .L4 // negate result, restore stack and
return
+ jmp short .L8 // result sign ok, restore stack and
return
+
+//
+// Here we do it the hard way. Remember, eax contains the high word of
DVSR
+//
+
+.L3:
+ mov ebx,eax // ebx:ecx <- divisor
+ mov ecx,DVSRLO
+ mov edx,DVNDHI // edx:eax <- dividend
+ mov eax,DVNDLO
+.L5:
+ shr ebx,1 // shift divisor right one bit
+ rcr ecx,1
+ shr edx,1 // shift dividend right one bit
+ rcr eax,1
+ or ebx,ebx
+ jnz short .L5 // loop until divisor < 4194304K
+ div ecx // now divide, ignore remainder
+
+//
+// We may be off by one, so to check, we will multiply the quotient
+// by the divisor and check the result against the orignal dividend
+// Note that we must also check for overflow, which can occur if the
+// dividend is close to 2**64 and the quotient is off by 1.
+//
+
+ mov ecx,eax // save a copy of quotient in ECX
+ mul dword ptr DVSRHI
+ xchg ecx,eax // save product, get quotient in EAX
+ mul dword ptr DVSRLO
+ add edx,ecx // EDX:EAX = QUOT * DVSR
+ jc short .L6 // carry means Quotient is off by 1
+
+//
+// do long compare here between original dividend and the result of the
+// multiply in edx:eax. If original is larger or equal, we are ok,
otherwise
+// subtract the original divisor from the result.
+//
+
+ cmp edx,DVNDHI // compare hi words of result and original
+ ja short .L6 // if result > original, do subtract
+ jb short .L7 // if result < original, we are ok
+ cmp eax,DVNDLO // hi words are equal, compare lo words
+ jbe short .L7 // if less or equal we are ok, else
subtract
+.L6:
+ sub eax,DVSRLO // subtract divisor from result
+ sbb edx,DVSRHI
+.L7:
+
+//
+// Calculate remainder by subtracting the result from the original
dividend.
+// Since the result is already in a register, we will do the subtract
in the
+// opposite direction and negate the result if necessary.
+//
+
+ sub eax,DVNDLO // subtract dividend from result
+ sbb edx,DVNDHI
+
+//
+// Now check the result sign flag to see if the result is supposed to
be positive
+// or negative. It is currently negated (because we subtracted in the
'wrong'
+// direction), so if the sign flag is set we are done, otherwise we
must negate
+// the result to make it positive again.
+//
+
+ dec edi // check result sign flag
+ jns short .L8 // result is ok, restore stack and
return
+.L4:
+ neg edx // otherwise, negate the result
+ neg eax
+ sbb edx,0
+
+//
+// Just the cleanup left to do. edx:eax contains the quotient.
+// Restore the saved registers and return.
+//
+
+.L8:
+ pop edi
+ pop ebx
+
+ ret 16
_____
Added: trunk/reactos/lib/rtl/i386/allshl_asm.s
--- trunk/reactos/lib/rtl/i386/allshl_asm.s 2005-12-06 01:53:03 UTC
(rev 19926)
+++ trunk/reactos/lib/rtl/i386/allshl_asm.s 2005-12-06 03:02:00 UTC
(rev 19927)
@@ -0,0 +1,104 @@
+/*
+ * COPYRIGHT: See COPYING in the top level directory
+ * PROJECT: ReactOS kernel
+ * PURPOSE: Run-Time Library
+ * FILE: lib/rtl/i386/allshl.S
+ * PROGRAMER: Alex Ionescu (alex(a)relsoft.net)
+ * Eric Kohl (ekohl(a)rz-online.de)
+ *
+ * Copyright (C) 2002 Michael Ringgaard.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
the
+ * documentation and/or other materials provided with the
distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ * may be used to endorse or promote products derived from this
software
+ * without specific prior written permission.
+
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
GOODS
+ * OR SERVICES// LOSS OF USE, DATA, OR PROFITS// OR BUSINESS
INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
OF
+ * SUCH DAMAGE.
+ */
+
+.globl __allshl
+
+ /* DATA
********************************************************************/
+
+fzero:
+ .long 0 // Floating point zero
+ .long 0 // Floating point zero
+
+__fltused:
+ .long 0x9875
+
+.intel_syntax noprefix
+
+/* FUNCTIONS
***************************************************************/
+
+//
+// llshl - long shift left
+//
+// Purpose:
+// Does a Long Shift Left (signed and unsigned are identical)
+// Shifts a long left any number of bits.
+//
+// Entry:
+// EDX:EAX - long value to be shifted
+// CL - number of bits to shift by
+//
+// Exit:
+// EDX:EAX - shifted value
+//
+// Uses:
+// CL is destroyed.
+//
+
+__allshl:
+
+//
+// Handle shifts of 64 or more bits (all get 0)
+//
+ cmp cl, 64
+ jae short RETZERO
+
+//
+// Handle shifts of between 0 and 31 bits
+//
+ cmp cl, 32
+ jae short MORE32
+ shld edx,eax,cl
+ shl eax,cl
+ ret
+
+//
+// Handle shifts of between 32 and 63 bits
+//
+MORE32:
+ mov edx,eax
+ xor eax,eax
+ and cl,31
+ shl edx,cl
+ ret
+
+//
+// return 0 in edx:eax
+//
+RETZERO:
+ xor eax,eax
+ xor edx,edx
+ ret
_____
Added: trunk/reactos/lib/rtl/i386/allshr_asm.s
--- trunk/reactos/lib/rtl/i386/allshr_asm.s 2005-12-06 01:53:03 UTC
(rev 19926)
+++ trunk/reactos/lib/rtl/i386/allshr_asm.s 2005-12-06 03:02:00 UTC
(rev 19927)
@@ -0,0 +1,189 @@
+/*
+ * COPYRIGHT: See COPYING in the top level directory
+ * PROJECT: ReactOS kernel
+ * PURPOSE: Run-Time Library
+ * FILE: lib/rtl/i386/aulldiv.S
+ * PROGRAMER: Alex Ionescu (alex(a)relsoft.net)
+ * Eric Kohl (ekohl(a)rz-online.de)
+ *
+ * Copyright (C) 2002 Michael Ringgaard.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
[truncated at 1000 lines; 3562 more skipped]
6962
days inactive
6962
days old
0 comments
1 participants
participants (1)
-
turner＠svn.reactos.com