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Fixed MTP to work with TWRP

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awab228 2018-06-19 23:16:04 +02:00
commit f6dfaef42e
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176
arch/x86/math-emu/mul_Xsig.S Normal file
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/*---------------------------------------------------------------------------+
| mul_Xsig.S |
| |
| Multiply a 12 byte fixed point number by another fixed point number. |
| |
| Copyright (C) 1992,1994,1995 |
| W. Metzenthen, 22 Parker St, Ormond, Vic 3163, |
| Australia. E-mail billm@jacobi.maths.monash.edu.au |
| |
| Call from C as: |
| void mul32_Xsig(Xsig *x, unsigned b) |
| |
| void mul64_Xsig(Xsig *x, unsigned long long *b) |
| |
| void mul_Xsig_Xsig(Xsig *x, unsigned *b) |
| |
| The result is neither rounded nor normalized, and the ls bit or so may |
| be wrong. |
| |
+---------------------------------------------------------------------------*/
.file "mul_Xsig.S"
#include "fpu_emu.h"
.text
ENTRY(mul32_Xsig)
pushl %ebp
movl %esp,%ebp
subl $16,%esp
pushl %esi
movl PARAM1,%esi
movl PARAM2,%ecx
xor %eax,%eax
movl %eax,-4(%ebp)
movl %eax,-8(%ebp)
movl (%esi),%eax /* lsl of Xsig */
mull %ecx /* msl of b */
movl %edx,-12(%ebp)
movl 4(%esi),%eax /* midl of Xsig */
mull %ecx /* msl of b */
addl %eax,-12(%ebp)
adcl %edx,-8(%ebp)
adcl $0,-4(%ebp)
movl 8(%esi),%eax /* msl of Xsig */
mull %ecx /* msl of b */
addl %eax,-8(%ebp)
adcl %edx,-4(%ebp)
movl -12(%ebp),%eax
movl %eax,(%esi)
movl -8(%ebp),%eax
movl %eax,4(%esi)
movl -4(%ebp),%eax
movl %eax,8(%esi)
popl %esi
leave
ret
ENTRY(mul64_Xsig)
pushl %ebp
movl %esp,%ebp
subl $16,%esp
pushl %esi
movl PARAM1,%esi
movl PARAM2,%ecx
xor %eax,%eax
movl %eax,-4(%ebp)
movl %eax,-8(%ebp)
movl (%esi),%eax /* lsl of Xsig */
mull 4(%ecx) /* msl of b */
movl %edx,-12(%ebp)
movl 4(%esi),%eax /* midl of Xsig */
mull (%ecx) /* lsl of b */
addl %edx,-12(%ebp)
adcl $0,-8(%ebp)
adcl $0,-4(%ebp)
movl 4(%esi),%eax /* midl of Xsig */
mull 4(%ecx) /* msl of b */
addl %eax,-12(%ebp)
adcl %edx,-8(%ebp)
adcl $0,-4(%ebp)
movl 8(%esi),%eax /* msl of Xsig */
mull (%ecx) /* lsl of b */
addl %eax,-12(%ebp)
adcl %edx,-8(%ebp)
adcl $0,-4(%ebp)
movl 8(%esi),%eax /* msl of Xsig */
mull 4(%ecx) /* msl of b */
addl %eax,-8(%ebp)
adcl %edx,-4(%ebp)
movl -12(%ebp),%eax
movl %eax,(%esi)
movl -8(%ebp),%eax
movl %eax,4(%esi)
movl -4(%ebp),%eax
movl %eax,8(%esi)
popl %esi
leave
ret
ENTRY(mul_Xsig_Xsig)
pushl %ebp
movl %esp,%ebp
subl $16,%esp
pushl %esi
movl PARAM1,%esi
movl PARAM2,%ecx
xor %eax,%eax
movl %eax,-4(%ebp)
movl %eax,-8(%ebp)
movl (%esi),%eax /* lsl of Xsig */
mull 8(%ecx) /* msl of b */
movl %edx,-12(%ebp)
movl 4(%esi),%eax /* midl of Xsig */
mull 4(%ecx) /* midl of b */
addl %edx,-12(%ebp)
adcl $0,-8(%ebp)
adcl $0,-4(%ebp)
movl 8(%esi),%eax /* msl of Xsig */
mull (%ecx) /* lsl of b */
addl %edx,-12(%ebp)
adcl $0,-8(%ebp)
adcl $0,-4(%ebp)
movl 4(%esi),%eax /* midl of Xsig */
mull 8(%ecx) /* msl of b */
addl %eax,-12(%ebp)
adcl %edx,-8(%ebp)
adcl $0,-4(%ebp)
movl 8(%esi),%eax /* msl of Xsig */
mull 4(%ecx) /* midl of b */
addl %eax,-12(%ebp)
adcl %edx,-8(%ebp)
adcl $0,-4(%ebp)
movl 8(%esi),%eax /* msl of Xsig */
mull 8(%ecx) /* msl of b */
addl %eax,-8(%ebp)
adcl %edx,-4(%ebp)
movl -12(%ebp),%edx
movl %edx,(%esi)
movl -8(%ebp),%edx
movl %edx,4(%esi)
movl -4(%ebp),%edx
movl %edx,8(%esi)
popl %esi
leave
ret