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Small fix for ExSetSquare

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This commit is contained in:
Diederik Huys 2013-03-26 23:38:18 +01:00
parent af073e29e4
commit 1d8e4308dc
1 changed files with 41 additions and 42 deletions
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83
lin64.asm
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@ -292,25 +292,25 @@ ExSetMult ENDP
;; rsi = a.n[4] / t9
ExSetSquare PROC C PUBLIC USES rbx rbp r12 r13 r14 r15
push rsi
mov rsi,0FFFFFFFFFFFFFh
mov rbp,0FFFFFFFFFFFFFh
;; c=a.n[0] * a.n[0]
mov r15,[rdi+0*8]
mov r10,rsi ; modulus
mov rax,r15
mul rax ; rsi=b.n[0]
mov rbx,[rdi+1*8] ; a.n[1]
add r15,r15 ; r15=2*a.n[0]
mov r14,[rdi+0*8] ; r14=a.n[0]
mov r10,rbp ; modulus
mov rax,r14
mul rax
mov r15,[rdi+1*8] ; a.n[1]
add r14,r14 ; r14=2*a.n[0]
mov r8,rax
and r10,rax ; only need lower qword
shrd r8,rdx,52
xor r9,r9
;; c+=2*a.n[0] * a.n[1]
mov rax,r15
mul rbx
mov rcx,[rdi+2*8] ; rcx=a.n[2]
mov r11,rsi ; modulus
mov rax,r14 ; r14=2*a.n[0]
mul r15
mov rbx,[rdi+2*8] ; rbx=a.n[2]
mov r11,rbp ; modulus
add r8,rax
adc r9,rdx
and r11,r8
@ -318,33 +318,32 @@ ExSetSquare PROC C PUBLIC USES rbx rbp r12 r13 r14 r15
xor r9,r9
;; c+=2*a.n[0]*a.n[2]+a.n[1]*a.n[1]
mov rax,r14
mul rbx
add r8,rax
adc r9,rdx
mov rax,r15
mul rcx
add r8,rax
adc r9,rdx
mov rax,rbx
mov r12,rsi ; modulus
mov r12,rbp ; modulus
mul rax
mov rbp,[rdi+3*8] ; rbp=a.n[3]
add rbx,rbx ; rbx=a.n[1]*2
mov rcx,[rdi+3*8] ; rcx=a.n[3]
add r15,r15 ; r15=a.n[1]*2
add r8,rax
adc r9,rdx
and r12,r8 ; only need lower dword
shrd r8,r9,52
xor r9,r9
;; c+=2*a.n[0]*a.n[3]+2*a.n[1]*a.n[2]
mov rax,r15
mul rbp
mov rax,r14
mul rcx
add r8,rax
adc r9,rdx
mov rax,rbx ; rax=2*a.n[1]
mov r13,rsi ; modulus
mul rcx
mov rsi,[rdi+4*8] ; rsi=a.n[4] / destroy constant
mov rax,r15 ; rax=2*a.n[1]
mov r13,rbp ; modulus
mul rbx
mov rsi,[rdi+4*8] ; rsi=a.n[4]
add r8,rax
adc r9,rdx
and r13,r8
@ -352,20 +351,20 @@ ExSetSquare PROC C PUBLIC USES rbx rbp r12 r13 r14 r15
xor r9,r9
;; c+=2*a.n[0]*a.n[4]+2*a.n[1]*a.n[3]+a.n[2]*a.n[2]
mov rax,r15 ; last time we need 2*a.n[0]
mov rax,r14 ; last time we need 2*a.n[0]
mul rsi
add r8,rax
adc r9,rdx
mov rax,rbx
mul rbp
mov r14,0FFFFFFFFFFFFFh ; modulus
mov rax,r15
mul rcx
mov r14,rbp ; modulus
add r8,rax
adc r9,rdx
mov rax,rcx
mov rax,rbx
mul rax
add rcx,rcx ; rcx=2*a.n[2]
add rbx,rbx ; rcx=2*a.n[2]
add r8,rax
adc r9,rdx
and r14,r8
@ -373,14 +372,14 @@ ExSetSquare PROC C PUBLIC USES rbx rbp r12 r13 r14 r15
xor r9,r9
;; c+=2*a.n[1]*a.n[4]+2*a.n[2]*a.n[3]
mov rax,rbx
mov rax,r15 ; last time we need 2*a.n[1]
mul rsi
add r8,rax
adc r9,rdx
mov rax,rcx
mul rbp
mov r15,0FFFFFFFFFFFFFh ; modulus
mov rax,rbx
mul rcx
mov r15,rbp ; modulus
add r8,rax
adc r9,rdx
and r15,r8
@ -388,24 +387,24 @@ ExSetSquare PROC C PUBLIC USES rbx rbp r12 r13 r14 r15
xor r9,r9
;; c+=2*a.n[2]*a.n[4]+a.n[3]*a.n[3]
mov rax,rcx ; 2*a.n[2]
mov rax,rbx ; last time we need 2*a.n[2]
mul rsi
add r8,rax
adc r9,rdx
mov rax,rbp ; a.n[3]
mov rax,rcx ; a.n[3]
mul rax
mov rbx,0FFFFFFFFFFFFFh ; modulus
mov rbx,rbp ; modulus
add r8,rax
adc r9,rdx
and rbx,r8 ; only need lower dword
lea rax,[2*rbp]
lea rax,[2*rcx]
shrd r8,r9,52
xor r9,r9
;; c+=2*a.n[3]*a.n[4]
mul rsi
mov rcx,0FFFFFFFFFFFFFh ; modulus
mov rcx,rbp ; modulus
add r8,rax
adc r9,rdx
and rcx,r8 ; only need lower dword
@ -415,7 +414,7 @@ ExSetSquare PROC C PUBLIC USES rbx rbp r12 r13 r14 r15
;; c+=a.n[4]*a.n[4]
mov rax,rsi
mul rax
mov rbp,0FFFFFFFFFFFFFh ; modulus
;; mov rbp,rbp ; modulus is already there!
add r8,rax
adc r9,rdx
and rbp,r8