deon/gnuk
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

more minor change for bignum

Browse Source
This commit is contained in:
NIIBE Yutaka
2013-12-25 09:30:42 +09:00
parent 26db39b1b7
commit 62863d52b2
2 changed files with 65 additions and 66 deletions
Download Patch File Download Diff File Expand all files Collapse all files

31
polarssl/library/bignum.c
View File

@@ -1465,39 +1465,38 @@ static void mpi_montsqr( size_t n, const t_uint *np, t_uint mm, t_uint *d )
x_i = *xj;
*xj++ = c;
asm (/* (C,R4,R5) := w_i_i + x_i*x_i; w_i_i := R5; */
"ldr r5, [%[wij]]\n\t" /* R5 := w_i_i; */
"mov %[c], #0\n\t"
"umull r7, r12, %[x_i], %[x_i]\n\t"
"adds r5, r5, r7\n\t"
"adc r4, r12, #0\n\t"
"ldr r5, [%[wij]]\n\t" /* R5 := w_i_i; */
"mov r4, %[c]\n\t"
"umlal r5, r4, %[x_i], %[x_i]\n\t"
"str r5, [%[wij]], #4\n\t"
"cmp %[xj], %[x_max1]\n\t"
"bhi 0f\n\t"
"mov r8, %[c]\n\t" /* R8 := 0, the constant ZERO from here. */
"mov r9, %[c]\n\t" /* R9 := 0, the constant ZERO from here. */
"beq 1f\n"
"2:\n\t"
"ldmia %[xj]!, { r7, r9 }\n\t"
"ldmia %[xj]!, { r7, r8 }\n\t"
"ldmia %[wij], { r5, r6 }\n\t"
/* (C,R4,R5) := (C,R4) + w_i_j + 2*x_i*x_j; */
"umull r7, r12, %[x_i], r7\n\t"
"adds r5, r5, r4\n\t"
"adc r4, %[c], r8\n\t"
"adc r4, %[c], r9\n\t"
"adds r5, r5, r7\n\t"
"adcs r4, r4, r12\n\t"
"adc %[c], r8, r8\n\t"
"adc %[c], r9, r9\n\t"
"adds r5, r5, r7\n\t"
"adcs r4, r4, r12\n\t"
"adc %[c], %[c], r8\n\t"
"adc %[c], %[c], r9\n\t"
/* (C,R4,R6) := (C,R4) + w_i_j + 2*x_i*x_j; */
"adds r6, r6, r4\n\t"
"adc r4, %[c], r8\n\t"
"umull r7, r12, %[x_i], r9\n\t"
"adc r4, %[c], r9\n\t"
"umull r7, r12, %[x_i], r8\n\t"
"adds r6, r6, r7\n\t"
"adcs r4, r4, r12\n\t"
"adc %[c], r8, r8\n\t"
"adc %[c], r9, r9\n\t"
"adds r6, r6, r7\n\t"
"adcs r4, r4, r12\n\t"
"adc %[c], %[c], r8\n\t"
"adc %[c], %[c], r9\n\t"
/**/
"stmia %[wij]!, { r5, r6 }\n\t"
"cmp %[xj], %[x_max1]\n\t"
@@ -1508,14 +1507,14 @@ static void mpi_montsqr( size_t n, const t_uint *np, t_uint mm, t_uint *d )
"ldr r5, [%[wij]]\n\t"
"ldr r6, [%[xj]], #4\n\t"
"adds r5, r5, r4\n\t"
"adc r4, %[c], r8\n\t"
"adc r4, %[c], r9\n\t"
"umull r7, r12, %[x_i], r6\n\t"
"adds r5, r5, r7\n\t"
"adcs r4, r4, r12\n\t"
"adc %[c], r8, r8\n\t"
"adc %[c], r9, r9\n\t"
"adds r5, r5, r7\n\t"
"adcs r4, r4, r12\n\t"
"adc %[c], %[c], r8\n\t"
"adc %[c], %[c], r9\n\t"
"str r5, [%[wij]], #4\n"
"0:\n\t"
"ldr r5, [%[wij]]\n\t"