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Add faster ARM multiplication code using UMAAL (#69)

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On ARM platforms that support UMAAL, this new code should speed up curve
operations by 15-20%. There is automatic detection of UMAAL support
using compiler macros, but if it doesn't work for a given platform,
#define uECC_ARM_USE_UMAAL to 1 or 0 as desired.
This commit is contained in:
Ken MacKay
2016-04-20 21:22:40 -07:00
parent b6c0cdbe7d
commit d671b1cc22
5 changed files with 2091 additions and 795 deletions
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asm_arm.inc
+141 -562
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@@ -156,342 +156,16 @@ uECC_VLI_API uECC_word_t uECC_vli_sub(uECC_word_t *result,
#if (uECC_OPTIMIZATION_LEVEL >= 3)
#include "asm_arm_mult_square.inc"
#define FAST_MULT_ASM_5_TO_6 \
"cmp r3, #5 \n\t" \
"beq 1f \n\t" \
\
/* r4 = left high, r5 = right high */ \
"ldr r4, [r1] \n\t" \
"ldr r5, [r2] \n\t" \
\
"sub r0, #20 \n\t" \
"sub r1, #20 \n\t" \
"sub r2, #20 \n\t" \
\
"ldr r6, [r0] \n\t" \
"ldr r7, [r1], #4 \n\t" \
"ldr r8, [r2], #4 \n\t" \
"mov r14, #0 \n\t" \
"umull r9, r10, r4, r8 \n\t" \
"umull r11, r12, r5, r7 \n\t" \
"adds r9, r9, r6 \n\t" \
"adc r10, r10, #0 \n\t" \
"adds r9, r9, r11 \n\t" \
"adcs r10, r10, r12 \n\t" \
"adc r14, r14, #0 \n\t" \
"str r9, [r0], #4 \n\t" \
\
"ldr r6, [r0] \n\t" \
"adds r10, r10, r6 \n\t" \
"adcs r14, r14, #0 \n\t" \
"ldr r7, [r1], #4 \n\t" \
"ldr r8, [r2], #4 \n\t" \
"mov r9, #0 \n\t" \
"umull r11, r12, r4, r8 \n\t" \
"adds r10, r10, r11 \n\t" \
"adcs r14, r14, r12 \n\t" \
"adc r9, r9, #0 \n\t" \
"umull r11, r12, r5, r7 \n\t" \
"adds r10, r10, r11 \n\t" \
"adcs r14, r14, r12 \n\t" \
"adc r9, r9, #0 \n\t" \
"str r10, [r0], #4 \n\t" \
\
"ldr r6, [r0] \n\t" \
"adds r14, r14, r6 \n\t" \
"adcs r9, r9, #0 \n\t" \
"ldr r7, [r1], #4 \n\t" \
"ldr r8, [r2], #4 \n\t" \
"mov r10, #0 \n\t" \
"umull r11, r12, r4, r8 \n\t" \
"adds r14, r14, r11 \n\t" \
"adcs r9, r9, r12 \n\t" \
"adc r10, r10, #0 \n\t" \
"umull r11, r12, r5, r7 \n\t" \
"adds r14, r14, r11 \n\t" \
"adcs r9, r9, r12 \n\t" \
"adc r10, r10, #0 \n\t" \
"str r14, [r0], #4 \n\t" \
\
"ldr r6, [r0] \n\t" \
"adds r9, r9, r6 \n\t" \
"adcs r10, r10, #0 \n\t" \
"ldr r7, [r1], #4 \n\t" \
"ldr r8, [r2], #4 \n\t" \
"mov r14, #0 \n\t" \
"umull r11, r12, r4, r8 \n\t" \
"adds r9, r9, r11 \n\t" \
"adcs r10, r10, r12 \n\t" \
"adc r14, r14, #0 \n\t" \
"umull r11, r12, r5, r7 \n\t" \
"adds r9, r9, r11 \n\t" \
"adcs r10, r10, r12 \n\t" \
"adc r14, r14, #0 \n\t" \
"str r9, [r0], #4 \n\t" \
\
"ldr r6, [r0] \n\t" \
"adds r10, r10, r6 \n\t" \
"adcs r14, r14, #0 \n\t" \
/* skip past already-loaded (r4, r5) */ \
"ldr r7, [r1], #8 \n\t" \
"ldr r8, [r2], #8 \n\t" \
"mov r9, #0 \n\t" \
"umull r11, r12, r4, r8 \n\t" \
"adds r10, r10, r11 \n\t" \
"adcs r14, r14, r12 \n\t" \
"adc r9, r9, #0 \n\t" \
"umull r11, r12, r5, r7 \n\t" \
"adds r10, r10, r11 \n\t" \
"adcs r14, r14, r12 \n\t" \
"adc r9, r9, #0 \n\t" \
"str r10, [r0], #4 \n\t" \
\
"umull r11, r12, r4, r5 \n\t" \
"adds r11, r11, r14 \n\t" \
"adc r12, r12, r9 \n\t" \
"stmia r0!, {r11, r12} \n\t"
#define FAST_MULT_ASM_6_TO_7 \
"cmp r3, #6 \n\t" \
"beq 1f \n\t" \
\
/* r4 = left high, r5 = right high */ \
"ldr r4, [r1] \n\t" \
"ldr r5, [r2] \n\t" \
\
"sub r0, #24 \n\t" \
"sub r1, #24 \n\t" \
"sub r2, #24 \n\t" \
\
"ldr r6, [r0] \n\t" \
"ldr r7, [r1], #4 \n\t" \
"ldr r8, [r2], #4 \n\t" \
"mov r14, #0 \n\t" \
"umull r9, r10, r4, r8 \n\t" \
"umull r11, r12, r5, r7 \n\t" \
"adds r9, r9, r6 \n\t" \
"adc r10, r10, #0 \n\t" \
"adds r9, r9, r11 \n\t" \
"adcs r10, r10, r12 \n\t" \
"adc r14, r14, #0 \n\t" \
"str r9, [r0], #4 \n\t" \
\
"ldr r6, [r0] \n\t" \
"adds r10, r10, r6 \n\t" \
"adcs r14, r14, #0 \n\t" \
"ldr r7, [r1], #4 \n\t" \
"ldr r8, [r2], #4 \n\t" \
"mov r9, #0 \n\t" \
"umull r11, r12, r4, r8 \n\t" \
"adds r10, r10, r11 \n\t" \
"adcs r14, r14, r12 \n\t" \
"adc r9, r9, #0 \n\t" \
"umull r11, r12, r5, r7 \n\t" \
"adds r10, r10, r11 \n\t" \
"adcs r14, r14, r12 \n\t" \
"adc r9, r9, #0 \n\t" \
"str r10, [r0], #4 \n\t" \
\
"ldr r6, [r0] \n\t" \
"adds r14, r14, r6 \n\t" \
"adcs r9, r9, #0 \n\t" \
"ldr r7, [r1], #4 \n\t" \
"ldr r8, [r2], #4 \n\t" \
"mov r10, #0 \n\t" \
"umull r11, r12, r4, r8 \n\t" \
"adds r14, r14, r11 \n\t" \
"adcs r9, r9, r12 \n\t" \
"adc r10, r10, #0 \n\t" \
"umull r11, r12, r5, r7 \n\t" \
"adds r14, r14, r11 \n\t" \
"adcs r9, r9, r12 \n\t" \
"adc r10, r10, #0 \n\t" \
"str r14, [r0], #4 \n\t" \
\
"ldr r6, [r0] \n\t" \
"adds r9, r9, r6 \n\t" \
"adcs r10, r10, #0 \n\t" \
"ldr r7, [r1], #4 \n\t" \
"ldr r8, [r2], #4 \n\t" \
"mov r14, #0 \n\t" \
"umull r11, r12, r4, r8 \n\t" \
"adds r9, r9, r11 \n\t" \
"adcs r10, r10, r12 \n\t" \
"adc r14, r14, #0 \n\t" \
"umull r11, r12, r5, r7 \n\t" \
"adds r9, r9, r11 \n\t" \
"adcs r10, r10, r12 \n\t" \
"adc r14, r14, #0 \n\t" \
"str r9, [r0], #4 \n\t" \
\
"ldr r6, [r0] \n\t" \
"adds r10, r10, r6 \n\t" \
"adcs r14, r14, #0 \n\t" \
"ldr r7, [r1], #4 \n\t" \
"ldr r8, [r2], #4 \n\t" \
"mov r9, #0 \n\t" \
"umull r11, r12, r4, r8 \n\t" \
"adds r10, r10, r11 \n\t" \
"adcs r14, r14, r12 \n\t" \
"adc r9, r9, #0 \n\t" \
"umull r11, r12, r5, r7 \n\t" \
"adds r10, r10, r11 \n\t" \
"adcs r14, r14, r12 \n\t" \
"adc r9, r9, #0 \n\t" \
"str r10, [r0], #4 \n\t" \
\
"ldr r6, [r0] \n\t" \
"adds r14, r14, r6 \n\t" \
"adcs r9, r9, #0 \n\t" \
/* skip past already-loaded (r4, r5) */ \
"ldr r7, [r1], #8 \n\t" \
"ldr r8, [r2], #8 \n\t" \
"mov r10, #0 \n\t" \
"umull r11, r12, r4, r8 \n\t" \
"adds r14, r14, r11 \n\t" \
"adcs r9, r9, r12 \n\t" \
"adc r10, r10, #0 \n\t" \
"umull r11, r12, r5, r7 \n\t" \
"adds r14, r14, r11 \n\t" \
"adcs r9, r9, r12 \n\t" \
"adc r10, r10, #0 \n\t" \
"str r14, [r0], #4 \n\t" \
\
"umull r11, r12, r4, r5 \n\t" \
"adds r11, r11, r9 \n\t" \
"adc r12, r12, r10 \n\t" \
"stmia r0!, {r11, r12} \n\t"
#define FAST_MULT_ASM_7_TO_8 \
"cmp r3, #7 \n\t" \
"beq 1f \n\t" \
\
/* r4 = left high, r5 = right high */ \
"ldr r4, [r1] \n\t" \
"ldr r5, [r2] \n\t" \
\
"sub r0, #28 \n\t" \
"sub r1, #28 \n\t" \
"sub r2, #28 \n\t" \
\
"ldr r6, [r0] \n\t" \
"ldr r7, [r1], #4 \n\t" \
"ldr r8, [r2], #4 \n\t" \
"mov r14, #0 \n\t" \
"umull r9, r10, r4, r8 \n\t" \
"umull r11, r12, r5, r7 \n\t" \
"adds r9, r9, r6 \n\t" \
"adc r10, r10, #0 \n\t" \
"adds r9, r9, r11 \n\t" \
"adcs r10, r10, r12 \n\t" \
"adc r14, r14, #0 \n\t" \
"str r9, [r0], #4 \n\t" \
\
"ldr r6, [r0] \n\t" \
"adds r10, r10, r6 \n\t" \
"adcs r14, r14, #0 \n\t" \
"ldr r7, [r1], #4 \n\t" \
"ldr r8, [r2], #4 \n\t" \
"mov r9, #0 \n\t" \
"umull r11, r12, r4, r8 \n\t" \
"adds r10, r10, r11 \n\t" \
"adcs r14, r14, r12 \n\t" \
"adc r9, r9, #0 \n\t" \
"umull r11, r12, r5, r7 \n\t" \
"adds r10, r10, r11 \n\t" \
"adcs r14, r14, r12 \n\t" \
"adc r9, r9, #0 \n\t" \
"str r10, [r0], #4 \n\t" \
\
"ldr r6, [r0] \n\t" \
"adds r14, r14, r6 \n\t" \
"adcs r9, r9, #0 \n\t" \
"ldr r7, [r1], #4 \n\t" \
"ldr r8, [r2], #4 \n\t" \
"mov r10, #0 \n\t" \
"umull r11, r12, r4, r8 \n\t" \
"adds r14, r14, r11 \n\t" \
"adcs r9, r9, r12 \n\t" \
"adc r10, r10, #0 \n\t" \
"umull r11, r12, r5, r7 \n\t" \
"adds r14, r14, r11 \n\t" \
"adcs r9, r9, r12 \n\t" \
"adc r10, r10, #0 \n\t" \
"str r14, [r0], #4 \n\t" \
\
"ldr r6, [r0] \n\t" \
"adds r9, r9, r6 \n\t" \
"adcs r10, r10, #0 \n\t" \
"ldr r7, [r1], #4 \n\t" \
"ldr r8, [r2], #4 \n\t" \
"mov r14, #0 \n\t" \
"umull r11, r12, r4, r8 \n\t" \
"adds r9, r9, r11 \n\t" \
"adcs r10, r10, r12 \n\t" \
"adc r14, r14, #0 \n\t" \
"umull r11, r12, r5, r7 \n\t" \
"adds r9, r9, r11 \n\t" \
"adcs r10, r10, r12 \n\t" \
"adc r14, r14, #0 \n\t" \
"str r9, [r0], #4 \n\t" \
\
"ldr r6, [r0] \n\t" \
"adds r10, r10, r6 \n\t" \
"adcs r14, r14, #0 \n\t" \
"ldr r7, [r1], #4 \n\t" \
"ldr r8, [r2], #4 \n\t" \
"mov r9, #0 \n\t" \
"umull r11, r12, r4, r8 \n\t" \
"adds r10, r10, r11 \n\t" \
"adcs r14, r14, r12 \n\t" \
"adc r9, r9, #0 \n\t" \
"umull r11, r12, r5, r7 \n\t" \
"adds r10, r10, r11 \n\t" \
"adcs r14, r14, r12 \n\t" \
"adc r9, r9, #0 \n\t" \
"str r10, [r0], #4 \n\t" \
\
"ldr r6, [r0] \n\t" \
"adds r14, r14, r6 \n\t" \
"adcs r9, r9, #0 \n\t" \
"ldr r7, [r1], #4 \n\t" \
"ldr r8, [r2], #4 \n\t" \
"mov r10, #0 \n\t" \
"umull r11, r12, r4, r8 \n\t" \
"adds r14, r14, r11 \n\t" \
"adcs r9, r9, r12 \n\t" \
"adc r10, r10, #0 \n\t" \
"umull r11, r12, r5, r7 \n\t" \
"adds r14, r14, r11 \n\t" \
"adcs r9, r9, r12 \n\t" \
"adc r10, r10, #0 \n\t" \
"str r14, [r0], #4 \n\t" \
\
"ldr r6, [r0] \n\t" \
"adds r9, r9, r6 \n\t" \
"adcs r10, r10, #0 \n\t" \
/* skip past already-loaded (r4, r5) */ \
"ldr r7, [r1], #8 \n\t" \
"ldr r8, [r2], #8 \n\t" \
"mov r14, #0 \n\t" \
"umull r11, r12, r4, r8 \n\t" \
"adds r9, r9, r11 \n\t" \
"adcs r10, r10, r12 \n\t" \
"adc r14, r14, #0 \n\t" \
"umull r11, r12, r5, r7 \n\t" \
"adds r9, r9, r11 \n\t" \
"adcs r10, r10, r12 \n\t" \
"adc r14, r14, #0 \n\t" \
"str r9, [r0], #4 \n\t" \
\
"umull r11, r12, r4, r5 \n\t" \
"adds r11, r11, r10 \n\t" \
"adc r12, r12, r14 \n\t" \
"stmia r0!, {r11, r12} \n\t"
#if (uECC_PLATFORM != uECC_arm_thumb)
#if uECC_ARM_USE_UMAAL
#include "asm_arm_mult_square_umaal.inc"
#else
#include "asm_arm_mult_square.inc"
#endif
#if (uECC_OPTIMIZATION_LEVEL == 3)
uECC_VLI_API void uECC_vli_mult(uint32_t *result,
const uint32_t *left,
const uint32_t *right,
@@ -503,11 +177,8 @@ uECC_VLI_API void uECC_vli_mult(uint32_t *result,
__asm__ volatile (
".syntax unified \n\t"
"push {r3} \n\t"
#if (uECC_MIN_WORDS == 5)
FAST_MULT_ASM_5
"pop {r3} \n\t"
#if (uECC_MAX_WORDS > 5)
FAST_MULT_ASM_5_TO_6
#endif
@@ -519,7 +190,6 @@ uECC_VLI_API void uECC_vli_mult(uint32_t *result,
#endif
#elif (uECC_MIN_WORDS == 6)
FAST_MULT_ASM_6
"pop {r3} \n\t"
#if (uECC_MAX_WORDS > 6)
FAST_MULT_ASM_6_TO_7
#endif
@@ -528,15 +198,12 @@ uECC_VLI_API void uECC_vli_mult(uint32_t *result,
#endif
#elif (uECC_MIN_WORDS == 7)
FAST_MULT_ASM_7
"pop {r3} \n\t"
#if (uECC_MAX_WORDS > 7)
FAST_MULT_ASM_7_TO_8
#endif
#elif (uECC_MIN_WORDS == 8)
FAST_MULT_ASM_8
"pop {r3} \n\t"
#endif
"1: \n\t"
RESUME_SYNTAX
: "+r" (r0), "+r" (r1), "+r" (r2)
@@ -547,217 +214,6 @@ uECC_VLI_API void uECC_vli_mult(uint32_t *result,
#define asm_mult 1
#if uECC_SQUARE_FUNC
#define FAST_SQUARE_ASM_5_TO_6 \
"cmp r2, #5 \n\t" \
"beq 1f \n\t" \
\
/* r3 = high */ \
"ldr r3, [r1] \n\t" \
\
"sub r0, #20 \n\t" \
"sub r1, #20 \n\t" \
\
/* Do off-center multiplication */ \
"ldr r14, [r1], #4 \n\t" \
"umull r4, r5, r3, r14 \n\t" \
"ldr r14, [r1], #4 \n\t" \
"umull r7, r6, r3, r14 \n\t" \
"adds r5, r5, r7 \n\t" \
"ldr r14, [r1], #4 \n\t" \
"umull r8, r7, r3, r14 \n\t" \
"adcs r6, r6, r8 \n\t" \
"ldr r14, [r1], #4 \n\t" \
"umull r9, r8, r3, r14 \n\t" \
"adcs r7, r7, r9 \n\t" \
/* Skip already-loaded r3 */ \
"ldr r14, [r1], #8 \n\t" \
"umull r10, r9, r3, r14 \n\t" \
"adcs r8, r8, r10 \n\t" \
"adcs r9, r9, #0 \n\t" \
\
/* Multiply by 2 */ \
"mov r10, #0 \n\t" \
"adds r4, r4, r4 \n\t" \
"adcs r5, r5, r5 \n\t" \
"adcs r6, r6, r6 \n\t" \
"adcs r7, r7, r7 \n\t" \
"adcs r8, r8, r8 \n\t" \
"adcs r9, r9, r9 \n\t" \
"adcs r10, r10, #0 \n\t" \
\
/* Add into previous */ \
"ldr r14, [r0] \n\t" \
"adds r4, r4, r14 \n\t" \
"str r4, [r0], #4 \n\t" \
"ldr r14, [r0] \n\t" \
"adcs r5, r5, r14 \n\t" \
"str r5, [r0], #4 \n\t" \
"ldr r14, [r0] \n\t" \
"adcs r6, r6, r14 \n\t" \
"str r6, [r0], #4 \n\t" \
"ldr r14, [r0] \n\t" \
"adcs r7, r7, r14 \n\t" \
"str r7, [r0], #4 \n\t" \
"ldr r14, [r0] \n\t" \
"adcs r8, r8, r14 \n\t" \
"str r8, [r0], #4 \n\t" \
"adcs r9, r9, #0 \n\t" \
"adcs r10, r10, #0 \n\t" \
\
/* Perform center multiplication */ \
"umull r4, r5, r3, r3 \n\t" \
"adds r4, r4, r9 \n\t" \
"adc r5, r5, r10 \n\t" \
"stmia r0!, {r4, r5} \n\t"
#define FAST_SQUARE_ASM_6_TO_7 \
"cmp r2, #6 \n\t" \
"beq 1f \n\t" \
\
/* r3 = high */ \
"ldr r3, [r1] \n\t" \
\
"sub r0, #24 \n\t" \
"sub r1, #24 \n\t" \
\
/* Do off-center multiplication */ \
"ldr r14, [r1], #4 \n\t" \
"umull r4, r5, r3, r14 \n\t" \
"ldr r14, [r1], #4 \n\t" \
"umull r7, r6, r3, r14 \n\t" \
"adds r5, r5, r7 \n\t" \
"ldr r14, [r1], #4 \n\t" \
"umull r8, r7, r3, r14 \n\t" \
"adcs r6, r6, r8 \n\t" \
"ldr r14, [r1], #4 \n\t" \
"umull r9, r8, r3, r14 \n\t" \
"adcs r7, r7, r9 \n\t" \
"ldr r14, [r1], #4 \n\t" \
"umull r10, r9, r3, r14 \n\t" \
"adcs r8, r8, r10 \n\t" \
/* Skip already-loaded r3 */ \
"ldr r14, [r1], #8 \n\t" \
"umull r11, r10, r3, r14 \n\t" \
"adcs r9, r9, r11 \n\t" \
"adcs r10, r10, #0 \n\t" \
\
/* Multiply by 2 */ \
"mov r11, #0 \n\t" \
"adds r4, r4, r4 \n\t" \
"adcs r5, r5, r5 \n\t" \
"adcs r6, r6, r6 \n\t" \
"adcs r7, r7, r7 \n\t" \
"adcs r8, r8, r8 \n\t" \
"adcs r9, r9, r9 \n\t" \
"adcs r10, r10, r10 \n\t" \
"adcs r11, r11, #0 \n\t" \
\
/* Add into previous */ \
"ldr r14, [r0] \n\t" \
"adds r4, r4, r14 \n\t" \
"str r4, [r0], #4 \n\t" \
"ldr r14, [r0] \n\t" \
"adcs r5, r5, r14 \n\t" \
"str r5, [r0], #4 \n\t" \
"ldr r14, [r0] \n\t" \
"adcs r6, r6, r14 \n\t" \
"str r6, [r0], #4 \n\t" \
"ldr r14, [r0] \n\t" \
"adcs r7, r7, r14 \n\t" \
"str r7, [r0], #4 \n\t" \
"ldr r14, [r0] \n\t" \
"adcs r8, r8, r14 \n\t" \
"str r8, [r0], #4 \n\t" \
"ldr r14, [r0] \n\t" \
"adcs r9, r9, r14 \n\t" \
"str r9, [r0], #4 \n\t" \
"adcs r10, r10, #0 \n\t" \
"adcs r11, r11, #0 \n\t" \
\
/* Perform center multiplication */ \
"umull r4, r5, r3, r3 \n\t" \
"adds r4, r4, r10 \n\t" \
"adc r5, r5, r11 \n\t" \
"stmia r0!, {r4, r5} \n\t"
#define FAST_SQUARE_ASM_7_TO_8 \
"cmp r2, #7 \n\t" \
"beq 1f \n\t" \
\
/* r3 = high */ \
"ldr r3, [r1] \n\t" \
\
"sub r0, #28 \n\t" \
"sub r1, #28 \n\t" \
\
/* Do off-center multiplication */ \
"ldr r14, [r1], #4 \n\t" \
"umull r4, r5, r3, r14 \n\t" \
"ldr r14, [r1], #4 \n\t" \
"umull r7, r6, r3, r14 \n\t" \
"adds r5, r5, r7 \n\t" \
"ldr r14, [r1], #4 \n\t" \
"umull r8, r7, r3, r14 \n\t" \
"adcs r6, r6, r8 \n\t" \
"ldr r14, [r1], #4 \n\t" \
"umull r9, r8, r3, r14 \n\t" \
"adcs r7, r7, r9 \n\t" \
"ldr r14, [r1], #4 \n\t" \
"umull r10, r9, r3, r14 \n\t" \
"adcs r8, r8, r10 \n\t" \
"ldr r14, [r1], #4 \n\t" \
"umull r11, r10, r3, r14 \n\t" \
"adcs r9, r9, r11 \n\t" \
/* Skip already-loaded r3 */ \
"ldr r14, [r1], #8 \n\t" \
"umull r12, r11, r3, r14 \n\t" \
"adcs r10, r10, r12 \n\t" \
"adcs r11, r11, #0 \n\t" \
\
/* Multiply by 2 */ \
"mov r12, #0 \n\t" \
"adds r4, r4, r4 \n\t" \
"adcs r5, r5, r5 \n\t" \
"adcs r6, r6, r6 \n\t" \
"adcs r7, r7, r7 \n\t" \
"adcs r8, r8, r8 \n\t" \
"adcs r9, r9, r9 \n\t" \
"adcs r10, r10, r10 \n\t" \
"adcs r11, r11, r11 \n\t" \
"adcs r12, r12, #0 \n\t" \
\
/* Add into previous */ \
"ldr r14, [r0] \n\t" \
"adds r4, r4, r14 \n\t" \
"str r4, [r0], #4 \n\t" \
"ldr r14, [r0] \n\t" \
"adcs r5, r5, r14 \n\t" \
"str r5, [r0], #4 \n\t" \
"ldr r14, [r0] \n\t" \
"adcs r6, r6, r14 \n\t" \
"str r6, [r0], #4 \n\t" \
"ldr r14, [r0] \n\t" \
"adcs r7, r7, r14 \n\t" \
"str r7, [r0], #4 \n\t" \
"ldr r14, [r0] \n\t" \
"adcs r8, r8, r14 \n\t" \
"str r8, [r0], #4 \n\t" \
"ldr r14, [r0] \n\t" \
"adcs r9, r9, r14 \n\t" \
"str r9, [r0], #4 \n\t" \
"ldr r14, [r0] \n\t" \
"adcs r10, r10, r14 \n\t" \
"str r10, [r0], #4 \n\t" \
"adcs r11, r11, #0 \n\t" \
"adcs r12, r12, #0 \n\t" \
\
/* Perform center multiplication */ \
"umull r4, r5, r3, r3 \n\t" \
"adds r4, r4, r11 \n\t" \
"adc r5, r5, r12 \n\t" \
"stmia r0!, {r4, r5} \n\t"
uECC_VLI_API void uECC_vli_square(uECC_word_t *result,
const uECC_word_t *left,
wordcount_t num_words) {
@@ -767,13 +223,9 @@ uECC_VLI_API void uECC_vli_square(uECC_word_t *result,
__asm__ volatile (
".syntax unified \n\t"
"push {r1, r2} \n\t"
#if (uECC_MIN_WORDS == 5)
FAST_SQUARE_ASM_5
"pop {r1, r2} \n\t"
#if (uECC_MAX_WORDS > 5)
"add r1, #20 \n\t"
FAST_SQUARE_ASM_5_TO_6
#endif
#if (uECC_MAX_WORDS > 6)
@@ -784,9 +236,7 @@ uECC_VLI_API void uECC_vli_square(uECC_word_t *result,
#endif
#elif (uECC_MIN_WORDS == 6)
FAST_SQUARE_ASM_6
"pop {r1, r2} \n\t"
#if (uECC_MAX_WORDS > 6)
"add r1, #24 \n\t"
FAST_SQUARE_ASM_6_TO_7
#endif
#if (uECC_MAX_WORDS > 7)
@@ -794,14 +244,11 @@ uECC_VLI_API void uECC_vli_square(uECC_word_t *result,
#endif
#elif (uECC_MIN_WORDS == 7)
FAST_SQUARE_ASM_7
"pop {r1, r2} \n\t"
#if (uECC_MAX_WORDS > 7)
"add r1, #28 \n\t"
FAST_SQUARE_ASM_7_TO_8
#endif
#elif (uECC_MIN_WORDS == 8)
FAST_SQUARE_ASM_8
"pop {r1, r2} \n\t"
#endif
"1: \n\t"
@@ -814,6 +261,138 @@ uECC_VLI_API void uECC_vli_square(uECC_word_t *result,
#define asm_square 1
#endif /* uECC_SQUARE_FUNC */
#else /* (uECC_OPTIMIZATION_LEVEL > 3) */
uECC_VLI_API void uECC_vli_mult(uint32_t *result,
const uint32_t *left,
const uint32_t *right,
wordcount_t num_words) {
register uint32_t *r0 __asm__("r0") = result;
register const uint32_t *r1 __asm__("r1") = left;
register const uint32_t *r2 __asm__("r2") = right;
register uint32_t r3 __asm__("r3") = num_words;
#if uECC_SUPPORTS_secp160r1
if (num_words == 5) {
__asm__ volatile (
".syntax unified \n\t"
FAST_MULT_ASM_5
RESUME_SYNTAX
: "+r" (r0), "+r" (r1), "+r" (r2)
: "r" (r3)
: "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "r14", "cc", "memory"
);
return;
}
#endif
#if uECC_SUPPORTS_secp192r1
if (num_words == 6) {
__asm__ volatile (
".syntax unified \n\t"
FAST_MULT_ASM_6
RESUME_SYNTAX
: "+r" (r0), "+r" (r1), "+r" (r2)
: "r" (r3)
: "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "r14", "cc", "memory"
);
return;
}
#endif
#if uECC_SUPPORTS_secp224r1
if (num_words == 7) {
__asm__ volatile (
".syntax unified \n\t"
FAST_MULT_ASM_7
RESUME_SYNTAX
: "+r" (r0), "+r" (r1), "+r" (r2)
: "r" (r3)
: "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "r14", "cc", "memory"
);
return;
}
#endif
#if (uECC_SUPPORTS_secp256r1 || uECC_SUPPORTS_secp256k1)
if (num_words == 8) {
__asm__ volatile (
".syntax unified \n\t"
FAST_MULT_ASM_8
RESUME_SYNTAX
: "+r" (r0), "+r" (r1), "+r" (r2)
: "r" (r3)
: "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "r14", "cc", "memory"
);
return;
}
#endif
}
#define asm_mult 1
#if uECC_SQUARE_FUNC
uECC_VLI_API void uECC_vli_square(uECC_word_t *result,
const uECC_word_t *left,
wordcount_t num_words) {
register uint32_t *r0 __asm__("r0") = result;
register const uint32_t *r1 __asm__("r1") = left;
register uint32_t r2 __asm__("r2") = num_words;
#if uECC_SUPPORTS_secp160r1
if (num_words == 5) {
__asm__ volatile (
".syntax unified \n\t"
FAST_SQUARE_ASM_5
RESUME_SYNTAX
: "+r" (r0), "+r" (r1)
: "r" (r2)
: "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "r14", "cc", "memory"
);
return;
}
#endif
#if uECC_SUPPORTS_secp192r1
if (num_words == 6) {
__asm__ volatile (
".syntax unified \n\t"
FAST_SQUARE_ASM_6
RESUME_SYNTAX
: "+r" (r0), "+r" (r1)
: "r" (r2)
: "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "r14", "cc", "memory"
);
return;
}
#endif
#if uECC_SUPPORTS_secp224r1
if (num_words == 7) {
__asm__ volatile (
".syntax unified \n\t"
FAST_SQUARE_ASM_7
RESUME_SYNTAX
: "+r" (r0), "+r" (r1)
: "r" (r2)
: "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "r14", "cc", "memory"
);
return;
}
#endif
#if (uECC_SUPPORTS_secp256r1 || uECC_SUPPORTS_secp256k1)
if (num_words == 8) {
__asm__ volatile (
".syntax unified \n\t"
FAST_SQUARE_ASM_8
RESUME_SYNTAX
: "+r" (r0), "+r" (r1)
: "r" (r2)
: "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "r14", "cc", "memory"
);
return;
}
#endif
}
#define asm_square 1
#endif /* uECC_SQUARE_FUNC */
#endif /* (uECC_OPTIMIZATION_LEVEL > 3) */
#endif /* uECC_PLATFORM != uECC_arm_thumb */
#endif /* (uECC_OPTIMIZATION_LEVEL >= 3) */
asm_arm_mult_square.inc
+735 -232
View File
File diff suppressed because it is too large Load Diff
asm_arm_mult_square_umaal.inc
+1202
View File
File diff suppressed because it is too large Load Diff
types.h
+10
View File
@@ -23,6 +23,16 @@
#endif
#endif
#ifndef uECC_ARM_USE_UMAAL
#if (uECC_PLATFORM == uECC_arm) && (__ARM_ARCH >= 6)
#define uECC_ARM_USE_UMAAL 1
#elif (uECC_PLATFORM == uECC_arm_thumb2) && (__ARM_ARCH >= 6) && !__ARM_ARCH_7M__
#define uECC_ARM_USE_UMAAL 1
#else
#define uECC_ARM_USE_UMAAL 0
#endif
#endif
#ifndef uECC_WORD_SIZE
#if uECC_PLATFORM == uECC_avr
#define uECC_WORD_SIZE 1
uECC.h
+3 -1
View File
@@ -23,7 +23,9 @@ platform. */
/* Optimization level; trade speed for code size.
Larger values produce code that is faster but larger.
Currently supported values are 0 - 3; 0 is unusably slow for most applications. */
Currently supported values are 0 - 4; 0 is unusably slow for most applications.
Optimization level 4 currently only has an effect ARM platforms where more than one
curve is enabled. */
#ifndef uECC_OPTIMIZATION_LEVEL
#define uECC_OPTIMIZATION_LEVEL 2
#endif