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Directly expose vli functions if uECC_ENABLE_VLI_API != 0

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Added a header file for those functions as well.
This commit is contained in:
Ken MacKay
2015-10-12 21:29:56 -07:00
parent ca9e456f42
commit 74f6d2d9d7
8 changed files with 815 additions and 763 deletions
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asm_avr.inc
+29 -29
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@@ -45,7 +45,7 @@
#if (uECC_ASM == uECC_asm_fast)
static void vli_clear(uint8_t *vli) {
uECC_VLI_API void uECC_vli_clear(uint8_t *vli) {
__asm__ volatile (
REPEAT(uECC_BYTES,
"st %a[ptr]+, r1 \n\t")
@@ -56,7 +56,7 @@ static void vli_clear(uint8_t *vli) {
}
#define asm_clear 1
static void vli_set(uint8_t *dest, const uint8_t *src) {
uECC_VLI_API void uECC_vli_set(uint8_t *dest, const uint8_t *src) {
__asm__ volatile (
REPEAT(uECC_BYTES,
"ld r0, %a[sptr]+ \n\t"
@@ -68,7 +68,7 @@ static void vli_set(uint8_t *dest, const uint8_t *src) {
}
#define asm_set 1
static void vli_rshift1(uint8_t *vli) {
uECC_VLI_API void uECC_vli_rshift1(uint8_t *vli) {
__asm__ volatile (
"adiw r30, " STR(uECC_BYTES) " \n\t"
"ld r0, -z \n\t" /* Load byte. */
@@ -88,7 +88,7 @@ static void vli_rshift1(uint8_t *vli) {
#define asm_rshift1 1
/* Computes result = left + right, returning carry. Can modify in place. */
static uint8_t vli_add(uint8_t *result, const uint8_t *left, const uint8_t *right) {
uECC_VLI_API uint8_t uECC_vli_add(uint8_t *result, const uint8_t *left, const uint8_t *right) {
uint8_t carry = 0;
uint8_t left_byte;
uint8_t right_byte;
@@ -119,7 +119,7 @@ static uint8_t vli_add(uint8_t *result, const uint8_t *left, const uint8_t *righ
#define asm_add 1
/* Computes result = left - right, returning borrow. Can modify in place. */
static uint8_t vli_sub(uint8_t *result, const uint8_t *left, const uint8_t *right) {
uECC_VLI_API uint8_t uECC_vli_sub(uint8_t *result, const uint8_t *left, const uint8_t *right) {
uint8_t borrow = 0;
uint8_t left_byte;
uint8_t right_byte;
@@ -151,7 +151,7 @@ static uint8_t vli_sub(uint8_t *result, const uint8_t *left, const uint8_t *righ
#if (uECC_BYTES == 20)
__attribute((noinline))
static void vli_mult(uint8_t *result, const uint8_t *left, const uint8_t *right) {
uECC_VLI_API void uECC_vli_mult(uint8_t *result, const uint8_t *left, const uint8_t *right) {
__asm__ volatile (
"adiw r30, 10 \n\t"
"adiw r28, 10 \n\t"
@@ -2066,7 +2066,7 @@ static void vli_mult(uint8_t *result, const uint8_t *left, const uint8_t *right)
#define asm_mult 1
#elif (uECC_BYTES == 24)
__attribute((noinline))
static void vli_mult(uint8_t *result, const uint8_t *left, const uint8_t *right) {
uECC_VLI_API void uECC_vli_mult(uint8_t *result, const uint8_t *left, const uint8_t *right) {
__asm__ volatile (
"adiw r30, 20 \n\t"
"adiw r28, 20 \n\t"
@@ -4849,7 +4849,7 @@ static void vli_mult(uint8_t *result, const uint8_t *left, const uint8_t *right)
#define asm_mult 1
#elif (uECC_BYTES == 28)
__attribute((noinline))
static void vli_mult(uint8_t *result, const uint8_t *left, const uint8_t *right) {
uECC_VLI_API void uECC_vli_mult(uint8_t *result, const uint8_t *left, const uint8_t *right) {
__asm__ volatile (
"adiw r30, 20 \n\t"
"adiw r28, 20 \n\t"
@@ -8619,7 +8619,7 @@ static void vli_mult(uint8_t *result, const uint8_t *left, const uint8_t *right)
#define asm_mult 1
#elif (uECC_BYTES == 32)
__attribute((noinline))
static void vli_mult(uint8_t *result, const uint8_t *left, const uint8_t *right) {
uECC_VLI_API void uECC_vli_mult(uint8_t *result, const uint8_t *left, const uint8_t *right) {
__asm__ volatile (
"adiw r30, 30 \n\t"
"adiw r28, 30 \n\t"
@@ -13549,7 +13549,7 @@ static void vli_mult(uint8_t *result, const uint8_t *left, const uint8_t *right)
#if (uECC_BYTES == 20)
// Inlining is allowed because y (r28, r29) is not used.
static void vli_square(uint8_t *result, const uint8_t *left) {
uECC_VLI_API void uECC_vli_square(uint8_t *result, const uint8_t *left) {
__asm__ volatile (
"ld r2, x+ \n\t"
"ld r3, x+ \n\t"
@@ -14716,7 +14716,7 @@ static void vli_square(uint8_t *result, const uint8_t *left) {
#elif (uECC_BYTES == 24)
__attribute((noinline))
static void vli_square(uint8_t *result, const uint8_t *left) {
uECC_VLI_API void uECC_vli_square(uint8_t *result, const uint8_t *left) {
__asm__ volatile (
"ldi r25, 0 \n\t"
"movw r28, r26 \n\t"
@@ -16375,7 +16375,7 @@ static void vli_square(uint8_t *result, const uint8_t *left) {
#elif (uECC_BYTES == 28)
__attribute((noinline))
static void vli_square(uint8_t *result, const uint8_t *left) {
uECC_VLI_API void uECC_vli_square(uint8_t *result, const uint8_t *left) {
__asm__ volatile (
"ldi r25, 0 \n\t"
"movw r28, r26 \n\t"
@@ -18590,7 +18590,7 @@ static void vli_square(uint8_t *result, const uint8_t *left) {
#elif (uECC_BYTES == 32)
__attribute((noinline))
static void vli_square(uint8_t *result, const uint8_t *left) {
uECC_VLI_API void uECC_vli_square(uint8_t *result, const uint8_t *left) {
__asm__ volatile (
"ldi r25, 0 \n\t"
"movw r28, r26 \n\t"
@@ -21425,7 +21425,7 @@ static void vli_square(uint8_t *result, const uint8_t *left) {
#endif /* uECC_BYTES == xx */
#endif /* uECC_SQUARE_FUNC */
static void vli_modSub_fast(uint8_t *result, const uint8_t *left, const uint8_t *right) {
uECC_VLI_API void uECC_vli_modSub_fast(uint8_t *result, const uint8_t *left, const uint8_t *right) {
uint8_t t1, t2;
__asm__ volatile (
"push r28 \n\t" /* Save Y */
@@ -21475,7 +21475,7 @@ static void vli_modSub_fast(uint8_t *result, const uint8_t *left, const uint8_t
#define asm_modSub_fast 1
#if uECC_CURVE == uECC_secp160r1
static void vli_mmod_fast(uint8_t *RESTRICT result, uint8_t *RESTRICT product) {
uECC_VLI_API void uECC_vli_mmod_fast(uint8_t *RESTRICT result, uint8_t *RESTRICT product) {
uint8_t carry = 0;
__asm__ volatile (
"in r30, __SP_L__ \n\t"
@@ -21649,19 +21649,19 @@ static void vli_mmod_fast(uint8_t *RESTRICT result, uint8_t *RESTRICT product) {
if (carry > 0) {
--carry;
vli_sub(result, result, curve_p);
uECC_vli_sub(result, result, curve_p);
}
if (carry > 0) {
vli_sub(result, result, curve_p);
uECC_vli_sub(result, result, curve_p);
}
if (vli_cmp(result, curve_p) > 0) {
vli_sub(result, result, curve_p);
if (uECC_vli_cmp(result, curve_p) > 0) {
uECC_vli_sub(result, result, curve_p);
}
}
#define asm_mmod_fast 1
#elif (uECC_CURVE == uECC_secp256k1)
static void vli_mmod_fast(uint8_t *RESTRICT result, uint8_t *RESTRICT product) {
uECC_VLI_API void uECC_vli_mmod_fast(uint8_t *RESTRICT result, uint8_t *RESTRICT product) {
uint8_t carry = 0;
__asm__ volatile (
"in r30, __SP_L__ \n\t"
@@ -21972,13 +21972,13 @@ static void vli_mmod_fast(uint8_t *RESTRICT result, uint8_t *RESTRICT product) {
if (carry > 0) {
--carry;
vli_sub(result, result, curve_p);
uECC_vli_sub(result, result, curve_p);
}
if (carry > 0) {
vli_sub(result, result, curve_p);
uECC_vli_sub(result, result, curve_p);
}
if (vli_cmp(result, curve_p) > 0) {
vli_sub(result, result, curve_p);
if (uECC_vli_cmp(result, curve_p) > 0) {
uECC_vli_sub(result, result, curve_p);
}
}
#define asm_mmod_fast 1
@@ -21988,7 +21988,7 @@ static void vli_mmod_fast(uint8_t *RESTRICT result, uint8_t *RESTRICT product) {
#endif /* (uECC_ASM == uECC_asm_fast) */
#if !asm_rshift1
static void vli_rshift1(uint8_t *vli) {
uECC_VLI_API void uECC_vli_rshift1(uint8_t *vli) {
uint8_t i = uECC_BYTES;
__asm__ volatile (
"adiw r30, " STR(uECC_BYTES) " \n\t"
@@ -22010,7 +22010,7 @@ static void vli_rshift1(uint8_t *vli) {
#endif
#if !asm_add
static uint8_t vli_add(uint8_t *result, const uint8_t *left, const uint8_t *right) {
uECC_VLI_API uint8_t uECC_vli_add(uint8_t *result, const uint8_t *left, const uint8_t *right) {
uint8_t i = uECC_BYTES;
uint8_t carry = 0;
uint8_t left_byte;
@@ -22041,7 +22041,7 @@ static uint8_t vli_add(uint8_t *result, const uint8_t *left, const uint8_t *righ
#endif
#if !asm_sub
static uint8_t vli_sub(uint8_t *result, const uint8_t *left, const uint8_t *right) {
uECC_VLI_API uint8_t uECC_vli_sub(uint8_t *result, const uint8_t *left, const uint8_t *right) {
uint8_t i = uECC_BYTES;
uint8_t borrow = 0;
uint8_t left_byte;
@@ -22073,7 +22073,7 @@ static uint8_t vli_sub(uint8_t *result, const uint8_t *left, const uint8_t *righ
#if !asm_mult
__attribute((noinline))
static void vli_mult(uint8_t *result, const uint8_t *left, const uint8_t *right) {
uECC_VLI_API void uECC_vli_mult(uint8_t *result, const uint8_t *left, const uint8_t *right) {
uint8_t r0 = 0;
uint8_t r1 = 0;
uint8_t r2 = 0;
@@ -22166,7 +22166,7 @@ static void vli_mult(uint8_t *result, const uint8_t *left, const uint8_t *right)
#if uECC_SQUARE_FUNC
#if !asm_square
static void vli_square(uint8_t *result, const uint8_t *left) {
uECC_VLI_API void uECC_vli_square(uint8_t *result, const uint8_t *left) {
uint8_t r0 = 0;
uint8_t r1 = 0;
uint8_t r2 = 0;