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Fix ARM Thumb-1 build (#59)

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This commit is contained in:
Ken MacKay
2015-10-23 09:05:21 -07:00
parent 8768d701b3
commit 28fdb2c363
1 changed files with 16 additions and 4 deletions
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asm_arm.inc
+16 -4
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@@ -65,6 +65,7 @@ uECC_VLI_API uECC_word_t uECC_vli_add(uECC_word_t *result,
"movs %[carry], #0 \n\t"
#if (uECC_MAX_WORDS != uECC_MIN_WORDS)
"adr %[left], 1f \n\t"
".align 4 \n\t"
"adds %[jump], %[left] \n\t"
#endif
@@ -118,6 +119,7 @@ uECC_VLI_API uECC_word_t uECC_vli_sub(uECC_word_t *result,
"movs %[carry], #0 \n\t"
#if (uECC_MAX_WORDS != uECC_MIN_WORDS)
"adr %[left], 1f \n\t"
".align 4 \n\t"
"adds %[jump], %[left] \n\t"
#endif
@@ -973,7 +975,10 @@ uECC_VLI_API void uECC_vli_mult(uECC_word_t *result,
"subs %[r7], %[r0] \n\t" /* r7 = i = k - (num_words - 1) (times 4) */
"3: \n\t" /* inner loop */
"push {%[r3], %[r4], %[r5], %[r6]} \n\t" /* push things, r3 (c0) is at the top of stack. */
"push {%[r6]} \n\t"
"push {%[r5]} \n\t"
"push {%[r4]} \n\t"
"push {%[r3]} \n\t" /* push things, r3 (c0) is at the top of stack. */
"subs %[r0], %[r6], %[r7] \n\t" /* r0 = k - i */
"ldr %[r4], [%[r2], %[r0]] \n\t" /* r4 = right[k - i] */
@@ -1003,7 +1008,9 @@ uECC_VLI_API void uECC_vli_mult(uECC_word_t *result,
"adcs %[r6], %[r3] \n\t" /* r6 = high word =
a1 * b1 + carry + ((b0 * a1 + a0 * b1) >> 16) */
"pop {%[r3], %[r4], %[r5]} \n\t" /* r3 = c0, r4 = c1, r5 = c2 */
"pop {%[r3]} \n\t" /* r3 = c0 */
"pop {%[r4]} \n\t" /* r4 = c1 */
"pop {%[r5]} \n\t" /* r5 = c2 */
"adds %[r3], %[r0] \n\t" /* add low word to c0 */
"adcs %[r4], %[r6] \n\t" /* add high word to c1, including carry */
"movs %[r0], #0 \n\t" /* r0 = 0 (does not affect carry bit) */
@@ -1146,7 +1153,10 @@ uECC_VLI_API void uECC_vli_square(uECC_word_t *result,
"subs %[r6], %[r0] \n\t" /* r6 = i = k - (num_words - 1) (times 4) */
"3: \n\t" /* inner loop */
"push {%[r2], %[r3], %[r4], %[r5]} \n\t" /* push things, r2 (c0) is at the top of stack. */
"push {%[r5]} \n\t"
"push {%[r4]} \n\t"
"push {%[r3]} \n\t"
"push {%[r2]} \n\t" /* push things, r2 (c0) is at the top of stack. */
"subs %[r7], %[r5], %[r6] \n\t" /* r7 = k - i */
"ldr %[r3], [%[r1], %[r7]] \n\t" /* r3 = left[k - i] */
@@ -1186,7 +1196,9 @@ uECC_VLI_API void uECC_vli_square(uECC_word_t *result,
"adcs %[r5], %[r3] \n\t" /* add carry from shift to high word */
"4: \n\t"
"pop {%[r2], %[r3], %[r4]} \n\t" /* r2 = c0, r3 = c1, r4 = c2 */
"pop {%[r2]} \n\t" /* r2 = c0 */
"pop {%[r3]} \n\t" /* r3 = c1 */
"pop {%[r4]} \n\t" /* r4 = c2 */
"adds %[r2], %[r0] \n\t" /* add low word to c0 */
"adcs %[r3], %[r5] \n\t" /* add high word to c1, including carry */
"movs %[r0], #0 \n\t" /* r0 = 0 (does not affect carry bit) */