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Poly1305 ARM32 assembly code: loading with ldm #8561

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Merged
douzzer merged 1 commit into from
Mar 14, 2025
Merged

Poly1305 ARM32 assembly code: loading with ldm #8561

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5 changes: 4 additions & 1 deletion wolfcrypt/src/port/arm/armv8-32-poly1305-asm.S
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Original file line number Diff line number Diff line change
Expand Up @@ -815,7 +815,10 @@ L_poly1305_arm32_blocks_start_1:
mov r12, #1
push {r2}
# Load message
ldm r1, {r2, r3, r4, r5}
ldr r2, [r1]
ldr r3, [r1, #4]
ldr r4, [r1, #8]
ldr r5, [r1, #12]
# Add message
adds r7, r7, r2
adcs r8, r8, r3
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5 changes: 4 additions & 1 deletion wolfcrypt/src/port/arm/armv8-32-poly1305-asm_c.c
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Expand Up @@ -870,7 +870,10 @@ void poly1305_arm32_blocks(Poly1305* ctx_p, const unsigned char* m_p,
"mov r12, #1\n\t"
"push {r2}\n\t"
/* Load message */
"ldm %[m], {r2, r3, r4, r5}\n\t"
"ldr %[bytes], [%[m]]\n\t"
"ldr r3, [%[m], #4]\n\t"
"ldr r4, [%[m], #8]\n\t"
"ldr r5, [%[m], #12]\n\t"
/* Add message */
"adds r7, r7, %[bytes]\n\t"
"adcs r8, r8, r3\n\t"
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