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ChaCha20: Enable streaming with Intel x86_64 asm

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This commit is contained in:
Sean Parkinson
2020-08-26 14:50:06 +10:00
parent d2802f2d15
commit 54c8774103
4 changed files with 96 additions and 22 deletions
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44
wolfcrypt/src/chacha_asm.S
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@@ -391,18 +391,19 @@ L_chacha_x64_partial_crypt_start:
addl 52(%rdi), %r13d
addl 56(%rdi), %r14d
addl 60(%rdi), %r15d
movl %eax, 48(%rsp)
movl %ebx, 52(%rsp)
movl %ecx, 56(%rsp)
movl %edx, 60(%rsp)
movl %r8d, 64(%rsp)
movl %r9d, 68(%rsp)
movl %r10d, 72(%rsp)
movl %r11d, 76(%rsp)
movl %r12d, 96(%rsp)
movl %r13d, 100(%rsp)
movl %r14d, 104(%rsp)
movl %r15d, 108(%rsp)
leaq 80(%rdi), %rbp
movl %eax, (%rbp)
movl %ebx, 4(%rbp)
movl %ecx, 8(%rbp)
movl %edx, 12(%rbp)
movl %r8d, 16(%rbp)
movl %r9d, 20(%rbp)
movl %r10d, 24(%rbp)
movl %r11d, 28(%rbp)
movl %r12d, 48(%rbp)
movl %r13d, 52(%rbp)
movl %r14d, 56(%rbp)
movl %r15d, 60(%rbp)
movl 8(%rsp), %eax
movl 12(%rsp), %ebx
movl 16(%rsp), %ecx
@@ -411,10 +412,10 @@ L_chacha_x64_partial_crypt_start:
addl 36(%rdi), %ebx
addl 40(%rdi), %ecx
addl 44(%rdi), %edx
movl %eax, 80(%rsp)
movl %ebx, 84(%rsp)
movl %ecx, 88(%rsp)
movl %edx, 92(%rsp)
movl %eax, 32(%rbp)
movl %ebx, 36(%rbp)
movl %ecx, 40(%rbp)
movl %edx, 44(%rbp)
movq 24(%rsp), %rdx
movq 40(%rsp), %rcx
addl $0x01, 48(%rdi)
@@ -424,7 +425,7 @@ L_chacha_x64_partial_crypt_start:
andl $7, %r8d
jz L_chacha_x64_partial_start64
L_chacha_x64_partial_start8:
movzbl (%rsp,%rbx,1), %eax
movzbl (%rbp,%rbx,1), %eax
xorb (%rsi,%rbx,1), %al
movb %al, (%rdx,%rbx,1)
incl %ebx
@@ -432,13 +433,16 @@ L_chacha_x64_partial_start8:
jne L_chacha_x64_partial_start8
je L_chacha_x64_partial_end64
L_chacha_x64_partial_start64:
movq (%rsp,%rbx,1), %rax
movq (%rbp,%rbx,1), %rax
xorq (%rsi,%rbx,1), %rax
movq %rax, (%rdx,%rbx,1)
addl $8, %ebx
L_chacha_x64_partial_end64:
cmpl %ecx, %ebx
jne L_chacha_x64_partial_start64
movl $0x40, %ecx
subl %ebx, %ecx
movl %ecx, 76(%rdi)
L_chacha_x64_done:
addq $0x40, %rsp
popq %r15
@@ -915,6 +919,7 @@ L_chacha20_avx1_block_crypt_start:
L_chacha20_avx1_block_done:
cmpl $0x00, %ecx
je L_chacha20_avx1_partial_done
leaq 80(%rdi), %r10
vmovdqu (%rdi), %xmm0
vmovdqu 16(%rdi), %xmm1
vmovdqu 32(%rdi), %xmm2
@@ -994,6 +999,9 @@ L_chacha20_avx1_partial_start64:
L_chacha20_avx1_partial_end64:
cmpl %ecx, %r11d
jne L_chacha20_avx1_partial_start64
movl $0x40, %r8d
subl %r11d, %r8d
movl %r8d, 76(%rdi)
L_chacha20_avx1_partial_done:
addq $0x190, %rsp
repz retq