Roll src/third_party/boringssl/src dc8c1d962..0f28691d3

third_party/boringssl/win-x86_64/crypto/chacha/chacha-x86_64.asm

Index: third_party/boringssl/win-x86_64/crypto/chacha/chacha-x86_64.asm
diff --git a/third_party/boringssl/win-x86_64/crypto/chacha/chacha-x86_64.asm b/third_party/boringssl/win-x86_64/crypto/chacha/chacha-x86_64.asm
index afebd2e01a4aaa9308f13c2dee6bdcf004fd473c..ce6fdb926c0d825437c7a49609ca42a20c07e0b5 100644
--- a/third_party/boringssl/win-x86_64/crypto/chacha/chacha-x86_64.asm
+++ b/third_party/boringssl/win-x86_64/crypto/chacha/chacha-x86_64.asm
@@ -27,6 +27,15 @@ DB	0x3,0x0,0x1,0x2,0x7,0x4,0x5,0x6,0xb,0x8,0x9,0xa,0xf,0xc,0xd,0xe
 $L$sigma:
 DB	101,120,112,97,110,100,32,51,50,45,98,121,116,101,32,107
 DB	0
+ALIGN	64
+$L$zeroz:
+	DD	0,0,0,0,1,0,0,0,2,0,0,0,3,0,0,0
+$L$fourz:
+	DD	4,0,0,0,4,0,0,0,4,0,0,0,4,0,0,0
+$L$incz:
+	DD	0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
+$L$sixteen:
+	DD	16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16
 DB	67,104,97,67,104,97,50,48,32,102,111,114,32,120,56,54
 DB	95,54,52,44,32,67,82,89,80,84,79,71,65,77,83,32
 DB	98,121,32,60,97,112,112,114,111,64,111,112,101,110,115,115
@@ -348,7 +357,7 @@ $L$do_sse3_after_all:
 	movdqa	XMMWORD[16+rsp],xmm1
 	movdqa	XMMWORD[32+rsp],xmm2
 	movdqa	XMMWORD[48+rsp],xmm3
-	mov	ebp,10
+	mov	r8,10
 	jmp	NEAR $L$oop_ssse3
 
 ALIGN	32
@@ -358,7 +367,7 @@ $L$oop_outer_ssse3:
 	movdqa	xmm1,XMMWORD[16+rsp]
 	movdqa	xmm2,XMMWORD[32+rsp]
 	paddd	xmm3,XMMWORD[48+rsp]
-	mov	ebp,10
+	mov	r8,10
 	movdqa	XMMWORD[48+rsp],xmm3
 	jmp	NEAR $L$oop_ssse3
 
@@ -407,7 +416,7 @@ DB	102,15,56,0,223
 	pshufd	xmm2,xmm2,78
 	pshufd	xmm1,xmm1,147
 	pshufd	xmm3,xmm3,57
-	dec	ebp
+	dec	r8
 	jnz	NEAR $L$oop_ssse3
 	paddd	xmm0,XMMWORD[rsp]
 	paddd	xmm1,XMMWORD[16+rsp]
@@ -444,27 +453,21 @@ $L$tail_ssse3:
 	movdqa	XMMWORD[16+rsp],xmm1
 	movdqa	XMMWORD[32+rsp],xmm2
 	movdqa	XMMWORD[48+rsp],xmm3
-	xor	rbx,rbx
+	xor	r8,r8
 
 $L$oop_tail_ssse3:
-	movzx	eax,BYTE[rbx*1+rsi]
-	movzx	ecx,BYTE[rbx*1+rsp]
-	lea	rbx,[1+rbx]
+	movzx	eax,BYTE[r8*1+rsi]
+	movzx	ecx,BYTE[r8*1+rsp]
+	lea	r8,[1+r8]
 	xor	eax,ecx
-	mov	BYTE[((-1))+rbx*1+rdi],al
+	mov	BYTE[((-1))+r8*1+rdi],al
 	dec	rdx
 	jnz	NEAR $L$oop_tail_ssse3
 
 $L$done_ssse3:
 	movaps	xmm6,XMMWORD[((64+32))+rsp]
 	movaps	xmm7,XMMWORD[((64+48))+rsp]
-	add	rsp,64+72
-	pop	r15
-	pop	r14
-	pop	r13
-	pop	r12
-	pop	rbp
-	pop	rbx
+	add	rsp,64+72+48
 	mov	rdi,QWORD[8+rsp]	;WIN64 epilogue
 	mov	rsi,QWORD[16+rsp]
 	DB	0F3h,0C3h		;repret