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authorJason A. Donenfeld <Jason@zx2c4.com>2017-10-08 22:34:17 +0200
committerJason A. Donenfeld <Jason@zx2c4.com>2017-10-09 02:14:49 +0200
commitae9d5aa17aca671a9eb8627024a0d85e08ca01a9 (patch)
tree3ceecdde736a48c319863b786f2bf342145a8446 /src/crypto/chacha20-avx2-x86_64.S
parentqemu: bump stable kernel (diff)
downloadwireguard-monolithic-historical-ae9d5aa17aca671a9eb8627024a0d85e08ca01a9.tar.xz
wireguard-monolithic-historical-ae9d5aa17aca671a9eb8627024a0d85e08ca01a9.zip
crypto/x86_64: satisfy stack validation 2.0
We change this to look like the code gcc generates, so as to keep the objtool checker somewhat happy.
Diffstat (limited to 'src/crypto/chacha20-avx2-x86_64.S')
-rw-r--r--src/crypto/chacha20-avx2-x86_64.S4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/crypto/chacha20-avx2-x86_64.S b/src/crypto/chacha20-avx2-x86_64.S
index 8aabae0..48d6cc4 100644
--- a/src/crypto/chacha20-avx2-x86_64.S
+++ b/src/crypto/chacha20-avx2-x86_64.S
@@ -43,7 +43,7 @@ ENTRY(chacha20_asm_8block_xor_avx2)
vzeroupper
# 4 * 32 byte stack, 32-byte aligned
- mov %rsp, %r8
+ lea 8(%rsp),%r10
and $~31, %rsp
sub $0x80, %rsp
@@ -441,6 +441,6 @@ ENTRY(chacha20_asm_8block_xor_avx2)
vmovdqu %ymm15,0x01e0(%rsi)
vzeroupper
- mov %r8,%rsp
+ lea -8(%r10),%rsp
ret
ENDPROC(chacha20_asm_8block_xor_avx2)