On Windows, page walking is known as __chkstk.

[openssl.git] / crypto / bn / asm / x86_64-mont5.pl

diff --git a/crypto/bn/asm/x86_64-mont5.pl b/crypto/bn/asm/x86_64-mont5.pl
index 712bfbc6b84ceaf6b740f08f2d3c2f6b68a07e9a..aa6a5d1d0e5386c2219fb366ecfa693361a92275 100755 (executable)
--- a/crypto/bn/asm/x86_64-mont5.pl
+++ b/crypto/bn/asm/x86_64-mont5.pl
@@ -115,6 +115,8 @@ $code.=<<___;
 
        mov     %rax,8(%rsp,$num,8)     # tp[num+1]=%rsp
 .Lmul_body:
+       # An OS-agnostic version of __chkstk.
+       #
        # Some OSes (Windows) insist on stack being "wired" to
        # physical memory in strictly sequential manner, i.e. if stack
        # allocation spans two pages, then reference to farmost one can