Date: Mon, 9 Jun 2014 21:35:37 +0000 (UTC) From: Jilles Tjoelker <jilles@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r267307 - in head/lib/libc: amd64/gen i386/gen Message-ID: <201406092135.s59LZbK1048157@svn.freebsd.org>
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Author: jilles Date: Mon Jun 9 21:35:36 2014 New Revision: 267307 URL: http://svnweb.freebsd.org/changeset/base/267307 Log: siglongjmp(): Preserve floating point exception flags on i386 and amd64. Per POSIX, siglongjmp() shall be equivalent to longjmp() except that it must match sigsetjmp() instead of setjmp() and except for the effect on the signal mask. Therefore, it should preserve the floating point exception flags. This was fixed for longjmp() and _longjmp() in r180080 and r180081 for amd64 and i386 respectively. Modified: head/lib/libc/amd64/gen/sigsetjmp.S head/lib/libc/i386/gen/sigsetjmp.S Modified: head/lib/libc/amd64/gen/sigsetjmp.S ============================================================================== --- head/lib/libc/amd64/gen/sigsetjmp.S Mon Jun 9 21:06:46 2014 (r267306) +++ head/lib/libc/amd64/gen/sigsetjmp.S Mon Jun 9 21:35:36 2014 (r267307) @@ -105,7 +105,6 @@ ENTRY(__siglongjmp) movq 40(%rdx),%r13 movq 48(%rdx),%r14 movq 56(%rdx),%r15 - fninit fldcw 64(%rdx) testq %rax,%rax jnz 1f Modified: head/lib/libc/i386/gen/sigsetjmp.S ============================================================================== --- head/lib/libc/i386/gen/sigsetjmp.S Mon Jun 9 21:06:46 2014 (r267306) +++ head/lib/libc/i386/gen/sigsetjmp.S Mon Jun 9 21:35:36 2014 (r267307) @@ -115,7 +115,6 @@ ENTRY(__siglongjmp) movl 12(%edx),%ebp movl 16(%edx),%esi movl 20(%edx),%edi - fninit fldcw 24(%edx) testl %eax,%eax jnz 1f
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