Prefer https to http for gnu.org and fsf.org URLs

[thirdparty/glibc.git] / sysdeps / i386 / add_n.S

diff --git a/sysdeps/i386/add_n.S b/sysdeps/i386/add_n.S
index c2923094a8e8a042d2f34f4c350d29f73894de34..3c631d86847ab321e7ae4b1eaebf976bc1541fdd 100644 (file)
--- a/sysdeps/i386/add_n.S
+++ b/sysdeps/i386/add_n.S
@@ -1,6 +1,6 @@
 /* Add two limb vectors of the same length > 0 and store sum in a third
    limb vector.
-   Copyright (C) 1992-2017 Free Software Foundation, Inc.
+   Copyright (C) 1992-2019 Free Software Foundation, Inc.
    This file is part of the GNU MP Library.
 
    The GNU MP Library is free software; you can redistribute it and/or modify
@@ -15,9 +15,9 @@
 
    You should have received a copy of the GNU Lesser General Public License
    along with the GNU MP Library; see the file COPYING.LIB.  If not,
-   see <http://www.gnu.org/licenses/>.  */
+   see <https://www.gnu.org/licenses/>.  */
 
-#include "sysdep.h"
+#include <sysdep.h>
 #include "asm-syntax.h"
 
 #define PARMS  4+8     /* space for 2 saved regs */
@@ -40,6 +40,13 @@ ENTRY (__mpn_add_n)
        cfi_rel_offset (esi, 0)
        movl S2(%esp),%edx
        movl SIZE(%esp),%ecx
+
+#if IBT_ENABLED
+       pushl   %ebx
+       cfi_adjust_cfa_offset (4)
+       cfi_rel_offset (ebx, 0)
+#endif
+
        movl    %ecx,%eax
        shrl    $3,%ecx                 /* compute count for unrolled loop */
        negl    %eax
@@ -51,6 +58,9 @@ ENTRY (__mpn_add_n)
        subl    %eax,%esi               /* ... by a constant when we ... */
        subl    %eax,%edx               /* ... enter the loop */
        shrl    $2,%eax                 /* restore previous value */
+#if IBT_ENABLED
+       leal    -4(,%eax,4),%ebx        /* Count for 4-byte endbr32 */
+#endif
 #ifdef PIC
 /* Calculate start address in loop for PIC.  Due to limitations in some
    assemblers, Loop-L0-3 cannot be put into the leal */
@@ -64,30 +74,40 @@ L(0):       leal    (%eax,%eax,8),%eax
 #else
 /* Calculate start address in loop for non-PIC.  */
        leal    (L(oop) - 3)(%eax,%eax,8),%eax
+#endif
+#if IBT_ENABLED
+       addl    %ebx,%eax               /* Adjust for endbr32 */
 #endif
        jmp     *%eax                   /* jump into loop */
        ALIGN (3)
 L(oop):        movl    (%esi),%eax
        adcl    (%edx),%eax
        movl    %eax,(%edi)
+       _CET_ENDBR
        movl    4(%esi),%eax
        adcl    4(%edx),%eax
        movl    %eax,4(%edi)
+       _CET_ENDBR
        movl    8(%esi),%eax
        adcl    8(%edx),%eax
        movl    %eax,8(%edi)
+       _CET_ENDBR
        movl    12(%esi),%eax
        adcl    12(%edx),%eax
        movl    %eax,12(%edi)
+       _CET_ENDBR
        movl    16(%esi),%eax
        adcl    16(%edx),%eax
        movl    %eax,16(%edi)
+       _CET_ENDBR
        movl    20(%esi),%eax
        adcl    20(%edx),%eax
        movl    %eax,20(%edi)
+       _CET_ENDBR
        movl    24(%esi),%eax
        adcl    24(%edx),%eax
        movl    %eax,24(%edi)
+       _CET_ENDBR
        movl    28(%esi),%eax
        adcl    28(%edx),%eax
        movl    %eax,28(%edi)
@@ -100,6 +120,11 @@ L(oop):    movl    (%esi),%eax
        sbbl    %eax,%eax
        negl    %eax
 
+#if IBT_ENABLED
+       popl    %ebx
+       cfi_adjust_cfa_offset (-4)
+       cfi_restore (ebx)
+#endif
        popl %esi
        cfi_adjust_cfa_offset (-4)
        cfi_restore (esi)