diff -up libgcrypt-1.8.5/cipher/camellia-aesni-avx2-amd64.S.intel-cet libgcrypt-1.8.5/cipher/camellia-aesni-avx2-amd64.S
--- libgcrypt-1.8.5/cipher/camellia-aesni-avx2-amd64.S.intel-cet 2017-11-23 19:16:58.000000000 +0100
+++ libgcrypt-1.8.5/cipher/camellia-aesni-avx2-amd64.S 2020-01-23 15:36:44.148972045 +0100
@@ -18,8 +18,9 @@
* License along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
-#ifdef __x86_64
#include <config.h>
+
+#ifdef __x86_64
#if (defined(HAVE_COMPATIBLE_GCC_AMD64_PLATFORM_AS) || \
defined(HAVE_COMPATIBLE_GCC_WIN64_PLATFORM_AS)) && \
defined(ENABLE_AESNI_SUPPORT) && defined(ENABLE_AVX2_SUPPORT)
diff -up libgcrypt-1.8.5/cipher/camellia-aesni-avx-amd64.S.intel-cet libgcrypt-1.8.5/cipher/camellia-aesni-avx-amd64.S
--- libgcrypt-1.8.5/cipher/camellia-aesni-avx-amd64.S.intel-cet 2017-11-23 19:16:58.000000000 +0100
+++ libgcrypt-1.8.5/cipher/camellia-aesni-avx-amd64.S 2020-01-23 15:36:44.145972088 +0100
@@ -18,8 +18,9 @@
* License along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
-#ifdef __x86_64
#include <config.h>
+
+#ifdef __x86_64
#if (defined(HAVE_COMPATIBLE_GCC_AMD64_PLATFORM_AS) || \
defined(HAVE_COMPATIBLE_GCC_WIN64_PLATFORM_AS)) && \
defined(ENABLE_AESNI_SUPPORT) && defined(ENABLE_AVX_SUPPORT)
diff -up libgcrypt-1.8.5/cipher/chacha20-avx2-amd64.S.intel-cet libgcrypt-1.8.5/cipher/chacha20-avx2-amd64.S
--- libgcrypt-1.8.5/cipher/chacha20-avx2-amd64.S.intel-cet 2017-11-23 19:16:58.000000000 +0100
+++ libgcrypt-1.8.5/cipher/chacha20-avx2-amd64.S 2020-01-23 15:36:16.780250066 +0100
@@ -48,6 +48,9 @@
.globl _gcry_chacha20_amd64_avx2_blocks
ELF(.type _gcry_chacha20_amd64_avx2_blocks,@function;)
_gcry_chacha20_amd64_avx2_blocks:
+#ifdef _CET_ENDBR
+ _CET_ENDBR
+#endif
.Lchacha_blocks_avx2_local:
vzeroupper
pushq %rbx
diff -up libgcrypt-1.8.5/cipher/chacha20-sse2-amd64.S.intel-cet libgcrypt-1.8.5/cipher/chacha20-sse2-amd64.S
--- libgcrypt-1.8.5/cipher/chacha20-sse2-amd64.S.intel-cet 2017-11-23 19:16:58.000000000 +0100
+++ libgcrypt-1.8.5/cipher/chacha20-sse2-amd64.S 2020-01-23 15:36:16.783250095 +0100
@@ -41,6 +41,9 @@
.globl _gcry_chacha20_amd64_sse2_blocks
ELF(.type _gcry_chacha20_amd64_sse2_blocks,@function;)
_gcry_chacha20_amd64_sse2_blocks:
+#ifdef _CET_ENDBR
+ _CET_ENDBR
+#endif
.Lchacha_blocks_sse2_local:
pushq %rbx
pushq %rbp
diff -up libgcrypt-1.8.5/cipher/poly1305-avx2-amd64.S.intel-cet libgcrypt-1.8.5/cipher/poly1305-avx2-amd64.S
--- libgcrypt-1.8.5/cipher/poly1305-avx2-amd64.S.intel-cet 2017-11-23 19:16:58.000000000 +0100
+++ libgcrypt-1.8.5/cipher/poly1305-avx2-amd64.S 2020-01-23 15:36:16.784250105 +0100
@@ -43,6 +43,9 @@
.globl _gcry_poly1305_amd64_avx2_init_ext
ELF(.type _gcry_poly1305_amd64_avx2_init_ext,@function;)
_gcry_poly1305_amd64_avx2_init_ext:
+#ifdef _CET_ENDBR
+ _CET_ENDBR
+#endif
.Lpoly1305_init_ext_avx2_local:
xor %edx, %edx
vzeroupper
@@ -406,6 +409,9 @@ ELF(.size _gcry_poly1305_amd64_avx2_init
.globl _gcry_poly1305_amd64_avx2_blocks
ELF(.type _gcry_poly1305_amd64_avx2_blocks,@function;)
_gcry_poly1305_amd64_avx2_blocks:
+#ifdef _CET_ENDBR
+ _CET_ENDBR
+#endif
.Lpoly1305_blocks_avx2_local:
vzeroupper
pushq %rbp
@@ -732,6 +738,9 @@ ELF(.size _gcry_poly1305_amd64_avx2_bloc
.globl _gcry_poly1305_amd64_avx2_finish_ext
ELF(.type _gcry_poly1305_amd64_avx2_finish_ext,@function;)
_gcry_poly1305_amd64_avx2_finish_ext:
+#ifdef _CET_ENDBR
+ _CET_ENDBR
+#endif
.Lpoly1305_finish_ext_avx2_local:
vzeroupper
pushq %rbp
diff -up libgcrypt-1.8.5/cipher/poly1305-sse2-amd64.S.intel-cet libgcrypt-1.8.5/cipher/poly1305-sse2-amd64.S
--- libgcrypt-1.8.5/cipher/poly1305-sse2-amd64.S.intel-cet 2017-11-23 19:16:58.000000000 +0100
+++ libgcrypt-1.8.5/cipher/poly1305-sse2-amd64.S 2020-01-23 15:36:16.787250134 +0100
@@ -42,6 +42,9 @@
.globl _gcry_poly1305_amd64_sse2_init_ext
ELF(.type _gcry_poly1305_amd64_sse2_init_ext,@function;)
_gcry_poly1305_amd64_sse2_init_ext:
+#ifdef _CET_ENDBR
+ _CET_ENDBR
+#endif
.Lpoly1305_init_ext_x86_local:
xor %edx, %edx
pushq %r12
@@ -288,6 +291,9 @@ ELF(.size _gcry_poly1305_amd64_sse2_init
.globl _gcry_poly1305_amd64_sse2_finish_ext
ELF(.type _gcry_poly1305_amd64_sse2_finish_ext,@function;)
_gcry_poly1305_amd64_sse2_finish_ext:
+#ifdef _CET_ENDBR
+ _CET_ENDBR
+#endif
.Lpoly1305_finish_ext_x86_local:
pushq %rbp
movq %rsp, %rbp
@@ -439,6 +445,9 @@ ELF(.size _gcry_poly1305_amd64_sse2_fini
.globl _gcry_poly1305_amd64_sse2_blocks
ELF(.type _gcry_poly1305_amd64_sse2_blocks,@function;)
_gcry_poly1305_amd64_sse2_blocks:
+#ifdef _CET_ENDBR
+ _CET_ENDBR
+#endif
.Lpoly1305_blocks_x86_local:
pushq %rbp
movq %rsp, %rbp
diff -up libgcrypt-1.8.5/cipher/serpent-avx2-amd64.S.intel-cet libgcrypt-1.8.5/cipher/serpent-avx2-amd64.S
--- libgcrypt-1.8.5/cipher/serpent-avx2-amd64.S.intel-cet 2017-11-23 19:16:58.000000000 +0100
+++ libgcrypt-1.8.5/cipher/serpent-avx2-amd64.S 2020-01-23 15:36:44.151972003 +0100
@@ -18,8 +18,9 @@
* License along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
-#ifdef __x86_64
#include <config.h>
+
+#ifdef __x86_64
#if (defined(HAVE_COMPATIBLE_GCC_AMD64_PLATFORM_AS) || \
defined(HAVE_COMPATIBLE_GCC_WIN64_PLATFORM_AS)) && defined(USE_SERPENT) && \
defined(ENABLE_AVX2_SUPPORT)
diff -up libgcrypt-1.8.5/configure.ac.intel-cet libgcrypt-1.8.5/configure.ac
--- libgcrypt-1.8.5/configure.ac.intel-cet 2019-08-29 15:00:08.000000000 +0200
+++ libgcrypt-1.8.5/configure.ac 2020-01-23 15:35:28.147774463 +0100
@@ -95,6 +95,12 @@ AH_TOP([
AH_BOTTOM([
#define _GCRYPT_IN_LIBGCRYPT 1
+/* Add .note.gnu.property section for Intel CET in assembler sources
+ when CET is enabled. */
+#if defined(__ASSEMBLER__) && defined(__CET__)
+# include <cet.h>
+#endif
+
/* If the configure check for endianness has been disabled, get it from
OS macros. This is intended for making fat binary builds on OS X. */
#ifdef DISABLED_ENDIAN_CHECK
diff -up libgcrypt-1.8.5/mpi/config.links.intel-cet libgcrypt-1.8.5/mpi/config.links
--- libgcrypt-1.8.5/mpi/config.links.intel-cet 2017-11-23 19:16:58.000000000 +0100
+++ libgcrypt-1.8.5/mpi/config.links 2020-01-23 15:35:46.398952954 +0100
@@ -382,6 +382,16 @@ if test x"$mpi_cpu_arch" = x ; then
mpi_cpu_arch="unknown"
fi
+# Add .note.gnu.property section for Intel CET in assembler sources
+# when CET is enabled. */
+if test x"$mpi_cpu_arch" = xx86 ; then
+ cat <<EOF >> ./mpi/asm-syntax.h
+
+#if defined(__ASSEMBLER__) && defined(__CET__)
+# include <cet.h>
+#endif
+EOF
+fi
# Make sysdep.h
echo '/* created by config.links - do not edit */' >./mpi/sysdep.h
diff -up libgcrypt-1.8.5/mpi/i386/mpih-add1.S.intel-cet libgcrypt-1.8.5/mpi/i386/mpih-add1.S
--- libgcrypt-1.8.5/mpi/i386/mpih-add1.S.intel-cet 2017-11-23 19:16:58.000000000 +0100
+++ libgcrypt-1.8.5/mpi/i386/mpih-add1.S 2020-01-23 15:37:40.470175379 +0100
@@ -52,6 +52,10 @@ C_SYMBOL_NAME(_gcry_mpih_add_n:)
movl 20(%esp),%edx /* s2_ptr */
movl 24(%esp),%ecx /* size */
+#if defined __CET__ && (__CET__ & 1) != 0
+ pushl %ebx
+#endif
+
movl %ecx,%eax
shrl $3,%ecx /* compute count for unrolled loop */
negl %eax
@@ -63,6 +67,9 @@ C_SYMBOL_NAME(_gcry_mpih_add_n:)
subl %eax,%esi /* ... by a constant when we ... */
subl %eax,%edx /* ... enter the loop */
shrl $2,%eax /* restore previous value */
+#if defined __CET__ && (__CET__ & 1) != 0
+ 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 */
@@ -75,29 +82,53 @@ L0: leal (%eax,%eax,8),%eax
/* Calculate start address in loop for non-PIC. */
leal (Loop - 3)(%eax,%eax,8),%eax
#endif
+#if defined __CET__ && (__CET__ & 1) != 0
+ addl %ebx,%eax /* Adjust for endbr32 */
+#endif
jmp *%eax /* jump into loop */
ALIGN (3)
Loop: movl (%esi),%eax
adcl (%edx),%eax
movl %eax,(%edi)
+#ifdef _CET_ENDBR
+ _CET_ENDBR
+#endif
movl 4(%esi),%eax
adcl 4(%edx),%eax
movl %eax,4(%edi)
+#ifdef _CET_ENDBR
+ _CET_ENDBR
+#endif
movl 8(%esi),%eax
adcl 8(%edx),%eax
movl %eax,8(%edi)
+#ifdef _CET_ENDBR
+ _CET_ENDBR
+#endif
movl 12(%esi),%eax
adcl 12(%edx),%eax
movl %eax,12(%edi)
+#ifdef _CET_ENDBR
+ _CET_ENDBR
+#endif
movl 16(%esi),%eax
adcl 16(%edx),%eax
movl %eax,16(%edi)
+#ifdef _CET_ENDBR
+ _CET_ENDBR
+#endif
movl 20(%esi),%eax
adcl 20(%edx),%eax
movl %eax,20(%edi)
+#ifdef _CET_ENDBR
+ _CET_ENDBR
+#endif
movl 24(%esi),%eax
adcl 24(%edx),%eax
movl %eax,24(%edi)
+#ifdef _CET_ENDBR
+ _CET_ENDBR
+#endif
movl 28(%esi),%eax
adcl 28(%edx),%eax
movl %eax,28(%edi)
@@ -110,6 +141,10 @@ Loop: movl (%esi),%eax
sbbl %eax,%eax
negl %eax
+#if defined __CET__ && (__CET__ & 1) != 0
+ popl %ebx
+#endif
+
popl %esi
popl %edi
ret
diff -up libgcrypt-1.8.5/mpi/i386/mpih-sub1.S.intel-cet libgcrypt-1.8.5/mpi/i386/mpih-sub1.S
--- libgcrypt-1.8.5/mpi/i386/mpih-sub1.S.intel-cet 2017-11-23 19:16:58.000000000 +0100
+++ libgcrypt-1.8.5/mpi/i386/mpih-sub1.S 2020-01-23 15:37:40.472175351 +0100
@@ -53,6 +53,10 @@ C_SYMBOL_NAME(_gcry_mpih_sub_n:)
movl 20(%esp),%edx /* s2_ptr */
movl 24(%esp),%ecx /* size */
+#if defined __CET__ && (__CET__ & 1) != 0
+ pushl %ebx
+#endif
+
movl %ecx,%eax
shrl $3,%ecx /* compute count for unrolled loop */
negl %eax
@@ -64,6 +68,9 @@ C_SYMBOL_NAME(_gcry_mpih_sub_n:)
subl %eax,%esi /* ... by a constant when we ... */
subl %eax,%edx /* ... enter the loop */
shrl $2,%eax /* restore previous value */
+#if defined __CET__ && (__CET__ & 1) != 0
+ 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 */
@@ -76,29 +83,53 @@ L0: leal (%eax,%eax,8),%eax
/* Calculate start address in loop for non-PIC. */
leal (Loop - 3)(%eax,%eax,8),%eax
#endif
+#if defined __CET__ && (__CET__ & 1) != 0
+ addl %ebx,%eax /* Adjust for endbr32 */
+#endif
jmp *%eax /* jump into loop */
ALIGN (3)
Loop: movl (%esi),%eax
sbbl (%edx),%eax
movl %eax,(%edi)
+#ifdef _CET_ENDBR
+ _CET_ENDBR
+#endif
movl 4(%esi),%eax
sbbl 4(%edx),%eax
movl %eax,4(%edi)
+#ifdef _CET_ENDBR
+ _CET_ENDBR
+#endif
movl 8(%esi),%eax
sbbl 8(%edx),%eax
movl %eax,8(%edi)
+#ifdef _CET_ENDBR
+ _CET_ENDBR
+#endif
movl 12(%esi),%eax
sbbl 12(%edx),%eax
movl %eax,12(%edi)
+#ifdef _CET_ENDBR
+ _CET_ENDBR
+#endif
movl 16(%esi),%eax
sbbl 16(%edx),%eax
movl %eax,16(%edi)
+#ifdef _CET_ENDBR
+ _CET_ENDBR
+#endif
movl 20(%esi),%eax
sbbl 20(%edx),%eax
movl %eax,20(%edi)
+#ifdef _CET_ENDBR
+ _CET_ENDBR
+#endif
movl 24(%esi),%eax
sbbl 24(%edx),%eax
movl %eax,24(%edi)
+#ifdef _CET_ENDBR
+ _CET_ENDBR
+#endif
movl 28(%esi),%eax
sbbl 28(%edx),%eax
movl %eax,28(%edi)
@@ -111,6 +142,10 @@ Loop: movl (%esi),%eax
sbbl %eax,%eax
negl %eax
+#if defined __CET__ && (__CET__ & 1) != 0
+ popl %ebx
+#endif
+
popl %esi
popl %edi
ret