x86: Add ENDBR32/ENDBR64 at function entries for Intel CET

To support Intel CET, all indirect branch targets must start with
ENDBR32/ENDBR64. Here is a patch to define endbranch and add it to
funct

x86: Add ENDBR32/ENDBR64 at function entries for Intel CET

To support Intel CET, all indirect branch targets must start with
ENDBR32/ENDBR64. Here is a patch to define endbranch and add it to
function entries in x86 assembly codes which are indirect branch
targets as discovered by running testsuite on Intel CET machine and
visual inspection.

Verified with

$ CC="gcc -Wl,-z,cet-report=error -fcf-protection" CXX="g++ -Wl,-z,cet-report=error -fcf-protection" .../configure x86_64-linux
$ make -j8
$ make -j8 check

with both nasm and yasm on both CET and non-CET machines.

Change-Id: I9822578e7294fb5043a64ab7de5c41de81a7d337
Signed-off-by: H.J. Lu <hjl.tools@gmail.com>

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build: Fix for windows to allow nasm use

Previously windows build could only use yasm because some procedural items such
as proc_start were not supported by nasm. This adds a few macros and fixes s

build: Fix for windows to allow nasm use

Previously windows build could only use yasm because some procedural items such
as proc_start were not supported by nasm. This adds a few macros and fixes so
nasm can be used to build on windows.

Change-Id: Ia05dc3ff482f33b0f915bb1be3c7df5e4a753b3a
Signed-off-by: Greg Tucker <greg.b.tucker@intel.com>

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igzip: Add a few missing asm copyright headers

Change-Id: Iddcfbd357efa17dbbd32acacac952579fc052756
Signed-off-by: Greg Tucker <greg.b.tucker@intel.com>

igzip: Add sse optimized adler32 checksum

Change-Id: Id07727b8a8da4b41aa983b487ca881552d5190ee
Signed-off-by: Greg Tucker <greg.b.tucker@intel.com>

igzip: Modify encode_df_04 to behave more like encode_df_06 algorithm

Change-Id: I39c5d0d8182efb0fe8aa6bea97d9361df4ee8ddf
Signed-off-by: Roy Oursler <roy.j.oursler@intel.com>

igzip: Avx512 version for encdode_df

Change-Id: I1625a3d7e016805791cfd09e31909562f432fd71
Signed-off-by: Roy Oursler <roy.j.oursler@intel.com>

igzip: implement igzip two pass

Change-Id: I9564b2da251a02197b39cab5f141e7aff1ae8439
Signed-off-by: Roy Oursler <roy.j.oursler@intel.com>