1 files changed, 124 insertions, 0 deletions
diff --git a/src/spdk/intel-ipsec-mb/include/clear_regs_mem_fns.asm b/src/spdk/intel-ipsec-mb/include/clear_regs_mem_fns.asm
new file mode 100644
index 000000000..4fd6f7edb
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+++ b/src/spdk/intel-ipsec-mb/include/clear_regs_mem_fns.asm
@@ -0,0 +1,124 @@
+;;
+;; Copyright (c) 2019, Intel Corporation
+;;
+;; Redistribution and use in source and binary forms, with or without
+;; modification, are permitted provided that the following conditions are met:
+;;
+;;     * Redistributions of source code must retain the above copyright notice,
+;;       this list of conditions and the following disclaimer.
+;;     * Redistributions in binary form must reproduce the above copyright
+;;       notice, this list of conditions and the following disclaimer in the
+;;       documentation and/or other materials provided with the distribution.
+;;     * Neither the name of Intel Corporation nor the names of its contributors
+;;       may be used to endorse or promote products derived from this software
+;;       without specific prior written permission.
+;;
+;; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+;; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+;; IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+;; DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
+;; FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+;; DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+;; SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+;; CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+;; OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+;; OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+;;
+
+%include "include/os.asm"
+%include "include/clear_regs.asm"
+
+section .text
+;
+; This function clears all scratch GP registers
+;
+; void clear_scratch_gps(void)
+MKGLOBAL(clear_scratch_gps,function,internal)
+clear_scratch_gps:
+
+        clear_scratch_gps_asm
+
+        ret
+
+;
+; This function clears all scratch XMM registers
+;
+; void clear_scratch_xmms_sse(void)
+MKGLOBAL(clear_scratch_xmms_sse,function,internal)
+clear_scratch_xmms_sse:
+
+        clear_scratch_xmms_sse_asm
+
+        ret
+
+;
+; This function clears all scratch XMM registers
+;
+; It should be called before restoring the XMM registers
+; for Windows (XMM6-XMM15)
+;
+; void clear_scratch_xmms_avx(void)
+MKGLOBAL(clear_scratch_xmms_avx,function,internal)
+clear_scratch_xmms_avx:
+
+        clear_scratch_xmms_avx_asm
+
+        ret
+
+;
+; This function clears all scratch YMM registers
+;
+; It should be called before restoring the XMM registers
+; for Windows (XMM6-XMM15)
+;
+; void clear_scratch_ymms(void)
+MKGLOBAL(clear_scratch_ymms,function,internal)
+clear_scratch_ymms:
+
+        clear_scratch_ymms_asm
+
+        ret
+
+;
+; This function clears all scratch ZMM registers
+;
+; It should be called before restoring the XMM registers
+; for Windows (XMM6-XMM15). YMM registers are used
+; on purpose, since XOR'ing YMM registers is faster
+; than XOR'ing ZMM registers, and the operation clears
+; also the upper 256 bits
+;
+; void clear_scratch_zmms(void)
+MKGLOBAL(clear_scratch_zmms,function,internal)
+clear_scratch_zmms:
+
+        clear_scratch_zmms_asm
+
+        ret
+
+;
+; This function clears all memory passed
+;
+; void force_memset_zero(void *mem, const size_t size)
+MKGLOBAL(force_memset_zero,function,internal)
+force_memset_zero:
+
+%ifdef LINUX
+        mov rcx, rsi
+%else
+        push rdi
+        mov rdi, rcx
+        mov rcx, rdx
+%endif
+        xor eax, eax
+        cld
+        rep stosb
+
+%ifndef LINUX
+        pop rdi
+%endif
+        ret
+
+%ifdef LINUX
+section .note.GNU-stack noalloc noexec nowrite progbits
+%endif