diff options
Diffstat (limited to 'src/spdk/intel-ipsec-mb/include/clear_regs.asm')
| -rw-r--r-- | src/spdk/intel-ipsec-mb/include/clear_regs.asm | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/src/spdk/intel-ipsec-mb/include/clear_regs.asm b/src/spdk/intel-ipsec-mb/include/clear_regs.asm new file mode 100644 index 000000000..6cb48c49e --- /dev/null +++ b/src/spdk/intel-ipsec-mb/include/clear_regs.asm @@ -0,0 +1,196 @@ +;; +;; 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. +;; + +%ifndef _CLEAR_REGS_ASM_ +%define _CLEAR_REGS_ASM_ + +%include "include/os.asm" + +; +; This macro clears any GP registers passed +; +%macro clear_gps 1-16 +%define %%NUM_REGS %0 +%rep %%NUM_REGS + xor %1, %1 +%rotate 1 +%endrep +%endmacro + +; +; This macro clears any XMM registers passed on SSE +; +%macro clear_xmms_sse 1-16 +%define %%NUM_REGS %0 +%rep %%NUM_REGS + pxor %1, %1 +%rotate 1 +%endrep +%endmacro + +; +; This macro clears any XMM registers passed on AVX +; +%macro clear_xmms_avx 1-16 +%define %%NUM_REGS %0 +%rep %%NUM_REGS + vpxor %1, %1 +%rotate 1 +%endrep +%endmacro + +; +; This macro clears any YMM registers passed +; +%macro clear_ymms 1-16 +%define %%NUM_REGS %0 +%rep %%NUM_REGS + vpxor %1, %1 +%rotate 1 +%endrep +%endmacro + +; +; This macro clears any ZMM registers passed +; +%macro clear_zmms 1-32 +%define %%NUM_REGS %0 +%rep %%NUM_REGS + vpxorq %1, %1 +%rotate 1 +%endrep +%endmacro + +; +; This macro clears all scratch GP registers +; for Windows or Linux +; +%macro clear_scratch_gps_asm 0 + clear_gps rax, rcx, rdx, r8, r9, r10, r11 +%ifdef LINUX + clear_gps rdi, rsi +%endif +%endmacro + +; +; This macro clears all scratch XMM registers on SSE +; +%macro clear_scratch_xmms_sse_asm 0 +%ifdef LINUX +%assign i 0 +%rep 16 + pxor xmm %+ i, xmm %+ i +%assign i (i+1) +%endrep +; On Windows, XMM0-XMM5 registers are scratch registers +%else +%assign i 0 +%rep 6 + pxor xmm %+ i, xmm %+ i +%assign i (i+1) +%endrep +%endif ; LINUX +%endmacro + +; +; This macro clears all scratch XMM registers on AVX +; +%macro clear_scratch_xmms_avx_asm 0 +%ifdef LINUX + vzeroall +; On Windows, XMM0-XMM5 registers are scratch registers +%else +%assign i 0 +%rep 6 + vpxor xmm %+ i, xmm %+ i +%assign i (i+1) +%endrep +%endif ; LINUX +%endmacro + +; +; This macro clears all scratch YMM registers +; +; It should be called before restoring the XMM registers +; for Windows (XMM6-XMM15) +; +%macro clear_scratch_ymms_asm 0 +; On Linux, all YMM registers are scratch registers +%ifdef LINUX + vzeroall +; On Windows, YMM0-YMM5 registers are scratch registers. +; YMM6-YMM15 upper 128 bits are scratch registers too, but +; the lower 128 bits are to be restored after calling these function +; which clears the upper bits too. +%else +%assign i 0 +%rep 6 + vpxor ymm %+ i, ymm %+ i +%assign i (i+1) +%endrep +%endif ; LINUX +%endmacro + +; +; This macro 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 +; +%macro clear_scratch_zmms_asm 0 +; On Linux, all ZMM registers are scratch registers +%ifdef LINUX + vzeroall + ;; vzeroall only clears the first 16 ZMM registers +%assign i 16 +%rep 16 + vpxorq ymm %+ i, ymm %+ i +%assign i (i+1) +%endrep +; On Windows, ZMM0-ZMM5 and ZMM16-ZMM31 registers are scratch registers. +; ZMM6-ZMM15 upper 384 bits are scratch registers too, but +; the lower 128 bits are to be restored after calling these function +; which clears the upper bits too. +%else +%assign i 0 +%rep 6 + vpxorq ymm %+ i, ymm %+ i +%assign i (i+1) +%endrep + +%assign i 16 +%rep 16 + vpxorq ymm %+ i, ymm %+ i +%assign i (i+1) +%endrep +%endif ; LINUX +%endmacro + +%endif ;; _CLEAR_REGS_ASM |