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1146 lines
29 KiB
1146 lines
29 KiB
;***************************************************************************** |
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;* x86inc.asm: x264asm abstraction layer |
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;***************************************************************************** |
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;* Copyright (C) 2005-2012 x264 project |
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;* |
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;* Authors: Loren Merritt <lorenm@u.washington.edu> |
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;* Anton Mitrofanov <BugMaster@narod.ru> |
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;* Jason Garrett-Glaser <darkshikari@gmail.com> |
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;* Henrik Gramner <hengar-6@student.ltu.se> |
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;* |
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;* Permission to use, copy, modify, and/or distribute this software for any |
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;* purpose with or without fee is hereby granted, provided that the above |
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;* copyright notice and this permission notice appear in all copies. |
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;* |
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;* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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;* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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;* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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;* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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;* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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;* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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;* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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;***************************************************************************** |
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|
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; This is a header file for the x264ASM assembly language, which uses |
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; NASM/YASM syntax combined with a large number of macros to provide easy |
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; abstraction between different calling conventions (x86_32, win64, linux64). |
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; It also has various other useful features to simplify writing the kind of |
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; DSP functions that are most often used in x264. |
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|
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; Unlike the rest of x264, this file is available under an ISC license, as it |
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; has significant usefulness outside of x264 and we want it to be available |
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; to the largest audience possible. Of course, if you modify it for your own |
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; purposes to add a new feature, we strongly encourage contributing a patch |
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; as this feature might be useful for others as well. Send patches or ideas |
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; to x264-devel@videolan.org . |
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%define program_name ff |
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%define WIN64 0 |
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%define UNIX64 0 |
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%if ARCH_X86_64 |
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%ifidn __OUTPUT_FORMAT__,win32 |
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%define WIN64 1 |
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%elifidn __OUTPUT_FORMAT__,win64 |
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%define WIN64 1 |
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%else |
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%define UNIX64 1 |
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%endif |
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%endif |
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%ifdef PREFIX |
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%define mangle(x) _ %+ x |
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%else |
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%define mangle(x) x |
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%endif |
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; Name of the .rodata section. |
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; Kludge: Something on OS X fails to align .rodata even given an align attribute, |
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; so use a different read-only section. |
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%macro SECTION_RODATA 0-1 16 |
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%ifidn __OUTPUT_FORMAT__,macho64 |
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SECTION .text align=%1 |
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%elifidn __OUTPUT_FORMAT__,macho |
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SECTION .text align=%1 |
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fakegot: |
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%elifidn __OUTPUT_FORMAT__,aout |
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section .text |
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%else |
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SECTION .rodata align=%1 |
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%endif |
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%endmacro |
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|
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; aout does not support align= |
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%macro SECTION_TEXT 0-1 16 |
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%ifidn __OUTPUT_FORMAT__,aout |
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SECTION .text |
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%else |
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SECTION .text align=%1 |
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%endif |
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%endmacro |
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%if WIN64 |
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%define PIC |
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%elif ARCH_X86_64 == 0 |
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; x86_32 doesn't require PIC. |
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; Some distros prefer shared objects to be PIC, but nothing breaks if |
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; the code contains a few textrels, so we'll skip that complexity. |
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%undef PIC |
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%endif |
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%ifdef PIC |
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default rel |
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%endif |
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|
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; Always use long nops (reduces 0x90 spam in disassembly on x86_32) |
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CPU amdnop |
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|
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; Macros to eliminate most code duplication between x86_32 and x86_64: |
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; Currently this works only for leaf functions which load all their arguments |
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; into registers at the start, and make no other use of the stack. Luckily that |
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; covers most of x264's asm. |
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; PROLOGUE: |
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; %1 = number of arguments. loads them from stack if needed. |
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; %2 = number of registers used. pushes callee-saved regs if needed. |
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; %3 = number of xmm registers used. pushes callee-saved xmm regs if needed. |
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; %4 = list of names to define to registers |
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; PROLOGUE can also be invoked by adding the same options to cglobal |
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; e.g. |
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; cglobal foo, 2,3,0, dst, src, tmp |
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; declares a function (foo), taking two args (dst and src) and one local variable (tmp) |
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|
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; TODO Some functions can use some args directly from the stack. If they're the |
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; last args then you can just not declare them, but if they're in the middle |
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; we need more flexible macro. |
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; RET: |
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; Pops anything that was pushed by PROLOGUE, and returns. |
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; REP_RET: |
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; Same, but if it doesn't pop anything it becomes a 2-byte ret, for athlons |
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; which are slow when a normal ret follows a branch. |
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; registers: |
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; rN and rNq are the native-size register holding function argument N |
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; rNd, rNw, rNb are dword, word, and byte size |
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; rNh is the high 8 bits of the word size |
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; rNm is the original location of arg N (a register or on the stack), dword |
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; rNmp is native size |
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%macro DECLARE_REG 2-3 |
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%define r%1q %2 |
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%define r%1d %2d |
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%define r%1w %2w |
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%define r%1b %2b |
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%define r%1h %2h |
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%if %0 == 2 |
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%define r%1m %2d |
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%define r%1mp %2 |
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%elif ARCH_X86_64 ; memory |
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%define r%1m [rsp + stack_offset + %3] |
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%define r%1mp qword r %+ %1m |
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%else |
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%define r%1m [esp + stack_offset + %3] |
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%define r%1mp dword r %+ %1m |
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%endif |
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%define r%1 %2 |
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%endmacro |
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|
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%macro DECLARE_REG_SIZE 3 |
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%define r%1q r%1 |
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%define e%1q r%1 |
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%define r%1d e%1 |
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%define e%1d e%1 |
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%define r%1w %1 |
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%define e%1w %1 |
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%define r%1h %3 |
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%define e%1h %3 |
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%define r%1b %2 |
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%define e%1b %2 |
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%if ARCH_X86_64 == 0 |
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%define r%1 e%1 |
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%endif |
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%endmacro |
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DECLARE_REG_SIZE ax, al, ah |
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DECLARE_REG_SIZE bx, bl, bh |
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DECLARE_REG_SIZE cx, cl, ch |
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DECLARE_REG_SIZE dx, dl, dh |
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DECLARE_REG_SIZE si, sil, null |
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DECLARE_REG_SIZE di, dil, null |
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DECLARE_REG_SIZE bp, bpl, null |
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|
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; t# defines for when per-arch register allocation is more complex than just function arguments |
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%macro DECLARE_REG_TMP 1-* |
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%assign %%i 0 |
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%rep %0 |
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CAT_XDEFINE t, %%i, r%1 |
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%assign %%i %%i+1 |
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%rotate 1 |
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%endrep |
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%endmacro |
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%macro DECLARE_REG_TMP_SIZE 0-* |
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%rep %0 |
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%define t%1q t%1 %+ q |
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%define t%1d t%1 %+ d |
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%define t%1w t%1 %+ w |
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%define t%1h t%1 %+ h |
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%define t%1b t%1 %+ b |
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%rotate 1 |
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%endrep |
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%endmacro |
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DECLARE_REG_TMP_SIZE 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14 |
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%if ARCH_X86_64 |
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%define gprsize 8 |
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%else |
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%define gprsize 4 |
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%endif |
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%macro PUSH 1 |
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push %1 |
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%assign stack_offset stack_offset+gprsize |
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%endmacro |
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%macro POP 1 |
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pop %1 |
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%assign stack_offset stack_offset-gprsize |
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%endmacro |
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%macro PUSH_IF_USED 1-* |
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%rep %0 |
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%if %1 < regs_used |
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PUSH r%1 |
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%endif |
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%rotate 1 |
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%endrep |
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%endmacro |
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%macro POP_IF_USED 1-* |
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%rep %0 |
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%if %1 < regs_used |
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pop r%1 |
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%endif |
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%rotate 1 |
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%endrep |
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%endmacro |
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%macro LOAD_IF_USED 1-* |
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%rep %0 |
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%if %1 < num_args |
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mov r%1, r %+ %1 %+ mp |
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%endif |
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%rotate 1 |
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%endrep |
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%endmacro |
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%macro SUB 2 |
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sub %1, %2 |
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%ifidn %1, rsp |
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%assign stack_offset stack_offset+(%2) |
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%endif |
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%endmacro |
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%macro ADD 2 |
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add %1, %2 |
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%ifidn %1, rsp |
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%assign stack_offset stack_offset-(%2) |
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%endif |
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%endmacro |
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%macro movifnidn 2 |
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%ifnidn %1, %2 |
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mov %1, %2 |
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%endif |
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%endmacro |
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%macro movsxdifnidn 2 |
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%ifnidn %1, %2 |
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movsxd %1, %2 |
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%endif |
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%endmacro |
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%macro ASSERT 1 |
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%if (%1) == 0 |
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%error assert failed |
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%endif |
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%endmacro |
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%macro DEFINE_ARGS 0-* |
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%ifdef n_arg_names |
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%assign %%i 0 |
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%rep n_arg_names |
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CAT_UNDEF arg_name %+ %%i, q |
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CAT_UNDEF arg_name %+ %%i, d |
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CAT_UNDEF arg_name %+ %%i, w |
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CAT_UNDEF arg_name %+ %%i, h |
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CAT_UNDEF arg_name %+ %%i, b |
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CAT_UNDEF arg_name %+ %%i, m |
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CAT_UNDEF arg_name %+ %%i, mp |
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CAT_UNDEF arg_name, %%i |
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%assign %%i %%i+1 |
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%endrep |
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%endif |
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%xdefine %%stack_offset stack_offset |
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%undef stack_offset ; so that the current value of stack_offset doesn't get baked in by xdefine |
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%assign %%i 0 |
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%rep %0 |
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%xdefine %1q r %+ %%i %+ q |
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%xdefine %1d r %+ %%i %+ d |
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%xdefine %1w r %+ %%i %+ w |
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%xdefine %1h r %+ %%i %+ h |
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%xdefine %1b r %+ %%i %+ b |
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%xdefine %1m r %+ %%i %+ m |
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%xdefine %1mp r %+ %%i %+ mp |
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CAT_XDEFINE arg_name, %%i, %1 |
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%assign %%i %%i+1 |
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%rotate 1 |
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%endrep |
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%xdefine stack_offset %%stack_offset |
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%assign n_arg_names %0 |
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%endmacro |
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%if WIN64 ; Windows x64 ;================================================= |
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DECLARE_REG 0, rcx |
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DECLARE_REG 1, rdx |
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DECLARE_REG 2, R8 |
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DECLARE_REG 3, R9 |
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DECLARE_REG 4, R10, 40 |
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DECLARE_REG 5, R11, 48 |
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DECLARE_REG 6, rax, 56 |
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DECLARE_REG 7, rdi, 64 |
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DECLARE_REG 8, rsi, 72 |
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DECLARE_REG 9, rbx, 80 |
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DECLARE_REG 10, rbp, 88 |
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DECLARE_REG 11, R12, 96 |
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DECLARE_REG 12, R13, 104 |
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DECLARE_REG 13, R14, 112 |
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DECLARE_REG 14, R15, 120 |
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%macro PROLOGUE 2-4+ 0 ; #args, #regs, #xmm_regs, arg_names... |
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%assign num_args %1 |
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%assign regs_used %2 |
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ASSERT regs_used >= num_args |
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ASSERT regs_used <= 15 |
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PUSH_IF_USED 7, 8, 9, 10, 11, 12, 13, 14 |
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%if mmsize == 8 |
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%assign xmm_regs_used 0 |
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%else |
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WIN64_SPILL_XMM %3 |
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%endif |
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LOAD_IF_USED 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 |
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DEFINE_ARGS %4 |
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%endmacro |
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%macro WIN64_SPILL_XMM 1 |
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%assign xmm_regs_used %1 |
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ASSERT xmm_regs_used <= 16 |
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%if xmm_regs_used > 6 |
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SUB rsp, (xmm_regs_used-6)*16+16 |
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%assign %%i xmm_regs_used |
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%rep (xmm_regs_used-6) |
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%assign %%i %%i-1 |
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movdqa [rsp + (%%i-6)*16+(~stack_offset&8)], xmm %+ %%i |
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%endrep |
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%endif |
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%endmacro |
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%macro WIN64_RESTORE_XMM_INTERNAL 1 |
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%if xmm_regs_used > 6 |
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%assign %%i xmm_regs_used |
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%rep (xmm_regs_used-6) |
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%assign %%i %%i-1 |
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movdqa xmm %+ %%i, [%1 + (%%i-6)*16+(~stack_offset&8)] |
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%endrep |
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add %1, (xmm_regs_used-6)*16+16 |
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%endif |
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%endmacro |
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%macro WIN64_RESTORE_XMM 1 |
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WIN64_RESTORE_XMM_INTERNAL %1 |
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%assign stack_offset stack_offset-(xmm_regs_used-6)*16+16 |
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%assign xmm_regs_used 0 |
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%endmacro |
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%define has_epilogue regs_used > 7 || xmm_regs_used > 6 || mmsize == 32 |
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%macro RET 0 |
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WIN64_RESTORE_XMM_INTERNAL rsp |
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POP_IF_USED 14, 13, 12, 11, 10, 9, 8, 7 |
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%if mmsize == 32 |
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vzeroupper |
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%endif |
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ret |
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%endmacro |
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%elif ARCH_X86_64 ; *nix x64 ;============================================= |
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DECLARE_REG 0, rdi |
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DECLARE_REG 1, rsi |
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DECLARE_REG 2, rdx |
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DECLARE_REG 3, rcx |
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DECLARE_REG 4, R8 |
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DECLARE_REG 5, R9 |
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DECLARE_REG 6, rax, 8 |
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DECLARE_REG 7, R10, 16 |
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DECLARE_REG 8, R11, 24 |
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DECLARE_REG 9, rbx, 32 |
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DECLARE_REG 10, rbp, 40 |
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DECLARE_REG 11, R12, 48 |
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DECLARE_REG 12, R13, 56 |
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DECLARE_REG 13, R14, 64 |
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DECLARE_REG 14, R15, 72 |
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|
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%macro PROLOGUE 2-4+ ; #args, #regs, #xmm_regs, arg_names... |
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%assign num_args %1 |
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%assign regs_used %2 |
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ASSERT regs_used >= num_args |
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ASSERT regs_used <= 15 |
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PUSH_IF_USED 9, 10, 11, 12, 13, 14 |
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LOAD_IF_USED 6, 7, 8, 9, 10, 11, 12, 13, 14 |
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DEFINE_ARGS %4 |
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%endmacro |
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|
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%define has_epilogue regs_used > 9 || mmsize == 32 |
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|
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%macro RET 0 |
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POP_IF_USED 14, 13, 12, 11, 10, 9 |
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%if mmsize == 32 |
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vzeroupper |
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%endif |
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ret |
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%endmacro |
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|
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%else ; X86_32 ;============================================================== |
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|
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DECLARE_REG 0, eax, 4 |
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DECLARE_REG 1, ecx, 8 |
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DECLARE_REG 2, edx, 12 |
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DECLARE_REG 3, ebx, 16 |
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DECLARE_REG 4, esi, 20 |
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DECLARE_REG 5, edi, 24 |
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DECLARE_REG 6, ebp, 28 |
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%define rsp esp |
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|
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%macro DECLARE_ARG 1-* |
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%rep %0 |
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%define r%1m [esp + stack_offset + 4*%1 + 4] |
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%define r%1mp dword r%1m |
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%rotate 1 |
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%endrep |
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%endmacro |
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DECLARE_ARG 7, 8, 9, 10, 11, 12, 13, 14 |
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|
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%macro PROLOGUE 2-4+ ; #args, #regs, #xmm_regs, arg_names... |
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%assign num_args %1 |
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%assign regs_used %2 |
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%if regs_used > 7 |
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%assign regs_used 7 |
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%endif |
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ASSERT regs_used >= num_args |
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PUSH_IF_USED 3, 4, 5, 6 |
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LOAD_IF_USED 0, 1, 2, 3, 4, 5, 6 |
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DEFINE_ARGS %4 |
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%endmacro |
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|
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%define has_epilogue regs_used > 3 || mmsize == 32 |
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|
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%macro RET 0 |
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POP_IF_USED 6, 5, 4, 3 |
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%if mmsize == 32 |
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vzeroupper |
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%endif |
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ret |
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%endmacro |
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|
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%endif ;====================================================================== |
|
|
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%if WIN64 == 0 |
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%macro WIN64_SPILL_XMM 1 |
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%endmacro |
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%macro WIN64_RESTORE_XMM 1 |
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%endmacro |
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%endif |
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|
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%macro REP_RET 0 |
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%if has_epilogue |
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RET |
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%else |
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rep ret |
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%endif |
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%endmacro |
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|
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%macro TAIL_CALL 2 ; callee, is_nonadjacent |
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%if has_epilogue |
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call %1 |
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RET |
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%elif %2 |
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jmp %1 |
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%endif |
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%endmacro |
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|
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;============================================================================= |
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; arch-independent part |
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;============================================================================= |
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|
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%assign function_align 16 |
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|
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; Begin a function. |
|
; Applies any symbol mangling needed for C linkage, and sets up a define such that |
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; subsequent uses of the function name automatically refer to the mangled version. |
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; Appends cpuflags to the function name if cpuflags has been specified. |
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%macro cglobal 1-2+ ; name, [PROLOGUE args] |
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%if %0 == 1 |
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cglobal_internal %1 %+ SUFFIX |
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%else |
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cglobal_internal %1 %+ SUFFIX, %2 |
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%endif |
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%endmacro |
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%macro cglobal_internal 1-2+ |
|
%ifndef cglobaled_%1 |
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%xdefine %1 mangle(program_name %+ _ %+ %1) |
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%xdefine %1.skip_prologue %1 %+ .skip_prologue |
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CAT_XDEFINE cglobaled_, %1, 1 |
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%endif |
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%xdefine current_function %1 |
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%ifidn __OUTPUT_FORMAT__,elf |
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global %1:function hidden |
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%else |
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global %1 |
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%endif |
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align function_align |
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%1: |
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RESET_MM_PERMUTATION ; not really needed, but makes disassembly somewhat nicer |
|
%assign stack_offset 0 |
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%if %0 > 1 |
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PROLOGUE %2 |
|
%endif |
|
%endmacro |
|
|
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%macro cextern 1 |
|
%xdefine %1 mangle(program_name %+ _ %+ %1) |
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CAT_XDEFINE cglobaled_, %1, 1 |
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extern %1 |
|
%endmacro |
|
|
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; like cextern, but without the prefix |
|
%macro cextern_naked 1 |
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%xdefine %1 mangle(%1) |
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CAT_XDEFINE cglobaled_, %1, 1 |
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extern %1 |
|
%endmacro |
|
|
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%macro const 2+ |
|
%xdefine %1 mangle(program_name %+ _ %+ %1) |
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global %1 |
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%1: %2 |
|
%endmacro |
|
|
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; This is needed for ELF, otherwise the GNU linker assumes the stack is |
|
; executable by default. |
|
%ifidn __OUTPUT_FORMAT__,elf |
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SECTION .note.GNU-stack noalloc noexec nowrite progbits |
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%endif |
|
|
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; cpuflags |
|
|
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%assign cpuflags_mmx (1<<0) |
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%assign cpuflags_mmx2 (1<<1) | cpuflags_mmx |
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%assign cpuflags_3dnow (1<<2) | cpuflags_mmx |
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%assign cpuflags_3dnow2 (1<<3) | cpuflags_3dnow |
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%assign cpuflags_sse (1<<4) | cpuflags_mmx2 |
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%assign cpuflags_sse2 (1<<5) | cpuflags_sse |
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%assign cpuflags_sse2slow (1<<6) | cpuflags_sse2 |
|
%assign cpuflags_sse3 (1<<7) | cpuflags_sse2 |
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%assign cpuflags_ssse3 (1<<8) | cpuflags_sse3 |
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%assign cpuflags_sse4 (1<<9) | cpuflags_ssse3 |
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%assign cpuflags_sse42 (1<<10)| cpuflags_sse4 |
|
%assign cpuflags_avx (1<<11)| cpuflags_sse42 |
|
%assign cpuflags_xop (1<<12)| cpuflags_avx |
|
%assign cpuflags_fma4 (1<<13)| cpuflags_avx |
|
%assign cpuflags_avx2 (1<<14)| cpuflags_avx |
|
%assign cpuflags_fma3 (1<<15)| cpuflags_avx |
|
|
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%assign cpuflags_cache32 (1<<16) |
|
%assign cpuflags_cache64 (1<<17) |
|
%assign cpuflags_slowctz (1<<18) |
|
%assign cpuflags_lzcnt (1<<19) |
|
%assign cpuflags_misalign (1<<20) |
|
%assign cpuflags_aligned (1<<21) ; not a cpu feature, but a function variant |
|
%assign cpuflags_atom (1<<22) |
|
%assign cpuflags_bmi1 (1<<23) |
|
%assign cpuflags_bmi2 (1<<24)|cpuflags_bmi1 |
|
%assign cpuflags_tbm (1<<25)|cpuflags_bmi1 |
|
|
|
%define cpuflag(x) ((cpuflags & (cpuflags_ %+ x)) == (cpuflags_ %+ x)) |
|
%define notcpuflag(x) ((cpuflags & (cpuflags_ %+ x)) != (cpuflags_ %+ x)) |
|
|
|
; Takes up to 2 cpuflags from the above list. |
|
; All subsequent functions (up to the next INIT_CPUFLAGS) is built for the specified cpu. |
|
; You shouldn't need to invoke this macro directly, it's a subroutine for INIT_MMX &co. |
|
%macro INIT_CPUFLAGS 0-2 |
|
CPU amdnop |
|
%if %0 >= 1 |
|
%xdefine cpuname %1 |
|
%assign cpuflags cpuflags_%1 |
|
%if %0 >= 2 |
|
%xdefine cpuname %1_%2 |
|
%assign cpuflags cpuflags | cpuflags_%2 |
|
%endif |
|
%xdefine SUFFIX _ %+ cpuname |
|
%if cpuflag(avx) |
|
%assign avx_enabled 1 |
|
%endif |
|
%if mmsize == 16 && notcpuflag(sse2) |
|
%define mova movaps |
|
%define movu movups |
|
%define movnta movntps |
|
%endif |
|
%if cpuflag(aligned) |
|
%define movu mova |
|
%elifidn %1, sse3 |
|
%define movu lddqu |
|
%endif |
|
%if notcpuflag(mmx2) |
|
CPU basicnop |
|
%endif |
|
%else |
|
%xdefine SUFFIX |
|
%undef cpuname |
|
%undef cpuflags |
|
%endif |
|
%endmacro |
|
|
|
; merge mmx and sse* |
|
|
|
%macro CAT_XDEFINE 3 |
|
%xdefine %1%2 %3 |
|
%endmacro |
|
|
|
%macro CAT_UNDEF 2 |
|
%undef %1%2 |
|
%endmacro |
|
|
|
%macro INIT_MMX 0-1+ |
|
%assign avx_enabled 0 |
|
%define RESET_MM_PERMUTATION INIT_MMX %1 |
|
%define mmsize 8 |
|
%define num_mmregs 8 |
|
%define mova movq |
|
%define movu movq |
|
%define movh movd |
|
%define movnta movntq |
|
%assign %%i 0 |
|
%rep 8 |
|
CAT_XDEFINE m, %%i, mm %+ %%i |
|
CAT_XDEFINE nmm, %%i, %%i |
|
%assign %%i %%i+1 |
|
%endrep |
|
%rep 8 |
|
CAT_UNDEF m, %%i |
|
CAT_UNDEF nmm, %%i |
|
%assign %%i %%i+1 |
|
%endrep |
|
INIT_CPUFLAGS %1 |
|
%endmacro |
|
|
|
%macro INIT_XMM 0-1+ |
|
%assign avx_enabled 0 |
|
%define RESET_MM_PERMUTATION INIT_XMM %1 |
|
%define mmsize 16 |
|
%define num_mmregs 8 |
|
%if ARCH_X86_64 |
|
%define num_mmregs 16 |
|
%endif |
|
%define mova movdqa |
|
%define movu movdqu |
|
%define movh movq |
|
%define movnta movntdq |
|
%assign %%i 0 |
|
%rep num_mmregs |
|
CAT_XDEFINE m, %%i, xmm %+ %%i |
|
CAT_XDEFINE nxmm, %%i, %%i |
|
%assign %%i %%i+1 |
|
%endrep |
|
INIT_CPUFLAGS %1 |
|
%endmacro |
|
|
|
; FIXME: INIT_AVX can be replaced by INIT_XMM avx |
|
%macro INIT_AVX 0 |
|
INIT_XMM |
|
%assign avx_enabled 1 |
|
%define PALIGNR PALIGNR_SSSE3 |
|
%define RESET_MM_PERMUTATION INIT_AVX |
|
%endmacro |
|
|
|
%macro INIT_YMM 0-1+ |
|
%assign avx_enabled 1 |
|
%define RESET_MM_PERMUTATION INIT_YMM %1 |
|
%define mmsize 32 |
|
%define num_mmregs 8 |
|
%if ARCH_X86_64 |
|
%define num_mmregs 16 |
|
%endif |
|
%define mova vmovaps |
|
%define movu vmovups |
|
%undef movh |
|
%define movnta vmovntps |
|
%assign %%i 0 |
|
%rep num_mmregs |
|
CAT_XDEFINE m, %%i, ymm %+ %%i |
|
CAT_XDEFINE nymm, %%i, %%i |
|
%assign %%i %%i+1 |
|
%endrep |
|
INIT_CPUFLAGS %1 |
|
%endmacro |
|
|
|
INIT_XMM |
|
|
|
; I often want to use macros that permute their arguments. e.g. there's no |
|
; efficient way to implement butterfly or transpose or dct without swapping some |
|
; arguments. |
|
; |
|
; I would like to not have to manually keep track of the permutations: |
|
; If I insert a permutation in the middle of a function, it should automatically |
|
; change everything that follows. For more complex macros I may also have multiple |
|
; implementations, e.g. the SSE2 and SSSE3 versions may have different permutations. |
|
; |
|
; Hence these macros. Insert a PERMUTE or some SWAPs at the end of a macro that |
|
; permutes its arguments. It's equivalent to exchanging the contents of the |
|
; registers, except that this way you exchange the register names instead, so it |
|
; doesn't cost any cycles. |
|
|
|
%macro PERMUTE 2-* ; takes a list of pairs to swap |
|
%rep %0/2 |
|
%xdefine tmp%2 m%2 |
|
%xdefine ntmp%2 nm%2 |
|
%rotate 2 |
|
%endrep |
|
%rep %0/2 |
|
%xdefine m%1 tmp%2 |
|
%xdefine nm%1 ntmp%2 |
|
%undef tmp%2 |
|
%undef ntmp%2 |
|
%rotate 2 |
|
%endrep |
|
%endmacro |
|
|
|
%macro SWAP 2-* ; swaps a single chain (sometimes more concise than pairs) |
|
%rep %0-1 |
|
%ifdef m%1 |
|
%xdefine tmp m%1 |
|
%xdefine m%1 m%2 |
|
%xdefine m%2 tmp |
|
CAT_XDEFINE n, m%1, %1 |
|
CAT_XDEFINE n, m%2, %2 |
|
%else |
|
; If we were called as "SWAP m0,m1" rather than "SWAP 0,1" infer the original numbers here. |
|
; Be careful using this mode in nested macros though, as in some cases there may be |
|
; other copies of m# that have already been dereferenced and don't get updated correctly. |
|
%xdefine %%n1 n %+ %1 |
|
%xdefine %%n2 n %+ %2 |
|
%xdefine tmp m %+ %%n1 |
|
CAT_XDEFINE m, %%n1, m %+ %%n2 |
|
CAT_XDEFINE m, %%n2, tmp |
|
CAT_XDEFINE n, m %+ %%n1, %%n1 |
|
CAT_XDEFINE n, m %+ %%n2, %%n2 |
|
%endif |
|
%undef tmp |
|
%rotate 1 |
|
%endrep |
|
%endmacro |
|
|
|
; If SAVE_MM_PERMUTATION is placed at the end of a function, then any later |
|
; calls to that function will automatically load the permutation, so values can |
|
; be returned in mmregs. |
|
%macro SAVE_MM_PERMUTATION 0-1 |
|
%if %0 |
|
%xdefine %%f %1_m |
|
%else |
|
%xdefine %%f current_function %+ _m |
|
%endif |
|
%assign %%i 0 |
|
%rep num_mmregs |
|
CAT_XDEFINE %%f, %%i, m %+ %%i |
|
%assign %%i %%i+1 |
|
%endrep |
|
%endmacro |
|
|
|
%macro LOAD_MM_PERMUTATION 1 ; name to load from |
|
%ifdef %1_m0 |
|
%assign %%i 0 |
|
%rep num_mmregs |
|
CAT_XDEFINE m, %%i, %1_m %+ %%i |
|
CAT_XDEFINE n, m %+ %%i, %%i |
|
%assign %%i %%i+1 |
|
%endrep |
|
%endif |
|
%endmacro |
|
|
|
; Append cpuflags to the callee's name iff the appended name is known and the plain name isn't |
|
%macro call 1 |
|
call_internal %1, %1 %+ SUFFIX |
|
%endmacro |
|
%macro call_internal 2 |
|
%xdefine %%i %1 |
|
%ifndef cglobaled_%1 |
|
%ifdef cglobaled_%2 |
|
%xdefine %%i %2 |
|
%endif |
|
%endif |
|
call %%i |
|
LOAD_MM_PERMUTATION %%i |
|
%endmacro |
|
|
|
; Substitutions that reduce instruction size but are functionally equivalent |
|
%macro add 2 |
|
%ifnum %2 |
|
%if %2==128 |
|
sub %1, -128 |
|
%else |
|
add %1, %2 |
|
%endif |
|
%else |
|
add %1, %2 |
|
%endif |
|
%endmacro |
|
|
|
%macro sub 2 |
|
%ifnum %2 |
|
%if %2==128 |
|
add %1, -128 |
|
%else |
|
sub %1, %2 |
|
%endif |
|
%else |
|
sub %1, %2 |
|
%endif |
|
%endmacro |
|
|
|
;============================================================================= |
|
; AVX abstraction layer |
|
;============================================================================= |
|
|
|
%assign i 0 |
|
%rep 16 |
|
%if i < 8 |
|
CAT_XDEFINE sizeofmm, i, 8 |
|
%endif |
|
CAT_XDEFINE sizeofxmm, i, 16 |
|
CAT_XDEFINE sizeofymm, i, 32 |
|
%assign i i+1 |
|
%endrep |
|
%undef i |
|
|
|
%macro CHECK_AVX_INSTR_EMU 3-* |
|
%xdefine %%opcode %1 |
|
%xdefine %%dst %2 |
|
%rep %0-2 |
|
%ifidn %%dst, %3 |
|
%error non-avx emulation of ``%%opcode'' is not supported |
|
%endif |
|
%rotate 1 |
|
%endrep |
|
%endmacro |
|
|
|
;%1 == instruction |
|
;%2 == 1 if float, 0 if int |
|
;%3 == 1 if 4-operand (xmm, xmm, xmm, imm), 0 if 2- or 3-operand (xmm, xmm, xmm) |
|
;%4 == number of operands given |
|
;%5+: operands |
|
%macro RUN_AVX_INSTR 6-7+ |
|
%ifid %6 |
|
%define %%sizeofreg sizeof%6 |
|
%elifid %5 |
|
%define %%sizeofreg sizeof%5 |
|
%else |
|
%define %%sizeofreg mmsize |
|
%endif |
|
%if %%sizeofreg==32 |
|
%if %4>=3 |
|
v%1 %5, %6, %7 |
|
%else |
|
v%1 %5, %6 |
|
%endif |
|
%else |
|
%if %%sizeofreg==8 |
|
%define %%regmov movq |
|
%elif %2 |
|
%define %%regmov movaps |
|
%else |
|
%define %%regmov movdqa |
|
%endif |
|
|
|
%if %4>=3+%3 |
|
%ifnidn %5, %6 |
|
%if avx_enabled && %%sizeofreg==16 |
|
v%1 %5, %6, %7 |
|
%else |
|
CHECK_AVX_INSTR_EMU {%1 %5, %6, %7}, %5, %7 |
|
%%regmov %5, %6 |
|
%1 %5, %7 |
|
%endif |
|
%else |
|
%1 %5, %7 |
|
%endif |
|
%elif %4>=3 |
|
%1 %5, %6, %7 |
|
%else |
|
%1 %5, %6 |
|
%endif |
|
%endif |
|
%endmacro |
|
|
|
; 3arg AVX ops with a memory arg can only have it in src2, |
|
; whereas SSE emulation of 3arg prefers to have it in src1 (i.e. the mov). |
|
; So, if the op is symmetric and the wrong one is memory, swap them. |
|
%macro RUN_AVX_INSTR1 8 |
|
%assign %%swap 0 |
|
%if avx_enabled |
|
%ifnid %6 |
|
%assign %%swap 1 |
|
%endif |
|
%elifnidn %5, %6 |
|
%ifnid %7 |
|
%assign %%swap 1 |
|
%endif |
|
%endif |
|
%if %%swap && %3 == 0 && %8 == 1 |
|
RUN_AVX_INSTR %1, %2, %3, %4, %5, %7, %6 |
|
%else |
|
RUN_AVX_INSTR %1, %2, %3, %4, %5, %6, %7 |
|
%endif |
|
%endmacro |
|
|
|
;%1 == instruction |
|
;%2 == 1 if float, 0 if int |
|
;%3 == 1 if 4-operand (xmm, xmm, xmm, imm), 0 if 2- or 3-operand (xmm, xmm, xmm) |
|
;%4 == 1 if symmetric (i.e. doesn't matter which src arg is which), 0 if not |
|
%macro AVX_INSTR 4 |
|
%macro %1 2-9 fnord, fnord, fnord, %1, %2, %3, %4 |
|
%ifidn %3, fnord |
|
RUN_AVX_INSTR %6, %7, %8, 2, %1, %2 |
|
%elifidn %4, fnord |
|
RUN_AVX_INSTR1 %6, %7, %8, 3, %1, %2, %3, %9 |
|
%elifidn %5, fnord |
|
RUN_AVX_INSTR %6, %7, %8, 4, %1, %2, %3, %4 |
|
%else |
|
RUN_AVX_INSTR %6, %7, %8, 5, %1, %2, %3, %4, %5 |
|
%endif |
|
%endmacro |
|
%endmacro |
|
|
|
AVX_INSTR addpd, 1, 0, 1 |
|
AVX_INSTR addps, 1, 0, 1 |
|
AVX_INSTR addsd, 1, 0, 1 |
|
AVX_INSTR addss, 1, 0, 1 |
|
AVX_INSTR addsubpd, 1, 0, 0 |
|
AVX_INSTR addsubps, 1, 0, 0 |
|
AVX_INSTR andpd, 1, 0, 1 |
|
AVX_INSTR andps, 1, 0, 1 |
|
AVX_INSTR andnpd, 1, 0, 0 |
|
AVX_INSTR andnps, 1, 0, 0 |
|
AVX_INSTR blendpd, 1, 0, 0 |
|
AVX_INSTR blendps, 1, 0, 0 |
|
AVX_INSTR blendvpd, 1, 0, 0 |
|
AVX_INSTR blendvps, 1, 0, 0 |
|
AVX_INSTR cmppd, 1, 0, 0 |
|
AVX_INSTR cmpps, 1, 0, 0 |
|
AVX_INSTR cmpsd, 1, 0, 0 |
|
AVX_INSTR cmpss, 1, 0, 0 |
|
AVX_INSTR cvtdq2ps, 1, 0, 0 |
|
AVX_INSTR cvtps2dq, 1, 0, 0 |
|
AVX_INSTR divpd, 1, 0, 0 |
|
AVX_INSTR divps, 1, 0, 0 |
|
AVX_INSTR divsd, 1, 0, 0 |
|
AVX_INSTR divss, 1, 0, 0 |
|
AVX_INSTR dppd, 1, 1, 0 |
|
AVX_INSTR dpps, 1, 1, 0 |
|
AVX_INSTR haddpd, 1, 0, 0 |
|
AVX_INSTR haddps, 1, 0, 0 |
|
AVX_INSTR hsubpd, 1, 0, 0 |
|
AVX_INSTR hsubps, 1, 0, 0 |
|
AVX_INSTR maxpd, 1, 0, 1 |
|
AVX_INSTR maxps, 1, 0, 1 |
|
AVX_INSTR maxsd, 1, 0, 1 |
|
AVX_INSTR maxss, 1, 0, 1 |
|
AVX_INSTR minpd, 1, 0, 1 |
|
AVX_INSTR minps, 1, 0, 1 |
|
AVX_INSTR minsd, 1, 0, 1 |
|
AVX_INSTR minss, 1, 0, 1 |
|
AVX_INSTR movhlps, 1, 0, 0 |
|
AVX_INSTR movlhps, 1, 0, 0 |
|
AVX_INSTR movsd, 1, 0, 0 |
|
AVX_INSTR movss, 1, 0, 0 |
|
AVX_INSTR mpsadbw, 0, 1, 0 |
|
AVX_INSTR mulpd, 1, 0, 1 |
|
AVX_INSTR mulps, 1, 0, 1 |
|
AVX_INSTR mulsd, 1, 0, 1 |
|
AVX_INSTR mulss, 1, 0, 1 |
|
AVX_INSTR orpd, 1, 0, 1 |
|
AVX_INSTR orps, 1, 0, 1 |
|
AVX_INSTR pabsb, 0, 0, 0 |
|
AVX_INSTR pabsw, 0, 0, 0 |
|
AVX_INSTR pabsd, 0, 0, 0 |
|
AVX_INSTR packsswb, 0, 0, 0 |
|
AVX_INSTR packssdw, 0, 0, 0 |
|
AVX_INSTR packuswb, 0, 0, 0 |
|
AVX_INSTR packusdw, 0, 0, 0 |
|
AVX_INSTR paddb, 0, 0, 1 |
|
AVX_INSTR paddw, 0, 0, 1 |
|
AVX_INSTR paddd, 0, 0, 1 |
|
AVX_INSTR paddq, 0, 0, 1 |
|
AVX_INSTR paddsb, 0, 0, 1 |
|
AVX_INSTR paddsw, 0, 0, 1 |
|
AVX_INSTR paddusb, 0, 0, 1 |
|
AVX_INSTR paddusw, 0, 0, 1 |
|
AVX_INSTR palignr, 0, 1, 0 |
|
AVX_INSTR pand, 0, 0, 1 |
|
AVX_INSTR pandn, 0, 0, 0 |
|
AVX_INSTR pavgb, 0, 0, 1 |
|
AVX_INSTR pavgw, 0, 0, 1 |
|
AVX_INSTR pblendvb, 0, 0, 0 |
|
AVX_INSTR pblendw, 0, 1, 0 |
|
AVX_INSTR pcmpestri, 0, 0, 0 |
|
AVX_INSTR pcmpestrm, 0, 0, 0 |
|
AVX_INSTR pcmpistri, 0, 0, 0 |
|
AVX_INSTR pcmpistrm, 0, 0, 0 |
|
AVX_INSTR pcmpeqb, 0, 0, 1 |
|
AVX_INSTR pcmpeqw, 0, 0, 1 |
|
AVX_INSTR pcmpeqd, 0, 0, 1 |
|
AVX_INSTR pcmpeqq, 0, 0, 1 |
|
AVX_INSTR pcmpgtb, 0, 0, 0 |
|
AVX_INSTR pcmpgtw, 0, 0, 0 |
|
AVX_INSTR pcmpgtd, 0, 0, 0 |
|
AVX_INSTR pcmpgtq, 0, 0, 0 |
|
AVX_INSTR phaddw, 0, 0, 0 |
|
AVX_INSTR phaddd, 0, 0, 0 |
|
AVX_INSTR phaddsw, 0, 0, 0 |
|
AVX_INSTR phsubw, 0, 0, 0 |
|
AVX_INSTR phsubd, 0, 0, 0 |
|
AVX_INSTR phsubsw, 0, 0, 0 |
|
AVX_INSTR pmaddwd, 0, 0, 1 |
|
AVX_INSTR pmaddubsw, 0, 0, 0 |
|
AVX_INSTR pmaxsb, 0, 0, 1 |
|
AVX_INSTR pmaxsw, 0, 0, 1 |
|
AVX_INSTR pmaxsd, 0, 0, 1 |
|
AVX_INSTR pmaxub, 0, 0, 1 |
|
AVX_INSTR pmaxuw, 0, 0, 1 |
|
AVX_INSTR pmaxud, 0, 0, 1 |
|
AVX_INSTR pminsb, 0, 0, 1 |
|
AVX_INSTR pminsw, 0, 0, 1 |
|
AVX_INSTR pminsd, 0, 0, 1 |
|
AVX_INSTR pminub, 0, 0, 1 |
|
AVX_INSTR pminuw, 0, 0, 1 |
|
AVX_INSTR pminud, 0, 0, 1 |
|
AVX_INSTR pmovmskb, 0, 0, 0 |
|
AVX_INSTR pmulhuw, 0, 0, 1 |
|
AVX_INSTR pmulhrsw, 0, 0, 1 |
|
AVX_INSTR pmulhw, 0, 0, 1 |
|
AVX_INSTR pmullw, 0, 0, 1 |
|
AVX_INSTR pmulld, 0, 0, 1 |
|
AVX_INSTR pmuludq, 0, 0, 1 |
|
AVX_INSTR pmuldq, 0, 0, 1 |
|
AVX_INSTR por, 0, 0, 1 |
|
AVX_INSTR psadbw, 0, 0, 1 |
|
AVX_INSTR pshufb, 0, 0, 0 |
|
AVX_INSTR pshufd, 0, 1, 0 |
|
AVX_INSTR pshufhw, 0, 1, 0 |
|
AVX_INSTR pshuflw, 0, 1, 0 |
|
AVX_INSTR psignb, 0, 0, 0 |
|
AVX_INSTR psignw, 0, 0, 0 |
|
AVX_INSTR psignd, 0, 0, 0 |
|
AVX_INSTR psllw, 0, 0, 0 |
|
AVX_INSTR pslld, 0, 0, 0 |
|
AVX_INSTR psllq, 0, 0, 0 |
|
AVX_INSTR pslldq, 0, 0, 0 |
|
AVX_INSTR psraw, 0, 0, 0 |
|
AVX_INSTR psrad, 0, 0, 0 |
|
AVX_INSTR psrlw, 0, 0, 0 |
|
AVX_INSTR psrld, 0, 0, 0 |
|
AVX_INSTR psrlq, 0, 0, 0 |
|
AVX_INSTR psrldq, 0, 0, 0 |
|
AVX_INSTR psubb, 0, 0, 0 |
|
AVX_INSTR psubw, 0, 0, 0 |
|
AVX_INSTR psubd, 0, 0, 0 |
|
AVX_INSTR psubq, 0, 0, 0 |
|
AVX_INSTR psubsb, 0, 0, 0 |
|
AVX_INSTR psubsw, 0, 0, 0 |
|
AVX_INSTR psubusb, 0, 0, 0 |
|
AVX_INSTR psubusw, 0, 0, 0 |
|
AVX_INSTR ptest, 0, 0, 0 |
|
AVX_INSTR punpckhbw, 0, 0, 0 |
|
AVX_INSTR punpckhwd, 0, 0, 0 |
|
AVX_INSTR punpckhdq, 0, 0, 0 |
|
AVX_INSTR punpckhqdq, 0, 0, 0 |
|
AVX_INSTR punpcklbw, 0, 0, 0 |
|
AVX_INSTR punpcklwd, 0, 0, 0 |
|
AVX_INSTR punpckldq, 0, 0, 0 |
|
AVX_INSTR punpcklqdq, 0, 0, 0 |
|
AVX_INSTR pxor, 0, 0, 1 |
|
AVX_INSTR shufps, 1, 1, 0 |
|
AVX_INSTR subpd, 1, 0, 0 |
|
AVX_INSTR subps, 1, 0, 0 |
|
AVX_INSTR subsd, 1, 0, 0 |
|
AVX_INSTR subss, 1, 0, 0 |
|
AVX_INSTR unpckhpd, 1, 0, 0 |
|
AVX_INSTR unpckhps, 1, 0, 0 |
|
AVX_INSTR unpcklpd, 1, 0, 0 |
|
AVX_INSTR unpcklps, 1, 0, 0 |
|
AVX_INSTR xorpd, 1, 0, 1 |
|
AVX_INSTR xorps, 1, 0, 1 |
|
|
|
; 3DNow instructions, for sharing code between AVX, SSE and 3DN |
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AVX_INSTR pfadd, 1, 0, 1 |
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AVX_INSTR pfsub, 1, 0, 0 |
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AVX_INSTR pfmul, 1, 0, 1 |
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; base-4 constants for shuffles |
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%assign i 0 |
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%rep 256 |
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%assign j ((i>>6)&3)*1000 + ((i>>4)&3)*100 + ((i>>2)&3)*10 + (i&3) |
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%if j < 10 |
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CAT_XDEFINE q000, j, i |
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%elif j < 100 |
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CAT_XDEFINE q00, j, i |
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%elif j < 1000 |
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CAT_XDEFINE q0, j, i |
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%else |
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CAT_XDEFINE q, j, i |
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%endif |
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%assign i i+1 |
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%endrep |
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%undef i |
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%undef j |
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%macro FMA_INSTR 3 |
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%macro %1 5-8 %1, %2, %3 |
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%if cpuflag(xop) || cpuflag(fma4) |
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v%6 %1, %2, %3, %4 |
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%else |
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%ifidn %1, %4 |
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%7 %5, %2, %3 |
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%8 %1, %4, %5 |
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%else |
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%7 %1, %2, %3 |
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%8 %1, %4 |
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%endif |
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%endif |
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%endmacro |
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%endmacro |
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FMA_INSTR fmaddps, mulps, addps |
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FMA_INSTR pmacsdd, pmulld, paddd |
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FMA_INSTR pmacsww, pmullw, paddw |
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FMA_INSTR pmadcswd, pmaddwd, paddd |
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; tzcnt is equivalent to "rep bsf" and is backwards-compatible with bsf. |
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; This lets us use tzcnt without bumping the yasm version requirement yet. |
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%define tzcnt rep bsf
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