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			895 lines
		
	
	
		
			22 KiB
		
	
	
	
		
			NASM
		
	
	
	
	
	
			
		
		
	
	
			895 lines
		
	
	
		
			22 KiB
		
	
	
	
		
			NASM
		
	
	
	
	
	
| ;*****************************************************************************
 | |
| ;* x86inc.asm
 | |
| ;*****************************************************************************
 | |
| ;* Copyright (C) 2005-2011 x264 project
 | |
| ;*
 | |
| ;* Authors: Loren Merritt <lorenm@u.washington.edu>
 | |
| ;*          Anton Mitrofanov <BugMaster@narod.ru>
 | |
| ;*          Jason Garrett-Glaser <darkshikari@gmail.com>
 | |
| ;*
 | |
| ;* Permission to use, copy, modify, and/or distribute this software for any
 | |
| ;* purpose with or without fee is hereby granted, provided that the above
 | |
| ;* copyright notice and this permission notice appear in all copies.
 | |
| ;*
 | |
| ;* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 | |
| ;* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 | |
| ;* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 | |
| ;* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 | |
| ;* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 | |
| ;* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 | |
| ;* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 | |
| ;*****************************************************************************
 | |
| 
 | |
| ; This is a header file for the x264ASM assembly language, which uses
 | |
| ; NASM/YASM syntax combined with a large number of macros to provide easy
 | |
| ; abstraction between different calling conventions (x86_32, win64, linux64).
 | |
| ; 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.
 | |
| 
 | |
| ; 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
 | |
| ; to the largest audience possible.  Of course, if you modify it for your own
 | |
| ; 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 .
 | |
| 
 | |
| %define program_name ff
 | |
| 
 | |
| %ifdef ARCH_X86_64
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|     %ifidn __OUTPUT_FORMAT__,win32
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|         %define WIN64
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|     %else
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|         %define UNIX64
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|     %endif
 | |
| %endif
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| 
 | |
| %ifdef PREFIX
 | |
|     %define mangle(x) _ %+ x
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| %else
 | |
|     %define mangle(x) x
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| %endif
 | |
| 
 | |
| ; FIXME: All of the 64bit asm functions that take a stride as an argument
 | |
| ; via register, assume that the high dword of that register is filled with 0.
 | |
| ; This is true in practice (since we never do any 64bit arithmetic on strides,
 | |
| ; and x264's strides are all positive), but is not guaranteed by the ABI.
 | |
| 
 | |
| ; 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.
 | |
| %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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|     %else
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|         SECTION .rodata align=%1
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|     %endif
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| %endmacro
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| 
 | |
| %ifdef WIN64
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|     %define PIC
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| %elifndef ARCH_X86_64
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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
 | |
| ; 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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| 
 | |
| ; Macros to eliminate most code duplication between x86_32 and x86_64:
 | |
| ; 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.
 | |
| ; %4 = list of names to define to registers
 | |
| ; PROLOGUE can also be invoked by adding the same options to cglobal
 | |
| 
 | |
| ; e.g.
 | |
| ; cglobal foo, 2,3,0, dst, src, tmp
 | |
| ; declares a function (foo), taking two args (dst and src) and one local variable (tmp)
 | |
| 
 | |
| ; TODO Some functions can use some args directly from the stack. If they're the
 | |
| ; last args then you can just not declare them, but if they're in the middle
 | |
| ; we need more flexible macro.
 | |
| 
 | |
| ; RET:
 | |
| ; Pops anything that was pushed by PROLOGUE
 | |
| 
 | |
| ; REP_RET:
 | |
| ; Same, but if it doesn't pop anything it becomes a 2-byte ret, for athlons
 | |
| ; which are slow when a normal ret follows a branch.
 | |
| 
 | |
| ; registers:
 | |
| ; rN and rNq are the native-size register holding function argument N
 | |
| ; rNd, rNw, rNb are dword, word, and byte size
 | |
| ; rNm is the original location of arg N (a register or on the stack), dword
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| ; rNmp is native size
 | |
| 
 | |
| %macro DECLARE_REG 6
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|     %define r%1q %2
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|     %define r%1d %3
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|     %define r%1w %4
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|     %define r%1b %5
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|     %define r%1m %6
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|     %ifid %6 ; i.e. it's a register
 | |
|         %define r%1mp %2
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|     %elifdef ARCH_X86_64 ; memory
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|         %define r%1mp qword %6
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|     %else
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|         %define r%1mp dword %6
 | |
|     %endif
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|     %define r%1  %2
 | |
| %endmacro
 | |
| 
 | |
| %macro DECLARE_REG_SIZE 2
 | |
|     %define r%1q r%1
 | |
|     %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%1b %2
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|     %define e%1b %2
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| %ifndef ARCH_X86_64
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|     %define r%1  e%1
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| %endif
 | |
| %endmacro
 | |
| 
 | |
| DECLARE_REG_SIZE ax, al
 | |
| DECLARE_REG_SIZE bx, bl
 | |
| DECLARE_REG_SIZE cx, cl
 | |
| DECLARE_REG_SIZE dx, dl
 | |
| DECLARE_REG_SIZE si, sil
 | |
| DECLARE_REG_SIZE di, dil
 | |
| DECLARE_REG_SIZE bp, bpl
 | |
| 
 | |
| ; t# defines for when per-arch register allocation is more complex than just function arguments
 | |
| 
 | |
| %macro DECLARE_REG_TMP 1-*
 | |
|     %assign %%i 0
 | |
|     %rep %0
 | |
|         CAT_XDEFINE t, %%i, r%1
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|         %assign %%i %%i+1
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|         %rotate 1
 | |
|     %endrep
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| %endmacro
 | |
| 
 | |
| %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
 | |
|         %define t%1w t%1 %+ w
 | |
|         %define t%1b t%1 %+ b
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|         %rotate 1
 | |
|     %endrep
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| %endmacro
 | |
| 
 | |
| DECLARE_REG_TMP_SIZE 0,1,2,3,4,5,6,7,8,9
 | |
| 
 | |
| %ifdef ARCH_X86_64
 | |
|     %define gprsize 8
 | |
| %else
 | |
|     %define gprsize 4
 | |
| %endif
 | |
| 
 | |
| %macro PUSH 1
 | |
|     push %1
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|     %assign stack_offset stack_offset+gprsize
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| %endmacro
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| 
 | |
| %macro POP 1
 | |
|     pop %1
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|     %assign stack_offset stack_offset-gprsize
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| %endmacro
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| 
 | |
| %macro SUB 2
 | |
|     sub %1, %2
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|     %ifidn %1, rsp
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|         %assign stack_offset stack_offset+(%2)
 | |
|     %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)
 | |
|     %endif
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| %endmacro
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| 
 | |
| %macro movifnidn 2
 | |
|     %ifnidn %1, %2
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|         mov %1, %2
 | |
|     %endif
 | |
| %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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| 
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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, b
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|             CAT_UNDEF arg_name %+ %%i, m
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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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| 
 | |
|     %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 %1b r %+ %%i %+ b
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|         %xdefine %1m r %+ %%i %+ m
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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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|     %assign n_arg_names %%i
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| %endmacro
 | |
| 
 | |
| %ifdef WIN64 ; Windows x64 ;=================================================
 | |
| 
 | |
| DECLARE_REG 0, rcx, ecx, cx,  cl,  ecx
 | |
| DECLARE_REG 1, rdx, edx, dx,  dl,  edx
 | |
| DECLARE_REG 2, r8,  r8d, r8w, r8b, r8d
 | |
| DECLARE_REG 3, r9,  r9d, r9w, r9b, r9d
 | |
| DECLARE_REG 4, rdi, edi, di,  dil, [rsp + stack_offset + 40]
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| DECLARE_REG 5, rsi, esi, si,  sil, [rsp + stack_offset + 48]
 | |
| DECLARE_REG 6, rax, eax, ax,  al,  [rsp + stack_offset + 56]
 | |
| %define r7m [rsp + stack_offset + 64]
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| %define r8m [rsp + stack_offset + 72]
 | |
| 
 | |
| %macro LOAD_IF_USED 2 ; reg_id, number_of_args
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|     %if %1 < %2
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|         mov r%1, [rsp + stack_offset + 8 + %1*8]
 | |
|     %endif
 | |
| %endmacro
 | |
| 
 | |
| %macro PROLOGUE 2-4+ 0 ; #args, #regs, #xmm_regs, arg_names...
 | |
|     ASSERT %2 >= %1
 | |
|     %assign regs_used %2
 | |
|     ASSERT regs_used <= 7
 | |
|     %if regs_used > 4
 | |
|         push r4
 | |
|         push r5
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|         %assign stack_offset stack_offset+16
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|     %endif
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|     WIN64_SPILL_XMM %3
 | |
|     LOAD_IF_USED 4, %1
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|     LOAD_IF_USED 5, %1
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|     LOAD_IF_USED 6, %1
 | |
|     DEFINE_ARGS %4
 | |
| %endmacro
 | |
| 
 | |
| %macro WIN64_SPILL_XMM 1
 | |
|     %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 stack_offset stack_offset+(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+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
 | |
|     %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+8]
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|         %endrep
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|         add %1, (xmm_regs_used-6)*16+16
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|     %endif
 | |
| %endmacro
 | |
| 
 | |
| %macro WIN64_RESTORE_XMM 1
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|     WIN64_RESTORE_XMM_INTERNAL %1
 | |
|     %assign stack_offset stack_offset-(xmm_regs_used-6)*16+16
 | |
|     %assign xmm_regs_used 0
 | |
| %endmacro
 | |
| 
 | |
| %macro RET 0
 | |
|     WIN64_RESTORE_XMM_INTERNAL rsp
 | |
|     %if regs_used > 4
 | |
|         pop r5
 | |
|         pop r4
 | |
|     %endif
 | |
|     ret
 | |
| %endmacro
 | |
| 
 | |
| %macro REP_RET 0
 | |
|     %if regs_used > 4 || xmm_regs_used > 6
 | |
|         RET
 | |
|     %else
 | |
|         rep ret
 | |
|     %endif
 | |
| %endmacro
 | |
| 
 | |
| %elifdef ARCH_X86_64 ; *nix x64 ;=============================================
 | |
| 
 | |
| DECLARE_REG 0, rdi, edi, di,  dil, edi
 | |
| DECLARE_REG 1, rsi, esi, si,  sil, esi
 | |
| DECLARE_REG 2, rdx, edx, dx,  dl,  edx
 | |
| DECLARE_REG 3, rcx, ecx, cx,  cl,  ecx
 | |
| DECLARE_REG 4, r8,  r8d, r8w, r8b, r8d
 | |
| DECLARE_REG 5, r9,  r9d, r9w, r9b, r9d
 | |
| DECLARE_REG 6, rax, eax, ax,  al,  [rsp + stack_offset + 8]
 | |
| %define r7m [rsp + stack_offset + 16]
 | |
| %define r8m [rsp + stack_offset + 24]
 | |
| 
 | |
| %macro LOAD_IF_USED 2 ; reg_id, number_of_args
 | |
|     %if %1 < %2
 | |
|         mov r%1, [rsp - 40 + %1*8]
 | |
|     %endif
 | |
| %endmacro
 | |
| 
 | |
| %macro PROLOGUE 2-4+ ; #args, #regs, #xmm_regs, arg_names...
 | |
|     ASSERT %2 >= %1
 | |
|     ASSERT %2 <= 7
 | |
|     LOAD_IF_USED 6, %1
 | |
|     DEFINE_ARGS %4
 | |
| %endmacro
 | |
| 
 | |
| %macro RET 0
 | |
|     ret
 | |
| %endmacro
 | |
| 
 | |
| %macro REP_RET 0
 | |
|     rep ret
 | |
| %endmacro
 | |
| 
 | |
| %else ; X86_32 ;==============================================================
 | |
| 
 | |
| DECLARE_REG 0, eax, eax, ax, al,   [esp + stack_offset + 4]
 | |
| DECLARE_REG 1, ecx, ecx, cx, cl,   [esp + stack_offset + 8]
 | |
| DECLARE_REG 2, edx, edx, dx, dl,   [esp + stack_offset + 12]
 | |
| DECLARE_REG 3, ebx, ebx, bx, bl,   [esp + stack_offset + 16]
 | |
| DECLARE_REG 4, esi, esi, si, null, [esp + stack_offset + 20]
 | |
| DECLARE_REG 5, edi, edi, di, null, [esp + stack_offset + 24]
 | |
| DECLARE_REG 6, ebp, ebp, bp, null, [esp + stack_offset + 28]
 | |
| %define r7m [esp + stack_offset + 32]
 | |
| %define r8m [esp + stack_offset + 36]
 | |
| %define rsp esp
 | |
| 
 | |
| %macro PUSH_IF_USED 1 ; reg_id
 | |
|     %if %1 < regs_used
 | |
|         push r%1
 | |
|         %assign stack_offset stack_offset+4
 | |
|     %endif
 | |
| %endmacro
 | |
| 
 | |
| %macro POP_IF_USED 1 ; reg_id
 | |
|     %if %1 < regs_used
 | |
|         pop r%1
 | |
|     %endif
 | |
| %endmacro
 | |
| 
 | |
| %macro LOAD_IF_USED 2 ; reg_id, number_of_args
 | |
|     %if %1 < %2
 | |
|         mov r%1, [esp + stack_offset + 4 + %1*4]
 | |
|     %endif
 | |
| %endmacro
 | |
| 
 | |
| %macro PROLOGUE 2-4+ ; #args, #regs, #xmm_regs, arg_names...
 | |
|     ASSERT %2 >= %1
 | |
|     %assign regs_used %2
 | |
|     ASSERT regs_used <= 7
 | |
|     PUSH_IF_USED 3
 | |
|     PUSH_IF_USED 4
 | |
|     PUSH_IF_USED 5
 | |
|     PUSH_IF_USED 6
 | |
|     LOAD_IF_USED 0, %1
 | |
|     LOAD_IF_USED 1, %1
 | |
|     LOAD_IF_USED 2, %1
 | |
|     LOAD_IF_USED 3, %1
 | |
|     LOAD_IF_USED 4, %1
 | |
|     LOAD_IF_USED 5, %1
 | |
|     LOAD_IF_USED 6, %1
 | |
|     DEFINE_ARGS %4
 | |
| %endmacro
 | |
| 
 | |
| %macro RET 0
 | |
|     POP_IF_USED 6
 | |
|     POP_IF_USED 5
 | |
|     POP_IF_USED 4
 | |
|     POP_IF_USED 3
 | |
|     ret
 | |
| %endmacro
 | |
| 
 | |
| %macro REP_RET 0
 | |
|     %if regs_used > 3
 | |
|         RET
 | |
|     %else
 | |
|         rep ret
 | |
|     %endif
 | |
| %endmacro
 | |
| 
 | |
| %endif ;======================================================================
 | |
| 
 | |
| %ifndef WIN64
 | |
| %macro WIN64_SPILL_XMM 1
 | |
| %endmacro
 | |
| %macro WIN64_RESTORE_XMM 1
 | |
| %endmacro
 | |
| %endif
 | |
| 
 | |
| 
 | |
| 
 | |
| ;=============================================================================
 | |
| ; arch-independent part
 | |
| ;=============================================================================
 | |
| 
 | |
| %assign function_align 16
 | |
| 
 | |
| ; Symbol prefix for C linkage
 | |
| %macro cglobal 1-2+
 | |
|     %xdefine %1 mangle(program_name %+ _ %+ %1)
 | |
|     %xdefine %1.skip_prologue %1 %+ .skip_prologue
 | |
|     %ifidn __OUTPUT_FORMAT__,elf
 | |
|         global %1:function hidden
 | |
|     %else
 | |
|         global %1
 | |
|     %endif
 | |
|     align function_align
 | |
|     %1:
 | |
|     RESET_MM_PERMUTATION ; not really needed, but makes disassembly somewhat nicer
 | |
|     %assign stack_offset 0
 | |
|     %if %0 > 1
 | |
|         PROLOGUE %2
 | |
|     %endif
 | |
| %endmacro
 | |
| 
 | |
| %macro cextern 1
 | |
|     %xdefine %1 mangle(program_name %+ _ %+ %1)
 | |
|     extern %1
 | |
| %endmacro
 | |
| 
 | |
| ;like cextern, but without the prefix
 | |
| %macro cextern_naked 1
 | |
|     %xdefine %1 mangle(%1)
 | |
|     extern %1
 | |
| %endmacro
 | |
| 
 | |
| %macro const 2+
 | |
|     %xdefine %1 mangle(program_name %+ _ %+ %1)
 | |
|     global %1
 | |
|     %1: %2
 | |
| %endmacro
 | |
| 
 | |
| ; This is needed for ELF, otherwise the GNU linker assumes the stack is
 | |
| ; executable by default.
 | |
| %ifidn __OUTPUT_FORMAT__,elf
 | |
| SECTION .note.GNU-stack noalloc noexec nowrite progbits
 | |
| %endif
 | |
| 
 | |
| ; 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
 | |
|     %assign avx_enabled 0
 | |
|     %define RESET_MM_PERMUTATION INIT_MMX
 | |
|     %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
 | |
| %endmacro
 | |
| 
 | |
| %macro INIT_XMM 0
 | |
|     %assign avx_enabled 0
 | |
|     %define RESET_MM_PERMUTATION INIT_XMM
 | |
|     %define mmsize 16
 | |
|     %define num_mmregs 8
 | |
|     %ifdef 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
 | |
| %endmacro
 | |
| 
 | |
| %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
 | |
|     %assign avx_enabled 1
 | |
|     %define RESET_MM_PERMUTATION INIT_YMM
 | |
|     %define mmsize 32
 | |
|     %define num_mmregs 8
 | |
|     %ifdef ARCH_X86_64
 | |
|     %define num_mmregs 16
 | |
|     %endif
 | |
|     %define mova vmovaps
 | |
|     %define movu vmovups
 | |
|     %assign %%i 0
 | |
|     %rep num_mmregs
 | |
|     CAT_XDEFINE m, %%i, ymm %+ %%i
 | |
|     CAT_XDEFINE nymm, %%i, %%i
 | |
|     %assign %%i %%i+1
 | |
|     %endrep
 | |
| %endmacro
 | |
| 
 | |
| INIT_MMX
 | |
| 
 | |
| ; 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 and given the
 | |
| ; function name, then any later calls to that function will automatically
 | |
| ; load the permutation, so values can be returned in mmregs.
 | |
| %macro SAVE_MM_PERMUTATION 1 ; name to save as
 | |
|     %assign %%i 0
 | |
|     %rep num_mmregs
 | |
|     CAT_XDEFINE %1_m, %%i, m %+ %%i
 | |
|     %assign %%i %%i+1
 | |
|     %endrep
 | |
| %endmacro
 | |
| 
 | |
| %macro LOAD_MM_PERMUTATION 1 ; name to load from
 | |
|     %assign %%i 0
 | |
|     %rep num_mmregs
 | |
|     CAT_XDEFINE m, %%i, %1_m %+ %%i
 | |
|     CAT_XDEFINE n, m %+ %%i, %%i
 | |
|     %assign %%i %%i+1
 | |
|     %endrep
 | |
| %endmacro
 | |
| 
 | |
| %macro call 1
 | |
|     call %1
 | |
|     %ifdef %1_m0
 | |
|         LOAD_MM_PERMUTATION %1
 | |
|     %endif
 | |
| %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
 | |
| 
 | |
| ;%1 == instruction
 | |
| ;%2 == 1 if float, 0 if int
 | |
| ;%3 == 0 if 3-operand (xmm, xmm, xmm), 1 if 4-operand (xmm, xmm, xmm, imm)
 | |
| ;%4 == number of operands given
 | |
| ;%5+: operands
 | |
| %macro RUN_AVX_INSTR 6-7+
 | |
|     %if sizeof%5==32
 | |
|         v%1 %5, %6, %7
 | |
|     %else
 | |
|         %if sizeof%5==8
 | |
|             %define %%regmov movq
 | |
|         %elif %2
 | |
|             %define %%regmov movaps
 | |
|         %else
 | |
|             %define %%regmov movdqa
 | |
|         %endif
 | |
| 
 | |
|         %if %4>=3+%3
 | |
|             %ifnidn %5, %6
 | |
|                 %if avx_enabled && sizeof%5==16
 | |
|                     v%1 %5, %6, %7
 | |
|                 %else
 | |
|                     %%regmov %5, %6
 | |
|                     %1 %5, %7
 | |
|                 %endif
 | |
|             %else
 | |
|                 %1 %5, %7
 | |
|             %endif
 | |
|         %elif %3
 | |
|             %1 %5, %6, %7
 | |
|         %else
 | |
|             %1 %5, %6
 | |
|         %endif
 | |
|     %endif
 | |
| %endmacro
 | |
| 
 | |
| ;%1 == instruction
 | |
| ;%2 == 1 if float, 0 if int
 | |
| ;%3 == 0 if 3-operand (xmm, xmm, xmm), 1 if 4-operand (xmm, xmm, xmm, imm)
 | |
| %macro AVX_INSTR 3
 | |
|     %macro %1 2-8 fnord, fnord, fnord, %1, %2, %3
 | |
|         %ifidn %3, fnord
 | |
|             RUN_AVX_INSTR %6, %7, %8, 2, %1, %2
 | |
|         %elifidn %4, fnord
 | |
|             RUN_AVX_INSTR %6, %7, %8, 3, %1, %2, %3
 | |
|         %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
 | |
| AVX_INSTR addps, 1, 0
 | |
| AVX_INSTR addsd, 1, 0
 | |
| AVX_INSTR addss, 1, 0
 | |
| AVX_INSTR addsubpd, 1, 0
 | |
| AVX_INSTR addsubps, 1, 0
 | |
| AVX_INSTR andpd, 1, 0
 | |
| AVX_INSTR andps, 1, 0
 | |
| AVX_INSTR andnpd, 1, 0
 | |
| AVX_INSTR andnps, 1, 0
 | |
| AVX_INSTR blendpd, 1, 0
 | |
| AVX_INSTR blendps, 1, 0
 | |
| AVX_INSTR blendvpd, 1, 0
 | |
| AVX_INSTR blendvps, 1, 0
 | |
| AVX_INSTR cmppd, 1, 0
 | |
| AVX_INSTR cmpps, 1, 0
 | |
| AVX_INSTR cmpsd, 1, 0
 | |
| AVX_INSTR cmpss, 1, 0
 | |
| AVX_INSTR divpd, 1, 0
 | |
| AVX_INSTR divps, 1, 0
 | |
| AVX_INSTR divsd, 1, 0
 | |
| AVX_INSTR divss, 1, 0
 | |
| AVX_INSTR dppd, 1, 0
 | |
| AVX_INSTR dpps, 1, 0
 | |
| AVX_INSTR haddpd, 1, 0
 | |
| AVX_INSTR haddps, 1, 0
 | |
| AVX_INSTR hsubpd, 1, 0
 | |
| AVX_INSTR hsubps, 1, 0
 | |
| AVX_INSTR maxpd, 1, 0
 | |
| AVX_INSTR maxps, 1, 0
 | |
| AVX_INSTR maxsd, 1, 0
 | |
| AVX_INSTR maxss, 1, 0
 | |
| AVX_INSTR minpd, 1, 0
 | |
| AVX_INSTR minps, 1, 0
 | |
| AVX_INSTR minsd, 1, 0
 | |
| AVX_INSTR minss, 1, 0
 | |
| AVX_INSTR mpsadbw, 0, 1
 | |
| AVX_INSTR mulpd, 1, 0
 | |
| AVX_INSTR mulps, 1, 0
 | |
| AVX_INSTR mulsd, 1, 0
 | |
| AVX_INSTR mulss, 1, 0
 | |
| AVX_INSTR orpd, 1, 0
 | |
| AVX_INSTR orps, 1, 0
 | |
| AVX_INSTR packsswb, 0, 0
 | |
| AVX_INSTR packssdw, 0, 0
 | |
| AVX_INSTR packuswb, 0, 0
 | |
| AVX_INSTR packusdw, 0, 0
 | |
| AVX_INSTR paddb, 0, 0
 | |
| AVX_INSTR paddw, 0, 0
 | |
| AVX_INSTR paddd, 0, 0
 | |
| AVX_INSTR paddq, 0, 0
 | |
| AVX_INSTR paddsb, 0, 0
 | |
| AVX_INSTR paddsw, 0, 0
 | |
| AVX_INSTR paddusb, 0, 0
 | |
| AVX_INSTR paddusw, 0, 0
 | |
| AVX_INSTR palignr, 0, 1
 | |
| AVX_INSTR pand, 0, 0
 | |
| AVX_INSTR pandn, 0, 0
 | |
| AVX_INSTR pavgb, 0, 0
 | |
| AVX_INSTR pavgw, 0, 0
 | |
| AVX_INSTR pblendvb, 0, 0
 | |
| AVX_INSTR pblendw, 0, 1
 | |
| AVX_INSTR pcmpestri, 0, 0
 | |
| AVX_INSTR pcmpestrm, 0, 0
 | |
| AVX_INSTR pcmpistri, 0, 0
 | |
| AVX_INSTR pcmpistrm, 0, 0
 | |
| AVX_INSTR pcmpeqb, 0, 0
 | |
| AVX_INSTR pcmpeqw, 0, 0
 | |
| AVX_INSTR pcmpeqd, 0, 0
 | |
| AVX_INSTR pcmpeqq, 0, 0
 | |
| AVX_INSTR pcmpgtb, 0, 0
 | |
| AVX_INSTR pcmpgtw, 0, 0
 | |
| AVX_INSTR pcmpgtd, 0, 0
 | |
| AVX_INSTR pcmpgtq, 0, 0
 | |
| AVX_INSTR phaddw, 0, 0
 | |
| AVX_INSTR phaddd, 0, 0
 | |
| AVX_INSTR phaddsw, 0, 0
 | |
| AVX_INSTR phsubw, 0, 0
 | |
| AVX_INSTR phsubd, 0, 0
 | |
| AVX_INSTR phsubsw, 0, 0
 | |
| AVX_INSTR pmaddwd, 0, 0
 | |
| AVX_INSTR pmaddubsw, 0, 0
 | |
| AVX_INSTR pmaxsb, 0, 0
 | |
| AVX_INSTR pmaxsw, 0, 0
 | |
| AVX_INSTR pmaxsd, 0, 0
 | |
| AVX_INSTR pmaxub, 0, 0
 | |
| AVX_INSTR pmaxuw, 0, 0
 | |
| AVX_INSTR pmaxud, 0, 0
 | |
| AVX_INSTR pminsb, 0, 0
 | |
| AVX_INSTR pminsw, 0, 0
 | |
| AVX_INSTR pminsd, 0, 0
 | |
| AVX_INSTR pminub, 0, 0
 | |
| AVX_INSTR pminuw, 0, 0
 | |
| AVX_INSTR pminud, 0, 0
 | |
| AVX_INSTR pmulhuw, 0, 0
 | |
| AVX_INSTR pmulhrsw, 0, 0
 | |
| AVX_INSTR pmulhw, 0, 0
 | |
| AVX_INSTR pmullw, 0, 0
 | |
| AVX_INSTR pmulld, 0, 0
 | |
| AVX_INSTR pmuludq, 0, 0
 | |
| AVX_INSTR pmuldq, 0, 0
 | |
| AVX_INSTR por, 0, 0
 | |
| AVX_INSTR psadbw, 0, 0
 | |
| AVX_INSTR pshufb, 0, 0
 | |
| AVX_INSTR psignb, 0, 0
 | |
| AVX_INSTR psignw, 0, 0
 | |
| AVX_INSTR psignd, 0, 0
 | |
| AVX_INSTR psllw, 0, 0
 | |
| AVX_INSTR pslld, 0, 0
 | |
| AVX_INSTR psllq, 0, 0
 | |
| AVX_INSTR pslldq, 0, 0
 | |
| AVX_INSTR psraw, 0, 0
 | |
| AVX_INSTR psrad, 0, 0
 | |
| AVX_INSTR psrlw, 0, 0
 | |
| AVX_INSTR psrld, 0, 0
 | |
| AVX_INSTR psrlq, 0, 0
 | |
| AVX_INSTR psrldq, 0, 0
 | |
| AVX_INSTR psubb, 0, 0
 | |
| AVX_INSTR psubw, 0, 0
 | |
| AVX_INSTR psubd, 0, 0
 | |
| AVX_INSTR psubq, 0, 0
 | |
| AVX_INSTR psubsb, 0, 0
 | |
| AVX_INSTR psubsw, 0, 0
 | |
| AVX_INSTR psubusb, 0, 0
 | |
| AVX_INSTR psubusw, 0, 0
 | |
| AVX_INSTR punpckhbw, 0, 0
 | |
| AVX_INSTR punpckhwd, 0, 0
 | |
| AVX_INSTR punpckhdq, 0, 0
 | |
| AVX_INSTR punpckhqdq, 0, 0
 | |
| AVX_INSTR punpcklbw, 0, 0
 | |
| AVX_INSTR punpcklwd, 0, 0
 | |
| AVX_INSTR punpckldq, 0, 0
 | |
| AVX_INSTR punpcklqdq, 0, 0
 | |
| AVX_INSTR pxor, 0, 0
 | |
| AVX_INSTR shufps, 0, 1
 | |
| AVX_INSTR subpd, 1, 0
 | |
| AVX_INSTR subps, 1, 0
 | |
| AVX_INSTR subsd, 1, 0
 | |
| AVX_INSTR subss, 1, 0
 | |
| AVX_INSTR unpckhpd, 1, 0
 | |
| AVX_INSTR unpckhps, 1, 0
 | |
| AVX_INSTR unpcklpd, 1, 0
 | |
| AVX_INSTR unpcklps, 1, 0
 | |
| AVX_INSTR xorpd, 1, 0
 | |
| AVX_INSTR xorps, 1, 0
 | |
| 
 | |
| ; 3DNow instructions, for sharing code between AVX, SSE and 3DN
 | |
| AVX_INSTR pfadd, 1, 0
 | |
| AVX_INSTR pfsub, 1, 0
 | |
| AVX_INSTR pfmul, 1, 0
 | 
