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FFmpeg/libavutil/x86/x86inc.asm
Henrik Gramner 0b2b03568f avutil/x86inc: fix warnings when assembling with Nasm 2.15 
Some new warnings regarding use of empty macro parameters has
been added, so adjust some x86inc code to silence those.

Fixes part of ticket #8771

Signed-off-by: James Almer <jamrial@gmail.com>
2020-07-12 11:30:23 -03:00

1716 lines
49 KiB
NASM
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;*****************************************************************************
;* x86inc.asm: x264asm abstraction layer
;*****************************************************************************
;* Copyright (C) 2005-2018 x264 project
;*
;* Authors: Loren Merritt <lorenm@u.washington.edu>
;* Henrik Gramner <henrik@gramner.com>
;* Anton Mitrofanov <BugMaster@narod.ru>
;* Fiona Glaser <fiona@x264.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
; DSP functions that are most often used in x264.
; Unlike the rest of x264, this file is available under an ISC license, as it
; 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
; as this feature might be useful for others as well. Send patches or ideas
; to x264-devel@videolan.org .
%ifndef private_prefix
%define private_prefix x264
%endif
%ifndef public_prefix
%define public_prefix private_prefix
%endif
%if HAVE_ALIGNED_STACK
%define STACK_ALIGNMENT 16
%endif
%ifndef STACK_ALIGNMENT
%if ARCH_X86_64
%define STACK_ALIGNMENT 16
%else
%define STACK_ALIGNMENT 4
%endif
%endif
%define WIN64 0
%define UNIX64 0
%if ARCH_X86_64
%ifidn __OUTPUT_FORMAT__,win32
%define WIN64 1
%elifidn __OUTPUT_FORMAT__,win64
%define WIN64 1
%elifidn __OUTPUT_FORMAT__,x64
%define WIN64 1
%else
%define UNIX64 1
%endif
%endif
%define FORMAT_ELF 0
%ifidn __OUTPUT_FORMAT__,elf
%define FORMAT_ELF 1
%elifidn __OUTPUT_FORMAT__,elf32
%define FORMAT_ELF 1
%elifidn __OUTPUT_FORMAT__,elf64
%define FORMAT_ELF 1
%endif
%ifdef PREFIX
%define mangle(x) _ %+ x
%else
%define mangle(x) x
%endif
; aout does not support align=
; NOTE: This section is out of sync with x264, in order to
; keep supporting OS/2.
%macro SECTION_RODATA 0-1 16
%ifidn __OUTPUT_FORMAT__,aout
SECTION .text
%elifidn __OUTPUT_FORMAT__,coff
SECTION .text
%elifidn __OUTPUT_FORMAT__,win32
SECTION .rdata align=%1
%elif WIN64
SECTION .rdata align=%1
%else
SECTION .rodata align=%1
%endif
%endmacro
%if WIN64
%define PIC
%elif ARCH_X86_64 == 0
; x86_32 doesn't require PIC.
; Some distros prefer shared objects to be PIC, but nothing breaks if
; the code contains a few textrels, so we'll skip that complexity.
%undef PIC
%endif
%ifdef PIC
default rel
%endif
%macro CPUNOP 1
%if HAVE_CPUNOP
CPU %1
%endif
%endmacro
; Macros to eliminate most code duplication between x86_32 and x86_64:
; Currently this works only for leaf functions which load all their arguments
; into registers at the start, and make no other use of the stack. Luckily that
; covers most of x264's asm.
; PROLOGUE:
; %1 = number of arguments. loads them from stack if needed.
; %2 = number of registers used. pushes callee-saved regs if needed.
; %3 = number of xmm registers used. pushes callee-saved xmm regs if needed.
; %4 = (optional) stack size to be allocated. The stack will be aligned before
; allocating the specified stack size. If the required stack alignment is
; larger than the known stack alignment the stack will be manually aligned
; and an extra register will be allocated to hold the original stack
; pointer (to not invalidate r0m etc.). To prevent the use of an extra
; register as stack pointer, request a negative stack size.
; %4+/%5+ = list of names to define to registers
; PROLOGUE can also be invoked by adding the same options to cglobal
; e.g.
; cglobal foo, 2,3,7,0x40, dst, src, tmp
; declares a function (foo) that automatically loads two arguments (dst and
; src) into registers, uses one additional register (tmp) plus 7 vector
; registers (m0-m6) and allocates 0x40 bytes of stack space.
; 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, and returns.
; REP_RET:
; Use this instead of RET if it's a branch target.
; registers:
; rN and rNq are the native-size register holding function argument N
; rNd, rNw, rNb are dword, word, and byte size
; rNh is the high 8 bits of the word size
; rNm is the original location of arg N (a register or on the stack), dword
; rNmp is native size
%macro DECLARE_REG 2-3
%define r%1q %2
%define r%1d %2d
%define r%1w %2w
%define r%1b %2b
%define r%1h %2h
%define %2q %2
%if %0 == 2
%define r%1m %2d
%define r%1mp %2
%elif ARCH_X86_64 ; memory
%define r%1m [rstk + stack_offset + %3]
%define r%1mp qword r %+ %1 %+ m
%else
%define r%1m [rstk + stack_offset + %3]
%define r%1mp dword r %+ %1 %+ m
%endif
%define r%1 %2
%endmacro
%macro DECLARE_REG_SIZE 3
%define r%1q r%1
%define e%1q r%1
%define r%1d e%1
%define e%1d e%1
%define r%1w %1
%define e%1w %1
%define r%1h %3
%define e%1h %3
%define r%1b %2
%define e%1b %2
%if ARCH_X86_64 == 0
%define r%1 e%1
%endif
%endmacro
DECLARE_REG_SIZE ax, al, ah
DECLARE_REG_SIZE bx, bl, bh
DECLARE_REG_SIZE cx, cl, ch
DECLARE_REG_SIZE dx, dl, dh
DECLARE_REG_SIZE si, sil, null
DECLARE_REG_SIZE di, dil, null
DECLARE_REG_SIZE bp, bpl, null
; 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
%assign %%i %%i+1
%rotate 1
%endrep
%endmacro
%macro DECLARE_REG_TMP_SIZE 0-*
%rep %0
%define t%1q t%1 %+ q
%define t%1d t%1 %+ d
%define t%1w t%1 %+ w
%define t%1h t%1 %+ h
%define t%1b t%1 %+ b
%rotate 1
%endrep
%endmacro
DECLARE_REG_TMP_SIZE 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14
%if ARCH_X86_64
%define gprsize 8
%else
%define gprsize 4
%endif
%macro PUSH 1
push %1
%ifidn rstk, rsp
%assign stack_offset stack_offset+gprsize
%endif
%endmacro
%macro POP 1
pop %1
%ifidn rstk, rsp
%assign stack_offset stack_offset-gprsize
%endif
%endmacro
%macro PUSH_IF_USED 1-*
%rep %0
%if %1 < regs_used
PUSH r%1
%endif
%rotate 1
%endrep
%endmacro
%macro POP_IF_USED 1-*
%rep %0
%if %1 < regs_used
pop r%1
%endif
%rotate 1
%endrep
%endmacro
%macro LOAD_IF_USED 1-*
%rep %0
%if %1 < num_args
mov r%1, r %+ %1 %+ mp
%endif
%rotate 1
%endrep
%endmacro
%macro SUB 2
sub %1, %2
%ifidn %1, rstk
%assign stack_offset stack_offset+(%2)
%endif
%endmacro
%macro ADD 2
add %1, %2
%ifidn %1, rstk
%assign stack_offset stack_offset-(%2)
%endif
%endmacro
%macro movifnidn 2
%ifnidn %1, %2
mov %1, %2
%endif
%endmacro
%macro movsxdifnidn 2
%ifnidn %1, %2
movsxd %1, %2
%endif
%endmacro
%macro ASSERT 1
%if (%1) == 0
%error assertion ``%1'' failed
%endif
%endmacro
%macro DEFINE_ARGS 0-*
%ifdef n_arg_names
%assign %%i 0
%rep n_arg_names
CAT_UNDEF arg_name %+ %%i, q
CAT_UNDEF arg_name %+ %%i, d
CAT_UNDEF arg_name %+ %%i, w
CAT_UNDEF arg_name %+ %%i, h
CAT_UNDEF arg_name %+ %%i, b
CAT_UNDEF arg_name %+ %%i, m
CAT_UNDEF arg_name %+ %%i, mp
CAT_UNDEF arg_name, %%i
%assign %%i %%i+1
%endrep
%endif
%xdefine %%stack_offset stack_offset
%undef stack_offset ; so that the current value of stack_offset doesn't get baked in by xdefine
%assign %%i 0
%rep %0
%xdefine %1q r %+ %%i %+ q
%xdefine %1d r %+ %%i %+ d
%xdefine %1w r %+ %%i %+ w
%xdefine %1h r %+ %%i %+ h
%xdefine %1b r %+ %%i %+ b
%xdefine %1m r %+ %%i %+ m
%xdefine %1mp r %+ %%i %+ mp
CAT_XDEFINE arg_name, %%i, %1
%assign %%i %%i+1
%rotate 1
%endrep
%xdefine stack_offset %%stack_offset
%assign n_arg_names %0
%endmacro
%define required_stack_alignment ((mmsize + 15) & ~15)
%define vzeroupper_required (mmsize > 16 && (ARCH_X86_64 == 0 || xmm_regs_used > 16 || notcpuflag(avx512)))
%define high_mm_regs (16*cpuflag(avx512))
%macro ALLOC_STACK 1-2 0 ; stack_size, n_xmm_regs (for win64 only)
%ifnum %1
%if %1 != 0
%assign %%pad 0
%assign stack_size %1
%if stack_size < 0
%assign stack_size -stack_size
%endif
%if WIN64
%assign %%pad %%pad + 32 ; shadow space
%if mmsize != 8
%assign xmm_regs_used %2
%if xmm_regs_used > 8
%assign %%pad %%pad + (xmm_regs_used-8)*16 ; callee-saved xmm registers
%endif
%endif
%endif
%if required_stack_alignment <= STACK_ALIGNMENT
; maintain the current stack alignment
%assign stack_size_padded stack_size + %%pad + ((-%%pad-stack_offset-gprsize) & (STACK_ALIGNMENT-1))
SUB rsp, stack_size_padded
%else
%assign %%reg_num (regs_used - 1)
%xdefine rstk r %+ %%reg_num
; align stack, and save original stack location directly above
; it, i.e. in [rsp+stack_size_padded], so we can restore the
; stack in a single instruction (i.e. mov rsp, rstk or mov
; rsp, [rsp+stack_size_padded])
%if %1 < 0 ; need to store rsp on stack
%xdefine rstkm [rsp + stack_size + %%pad]
%assign %%pad %%pad + gprsize
%else ; can keep rsp in rstk during whole function
%xdefine rstkm rstk
%endif
%assign stack_size_padded stack_size + ((%%pad + required_stack_alignment-1) & ~(required_stack_alignment-1))
mov rstk, rsp
and rsp, ~(required_stack_alignment-1)
sub rsp, stack_size_padded
movifnidn rstkm, rstk
%endif
WIN64_PUSH_XMM
%endif
%endif
%endmacro
%macro SETUP_STACK_POINTER 1
%ifnum %1
%if %1 != 0 && required_stack_alignment > STACK_ALIGNMENT
%if %1 > 0
; Reserve an additional register for storing the original stack pointer, but avoid using
; eax/rax for this purpose since it can potentially get overwritten as a return value.
%assign regs_used (regs_used + 1)
%if ARCH_X86_64 && regs_used == 7
%assign regs_used 8
%elif ARCH_X86_64 == 0 && regs_used == 1
%assign regs_used 2
%endif
%endif
%if ARCH_X86_64 && regs_used < 5 + UNIX64 * 3
; Ensure that we don't clobber any registers containing arguments. For UNIX64 we also preserve r6 (rax)
; since it's used as a hidden argument in vararg functions to specify the number of vector registers used.
%assign regs_used 5 + UNIX64 * 3
%endif
%endif
%endif
%endmacro
%if WIN64 ; Windows x64 ;=================================================
DECLARE_REG 0, rcx
DECLARE_REG 1, rdx
DECLARE_REG 2, R8
DECLARE_REG 3, R9
DECLARE_REG 4, R10, 40
DECLARE_REG 5, R11, 48
DECLARE_REG 6, rax, 56
DECLARE_REG 7, rdi, 64
DECLARE_REG 8, rsi, 72
DECLARE_REG 9, rbx, 80
DECLARE_REG 10, rbp, 88
DECLARE_REG 11, R14, 96
DECLARE_REG 12, R15, 104
DECLARE_REG 13, R12, 112
DECLARE_REG 14, R13, 120
%macro PROLOGUE 2-5+ 0, 0 ; #args, #regs, #xmm_regs, [stack_size,] arg_names...
%assign num_args %1
%assign regs_used %2
ASSERT regs_used >= num_args
SETUP_STACK_POINTER %4
ASSERT regs_used <= 15
PUSH_IF_USED 7, 8, 9, 10, 11, 12, 13, 14
ALLOC_STACK %4, %3
%if mmsize != 8 && stack_size == 0
WIN64_SPILL_XMM %3
%endif
LOAD_IF_USED 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
%if %0 > 4
%ifnum %4
DEFINE_ARGS %5
%else
DEFINE_ARGS %4, %5
%endif
%elifnnum %4
DEFINE_ARGS %4
%endif
%endmacro
%macro WIN64_PUSH_XMM 0
; Use the shadow space to store XMM6 and XMM7, the rest needs stack space allocated.
%if xmm_regs_used > 6 + high_mm_regs
movaps [rstk + stack_offset + 8], xmm6
%endif
%if xmm_regs_used > 7 + high_mm_regs
movaps [rstk + stack_offset + 24], xmm7
%endif
%assign %%xmm_regs_on_stack xmm_regs_used - high_mm_regs - 8
%if %%xmm_regs_on_stack > 0
%assign %%i 8
%rep %%xmm_regs_on_stack
movaps [rsp + (%%i-8)*16 + stack_size + 32], xmm %+ %%i
%assign %%i %%i+1
%endrep
%endif
%endmacro
%macro WIN64_SPILL_XMM 1
%assign xmm_regs_used %1
ASSERT xmm_regs_used <= 16 + high_mm_regs
%assign %%xmm_regs_on_stack xmm_regs_used - high_mm_regs - 8
%if %%xmm_regs_on_stack > 0
; Allocate stack space for callee-saved xmm registers plus shadow space and align the stack.
%assign %%pad %%xmm_regs_on_stack*16 + 32
%assign stack_size_padded %%pad + ((-%%pad-stack_offset-gprsize) & (STACK_ALIGNMENT-1))
SUB rsp, stack_size_padded
%endif
WIN64_PUSH_XMM
%endmacro
%macro WIN64_RESTORE_XMM_INTERNAL 0
%assign %%pad_size 0
%assign %%xmm_regs_on_stack xmm_regs_used - high_mm_regs - 8
%if %%xmm_regs_on_stack > 0
%assign %%i xmm_regs_used - high_mm_regs
%rep %%xmm_regs_on_stack
%assign %%i %%i-1
movaps xmm %+ %%i, [rsp + (%%i-8)*16 + stack_size + 32]
%endrep
%endif
%if stack_size_padded > 0
%if stack_size > 0 && required_stack_alignment > STACK_ALIGNMENT
mov rsp, rstkm
%else
add rsp, stack_size_padded
%assign %%pad_size stack_size_padded
%endif
%endif
%if xmm_regs_used > 7 + high_mm_regs
movaps xmm7, [rsp + stack_offset - %%pad_size + 24]
%endif
%if xmm_regs_used > 6 + high_mm_regs
movaps xmm6, [rsp + stack_offset - %%pad_size + 8]
%endif
%endmacro
%macro WIN64_RESTORE_XMM 0
WIN64_RESTORE_XMM_INTERNAL
%assign stack_offset (stack_offset-stack_size_padded)
%assign stack_size_padded 0
%assign xmm_regs_used 0
%endmacro
%define has_epilogue regs_used > 7 || stack_size > 0 || vzeroupper_required || xmm_regs_used > 6+high_mm_regs
%macro RET 0
WIN64_RESTORE_XMM_INTERNAL
POP_IF_USED 14, 13, 12, 11, 10, 9, 8, 7
%if vzeroupper_required
vzeroupper
%endif
AUTO_REP_RET
%endmacro
%elif ARCH_X86_64 ; *nix x64 ;=============================================
DECLARE_REG 0, rdi
DECLARE_REG 1, rsi
DECLARE_REG 2, rdx
DECLARE_REG 3, rcx
DECLARE_REG 4, R8
DECLARE_REG 5, R9
DECLARE_REG 6, rax, 8
DECLARE_REG 7, R10, 16
DECLARE_REG 8, R11, 24
DECLARE_REG 9, rbx, 32
DECLARE_REG 10, rbp, 40
DECLARE_REG 11, R14, 48
DECLARE_REG 12, R15, 56
DECLARE_REG 13, R12, 64
DECLARE_REG 14, R13, 72
%macro PROLOGUE 2-5+ 0, 0 ; #args, #regs, #xmm_regs, [stack_size,] arg_names...
%assign num_args %1
%assign regs_used %2
%assign xmm_regs_used %3
ASSERT regs_used >= num_args
SETUP_STACK_POINTER %4
ASSERT regs_used <= 15
PUSH_IF_USED 9, 10, 11, 12, 13, 14
ALLOC_STACK %4
LOAD_IF_USED 6, 7, 8, 9, 10, 11, 12, 13, 14
%if %0 > 4
%ifnum %4
DEFINE_ARGS %5
%else
DEFINE_ARGS %4, %5
%endif
%elifnnum %4
DEFINE_ARGS %4
%endif
%endmacro
%define has_epilogue regs_used > 9 || stack_size > 0 || vzeroupper_required
%macro RET 0
%if stack_size_padded > 0
%if required_stack_alignment > STACK_ALIGNMENT
mov rsp, rstkm
%else
add rsp, stack_size_padded
%endif
%endif
POP_IF_USED 14, 13, 12, 11, 10, 9
%if vzeroupper_required
vzeroupper
%endif
AUTO_REP_RET
%endmacro
%else ; X86_32 ;==============================================================
DECLARE_REG 0, eax, 4
DECLARE_REG 1, ecx, 8
DECLARE_REG 2, edx, 12
DECLARE_REG 3, ebx, 16
DECLARE_REG 4, esi, 20
DECLARE_REG 5, edi, 24
DECLARE_REG 6, ebp, 28
%define rsp esp
%macro DECLARE_ARG 1-*
%rep %0
%define r%1m [rstk + stack_offset + 4*%1 + 4]
%define r%1mp dword r%1m
%rotate 1
%endrep
%endmacro
DECLARE_ARG 7, 8, 9, 10, 11, 12, 13, 14
%macro PROLOGUE 2-5+ 0, 0 ; #args, #regs, #xmm_regs, [stack_size,] arg_names...
%assign num_args %1
%assign regs_used %2
ASSERT regs_used >= num_args
%if num_args > 7
%assign num_args 7
%endif
%if regs_used > 7
%assign regs_used 7
%endif
SETUP_STACK_POINTER %4
ASSERT regs_used <= 7
PUSH_IF_USED 3, 4, 5, 6
ALLOC_STACK %4
LOAD_IF_USED 0, 1, 2, 3, 4, 5, 6
%if %0 > 4
%ifnum %4
DEFINE_ARGS %5
%else
DEFINE_ARGS %4, %5
%endif
%elifnnum %4
DEFINE_ARGS %4
%endif
%endmacro
%define has_epilogue regs_used > 3 || stack_size > 0 || vzeroupper_required
%macro RET 0
%if stack_size_padded > 0
%if required_stack_alignment > STACK_ALIGNMENT
mov rsp, rstkm
%else
add rsp, stack_size_padded
%endif
%endif
POP_IF_USED 6, 5, 4, 3
%if vzeroupper_required
vzeroupper
%endif
AUTO_REP_RET
%endmacro
%endif ;======================================================================
%if WIN64 == 0
%macro WIN64_SPILL_XMM 1
%endmacro
%macro WIN64_RESTORE_XMM 0
%endmacro
%macro WIN64_PUSH_XMM 0
%endmacro
%endif
; On AMD cpus <=K10, an ordinary ret is slow if it immediately follows either
; a branch or a branch target. So switch to a 2-byte form of ret in that case.
; We can automatically detect "follows a branch", but not a branch target.
; (SSSE3 is a sufficient condition to know that your cpu doesn't have this problem.)
%macro REP_RET 0
%if has_epilogue || cpuflag(ssse3)
RET
%else
rep ret
%endif
annotate_function_size
%endmacro
%define last_branch_adr $$
%macro AUTO_REP_RET 0
%if notcpuflag(ssse3)
times ((last_branch_adr-$)>>31)+1 rep ; times 1 iff $ == last_branch_adr.
%endif
ret
annotate_function_size
%endmacro
%macro BRANCH_INSTR 0-*
%rep %0
%macro %1 1-2 %1
%2 %1
%if notcpuflag(ssse3)
%%branch_instr equ $
%xdefine last_branch_adr %%branch_instr
%endif
%endmacro
%rotate 1
%endrep
%endmacro
BRANCH_INSTR jz, je, jnz, jne, jl, jle, jnl, jnle, jg, jge, jng, jnge, ja, jae, jna, jnae, jb, jbe, jnb, jnbe, jc, jnc, js, jns, jo, jno, jp, jnp
%macro TAIL_CALL 2 ; callee, is_nonadjacent
%if has_epilogue
call %1
RET
%elif %2
jmp %1
%endif
annotate_function_size
%endmacro
;=============================================================================
; arch-independent part
;=============================================================================
%assign function_align 16
; Begin a function.
; Applies any symbol mangling needed for C linkage, and sets up a define such that
; subsequent uses of the function name automatically refer to the mangled version.
; Appends cpuflags to the function name if cpuflags has been specified.
; The "" empty default parameter is a workaround for nasm, which fails if SUFFIX
; is empty and we call cglobal_internal with just %1 %+ SUFFIX (without %2).
%macro cglobal 1-2+ "" ; name, [PROLOGUE args]
cglobal_internal 1, %1 %+ SUFFIX, %2
%endmacro
%macro cvisible 1-2+ "" ; name, [PROLOGUE args]
cglobal_internal 0, %1 %+ SUFFIX, %2
%endmacro
%macro cglobal_internal 2-3+
annotate_function_size
%if %1
%xdefine %%FUNCTION_PREFIX private_prefix
%xdefine %%VISIBILITY hidden
%else
%xdefine %%FUNCTION_PREFIX public_prefix
%xdefine %%VISIBILITY
%endif
%ifndef cglobaled_%2
%xdefine %2 mangle(%%FUNCTION_PREFIX %+ _ %+ %2)
%xdefine %2.skip_prologue %2 %+ .skip_prologue
CAT_XDEFINE cglobaled_, %2, 1
%endif
%xdefine current_function %2
%xdefine current_function_section __SECT__
%if FORMAT_ELF
global %2:function %%VISIBILITY
%else
global %2
%endif
align function_align
%2:
RESET_MM_PERMUTATION ; needed for x86-64, also makes disassembly somewhat nicer
%xdefine rstk rsp ; copy of the original stack pointer, used when greater alignment than the known stack alignment is required
%assign stack_offset 0 ; stack pointer offset relative to the return address
%assign stack_size 0 ; amount of stack space that can be freely used inside a function
%assign stack_size_padded 0 ; total amount of allocated stack space, including space for callee-saved xmm registers on WIN64 and alignment padding
%assign xmm_regs_used 0 ; number of XMM registers requested, used for dealing with callee-saved registers on WIN64 and vzeroupper
%ifnidn %3, ""
PROLOGUE %3
%endif
%endmacro
; Create a global symbol from a local label with the correct name mangling and type
%macro cglobal_label 1
%if FORMAT_ELF
global current_function %+ %1:function hidden
%else
global current_function %+ %1
%endif
%1:
%endmacro
%macro cextern 1
%xdefine %1 mangle(private_prefix %+ _ %+ %1)
CAT_XDEFINE cglobaled_, %1, 1
extern %1
%endmacro
; like cextern, but without the prefix
%macro cextern_naked 1
%ifdef PREFIX
%xdefine %1 mangle(%1)
%endif
CAT_XDEFINE cglobaled_, %1, 1
extern %1
%endmacro
%macro const 1-2+
%xdefine %1 mangle(private_prefix %+ _ %+ %1)
%if FORMAT_ELF
global %1:data hidden
%else
global %1
%endif
%1: %2
%endmacro
; This is needed for ELF, otherwise the GNU linker assumes the stack is executable by default.
%if FORMAT_ELF
[SECTION .note.GNU-stack noalloc noexec nowrite progbits]
%endif
; Tell debuggers how large the function was.
; This may be invoked multiple times per function; we rely on later instances overriding earlier ones.
; This is invoked by RET and similar macros, and also cglobal does it for the previous function,
; but if the last function in a source file doesn't use any of the standard macros for its epilogue,
; then its size might be unspecified.
%macro annotate_function_size 0
%ifdef __YASM_VER__
%ifdef current_function
%if FORMAT_ELF
current_function_section
%%ecf equ $
size current_function %%ecf - current_function
__SECT__
%endif
%endif
%endif
%endmacro
; cpuflags
%assign cpuflags_mmx (1<<0)
%assign cpuflags_mmx2 (1<<1) | cpuflags_mmx
%assign cpuflags_3dnow (1<<2) | cpuflags_mmx
%assign cpuflags_3dnowext (1<<3) | cpuflags_3dnow
%assign cpuflags_sse (1<<4) | cpuflags_mmx2
%assign cpuflags_sse2 (1<<5) | cpuflags_sse
%assign cpuflags_sse2slow (1<<6) | cpuflags_sse2
%assign cpuflags_lzcnt (1<<7) | cpuflags_sse2
%assign cpuflags_sse3 (1<<8) | cpuflags_sse2
%assign cpuflags_ssse3 (1<<9) | cpuflags_sse3
%assign cpuflags_sse4 (1<<10)| cpuflags_ssse3
%assign cpuflags_sse42 (1<<11)| cpuflags_sse4
%assign cpuflags_aesni (1<<12)| cpuflags_sse42
%assign cpuflags_avx (1<<13)| cpuflags_sse42
%assign cpuflags_xop (1<<14)| cpuflags_avx
%assign cpuflags_fma4 (1<<15)| cpuflags_avx
%assign cpuflags_fma3 (1<<16)| cpuflags_avx
%assign cpuflags_bmi1 (1<<17)| cpuflags_avx|cpuflags_lzcnt
%assign cpuflags_bmi2 (1<<18)| cpuflags_bmi1
%assign cpuflags_avx2 (1<<19)| cpuflags_fma3|cpuflags_bmi2
%assign cpuflags_avx512 (1<<20)| cpuflags_avx2 ; F, CD, BW, DQ, VL
%assign cpuflags_cache32 (1<<21)
%assign cpuflags_cache64 (1<<22)
%assign cpuflags_aligned (1<<23) ; not a cpu feature, but a function variant
%assign cpuflags_atom (1<<24)
; Returns a boolean value expressing whether or not the specified cpuflag is enabled.
%define cpuflag(x) (((((cpuflags & (cpuflags_ %+ x)) ^ (cpuflags_ %+ x)) - 1) >> 31) & 1)
%define notcpuflag(x) (cpuflag(x) ^ 1)
; Takes an arbitrary number of 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-*
%xdefine SUFFIX
%undef cpuname
%assign cpuflags 0
%if %0 >= 1
%rep %0
%ifdef cpuname
%xdefine cpuname cpuname %+ _%1
%else
%xdefine cpuname %1
%endif
%assign cpuflags cpuflags | cpuflags_%1
%rotate 1
%endrep
%xdefine SUFFIX _ %+ cpuname
%if cpuflag(avx)
%assign avx_enabled 1
%endif
%if (mmsize == 16 && notcpuflag(sse2)) || (mmsize == 32 && notcpuflag(avx2))
%define mova movaps
%define movu movups
%define movnta movntps
%endif
%if cpuflag(aligned)
%define movu mova
%elif cpuflag(sse3) && notcpuflag(ssse3)
%define movu lddqu
%endif
%endif
%if ARCH_X86_64 || cpuflag(sse2)
CPUNOP amdnop
%else
CPUNOP basicnop
%endif
%endmacro
; Merge mmx, sse*, and avx*
; m# is a simd register of the currently selected size
; xm# is the corresponding xmm register if mmsize >= 16, otherwise the same as m#
; ym# is the corresponding ymm register if mmsize >= 32, otherwise the same as m#
; zm# is the corresponding zmm register if mmsize >= 64, otherwise the same as m#
; (All 4 remain in sync through SWAP.)
%macro CAT_XDEFINE 3
%xdefine %1%2 %3
%endmacro
%macro CAT_UNDEF 2
%undef %1%2
%endmacro
%macro DEFINE_MMREGS 1 ; mmtype
%assign %%prev_mmregs 0
%ifdef num_mmregs
%assign %%prev_mmregs num_mmregs
%endif
%assign num_mmregs 8
%if ARCH_X86_64 && mmsize >= 16
%assign num_mmregs 16
%if cpuflag(avx512) || mmsize == 64
%assign num_mmregs 32
%endif
%endif
%assign %%i 0
%rep num_mmregs
CAT_XDEFINE m, %%i, %1 %+ %%i
CAT_XDEFINE nn%1, %%i, %%i
%assign %%i %%i+1
%endrep
%if %%prev_mmregs > num_mmregs
%rep %%prev_mmregs - num_mmregs
CAT_UNDEF m, %%i
CAT_UNDEF nn %+ mmtype, %%i
%assign %%i %%i+1
%endrep
%endif
%xdefine mmtype %1
%endmacro
; Prefer registers 16-31 over 0-15 to avoid having to use vzeroupper
%macro AVX512_MM_PERMUTATION 0-1 0 ; start_reg
%if ARCH_X86_64 && cpuflag(avx512)
%assign %%i %1
%rep 16-%1
%assign %%i_high %%i+16
SWAP %%i, %%i_high
%assign %%i %%i+1
%endrep
%endif
%endmacro
%macro INIT_MMX 0-1+
%assign avx_enabled 0
%define RESET_MM_PERMUTATION INIT_MMX %1
%define mmsize 8
%define mova movq
%define movu movq
%define movh movd
%define movnta movntq
INIT_CPUFLAGS %1
DEFINE_MMREGS mm
%endmacro
%macro INIT_XMM 0-1+
%assign avx_enabled 0
%define RESET_MM_PERMUTATION INIT_XMM %1
%define mmsize 16
%define mova movdqa
%define movu movdqu
%define movh movq
%define movnta movntdq
INIT_CPUFLAGS %1
DEFINE_MMREGS xmm
%if WIN64
AVX512_MM_PERMUTATION 6 ; Swap callee-saved registers with volatile registers
%endif
%endmacro
%macro INIT_YMM 0-1+
%assign avx_enabled 1
%define RESET_MM_PERMUTATION INIT_YMM %1
%define mmsize 32
%define mova movdqa
%define movu movdqu
%undef movh
%define movnta movntdq
INIT_CPUFLAGS %1
DEFINE_MMREGS ymm
AVX512_MM_PERMUTATION
%endmacro
%macro INIT_ZMM 0-1+
%assign avx_enabled 1
%define RESET_MM_PERMUTATION INIT_ZMM %1
%define mmsize 64
%define mova movdqa
%define movu movdqu
%undef movh
%define movnta movntdq
INIT_CPUFLAGS %1
DEFINE_MMREGS zmm
AVX512_MM_PERMUTATION
%endmacro
INIT_XMM
%macro DECLARE_MMCAST 1
%define mmmm%1 mm%1
%define mmxmm%1 mm%1
%define mmymm%1 mm%1
%define mmzmm%1 mm%1
%define xmmmm%1 mm%1
%define xmmxmm%1 xmm%1
%define xmmymm%1 xmm%1
%define xmmzmm%1 xmm%1
%define ymmmm%1 mm%1
%define ymmxmm%1 xmm%1
%define ymmymm%1 ymm%1
%define ymmzmm%1 ymm%1
%define zmmmm%1 mm%1
%define zmmxmm%1 xmm%1
%define zmmymm%1 ymm%1
%define zmmzmm%1 zmm%1
%define xm%1 xmm %+ m%1
%define ym%1 ymm %+ m%1
%define zm%1 zmm %+ m%1
%endmacro
%assign i 0
%rep 32
DECLARE_MMCAST i
%assign i i+1
%endrep
; 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
%rotate 2
%endrep
%rep %0/2
%xdefine m%1 %%tmp%2
CAT_XDEFINE nn, m%1, %1
%rotate 2
%endrep
%endmacro
%macro SWAP 2+ ; swaps a single chain (sometimes more concise than pairs)
%ifnum %1 ; SWAP 0, 1, ...
SWAP_INTERNAL_NUM %1, %2
%else ; SWAP m0, m1, ...
SWAP_INTERNAL_NAME %1, %2
%endif
%endmacro
%macro SWAP_INTERNAL_NUM 2-*
%rep %0-1
%xdefine %%tmp m%1
%xdefine m%1 m%2
%xdefine m%2 %%tmp
CAT_XDEFINE nn, m%1, %1
CAT_XDEFINE nn, m%2, %2
%rotate 1
%endrep
%endmacro
%macro SWAP_INTERNAL_NAME 2-*
%xdefine %%args nn %+ %1
%rep %0-1
%xdefine %%args %%args, nn %+ %2
%rotate 1
%endrep
SWAP_INTERNAL_NUM %%args
%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 nn, 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
%ifid %1
call_internal %1 %+ SUFFIX, %1
%else
call %1
%endif
%endmacro
%macro call_internal 2
%xdefine %%i %2
%ifndef cglobaled_%2
%ifdef cglobaled_%1
%xdefine %%i %1
%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 32
%if i < 8
CAT_XDEFINE sizeofmm, i, 8
CAT_XDEFINE regnumofmm, i, i
%endif
CAT_XDEFINE sizeofxmm, i, 16
CAT_XDEFINE sizeofymm, i, 32
CAT_XDEFINE sizeofzmm, i, 64
CAT_XDEFINE regnumofxmm, i, i
CAT_XDEFINE regnumofymm, i, i
CAT_XDEFINE regnumofzmm, i, i
%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 == minimal instruction set
;%3 == 1 if float, 0 if int
;%4 == 1 if 4-operand emulation, 0 if 3-operand emulation, 255 otherwise (no emulation)
;%5 == 1 if commutative (i.e. doesn't matter which src arg is which), 0 if not
;%6+: operands
%macro RUN_AVX_INSTR 6-9+
%ifnum sizeof%7
%assign __sizeofreg sizeof%7
%elifnum sizeof%6
%assign __sizeofreg sizeof%6
%else
%assign __sizeofreg mmsize
%endif
%assign __emulate_avx 0
%if avx_enabled && __sizeofreg >= 16
%xdefine __instr v%1
%else
%xdefine __instr %1
%if %0 >= 8+%4
%assign __emulate_avx 1
%endif
%endif
%ifnidn %2, fnord
%ifdef cpuname
%if notcpuflag(%2)
%error use of ``%1'' %2 instruction in cpuname function: current_function
%elif cpuflags_%2 < cpuflags_sse && notcpuflag(sse2) && __sizeofreg > 8
%error use of ``%1'' sse2 instruction in cpuname function: current_function
%endif
%endif
%endif
%if __emulate_avx
%xdefine __src1 %7
%xdefine __src2 %8
%if %5 && %4 == 0
%ifnidn %6, %7
%ifidn %6, %8
%xdefine __src1 %8
%xdefine __src2 %7
%elifnnum sizeof%8
; 3-operand AVX instructions with a memory arg can only have it in src2,
; whereas SSE emulation prefers to have it in src1 (i.e. the mov).
; So, if the instruction is commutative with a memory arg, swap them.
%xdefine __src1 %8
%xdefine __src2 %7
%endif
%endif
%endif
%ifnidn %6, __src1
%if %0 >= 9
CHECK_AVX_INSTR_EMU {%1 %6, %7, %8, %9}, %6, __src2, %9
%else
CHECK_AVX_INSTR_EMU {%1 %6, %7, %8}, %6, __src2
%endif
%if __sizeofreg == 8
MOVQ %6, __src1
%elif %3
MOVAPS %6, __src1
%else
MOVDQA %6, __src1
%endif
%endif
%if %0 >= 9
%1 %6, __src2, %9
%else
%1 %6, __src2
%endif
%elif %0 >= 9
__instr %6, %7, %8, %9
%elif %0 == 8
__instr %6, %7, %8
%elif %0 == 7
__instr %6, %7
%else
__instr %6
%endif
%endmacro
;%1 == instruction
;%2 == minimal instruction set
;%3 == 1 if float, 0 if int
;%4 == 1 if 4-operand emulation, 0 if 3-operand emulation, 255 otherwise (no emulation)
;%5 == 1 if commutative (i.e. doesn't matter which src arg is which), 0 if not
%macro AVX_INSTR 1-5 fnord, 0, 255, 0
%macro %1 1-10 fnord, fnord, fnord, fnord, %1, %2, %3, %4, %5
%ifidn %2, fnord
RUN_AVX_INSTR %6, %7, %8, %9, %10, %1
%elifidn %3, fnord
RUN_AVX_INSTR %6, %7, %8, %9, %10, %1, %2
%elifidn %4, fnord
RUN_AVX_INSTR %6, %7, %8, %9, %10, %1, %2, %3
%elifidn %5, fnord
RUN_AVX_INSTR %6, %7, %8, %9, %10, %1, %2, %3, %4
%else
RUN_AVX_INSTR %6, %7, %8, %9, %10, %1, %2, %3, %4, %5
%endif
%endmacro
%endmacro
; Instructions with both VEX/EVEX and legacy encodings
; Non-destructive instructions are written without parameters
AVX_INSTR addpd, sse2, 1, 0, 1
AVX_INSTR addps, sse, 1, 0, 1
AVX_INSTR addsd, sse2, 1, 0, 0
AVX_INSTR addss, sse, 1, 0, 0
AVX_INSTR addsubpd, sse3, 1, 0, 0
AVX_INSTR addsubps, sse3, 1, 0, 0
AVX_INSTR aesdec, aesni, 0, 0, 0
AVX_INSTR aesdeclast, aesni, 0, 0, 0
AVX_INSTR aesenc, aesni, 0, 0, 0
AVX_INSTR aesenclast, aesni, 0, 0, 0
AVX_INSTR aesimc, aesni
AVX_INSTR aeskeygenassist, aesni
AVX_INSTR andnpd, sse2, 1, 0, 0
AVX_INSTR andnps, sse, 1, 0, 0
AVX_INSTR andpd, sse2, 1, 0, 1
AVX_INSTR andps, sse, 1, 0, 1
AVX_INSTR blendpd, sse4, 1, 1, 0
AVX_INSTR blendps, sse4, 1, 1, 0
AVX_INSTR blendvpd, sse4 ; can't be emulated
AVX_INSTR blendvps, sse4 ; can't be emulated
AVX_INSTR cmpeqpd, sse2, 1, 0, 1
AVX_INSTR cmpeqps, sse, 1, 0, 1
AVX_INSTR cmpeqsd, sse2, 1, 0, 0
AVX_INSTR cmpeqss, sse, 1, 0, 0
AVX_INSTR cmplepd, sse2, 1, 0, 0
AVX_INSTR cmpleps, sse, 1, 0, 0
AVX_INSTR cmplesd, sse2, 1, 0, 0
AVX_INSTR cmpless, sse, 1, 0, 0
AVX_INSTR cmpltpd, sse2, 1, 0, 0
AVX_INSTR cmpltps, sse, 1, 0, 0
AVX_INSTR cmpltsd, sse2, 1, 0, 0
AVX_INSTR cmpltss, sse, 1, 0, 0
AVX_INSTR cmpneqpd, sse2, 1, 0, 1
AVX_INSTR cmpneqps, sse, 1, 0, 1
AVX_INSTR cmpneqsd, sse2, 1, 0, 0
AVX_INSTR cmpneqss, sse, 1, 0, 0
AVX_INSTR cmpnlepd, sse2, 1, 0, 0
AVX_INSTR cmpnleps, sse, 1, 0, 0
AVX_INSTR cmpnlesd, sse2, 1, 0, 0
AVX_INSTR cmpnless, sse, 1, 0, 0
AVX_INSTR cmpnltpd, sse2, 1, 0, 0
AVX_INSTR cmpnltps, sse, 1, 0, 0
AVX_INSTR cmpnltsd, sse2, 1, 0, 0
AVX_INSTR cmpnltss, sse, 1, 0, 0
AVX_INSTR cmpordpd, sse2 1, 0, 1
AVX_INSTR cmpordps, sse 1, 0, 1
AVX_INSTR cmpordsd, sse2 1, 0, 0
AVX_INSTR cmpordss, sse 1, 0, 0
AVX_INSTR cmppd, sse2, 1, 1, 0
AVX_INSTR cmpps, sse, 1, 1, 0
AVX_INSTR cmpsd, sse2, 1, 1, 0
AVX_INSTR cmpss, sse, 1, 1, 0
AVX_INSTR cmpunordpd, sse2, 1, 0, 1
AVX_INSTR cmpunordps, sse, 1, 0, 1
AVX_INSTR cmpunordsd, sse2, 1, 0, 0
AVX_INSTR cmpunordss, sse, 1, 0, 0
AVX_INSTR comisd, sse2
AVX_INSTR comiss, sse
AVX_INSTR cvtdq2pd, sse2
AVX_INSTR cvtdq2ps, sse2
AVX_INSTR cvtpd2dq, sse2
AVX_INSTR cvtpd2ps, sse2
AVX_INSTR cvtps2dq, sse2
AVX_INSTR cvtps2pd, sse2
AVX_INSTR cvtsd2si, sse2
AVX_INSTR cvtsd2ss, sse2, 1, 0, 0
AVX_INSTR cvtsi2sd, sse2, 1, 0, 0
AVX_INSTR cvtsi2ss, sse, 1, 0, 0
AVX_INSTR cvtss2sd, sse2, 1, 0, 0
AVX_INSTR cvtss2si, sse
AVX_INSTR cvttpd2dq, sse2
AVX_INSTR cvttps2dq, sse2
AVX_INSTR cvttsd2si, sse2
AVX_INSTR cvttss2si, sse
AVX_INSTR divpd, sse2, 1, 0, 0
AVX_INSTR divps, sse, 1, 0, 0
AVX_INSTR divsd, sse2, 1, 0, 0
AVX_INSTR divss, sse, 1, 0, 0
AVX_INSTR dppd, sse4, 1, 1, 0
AVX_INSTR dpps, sse4, 1, 1, 0
AVX_INSTR extractps, sse4
AVX_INSTR haddpd, sse3, 1, 0, 0
AVX_INSTR haddps, sse3, 1, 0, 0
AVX_INSTR hsubpd, sse3, 1, 0, 0
AVX_INSTR hsubps, sse3, 1, 0, 0
AVX_INSTR insertps, sse4, 1, 1, 0
AVX_INSTR lddqu, sse3
AVX_INSTR ldmxcsr, sse
AVX_INSTR maskmovdqu, sse2
AVX_INSTR maxpd, sse2, 1, 0, 1
AVX_INSTR maxps, sse, 1, 0, 1
AVX_INSTR maxsd, sse2, 1, 0, 0
AVX_INSTR maxss, sse, 1, 0, 0
AVX_INSTR minpd, sse2, 1, 0, 1
AVX_INSTR minps, sse, 1, 0, 1
AVX_INSTR minsd, sse2, 1, 0, 0
AVX_INSTR minss, sse, 1, 0, 0
AVX_INSTR movapd, sse2
AVX_INSTR movaps, sse
AVX_INSTR movd, mmx
AVX_INSTR movddup, sse3
AVX_INSTR movdqa, sse2
AVX_INSTR movdqu, sse2
AVX_INSTR movhlps, sse, 1, 0, 0
AVX_INSTR movhpd, sse2, 1, 0, 0
AVX_INSTR movhps, sse, 1, 0, 0
AVX_INSTR movlhps, sse, 1, 0, 0
AVX_INSTR movlpd, sse2, 1, 0, 0
AVX_INSTR movlps, sse, 1, 0, 0
AVX_INSTR movmskpd, sse2
AVX_INSTR movmskps, sse
AVX_INSTR movntdq, sse2
AVX_INSTR movntdqa, sse4
AVX_INSTR movntpd, sse2
AVX_INSTR movntps, sse
AVX_INSTR movq, mmx
AVX_INSTR movsd, sse2, 1, 0, 0
AVX_INSTR movshdup, sse3
AVX_INSTR movsldup, sse3
AVX_INSTR movss, sse, 1, 0, 0
AVX_INSTR movupd, sse2
AVX_INSTR movups, sse
AVX_INSTR mpsadbw, sse4, 0, 1, 0
AVX_INSTR mulpd, sse2, 1, 0, 1
AVX_INSTR mulps, sse, 1, 0, 1
AVX_INSTR mulsd, sse2, 1, 0, 0
AVX_INSTR mulss, sse, 1, 0, 0
AVX_INSTR orpd, sse2, 1, 0, 1
AVX_INSTR orps, sse, 1, 0, 1
AVX_INSTR pabsb, ssse3
AVX_INSTR pabsd, ssse3
AVX_INSTR pabsw, ssse3
AVX_INSTR packsswb, mmx, 0, 0, 0
AVX_INSTR packssdw, mmx, 0, 0, 0
AVX_INSTR packuswb, mmx, 0, 0, 0
AVX_INSTR packusdw, sse4, 0, 0, 0
AVX_INSTR paddb, mmx, 0, 0, 1
AVX_INSTR paddw, mmx, 0, 0, 1
AVX_INSTR paddd, mmx, 0, 0, 1
AVX_INSTR paddq, sse2, 0, 0, 1
AVX_INSTR paddsb, mmx, 0, 0, 1
AVX_INSTR paddsw, mmx, 0, 0, 1
AVX_INSTR paddusb, mmx, 0, 0, 1
AVX_INSTR paddusw, mmx, 0, 0, 1
AVX_INSTR palignr, ssse3, 0, 1, 0
AVX_INSTR pand, mmx, 0, 0, 1
AVX_INSTR pandn, mmx, 0, 0, 0
AVX_INSTR pavgb, mmx2, 0, 0, 1
AVX_INSTR pavgw, mmx2, 0, 0, 1
AVX_INSTR pblendvb, sse4 ; can't be emulated
AVX_INSTR pblendw, sse4, 0, 1, 0
AVX_INSTR pclmulqdq, fnord, 0, 1, 0
AVX_INSTR pclmulhqhqdq, fnord, 0, 0, 0
AVX_INSTR pclmulhqlqdq, fnord, 0, 0, 0
AVX_INSTR pclmullqhqdq, fnord, 0, 0, 0
AVX_INSTR pclmullqlqdq, fnord, 0, 0, 0
AVX_INSTR pcmpestri, sse42
AVX_INSTR pcmpestrm, sse42
AVX_INSTR pcmpistri, sse42
AVX_INSTR pcmpistrm, sse42
AVX_INSTR pcmpeqb, mmx, 0, 0, 1
AVX_INSTR pcmpeqw, mmx, 0, 0, 1
AVX_INSTR pcmpeqd, mmx, 0, 0, 1
AVX_INSTR pcmpeqq, sse4, 0, 0, 1
AVX_INSTR pcmpgtb, mmx, 0, 0, 0
AVX_INSTR pcmpgtw, mmx, 0, 0, 0
AVX_INSTR pcmpgtd, mmx, 0, 0, 0
AVX_INSTR pcmpgtq, sse42, 0, 0, 0
AVX_INSTR pextrb, sse4
AVX_INSTR pextrd, sse4
AVX_INSTR pextrq, sse4
AVX_INSTR pextrw, mmx2
AVX_INSTR phaddw, ssse3, 0, 0, 0
AVX_INSTR phaddd, ssse3, 0, 0, 0
AVX_INSTR phaddsw, ssse3, 0, 0, 0
AVX_INSTR phminposuw, sse4
AVX_INSTR phsubw, ssse3, 0, 0, 0
AVX_INSTR phsubd, ssse3, 0, 0, 0
AVX_INSTR phsubsw, ssse3, 0, 0, 0
AVX_INSTR pinsrb, sse4, 0, 1, 0
AVX_INSTR pinsrd, sse4, 0, 1, 0
AVX_INSTR pinsrq, sse4, 0, 1, 0
AVX_INSTR pinsrw, mmx2, 0, 1, 0
AVX_INSTR pmaddwd, mmx, 0, 0, 1
AVX_INSTR pmaddubsw, ssse3, 0, 0, 0
AVX_INSTR pmaxsb, sse4, 0, 0, 1
AVX_INSTR pmaxsw, mmx2, 0, 0, 1
AVX_INSTR pmaxsd, sse4, 0, 0, 1
AVX_INSTR pmaxub, mmx2, 0, 0, 1
AVX_INSTR pmaxuw, sse4, 0, 0, 1
AVX_INSTR pmaxud, sse4, 0, 0, 1
AVX_INSTR pminsb, sse4, 0, 0, 1
AVX_INSTR pminsw, mmx2, 0, 0, 1
AVX_INSTR pminsd, sse4, 0, 0, 1
AVX_INSTR pminub, mmx2, 0, 0, 1
AVX_INSTR pminuw, sse4, 0, 0, 1
AVX_INSTR pminud, sse4, 0, 0, 1
AVX_INSTR pmovmskb, mmx2
AVX_INSTR pmovsxbw, sse4
AVX_INSTR pmovsxbd, sse4
AVX_INSTR pmovsxbq, sse4
AVX_INSTR pmovsxwd, sse4
AVX_INSTR pmovsxwq, sse4
AVX_INSTR pmovsxdq, sse4
AVX_INSTR pmovzxbw, sse4
AVX_INSTR pmovzxbd, sse4
AVX_INSTR pmovzxbq, sse4
AVX_INSTR pmovzxwd, sse4
AVX_INSTR pmovzxwq, sse4
AVX_INSTR pmovzxdq, sse4
AVX_INSTR pmuldq, sse4, 0, 0, 1
AVX_INSTR pmulhrsw, ssse3, 0, 0, 1
AVX_INSTR pmulhuw, mmx2, 0, 0, 1
AVX_INSTR pmulhw, mmx, 0, 0, 1
AVX_INSTR pmullw, mmx, 0, 0, 1
AVX_INSTR pmulld, sse4, 0, 0, 1
AVX_INSTR pmuludq, sse2, 0, 0, 1
AVX_INSTR por, mmx, 0, 0, 1
AVX_INSTR psadbw, mmx2, 0, 0, 1
AVX_INSTR pshufb, ssse3, 0, 0, 0
AVX_INSTR pshufd, sse2
AVX_INSTR pshufhw, sse2
AVX_INSTR pshuflw, sse2
AVX_INSTR psignb, ssse3, 0, 0, 0
AVX_INSTR psignw, ssse3, 0, 0, 0
AVX_INSTR psignd, ssse3, 0, 0, 0
AVX_INSTR psllw, mmx, 0, 0, 0
AVX_INSTR pslld, mmx, 0, 0, 0
AVX_INSTR psllq, mmx, 0, 0, 0
AVX_INSTR pslldq, sse2, 0, 0, 0
AVX_INSTR psraw, mmx, 0, 0, 0
AVX_INSTR psrad, mmx, 0, 0, 0
AVX_INSTR psrlw, mmx, 0, 0, 0
AVX_INSTR psrld, mmx, 0, 0, 0
AVX_INSTR psrlq, mmx, 0, 0, 0
AVX_INSTR psrldq, sse2, 0, 0, 0
AVX_INSTR psubb, mmx, 0, 0, 0
AVX_INSTR psubw, mmx, 0, 0, 0
AVX_INSTR psubd, mmx, 0, 0, 0
AVX_INSTR psubq, sse2, 0, 0, 0
AVX_INSTR psubsb, mmx, 0, 0, 0
AVX_INSTR psubsw, mmx, 0, 0, 0
AVX_INSTR psubusb, mmx, 0, 0, 0
AVX_INSTR psubusw, mmx, 0, 0, 0
AVX_INSTR ptest, sse4
AVX_INSTR punpckhbw, mmx, 0, 0, 0
AVX_INSTR punpckhwd, mmx, 0, 0, 0
AVX_INSTR punpckhdq, mmx, 0, 0, 0
AVX_INSTR punpckhqdq, sse2, 0, 0, 0
AVX_INSTR punpcklbw, mmx, 0, 0, 0
AVX_INSTR punpcklwd, mmx, 0, 0, 0
AVX_INSTR punpckldq, mmx, 0, 0, 0
AVX_INSTR punpcklqdq, sse2, 0, 0, 0
AVX_INSTR pxor, mmx, 0, 0, 1
AVX_INSTR rcpps, sse
AVX_INSTR rcpss, sse, 1, 0, 0
AVX_INSTR roundpd, sse4
AVX_INSTR roundps, sse4
AVX_INSTR roundsd, sse4, 1, 1, 0
AVX_INSTR roundss, sse4, 1, 1, 0
AVX_INSTR rsqrtps, sse
AVX_INSTR rsqrtss, sse, 1, 0, 0
AVX_INSTR shufpd, sse2, 1, 1, 0
AVX_INSTR shufps, sse, 1, 1, 0
AVX_INSTR sqrtpd, sse2
AVX_INSTR sqrtps, sse
AVX_INSTR sqrtsd, sse2, 1, 0, 0
AVX_INSTR sqrtss, sse, 1, 0, 0
AVX_INSTR stmxcsr, sse
AVX_INSTR subpd, sse2, 1, 0, 0
AVX_INSTR subps, sse, 1, 0, 0
AVX_INSTR subsd, sse2, 1, 0, 0
AVX_INSTR subss, sse, 1, 0, 0
AVX_INSTR ucomisd, sse2
AVX_INSTR ucomiss, sse
AVX_INSTR unpckhpd, sse2, 1, 0, 0
AVX_INSTR unpckhps, sse, 1, 0, 0
AVX_INSTR unpcklpd, sse2, 1, 0, 0
AVX_INSTR unpcklps, sse, 1, 0, 0
AVX_INSTR xorpd, sse2, 1, 0, 1
AVX_INSTR xorps, sse, 1, 0, 1
; 3DNow instructions, for sharing code between AVX, SSE and 3DN
AVX_INSTR pfadd, 3dnow, 1, 0, 1
AVX_INSTR pfsub, 3dnow, 1, 0, 0
AVX_INSTR pfmul, 3dnow, 1, 0, 1
; base-4 constants for shuffles
%assign i 0
%rep 256
%assign j ((i>>6)&3)*1000 + ((i>>4)&3)*100 + ((i>>2)&3)*10 + (i&3)
%if j < 10
CAT_XDEFINE q000, j, i
%elif j < 100
CAT_XDEFINE q00, j, i
%elif j < 1000
CAT_XDEFINE q0, j, i
%else
CAT_XDEFINE q, j, i
%endif
%assign i i+1
%endrep
%undef i
%undef j
%macro FMA_INSTR 3
%macro %1 4-7 %1, %2, %3
%if cpuflag(xop)
v%5 %1, %2, %3, %4
%elifnidn %1, %4
%6 %1, %2, %3
%7 %1, %4
%else
%error non-xop emulation of ``%5 %1, %2, %3, %4'' is not supported
%endif
%endmacro
%endmacro
FMA_INSTR pmacsww, pmullw, paddw
FMA_INSTR pmacsdd, pmulld, paddd ; sse4 emulation
FMA_INSTR pmacsdql, pmuldq, paddq ; sse4 emulation
FMA_INSTR pmadcswd, pmaddwd, paddd
; tzcnt is equivalent to "rep bsf" and is backwards-compatible with bsf.
; This lets us use tzcnt without bumping the yasm version requirement yet.
%define tzcnt rep bsf
; Macros for consolidating FMA3 and FMA4 using 4-operand (dst, src1, src2, src3) syntax.
; FMA3 is only possible if dst is the same as one of the src registers.
; Either src2 or src3 can be a memory operand.
%macro FMA4_INSTR 2-*
%push fma4_instr
%xdefine %$prefix %1
%rep %0 - 1
%macro %$prefix%2 4-6 %$prefix, %2
%if notcpuflag(fma3) && notcpuflag(fma4)
%error use of ``%5%6'' fma instruction in cpuname function: current_function
%elif cpuflag(fma4)
v%5%6 %1, %2, %3, %4
%elifidn %1, %2
; If %3 or %4 is a memory operand it needs to be encoded as the last operand.
%ifnum sizeof%3
v%{5}213%6 %2, %3, %4
%else
v%{5}132%6 %2, %4, %3
%endif
%elifidn %1, %3
v%{5}213%6 %3, %2, %4
%elifidn %1, %4
v%{5}231%6 %4, %2, %3
%else
%error fma3 emulation of ``%5%6 %1, %2, %3, %4'' is not supported
%endif
%endmacro
%rotate 1
%endrep
%pop
%endmacro
FMA4_INSTR fmadd, pd, ps, sd, ss
FMA4_INSTR fmaddsub, pd, ps
FMA4_INSTR fmsub, pd, ps, sd, ss
FMA4_INSTR fmsubadd, pd, ps
FMA4_INSTR fnmadd, pd, ps, sd, ss
FMA4_INSTR fnmsub, pd, ps, sd, ss
; Macros for converting VEX instructions to equivalent EVEX ones.
%macro EVEX_INSTR 2-3 0 ; vex, evex, prefer_evex
%macro %1 2-7 fnord, fnord, %1, %2, %3
%ifidn %3, fnord
%define %%args %1, %2
%elifidn %4, fnord
%define %%args %1, %2, %3
%else
%define %%args %1, %2, %3, %4
%endif
%assign %%evex_required cpuflag(avx512) & %7
%ifnum regnumof%1
%if regnumof%1 >= 16 || sizeof%1 > 32
%assign %%evex_required 1
%endif
%endif
%ifnum regnumof%2
%if regnumof%2 >= 16 || sizeof%2 > 32
%assign %%evex_required 1
%endif
%endif
%if %%evex_required
%6 %%args
%else
%5 %%args ; Prefer VEX over EVEX due to shorter instruction length
%endif
%endmacro
%endmacro
EVEX_INSTR vbroadcastf128, vbroadcastf32x4
EVEX_INSTR vbroadcasti128, vbroadcasti32x4
EVEX_INSTR vextractf128, vextractf32x4
EVEX_INSTR vextracti128, vextracti32x4
EVEX_INSTR vinsertf128, vinsertf32x4
EVEX_INSTR vinserti128, vinserti32x4
EVEX_INSTR vmovdqa, vmovdqa32
EVEX_INSTR vmovdqu, vmovdqu32
EVEX_INSTR vpand, vpandd
EVEX_INSTR vpandn, vpandnd
EVEX_INSTR vpor, vpord
EVEX_INSTR vpxor, vpxord
EVEX_INSTR vrcpps, vrcp14ps, 1 ; EVEX versions have higher precision
EVEX_INSTR vrcpss, vrcp14ss, 1
EVEX_INSTR vrsqrtps, vrsqrt14ps, 1
EVEX_INSTR vrsqrtss, vrsqrt14ss, 1
; workaround: vpbroadcastq is broken in x86_32 due to a yasm bug (fixed in 1.3.0)
%ifdef __YASM_VER__
%if __YASM_VERSION_ID__ < 0x01030000 && ARCH_X86_64 == 0
%macro vpbroadcastq 2
%if sizeof%1 == 16
movddup %1, %2
%else
vbroadcastsd %1, %2
%endif
%endmacro
%endif
%endif
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