x86inc: sync to latest version from x264.

1 files changed, 124 insertions, 92 deletions

diff --git a/libavutil/x86/x86inc.asm b/libavutil/x86/x86inc.asm
index 4b4a19b208..1030f10a32 100644
--- a/libavutil/x86/x86inc.asm
+++ b/libavutil/x86/x86inc.asm
@@ -36,8 +36,8 @@
 
 %define program_name ff
 
-%define UNIX64 0
 %define WIN64  0
+%define UNIX64 0
 %if ARCH_X86_64
     %ifidn __OUTPUT_FORMAT__,win32
         %define WIN64  1
@@ -54,11 +54,6 @@
     %define mangle(x) x
 %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.
 ; Kludge: Something on OS X fails to align .rodata even given an align attribute,
 ; so use a different read-only section.
@@ -129,34 +124,38 @@ CPU amdnop
 ; 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 5-6
+%macro DECLARE_REG 2-3
     %define r%1q %2
-    %define r%1d %3
-    %define r%1w %4
-    %define r%1b %5
-    %if %0 == 5
-        %define r%1m  %3
+    %define r%1d %2d
+    %define r%1w %2w
+    %define r%1b %2b
+    %define r%1h %2h
+    %if %0 == 2
+        %define r%1m  %2d
         %define r%1mp %2
     %elif ARCH_X86_64 ; memory
-        %define r%1m [rsp + stack_offset + %6]
+        %define r%1m [rsp + stack_offset + %3]
         %define r%1mp qword r %+ %1m
     %else
-        %define r%1m [esp + stack_offset + %6]
+        %define r%1m [esp + stack_offset + %3]
         %define r%1mp dword r %+ %1m
     %endif
     %define r%1  %2
 %endmacro
 
-%macro DECLARE_REG_SIZE 2
+%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
@@ -164,13 +163,13 @@ CPU amdnop
 %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
+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
 
@@ -188,6 +187,7 @@ DECLARE_REG_SIZE bp, bpl
         %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
@@ -277,6 +277,7 @@ DECLARE_REG_TMP_SIZE 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14
             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
@@ -292,6 +293,7 @@ DECLARE_REG_TMP_SIZE 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14
         %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
@@ -305,21 +307,21 @@ DECLARE_REG_TMP_SIZE 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14
 
 %if WIN64 ; Windows x64 ;=================================================
 
-DECLARE_REG 0,  rcx, ecx,  cx,   cl
-DECLARE_REG 1,  rdx, edx,  dx,   dl
-DECLARE_REG 2,  R8,  R8D,  R8W,  R8B
-DECLARE_REG 3,  R9,  R9D,  R9W,  R9B
-DECLARE_REG 4,  R10, R10D, R10W, R10B, 40
-DECLARE_REG 5,  R11, R11D, R11W, R11B, 48
-DECLARE_REG 6,  rax, eax,  ax,   al,   56
-DECLARE_REG 7,  rdi, edi,  di,   dil,  64
-DECLARE_REG 8,  rsi, esi,  si,   sil,  72
-DECLARE_REG 9,  rbx, ebx,  bx,   bl,   80
-DECLARE_REG 10, rbp, ebp,  bp,   bpl,  88
-DECLARE_REG 11, R12, R12D, R12W, R12B, 96
-DECLARE_REG 12, R13, R13D, R13W, R13B, 104
-DECLARE_REG 13, R14, R14D, R14W, R14B, 112
-DECLARE_REG 14, R15, R15D, R15W, R15B, 120
+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, R12, 96
+DECLARE_REG 12, R13, 104
+DECLARE_REG 13, R14, 112
+DECLARE_REG 14, R15, 120
 
 %macro PROLOGUE 2-4+ 0 ; #args, #regs, #xmm_regs, arg_names...
     %assign num_args %1
@@ -366,6 +368,8 @@ DECLARE_REG 14, R15, R15D, R15W, R15B, 120
     %assign xmm_regs_used 0
 %endmacro
 
+%define has_epilogue regs_used > 7 || xmm_regs_used > 6 || mmsize == 32
+
 %macro RET 0
     WIN64_RESTORE_XMM_INTERNAL rsp
     POP_IF_USED 14, 13, 12, 11, 10, 9, 8, 7
@@ -375,31 +379,23 @@ DECLARE_REG 14, R15, R15D, R15W, R15B, 120
     ret
 %endmacro
 
-%macro REP_RET 0
-    %if regs_used > 7 || xmm_regs_used > 6 || mmsize == 32
-        RET
-    %else
-        rep ret
-    %endif
-%endmacro
-
 %elif ARCH_X86_64 ; *nix x64 ;=============================================
 
-DECLARE_REG 0,  rdi, edi,  di,   dil
-DECLARE_REG 1,  rsi, esi,  si,   sil
-DECLARE_REG 2,  rdx, edx,  dx,   dl
-DECLARE_REG 3,  rcx, ecx,  cx,   cl
-DECLARE_REG 4,  R8,  R8D,  R8W,  R8B
-DECLARE_REG 5,  R9,  R9D,  R9W,  R9B
-DECLARE_REG 6,  rax, eax,  ax,   al,   8
-DECLARE_REG 7,  R10, R10D, R10W, R10B, 16
-DECLARE_REG 8,  R11, R11D, R11W, R11B, 24
-DECLARE_REG 9,  rbx, ebx,  bx,   bl,   32
-DECLARE_REG 10, rbp, ebp,  bp,   bpl,  40
-DECLARE_REG 11, R12, R12D, R12W, R12B, 48
-DECLARE_REG 12, R13, R13D, R13W, R13B, 56
-DECLARE_REG 13, R14, R14D, R14W, R14B, 64
-DECLARE_REG 14, R15, R15D, R15W, R15B, 72
+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, R12, 48
+DECLARE_REG 12, R13, 56
+DECLARE_REG 13, R14, 64
+DECLARE_REG 14, R15, 72
 
 %macro PROLOGUE 2-4+ ; #args, #regs, #xmm_regs, arg_names...
     %assign num_args %1
@@ -411,6 +407,8 @@ DECLARE_REG 14, R15, R15D, R15W, R15B, 72
     DEFINE_ARGS %4
 %endmacro
 
+%define has_epilogue regs_used > 9 || mmsize == 32
+
 %macro RET 0
     POP_IF_USED 14, 13, 12, 11, 10, 9
 %if mmsize == 32
@@ -419,23 +417,15 @@ DECLARE_REG 14, R15, R15D, R15W, R15B, 72
     ret
 %endmacro
 
-%macro REP_RET 0
-    %if regs_used > 9 || mmsize == 32
-        RET
-    %else
-        rep ret
-    %endif
-%endmacro
-
 %else ; X86_32 ;==============================================================
 
-DECLARE_REG 0, eax, eax, ax, al,   4
-DECLARE_REG 1, ecx, ecx, cx, cl,   8
-DECLARE_REG 2, edx, edx, dx, dl,   12
-DECLARE_REG 3, ebx, ebx, bx, bl,   16
-DECLARE_REG 4, esi, esi, si, null, 20
-DECLARE_REG 5, edi, edi, di, null, 24
-DECLARE_REG 6, ebp, ebp, bp, null, 28
+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-*
@@ -460,6 +450,8 @@ DECLARE_ARG 7, 8, 9, 10, 11, 12, 13, 14
     DEFINE_ARGS %4
 %endmacro
 
+%define has_epilogue regs_used > 3 || mmsize == 32
+
 %macro RET 0
     POP_IF_USED 6, 5, 4, 3
 %if mmsize == 32
@@ -468,14 +460,6 @@ DECLARE_ARG 7, 8, 9, 10, 11, 12, 13, 14
     ret
 %endmacro
 
-%macro REP_RET 0
-    %if regs_used > 3 || mmsize == 32
-        RET
-    %else
-        rep ret
-    %endif
-%endmacro
-
 %endif ;======================================================================
 
 %if WIN64 == 0
@@ -485,6 +469,23 @@ DECLARE_ARG 7, 8, 9, 10, 11, 12, 13, 14
 %endmacro
 %endif
 
+%macro REP_RET 0
+    %if has_epilogue
+        RET
+    %else
+        rep ret
+    %endif
+%endmacro
+
+%macro TAIL_CALL 2 ; callee, is_nonadjacent
+    %if has_epilogue
+        call %1
+        RET
+    %elif %2
+        jmp %1
+    %endif
+%endmacro
+
 ;=============================================================================
 ; arch-independent part
 ;=============================================================================
@@ -564,6 +565,8 @@ SECTION .note.GNU-stack noalloc noexec nowrite progbits
 %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
 
 %assign cpuflags_cache32  (1<<16)
 %assign cpuflags_cache64  (1<<17)
@@ -572,6 +575,9 @@ SECTION .note.GNU-stack noalloc noexec nowrite progbits
 %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))
@@ -833,25 +839,38 @@ INIT_XMM
 %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 %5
-        %define %%size sizeof%5
+    %ifid %6
+        %define %%sizeofreg sizeof%6
+    %elifid %5
+        %define %%sizeofreg sizeof%5
     %else
-        %define %%size mmsize
+        %define %%sizeofreg mmsize
     %endif
-    %if %%size==32
-        %if %0 >= 7
+    %if %%sizeofreg==32
+        %if %4>=3
             v%1 %5, %6, %7
         %else
             v%1 %5, %6
         %endif
     %else
-        %if %%size==8
+        %if %%sizeofreg==8
             %define %%regmov movq
         %elif %2
             %define %%regmov movaps
@@ -861,16 +880,17 @@ INIT_XMM
 
         %if %4>=3+%3
             %ifnidn %5, %6
-                %if avx_enabled && sizeof%5==16
+                %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 %3
+        %elif %4>=3
             %1 %5, %6, %7
         %else
             %1 %5, %6
@@ -901,7 +921,7 @@ INIT_XMM
 
 ;%1 == instruction
 ;%2 == 1 if float, 0 if int
-;%3 == 1 if 4-operand (xmm, xmm, xmm, imm), 0 if 3-operand (xmm, xmm, xmm)
+;%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
@@ -966,6 +986,9 @@ 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
@@ -1017,6 +1040,7 @@ 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
@@ -1027,6 +1051,9 @@ 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
@@ -1048,6 +1075,7 @@ 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
@@ -1112,3 +1140,7 @@ FMA_INSTR  fmaddps,   mulps, addps
 FMA_INSTR  pmacsdd,  pmulld, paddd
 FMA_INSTR  pmacsww,  pmullw, paddw
 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