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x86inc: support stack mem allocation and re-alignment in PROLOGUE 

Use this in VP8/H264-8bit loopfilter functions so they can be used if
there is no aligned stack (e.g. MSVC 32bit or ICC 10.x).

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
tags/n1.1
Ronald S. Bultje Luca Barbato 12 years ago
parent
14758e3211
commit
6f40e9f070
5 changed files with 191 additions and 101 deletions
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  1. +6
    -21
      libavcodec/x86/h264_deblock.asm
  2. +1
    -3
      libavcodec/x86/h264dsp_init.c
  3. +35
    -33
      libavcodec/x86/vp8dsp.asm
  4. +0
    -8
      libavcodec/x86/vp8dsp_init.c
  5. +149
    -36
      libavutil/x86/x86inc.asm

+ 6
- 21
libavcodec/x86/h264_deblock.asm View File

@@ -398,14 +398,12 @@ DEBLOCK_LUMA
;-----------------------------------------------------------------------------
; void deblock_v8_luma( uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0 )
;-----------------------------------------------------------------------------
cglobal deblock_%1_luma_8, 5,5
cglobal deblock_%1_luma_8, 5,5,8,2*%2
lea r4, [r1*3]
dec r2 ; alpha-1
neg r4
dec r3 ; beta-1
add r4, r0 ; pix-3*stride
%assign pad 2*%2+12-(stack_offset&15)
SUB esp, pad

mova m0, [r4+r1] ; p1
mova m1, [r4+2*r1] ; p0
@@ -443,22 +441,19 @@ cglobal deblock_%1_luma_8, 5,5
DEBLOCK_P0_Q0
mova [r4+2*r1], m1
mova [r0], m2
ADD esp, pad
RET

;-----------------------------------------------------------------------------
; void deblock_h_luma( uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0 )
;-----------------------------------------------------------------------------
INIT_MMX cpuname
cglobal deblock_h_luma_8, 0,5
cglobal deblock_h_luma_8, 0,5,8,0x60+HAVE_ALIGNED_STACK*12
mov r0, r0mp
mov r3, r1m
lea r4, [r3*3]
sub r0, 4
lea r1, [r0+r4]
%assign pad 0x78-(stack_offset&15)
SUB esp, pad
%define pix_tmp esp+12
%define pix_tmp esp+12*HAVE_ALIGNED_STACK

; transpose 6x16 -> tmp space
TRANSPOSE6x8_MEM PASS8ROWS(r0, r1, r3, r4), pix_tmp
@@ -500,7 +495,6 @@ cglobal deblock_h_luma_8, 0,5
movq m3, [pix_tmp+0x48]
TRANSPOSE8x4B_STORE PASS8ROWS(r0, r1, r3, r4)

ADD esp, pad
RET
%endmacro ; DEBLOCK_LUMA

@@ -631,7 +625,7 @@ DEBLOCK_LUMA v, 16
%define mpb_0 m14
%define mpb_1 m15
%else
%define spill(x) [esp+16*x+((stack_offset+4)&15)]
%define spill(x) [esp+16*x]
%define p2 [r4+r1]
%define q2 [r0+2*r1]
%define t4 spill(0)
@@ -646,10 +640,7 @@ DEBLOCK_LUMA v, 16
;-----------------------------------------------------------------------------
; void deblock_v_luma_intra( uint8_t *pix, int stride, int alpha, int beta )
;-----------------------------------------------------------------------------
cglobal deblock_%1_luma_intra_8, 4,6,16
%if ARCH_X86_64 == 0
sub esp, 0x60
%endif
cglobal deblock_%1_luma_intra_8, 4,6,16,ARCH_X86_64*0x50-0x50
lea r4, [r1*4]
lea r5, [r1*3] ; 3*stride
dec r2d ; alpha-1
@@ -698,9 +689,6 @@ cglobal deblock_%1_luma_intra_8, 4,6,16
LUMA_INTRA_SWAP_PQ
LUMA_INTRA_P012 [r0], [r0+r1], [r0+2*r1], [r0+r5]
.end:
%if ARCH_X86_64 == 0
add esp, 0x60
%endif
RET

INIT_MMX cpuname
@@ -737,12 +725,10 @@ cglobal deblock_h_luma_intra_8, 4,9
add rsp, 0x88
RET
%else
cglobal deblock_h_luma_intra_8, 2,4
cglobal deblock_h_luma_intra_8, 2,4,8,0x80
lea r3, [r1*3]
sub r0, 4
lea r2, [r0+r3]
%assign pad 0x8c-(stack_offset&15)
SUB rsp, pad
%define pix_tmp rsp

; transpose 8x16 -> tmp space
@@ -773,7 +759,6 @@ cglobal deblock_h_luma_intra_8, 2,4
lea r0, [r0+r1*8]
lea r2, [r2+r1*8]
TRANSPOSE8x8_MEM PASS8ROWS(pix_tmp+8, pix_tmp+0x38, 0x10, 0x30), PASS8ROWS(r0, r2, r1, r3)
ADD rsp, pad
RET
%endif ; ARCH_X86_64
%endmacro ; DEBLOCK_LUMA_INTRA


+ 1
- 3
libavcodec/x86/h264dsp_init.c View File

@@ -275,18 +275,16 @@ void ff_h264dsp_init_x86(H264DSPContext *c, const int bit_depth,
c->biweight_h264_pixels_tab[0] = ff_h264_biweight_16_sse2;
c->biweight_h264_pixels_tab[1] = ff_h264_biweight_8_sse2;

#if HAVE_ALIGNED_STACK
c->h264_v_loop_filter_luma = ff_deblock_v_luma_8_sse2;
c->h264_h_loop_filter_luma = ff_deblock_h_luma_8_sse2;
c->h264_v_loop_filter_luma_intra = ff_deblock_v_luma_intra_8_sse2;
c->h264_h_loop_filter_luma_intra = ff_deblock_h_luma_intra_8_sse2;
#endif /* HAVE_ALIGNED_STACK */
}
if (EXTERNAL_SSSE3(mm_flags)) {
c->biweight_h264_pixels_tab[0] = ff_h264_biweight_16_ssse3;
c->biweight_h264_pixels_tab[1] = ff_h264_biweight_8_ssse3;
}
if (EXTERNAL_AVX(mm_flags) && HAVE_ALIGNED_STACK) {
if (EXTERNAL_AVX(mm_flags)) {
c->h264_v_loop_filter_luma = ff_deblock_v_luma_8_avx;
c->h264_h_loop_filter_luma = ff_deblock_h_luma_8_avx;
c->h264_v_loop_filter_luma_intra = ff_deblock_v_luma_intra_8_avx;


+ 35
- 33
libavcodec/x86/vp8dsp.asm View File

@@ -1631,28 +1631,31 @@ SIMPLE_LOOPFILTER h, 5
;-----------------------------------------------------------------------------

%macro INNER_LOOPFILTER 2
%define stack_size 0
%ifndef m8 ; stack layout: [0]=E, [1]=I, [2]=hev_thr
%ifidn %1, v ; [3]=hev() result
%define stack_size mmsize * -4
%else ; h ; extra storage space for transposes
%define stack_size mmsize * -5
%endif
%endif

%if %2 == 8 ; chroma
cglobal vp8_%1_loop_filter8uv_inner, 6, 6, 13, dst, dst8, stride, flimE, flimI, hevthr
cglobal vp8_%1_loop_filter8uv_inner, 6, 6, 13, stack_size, dst, dst8, stride, flimE, flimI, hevthr
%else ; luma
cglobal vp8_%1_loop_filter16y_inner, 5, 5, 13, dst, stride, flimE, flimI, hevthr
cglobal vp8_%1_loop_filter16y_inner, 5, 5, 13, stack_size, dst, stride, flimE, flimI, hevthr
%endif

%if cpuflag(ssse3)
pxor m7, m7
%endif
%ifndef m8 ; stack layout: [0]=E, [1]=I, [2]=hev_thr
%ifidn %1, v ; [3]=hev() result
%assign pad 16 + mmsize * 4 - gprsize - (stack_offset & 15)
%else ; h ; extra storage space for transposes
%assign pad 16 + mmsize * 5 - gprsize - (stack_offset & 15)
%endif

%ifndef m8
; splat function arguments
SPLATB_REG m0, flimEq, m7 ; E
SPLATB_REG m1, flimIq, m7 ; I
SPLATB_REG m2, hevthrq, m7 ; hev_thresh

SUB rsp, pad

%define m_flimE [rsp]
%define m_flimI [rsp+mmsize]
%define m_hevthr [rsp+mmsize*2]
@@ -2082,12 +2085,10 @@ cglobal vp8_%1_loop_filter16y_inner, 5, 5, 13, dst, stride, flimE, flimI, hevthr
dec cntrq
jg .next8px
%endif
%endif

%ifndef m8 ; sse2 on x86-32 or mmx/mmxext
ADD rsp, pad
%endif
REP_RET
%else ; mmsize == 16
RET
%endif
%endmacro

%if ARCH_X86_32
@@ -2122,31 +2123,34 @@ INNER_LOOPFILTER h, 8
;-----------------------------------------------------------------------------

%macro MBEDGE_LOOPFILTER 2
%if %2 == 8 ; chroma
cglobal vp8_%1_loop_filter8uv_mbedge, 6, 6, 15, dst1, dst8, stride, flimE, flimI, hevthr
%else ; luma
cglobal vp8_%1_loop_filter16y_mbedge, 5, 5, 15, dst1, stride, flimE, flimI, hevthr
%endif

%if cpuflag(ssse3)
pxor m7, m7
%endif
%define stack_size 0
%ifndef m8 ; stack layout: [0]=E, [1]=I, [2]=hev_thr
%if mmsize == 16 ; [3]=hev() result
; [4]=filter tmp result
; [5]/[6] = p2/q2 backup
; [7]=lim_res sign result
%assign pad 16 + mmsize * 7 - gprsize - (stack_offset & 15)
%define stack_size mmsize * -7
%else ; 8 ; extra storage space for transposes
%assign pad 16 + mmsize * 8 - gprsize - (stack_offset & 15)
%define stack_size mmsize * -8
%endif
%endif

%if %2 == 8 ; chroma
cglobal vp8_%1_loop_filter8uv_mbedge, 6, 6, 15, stack_size, dst1, dst8, stride, flimE, flimI, hevthr
%else ; luma
cglobal vp8_%1_loop_filter16y_mbedge, 5, 5, 15, stack_size, dst1, stride, flimE, flimI, hevthr
%endif

%if cpuflag(ssse3)
pxor m7, m7
%endif

%ifndef m8
; splat function arguments
SPLATB_REG m0, flimEq, m7 ; E
SPLATB_REG m1, flimIq, m7 ; I
SPLATB_REG m2, hevthrq, m7 ; hev_thresh

SUB rsp, pad

%define m_flimE [rsp]
%define m_flimI [rsp+mmsize]
%define m_hevthr [rsp+mmsize*2]
@@ -2740,12 +2744,10 @@ cglobal vp8_%1_loop_filter16y_mbedge, 5, 5, 15, dst1, stride, flimE, flimI, hevt
dec cntrq
jg .next8px
%endif
%endif

%ifndef m8 ; sse2 on x86-32 or mmx/mmxext
ADD rsp, pad
%endif
REP_RET
%else ; mmsize == 16
RET
%endif
%endmacro

%if ARCH_X86_32


+ 0
- 8
libavcodec/x86/vp8dsp_init.c View File

@@ -390,13 +390,11 @@ av_cold void ff_vp8dsp_init_x86(VP8DSPContext* c)

c->vp8_v_loop_filter_simple = ff_vp8_v_loop_filter_simple_sse2;

#if ARCH_X86_64 || HAVE_ALIGNED_STACK
c->vp8_v_loop_filter16y_inner = ff_vp8_v_loop_filter16y_inner_sse2;
c->vp8_v_loop_filter8uv_inner = ff_vp8_v_loop_filter8uv_inner_sse2;

c->vp8_v_loop_filter16y = ff_vp8_v_loop_filter16y_mbedge_sse2;
c->vp8_v_loop_filter8uv = ff_vp8_v_loop_filter8uv_mbedge_sse2;
#endif
}

if (mm_flags & AV_CPU_FLAG_SSE2) {
@@ -404,13 +402,11 @@ av_cold void ff_vp8dsp_init_x86(VP8DSPContext* c)

c->vp8_h_loop_filter_simple = ff_vp8_h_loop_filter_simple_sse2;

#if ARCH_X86_64 || HAVE_ALIGNED_STACK
c->vp8_h_loop_filter16y_inner = ff_vp8_h_loop_filter16y_inner_sse2;
c->vp8_h_loop_filter8uv_inner = ff_vp8_h_loop_filter8uv_inner_sse2;

c->vp8_h_loop_filter16y = ff_vp8_h_loop_filter16y_mbedge_sse2;
c->vp8_h_loop_filter8uv = ff_vp8_h_loop_filter8uv_mbedge_sse2;
#endif
}

if (mm_flags & AV_CPU_FLAG_SSSE3) {
@@ -424,7 +420,6 @@ av_cold void ff_vp8dsp_init_x86(VP8DSPContext* c)
c->vp8_v_loop_filter_simple = ff_vp8_v_loop_filter_simple_ssse3;
c->vp8_h_loop_filter_simple = ff_vp8_h_loop_filter_simple_ssse3;

#if ARCH_X86_64 || HAVE_ALIGNED_STACK
c->vp8_v_loop_filter16y_inner = ff_vp8_v_loop_filter16y_inner_ssse3;
c->vp8_h_loop_filter16y_inner = ff_vp8_h_loop_filter16y_inner_ssse3;
c->vp8_v_loop_filter8uv_inner = ff_vp8_v_loop_filter8uv_inner_ssse3;
@@ -434,17 +429,14 @@ av_cold void ff_vp8dsp_init_x86(VP8DSPContext* c)
c->vp8_h_loop_filter16y = ff_vp8_h_loop_filter16y_mbedge_ssse3;
c->vp8_v_loop_filter8uv = ff_vp8_v_loop_filter8uv_mbedge_ssse3;
c->vp8_h_loop_filter8uv = ff_vp8_h_loop_filter8uv_mbedge_ssse3;
#endif
}

if (mm_flags & AV_CPU_FLAG_SSE4) {
c->vp8_idct_dc_add = ff_vp8_idct_dc_add_sse4;

c->vp8_h_loop_filter_simple = ff_vp8_h_loop_filter_simple_sse4;
#if ARCH_X86_64 || HAVE_ALIGNED_STACK
c->vp8_h_loop_filter16y = ff_vp8_h_loop_filter16y_mbedge_sse4;
c->vp8_h_loop_filter8uv = ff_vp8_h_loop_filter8uv_mbedge_sse4;
#endif
}
#endif /* HAVE_YASM */
}

+ 149
- 36
libavutil/x86/x86inc.asm View File

@@ -111,7 +111,12 @@ CPUNOP amdnop
; %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 = list of names to define to registers
; %4 = (optional) stack size to be allocated. If not aligned (x86-32 ICC 10.x,
; MSVC or YMM), the stack will be manually aligned (to 16 or 32 bytes),
; 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.
@@ -147,11 +152,11 @@ CPUNOP amdnop
%define r%1m %2d
%define r%1mp %2
%elif ARCH_X86_64 ; memory
%define r%1m [rsp + stack_offset + %3]
%define r%1mp qword r %+ %1 %+ m
%define r%1m [rstk + stack_offset + %3]
%define r%1mp qword r %+ %1m
%else
%define r%1m [esp + stack_offset + %3]
%define r%1mp dword r %+ %1 %+ m
%define r%1m [rstk + stack_offset + %3]
%define r%1mp dword r %+ %1m
%endif
%define r%1 %2
%endmacro
@@ -212,12 +217,16 @@ DECLARE_REG_TMP_SIZE 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14

%macro PUSH 1
push %1
%assign stack_offset stack_offset+gprsize
%ifidn rstk, rsp
%assign stack_offset stack_offset+gprsize
%endif
%endmacro

%macro POP 1
pop %1
%assign stack_offset stack_offset-gprsize
%ifidn rstk, rsp
%assign stack_offset stack_offset-gprsize
%endif
%endmacro

%macro PUSH_IF_USED 1-*
@@ -249,14 +258,14 @@ DECLARE_REG_TMP_SIZE 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14

%macro SUB 2
sub %1, %2
%ifidn %1, rsp
%ifidn %1, rstk
%assign stack_offset stack_offset+(%2)
%endif
%endmacro

%macro ADD 2
add %1, %2
%ifidn %1, rsp
%ifidn %1, rstk
%assign stack_offset stack_offset-(%2)
%endif
%endmacro
@@ -314,6 +323,73 @@ DECLARE_REG_TMP_SIZE 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14
%assign n_arg_names %0
%endmacro

%macro ALLOC_STACK 1-2 0 ; stack_size, n_xmm_regs (for win64 only)
%ifnum %1
%if %1 != 0
%assign %%stack_alignment ((mmsize + 15) & ~15)
%assign stack_size %1
%if stack_size < 0
%assign stack_size -stack_size
%endif
%assign xmm_regs_used %2
%if mmsize <= 16 && HAVE_ALIGNED_STACK
%assign stack_size_padded stack_size + %%stack_alignment - gprsize - (stack_offset & (%%stack_alignment - 1))
%if xmm_regs_used > 6
%assign stack_size_padded stack_size_padded + (xmm_regs_used - 6) * 16
%endif
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])
mov rstk, rsp
%assign stack_size_padded stack_size
%if xmm_regs_used > 6
%assign stack_size_padded stack_size_padded + (xmm_regs_used - 6) * 16
%endif
%if %1 < 0 ; need to store rsp on stack
sub rsp, gprsize+stack_size_padded
and rsp, ~(%%stack_alignment-1)
%xdefine rstkm [rsp+stack_size_padded]
mov rstkm, rstk
%else ; can keep rsp in rstk during whole function
sub rsp, stack_size_padded
and rsp, ~(%%stack_alignment-1)
%xdefine rstkm rstk
%endif
%endif
%if xmm_regs_used > 6
WIN64_PUSH_XMM
%endif
%endif
%endif
%endmacro

%macro SETUP_STACK_POINTER 1
%ifnum %1
%if %1 != 0 && (HAVE_ALIGNED_STACK == 0 || mmsize == 32)
%if %1 > 0
%assign regs_used (regs_used + 1)
%elif ARCH_X86_64 && regs_used == num_args && num_args <= 4 + UNIX64 * 2
%warning "Stack pointer will overwrite register argument"
%endif
%endif
%endif
%endmacro

%macro DEFINE_ARGS_INTERNAL 3+
%ifnum %2
DEFINE_ARGS %3
%elif %1 == 4
DEFINE_ARGS %2
%elif %1 > 4
DEFINE_ARGS %2, %3
%endif
%endmacro

%if WIN64 ; Windows x64 ;=================================================

DECLARE_REG 0, rcx
@@ -332,31 +408,37 @@ 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...
%macro PROLOGUE 2-5+ 0 ; #args, #regs, #xmm_regs, [stack_size,] arg_names...
%assign num_args %1
%assign regs_used %2
SETUP_STACK_POINTER %4
ASSERT regs_used >= num_args
ASSERT regs_used <= 15
PUSH_IF_USED 7, 8, 9, 10, 11, 12, 13, 14
%if mmsize == 8
%assign xmm_regs_used 0
%else
%assign xmm_regs_used 0
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
DEFINE_ARGS %4
DEFINE_ARGS_INTERNAL %0, %4, %5
%endmacro

%macro WIN64_PUSH_XMM 0
%assign %%i xmm_regs_used
%rep (xmm_regs_used-6)
%assign %%i %%i-1
movdqa [rsp + (%%i-6)*16 + stack_size], xmm %+ %%i
%endrep
%endmacro

%macro WIN64_SPILL_XMM 1
%assign xmm_regs_used %1
ASSERT xmm_regs_used <= 16
%if xmm_regs_used > 6
SUB rsp, (xmm_regs_used-6)*16+16
%assign %%i xmm_regs_used
%rep (xmm_regs_used-6)
%assign %%i %%i-1
movdqa [rsp + (%%i-6)*16+(~stack_offset&8)], xmm %+ %%i
%endrep
%assign stack_size_padded (xmm_regs_used-6)*16+16-gprsize-(stack_offset&15)
SUB rsp, stack_size_padded
WIN64_PUSH_XMM
%endif
%endmacro

@@ -365,19 +447,25 @@ DECLARE_REG 14, R15, 120
%assign %%i xmm_regs_used
%rep (xmm_regs_used-6)
%assign %%i %%i-1
movdqa xmm %+ %%i, [%1 + (%%i-6)*16+(~stack_offset&8)]
movdqa xmm %+ %%i, [%1 + (%%i-6)*16+stack_size]
%endrep
add %1, (xmm_regs_used-6)*16+16
%endif
%if stack_size_padded > 0
%if stack_size > 0 && (mmsize == 32 || HAVE_ALIGNED_STACK == 0)
mov rsp, rstkm
%else
add %1, stack_size_padded
%endif
%endif
%endmacro

%macro WIN64_RESTORE_XMM 1
WIN64_RESTORE_XMM_INTERNAL %1
%assign stack_offset stack_offset-(xmm_regs_used-6)*16+16
%assign stack_offset (stack_offset-stack_size_padded)
%assign xmm_regs_used 0
%endmacro

%define has_epilogue regs_used > 7 || xmm_regs_used > 6 || mmsize == 32
%define has_epilogue regs_used > 7 || xmm_regs_used > 6 || mmsize == 32 || stack_size > 0

%macro RET 0
WIN64_RESTORE_XMM_INTERNAL rsp
@@ -406,19 +494,28 @@ 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...
%macro PROLOGUE 2-5+ ; #args, #regs, #xmm_regs, [stack_size,] arg_names...
%assign num_args %1
%assign regs_used %2
SETUP_STACK_POINTER %4
ASSERT regs_used >= num_args
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
DEFINE_ARGS %4
DEFINE_ARGS_INTERNAL %0, %4, %5
%endmacro

%define has_epilogue regs_used > 9 || mmsize == 32
%define has_epilogue regs_used > 9 || mmsize == 32 || stack_size > 0

%macro RET 0
%if stack_size_padded > 0
%if mmsize == 32 || HAVE_ALIGNED_STACK == 0
mov rsp, rstkm
%else
add rsp, stack_size_padded
%endif
%endif
POP_IF_USED 14, 13, 12, 11, 10, 9
%if mmsize == 32
vzeroupper
@@ -439,7 +536,7 @@ DECLARE_REG 6, ebp, 28

%macro DECLARE_ARG 1-*
%rep %0
%define r%1m [esp + stack_offset + 4*%1 + 4]
%define r%1m [rstk + stack_offset + 4*%1 + 4]
%define r%1mp dword r%1m
%rotate 1
%endrep
@@ -447,24 +544,31 @@ DECLARE_REG 6, ebp, 28

DECLARE_ARG 7, 8, 9, 10, 11, 12, 13, 14

%macro PROLOGUE 2-4+ ; #args, #regs, #xmm_regs, arg_names...
%macro PROLOGUE 2-5+ ; #args, #regs, #xmm_regs, [stack_size,] arg_names...
%assign num_args %1
%assign regs_used %2
%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
ASSERT regs_used >= num_args
PUSH_IF_USED 3, 4, 5, 6
ALLOC_STACK %4
LOAD_IF_USED 0, 1, 2, 3, 4, 5, 6
DEFINE_ARGS %4
DEFINE_ARGS_INTERNAL %0, %4, %5
%endmacro

%define has_epilogue regs_used > 3 || mmsize == 32
%define has_epilogue regs_used > 3 || mmsize == 32 || stack_size > 0

%macro RET 0
%if stack_size_padded > 0
%if mmsize == 32 || HAVE_ALIGNED_STACK == 0
mov rsp, rstkm
%else
add rsp, stack_size_padded
%endif
%endif
POP_IF_USED 6, 5, 4, 3
%if mmsize == 32
vzeroupper
@@ -479,6 +583,8 @@ DECLARE_ARG 7, 8, 9, 10, 11, 12, 13, 14
%endmacro
%macro WIN64_RESTORE_XMM 1
%endmacro
%macro WIN64_PUSH_XMM 0
%endmacro
%endif

%macro REP_RET 0
@@ -508,8 +614,12 @@ DECLARE_ARG 7, 8, 9, 10, 11, 12, 13, 14
; 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.
%macro cglobal 1-2+ "" ; name, [PROLOGUE args]
%macro cglobal 1-2+ ; name, [PROLOGUE args]
%if %0 == 1
cglobal_internal %1 %+ SUFFIX
%else
cglobal_internal %1 %+ SUFFIX, %2
%endif
%endmacro
%macro cglobal_internal 1-2+
%ifndef cglobaled_%1
@@ -526,8 +636,11 @@ DECLARE_ARG 7, 8, 9, 10, 11, 12, 13, 14
align function_align
%1:
RESET_MM_PERMUTATION ; not really needed, but makes disassembly somewhat nicer
%xdefine rstk rsp
%assign stack_offset 0
%ifnidn %2, ""
%assign stack_size 0
%assign stack_size_padded 0
%if %0 > 1
PROLOGUE %2
%endif
%endmacro


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