From c2c2a95708685156a643e920b497d48597e0267c Mon Sep 17 00:00:00 2001
From: Anton Mitrofanov <BugMaster@narod.ru>
Date: Mon, 25 Feb 2013 19:28:19 +0400
Subject: [PATCH] x86: don't use the red zone on win64

---
 common/x86/cpu-a.asm     |  3 +++
 common/x86/deblock-a.asm |  6 +++++-
 common/x86/mc-a.asm      |  4 ++++
 common/x86/pixel-a.asm   | 15 ++++++++-------
 4 files changed, 20 insertions(+), 8 deletions(-)

diff --git a/common/x86/cpu-a.asm b/common/x86/cpu-a.asm
index 9104db26..ea27158b 100644
--- a/common/x86/cpu-a.asm
+++ b/common/x86/cpu-a.asm
@@ -165,6 +165,9 @@ cglobal safe_intel_cpu_indicator_init
 %endif
     push rbp
     mov  rbp, rsp
+%if WIN64
+    sub  rsp, 32 ; shadow space
+%endif
     and  rsp, ~15
     call intel_cpu_indicator_init
     leave
diff --git a/common/x86/deblock-a.asm b/common/x86/deblock-a.asm
index 4e390646..9692621a 100644
--- a/common/x86/deblock-a.asm
+++ b/common/x86/deblock-a.asm
@@ -1429,7 +1429,11 @@ DEBLOCK_LUMA v, 16
     %define t5 m11
     %define mask0 m12
     %define mask1p m13
+%if WIN64
+    %define mask1q [rsp]
+%else
     %define mask1q [rsp-24]
+%endif
     %define mpb_0 m14
     %define mpb_1 m15
 %else
@@ -1448,7 +1452,7 @@ DEBLOCK_LUMA v, 16
 ;-----------------------------------------------------------------------------
 ; void deblock_v_luma_intra( uint8_t *pix, intptr_t stride, int alpha, int beta )
 ;-----------------------------------------------------------------------------
-cglobal deblock_%1_luma_intra, 4,6,16,ARCH_X86_64*0x50-0x50
+cglobal deblock_%1_luma_intra, 4,6,16,0-(1-ARCH_X86_64)*0x50-WIN64*0x10
     lea     r4, [r1*4]
     lea     r5, [r1*3] ; 3*stride
     dec     r2d        ; alpha-1
diff --git a/common/x86/mc-a.asm b/common/x86/mc-a.asm
index 8161389f..9b46680b 100644
--- a/common/x86/mc-a.asm
+++ b/common/x86/mc-a.asm
@@ -1514,7 +1514,11 @@ ALIGN 4
     mov        t0, r0
     mov        t1, r1
     mov        t2, r3
+%if WIN64
+    %define multy0 r4m
+%else
     %define multy0 [rsp-8]
+%endif
     mova    multy0, m5
 %else
     mov       r3m, r3
diff --git a/common/x86/pixel-a.asm b/common/x86/pixel-a.asm
index 75c3b913..e71017ac 100644
--- a/common/x86/pixel-a.asm
+++ b/common/x86/pixel-a.asm
@@ -1913,15 +1913,16 @@ cglobal hadamard_load
 ; void intra_satd_x3_4x4( uint8_t *fenc, uint8_t *fdec, int *res )
 ;-----------------------------------------------------------------------------
 cglobal intra_satd_x3_4x4, 3,3
-%if ARCH_X86_64
+%if UNIX64
     ; stack is 16 byte aligned because abi says so
     %define  top_1d  rsp-8  ; size 8
     %define  left_1d rsp-16 ; size 8
 %else
-    ; stack is 16 byte aligned at least in gcc, and we've pushed 3 regs + return address, so it's still aligned
-    SUB         esp, 16
-    %define  top_1d  esp+8
-    %define  left_1d esp
+    ; WIN64:  stack is 16 byte aligned because abi says so
+    ; X86_32: stack is 16 byte aligned at least in gcc, and we've pushed 3 regs + return address, so it's still aligned
+    SUB         rsp, 16
+    %define  top_1d  rsp+8
+    %define  left_1d rsp
 %endif
 
     call hadamard_load
@@ -1943,8 +1944,8 @@ cglobal intra_satd_x3_4x4, 3,3
     movd        [r2+0], m0 ; i4x4_v satd
     movd        [r2+4], m4 ; i4x4_h satd
     movd        [r2+8], m5 ; i4x4_dc satd
-%if ARCH_X86_64 == 0
-    ADD         esp, 16
+%if UNIX64 == 0
+    ADD         rsp, 16
 %endif
     RET
 
-- 
2.39.5