From 5a079a2d114f96d4847d1ee305d5b7c16eeec50e Mon Sep 17 00:00:00 2001
From: 3gg <3gg@shellblade.net>
Date: Sat, 27 Dec 2025 12:03:39 -0800
Subject: Initial commit

---
 contrib/SDL-3.2.8/src/stdlib/SDL_mslibc_x64.masm | 29 ++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 contrib/SDL-3.2.8/src/stdlib/SDL_mslibc_x64.masm

(limited to 'contrib/SDL-3.2.8/src/stdlib/SDL_mslibc_x64.masm')

diff --git a/contrib/SDL-3.2.8/src/stdlib/SDL_mslibc_x64.masm b/contrib/SDL-3.2.8/src/stdlib/SDL_mslibc_x64.masm
new file mode 100644
index 0000000..1590d88
--- /dev/null
+++ b/contrib/SDL-3.2.8/src/stdlib/SDL_mslibc_x64.masm
@@ -0,0 +1,29 @@
+include ksamd64.inc
+
+text        SEGMENT EXECUTE
+
+public      __chkstk
+
+__chkstk:
+    sub         rsp,010h
+    mov         QWORD PTR [rsp],r10
+    mov         QWORD PTR [rsp+08h],r11
+    xor         r11,r11
+    lea         r10,[rsp+018h]
+    sub         r10,rax
+    cmovb       r10,r11
+    mov         r11,QWORD PTR gs:[TeStackLimit]
+    cmp         r10,r11
+    jae         chkstk_finish
+    and         r10w,0f000h
+chkstk_loop:
+    lea         r11,[r11-PAGE_SIZE]
+    mov         BYTE PTR [r11],0h
+    cmp         r10,r11
+    jne         chkstk_loop
+chkstk_finish:
+    mov         r10,QWORD PTR [rsp]
+    mov         r11,QWORD PTR [rsp+08h]
+    add         rsp,010h
+    ret
+end
-- 
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