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_arm64.masm | 26 ++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 contrib/SDL-3.2.8/src/stdlib/SDL_mslibc_arm64.masm

(limited to 'contrib/SDL-3.2.8/src/stdlib/SDL_mslibc_arm64.masm')

diff --git a/contrib/SDL-3.2.8/src/stdlib/SDL_mslibc_arm64.masm b/contrib/SDL-3.2.8/src/stdlib/SDL_mslibc_arm64.masm
new file mode 100644
index 0000000..a769cc1
--- /dev/null
+++ b/contrib/SDL-3.2.8/src/stdlib/SDL_mslibc_arm64.masm
@@ -0,0 +1,26 @@
+TeStackLimit EQU 0x00010
+PAGE_SIZE equ 0x1000
+
+    AREA CODE, READONLY
+
+    EXPORT __chkstk
+
+__chkstk PROC
+    ldr                          x17,[x18, #TeStackLimit]
+    subs                         x16,sp,x15, LSL  #0x4
+    csel                         x16,xzr,x16,cc
+    cmp                          x16,x17
+    b.cc                         chkstk_start_loop
+    ret
+chkstk_start_loop
+    and                          x16,x16,#-PAGE_SIZE
+chkstk_loop
+    sub                          x17,x17,#0x1, LSL #12
+    ldr                          xzr,[x17]
+    cmp                          x17,x16
+    b.ne                         chkstk_loop
+    ret
+
+    ENDP
+
+    END
-- 
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