SDL/src/stdlib/SDL_mslibc_arm64.masm
Anonymous Maarten 4fbf59ac3a Implement __chkstk for arm64
Lifted from a previously built SDL3.dll
2025-01-02 01:15:28 +01:00

26 lines
688 B
Text

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