André Hentschel : libwine: Implemented the wine_call_on_stack function for ARM64.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 16954b3a821f9585f88ce807a2b15d650ec982e0
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=16954b3a821f9585f88ce807a2...

Author: André Hentschel <nerv(a)dawncrow.de>
Date:   Wed Jan 16 00:41:58 2013 +0100

libwine: Implemented the wine_call_on_stack function for ARM64.

---

 libs/wine/port.c |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)

diff --git a/libs/wine/port.c b/libs/wine/port.c
index 8e8caf8..87e5833 100644
--- a/libs/wine/port.c
+++ b/libs/wine/port.c
@@ -156,6 +156,19 @@ __ASM_GLOBAL_FUNC( wine_call_on_stack,
                    "blx r2\n\t"         /* call func */
                    "mov sp, r4\n\t"     /* restore old sp from local var */
                    "pop {r4,PC}")       /* fetch return address into pc */
+#elif defined(__aarch64__) && defined(__GNUC__)
+__ASM_GLOBAL_FUNC( wine_call_on_stack,
+                   "stp x29, x30, [sp,#-32]!\n\t"    /* save return address on stack */
+                   "str x19, [sp,#16]\n\t"           /* save register on stack */
+                   "mov x19, sp\n\t"                 /* store old sp in local var */
+                   "mov sp, x2\n\t"                  /* stack */
+                   "mov x2, x0\n\t"                  /* func -> scratch register */
+                   "mov x0, x1\n\t"                  /* arg */
+                   "blr x2\n\t"                      /* call func */
+                   "mov sp, x19\n\t"                 /* restore old sp from local var */
+                   "ldr x19, [sp,#16]\n\t"           /* restore register from stack */
+                   "ldp x29, x30, [sp],#32\n\t"      /* restore return address */
+                   "ret")                            /* return */
 #elif defined(__sparc__) && defined(__GNUC__)
 __ASM_GLOBAL_FUNC( wine_call_on_stack,
                    "save %sp, -96, %sp\n\t" /* push: change register window */