1 files changed, 53 insertions, 0 deletions
diff --git a/src/grt/config/chkstk.S b/src/grt/config/chkstk.S
new file mode 100644
index 0000000..ab244d0
--- /dev/null
+++ b/src/grt/config/chkstk.S
@@ -0,0 +1,53 @@
+/*  GRT stack implementation for x86.
+    Copyright (C) 2002 - 2014 Tristan Gingold.
+
+    GHDL is free software; you can redistribute it and/or modify it under
+    the terms of the GNU General Public License as published by the Free
+    Software Foundation; either version 2, or (at your option) any later
+    version.
+
+    GHDL is distributed in the hope that it will be useful, but WITHOUT ANY
+    WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with GCC; see the file COPYING.  If not, write to the Free
+    Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+    02111-1307, USA.
+
+    As a special exception, if other files instantiate generics from this
+    unit, or you link this unit with other files to produce an executable,
+    this unit does not by itself cause the resulting executable to be
+    covered by the GNU General Public License. This exception does not
+    however invalidate any other reasons why the executable file might be
+    covered by the GNU Public License.
+*/
+	.file		"chkstk.S"
+	.version	"01.01"
+	
+	.text
+
+#ifdef __APPLE__
+#define __chkstk ___chkstk
+#endif
+	
+	/* Function called to loop on the process.  */
+	.align 4
+#ifdef __ELF__
+	.type	__chkstk,@function
+#endif
+	.globl __chkstk
+__chkstk:
+	testl	%eax,%eax
+	je	0f
+	subl	$4,%eax		/* 4 bytes already used by call.  */
+	subl	%eax,%esp
+	jmp	*(%esp,%eax)
+0:
+	ret
+#ifdef __ELF__
+	.size	__chkstk, . - __chkstk
+#endif
+
+	.ident	"Written by T.Gingold"