X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=bertos%2Fkern%2Fswitch_x86_64.s;fp=bertos%2Fkern%2Fswitch_x86_64.s;h=5fb4da658d1663d461c4fb91218285d212fb82f2;hb=791e167e053bdd9250d34a9a5ccae6ccde4d6679;hp=0000000000000000000000000000000000000000;hpb=faf2f6bfd5933ff75e6cc01e3d48f9277f731d8f;p=bertos.git

diff --git a/bertos/kern/switch_x86_64.s b/bertos/kern/switch_x86_64.s
new file mode 100644
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+++ b/bertos/kern/switch_x86_64.s
@@ -0,0 +1,71 @@
+/*!
+ * \file
+ * <!--
+ * Copyright 2004 Develer S.r.l. (http://www.develer.com/)
+ * Copyright 1999,2000,2001 Bernardo Innocenti <bernie@develer.com>
+ * This file is part of DevLib - See devlib/README for information.
+ * -->
+ *
+ * \brief i386 context switch
+ *
+ * \version $Id$
+ *
+ * \author Bernardo Innocenti <bernie@develer.com>
+ */
+
+/*
+ * $Log$
+ * Revision 1.4  2006/09/20 14:02:49  marco
+ * C-style comment.
+ *
+ * Revision 1.3  2006/02/24 01:35:40  bernie
+ * Update for new emulator.
+ *
+ * Revision 1.2  2006/02/24 01:17:05  bernie
+ * Update for new emulator.
+ *
+ * Revision 1.1  2005/11/27 03:06:15  bernie
+ * Add x86_64 task switching (to be updated to new-style scheduler).
+ *
+ * Revision 1.1  2005/11/14 21:06:38  bernie
+ * Add x86_64 support.
+ *
+ * Revision 1.2  2004/06/06 16:14:12  bernie
+ * Add DevLib license information.
+ *
+ * Revision 1.1  2004/05/23 17:27:00  bernie
+ * Import kern/ subdirectory.
+ *
+ */
+
+/* I know it's ugly... */
+/* .intel_syntax */
+
+/* void AsmSwitchContext(void **new_sp, void **save_sp) */
+/*                       %rdi           %rsi            */
+.globl asm_switch_context
+asm_switch_context:
+	pushq	%rax
+	pushq	%rbx
+	pushq	%rcx
+	pushq	%rdx
+	pushq	%rsi
+	pushq	%rdi
+	pushq	%rbp
+	movq	%rsp,(%rsi)             /* *save_sp = rsp */
+	movq	(%rdi),%rsp             /* rsp = *new_sp */
+	popq	%rbp
+	popq	%rdi
+	popq	%rsi
+	popq	%rdx
+	popq	%rcx
+	popq	%rbx
+	popq	%rax
+	ret
+
+/* int asm_switch_version(void) */
+.globl asm_switch_version
+asm_switch_version:
+	mov	$1,%rax
+	ret
+