From: Julian Seward <jseward@acm.org>
Date: Sun, 13 Feb 2005 10:56:22 +0000 (+0000)
Subject: Debugging hacks (switchback routine -- unused)
X-Git-Tag: svn/VALGRIND_3_0_0~1080
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=3e6c170f752cf5e84c861bb700698fcbff0a02f9;p=thirdparty%2Fvalgrind.git

Debugging hacks (switchback routine -- unused)


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@3238
---

diff --git a/coregrind/amd64/dispatch.S b/coregrind/amd64/dispatch.S
index 8c9ad285ce..b8c8bdc3e5 100644
--- a/coregrind/amd64/dispatch.S
+++ b/coregrind/amd64/dispatch.S
@@ -35,6 +35,40 @@
 /*------------------------------------------------------------*/
 /*--- The dispatch loop.                                   ---*/
 /*------------------------------------------------------------*/
+
+.globl switchback
+switchback:
+	/* %rdi -> guest state */
+	/* %rsi is rflags */
+	movq	0(%rdi), %rax
+	movq	8(%rdi), %rcx
+	movq	16(%rdi), %rdx
+	movq	24(%rdi), %rbx
+	movq	32(%rdi), %rsp
+	movq	40(%rdi), %rbp
+	movq	64(%rdi), %r8
+	movq	72(%rdi), %r9
+	movq	80(%rdi), %r10
+	movq	88(%rdi), %r11
+	movq	96(%rdi), %r12
+	movq	104(%rdi), %r13
+	movq	112(%rdi), %r14
+	movq	120(%rdi), %r15
+	/* now we need to deal with rsi rdi rflags rip */
+
+	pushq	168(%rdi) /* %RIP -> stack */
+
+	pushq	%rsi
+	popfq
+
+	movq	48(%rdi), %rsi
+	movq	56(%rdi), %rdi
+
+	ret
+	
+/*------------------------------------------------------------*/
+/*--- The dispatch loop.                                   ---*/
+/*------------------------------------------------------------*/
 	
 .globl VG_(run_innerloop)
 VG_(run_innerloop):