From 64e69d03eec9fc60e0a75d6ef3a9c4cfa3f77d93 Mon Sep 17 00:00:00 2001
From: Michael Shalayeff <mickey@cvs.openbsd.org>
Date: Sun, 1 May 2005 19:29:57 +0000
Subject: since &func is aplt workaround the switch_trampoline and deref plt
 for the func aswell

---
 sys/arch/hppa64/hppa64/locore.S     | 26 +++++++++++++-------------
 sys/arch/hppa64/hppa64/vm_machdep.c |  6 ++++--
 2 files changed, 17 insertions(+), 15 deletions(-)

diff --git a/sys/arch/hppa64/hppa64/locore.S b/sys/arch/hppa64/hppa64/locore.S
index bc10a2f80bd..75cb492b38b 100644
--- a/sys/arch/hppa64/hppa64/locore.S
+++ b/sys/arch/hppa64/hppa64/locore.S
@@ -1,4 +1,4 @@
-/*	$OpenBSD: locore.S,v 1.2 2005/04/21 04:39:35 mickey Exp $	*/
+/*	$OpenBSD: locore.S,v 1.3 2005/05/01 19:29:56 mickey Exp $	*/
 
 /*
  * Copyright (c) 2005 Michael Shalayeff
@@ -1751,11 +1751,18 @@ switch_return
 	ldd,mb	-(HPPA_FRAME_SIZE+20*8)(%sp), %r3
 EXIT(cpu_switch)
 
+	.align	8
+	.export	switch_tramp_p, code
+switch_tramp_p
+	.dword	switch_trampoline
+
 ENTRY(switch_trampoline,0)
+	/* ldd	0x18(%arg3), %r19	but we know we are in kernel! */
+	ldd	0x10(%arg3), %arg3
 	.call
-	blr	%r0, %rp
-	bv,n	%r0(%arg3)
-	nop
+	ble	0(%sr0, %arg3)
+	copy	%r31, %rp
+
 	mfctl	%cr24, %arg1
 	ldd	CI_CURPROC(%arg1), %r1
 	b	$syscall_return
@@ -1766,11 +1773,8 @@ EXIT(switch_trampoline)
  * Signal "trampoline" code. Invoked from RTE setup by sendsig().
  */
 ENTRY(sigcode,0)
-	bb,>=,n	%arg3, 30, sigcode_call
-	dep	%r0, 31, 2, %arg3
-	ldd	4(%arg3), %r19
-	ldd	0(%arg3), %arg3
-sigcode_call
+	ldd	0x18(%arg3), %r19
+	ldd	0x10(%arg3), %arg3
 	.call
 	ble	0(%sr0, %arg3)
 	copy	%r31, %rp
@@ -1786,10 +1790,6 @@ sigcode_call
 	.call
 	ble	4(%sr7, %r1)
 	ldi	SYS_exit, %r1
-
-	.align	256
-/* TODO syscall entry */
-
 ALTENTRY(esigcode)
 EXIT(sigcode)
 
diff --git a/sys/arch/hppa64/hppa64/vm_machdep.c b/sys/arch/hppa64/hppa64/vm_machdep.c
index 53700d03818..5dffbd59b40 100644
--- a/sys/arch/hppa64/hppa64/vm_machdep.c
+++ b/sys/arch/hppa64/hppa64/vm_machdep.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: vm_machdep.c,v 1.1 2005/04/01 10:40:47 mickey Exp $	*/
+/*	$OpenBSD: vm_machdep.c,v 1.2 2005/05/01 19:29:56 mickey Exp $	*/
 
 /*
  * Copyright (c) 2005 Michael Shalayeff
@@ -145,7 +145,9 @@ cpu_fork(p1, p2, stack, stacksize, func, arg)
 	void *arg;
 {
 	extern paddr_t fpu_curpcb;	/* from locore.S */
+	extern register_t switch_tramp_p;
 	extern u_int fpu_enable;
+
 	struct pcb *pcbp;
 	struct trapframe *tf;
 	register_t sp, osp;
@@ -208,7 +210,7 @@ cpu_fork(p1, p2, stack, stacksize, func, arg)
 	 */
 	osp = sp + HPPA_FRAME_SIZE;
 	*(register_t*)(osp - HPPA_FRAME_SIZE) = 0;
-	*(register_t*)(osp + HPPA_FRAME_RP) = (register_t)&switch_trampoline;
+	*(register_t*)(osp + HPPA_FRAME_RP) = switch_tramp_p;
 	*(register_t*)(osp) = (osp - HPPA_FRAME_SIZE);
 
 	sp = osp + HPPA_FRAME_SIZE + 20*8; /* frame + calee-save registers */
-- 
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