e500 port: getcontext / setcontext / swapcontext.

5 files changed, 161 insertions, 0 deletions

diff --git a/ports/ChangeLog.powerpc b/ports/ChangeLog.powerpc
index 375e9566ea..773c2402e3 100644
--- a/ports/ChangeLog.powerpc
+++ b/ports/ChangeLog.powerpc
@@ -1,3 +1,14 @@
+2013-10-04  Joseph Myers  <joseph@codesourcery.com>
+
+	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/context-e500.h:
+	New file.
+	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/getcontext.S:
+	Include <context-e500.h>.
+	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/setcontext.S:
+	Likewise.
+	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/swapcontext.S:
+	Likewise.
+
 2013-08-30   Ondřej Bílka  <neleai@seznam.cz>
 
 	* sysdeps/powerpc/powerpc32/405/memcpy.S: Fix typos.
diff --git a/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/context-e500.h b/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/context-e500.h
new file mode 100644
index 0000000000..9eb1a95615
--- /dev/null
+++ b/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/context-e500.h
@@ -0,0 +1,144 @@
+/* getcontext/setcontext/makecontext support for e500 high parts of registers.
+   Copyright (C) 2006-2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _CONTEXT_E500_H
+#define _CONTEXT_E500_H 1
+
+#if defined __SPE__ || (defined __NO_FPRS__ && !defined _SOFT_FLOAT)
+
+# define __CONTEXT_ENABLE_E500 1
+
+/* We follow the kernel's layout, which saves the high parts of the
+   SPE registers in the vregs area, immediately followed by the ACC
+   value (call-clobbered, not handled here) and the SPEFSCR value.  */
+
+.macro getcontext_e500
+	la	r10,(_UC_VREGS)(r3)
+	evstwwe	r0,(0*4)(r10)
+	evstwwe	r1,(1*4)(r10)
+	evstwwe	r2,(2*4)(r10)
+	evstwwe	r3,(3*4)(r10)
+	evstwwe	r4,(4*4)(r10)
+	evstwwe	r5,(5*4)(r10)
+	evstwwe	r6,(6*4)(r10)
+	evstwwe	r7,(7*4)(r10)
+	evstwwe	r8,(8*4)(r10)
+	evstwwe	r9,(9*4)(r10)
+	evstwwe	r10,(10*4)(r10)
+	evstwwe	r11,(11*4)(r10)
+	evstwwe	r12,(12*4)(r10)
+	evstwwe	r13,(13*4)(r10)
+	evstwwe	r14,(14*4)(r10)
+	evstwwe	r15,(15*4)(r10)
+	evstwwe	r16,(16*4)(r10)
+	evstwwe	r17,(17*4)(r10)
+	evstwwe	r18,(18*4)(r10)
+	evstwwe	r19,(19*4)(r10)
+	evstwwe	r20,(20*4)(r10)
+	evstwwe	r21,(21*4)(r10)
+	evstwwe	r22,(22*4)(r10)
+	evstwwe	r23,(23*4)(r10)
+	evstwwe	r24,(24*4)(r10)
+	evstwwe	r25,(25*4)(r10)
+	evstwwe	r26,(26*4)(r10)
+	evstwwe	r27,(27*4)(r10)
+	evstwwe	r28,(28*4)(r10)
+	evstwwe	r29,(29*4)(r10)
+	evstwwe	r30,(30*4)(r10)
+	evstwwe	r31,(31*4)(r10)
+	mfspefscr	r9
+	stw	r9,(34*4)(r10)
+.endm
+
+.macro setcontext_e500
+	lwz	r3,_UC_VREGS+(0*4)(r31)
+	evmergelo	r0,r3,r0
+	lwz	r3,_UC_VREGS+(1*4)(r31)
+	evmergelo	r1,r3,r1
+	lwz	r3,_UC_VREGS+(2*4)(r31)
+	evmergelo	r2,r3,r2
+	lwz	r3,_UC_VREGS+(1*4)(r31)
+	evmergelo	r1,r3,r1
+	lwz	r3,_UC_VREGS+(2*4)(r31)
+	evmergelo	r2,r3,r2
+	lwz	r3,_UC_VREGS+(3*4)(r31)
+	evmergelo	r3,r3,r3
+	lwz	r3,_UC_VREGS+(4*4)(r31)
+	evmergelo	r4,r3,r4
+	lwz	r3,_UC_VREGS+(5*4)(r31)
+	evmergelo	r5,r3,r5
+	lwz	r3,_UC_VREGS+(6*4)(r31)
+	evmergelo	r6,r3,r6
+	lwz	r3,_UC_VREGS+(7*4)(r31)
+	evmergelo	r7,r3,r7
+	lwz	r3,_UC_VREGS+(8*4)(r31)
+	evmergelo	r8,r3,r8
+	lwz	r3,_UC_VREGS+(9*4)(r31)
+	evmergelo	r9,r3,r9
+	lwz	r3,_UC_VREGS+(10*4)(r31)
+	evmergelo	r10,r3,r10
+	lwz	r3,_UC_VREGS+(11*4)(r31)
+	evmergelo	r11,r3,r11
+	lwz	r3,_UC_VREGS+(12*4)(r31)
+	evmergelo	r12,r3,r12
+	lwz	r3,_UC_VREGS+(13*4)(r31)
+	evmergelo	r13,r3,r13
+	lwz	r3,_UC_VREGS+(14*4)(r31)
+	evmergelo	r14,r3,r14
+	lwz	r3,_UC_VREGS+(15*4)(r31)
+	evmergelo	r15,r3,r15
+	lwz	r3,_UC_VREGS+(16*4)(r31)
+	evmergelo	r16,r3,r16
+	lwz	r3,_UC_VREGS+(17*4)(r31)
+	evmergelo	r17,r3,r17
+	lwz	r3,_UC_VREGS+(18*4)(r31)
+	evmergelo	r18,r3,r18
+	lwz	r3,_UC_VREGS+(19*4)(r31)
+	evmergelo	r19,r3,r19
+	lwz	r3,_UC_VREGS+(20*4)(r31)
+	evmergelo	r20,r3,r20
+	lwz	r3,_UC_VREGS+(21*4)(r31)
+	evmergelo	r21,r3,r21
+	lwz	r3,_UC_VREGS+(22*4)(r31)
+	evmergelo	r22,r3,r22
+	lwz	r3,_UC_VREGS+(23*4)(r31)
+	evmergelo	r23,r3,r23
+	lwz	r3,_UC_VREGS+(24*4)(r31)
+	evmergelo	r24,r3,r24
+	lwz	r3,_UC_VREGS+(25*4)(r31)
+	evmergelo	r25,r3,r25
+	lwz	r3,_UC_VREGS+(26*4)(r31)
+	evmergelo	r26,r3,r26
+	lwz	r3,_UC_VREGS+(27*4)(r31)
+	evmergelo	r27,r3,r27
+	lwz	r3,_UC_VREGS+(28*4)(r31)
+	evmergelo	r28,r3,r28
+	lwz	r3,_UC_VREGS+(29*4)(r31)
+	evmergelo	r29,r3,r29
+	lwz	r3,_UC_VREGS+(30*4)(r31)
+	evmergelo	r30,r3,r30
+	lwz	r3,_UC_VREGS+(31*4)(r31)
+	evmergelo	r31,r3,r31
+	lwz	r3,_UC_VREGS+(34*4)(r31)
+	mtspefscr	r3
+.endm
+#else
+# undef __CONTEXT_ENABLE_E500
+#endif
+
+#endif /* context-e500.h */
diff --git a/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/getcontext.S b/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/getcontext.S
index 90d9dcd429..8bc3c7a43e 100644
--- a/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/getcontext.S
+++ b/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/getcontext.S
@@ -24,6 +24,8 @@
 #include <asm/ptrace.h>
 #include "ucontext_i.h"
 
+#include <context-e500.h>
+
 #define __CONTEXT_FUNC_NAME __getcontext
 #undef __CONTEXT_ENABLE_FPRS
 #undef __CONTEXT_ENABLE_VRS
diff --git a/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/setcontext.S b/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/setcontext.S
index 06061eab9f..5f8653ffbb 100644
--- a/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/setcontext.S
+++ b/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/setcontext.S
@@ -24,6 +24,8 @@
 #include <asm/ptrace.h>
 #include "ucontext_i.h"
 
+#include <context-e500.h>
+
 #define __CONTEXT_FUNC_NAME __setcontext
 #undef __CONTEXT_ENABLE_FPRS
 #undef __CONTEXT_ENABLE_VRS
diff --git a/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/swapcontext.S b/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/swapcontext.S
index 2150eec3c3..de6d56f960 100644
--- a/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/swapcontext.S
+++ b/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/swapcontext.S
@@ -24,6 +24,8 @@
 #include <asm/ptrace.h>
 #include "ucontext_i.h"
 
+#include <context-e500.h>
+
 #define __CONTEXT_FUNC_NAME __swapcontext
 #undef __CONTEXT_ENABLE_FPRS
 #undef __CONTEXT_ENABLE_VRS