Add missing assembler code for the context library on sparc and sparc64

10 files changed, 496 insertions, 10 deletions

diff --git a/meta-pkgs/boost/Makefile.common b/meta-pkgs/boost/Makefile.common
index 468038a442a..7b47067eef3 100644
--- a/meta-pkgs/boost/Makefile.common
+++ b/meta-pkgs/boost/Makefile.common
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile.common,v 1.37 2012/11/07 21:04:11 adam Exp $
+# $NetBSD: Makefile.common,v 1.38 2013/01/20 09:06:58 martin Exp $
 #
 # used by devel/boost-build/Makefile
 # used by devel/boost-docs/Makefile
@@ -19,6 +19,7 @@ CATEGORIES=		devel
 PKGNAME=	boost-${BOOST_VERSION}
 .else # ${BOOST_PACKAGE} != "meta-pkg"
 PKGNAME=	boost-${BOOST_PACKAGE}-${BOOST_VERSION}
+PKGREVISION=	1
 
 MASTER_SITES=	${MASTER_SITE_SOURCEFORGE:=boost/}
 EXTRACT_SUFX=	.tar.bz2
diff --git a/meta-pkgs/boost/distinfo b/meta-pkgs/boost/distinfo
index 8756d76753c..27a47a3b9b1 100644
--- a/meta-pkgs/boost/distinfo
+++ b/meta-pkgs/boost/distinfo
@@ -1,8 +1,5 @@
-$NetBSD: distinfo,v 1.52 2013/01/17 11:58:50 jperkin Exp $
+$NetBSD: distinfo,v 1.53 2013/01/20 09:06:58 martin Exp $
 
-SHA1 (boost_1_52_0.tar.bz2) = cddd6b4526a09152ddc5db856463eaa1dc29c5d9
-RMD160 (boost_1_52_0.tar.bz2) = 94f72f4553a88495f2052029fb2e90cf8366e75d
-Size (boost_1_52_0.tar.bz2) = 54421709 bytes
 SHA1 (patch-aa) = 408a63a807aaa491130db018cd89bca6a427090d
 SHA1 (patch-ab) = f1c95ae229465a4d2da76ce6ff88d76ace52fdd8
 SHA1 (patch-ac) = 5ecd12564259e4ad9d439990e198b889762ec733
@@ -12,8 +9,15 @@ SHA1 (patch-ag) = c406e9beb9260db7861b13a6eb4c386f23346eb1
 SHA1 (patch-ai) = 231db48819aa563b2082d95bb91d662b5d6cf779
 SHA1 (patch-aq) = e5c7b72ffa2942ce401f3d9bf05498fd761df17a
 SHA1 (patch-ar) = 2fec2c51272cc4ee376e6538d8f1fd8561a7f0a3
+SHA1 (patch-boost_context_detail_fcontext__sparc.hpp) = 1f9cd1292669c13a8560817dec9632f21e6760e3
+SHA1 (patch-boost_context_fcontext.hpp) = 5b7738e335410dfb922c023313c096ae7d454953
 SHA1 (patch-boost_foreach.hpp) = 7cd26c4983873bcac284ad400950e341c559f9a8
 SHA1 (patch-boost_foreach_fwd.hpp) = 5accd68d559213a9677f7d1204e72dd082a42a41
-SHA1 (patch-libs_context_build_Jamfile.v2) = 93cad3cc588c84e333688318df7250d14a3c302e
+SHA1 (patch-libs_context_build_Jamfile.v2) = 649ec4d3c38291d8145a1170e8cb42466fc280dd
+SHA1 (patch-libs_context_build_architecture.jam) = 8daa6ffdd9e4934f9e627a4c777da716443ff31e
+SHA1 (patch-libs_context_config_Jamfile.jam) = c486154e49f80f19030522075596e48d0bab400c
+SHA1 (patch-libs_context_config_sparc.cpp) = 93794017c4dae28c08ab26ef0b1d43ebb7050528
+SHA1 (patch-libs_context_src_asm_jump__sparc__sysv__elf__gas.S) = 80c2dd361328a1cee1b25445da3b791cbef80a01
+SHA1 (patch-libs_context_src_asm_make__sparc__sysv__elf__gas.S) = ba1a878618cdffefde7081f807faeed18b738db6
 SHA1 (patch-libs_filesystem_src_unique_path.cpp) = 3666663305bba85871f2ef291dc117158c678643
 SHA1 (patch-tools_build_v2_engine_hash.c) = a4687fafa1e54a5fea543670c529399c3a09fb80
diff --git a/meta-pkgs/boost/patches/patch-boost_context_detail_fcontext__sparc.hpp b/meta-pkgs/boost/patches/patch-boost_context_detail_fcontext__sparc.hpp
new file mode 100644
index 00000000000..0233e0b34ce
--- /dev/null
+++ b/meta-pkgs/boost/patches/patch-boost_context_detail_fcontext__sparc.hpp
@@ -0,0 +1,97 @@
+$NetBSD: patch-boost_context_detail_fcontext__sparc.hpp,v 1.1 2013/01/20 09:06:59 martin Exp $
+
+# Implementation details for sparc
+
+--- /dev/null	2013-01-19 12:02:03.000000000 +0100
++++ boost/context/detail/fcontext_sparc.hpp	2013-01-19 19:21:19.000000000 +0100
+@@ -0,0 +1,90 @@
++//          Copyright Martin Husemann 2012
++// Distributed under the Boost Software License, Version 1.0.
++//    (See accompanying file LICENSE_1_0.txt or copy at
++//          http://www.boost.org/LICENSE_1_0.txt)
++
++#ifndef BOOST_CTX_DETAIL_FCONTEXT_SPARC_H
++#define BOOST_CTX_DETAIL_FCONTEXT_SPARC_H
++
++#include <cstddef>
++
++#include <boost/config.hpp>
++#include <boost/cstdint.hpp>
++
++#include <boost/context/detail/config.hpp>
++
++#ifdef BOOST_HAS_ABI_HEADERS
++# include BOOST_ABI_PREFIX
++#endif
++
++namespace boost {
++namespace context {
++
++extern "C" {
++
++#define BOOST_CONTEXT_CALLDECL
++
++// if defined(_LP64) we are compiling for sparc64, otherwise it is 32 bit
++// sparc.
++
++
++struct stack_t
++{
++    void    *   sp;
++    std::size_t size;
++
++    stack_t() :
++        sp( 0), size( 0)
++    {}
++};
++
++struct fp_t
++{
++#ifdef _LP64
++    boost::uint64_t     fp_freg[32];
++    boost::uint64_t	fp_fprs, fp_fsr;
++#else
++    boost::uint64_t     fp_freg[16];
++    boost::uint32_t	fp_fsr;
++#endif
++
++    fp_t() :
++        fp_freg(),
++#ifdef _LP64
++	fp_fprs(),
++#endif
++	fp_fsr()
++    {}
++}
++#ifdef _LP64
++		 __attribute__((__aligned__(64)))	// allow VIS instructions to be used
++#endif
++;
++
++struct fcontext_t
++{
++    fp_t                fc_fp;	// fpu stuff first, for easier alignement
++#ifdef _LP64
++    boost::uint64_t
++#else
++    boost::uint32_t
++#endif
++			fc_greg[8];
++    stack_t             fc_stack;
++
++    fcontext_t() :
++        fc_fp(),
++        fc_greg(),
++        fc_stack()
++    {}
++};
++
++}
++
++}}
++
++#ifdef BOOST_HAS_ABI_HEADERS
++# include BOOST_ABI_SUFFIX
++#endif
++
++#endif // BOOST_CTX_DETAIL_FCONTEXT_SPARC_H
diff --git a/meta-pkgs/boost/patches/patch-boost_context_fcontext.hpp b/meta-pkgs/boost/patches/patch-boost_context_fcontext.hpp
new file mode 100644
index 00000000000..ca62d7509c4
--- /dev/null
+++ b/meta-pkgs/boost/patches/patch-boost_context_fcontext.hpp
@@ -0,0 +1,16 @@
+$NetBSD: patch-boost_context_fcontext.hpp,v 1.1 2013/01/20 09:06:59 martin Exp $
+
+# add support for SPARC
+
+--- boost/context/fcontext.hpp.orig	2012-10-31 11:07:06.000000000 +0100
++++ boost/context/fcontext.hpp	2012-10-31 13:31:48.000000000 +0100
+@@ -55,6 +55,9 @@
+     || defined(__ppc__) || defined(_ARCH_PPC) || defined(__POWERPC__) \
+     || defined(__PPCGECKO__) || defined(__PPCBROADWAY) || defined(_XENON)
+ # include <boost/context/detail/fcontext_ppc.hpp>
++#elif defined(__sparc__)
++// sparc or sparc64
++# include <boost/context/detail/fcontext_sparc.hpp>
+ #else
+ # error "platform not supported"
+ #endif
diff --git a/meta-pkgs/boost/patches/patch-libs_context_build_Jamfile.v2 b/meta-pkgs/boost/patches/patch-libs_context_build_Jamfile.v2
index 6498b6cb205..ad6eecdc919 100644
--- a/meta-pkgs/boost/patches/patch-libs_context_build_Jamfile.v2
+++ b/meta-pkgs/boost/patches/patch-libs_context_build_Jamfile.v2
@@ -1,9 +1,9 @@
-$NetBSD: patch-libs_context_build_Jamfile.v2,v 1.1 2012/09/20 12:22:27 jperkin Exp $
+$NetBSD: patch-libs_context_build_Jamfile.v2,v 1.2 2013/01/20 09:06:59 martin Exp $
 
-_XOPEN_SOURCE_EXTENDED conflicts with existing _XOPEN_SOURCE definition.
+# add support for SPARC architecture
 
---- libs/context/build/Jamfile.v2.orig	2012-09-20 10:37:02.244099518 +0000
-+++ libs/context/build/Jamfile.v2	2012-09-20 10:38:31.345922902 +0000
+--- ./libs/context/build/Jamfile.v2.orig	2012-11-24 22:52:40.000000000 +0100
++++ ./libs/context/build/Jamfile.v2	2012-11-25 21:20:20.000000000 +0100
 @@ -17,8 +17,7 @@
  project boost/context
      : source-location ../src
@@ -14,3 +14,20 @@ _XOPEN_SOURCE_EXTENDED conflicts with existing _XOPEN_SOURCE definition.
      : usage-requirements
        <link>shared:<define>BOOST_CONTEXT_DYN_LINK=1
      ;
+@@ -427,6 +426,16 @@
+      <target-os>windows
+    ;
+ 
++# SPARC
++alias asm_context_sources
++   : asm/make_sparc_sysv_elf_gas.S
++     asm/jump_sparc_sysv_elf_gas.S
++   : <abi>sysv
++     <architecture>sparc
++     <binary-format>elf
++     <toolset>gcc
++   ;
++
+ explicit asm_context_sources ;
+ 
+ 
diff --git a/meta-pkgs/boost/patches/patch-libs_context_build_architecture.jam b/meta-pkgs/boost/patches/patch-libs_context_build_architecture.jam
new file mode 100644
index 00000000000..269cc0bc256
--- /dev/null
+++ b/meta-pkgs/boost/patches/patch-libs_context_build_architecture.jam
@@ -0,0 +1,17 @@
+$NetBSD: patch-libs_context_build_architecture.jam,v 1.1 2013/01/20 09:06:59 martin Exp $
+
+# add support for SPARC architecture
+
+--- libs/context/build/architecture.jam.orig	2012-11-04 15:21:27.000000000 +0100
++++ libs/context/build/architecture.jam	2012-11-04 18:53:45.000000000 +0100
+@@ -63,6 +63,10 @@
+         {
+             return <architecture>arm ;
+         }
++        else if [ configure.builds /boost/architecture//sparc : $(properties) : sparc ]
++        {
++            return <architecture>sparc ;
++        }
+         else if [ configure.builds /boost/architecture//mips1 : $(properties) : mips1 ]
+         {
+             return <architecture>mips1 ;
diff --git a/meta-pkgs/boost/patches/patch-libs_context_config_Jamfile.jam b/meta-pkgs/boost/patches/patch-libs_context_config_Jamfile.jam
new file mode 100644
index 00000000000..e330858bb26
--- /dev/null
+++ b/meta-pkgs/boost/patches/patch-libs_context_config_Jamfile.jam
@@ -0,0 +1,11 @@
+$NetBSD: patch-libs_context_config_Jamfile.jam,v 1.1 2013/01/20 09:06:59 martin Exp $
+
+# new build test for SPARC architecture
+
+--- libs/context/config/Jamfile.jam.orig	2012-11-04 18:56:00.000000000 +0100
++++ libs/context/config/Jamfile.jam	2012-11-04 18:56:19.000000000 +0100
+@@ -15,3 +15,4 @@
+ obj x86 : x86.cpp ;
+ obj mips1 : mips1.cpp ;
+ obj arm : arm.cpp ;
++obj sparc : sparc.cpp ;
diff --git a/meta-pkgs/boost/patches/patch-libs_context_config_sparc.cpp b/meta-pkgs/boost/patches/patch-libs_context_config_sparc.cpp
new file mode 100644
index 00000000000..ad08ff8db34
--- /dev/null
+++ b/meta-pkgs/boost/patches/patch-libs_context_config_sparc.cpp
@@ -0,0 +1,14 @@
+--- /dev/null	2012-11-04 15:17:53.000000000 +0100
++++ libs/context/config/sparc.cpp	2012-11-04 18:56:51.000000000 +0100
+@@ -0,0 +1,11 @@
++// power.cpp
++//
++// Copyright (c) 2012 Steven Watanabe
++//
++// Distributed under the Boost Software License Version 1.0. (See
++// accompanying file LICENSE_1_0.txt or copy at
++// http://www.boost.org/LICENSE_1_0.txt)
++
++#if !defined(__sparc)
++#error "Not SPARC"
++#endif
diff --git a/meta-pkgs/boost/patches/patch-libs_context_src_asm_jump__sparc__sysv__elf__gas.S b/meta-pkgs/boost/patches/patch-libs_context_src_asm_jump__sparc__sysv__elf__gas.S
new file mode 100644
index 00000000000..45b435fb916
--- /dev/null
+++ b/meta-pkgs/boost/patches/patch-libs_context_src_asm_jump__sparc__sysv__elf__gas.S
@@ -0,0 +1,194 @@
+$NetBSD: patch-libs_context_src_asm_jump__sparc__sysv__elf__gas.S,v 1.1 2013/01/20 09:06:59 martin Exp $
+
+# Implementation for jump_fcontext for sparc
+
+--- /dev/null	2013-01-19 12:02:03.000000000 +0100
++++ libs/context/src/asm/jump_sparc_sysv_elf_gas.S	2013-01-19 18:41:04.000000000 +0100
+@@ -0,0 +1,187 @@
++/*
++            Copyright Martin Husemann 2013.
++   Distributed under the Boost Software License, Version 1.0.
++      (See accompanying file LICENSE_1_0.txt or copy at
++          http://www.boost.org/LICENSE_1_0.txt)
++*/
++
++/*******************************************************************
++ *                                                                 *
++ *  -------------------------------------------------------------  *
++ *  |  Offset (in 4 or 8 byte units) | Content                  |  *
++ *  -------------------------------------------------------------  *
++ *  | 0                              | %sp                      |  *
++ *  -------------------------------------------------------------  *
++ *  | 1                              | %pc                      |  *
++ *  -------------------------------------------------------------  *
++ *  | 2                              | %i7 (return address)     |  *
++ *  -------------------------------------------------------------  *
++ *  | 3                              | %g1                      |  *
++ *  -------------------------------------------------------------  *
++ *  | 4                              | %g2                      |  *
++ *  -------------------------------------------------------------  *
++ *  | 5                              | %g3                      |  *
++ *  -------------------------------------------------------------  *
++ *  | 6                              | %g6                      |  *
++ *  -------------------------------------------------------------  *
++ *  | 7                              | %g7                      |  *
++ *  -------------------------------------------------------------  *
++ *    The local and in registers are stored on the stack.          *
++ *******************************************************************/
++
++#ifdef _LP64
++#define	ST	stx
++#define	LD	ldx
++#define	OFF(N)	(8*(N))
++#define	CCFSZ	176		// C Compiler Frame Size
++#define	BIAS	(2048-1)	// Stack offset for 64 bit programs
++#define	FC_SZ	448		// sizeof(fcontext_t)
++#define	FC_STK	384		// offsetof(fcontext_t, fc_stack)
++#define	FC_FPU	0		// offsetof(fcontext_t, fc_fp)
++#define	FC_FSR	264		// offsetof(fcontext_t, fc_fp.fp_fsr)
++#define	FC_FPRS	256		// offsetof(fcontext_t, fc_fp.fp_fprs)
++#define	FC_GREG	320		// offsetof(fcontext_t, fc_greg)
++#define	BLOCK_SIZE	64
++#define	FLUSHW	flushw
++
++	.register %g2,#ignore
++	.register %g3,#ignore
++	.register %g6,#ignore
++
++#else
++#define	ST	st
++#define	LD	ld
++#define	OFF(N)	(4*(N))
++#define	CCFSZ	96
++#define	BIAS	0
++#define	FC_SZ	176
++#define	FC_STK	168		// offsetof(fcontext_t, fc_stack)
++#define	FC_FPU	0		// offsetof(fcontext_t, fc_fp)
++#define	FC_FSR	128		// offsetof(fcontext_t, fc_fp.fp_fsr)
++#define	FC_GREG	136		// offsetof(fcontext_t, fc_greg)
++#define	BLOCK_SIZE 8
++#ifdef __NetBSD__
++#define	FLUSHW	t 0x83; nop	// T_FLUSHWIN
++#endif
++#endif
++
++.text
++.globl jump_fcontext
++.align 4
++.type jump_fcontext,@function
++// intptr_t
++// jump_fcontext( fcontext_t * ofc, fcontext_t const* nfc, intptr_t vp,
++//	 bool preserve_fpu = true);
++jump_fcontext:
++    // %o0 = pointer to old fcontext, save current state here
++    // %o1 = new context to jump to
++    // %o2 = new return value in context %o0
++    // %o3 = preserve fpu registers
++    // Save current state in %o0 fcontext, then activate %o1.
++    // If %o3, include fpu registers.
++
++    FLUSHW    // make sure all shadow registers are up to date in the current stack
++
++    // save current state to fcontext_t at %o0
++    ST %sp, [%o0 + FC_GREG + OFF(0)]	// current stack pointer
++    add %o7, 8, %o4			// calculate next instruction past call
++    ST %o4, [%o0 + FC_GREG + OFF(1)]	// and store it as %pc in save context
++    ST %o7, [%o0 + FC_GREG + OFF(2)]
++    ST %g1, [%o0 + FC_GREG + OFF(3)]
++    ST %g2, [%o0 + FC_GREG + OFF(4)]
++    ST %g3, [%o0 + FC_GREG + OFF(5)]
++    ST %g6, [%o0 + FC_GREG + OFF(6)]
++    ST %g7, [%o0 + FC_GREG + OFF(7)]
++
++    // do we need to handle fpu?
++#ifdef _LP64
++    brz %o3, Lno_fpu
++     nop
++#else
++    cmp %o3, 0
++    bz Lno_fpu
++     nop
++#endif
++
++    add %o0, FC_FPU, %o5
++#ifdef _LP64
++    stda %f0, [%o5] 0xf0 /* ASI_BLOCK_PRIMARY */
++    add %o5, BLOCK_SIZE, %o5
++    stda %f16, [%o5] 0xf0
++    add %o5, BLOCK_SIZE, %o5
++    stda %f32, [%o5] 0xf0
++    add %o5, BLOCK_SIZE, %o5
++    stda %f48, [%o5] 0xf0
++    stx %fsr, [%o0+FC_FSR]
++    rd %fprs, %o4
++    stx %o4, [%o0+FC_FPRS]
++#else
++    std %f0, [%o5]
++    std %f2, [%o5+0x08]
++    std %f4, [%o5+0x10]
++    std %f6, [%o5+0x18]
++    std %f8, [%o5+0x20]
++    std %f10, [%o5+0x28]
++    std %f12, [%o5+0x30]
++    std %f14, [%o5+0x38]
++    st %fsr, [%o0+FC_FSR]
++#endif
++
++    add %o1, FC_FPU, %o5
++#ifdef _LP64
++    ldda [%o5] 0xf0 /* ASI_BLOCK_PRIMARY */, %f0
++    add %o5, BLOCK_SIZE, %o5
++    ldda [%o5] 0xf0, %f16
++    add %o5, BLOCK_SIZE, %o5
++    ldda [%o5] 0xf0, %f32
++    add %o5, BLOCK_SIZE, %o5
++    ldda [%o5] 0xf0, %f48
++    ldx [%o1+FC_FSR], %fsr
++    ldx [%o1+FC_FPRS], %o4
++    wr %o4,0,%fprs
++#else
++    ldd [%o5], %f0
++    ldd [%o5+0x08], %f2
++    ldd [%o5+0x10], %f4
++    ldd [%o5+0x18], %f6
++    ldd [%o5+0x20], %f8
++    ldd [%o5+0x28], %f10
++    ldd [%o5+0x30], %f12
++    ldd [%o5+0x38], %f14
++    ld [%o1+FC_FSR], %fsr
++#endif
++
++Lno_fpu:
++    // load new state from %o1
++    LD [%o1 + FC_GREG + OFF(1)], %o4
++    LD [%o1 + FC_GREG + OFF(2)], %o7
++    LD [%o1 + FC_GREG + OFF(3)], %g1
++    LD [%o1 + FC_GREG + OFF(4)], %g2
++    LD [%o1 + FC_GREG + OFF(5)], %g3
++    LD [%o1 + FC_GREG + OFF(6)], %g6
++    LD [%o1 + FC_GREG + OFF(7)], %g7
++    // switch to new stack
++    LD [%o1 + FC_GREG + OFF(0)], %sp
++    // and now reload from this stack the shadow regist bank contents
++    LD [%sp + BIAS + OFF(0)], %l0
++    LD [%sp + BIAS + OFF(1)], %l1
++    LD [%sp + BIAS + OFF(2)], %l2
++    LD [%sp + BIAS + OFF(3)], %l3
++    LD [%sp + BIAS + OFF(4)], %l4
++    LD [%sp + BIAS + OFF(5)], %l5
++    LD [%sp + BIAS + OFF(6)], %l6
++    LD [%sp + BIAS + OFF(7)], %l7
++    LD [%sp + BIAS + OFF(8)], %i0
++    LD [%sp + BIAS + OFF(9)], %i1
++    LD [%sp + BIAS + OFF(10)], %i2
++    LD [%sp + BIAS + OFF(11)], %i3
++    LD [%sp + BIAS + OFF(12)], %i4
++    LD [%sp + BIAS + OFF(13)], %i5
++    LD [%sp + BIAS + OFF(14)], %i6
++    LD [%sp + BIAS + OFF(15)], %i7
++
++    // finally continue execution in new context
++    jmp %o4
++     mov %o2, %o0	// return arg as result
++
++.size jump_fcontext,.-jump_fcontext
diff --git a/meta-pkgs/boost/patches/patch-libs_context_src_asm_make__sparc__sysv__elf__gas.S b/meta-pkgs/boost/patches/patch-libs_context_src_asm_make__sparc__sysv__elf__gas.S
new file mode 100644
index 00000000000..fc93b563e7c
--- /dev/null
+++ b/meta-pkgs/boost/patches/patch-libs_context_src_asm_make__sparc__sysv__elf__gas.S
@@ -0,0 +1,115 @@
+$NetBSD: patch-libs_context_src_asm_make__sparc__sysv__elf__gas.S,v 1.1 2013/01/20 09:06:59 martin Exp $
+
+# Implementation of make_fcontext for sparc
+
+--- /dev/null	2013-01-19 12:02:03.000000000 +0100
++++ libs/context/src/asm/make_sparc_sysv_elf_gas.S	2013-01-19 19:29:27.000000000 +0100
+@@ -0,0 +1,108 @@
++/*
++            Copyright Martin Husemann 2013.
++   Distributed under the Boost Software License, Version 1.0.
++      (See accompanying file LICENSE_1_0.txt or copy at
++          http://www.boost.org/LICENSE_1_0.txt)
++*/
++
++/*******************************************************************
++ *                                                                 *
++ *  -------------------------------------------------------------  *
++ *  |  Offset (in 4 or 8 byte units) | Content                  |  *
++ *  -------------------------------------------------------------  *
++ *  | 0                              | %sp                      |  *
++ *  -------------------------------------------------------------  *
++ *  | 1                              | %pc                      |  *
++ *  -------------------------------------------------------------  *
++ *  | 2                              | %i7 (return address)     |  *
++ *  -------------------------------------------------------------  *
++ *  | 3                              | %g1                      |  *
++ *  -------------------------------------------------------------  *
++ *  | 4                              | %g2                      |  *
++ *  -------------------------------------------------------------  *
++ *  | 5                              | %g3                      |  *
++ *  -------------------------------------------------------------  *
++ *  | 6                              | %g6                      |  *
++ *  -------------------------------------------------------------  *
++ *  | 7                              | %g7                      |  *
++ *  -------------------------------------------------------------  *
++ *    The local and in registers are stored on the stack.          *
++ *******************************************************************/
++
++#ifdef _LP64
++#define	ST	stx
++#define	LD	ldx
++#define	OFF(N)	(8*(N))
++#define	CCFSZ	176		// C Compiler Frame Size
++#define	BIAS	(2048-1)	// Stack offset for 64 bit programs
++#define	FC_SZ	448		// sizeof(fcontext_t)
++#define	FC_STK	384		// offsetof(fcontext_t, fc_stack)
++#define	FC_FPU	0		// offsetof(fcontext_t, fc_fp)
++#define	FC_FSR	264		// offsetof(fcontext_t, fc_fp.fp_fsr)
++#define	FC_FPRS	256		// offsetof(fcontext_t, fc_fp.fp_fprs)
++#define	FC_GREG	320		// offsetof(fcontext_t, fc_greg)
++#define	BLOCK_SIZE	64
++#define	FLUSHW	flushw
++
++	.register %g2,#ignore
++	.register %g3,#ignore
++	.register %g6,#ignore
++
++#else
++#define	ST	st
++#define	LD	ld
++#define	OFF(N)	(4*(N))
++#define	CCFSZ	96
++#define	BIAS	0
++#define	FC_SZ	176
++#define	FC_STK	168		// offsetof(fcontext_t, fc_stack)
++#define	FC_FPU	0		// offsetof(fcontext_t, fc_fp)
++#define	FC_FSR	128		// offsetof(fcontext_t, fc_fp.fp_fsr)
++#define	FC_GREG	136		// offsetof(fcontext_t, fc_greg)
++#define	BLOCK_SIZE 8
++#endif
++
++.text
++.globl make_fcontext
++.align 4
++.type make_fcontext,@function
++// fcontext_t *
++// make_fcontext( void * sp, std::size_t size, void (* fn)( intptr_t) )
++make_fcontext:
++    save %sp, -CCFSZ, %sp
++    // %i0 initial stack pointer
++    // %i1 stack size limit
++    // %i2 function pointer for context start function
++
++    sub %i0, FC_SZ, %i4		// allocate fcontext_t at on the new stack and keep pointer as return value
++    andn %i4, BLOCK_SIZE-1, %i5	// force block ops usable alignement and keep pointer to fcontext in %i5
++
++    ST %i0, [%i5+FC_STK+OFF(0)]	// save fs_stack.sp
++    ST %i1, [%i5+FC_STK+OFF(1)]	// save fs_stack.size
++    sub %i5, CCFSZ+BIAS, %o1   	// leave space for one register window (and offset stack for 64bit)
++    ST %o1, [%i5+FC_GREG+OFF(0)]	// save new stack pointer
++    ST %i2, [%i5+FC_GREG+OFF(1)]	// save new %pc (function pointer)
++    ST %g1, [%i5+FC_GREG+OFF(3)]
++    ST %g2, [%i5+FC_GREG+OFF(4)]
++    ST %g3, [%i5+FC_GREG+OFF(5)]
++    ST %g6, [%i5+FC_GREG+OFF(6)]
++    ST %g7, [%i5+FC_GREG+OFF(7)]
++
++    // synthesize "return address": jump to finish
++#ifdef _LP64
++1:  rd %pc, %i4
++    add %i4, finish-1b-8, %i4
++#else
++    set finish-8, %i4
++#endif
++    ST %i4, [%i5+FC_GREG+OFF(2)]
++
++    ret
++     restore %g0, %i5, %o0	// return fcontext_t
++
++finish:
++    mov %g0, %o0
++    call _exit
++     nop
++
++.size make_fcontext,.-make_fcontext