From 70cc97c00009f0eed6b2e1b2aa29cd48220fd16e Mon Sep 17 00:00:00 2001
From: Wenlong Zhang <zhangwenlong@loongson.cn>
Date: Thu, 12 Jan 2023 15:12:37 +0800
Subject: [PATCH] update the patch for loongarch fix build error: No best
 alternative for libs/context/build/asm_sources

---
 ...oost-context-support-for-loongarch64.patch | 745 +++++++++++-------
 boost.spec                                    |   6 +-
 2 files changed, 476 insertions(+), 275 deletions(-)

diff --git a/boost-1.78-add-boost-context-support-for-loongarch64.patch b/boost-1.78-add-boost-context-support-for-loongarch64.patch
index bd92493..dbb47b8 100644
--- a/boost-1.78-add-boost-context-support-for-loongarch64.patch
+++ b/boost-1.78-add-boost-context-support-for-loongarch64.patch
@@ -1,100 +1,312 @@
-From 0c117efe905a79d82f5ec638dec6f315d9e3f41c Mon Sep 17 00:00:00 2001
+From 217e51b9101fb4779c8dc00a562f77c0c9a70afe Mon Sep 17 00:00:00 2001
 From: Wenlong Zhang <zhangwenlong@loongson.cn>
-Date: Tue, 10 Jan 2023 20:54:06 +0800
-Subject: [PATCH] add boost context support for loongarch64
+Date: Wed, 11 Jan 2023 17:28:18 +0800
+Subject: [PATCH] add boost context support for loongarch64 new
 
 ---
- boost/predef/other/endian.h                   |   3 +-
- libs/context/build/Jamfile.v2                 |  26 ++++
- .../src/asm/jump_loongarch64_lp64_elf_gas.S   | 117 ++++++++++++++++++
- .../src/asm/make_loongarch64_lp64_elf_gas.S   |  85 +++++++++++++
- .../src/asm/ontop_loongarch64_lp64_elf_gas.S  | 117 ++++++++++++++++++
+ boost/predef/architecture.h                   |   1 +
+ boost/predef/architecture/loongarch.h         |  39 ++++++
+ boost/predef/other/endian.h                   |   1 +
+ boostcpp.jam                                  |   5 +-
+ libs/config/checks/architecture/Jamfile.jam   |   1 +
+ libs/config/checks/architecture/loongarch.cpp |  11 ++
+ libs/context/CMakeLists.txt                   |   4 +-
+ libs/context/build/Jamfile.v2                 |  13 ++
+ libs/context/build/architecture.jam           |   4 +
+ libs/context/doc/architectures.qbk            |   1 +
+ libs/context/doc/context.xml                  |  27 ++++
+ .../doc/html/context/architectures.html       |  27 ++++
+ .../src/asm/jump_loongarch64_sysv_elf_gas.S   | 121 ++++++++++++++++++
+ .../src/asm/make_loongarch64_sysv_elf_gas.S   |  72 +++++++++++
+ .../src/asm/ontop_loongarch64_sysv_elf_gas.S  | 118 +++++++++++++++++
  tools/build/src/engine/jam.h                  |   4 +
- tools/build/src/tools/builtin.py              |   3 +
  .../tools/features/architecture-feature.jam   |   3 +
- 8 files changed, 357 insertions(+), 1 deletion(-)
- create mode 100644 libs/context/src/asm/jump_loongarch64_lp64_elf_gas.S
- create mode 100644 libs/context/src/asm/make_loongarch64_lp64_elf_gas.S
- create mode 100644 libs/context/src/asm/ontop_loongarch64_lp64_elf_gas.S
+ 17 files changed, 448 insertions(+), 4 deletions(-)
+ create mode 100644 boost/predef/architecture/loongarch.h
+ create mode 100644 libs/config/checks/architecture/loongarch.cpp
+ create mode 100644 libs/context/src/asm/jump_loongarch64_sysv_elf_gas.S
+ create mode 100644 libs/context/src/asm/make_loongarch64_sysv_elf_gas.S
+ create mode 100644 libs/context/src/asm/ontop_loongarch64_sysv_elf_gas.S
 
+diff --git a/boost/predef/architecture.h b/boost/predef/architecture.h
+index 471c263..55d036f 100644
+--- a/boost/predef/architecture.h
++++ b/boost/predef/architecture.h
+@@ -17,6 +17,7 @@ http://www.boost.org/LICENSE_1_0.txt)
+ #include <boost/predef/architecture/convex.h>
+ #include <boost/predef/architecture/e2k.h>
+ #include <boost/predef/architecture/ia64.h>
++#include <boost/predef/architecture/loongarch.h>
+ #include <boost/predef/architecture/m68k.h>
+ #include <boost/predef/architecture/mips.h>
+ #include <boost/predef/architecture/parisc.h>
+diff --git a/boost/predef/architecture/loongarch.h b/boost/predef/architecture/loongarch.h
+new file mode 100644
+index 0000000..17015d8
+--- /dev/null
++++ b/boost/predef/architecture/loongarch.h
+@@ -0,0 +1,39 @@
++/*
++Copyright Zhang Na 2022
++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_PREDEF_ARCHITECTURE_LOONGARCH_H
++#define BOOST_PREDEF_ARCHITECTURE_LOONGARCH_H
++
++#include <boost/predef/version_number.h>
++#include <boost/predef/make.h>
++
++/* tag::reference[]
++= `BOOST_ARCH_LOONGARCH`
++[options="header"]
++|===
++| {predef_symbol} | {predef_version}
++| `+__loongarch__+` | {predef_detection}
++|===
++*/ // end::reference[]
++
++#define BOOST_ARCH_LOONGARCH BOOST_VERSION_NUMBER_NOT_AVAILABLE
++
++#if defined(__loongarch__)
++#   undef BOOST_ARCH_LOONGARCH
++#   define BOOST_ARCH_LOONGARCH BOOST_VERSION_NUMBER_AVAILABLE
++#endif
++
++#if BOOST_ARCH_LOONGARCH
++#   define BOOST_ARCH_LOONGARCH_AVAILABLE
++#endif
++
++#define BOOST_ARCH_LOONGARCH_NAME "LoongArch"
++
++#endif
++
++#include <boost/predef/detail/test.h>
++BOOST_PREDEF_DECLARE_TEST(BOOST_ARCH_LOONGARCH,BOOST_ARCH_LOONGARCH_NAME)
 diff --git a/boost/predef/other/endian.h b/boost/predef/other/endian.h
-index d8ec63ff5..4d0630af0 100644
+index d8ec63f..b712673 100644
 --- a/boost/predef/other/endian.h
 +++ b/boost/predef/other/endian.h
-@@ -125,7 +125,8 @@ information and acquired knowledge:
+@@ -121,6 +121,7 @@ information and acquired knowledge:
+         defined(__ARMEL__) || \
+         defined(__THUMBEL__) || \
+         defined(__AARCH64EL__) || \
++	defined(__loongarch__) || \
+         defined(_MIPSEL) || \
          defined(__MIPSEL) || \
          defined(__MIPSEL__) || \
-         defined(__riscv) || \
--        defined(__e2k__)
-+        defined(__e2k__) || \
-+        defined(__loongarch64)
- #       undef BOOST_ENDIAN_LITTLE_BYTE
- #       define BOOST_ENDIAN_LITTLE_BYTE BOOST_VERSION_NUMBER_AVAILABLE
- #   endif
-diff --git a/libs/context/build/Jamfile.v2 b/libs/context/build/Jamfile.v2
-index 30e959839..68e6981a7 100644
---- a/libs/context/build/Jamfile.v2
-+++ b/libs/context/build/Jamfile.v2
-@@ -83,6 +83,7 @@ local rule default_abi ( )
-     else if [ os.platform ] = "SW_64" { tmp = aapcs ; }
-     else if [ os.platform ] = "MIPS32" { tmp = o32 ; }
-     else if [ os.platform ] = "MIPS64" { tmp = n64 ; }
-+    else if [ os.platform ] = "LOONGARCH64" { tmp = lp64 ; }
-     return $(tmp) ;
+diff --git a/boostcpp.jam b/boostcpp.jam
+index f60e85c..c938b72 100644
+--- a/boostcpp.jam
++++ b/boostcpp.jam
+@@ -634,7 +634,7 @@ rule address-model ( )
+     return <conditional>@boostcpp.deduce-address-model ;
  }
  
-@@ -92,6 +93,7 @@ feature.feature abi
-      ms
-      n32
-      n64
-+     lp64
-      o32
-      o64
-      sysv
-@@ -207,6 +209,30 @@ alias asm_sources
-      <toolset>gcc
+-local deducable-architectures = sw_64 arm mips1 power riscv s390x sparc x86 combined ;
++local deducable-architectures = sw_64 arm loongarch mips1 power riscv s390x sparc x86 combined ;
+ feature.feature deduced-architecture : $(deducable-architectures) : propagated optional composite hidden ;
+ for a in $(deducable-architectures)
+ {
+@@ -645,10 +645,11 @@ rule deduce-architecture ( properties * )
+ {
+     local result ;
+     local filtered = [ toolset-properties $(properties) ] ;
+-    local names = arm sw_64 mips1 power riscv s390x sparc x86 combined ;
++    local names = arm sw_64 loongarch mips1 power riscv s390x sparc x86 combined ;
+     local idx = [ configure.find-builds "default architecture" : $(filtered)
+         : /boost/architecture//arm
+         : /boost/architecture//sw_64
++        : /boost/architecture//loongarch
+         : /boost/architecture//mips1
+         : /boost/architecture//power
+         : /boost/architecture//riscv
+diff --git a/libs/config/checks/architecture/Jamfile.jam b/libs/config/checks/architecture/Jamfile.jam
+index f86c732..ee260ff 100644
+--- a/libs/config/checks/architecture/Jamfile.jam
++++ b/libs/config/checks/architecture/Jamfile.jam
+@@ -19,6 +19,7 @@ obj 64 : 64.cpp ;
+ obj arm      : arm.cpp ;
+ obj sw_64    : sw_64.cpp ;
+ obj combined : combined.cpp ;
++obj loongarch : loongarch.cpp ;
+ obj mips1    : mips1.cpp ;
+ obj power    : power.cpp ;
+ obj riscv    : riscv.cpp ;
+diff --git a/libs/config/checks/architecture/loongarch.cpp b/libs/config/checks/architecture/loongarch.cpp
+new file mode 100644
+index 0000000..5be8cb0
+--- /dev/null
++++ b/libs/config/checks/architecture/loongarch.cpp
+@@ -0,0 +1,11 @@
++// loongarch.cpp
++//
++// Copyright (c) 2012 Steven Watanabe
++//
++// Distributed under the Boost Software License Version 1.0. (See
++// accompanying file LICENSE_1_0.txt or copy at
++// http://www.boost.org/LICENSE_1_0.txt)
++
++#if !defined(__loongarch__)
++#error "Not LoongArch"
++#endif
+diff --git a/libs/context/CMakeLists.txt b/libs/context/CMakeLists.txt
+index 99c11b2..f301143 100644
+--- a/libs/context/CMakeLists.txt
++++ b/libs/context/CMakeLists.txt
+@@ -48,7 +48,7 @@ unset(_default_abi)
+ 
+ ## Arch-and-model
+ 
+-set(_all_archs arm arm64 sw_64 mips32 mips64 ppc32 ppc64 riscv64 s390x i386 x86_64 combined)
++set(_all_archs arm arm64 loongarch64 sw_64 mips32 mips64 ppc32 ppc64 riscv64 s390x i386 x86_64 combined)
+ 
+ # Try at start to auto determine arch from CMake.
+ if(CMAKE_SYSTEM_PROCESSOR IN_LIST _all_archs)
+@@ -74,7 +74,7 @@ else()
+   endif()
+ endif()
+ 
+-set(BOOST_CONTEXT_ARCHITECTURE "${_default_arch}" CACHE STRING "Boost.Context architecture (arm, arm64, mips32, sw_64,  mips64, ppc32, ppc64, riscv64, s390x, i386, x86_64, combined)")
++set(BOOST_CONTEXT_ARCHITECTURE "${_default_arch}" CACHE STRING "Boost.Context architecture (arm, arm64, loongarch64, mips32, sw_64,  mips64, ppc32, ppc64, riscv64, s390x, i386, x86_64, combined)")
+ set_property(CACHE BOOST_CONTEXT_ARCHITECTURE PROPERTY STRINGS ${_all_archs})
+ 
+ unset(_all_archs)
+diff --git a/libs/context/build/Jamfile.v2 b/libs/context/build/Jamfile.v2
+index 30e9598..6238510 100644
+--- a/libs/context/build/Jamfile.v2
++++ b/libs/context/build/Jamfile.v2
+@@ -254,6 +254,19 @@ alias asm_sources
+      <toolset>darwin
     ;
  
-+# LOONGARCH
-+# LOONGARCH64/LP64/ELF
++# LOONGARCH64
++# LOONGARCH64/SYSV/ELF
 +alias asm_sources
-+   : asm/make_loongarch64_lp64_elf_gas.S
-+     asm/jump_loongarch64_lp64_elf_gas.S
-+     asm/ontop_loongarch64_lp64_elf_gas.S
-+   : <abi>lp64
++   : asm/make_loongarch64_sysv_elf_gas.S
++     asm/jump_loongarch64_sysv_elf_gas.S
++     asm/ontop_loongarch64_sysv_elf_gas.S
++   : <abi>sysv
 +     <address-model>64
-+     <architecture>loongarch64
-+     <binary-format>elf
-+     <toolset>clang
-+   ;
-+
-+alias asm_sources
-+   : asm/make_loongarch64_lp64_elf_gas.S
-+     asm/jump_loongarch64_lp64_elf_gas.S
-+     asm/ontop_loongarch64_lp64_elf_gas.S
-+   : <abi>lp64
-+     <address-model>64
-+     <architecture>loongarch64
++     <architecture>loongarch
 +     <binary-format>elf
 +     <toolset>gcc
 +   ;
 +
- # ARM64
- # ARM64/AAPCS/ELF
+ # MIPS
+ # MIPS32/O32/ELF
  alias asm_sources
-diff --git a/libs/context/src/asm/jump_loongarch64_lp64_elf_gas.S b/libs/context/src/asm/jump_loongarch64_lp64_elf_gas.S
+diff --git a/libs/context/build/architecture.jam b/libs/context/build/architecture.jam
+index 4c7d211..78820cd 100644
+--- a/libs/context/build/architecture.jam
++++ b/libs/context/build/architecture.jam
+@@ -59,6 +59,10 @@ rule deduce-architecture ( properties * )
+         {
+             return <architecture>sw_64 ;
+         }
++        else if [ configure.builds /boost/architecture//loongarch : $(properties) : loongarch ]
++        {
++            return <architecture>loongarch ;
++        }
+         else if [ configure.builds /boost/architecture//mips : $(properties) : mips ]
+         {
+             return <architecture>mips ;
+diff --git a/libs/context/doc/architectures.qbk b/libs/context/doc/architectures.qbk
+index 4be823c..76d6d58 100644
+--- a/libs/context/doc/architectures.qbk
++++ b/libs/context/doc/architectures.qbk
+@@ -15,6 +15,7 @@ architectures:
+     [[arm (aarch32)] [AAPCS|ELF]      [AAPCS|PE] [-]            [AAPCS|MACH-O]]
+     [[arm (aarch64)] [AAPCS|ELF]      [-]        [AAPCS|MACH-O] [AAPCS|MACH-O]]
+     [[i386]          [SYSV|ELF]       [MS|PE]    [SYSV|MACH-O]  [-]]
++    [[loongarch64]   [SYSV|ELF]       [-]        [-]            [-]]
+     [[mips]          [O32|N64|ELF]    [-]        [-]            [-]]
+     [[ppc32]         [SYSV|ELF|XCOFF] [-]        [SYSV|MACH-O]  [-]]
+     [[ppc64]         [SYSV|ELF|XCOFF] [-]        [SYSV|MACH-O]  [-]]
+diff --git a/libs/context/doc/context.xml b/libs/context/doc/context.xml
+index d83439d..ef920cd 100644
+--- a/libs/context/doc/context.xml
++++ b/libs/context/doc/context.xml
+@@ -3379,6 +3379,33 @@
+               </para>
+             </entry>
+           </row>
++          <row>
++            <entry>
++              <para>
++                loongarch64
++              </para>
++            </entry>
++            <entry>
++              <para>
++                SYSV|ELF
++              </para>
++            </entry>
++            <entry>
++              <para>
++                -
++              </para>
++            </entry>
++            <entry>
++              <para>
++                -
++              </para>
++            </entry>
++            <entry>
++              <para>
++                -
++              </para>
++            </entry>
++          </row>
+           <row>
+             <entry>
+               <para>
+diff --git a/libs/context/doc/html/context/architectures.html b/libs/context/doc/html/context/architectures.html
+index 416627d..29bd803 100644
+--- a/libs/context/doc/html/context/architectures.html
++++ b/libs/context/doc/html/context/architectures.html
+@@ -151,6 +151,33 @@
+             </td>
+ </tr>
+ <tr>
++<td>
++              <p>
++                loongarch64
++              </p>
++            </td>
++<td>
++              <p>
++                SYSV|ELF
++              </p>
++            </td>
++<td>
++              <p>
++                -
++              </p>
++            </td>
++<td>
++              <p>
++                -
++              </p>
++            </td>
++<td>
++              <p>
++                -
++              </p>
++            </td>
++</tr>
++<tr>
+ <td>
+               <p>
+                 mips
+diff --git a/libs/context/src/asm/jump_loongarch64_sysv_elf_gas.S b/libs/context/src/asm/jump_loongarch64_sysv_elf_gas.S
 new file mode 100644
-index 000000000..a95a9eeb9
+index 0000000..74c081e
 --- /dev/null
-+++ b/libs/context/src/asm/jump_loongarch64_lp64_elf_gas.S
-@@ -0,0 +1,117 @@
-+/*
-+            Copyright loongson 2018.
-+   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)
-+*/
-+
++++ b/libs/context/src/asm/jump_loongarch64_sysv_elf_gas.S
+@@ -0,0 +1,121 @@
 +/*******************************************************
 + *                                                     *
 + *  -------------------------------------------------  *
@@ -102,14 +314,14 @@ index 000000000..a95a9eeb9
 + *  -------------------------------------------------  *
 + *  |     0     |     8     |    16     |     24    |  *
 + *  -------------------------------------------------  *
-+ *  |    F24    |    F25    |    F26    |    F27    |  *
++ *  |    FS0    |    FS1    |    FS2    |    FS3    |  *
 + *  -------------------------------------------------  *
 + *  -------------------------------------------------  *
 + *  |  8  |  9  |  10 |  11 |  12 |  13 |  14 |  15 |  *
 + *  -------------------------------------------------  *
 + *  |     32    |    40     |     48    |     56    |  *
 + *  -------------------------------------------------  *
-+ *  |    F28    |    F29    |    F30    |    F31    |  *
++ *  |    FS4    |    FS5    |    FS6    |    FS7    |  *
 + *  -------------------------------------------------  *
 + *  -------------------------------------------------  *
 + *  |  16 |  17 |  18 |  19 |  20 |  21 |  22 |  23 |  *
@@ -130,94 +342,98 @@ index 000000000..a95a9eeb9
 + *  -------------------------------------------------  *
 + *  | 128 | 132 | 136 | 140 | 144 | 148 | 152 | 156 |  *
 + *  -------------------------------------------------  *
-+ *  |    FP     |    GP     |     RA    |     PC    |  *
++ *  |    S8     |    FP     |     RA    |     PC    |  *
 + *  -------------------------------------------------  *
 + *                                                     *
 + * *****************************************************/
 +
-+.file "jump_loongarch64_lp64_elf_gas.S"
++.file "jump_loongarch64_sysv_elf_gas.S"
 +.text
 +.globl jump_fcontext
-+.align 3
++.align 2
 +.type jump_fcontext,@function
 +jump_fcontext:
-+	# reserve space on stack
-+	addi.d	$sp, $sp, -160
-+	
-+	st.d	$s0, $sp, 64	# save S0
-+	st.d	$s1, $sp, 72	# save S1
-+	st.d	$s2, $sp, 80	# save S2
-+	st.d	$s3, $sp, 88	# save S3
-+	st.d	$s4, $sp, 96	# save S4
-+	st.d	$s5, $sp, 104	# save S5
-+	st.d	$s6, $sp, 112	# save S6
-+	st.d	$s7, $sp, 120	# save S7
-+	st.d	$s8, $sp, 128	# save S8
-+	st.d	$fp, $sp, 136	# save FP
-+	st.d	$ra, $sp, 144	# save RA
-+	st.d	$ra, $sp, 152	# save RA as PC
-+	
-+	
-+	fst.d	$fs0, $sp, 0	# save F24
-+	fst.d	$fs1, $sp, 8	# save F25
-+	fst.d	$fs2, $sp, 16	# save F26
-+	fst.d	$fs3, $sp, 24	# save F27
-+	fst.d	$fs4, $sp, 32	# save F28
-+	fst.d	$fs5, $sp, 40	# save F29
-+	fst.d	$fs6, $sp, 48	# save F30
-+	fst.d	$fs7, $sp, 56	# save F31
-+	
-+	# swap a0(new stack), sp(old stack)
-+	xor	$a0, $a0, $sp
-+	xor	$sp, $a0, $sp
-+	xor	$a0, $a0, $sp
-+	
-+	fld.d	$fs0, $sp, 0	# restore F24
-+	fld.d	$fs1, $sp, 8	# restore F25
-+	fld.d	$fs2, $sp, 16	# restore F26
-+	fld.d	$fs3, $sp, 24	# restore F27
-+	fld.d	$fs4, $sp, 32	# restore F28
-+	fld.d	$fs5, $sp, 40	# restore F29
-+	fld.d	$fs6, $sp, 48	# restore F30
-+	fld.d	$fs7, $sp, 56	# restore F31
-+	
-+	ld.d	$s0, $sp, 64	# restore S0
-+	ld.d	$s1, $sp, 72	# restore S1
-+	ld.d	$s2, $sp, 80	# restore S2
-+	ld.d	$s3, $sp, 88	# restore S3
-+	ld.d	$s4, $sp, 96	# restore S4
-+	ld.d	$s5, $sp, 104	# restore S5
-+	ld.d	$s6, $sp, 112	# restore S6
-+	ld.d	$s7, $sp, 120	# restore S7
-+	ld.d	$s8, $sp, 128	# restore S8
-+	ld.d	$fp, $sp, 136	# restore FP
-+	ld.d	$ra, $sp, 144	# restore RA
-+	
-+	# load PC
-+	ld.d	$t8, $sp, 152
-+	
-+	# adjust stack
-+	addi.d	$sp, $sp, 160
-+	
-+	# jump to context
-+	jr	$t8
++    # reserve space on stack
++    addi.d  $sp, $sp, -160
++
++    # save fs0 - fs7
++    fst.d  $fs0, $sp, 0
++    fst.d  $fs1, $sp, 8
++    fst.d  $fs2, $sp, 16
++    fst.d  $fs3, $sp, 24
++    fst.d  $fs4, $sp, 32
++    fst.d  $fs5, $sp, 40
++    fst.d  $fs6, $sp, 48
++    fst.d  $fs7, $sp, 56
++
++    # save s0 - s8, fp, ra
++    st.d  $s0, $sp, 64
++    st.d  $s1, $sp, 72
++    st.d  $s2, $sp, 80
++    st.d  $s3, $sp, 88
++    st.d  $s4, $sp, 96
++    st.d  $s5, $sp, 104
++    st.d  $s6, $sp, 112
++    st.d  $s7, $sp, 120
++    st.d  $s8, $sp, 128
++    st.d  $fp, $sp, 136
++    st.d  $ra, $sp, 144
++
++    # save RA as PC
++    st.d  $ra, $sp, 152
++
++    # store SP (pointing to context-data) in A2
++    move  $a2, $sp
++
++    # restore SP (pointing to context-data) from A0
++    move  $sp, $a0
++
++    # load fs0 - fs7
++    fld.d  $fs0, $sp, 0
++    fld.d  $fs1, $sp, 8
++    fld.d  $fs2, $sp, 16
++    fld.d  $fs3, $sp, 24
++    fld.d  $fs4, $sp, 32
++    fld.d  $fs5, $sp, 40
++    fld.d  $fs6, $sp, 48
++    fld.d  $fs7, $sp, 56
++
++    #load s0 - s7
++    ld.d  $s0, $sp, 64
++    ld.d  $s1, $sp, 72
++    ld.d  $s2, $sp, 80
++    ld.d  $s3, $sp, 88
++    ld.d  $s4, $sp, 96
++    ld.d  $s5, $sp, 104
++    ld.d  $s6, $sp, 112
++    ld.d  $s7, $sp, 120
++    ld.d  $s8, $sp, 128
++    ld.d  $fp, $sp, 136
++    ld.d  $ra, $sp, 144
++
++    # return transfer_t from jump
++    # pass transfer_t as first arg in context function
++    # a0 == FCTX, a1 == DATA
++    move  $a0, $a2
++
++    # load PC
++    ld.d  $a2, $sp, 152
++
++    # restore stack
++    addi.d  $sp, $sp, 160
++
++    # jump to context
++    jr  $a2
 +.size jump_fcontext, .-jump_fcontext
 +
 +/* Mark that we don't need executable stack.  */
 +.section .note.GNU-stack,"",%progbits
-diff --git a/libs/context/src/asm/make_loongarch64_lp64_elf_gas.S b/libs/context/src/asm/make_loongarch64_lp64_elf_gas.S
+diff --git a/libs/context/src/asm/make_loongarch64_sysv_elf_gas.S b/libs/context/src/asm/make_loongarch64_sysv_elf_gas.S
 new file mode 100644
-index 000000000..20106bee4
+index 0000000..5506270
 --- /dev/null
-+++ b/libs/context/src/asm/make_loongarch64_lp64_elf_gas.S
-@@ -0,0 +1,85 @@
-+/*
-+            Copyright loongson 2018.
-+   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)
-+*/
-+
++++ b/libs/context/src/asm/make_loongarch64_sysv_elf_gas.S
+@@ -0,0 +1,72 @@
 +/*******************************************************
 + *                                                     *
 + *  -------------------------------------------------  *
@@ -225,14 +441,14 @@ index 000000000..20106bee4
 + *  -------------------------------------------------  *
 + *  |     0     |     8     |    16     |     24    |  *
 + *  -------------------------------------------------  *
-+ *  |    F24    |    F25    |    F26    |    F27    |  *
++ *  |    FS0    |    FS1    |    FS2    |    FS3    |  *
 + *  -------------------------------------------------  *
 + *  -------------------------------------------------  *
 + *  |  8  |  9  |  10 |  11 |  12 |  13 |  14 |  15 |  *
 + *  -------------------------------------------------  *
 + *  |     32    |    40     |     48    |     56    |  *
 + *  -------------------------------------------------  *
-+ *  |    F28    |    F29    |    F30    |    F31    |  *
++ *  |    FS4    |    FS5    |    FS6    |    FS7    |  *
 + *  -------------------------------------------------  *
 + *  -------------------------------------------------  *
 + *  |  16 |  17 |  18 |  19 |  20 |  21 |  22 |  23 |  *
@@ -253,62 +469,49 @@ index 000000000..20106bee4
 + *  -------------------------------------------------  *
 + *  | 128 | 132 | 136 | 140 | 144 | 148 | 152 | 156 |  *
 + *  -------------------------------------------------  *
-+ *  |    FP     |    GP     |     RA    |     PC    |  *
++ *  |    S8     |    FP     |     RA    |     PC    |  *
 + *  -------------------------------------------------  *
 + *                                                     *
 + * *****************************************************/
 +
-+.file "make_loongarch64_lp64_elf_gas.S"
++.file "make_loongarch64_sysv_elf_gas.S"
 +.text
 +.globl make_fcontext
-+.align 3
++.align 2
 +.type make_fcontext,@function
 +make_fcontext:
-+	# shift address in A0 to lower 16 byte boundary
-+	li.w	$t0, 0xfffffffffffffff0
-+	and	$a0, $a0, $t0
-+	
-+	# reserve space for context-data on context-stack
-+	addi.d	$a0, $a0, -160
-+	
-+	# third arg of make_fcontext() == address of context-function
-+	st.d	$a2, $a0, 152
-+	
-+	# save address of finish as return-address for context-function
-+	# will be entered after context-function returns
-+	la.local	$t8, finish	
-+	st.d	$t8, $a0, 144
++    # shift address in A0 to lower 16 byte boundary
++    bstrins.d $a0, $zero, 3, 0
 +
-+	# return pointer to context-data
-+	jr	$ra 
++    # reserve space for context-data on context-stack
++    addi.d  $a0, $a0, -160
++
++    # third arg of make_fcontext() == address of context-function
++    st.d  $a2, $a0, 152
++
++    # save address of finish as return-address for context-function
++    # will be entered after context-function returns
++    la.local  $a4, finish
++    st.d  $a4, $a0, 144
++
++    # return pointer to context-data
++    jr  $ra
 +
 +finish:
-+	# reload our gp register (needed for la)
-+	addi.d	$t0, $sp, -160
-+	
-+	# call _exit(0)
-+	#  the previous function should have left the 16 bytes incoming argument
-+	#  area on the stack which we reuse for calling _exit
-+	la.global	$t8, _exit
-+	move	$a0, $zero
-+	jr	$t8
-+.size make_fcontext, .-make_fcontext
++    # exit code is zero
++    li.d  $a0, 0
++    # call _exit(0)
++    b  %plt(_exit)
 +
++.size make_fcontext, .-make_fcontext
 +/* Mark that we don't need executable stack.  */
 +.section .note.GNU-stack,"",%progbits
-diff --git a/libs/context/src/asm/ontop_loongarch64_lp64_elf_gas.S b/libs/context/src/asm/ontop_loongarch64_lp64_elf_gas.S
+diff --git a/libs/context/src/asm/ontop_loongarch64_sysv_elf_gas.S b/libs/context/src/asm/ontop_loongarch64_sysv_elf_gas.S
 new file mode 100644
-index 000000000..3f976fcfe
+index 0000000..c6ea044
 --- /dev/null
-+++ b/libs/context/src/asm/ontop_loongarch64_lp64_elf_gas.S
-@@ -0,0 +1,117 @@
-+/*
-+            Copyright loongson 2018.
-+   Distributed under the Boost Software License, Version 1.0.
-+      (See accompanying file LICENSE_1_0.txt or copy at
-+          http://www.boost.org/LICENSE
-+*/
-+
++++ b/libs/context/src/asm/ontop_loongarch64_sysv_elf_gas.S
+@@ -0,0 +1,118 @@
 +/*******************************************************
 + *                                                     *
 + *  -------------------------------------------------  *
@@ -316,14 +519,14 @@ index 000000000..3f976fcfe
 + *  -------------------------------------------------  *
 + *  |     0     |     8     |    16     |     24    |  *
 + *  -------------------------------------------------  *
-+ *  |    F24    |    F25    |    F26    |    F27    |  *
++ *  |    FS0    |    FS1    |    FS2    |    FS3    |  *
 + *  -------------------------------------------------  *
 + *  -------------------------------------------------  *
 + *  |  8  |  9  |  10 |  11 |  12 |  13 |  14 |  15 |  *
 + *  -------------------------------------------------  *
 + *  |     32    |    40     |     48    |     56    |  *
 + *  -------------------------------------------------  *
-+ *  |    F28    |    F29    |    F30    |    F31    |  *
++ *  |    FS4    |    FS5    |    FS6    |    FS7    |  *
 + *  -------------------------------------------------  *
 + *  -------------------------------------------------  *
 + *  |  16 |  17 |  18 |  19 |  20 |  21 |  22 |  23 |  *
@@ -344,83 +547,91 @@ index 000000000..3f976fcfe
 + *  -------------------------------------------------  *
 + *  | 128 | 132 | 136 | 140 | 144 | 148 | 152 | 156 |  *
 + *  -------------------------------------------------  *
-+ *  |    FP     |    GP     |     RA    |     PC    |  *
++ *  |    S8     |    FP     |     RA    |     PC    |  *
 + *  -------------------------------------------------  *
 + *                                                     *
 + * *****************************************************/
 +
-+.file "ontop_loongarch64_lp64_elf_gas.S"
++.file "ontop_loongarch64_sysv_elf_gas.S"
 +.text
 +.globl ontop_fcontext
-+.align 3
++.align 2
 +.type ontop_fcontext,@function
 +ontop_fcontext:
-+	# reserve space on stack
-+	addi.d	$sp, $sp, -160
-+	
-+	st.d	$s0, $sp, 64	# save S0
-+	st.d	$s1, $sp, 72	# save S1
-+	st.d	$s2, $sp, 80	# save S2
-+	st.d	$s3, $sp, 88	# save S3
-+	st.d	$s4, $sp, 96	# save S4
-+	st.d	$s5, $sp, 104	# save S5
-+	st.d	$s6, $sp, 112	# save S6
-+	st.d	$s7, $sp, 120	# save S7
-+	st.d	$s8, $sp, 128	# save S8
-+	st.d	$fp, $sp, 136	# save FP
-+	st.d	$ra, $sp, 144	# save RA
-+	st.d	$ra, $sp, 152	# save RA as PC
-+	
-+	
-+	fst.d	$fs0, $sp, 0		# save F24
-+	fst.d	$fs1, $sp, 8		# save F25
-+	fst.d	$fs2, $sp, 16	# save F26
-+	fst.d	$fs3, $sp, 24	# save F27
-+	fst.d	$fs4, $sp, 32	# save F28
-+	fst.d	$fs5, $sp, 40	# save F29
-+	fst.d	$fs6, $sp, 48	# save F30
-+	fst.d	$fs7, $sp, 56	# save F31
-+	
-+	# swap a0,sp
-+	xor	$a0, $a0, $sp
-+	xor	$sp, $a0, $sp
-+	xor	$a0, $a0, $sp
-+	
-+	fld.d	$fs0, $sp, 0	# restore F24
-+	fld.d	$fs1, $sp, 8	# restore F25
-+	fld.d	$fs2, $sp, 16	# restore F26
-+	fld.d	$fs3, $sp, 24	# restore F27
-+	fld.d	$fs4, $sp, 32	# restore F28
-+	fld.d	$fs5, $sp, 40	# restore F29
-+	fld.d	$fs6, $sp, 48	# restore F30
-+	fld.d	$fs7, $sp, 56	# restore F31
-+	
-+	ld.d	$s0, $sp, 64	# restore S0
-+	ld.d	$s1, $sp, 72	# restore S1
-+	ld.d	$s2, $sp, 80	# restore S2
-+	ld.d	$s3, $sp, 88	# restore S3
-+	ld.d	$s4, $sp, 96	# restore S4
-+	ld.d	$s5, $sp, 104	# restore S5
-+	ld.d	$s6, $sp, 112	# restore S6
-+	ld.d	$s7, $sp, 120	# restore S7
-+	ld.d	$s8, $sp, 128	# restore S8
-+	ld.d	$fp, $sp, 136	# restore FP
-+	ld.d	$ra, $sp, 144	# restore RA
-+	
-+	# load PC
-+	move	$t8, $a2
-+	
-+	# adjust stack
-+	addi.d	$sp, $sp, 160
-+	
-+	# jump to context
-+	jr	$t8
++    # reserve space on stack
++    addi.d  $sp, $sp, -160
++
++    # save fs0 - fs7
++    fst.d  $fs0, $sp, 0
++    fst.d  $fs1, $sp, 8
++    fst.d  $fs2, $sp, 16
++    fst.d  $fs3, $sp, 24
++    fst.d  $fs4, $sp, 32
++    fst.d  $fs5, $sp, 40
++    fst.d  $fs6, $sp, 48
++    fst.d  $fs7, $sp, 56
++
++    # save s0 - s8, fp, ra
++    st.d  $s0, $sp, 64
++    st.d  $s1, $sp, 72
++    st.d  $s2, $sp, 80
++    st.d  $s3, $sp, 88
++    st.d  $s4, $sp, 96
++    st.d  $s5, $sp, 104
++    st.d  $s6, $sp, 112
++    st.d  $s7, $sp, 120
++    st.d  $s8, $sp, 128
++    st.d  $fp, $sp, 136
++    st.d  $ra, $sp, 144
++
++    # save RA as PC
++    st.d  $ra, $sp, 152
++
++    # store SP (pointing to context-data) in A3
++    move  $a3, $sp
++
++    # restore SP (pointing to context-data) from A0
++    move  $sp, $a0
++
++    # load fs0 - fs11
++    fld.d  $fs0, $sp, 0
++    fld.d  $fs1, $sp, 8
++    fld.d  $fs2, $sp, 16
++    fld.d  $fs3, $sp, 24
++    fld.d  $fs4, $sp, 32
++    fld.d  $fs5, $sp, 40
++    fld.d  $fs6, $sp, 48
++    fld.d  $fs7, $sp, 56
++
++    #load s0 - s11, fp, ra
++    ld.d  $s0, $sp, 64
++    ld.d  $s1, $sp, 72
++    ld.d  $s2, $sp, 80
++    ld.d  $s3, $sp, 88
++    ld.d  $s4, $sp, 96
++    ld.d  $s5, $sp, 104
++    ld.d  $s6, $sp, 112
++    ld.d  $s7, $sp, 120
++    ld.d  $s8, $sp, 128
++    ld.d  $fp, $sp, 136
++    ld.d  $ra, $sp, 144
++
++    # return transfer_t from jump
++    # pass transfer_t as first arg in context function
++    # a0 == FCTX, a1 == DATA
++    move  $a0, $a3
++
++    # adjust stack
++    addi.d  $sp, $sp, 160
++
++    # jump to context
++    jr  $a2
 +.size ontop_fcontext, .-ontop_fcontext
 +
 +/* Mark that we don't need executable stack.  */
 +.section .note.GNU-stack,"",%progbits
 diff --git a/tools/build/src/engine/jam.h b/tools/build/src/engine/jam.h
-index 59e5f82c0..76a786979 100644
+index 59e5f82..76a7869 100644
 --- a/tools/build/src/engine/jam.h
 +++ b/tools/build/src/engine/jam.h
 @@ -446,6 +446,10 @@
@@ -434,30 +645,16 @@ index 59e5f82c0..76a786979 100644
  #ifndef OSPLAT
      #define OSPLAT ""
  #endif
-diff --git a/tools/build/src/tools/builtin.py b/tools/build/src/tools/builtin.py
-index 0368f6520..02ba21013 100644
---- a/tools/build/src/tools/builtin.py
-+++ b/tools/build/src/tools/builtin.py
-@@ -276,6 +276,9 @@ def register_globals ():
-         # z Systems (aka s390x)
-         's390x',
- 
-+        # loongarch
-+        'loongarch64',
-+
-         # Combined architectures for platforms/toolsets that support building for
-         # multiple architectures at once. "combined" would be the default multi-arch
-         # for the toolset.
 diff --git a/tools/build/src/tools/features/architecture-feature.jam b/tools/build/src/tools/features/architecture-feature.jam
-index e3203078e..1048feafd 100644
+index e320307..124b4be 100644
 --- a/tools/build/src/tools/features/architecture-feature.jam
 +++ b/tools/build/src/tools/features/architecture-feature.jam
 @@ -45,6 +45,9 @@ feature.feature architecture
          # RISC-V
          riscv
  
-+	# loongarch
-+	loongarch64
++       # loongarch
++       loongarch
 +
          # z Systems (aka s390x)
          s390x
diff --git a/boost.spec b/boost.spec
index f12cb22..6ed5d36 100644
--- a/boost.spec
+++ b/boost.spec
@@ -2,7 +2,7 @@
 
 Name:           boost
 Version:        1.78.0
-Release:        16
+Release:        17
 Summary:        The free peer-reviewed portable C++ source libraries
 License:        Boost Software License 1.0
 URL:            http://www.boost.org
@@ -464,6 +464,10 @@ find libs -name example -exec cp {} boost-example --parents -r \;
 %{_libdir}/*.a
 
 %changelog
+* Fri Jan 6 2023 Wenlong Zhang<zhangwenlong@loongson.cn> - 1.78.0-17
+- update the patch for loongarch
+- fix build error: No best alternative for libs/context/build/asm_sources
+
 * Fri Jan 6 2023 Wenlong Zhang<zhangwenlong@loongson.cn> - 1.78.0-16
 - add boost context support for loongarch64