kicad-developers team mailing list archive

[Tomasz Wlostowski <tomasz.wlostowski@xxxxxxx>]

On 21.01.2016 17:34, Simon Richter wrote:
> Hi,
> 

> IIRC there are a number of
> people running KiCad on ARM based systems, 

Patch for 32-bit ARM (tested on a raspberry pi) attached.

Tom

> 
>    Simon
> 
> 
> 
> _______________________________________________
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> 

>From ea3a58c2a3f8ff4d59532992c06bf197d442c161 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tomasz=20W=C5=82ostowski?= <tomasz.wlostowski@xxxxxxx>
Date: Thu, 21 Jan 2016 20:25:08 +0100
Subject: [PATCH] replaced boost::context with libcontext

---
 CMakeLists.txt               |   2 +-
 common/CMakeLists.txt        |   2 +
 common/system/libcontext.cpp | 609 +++++++++++++++++++++++++++++++++++++++++++
 include/system/libcontext.h  |  85 ++++++
 include/tool/coroutine.h     |  27 +-
 5 files changed, 705 insertions(+), 20 deletions(-)
 create mode 100644 common/system/libcontext.cpp
 create mode 100644 include/system/libcontext.h

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f655f37..bea5039 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -460,7 +460,7 @@ find_package( Cairo 1.8.8 REQUIRED )
 #
 # Note: Prior to Boost 1.59, the Boost context library is not built when compiling on windows
 #       with GCC.  You must patch the Boost sources.
-find_package( Boost 1.54.0 REQUIRED COMPONENTS context system thread )
+find_package( Boost 1.54.0 REQUIRED COMPONENTS system thread )
 
 # Include MinGW resource compiler.
 include( MinGWResourceCompiler )
diff --git a/common/CMakeLists.txt b/common/CMakeLists.txt
index 048ddf0..d45064c 100644
--- a/common/CMakeLists.txt
+++ b/common/CMakeLists.txt
@@ -271,6 +271,8 @@ endif()
 
 set( COMMON_SRCS
     ${COMMON_SRCS}
+    system/libcontext.cpp
+
     kicad_curl/kicad_curl.cpp
     kicad_curl/kicad_curl_easy.cpp
 
diff --git a/common/system/libcontext.cpp b/common/system/libcontext.cpp
new file mode 100644
index 0000000..f2ce880
--- /dev/null
+++ b/common/system/libcontext.cpp
@@ -0,0 +1,609 @@
+/*
+
+    auto-generated file, do not modify!
+    libcontext - a slightly more portable version of boost::context
+    Copyright Martin Husemann 2013.
+    Copyright Oliver Kowalke 2009.
+    Copyright Sergue E. Leontiev 2013
+    Copyright Thomas Sailer 2013.
+    Minor modifications by Tomasz Wlostowski 2016.
+
+ 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)
+
+*/
+#include <system/libcontext.h>
+
+#if defined(LIBCONTEXT_PLATFORM_windows_i386) && defined(LIBCONTEXT_COMPILER_gcc)
+__asm (
+".text\n"
+".p2align 4,,15\n"
+".globl	_jump_fcontext\n"
+".def	_jump_fcontext;	.scl	2;	.type	32;	.endef\n"
+"_jump_fcontext:\n"
+"    mov    0x10(%esp),%ecx\n"
+"    push   %ebp\n"
+"    push   %ebx\n"
+"    push   %esi\n"
+"    push   %edi\n"
+"    mov    %fs:0x18,%edx\n"
+"    mov    (%edx),%eax\n"
+"    push   %eax\n"
+"    mov    0x4(%edx),%eax\n"
+"    push   %eax\n"
+"    mov    0x8(%edx),%eax\n"
+"    push   %eax\n"
+"    mov    0xe0c(%edx),%eax\n"
+"    push   %eax\n"
+"    mov    0x10(%edx),%eax\n"
+"    push   %eax\n"
+"    lea    -0x8(%esp),%esp\n"
+"    test   %ecx,%ecx\n"
+"    je     nxt1\n"
+"    stmxcsr (%esp)\n"
+"    fnstcw 0x4(%esp)\n"
+"nxt1:\n"
+"    mov    0x30(%esp),%eax\n"
+"    mov    %esp,(%eax)\n"
+"    mov    0x34(%esp),%edx\n"
+"    mov    0x38(%esp),%eax\n"
+"    mov    %edx,%esp\n"
+"    test   %ecx,%ecx\n"
+"    je     nxt2\n"
+"    ldmxcsr (%esp)\n"
+"    fldcw  0x4(%esp)\n"
+"nxt2:\n"
+"    lea    0x8(%esp),%esp\n"
+"    mov    %fs:0x18,%edx\n"
+"    pop    %ecx\n"
+"    mov    %ecx,0x10(%edx)\n"
+"    pop    %ecx\n"
+"    mov    %ecx,0xe0c(%edx)\n"
+"    pop    %ecx\n"
+"    mov    %ecx,0x8(%edx)\n"
+"    pop    %ecx\n"
+"    mov    %ecx,0x4(%edx)\n"
+"    pop    %ecx\n"
+"    mov    %ecx,(%edx)\n"
+"    pop    %edi\n"
+"    pop    %esi\n"
+"    pop    %ebx\n"
+"    pop    %ebp\n"
+"    pop    %edx\n"
+"    mov    %eax,0x4(%esp)\n"
+"    jmp    *%edx\n"
+);
+
+#endif
+
+#if defined(LIBCONTEXT_PLATFORM_windows_i386) && defined(LIBCONTEXT_COMPILER_gcc)
+__asm (
+".text\n"
+".p2align 4,,15\n"
+".globl	_make_fcontext\n"
+".def	_make_fcontext;	.scl	2;	.type	32;	.endef\n"
+"_make_fcontext:\n"
+"mov    0x4(%esp),%eax\n"
+"lea    -0x8(%eax),%eax\n"
+"and    $0xfffffff0,%eax\n"
+"lea    -0x3c(%eax),%eax\n"
+"mov    0x4(%esp),%ecx\n"
+"mov    %ecx,0x14(%eax)\n"
+"mov    0x8(%esp),%edx\n"
+"neg    %edx\n"
+"lea    (%ecx,%edx,1),%ecx\n"
+"mov    %ecx,0x10(%eax)\n"
+"mov    %ecx,0xc(%eax)\n"
+"mov    0xc(%esp),%ecx\n"
+"mov    %ecx,0x2c(%eax)\n"
+"stmxcsr (%eax)\n"
+"fnstcw 0x4(%eax)\n"
+"mov    $finish,%ecx\n"
+"mov    %ecx,0x30(%eax)\n"
+"mov    %fs:0x0,%ecx\n"
+"walk:\n"
+"mov    (%ecx),%edx\n"
+"inc    %edx\n"
+"je     found\n"
+"dec    %edx\n"
+"xchg   %edx,%ecx\n"
+"jmp    walk\n"
+"found:\n"
+"mov    0x4(%ecx),%ecx\n"
+"mov    %ecx,0x3c(%eax)\n"
+"mov    $0xffffffff,%ecx\n"
+"mov    %ecx,0x38(%eax)\n"
+"lea    0x38(%eax),%ecx\n"
+"mov    %ecx,0x18(%eax)\n"
+"ret\n"
+"finish:\n"
+"xor    %eax,%eax\n"
+"mov    %eax,(%esp)\n"
+"call   _exit\n"
+"hlt\n"
+".def	__exit;	.scl	2;	.type	32;	.endef  \n"
+);
+
+#endif
+
+#if defined(LIBCONTEXT_PLATFORM_windows_x86_64) && defined(LIBCONTEXT_COMPILER_gcc)
+__asm (
+".text\n"
+".p2align 4,,15\n"
+".globl	jump_fcontext\n"
+".def	jump_fcontext;	.scl	2;	.type	32;	.endef\n"
+".seh_proc	jump_fcontext\n"
+"jump_fcontext:\n"
+".seh_endprologue\n"
+"	push   %rbp\n"
+"	push   %rbx\n"
+"	push   %rsi\n"
+"	push   %rdi\n"
+"	push   %r15\n"
+"	push   %r14\n"
+"	push   %r13\n"
+"	push   %r12\n"
+"	mov    %gs:0x30,%r10\n"
+"	mov    0x8(%r10),%rax\n"
+"	push   %rax\n"
+"	mov    0x10(%r10),%rax\n"
+"	push   %rax\n"
+"	mov    0x1478(%r10),%rax\n"
+"	push   %rax\n"
+"	mov    0x18(%r10),%rax\n"
+"	push   %rax\n"
+"	lea    -0xa8(%rsp),%rsp\n"
+"	test   %r9,%r9\n"
+"	je     nxt1\n"
+"	stmxcsr 0xa0(%rsp)\n"
+"	fnstcw 0xa4(%rsp)\n"
+"	movaps %xmm6,(%rsp)\n"
+"	movaps %xmm7,0x10(%rsp)\n"
+"	movaps %xmm8,0x20(%rsp)\n"
+"	movaps %xmm9,0x30(%rsp)\n"
+"	movaps %xmm10,0x40(%rsp)\n"
+"	movaps %xmm11,0x50(%rsp)\n"
+"	movaps %xmm12,0x60(%rsp)\n"
+"	movaps %xmm13,0x70(%rsp)\n"
+"	movaps %xmm14,0x80(%rsp)\n"
+"	movaps %xmm15,0x90(%rsp)\n"
+"nxt1:\n"
+"	xor    %r10,%r10\n"
+"	push   %r10\n"
+"	mov    %rsp,(%rcx)\n"
+"	mov    %rdx,%rsp\n"
+"	pop    %r10\n"
+"	test   %r9,%r9\n"
+"	je     nxt2\n"
+"	ldmxcsr 0xa0(%rsp)\n"
+"	fldcw  0xa4(%rsp)\n"
+"	movaps (%rsp),%xmm6\n"
+"	movaps 0x10(%rsp),%xmm7\n"
+"	movaps 0x20(%rsp),%xmm8\n"
+"	movaps 0x30(%rsp),%xmm9\n"
+"	movaps 0x40(%rsp),%xmm10\n"
+"	movaps 0x50(%rsp),%xmm11\n"
+"	movaps 0x60(%rsp),%xmm12\n"
+"	movaps 0x70(%rsp),%xmm13\n"
+"	movaps 0x80(%rsp),%xmm14\n"
+"	movaps 0x90(%rsp),%xmm15\n"
+"nxt2:\n"
+"	mov    $0xa8,%rcx\n"
+"    test   %r10,%r10\n"
+"    je     nxt3\n"
+"    add    $0x8,%rcx\n"
+"nxt3:\n"
+"	lea    (%rsp,%rcx,1),%rsp\n"
+"	mov    %gs:0x30,%r10\n"
+"	pop    %rax\n"
+"	mov    %rax,0x18(%r10)\n"
+"	pop    %rax\n"
+"	mov    %rax,0x1478(%r10)\n"
+"	pop    %rax\n"
+"	mov    %rax,0x10(%r10)\n"
+"	pop    %rax\n"
+"	mov    %rax,0x8(%r10)\n"
+"	pop    %r12\n"
+"	pop    %r13\n"
+"	pop    %r14\n"
+"	pop    %r15\n"
+"	pop    %rdi\n"
+"	pop    %rsi\n"
+"	pop    %rbx\n"
+"	pop    %rbp\n"
+"	pop    %r10\n"
+"	mov    %r8,%rax\n"
+"	mov    %r8,%rcx\n"
+"	jmpq   *%r10\n"
+".seh_endproc\n"
+);
+
+#endif
+
+#if defined(LIBCONTEXT_PLATFORM_windows_x86_64) && defined(LIBCONTEXT_COMPILER_gcc)
+__asm (
+".text\n"
+".p2align 4,,15\n"
+".globl	make_fcontext\n"
+".def	make_fcontext;	.scl	2;	.type	32;	.endef\n"
+".seh_proc	make_fcontext\n"
+"make_fcontext:\n"
+".seh_endprologue\n"
+"mov    %rcx,%rax\n"
+"sub    $0x28,%rax\n"
+"and    $0xfffffffffffffff0,%rax\n"
+"sub    $0x128,%rax\n"
+"mov    %r8,0x118(%rax)\n"
+"mov    %rcx,0xd0(%rax)\n"
+"neg    %rdx\n"
+"lea    (%rcx,%rdx,1),%rcx\n"
+"mov    %rcx,0xc8(%rax)\n"
+"mov    %rcx,0xc0(%rax)\n"
+"stmxcsr 0xa8(%rax)\n"
+"fnstcw 0xac(%rax)\n"
+"leaq  finish(%rip), %rcx\n"
+"mov    %rcx,0x120(%rax)\n"
+"mov    $0x1,%rcx\n"
+"mov    %rcx,(%rax)\n"
+"retq\n"
+"finish:\n"
+"xor    %rcx,%rcx\n"
+"callq  0x63\n"
+"hlt\n"
+"   .seh_endproc\n"
+".def	_exit;	.scl	2;	.type	32;	.endef  \n"
+);
+
+#endif
+
+#if defined(LIBCONTEXT_PLATFORM_linux_i386) && defined(LIBCONTEXT_COMPILER_gcc)
+__asm (
+".text\n"
+".globl jump_fcontext\n"
+".align 2\n"
+".type jump_fcontext,@function\n"
+"jump_fcontext:\n"
+"    movl  0x10(%esp), %ecx\n"
+"    pushl  %ebp  \n"
+"    pushl  %ebx  \n"
+"    pushl  %esi  \n"
+"    pushl  %edi  \n"
+"    leal  -0x8(%esp), %esp\n"
+"    test  %ecx, %ecx\n"
+"    je  1f\n"
+"    stmxcsr  (%esp)\n"
+"    fnstcw  0x4(%esp)\n"
+"1:\n"
+"    movl  0x1c(%esp), %eax\n"
+"    movl  %esp, (%eax)\n"
+"    movl  0x20(%esp), %edx\n"
+"    movl  0x24(%esp), %eax\n"
+"    movl  %edx, %esp\n"
+"    test  %ecx, %ecx\n"
+"    je  2f\n"
+"    ldmxcsr  (%esp)\n"
+"    fldcw  0x4(%esp)\n"
+"2:\n"
+"    leal  0x8(%esp), %esp\n"
+"    popl  %edi  \n"
+"    popl  %esi  \n"
+"    popl  %ebx  \n"
+"    popl  %ebp  \n"
+"    popl  %edx\n"
+"    movl  %eax, 0x4(%esp)\n"
+"    jmp  *%edx\n"
+".size jump_fcontext,.-jump_fcontext\n"
+".section .note.GNU-stack,\"\",%progbits\n"
+);
+
+#endif
+
+#if defined(LIBCONTEXT_PLATFORM_linux_i386) && defined(LIBCONTEXT_COMPILER_gcc)
+__asm (
+".text\n"
+".globl make_fcontext\n"
+".align 2\n"
+".type make_fcontext,@function\n"
+"make_fcontext:\n"
+"    movl  0x4(%esp), %eax\n"
+"    leal  -0x8(%eax), %eax\n"
+"    andl  $-16, %eax\n"
+"    leal  -0x20(%eax), %eax\n"
+"    movl  0xc(%esp), %edx\n"
+"    movl  %edx, 0x18(%eax)\n"
+"    stmxcsr  (%eax)\n"
+"    fnstcw  0x4(%eax)\n"
+"    call  1f\n"
+"1:  popl  %ecx\n"
+"    addl  $finish-1b, %ecx\n"
+"    movl  %ecx, 0x1c(%eax)\n"
+"    ret \n"
+"finish:\n"
+"    call  2f\n"
+"2:  popl  %ebx\n"
+"    addl  $_GLOBAL_OFFSET_TABLE_+[.-2b], %ebx\n"
+"    xorl  %eax, %eax\n"
+"    movl  %eax, (%esp)\n"
+"    call  _exit@PLT\n"
+"    hlt\n"
+".size make_fcontext,.-make_fcontext\n"
+".section .note.GNU-stack,\"\",%progbits\n"
+);
+
+#endif
+
+#if defined(LIBCONTEXT_PLATFORM_linux_x86_64) && defined(LIBCONTEXT_COMPILER_gcc)
+__asm (
+".text\n"
+".globl jump_fcontext\n"
+".type jump_fcontext,@function\n"
+".align 16\n"
+"jump_fcontext:\n"
+"    pushq  %rbp  \n"
+"    pushq  %rbx  \n"
+"    pushq  %r15  \n"
+"    pushq  %r14  \n"
+"    pushq  %r13  \n"
+"    pushq  %r12  \n"
+"    leaq  -0x8(%rsp), %rsp\n"
+"    cmp  $0, %rcx\n"
+"    je  1f\n"
+"    stmxcsr  (%rsp)\n"
+"    fnstcw   0x4(%rsp)\n"
+"1:\n"
+"    movq  %rsp, (%rdi)\n"
+"    movq  %rsi, %rsp\n"
+"    cmp  $0, %rcx\n"
+"    je  2f\n"
+"    ldmxcsr  (%rsp)\n"
+"    fldcw  0x4(%rsp)\n"
+"2:\n"
+"    leaq  0x8(%rsp), %rsp\n"
+"    popq  %r12  \n"
+"    popq  %r13  \n"
+"    popq  %r14  \n"
+"    popq  %r15  \n"
+"    popq  %rbx  \n"
+"    popq  %rbp  \n"
+"    popq  %r8\n"
+"    movq  %rdx, %rax\n"
+"    movq  %rdx, %rdi\n"
+"    jmp  *%r8\n"
+".size jump_fcontext,.-jump_fcontext\n"
+".section .note.GNU-stack,\"\",%progbits\n"
+);
+
+#endif
+
+#if defined(LIBCONTEXT_PLATFORM_linux_x86_64) && defined(LIBCONTEXT_COMPILER_gcc)
+__asm (
+".text\n"
+".globl make_fcontext\n"
+".type make_fcontext,@function\n"
+".align 16\n"
+"make_fcontext:\n"
+"    movq  %rdi, %rax\n"
+"    andq  $-16, %rax\n"
+"    leaq  -0x48(%rax), %rax\n"
+"    movq  %rdx, 0x38(%rax)\n"
+"    stmxcsr  (%rax)\n"
+"    fnstcw   0x4(%rax)\n"
+"    leaq  finish(%rip), %rcx\n"
+"    movq  %rcx, 0x40(%rax)\n"
+"    ret \n"
+"finish:\n"
+"    xorq  %rdi, %rdi\n"
+"    call  _exit@PLT\n"
+"    hlt\n"
+".size make_fcontext,.-make_fcontext\n"
+".section .note.GNU-stack,\"\",%progbits\n"
+);
+
+#endif
+
+#if defined(LIBCONTEXT_PLATFORM_apple_x86_64) && defined(LIBCONTEXT_COMPILER_gcc)
+__asm (
+".text\n"
+".globl _jump_fcontext\n"
+".align 8\n"
+"_jump_fcontext:\n"
+"    pushq  %rbp  \n"
+"    pushq  %rbx  \n"
+"    pushq  %r15  \n"
+"    pushq  %r14  \n"
+"    pushq  %r13  \n"
+"    pushq  %r12  \n"
+"    leaq  -0x8(%rsp), %rsp\n"
+"    cmp  $0, %rcx\n"
+"    je  1f\n"
+"    stmxcsr  (%rsp)\n"
+"    fnstcw   0x4(%rsp)\n"
+"1:\n"
+"    movq  %rsp, (%rdi)\n"
+"    movq  %rsi, %rsp\n"
+"    cmp  $0, %rcx\n"
+"    je  2f\n"
+"    ldmxcsr  (%rsp)\n"
+"    fldcw  0x4(%rsp)\n"
+"2:\n"
+"    leaq  0x8(%rsp), %rsp\n"
+"    popq  %r12  \n"
+"    popq  %r13  \n"
+"    popq  %r14  \n"
+"    popq  %r15  \n"
+"    popq  %rbx  \n"
+"    popq  %rbp  \n"
+"    popq  %r8\n"
+"    movq  %rdx, %rax\n"
+"    movq  %rdx, %rdi\n"
+"    jmp  *%r8\n"
+);
+
+#endif
+
+#if defined(LIBCONTEXT_PLATFORM_apple_x86_64) && defined(LIBCONTEXT_COMPILER_gcc)
+__asm (
+".text\n"
+".globl _make_fcontext\n"
+".align 8\n"
+"_make_fcontext:\n"
+"    movq  %rdi, %rax\n"
+"    movabs  $-16,           %r8\n"
+"    andq    %r8,            %rax\n"
+"    leaq  -0x48(%rax), %rax\n"
+"    movq  %rdx, 0x38(%rax)\n"
+"    stmxcsr  (%rax)\n"
+"    fnstcw   0x4(%rax)\n"
+"    leaq  finish(%rip), %rcx\n"
+"    movq  %rcx, 0x40(%rax)\n"
+"    ret \n"
+"finish:\n"
+"    xorq  %rdi, %rdi\n"
+"    call  __exit\n"
+"    hlt\n"
+);
+
+#endif
+
+#if defined(LIBCONTEXT_PLATFORM_apple_i386) && defined(LIBCONTEXT_COMPILER_gcc)
+__asm (
+".text\n"
+".globl _jump_fcontext\n"
+".align 2\n"
+"_jump_fcontext:\n"
+"    movl  0x10(%esp), %ecx\n"
+"    pushl  %ebp  \n"
+"    pushl  %ebx  \n"
+"    pushl  %esi  \n"
+"    pushl  %edi  \n"
+"    leal  -0x8(%esp), %esp\n"
+"    test  %ecx, %ecx\n"
+"    je  1f\n"
+"    stmxcsr  (%esp)\n"
+"    fnstcw  0x4(%esp)\n"
+"1:\n"
+"    movl  0x1c(%esp), %eax\n"
+"    movl  %esp, (%eax)\n"
+"    movl  0x20(%esp), %edx\n"
+"    movl  0x24(%esp), %eax\n"
+"    movl  %edx, %esp\n"
+"    test  %ecx, %ecx\n"
+"    je  2f\n"
+"    ldmxcsr  (%esp)\n"
+"    fldcw  0x4(%esp)\n"
+"2:\n"
+"    leal  0x8(%esp), %esp\n"
+"    popl  %edi  \n"
+"    popl  %esi  \n"
+"    popl  %ebx  \n"
+"    popl  %ebp  \n"
+"    popl  %edx\n"
+"    movl  %eax, 0x4(%esp)\n"
+"    jmp  *%edx\n"
+);
+
+#endif
+
+#if defined(LIBCONTEXT_PLATFORM_apple_i386) && defined(LIBCONTEXT_COMPILER_gcc)
+__asm (
+".text\n"
+".globl _make_fcontext\n"
+".align 2\n"
+"_make_fcontext:\n"
+"    movl  0x4(%esp), %eax\n"
+"    leal  -0x8(%eax), %eax\n"
+"    andl  $-16, %eax\n"
+"    leal  -0x20(%eax), %eax\n"
+"    movl  0xc(%esp), %edx\n"
+"    movl  %edx, 0x18(%eax)\n"
+"    stmxcsr  (%eax)\n"
+"    fnstcw  0x4(%eax)\n"
+"    call  1f\n"
+"1:  popl  %ecx\n"
+"    addl  $finish-1b, %ecx\n"
+"    movl  %ecx, 0x1c(%eax)\n"
+"    ret \n"
+"finish:\n"
+"    xorl  %eax, %eax\n"
+"    movl  %eax, (%esp)\n"
+"    call  __exit\n"
+"    hlt\n"
+);
+
+#endif
+
+#if defined(LIBCONTEXT_PLATFORM_linux_arm32) && defined(LIBCONTEXT_COMPILER_gcc)
+__asm (
+".text\n"
+".globl jump_fcontext\n"
+".align 2\n"
+".type jump_fcontext,%function\n"
+"jump_fcontext:\n"
+"    @ save LR as PC\n"
+"    push {lr}\n"
+"    @ save V1-V8,LR\n"
+"    push {v1-v8,lr}\n"
+"    @ prepare stack for FPU\n"
+"    sub  sp, sp, #64\n"
+"    @ test if fpu env should be preserved\n"
+"    cmp  a4, #0\n"
+"    beq  1f\n"
+"    @ save S16-S31\n"
+"    vstmia  sp, {d8-d15}\n"
+"1:\n"
+"    @ store RSP (pointing to context-data) in A1\n"
+"    str  sp, [a1]\n"
+"    @ restore RSP (pointing to context-data) from A2\n"
+"    mov  sp, a2\n"
+"    @ test if fpu env should be preserved\n"
+"    cmp  a4, #0\n"
+"    beq  2f\n"
+"    @ restore S16-S31\n"
+"    vldmia  sp, {d8-d15}\n"
+"2:\n"
+"    @ prepare stack for FPU\n"
+"    add  sp, sp, #64\n"
+"    @ use third arg as return value after jump\n"
+"    @ and as first arg in context function\n"
+"    mov  a1, a3\n"
+"    @ restore v1-V8,LR,PC\n"
+"    pop {v1-v8,lr,pc}\n"
+".size jump_fcontext,.-jump_fcontext\n"
+"@ Mark that we don't need executable stack.\n"
+".section .note.GNU-stack,\"\",%progbits\n"
+);
+
+#endif
+
+#if defined(LIBCONTEXT_PLATFORM_linux_arm32) && defined(LIBCONTEXT_COMPILER_gcc)
+__asm (
+".text\n"
+".globl make_fcontext\n"
+".align 2\n"
+".type make_fcontext,%function\n"
+"make_fcontext:\n"
+"    @ shift address in A1 to lower 16 byte boundary\n"
+"    bic  a1, a1, #15\n"
+"    @ reserve space for context-data on context-stack\n"
+"    sub  a1, a1, #104\n"
+"    @ third arg of make_fcontext() == address of context-function\n"
+"    str  a3, [a1,#100]\n"
+"    @ compute abs address of label finish\n"
+"    adr  a2, finish\n"
+"    @ save address of finish as return-address for context-function\n"
+"    @ will be entered after context-function returns\n"
+"    str  a2, [a1,#96]\n"
+"    bx  lr @ return pointer to context-data\n"
+"finish:\n"
+"    @ exit code is zero\n"
+"    mov  a1, #0\n"
+"    @ exit application\n"
+"    bl  _exit@PLT\n"
+".size make_fcontext,.-make_fcontext\n"
+"@ Mark that we don't need executable stack.\n"
+".section .note.GNU-stack,\"\",%progbits\n"
+);
+
+#endif
+
diff --git a/include/system/libcontext.h b/include/system/libcontext.h
new file mode 100644
index 0000000..0dded6d
--- /dev/null
+++ b/include/system/libcontext.h
@@ -0,0 +1,85 @@
+/*
+
+    libcontext - a slightly more portable version of boost::context
+
+    Copyright Martin Husemann 2013.
+    Copyright Oliver Kowalke 2009.
+    Copyright Sergue E. Leontiev 2013.
+    Copyright Thomas Sailer 2013.
+    Minor modifications by Tomasz Wlostowski 2016.
+
+ 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 __LIBCONTEXT_H
+#define __LIBCONTEXT_H
+
+#include <stdint.h>
+#include <stdio.h>
+#include <stddef.h>
+
+
+#if defined(__GNUC__) || defined(__APPLE__)
+
+    #define LIBCONTEXT_COMPILER_gcc
+
+    #if defined(__linux__)
+	#ifdef __x86_64__
+	    #define LIBCONTEXT_PLATFORM_linux_x86_64
+	    #define LIBCONTEXT_CALL_CONVENTION
+
+	#elif __i386__
+	    #define LIBCONTEXT_PLATFORM_linux_i386
+	    #define LIBCONTEXT_CALL_CONVENTION
+	#elif __arm__
+	    #define LIBCONTEXT_PLATFORM_linux_arm32
+	    #define LIBCONTEXT_CALL_CONVENTION
+	#endif
+
+    #elif defined(__MINGW32__) || defined (__MINGW64__)
+	#if defined(__x86_64__)
+	    #define LIBCONTEXT_COMPILER_gcc
+    	    #define LIBCONTEXT_PLATFORM_windows_x86_64
+	    #define LIBCONTEXT_CALL_CONVENTION
+	#endif
+
+	#if defined(__i386__)
+	    #define LIBCONTEXT_COMPILER_gcc
+	    #define LIBCONTEXT_PLATFORM_windows_i386
+	    #define LIBCONTEXT_CALL_CONVENTION __cdecl
+	#endif
+    #elif defined(__APPLE__) && defined(__MACH__)
+	#if defined (__i386__)
+	    #define LIBCONTEXT_PLATFORM_apple_i386
+	    #define LIBCONTEXT_CALL_CONVENTION
+	#elif defined (__x86_64__)
+	    #define LIBCONTEXT_PLATFORM_apple_x86_64
+	    #define LIBCONTEXT_CALL_CONVENTION
+	#endif
+    #endif
+#endif
+
+
+#if defined(_WIN32_WCE)
+typedef int intptr_t;
+#endif
+
+typedef void*   fcontext_t;
+
+#ifdef __cplusplus
+extern "C"{
+#endif
+
+
+intptr_t LIBCONTEXT_CALL_CONVENTION jump_fcontext( fcontext_t * ofc, fcontext_t nfc,
+                                               intptr_t vp, bool preserve_fpu = false);
+fcontext_t LIBCONTEXT_CALL_CONVENTION make_fcontext( void * sp, size_t size, void (* fn)( intptr_t) );
+
+#ifdef __cplusplus
+};
+#endif
+
+#endif
diff --git a/include/tool/coroutine.h b/include/tool/coroutine.h
index c7eaf5f..afef8b2 100644
--- a/include/tool/coroutine.h
+++ b/include/tool/coroutine.h
@@ -27,8 +27,7 @@
 
 #include <cstdlib>
 
-#include <boost/context/fcontext.hpp>
-#include <boost/version.hpp>
+#include <system/libcontext.h>
 
 #include "delegate.h"
 
@@ -92,10 +91,8 @@ public:
         if( m_saved )
             delete m_saved;
 
-#if BOOST_VERSION >= 105600
         if( m_self )
             delete m_self;
-#endif
 
         if( m_stack )
             free( m_stack );
@@ -156,13 +153,9 @@ public:
         assert( m_saved == NULL );
 
         m_args = &aArgs;
-#if BOOST_VERSION >= 105600
-        m_self = new boost::context::fcontext_t();
-        *m_self = boost::context::make_fcontext( sp, m_stackSize, callerStub );
-#else
-        m_self = boost::context::make_fcontext( sp, m_stackSize, callerStub );
-#endif
-        m_saved = new boost::context::fcontext_t();
+        m_self = new fcontext_t();
+        *m_self = make_fcontext( sp, m_stackSize, callerStub );
+        m_saved = new fcontext_t();
 
         m_running = true;
         // off we go!
@@ -222,14 +215,10 @@ private:
     }
 
     ///> Wrapper for jump_fcontext to assure compatibility between different boost versions
-    static inline intptr_t jump(boost::context::fcontext_t* aOld, boost::context::fcontext_t* aNew,
+    static inline intptr_t jump(fcontext_t* aOld, fcontext_t* aNew,
                                 intptr_t aP, bool aPreserveFPU = true )
     {
-#if BOOST_VERSION >= 105600
-        return boost::context::jump_fcontext( aOld, *aNew, aP, aPreserveFPU );
-#else
-        return boost::context::jump_fcontext( aOld, aNew, aP, aPreserveFPU );
-#endif
+        return jump_fcontext( aOld, *aNew, aP, aPreserveFPU );
     }
 
     template <typename T>
@@ -252,10 +241,10 @@ private:
     ReturnType m_retVal;
 
     ///< saved caller context
-    boost::context::fcontext_t* m_saved;
+    fcontext_t* m_saved;
 
     ///< saved coroutine context
-    boost::context::fcontext_t* m_self;
+    fcontext_t* m_self;
 
     ///< coroutine stack
     void* m_stack;
-- 
1.9.1