--- boost_1_57_0/libs/context/build/Jamfile.v2 2014-10-20 01:26:00.000000000 -0500 +++ boost_1_57_0/libs/context/build/Jamfile.v2 2015-05-04 17:43:10.812161900 -0500 @@ -29,6 +29,7 @@ local rule default_binary_format ( ) local tmp = elf ; if [ os.name ] = "MACOSX" { tmp = mach-o ; } if [ os.name ] = "NT" { tmp = pe ; } + if [ os.name ] = "CYGWIN" { tmp = pe ; } if [ os.name ] = "AIX" { tmp = xcoff ; } return $(tmp) ; } @@ -581,6 +582,16 @@ alias asm_context_sources ; alias asm_context_sources + : asm/make_i386_ms_pe_gas.S + asm/jump_i386_ms_pe_gas.S + dummy.cpp + : 32 + x86 + pe + gcc + ; + +alias asm_context_sources : asm/make_i386_ms_pe_masm.asm asm/jump_i386_ms_pe_masm.asm dummy.cpp @@ -715,6 +726,16 @@ alias asm_context_sources ; alias asm_context_sources + : asm/make_x86_64_ms_pe_gas.S + asm/jump_x86_64_ms_pe_gas.S + dummy.cpp + : 64 + x86 + pe + gcc + ; + +alias asm_context_sources : asm/make_x86_64_ms_pe_masm.asm asm/jump_x86_64_ms_pe_masm.asm dummy.cpp --- boost_1_57_0/libs/context/src/asm/jump_i386_ms_pe_gas.S 1969-12-31 18:00:00.000000000 -0600 +++ boost_1_57_0/libs/context/src/asm/jump_i386_ms_pe_gas.S 2015-05-04 17:43:10.821663100 -0500 @@ -0,0 +1,108 @@ +/* + Copyright Oliver Kowalke 2009. + Copyright Thomas Sailer 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) +*/ + +/******************************************************************** + * * + * -------------------------------------------------------------- * + * | 0 | 1 | 2 | 3 | 4 | 5 | * + * -------------------------------------------------------------- * + * | 0h | 04h | 08h | 0ch | 010h | 014h | * + * -------------------------------------------------------------- * + * | EDI | ESI | EBX | EBP | ESP | EIP | * + * -------------------------------------------------------------- * + * -------------------------------------------------------------- * + * | 6 | 7 | 8 | | * + * -------------------------------------------------------------- * + * | 018h | 01ch | 020h | | * + * -------------------------------------------------------------- * + * | sp | size | limit | | * + * -------------------------------------------------------------- * + * -------------------------------------------------------------- * + * | 9 | | * + * -------------------------------------------------------------- * + * | 024h | | * + * -------------------------------------------------------------- * + * |fc_execpt| | * + * -------------------------------------------------------------- * + * -------------------------------------------------------------- * + * | 10 | | * + * -------------------------------------------------------------- * + * | 028h | | * + * -------------------------------------------------------------- * + * |fc_strage| | * + * -------------------------------------------------------------- * + * -------------------------------------------------------------- * + * | 11 | 12 | | * + * -------------------------------------------------------------- * + * | 02ch | 030h | | * + * -------------------------------------------------------------- * + * | fc_mxcsr|fc_x87_cw| | * + * -------------------------------------------------------------- * + * * + * *****************************************************************/ + +.file "jump_i386_ms_pe_gas.S" +.text +.p2align 4,,15 +.globl _jump_fcontext +.def _jump_fcontext; .scl 2; .type 32; .endef +_jump_fcontext: + movl 0x04(%esp), %ecx /* load address of the first fcontext_t arg */ + movl %edi, (%ecx) /* save EDI */ + movl %esi, 0x04(%ecx) /* save ESI */ + movl %ebx, 0x08(%ecx) /* save EBX */ + movl %ebp, 0x0c(%ecx) /* save EBP */ + + movl %fs:(0x18), %edx /* load NT_TIB */ + movl (%edx), %eax /* load current SEH exception list */ + movl %eax, 0x24(%ecx) /* save current exception list */ + movl 0x04(%edx), %eax /* load current stack base */ + movl %eax, 0x18(%ecx) /* save current stack base */ + movl 0x08(%edx), %eax /* load current stack limit */ + movl %eax, 0x20(%ecx) /* save current stack limit */ + movl 0x10(%edx), %eax /* load fiber local storage */ + movl %eax, 0x28(%ecx) /* save fiber local storage */ + + leal 0x04(%esp), %eax /* exclude the return address */ + movl %eax, 0x10(%ecx) /* save as stack pointer */ + movl (%esp), %eax /* load return address */ + movl %eax, 0x14(%ecx) /* save return address */ + + movl 0x08(%esp), %edx /* load address of the second fcontext_t arg */ + movl (%edx), %edi /* restore EDI */ + movl 0x04(%edx), %esi /* restore ESI */ + movl 0x08(%edx), %ebx /* restore EBX */ + movl 0x0c(%edx), %ebp /* restore EBP */ + + movl 0x10(%esp), %eax /* check if fpu enve preserving was requested */ + testl %eax, %eax + je 1f + + stmxcsr 0x2c(%ecx) /* save MMX control word */ + fnstcw 0x30(%ecx) /* save x87 control word */ + ldmxcsr 0x2c(%edx) /* restore MMX control word */ + fldcw 0x30(%edx) /* restore x87 control word */ +1: + movl %edx, %ecx + movl %fs:(0x18), %edx /* load NT_TIB */ + movl 0x24(%ecx), %eax /* load SEH exception list */ + movl %eax, (%edx) /* restore next SEH item */ + movl 0x18(%ecx), %eax /* load stack base */ + movl %eax, 0x04(%edx) /* restore stack base */ + movl 0x20(%ecx), %eax /* load stack limit */ + movl %eax, 0x08(%edx) /* restore stack limit */ + movl 0x28(%ecx), %eax /* load fiber local storage */ + movl %eax, 0x10(%edx) /* restore fiber local storage */ + + movl 0x0c(%esp), %eax /* use third arg as return value after jump */ + + movl 0x10(%ecx), %esp /* restore ESP */ + movl %eax, 0x04(%esp) /* use third arg as first arg in context function */ + movl 0x14(%ecx), %ecx /* fetch the address to return to */ + + jmp *%ecx /* indirect jump to context */ --- boost_1_57_0/libs/context/src/asm/jump_x86_64_ms_pe_gas.S 1969-12-31 18:00:00.000000000 -0600 +++ boost_1_57_0/libs/context/src/asm/jump_x86_64_ms_pe_gas.S 2015-05-04 17:43:10.829664200 -0500 @@ -0,0 +1,189 @@ +/* + Copyright Oliver Kowalke 2009. + Copyright Thomas Sailer 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) +*/ + +/**************************************************************************************** + * * + * ---------------------------------------------------------------------------------- * + * | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | * + * ---------------------------------------------------------------------------------- * + * | 0x0 | 0x4 | 0x8 | 0xc | 0x10 | 0x14 | 0x18 | 0x1c | * + * ---------------------------------------------------------------------------------- * + * | R12 | R13 | R14 | R15 | * + * ---------------------------------------------------------------------------------- * + * ---------------------------------------------------------------------------------- * + * | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | * + * ---------------------------------------------------------------------------------- * + * | 0x20 | 0x24 | 0x28 | 0x2c | 0x30 | 0x34 | 0x38 | 0x3c | * + * ---------------------------------------------------------------------------------- * + * | RDI | RSI | RBX | RBP | * + * ---------------------------------------------------------------------------------- * + * ---------------------------------------------------------------------------------- * + * | 16 | 17 | 18 | 19 | | * + * ---------------------------------------------------------------------------------- * + * | 0x40 | 0x44 | 0x48 | 0x4c | | * + * ---------------------------------------------------------------------------------- * + * | RSP | RIP | | * + * ---------------------------------------------------------------------------------- * + * ---------------------------------------------------------------------------------- * + * | 20 | 21 | 22 | 23 | 24 | 25 | | * + * ---------------------------------------------------------------------------------- * + * | 0x50 | 0x54 | 0x58 | 0x5c | 0x60 | 0x64 | | * + * ---------------------------------------------------------------------------------- * + * | sp | size | limit | | * + * ---------------------------------------------------------------------------------- * + * ---------------------------------------------------------------------------------- * + * | 26 | 27 | | * + * ---------------------------------------------------------------------------------- * + * | 0x68 | 0x6c | | * + * ---------------------------------------------------------------------------------- * + * | fbr_strg | | * + * ---------------------------------------------------------------------------------- * + * ---------------------------------------------------------------------------------- * + * | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | * + * ---------------------------------------------------------------------------------- * + * | 0x70 | 0x74 | 0x78 | 0x7c | 0x80 | 0x84 | 0x88 | 0x8c | * + * ---------------------------------------------------------------------------------- * + * | fc_mxcsr|fc_x87_cw| fc_xmm | SEE registers (XMM6-XMM15) | * + * ---------------------------------------------------------------------------------- * + * ---------------------------------------------------------------------------------- * + * | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | * + * ---------------------------------------------------------------------------------- * + * | 0x90 | 0x94 | 0x98 | 0x9c | 0xa0 | 0xa4 | 0xa8 | 0xac | * + * ---------------------------------------------------------------------------------- * + * | SEE registers (XMM6-XMM15) | * + * ---------------------------------------------------------------------------------- * + * ---------------------------------------------------------------------------------- * + * | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | * + * ---------------------------------------------------------------------------------- * + * | 0xb0 | 0xb4 | 0xb8 | 0xbc | 0xc0 | 0xc4 | 0xc8 | 0xcc | * + * ---------------------------------------------------------------------------------- * + * | SEE registers (XMM6-XMM15) | * + * ---------------------------------------------------------------------------------- * + * ---------------------------------------------------------------------------------- * + * | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | * + * ---------------------------------------------------------------------------------- * + * | 0xd0 | 0xd4 | 0xd8 | 0xdc | 0xe0 | 0xe4 | 0xe8 | 0xec | * + * ---------------------------------------------------------------------------------- * + * | SEE registers (XMM6-XMM15) | * + * ---------------------------------------------------------------------------------- * + * ---------------------------------------------------------------------------------- * + * | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | * + * ---------------------------------------------------------------------------------- * + * | 0xf0 | 0xf4 | 0xf8 | 0xfc | 0x100 | 0x104 | 0x108 | 0x10c | * + * ---------------------------------------------------------------------------------- * + * | SEE registers (XMM6-XMM15) | * + * ---------------------------------------------------------------------------------- * + * ---------------------------------------------------------------------------------- * + * | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | * + * ---------------------------------------------------------------------------------- * + * | 0x110 | 0x114 | 0x118 | 0x11c | 0x120 | 0x124 | 0x128 | 0x12c | * + * ---------------------------------------------------------------------------------- * + * | SEE registers (XMM6-XMM15) | * + * ---------------------------------------------------------------------------------- * + * * + * *************************************************************************************/ + +.file "jump_x86_64_ms_pe_gas.S" +.text +.p2align 4,,15 +.globl jump_fcontext +.def jump_fcontext; .scl 2; .type 32; .endef +.seh_proc jump_fcontext +jump_fcontext: +.seh_endprologue + movq %r12, (%rcx) /* save R12 */ + movq %r13, 0x08(%rcx) /* save R13 */ + movq %r14, 0x10(%rcx) /* save R14 */ + movq %r15, 0x18(%rcx) /* save R15 */ + movq %rdi, 0x20(%rcx) /* save RDI */ + movq %rsi, 0x28(%rcx) /* save RSI */ + movq %rbx, 0x30(%rcx) /* save RBX */ + movq %rbp, 0x38(%rcx) /* save RBP */ + + movq %gs:(0x30), %r10 /* load NT_TIB */ + movq 0x08(%r10), %rax /* load current stack base */ + movq %rax, 0x50(%rcx) /* save current stack base */ + movq 0x10(%r10), %rax /* load current stack limit */ + movq %rax, 0x60(%rcx) /* save current stack limit */ + movq 0x18(%r10), %rax /* load fiber local storage */ + movq %rax, 0x68(%rcx) /* save fiber local storage */ + + testq %r9, %r9 + je 1f + + stmxcsr 0x70(%rcx) /* save MMX control and status word */ + fnstcw 0x74(%rcx) /* save x87 control word */ + /* save XMM storage */ + /* save start address of SSE register block in R10 */ + leaq 0x90(%rcx), %r10 + /* shift address in R10 to lower 16 byte boundary */ + /* == pointer to SEE register block */ + andq $-16, %r10 + + movaps %xmm6, (%r10) + movaps %xmm7, 0x10(%r10) + movaps %xmm8, 0x20(%r10) + movaps %xmm9, 0x30(%r10) + movaps %xmm10, 0x40(%r10) + movaps %xmm11, 0x50(%r10) + movaps %xmm12, 0x60(%r10) + movaps %xmm13, 0x70(%r10) + movaps %xmm14, 0x80(%r10) + movaps %xmm15, 0x90(%r10) + + ldmxcsr 0x70(%rdx) /* restore MMX control and status word */ + fldcw 0x74(%rdx) /* restore x87 control word */ + /* restore XMM storage */ + /* save start address of SSE register block in R10 */ + leaq 0x90(%rdx), %r10 + /* shift address in R10 to lower 16 byte boundary */ + /* == pointer to SEE register block */ + andq $-16, %r10 + + movaps (%r10), %xmm6 + movaps 0x10(%r10), %xmm7 + movaps 0x20(%r10), %xmm8 + movaps 0x30(%r10), %xmm9 + movaps 0x40(%r10), %xmm10 + movaps 0x50(%r10), %xmm11 + movaps 0x60(%r10), %xmm12 + movaps 0x70(%r10), %xmm13 + movaps 0x80(%r10), %xmm14 + movaps 0x90(%r10), %xmm15 + +1: + leaq 0x08(%rsp), %rax /* exclude the return address */ + movq %rax, 0x40(%rcx) /* save as stack pointer */ + movq (%rsp), %rax /* load return address */ + movq %rax, 0x48(%rcx) /* save return address */ + + movq (%rdx), %r12 /* restore R12 */ + movq 0x08(%rdx), %r13 /* restore R13 */ + movq 0x10(%rdx), %r14 /* restore R14 */ + movq 0x18(%rdx), %r15 /* restore R15 */ + movq 0x20(%rdx), %rdi /* restore RDI */ + movq 0x28(%rdx), %rsi /* restore RSI */ + movq 0x30(%rdx), %rbx /* restore RBX */ + movq 0x38(%rdx), %rbp /* restore RBP */ + + movq %gs:(0x30), %r10 /* load NT_TIB */ + movq 0x50(%rdx), %rax /* load stack base */ + movq %rax, 0x08(%r10) /* restore stack base */ + movq 0x60(%rdx), %rax /* load stack limit */ + movq %rax, 0x10(%r10) /* restore stack limit */ + movq 0x68(%rdx), %rax /* load fiber local storage */ + movq %rax, 0x18(%r10) /* restore fiber local storage */ + + movq 0x40(%rdx), %rsp /* restore RSP */ + movq 0x48(%rdx), %r10 /* fetch the address to returned to */ + + movq %r8, %rax /* use third arg as return value after jump */ + movq %r8, %rcx /* use third arg as first arg in context function */ + + jmp *%r10 /* indirect jump to caller */ +.seh_endproc --- boost_1_57_0/libs/context/src/asm/make_i386_ms_pe_gas.S 1969-12-31 18:00:00.000000000 -0600 +++ boost_1_57_0/libs/context/src/asm/make_i386_ms_pe_gas.S 2015-05-04 17:43:10.836165000 -0500 @@ -0,0 +1,115 @@ +/* + Copyright Oliver Kowalke 2009. + Copyright Thomas Sailer 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) +*/ + +/******************************************************************** + * * + * -------------------------------------------------------------- * + * | 0 | 1 | 2 | 3 | 4 | 5 | * + * -------------------------------------------------------------- * + * | 0h | 04h | 08h | 0ch | 010h | 014h | * + * -------------------------------------------------------------- * + * | EDI | ESI | EBX | EBP | ESP | EIP | * + * -------------------------------------------------------------- * + * -------------------------------------------------------------- * + * | 6 | 7 | 8 | | * + * -------------------------------------------------------------- * + * | 018h | 01ch | 020h | | * + * -------------------------------------------------------------- * + * | sp | size | limit | | * + * -------------------------------------------------------------- * + * -------------------------------------------------------------- * + * | 9 | | * + * -------------------------------------------------------------- * + * | 024h | | * + * -------------------------------------------------------------- * + * |fc_execpt| | * + * -------------------------------------------------------------- * + * -------------------------------------------------------------- * + * | 10 | | * + * -------------------------------------------------------------- * + * | 028h | | * + * -------------------------------------------------------------- * + * |fc_strage| | * + * -------------------------------------------------------------- * + * -------------------------------------------------------------- * + * | 11 | 12 | | * + * -------------------------------------------------------------- * + * | 02ch | 030h | | * + * -------------------------------------------------------------- * + * | fc_mxcsr|fc_x87_cw| | * + * -------------------------------------------------------------- * + * * + * *****************************************************************/ + +.file "make_i386_ms_pe_gas.S" +.text +.p2align 4,,15 +.globl _make_fcontext +.def _make_fcontext; .scl 2; .type 32; .endef +_make_fcontext: + movl 0x04(%esp), %eax /* load 1. arg of make_fcontext, pointer to context stack (base) */ + leal -0x34(%eax),%eax /* reserve space for fcontext_t at top of context stack */ + + /* shift address in EAX to lower 16 byte boundary */ + /* == pointer to fcontext_t and address of context stack */ + andl $-16, %eax + + movl 0x04(%esp), %ecx /* load 1. arg of make_fcontext, pointer to context stack (base) */ + movl %ecx, 0x18(%eax) /* save address of context stack (base) in fcontext_t */ + movl 0x08(%esp), %edx /* load 2. arg of make_fcontext, context stack size */ + movl %edx, 0x1c(%eax) /* save context stack size in fcontext_t */ + negl %edx /* negate stack size for LEA instruction (== substraction) */ + leal (%ecx,%edx),%ecx /* compute bottom address of context stack (limit) */ + movl %ecx, 0x20(%eax) /* save address of context stack (limit) in fcontext_t */ + movl 0x0c(%esp), %ecx /* load 3. arg of make_fcontext, pointer to context function */ + movl %ecx, 0x14(%eax) /* save address of context function in fcontext_t */ + + stmxcsr 0x02c(%eax) /* save MMX control word */ + fnstcw 0x030(%eax) /* save x87 control word */ + + leal -0x1c(%eax),%edx /* reserve space for last frame and seh on context stack, (ESP - 0x4) % 16 == 0 */ + movl %edx, 0x10(%eax) /* save address in EDX as stack pointer for context function */ + + movl $finish, %ecx /* abs address of finish */ + movl %ecx, (%edx) /* save address of finish as return address for context function */ + /* entered after context function returns */ + + /* traverse current seh chain to get the last exception handler installed by Windows */ + /* note that on Windows Server 2008 and 2008 R2, SEHOP is activated by default */ + /* the exception handler chain is tested for the presence of ntdll.dll!FinalExceptionHandler */ + /* at its end by RaiseException all seh andlers are disregarded if not present and the */ + /* program is aborted */ + movl %fs:(0x18), %ecx /* load NT_TIB into ECX */ + +walk: + movl (%ecx), %edx /* load 'next' member of current SEH into EDX */ + incl %edx /* test if 'next' of current SEH is last (== 0xffffffff) */ + jz found + decl %edx + xchgl %ecx, %edx /* exchange content; ECX contains address of next SEH */ + jmp walk /* inspect next SEH */ + +found: + movl 0x04(%ecx), %ecx /* load 'handler' member of SEH == address of last SEH handler installed by Windows */ + movl 0x10(%eax), %edx /* load address of stack pointer for context function */ + movl %ecx, 0x18(%edx) /* save address in ECX as SEH handler for context */ + movl $0xffffffff,%ecx /* set ECX to -1 */ + movl %ecx, 0x14(%edx) /* save ECX as next SEH item */ + leal 0x14(%edx), %ecx /* load address of next SEH item */ + movl %ecx, 0x24(%eax) /* save next SEH */ + + ret + +finish: + /* ESP points to same address as ESP on entry of context function + 0x4 */ + xorl %eax, %eax + movl %eax, (%esp) /* exit code is zero */ + call __exit /* exit application */ + hlt + +.def __exit; .scl 2; .type 32; .endef /* standard C library function */ --- boost_1_57_0/libs/context/src/asm/make_x86_64_ms_pe_gas.S 1969-12-31 18:00:00.000000000 -0600 +++ boost_1_57_0/libs/context/src/asm/make_x86_64_ms_pe_gas.S 2015-05-04 17:43:10.843165900 -0500 @@ -0,0 +1,132 @@ +/* + Copyright Oliver Kowalke 2009. + Copyright Thomas Sailer 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) +*/ + +/**************************************************************************************** + * * + * ---------------------------------------------------------------------------------- * + * | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | * + * ---------------------------------------------------------------------------------- * + * | 0x0 | 0x4 | 0x8 | 0xc | 0x10 | 0x14 | 0x18 | 0x1c | * + * ---------------------------------------------------------------------------------- * + * | R12 | R13 | R14 | R15 | * + * ---------------------------------------------------------------------------------- * + * ---------------------------------------------------------------------------------- * + * | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | * + * ---------------------------------------------------------------------------------- * + * | 0x20 | 0x24 | 0x28 | 0x2c | 0x30 | 0x34 | 0x38 | 0x3c | * + * ---------------------------------------------------------------------------------- * + * | RDI | RSI | RBX | RBP | * + * ---------------------------------------------------------------------------------- * + * ---------------------------------------------------------------------------------- * + * | 16 | 17 | 18 | 19 | | * + * ---------------------------------------------------------------------------------- * + * | 0x40 | 0x44 | 0x48 | 0x4c | | * + * ---------------------------------------------------------------------------------- * + * | RSP | RIP | | * + * ---------------------------------------------------------------------------------- * + * ---------------------------------------------------------------------------------- * + * | 20 | 21 | 22 | 23 | 24 | 25 | | * + * ---------------------------------------------------------------------------------- * + * | 0x50 | 0x54 | 0x58 | 0x5c | 0x60 | 0x64 | | * + * ---------------------------------------------------------------------------------- * + * | sp | size | limit | | * + * ---------------------------------------------------------------------------------- * + * ---------------------------------------------------------------------------------- * + * | 26 | 27 | | * + * ---------------------------------------------------------------------------------- * + * | 0x68 | 0x6c | | * + * ---------------------------------------------------------------------------------- * + * | fbr_strg | | * + * ---------------------------------------------------------------------------------- * + * ---------------------------------------------------------------------------------- * + * | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | * + * ---------------------------------------------------------------------------------- * + * | 0x70 | 0x74 | 0x78 | 0x7c | 0x80 | 0x84 | 0x88 | 0x8c | * + * ---------------------------------------------------------------------------------- * + * | fc_mxcsr|fc_x87_cw| fc_xmm | SEE registers (XMM6-XMM15) | * + * ---------------------------------------------------------------------------------- * + * ---------------------------------------------------------------------------------- * + * | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | * + * ---------------------------------------------------------------------------------- * + * | 0x90 | 0x94 | 0x98 | 0x9c | 0xa0 | 0xa4 | 0xa8 | 0xac | * + * ---------------------------------------------------------------------------------- * + * | SEE registers (XMM6-XMM15) | * + * ---------------------------------------------------------------------------------- * + * ---------------------------------------------------------------------------------- * + * | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | * + * ---------------------------------------------------------------------------------- * + * | 0xb0 | 0xb4 | 0xb8 | 0xbc | 0xc0 | 0xc4 | 0xc8 | 0xcc | * + * ---------------------------------------------------------------------------------- * + * | SEE registers (XMM6-XMM15) | * + * ---------------------------------------------------------------------------------- * + * ---------------------------------------------------------------------------------- * + * | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | * + * ---------------------------------------------------------------------------------- * + * | 0xd0 | 0xd4 | 0xd8 | 0xdc | 0xe0 | 0xe4 | 0xe8 | 0xec | * + * ---------------------------------------------------------------------------------- * + * | SEE registers (XMM6-XMM15) | * + * ---------------------------------------------------------------------------------- * + * ---------------------------------------------------------------------------------- * + * | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | * + * ---------------------------------------------------------------------------------- * + * | 0xf0 | 0xf4 | 0xf8 | 0xfc | 0x100 | 0x104 | 0x108 | 0x10c | * + * ---------------------------------------------------------------------------------- * + * | SEE registers (XMM6-XMM15) | * + * ---------------------------------------------------------------------------------- * + * ---------------------------------------------------------------------------------- * + * | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | * + * ---------------------------------------------------------------------------------- * + * | 0x110 | 0x114 | 0x118 | 0x11c | 0x120 | 0x124 | 0x128 | 0x12c | * + * ---------------------------------------------------------------------------------- * + * | SEE registers (XMM6-XMM15) | * + * ---------------------------------------------------------------------------------- * + * * + * *************************************************************************************/ + +.file "make_x86_64_ms_pe_gas.S" +.text +.p2align 4,,15 +.globl make_fcontext +.def make_fcontext; .scl 2; .type 32; .endef +.seh_proc make_fcontext +make_fcontext: +.seh_endprologue + leaq -0x130(%rcx),%rax /* reserve space for fcontext_t at top of context stack */ + + /* shift address in RAX to lower 16 byte boundary */ + /* == pointer to fcontext_t and address of context stack */ + andq $-16, %rax + + movq %r8, 0x48(%rax) /* save address of context function in fcontext_t */ + movq %rdx, 0x58(%rax) /* save context stack size in fcontext_t */ + movq %rcx, 0x50(%rax) /* save address of context stack pointer (base) in fcontext_t */ + + negq %rdx /* negate stack size for LEA instruction (== substraction) */ + leaq (%rcx,%rdx),%rcx /* compute bottom address of context stack (limit) */ + movq %rcx, 0x60(%rax) /* save bottom address of context stack (limit) in fcontext_t */ + + stmxcsr 0x70(%rax) /* save MMX control and status word */ + fnstcw 0x74(%rax) /* save x87 control word */ + + leaq -0x28(%rax),%rdx /* reserve 32byte shadow space + return address on stack, (RSP - 0x8) % 16 == 0 */ + movq %rdx, 0x40(%rax) /* save address in RDX as stack pointer for context function */ + + leaq finish(%rip),%rcx /* compute abs address of label finish */ + movq %rcx,(%rdx) /* save address of finish as return address for context function */ + /* entered after context function returns */ + + ret + +finish: + /* RSP points to same address as RSP on entry of context function + 0x8 */ + xorq %rcx, %rcx /* exit code is zero */ + call _exit /* exit application */ + hlt +.seh_endproc + +.def _exit; .scl 2; .type 32; .endef /* standard C library function */