projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | /* |
| 2 | Copyright Oliver Kowalke 2009. | |
| 3 | Copyright Thomas Sailer 2013. | |
| 4 | Distributed under the Boost Software License, Version 1.0. | |
| 5 | (See accompanying file LICENSE_1_0.txt or copy at | |
| 6 | http://www.boost.org/LICENSE_1_0.txt) | |
| 7 | */ | |
| 8 | ||
| 9 | /************************************************************************************* | |
| 10 | * --------------------------------------------------------------------------------- * | |
| 11 | * | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | * | |
| 12 | * --------------------------------------------------------------------------------- * | |
| 13 | * | 0h | 04h | 08h | 0ch | 010h | 014h | 018h | 01ch | * | |
| 14 | * --------------------------------------------------------------------------------- * | |
| b32b8144 | 15 | * | fc_mxcsr|fc_x87_cw| fc_strg |fc_deallo| limit | base | fc_seh | EDI | * |
| 7c673cae FG |
16 | * --------------------------------------------------------------------------------- * |
| 17 | * --------------------------------------------------------------------------------- * | |
| 18 | * | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | * | |
| 19 | * --------------------------------------------------------------------------------- * | |
| 20 | * | 020h | 024h | 028h | 02ch | 030h | 034h | 038h | 03ch | * | |
| 21 | * --------------------------------------------------------------------------------- * | |
| b32b8144 | 22 | * | ESI | EBX | EBP | EIP | to | data | EH NXT |SEH HNDLR| * |
| 7c673cae | 23 | * --------------------------------------------------------------------------------- * |
| b32b8144 | 24 | **************************************************************************************/ |
| 7c673cae FG |
25 | |
| 26 | .file "ontop_i386_ms_pe_gas.asm" | |
| 27 | .text | |
| 28 | .p2align 4,,15 | |
| 29 | .globl _ontop_fcontext | |
| 30 | .def _ontop_fcontext; .scl 2; .type 32; .endef | |
| 31 | _ontop_fcontext: | |
| b32b8144 FG |
32 | /* prepare stack */ |
| 33 | leal -0x2c(%esp), %esp | |
| 34 | ||
| 35 | #if !defined(BOOST_USE_TSX) | |
| 36 | /* save MMX control- and status-word */ | |
| 37 | stmxcsr (%esp) | |
| 38 | /* save x87 control-word */ | |
| 39 | fnstcw 0x4(%esp) | |
| 40 | #endif | |
| 7c673cae FG |
41 | |
| 42 | /* load NT_TIB */ | |
| 43 | movl %fs:(0x18), %edx | |
| b32b8144 FG |
44 | /* load fiber local storage */ |
| 45 | movl 0x10(%edx), %eax | |
| 46 | movl %eax, 0x8(%esp) | |
| 47 | /* load current dealloction stack */ | |
| 48 | movl 0xe0c(%edx), %eax | |
| 49 | movl %eax, 0xc(%esp) | |
| 50 | /* load current stack limit */ | |
| 51 | movl 0x8(%edx), %eax | |
| 52 | movl %eax, 0x10(%esp) | |
| 53 | /* load current stack base */ | |
| 54 | movl 0x4(%edx), %eax | |
| 55 | movl %eax, 0x14(%esp) | |
| 7c673cae FG |
56 | /* load current SEH exception list */ |
| 57 | movl (%edx), %eax | |
| b32b8144 | 58 | movl %eax, 0x18(%esp) |
| 7c673cae | 59 | |
| b32b8144 FG |
60 | movl %edi, 0x1c(%esp) /* save EDI */ |
| 61 | movl %esi, 0x20(%esp) /* save ESI */ | |
| 62 | movl %ebx, 0x24(%esp) /* save EBX */ | |
| 63 | movl %ebp, 0x28(%esp) /* save EBP */ | |
| 7c673cae | 64 | |
| b32b8144 | 65 | /* store ESP (pointing to context-data) in ECX */ |
| 7c673cae FG |
66 | movl %esp, %ecx |
| 67 | ||
| 68 | /* first arg of ontop_fcontext() == fcontext to jump to */ | |
| b32b8144 | 69 | movl 0x30(%esp), %eax |
| 7c673cae FG |
70 | |
| 71 | /* pass parent fcontext_t */ | |
| b32b8144 | 72 | movl %ecx, 0x30(%eax) |
| 7c673cae FG |
73 | |
| 74 | /* second arg of ontop_fcontext() == data to be transferred */ | |
| b32b8144 | 75 | movl 0x34(%esp), %ecx |
| 7c673cae FG |
76 | |
| 77 | /* pass data */ | |
| b32b8144 | 78 | movl %ecx, 0x34(%eax) |
| 7c673cae FG |
79 | |
| 80 | /* third arg of ontop_fcontext() == ontop-function */ | |
| b32b8144 | 81 | movl 0x38(%esp), %ecx |
| 7c673cae FG |
82 | |
| 83 | /* restore ESP (pointing to context-data) from EDX */ | |
| 84 | movl %eax, %esp | |
| 85 | ||
| b32b8144 FG |
86 | #if !defined(BOOST_USE_TSX) |
| 87 | /* restore MMX control- and status-word */ | |
| 88 | ldmxcsr (%esp) | |
| 89 | /* restore x87 control-word */ | |
| 90 | fldcw 0x4(%esp) | |
| 91 | #endif | |
| 7c673cae | 92 | |
| b32b8144 FG |
93 | /* restore NT_TIB into EDX */ |
| 94 | movl %fs:(0x18), %edx | |
| 7c673cae | 95 | /* restore fiber local storage */ |
| b32b8144 | 96 | movl 0x8(%esp), %eax |
| 7c673cae | 97 | movl %eax, 0x10(%edx) |
| 7c673cae | 98 | /* restore current deallocation stack */ |
| b32b8144 | 99 | movl 0xc(%esp), %eax |
| 7c673cae | 100 | movl %eax, 0xe0c(%edx) |
| 7c673cae | 101 | /* restore current stack limit */ |
| b32b8144 | 102 | movl 0x10(%esp), %eax |
| 7c673cae | 103 | movl %eax, 0x08(%edx) |
| 7c673cae | 104 | /* restore current stack base */ |
| b32b8144 | 105 | movl 0x14(%esp), %eax |
| 7c673cae | 106 | movl %eax, 0x04(%edx) |
| 7c673cae | 107 | /* restore current SEH exception list */ |
| b32b8144 | 108 | movl 0x18(%esp), %eax |
| 7c673cae FG |
109 | movl %eax, (%edx) |
| 110 | ||
| b32b8144 FG |
111 | movl 0x1c(%esp), %edi /* restore EDI */ |
| 112 | movl 0x20(%esp), %esi /* restore ESI */ | |
| 113 | movl 0x24(%esp), %ebx /* restore EBX */ | |
| 114 | movl 0x28(%esp), %ebp /* restore EBP */ | |
| 115 | ||
| 116 | /* prepare stack */ | |
| 117 | leal 0x2c(%esp), %esp | |
| 118 | ||
| 119 | /* keep return-address on stack */ | |
| 7c673cae FG |
120 | |
| 121 | /* jump to context */ | |
| 122 | jmp *%ecx | |
| 123 | ||
| 124 | .section .drectve | |
| 125 | .ascii " -export:\"ontop_fcontext\"" |