ceph/src/boost/libs/context/src/asm/make_x86_64_ms_pe_masm.asm

   1
   2 ;           Copyright Oliver Kowalke 2009.
   3 ;  Distributed under the Boost Software License, Version 1.0.
   4 ;     (See accompanying file LICENSE_1_0.txt or copy at
   5 ;           http://www.boost.org/LICENSE_1_0.txt)
   6
   7 ;  ----------------------------------------------------------------------------------
   8 ;  |     0   |     1   |     2    |     3   |     4   |     5   |     6   |     7   |
   9 ;  ----------------------------------------------------------------------------------
  10 ;  |    0x0  |    0x4  |    0x8   |    0xc  |   0x10  |   0x14  |   0x18  |   0x1c  |
  11 ;  ----------------------------------------------------------------------------------
  12 ;  |                          SEE registers (XMM6-XMM15)                            |
  13 ;  ----------------------------------------------------------------------------------
  14 ;  ----------------------------------------------------------------------------------
  15 ;  |     8   |    9    |    10    |    11   |    12   |    13   |    14   |    15   |
  16 ;  ----------------------------------------------------------------------------------
  17 ;  |   0x20  |  0x24   |   0x28   |   0x2c  |   0x30  |   0x34  |   0x38  |   0x3c  |
  18 ;  ----------------------------------------------------------------------------------
  19 ;  |                          SEE registers (XMM6-XMM15)                            |
  20 ;  ----------------------------------------------------------------------------------
  21 ;  ----------------------------------------------------------------------------------
  22 ;  |    16   |    17   |    18   |    19    |    20   |    21   |    22   |    23   |
  23 ;  ----------------------------------------------------------------------------------
  24 ;  |   0xe40  |   0x44 |   0x48  |   0x4c   |   0x50  |   0x54  |   0x58  |   0x5c  |
  25 ;  ----------------------------------------------------------------------------------
  26 ;  |                          SEE registers (XMM6-XMM15)                            |
  27 ;  ----------------------------------------------------------------------------------
  28 ;  ----------------------------------------------------------------------------------
  29 ;  |    24   |   25    |    26    |   27    |    28   |    29   |    30   |    31   |
  30 ;  ----------------------------------------------------------------------------------
  31 ;  |   0x60  |   0x64  |   0x68   |   0x6c  |   0x70  |   0x74  |   0x78  |   0x7c  |
  32 ;  ----------------------------------------------------------------------------------
  33 ;  |                          SEE registers (XMM6-XMM15)                            |
  34 ;  ----------------------------------------------------------------------------------
  35 ;  ----------------------------------------------------------------------------------
  36 ;  |    32   |   32    |    33    |   34    |    35   |    36   |    37   |    38   |
  37 ;  ----------------------------------------------------------------------------------
  38 ;  |   0x80  |   0x84  |   0x88   |   0x8c  |   0x90  |   0x94  |   0x98  |   0x9c  |
  39 ;  ----------------------------------------------------------------------------------
  40 ;  |                          SEE registers (XMM6-XMM15)                            |
  41 ;  ----------------------------------------------------------------------------------
  42 ;  ----------------------------------------------------------------------------------
  43 ;  |    39   |   40    |    41    |   42    |    43   |    44   |    45   |    46   |
  44 ;  ----------------------------------------------------------------------------------
  45 ;  |   0xa0  |   0xa4  |   0xa8   |   0xac  |   0xb0  |   0xb4  |   0xb8  |   0xbc  |
  46 ;  ----------------------------------------------------------------------------------
  47 ;  | fc_mxcsr|fc_x87_cw|     <alignment>    |       fbr_strg    |      fc_dealloc   |
  48 ;  ----------------------------------------------------------------------------------
  49 ;  ----------------------------------------------------------------------------------
  50 ;  |    47   |   48    |    49    |   50    |    51   |    52   |    53   |    54   |
  51 ;  ----------------------------------------------------------------------------------
  52 ;  |   0xc0  |   0xc4  |   0xc8   |   0xcc  |   0xd0  |   0xd4  |   0xd8  |   0xdc  |
  53 ;  ----------------------------------------------------------------------------------
  54 ;  |        limit      |         base       |         R12       |         R13       |
  55 ;  ----------------------------------------------------------------------------------
  56 ;  ----------------------------------------------------------------------------------
  57 ;  |    55   |   56    |    57    |   58    |    59   |    60   |    61   |    62   |
  58 ;  ----------------------------------------------------------------------------------
  59 ;  |   0xe0  |   0xe4  |   0xe8   |   0xec  |   0xf0  |   0xf4  |   0xf8  |   0xfc  |
  60 ;  ----------------------------------------------------------------------------------
  61 ;  |        R14        |         R15        |         RDI       |        RSI        |
  62 ;  ----------------------------------------------------------------------------------
  63 ;  ----------------------------------------------------------------------------------
  64 ;  |    63   |   64    |    65    |   66    |    67   |    68   |    69   |    70   |
  65 ;  ----------------------------------------------------------------------------------
  66 ;  |  0x100  |  0x104  |  0x108   |  0x10c  |  0x110  |  0x114  |  0x118  |  0x11c  |
  67 ;  ----------------------------------------------------------------------------------
  68 ;  |        RBX        |         RBP        |       hidden      |        RIP        |
  69 ;  ----------------------------------------------------------------------------------
  70 ;  ----------------------------------------------------------------------------------
  71 ;  |    71   |   72    |    73    |   74    |    75   |    76   |    77   |    78   |
  72 ;  ----------------------------------------------------------------------------------
  73 ;  |  0x120  |  0x124  |  0x128   |  0x12c  |  0x130  |  0x134  |  0x138  |  0x13c  |
  74 ;  ----------------------------------------------------------------------------------
  75 ;  |                                   parameter area                               |
  76 ;  ----------------------------------------------------------------------------------
  77 ;  ----------------------------------------------------------------------------------
  78 ;  |    79   |   80    |    81    |   82    |    83   |    84   |    85   |    86   |
  79 ;  ----------------------------------------------------------------------------------
  80 ;  |  0x140  |  0x144  |  0x148   |  0x14c  |  0x150  |  0x154  |  0x158  |  0x15c  |
  81 ;  ----------------------------------------------------------------------------------
  82 ;  |       FCTX        |        DATA        |                                       |
  83 ;  ----------------------------------------------------------------------------------
  84
  85 ; standard C library function
  86 EXTERN  _exit:PROC
  87 .code
  88
  89 ; generate function table entry in .pdata and unwind information in
  90 make_fcontext PROC BOOST_CONTEXT_EXPORT FRAME
  91     ; .xdata for a function's structured exception handling unwind behavior
  92     .endprolog
  93
  94     ; first arg of make_fcontext() == top of context-stack
  95     mov  rax, rcx
  96
  97     ; shift address in RAX to lower 16 byte boundary
  98     ; == pointer to fcontext_t and address of context stack
  99     and  rax, -16
 100
 101     ; reserve space for context-data on context-stack
 102     ; on context-function entry: (RSP -0x8) % 16 == 0
 103     sub  rax, 0150h
 104
 105     ; third arg of make_fcontext() == address of context-function
 106     ; stored in RBX
 107     mov  [rax+0100h], r8
 108
 109     ; first arg of make_fcontext() == top of context-stack
 110     ; save top address of context stack as 'base'
 111     mov  [rax+0c8h], rcx
 112     ; second arg of make_fcontext() == size of context-stack
 113     ; negate stack size for LEA instruction (== substraction)
 114     neg  rdx
 115     ; compute bottom address of context stack (limit)
 116     lea  rcx, [rcx+rdx]
 117     ; save bottom address of context stack as 'limit'
 118     mov  [rax+0c0h], rcx
 119     ; save address of context stack limit as 'dealloction stack'
 120     mov  [rax+0b8h], rcx
 121         ; set fiber-storage to zero
 122         xor  rcx, rcx
 123     mov  [rax+0b0h], rcx
 124
 125         ; save MMX control- and status-word
 126     stmxcsr  [rax+0a0h]
 127     ; save x87 control-word
 128     fnstcw  [rax+0a4h]
 129
 130     ; compute address of transport_t
 131     lea rcx, [rax+0140h]
 132     ; store address of transport_t in hidden field
 133     mov [rax+0110h], rcx
 134
 135     ; compute abs address of label trampoline
 136     lea  rcx, trampoline
 137     ; save address of trampoline as return-address for context-function
 138     ; will be entered after calling jump_fcontext() first time
 139     mov  [rax+0118h], rcx
 140
 141     ; compute abs address of label finish
 142     lea  rcx, finish
 143     ; save address of finish as return-address for context-function in RBP
 144     ; will be entered after context-function returns
 145     mov  [rax+0108h], rcx
 146
 147     ret ; return pointer to context-data
 148
 149 trampoline:
 150     ; store return address on stack
 151     ; fix stack alignment
 152     push rbp
 153     ; jump to context-function
 154     jmp rbx
 155
 156 finish:
 157     ; exit code is zero
 158     xor  rcx, rcx
 159     ; exit application
 160     call  _exit
 161     hlt
 162 make_fcontext ENDP
 163 END