Mercurial > trustbridge > nss-cmake-static
annotate nspr/pr/src/md/windows/ntgc.c @ 0:1e5118fa0cb1
This is NSS with a Cmake Buildsyste
To compile a static NSS library for Windows we've used the
Chromium-NSS fork and added a Cmake buildsystem to compile
it statically for Windows. See README.chromium for chromium
changes and README.trustbridge for our modifications.
author | Andre Heinecke <andre.heinecke@intevation.de> |
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date | Mon, 28 Jul 2014 10:47:06 +0200 |
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rev | line source |
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0
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1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
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2 /* This Source Code Form is subject to the terms of the Mozilla Public |
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3 * License, v. 2.0. If a copy of the MPL was not distributed with this |
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4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
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5 |
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6 /* |
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7 * GC related routines |
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8 * |
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9 */ |
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10 #include <windows.h> |
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11 #include "primpl.h" |
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12 |
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13 PRWord *_MD_HomeGCRegisters(PRThread *t, int isCurrent, int *np) |
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14 { |
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15 #if defined(_X86_) |
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16 CONTEXT context; |
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17 context.ContextFlags = CONTEXT_INTEGER; |
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18 |
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19 if (_PR_IS_NATIVE_THREAD(t)) { |
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20 context.ContextFlags |= CONTEXT_CONTROL; |
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21 if (GetThreadContext(t->md.handle, &context)) { |
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22 t->md.gcContext[0] = context.Eax; |
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23 t->md.gcContext[1] = context.Ebx; |
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24 t->md.gcContext[2] = context.Ecx; |
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25 t->md.gcContext[3] = context.Edx; |
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26 t->md.gcContext[4] = context.Esi; |
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27 t->md.gcContext[5] = context.Edi; |
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28 t->md.gcContext[6] = context.Esp; |
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29 t->md.gcContext[7] = context.Ebp; |
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30 *np = PR_NUM_GCREGS; |
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31 } else { |
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32 PR_ASSERT(0);/* XXX */ |
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33 } |
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34 } else { |
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35 /* WARNING WARNING WARNING WARNING WARNING WARNING WARNING |
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36 * |
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37 * This code is extremely machine dependant and completely |
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38 * undocumented by MS. Its only known to work experimentally. |
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39 * Ready for a walk on the wild * side? |
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40 * |
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41 * WARNING WARNING WARNING WARNING WARNING WARNING WARNING */ |
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42 |
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43 #if !defined WIN95 // Win95 does not have fibers |
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44 int *fiberData = t->md.fiber_id; |
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45 |
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46 /* I found these offsets by disassembling SwitchToFiber(). |
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47 * Are your palms sweating yet? |
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48 */ |
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49 |
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50 /* |
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51 ** EAX is on the stack (ESP+0) |
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52 ** EDX is on the stack (ESP+4) |
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53 ** ECX is on the stack (ESP+8) |
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54 */ |
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55 t->md.gcContext[0] = 0; /* context.Eax */ |
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56 t->md.gcContext[1] = fiberData[0x2e]; /* context.Ebx */ |
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57 t->md.gcContext[2] = 0; /* context.Ecx */ |
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58 t->md.gcContext[3] = 0; /* context.Edx */ |
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59 t->md.gcContext[4] = fiberData[0x2d]; /* context.Esi */ |
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60 t->md.gcContext[5] = fiberData[0x2c]; /* context.Edi */ |
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61 t->md.gcContext[6] = fiberData[0x36]; /* context.Esp */ |
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62 t->md.gcContext[7] = fiberData[0x32]; /* context.Ebp */ |
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63 *np = PR_NUM_GCREGS; |
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64 #endif |
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65 } |
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66 return (PRWord *)&t->md.gcContext; |
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67 #else |
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68 PR_NOT_REACHED("not implemented"); |
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69 return NULL; |
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70 #endif /* defined(_X86_) */ |
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71 } |
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72 |
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73 /* This function is not used right now, but is left as a reference. |
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74 * If you ever need to get the fiberID from the currently running fiber, |
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75 * this is it. |
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76 */ |
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77 void * |
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78 GetMyFiberID() |
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79 { |
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80 #if defined(_X86_) && !defined(__MINGW32__) |
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81 void *fiberData; |
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82 |
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83 /* A pointer to our tib entry is found at FS:[18] |
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84 * At offset 10h is the fiberData pointer. The context of the |
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85 * fiber is stored in there. |
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86 */ |
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87 __asm { |
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88 mov EDX, FS:[18h] |
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89 mov EAX, DWORD PTR [EDX+10h] |
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90 mov [fiberData], EAX |
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91 } |
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92 |
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93 return fiberData; |
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94 #else |
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95 PR_NOT_REACHED("not implemented"); |
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96 return NULL; |
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97 #endif /* defined(_X86_) */ |
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98 } |