Delete bundled copy of NSS and replace with README.

nspr/pr/src/md/windows/ntgc.c

-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-/*
- * GC related routines
- *
- */
-#include <windows.h>
-#include "primpl.h"
-
-PRWord *_MD_HomeGCRegisters(PRThread *t, int isCurrent, int *np) 
-{
-#if defined(_X86_)
-    CONTEXT context;
-    context.ContextFlags = CONTEXT_INTEGER;
-
-    if (_PR_IS_NATIVE_THREAD(t)) {
-        context.ContextFlags |= CONTEXT_CONTROL;
-        if (GetThreadContext(t->md.handle, &context)) {
-            t->md.gcContext[0] = context.Eax;
-            t->md.gcContext[1] = context.Ebx;
-            t->md.gcContext[2] = context.Ecx;
-            t->md.gcContext[3] = context.Edx;
-            t->md.gcContext[4] = context.Esi;
-            t->md.gcContext[5] = context.Edi;
-            t->md.gcContext[6] = context.Esp;
-            t->md.gcContext[7] = context.Ebp;
-            *np = PR_NUM_GCREGS;
-        } else {
-            PR_ASSERT(0);/* XXX */
-        }
-    } else {
-        /* WARNING WARNING WARNING WARNING WARNING WARNING WARNING
-         *
-         * This code is extremely machine dependant and completely 
-         * undocumented by MS.  Its only known to work experimentally.  
-         * Ready for a walk on the wild * side?
-         *
-         * WARNING WARNING WARNING WARNING WARNING WARNING WARNING */
-
-#if !defined WIN95 // Win95 does not have fibers
-        int *fiberData = t->md.fiber_id;
-
-        /* I found these offsets by disassembling SwitchToFiber().
-         * Are your palms sweating yet?
-         */
-
-        /* 
-        ** EAX is on the stack (ESP+0)
-        ** EDX is on the stack (ESP+4)
-        ** ECX is on the stack (ESP+8)
-        */
-        t->md.gcContext[0] = 0;                /* context.Eax */
-        t->md.gcContext[1] = fiberData[0x2e];  /* context.Ebx */
-        t->md.gcContext[2] = 0;                /* context.Ecx */
-        t->md.gcContext[3] = 0;                /* context.Edx */
-        t->md.gcContext[4] = fiberData[0x2d];  /* context.Esi */
-        t->md.gcContext[5] = fiberData[0x2c];  /* context.Edi */
-        t->md.gcContext[6] = fiberData[0x36];  /* context.Esp */
-        t->md.gcContext[7] = fiberData[0x32];  /* context.Ebp */
-        *np = PR_NUM_GCREGS;
-#endif
-    }
-    return (PRWord *)&t->md.gcContext;
-#else
-    PR_NOT_REACHED("not implemented");
-    return NULL;
-#endif /* defined(_X86_) */
-}
-
-/* This function is not used right now, but is left as a reference.
- * If you ever need to get the fiberID from the currently running fiber, 
- * this is it.
- */
-void *
-GetMyFiberID()
-{
-#if defined(_X86_) && !defined(__MINGW32__)
-    void *fiberData;
-
-    /* A pointer to our tib entry is found at FS:[18]
-     * At offset 10h is the fiberData pointer.  The context of the 
-     * fiber is stored in there.  
-     */
-    __asm {
-        mov    EDX, FS:[18h]
-        mov    EAX, DWORD PTR [EDX+10h]
-        mov    [fiberData], EAX
-    }
-  
-    return fiberData;
-#else
-    PR_NOT_REACHED("not implemented");
-    return NULL;
-#endif /* defined(_X86_) */
-}