/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- * * ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is mozilla.org code. * * The Initial Developer of the Original Code is * Netscape Communications Corporation. * Portions created by the Initial Developer are Copyright (C) 1998 * the Initial Developer. All Rights Reserved. * * Contributor(s): * * Alternatively, the contents of this file may be used under the terms of * either of the GNU General Public License Version 2 or later (the "GPL"), * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */ /* Platform specific code to invoke XPCOM methods on native objects */ #include "xptcprivate.h" static PRUint32 invoke_count_words(PRUint32 paramCount, nsXPTCVariant* s) { PRUint32 overflow = 0, gpr = 1 /*this*/, fpr = 0; for(PRUint32 i = 0; i < paramCount; i++, s++) { if(s->IsPtrData()) { if (gpr < 5) gpr++; else overflow++; continue; } switch(s->type) { case nsXPTType::T_I8 : case nsXPTType::T_I16 : case nsXPTType::T_I32 : case nsXPTType::T_I64 : if (gpr < 5) gpr++; else overflow++; break; case nsXPTType::T_U8 : case nsXPTType::T_U16 : case nsXPTType::T_U32 : case nsXPTType::T_U64 : if (gpr < 5) gpr++; else overflow++; break; case nsXPTType::T_FLOAT : case nsXPTType::T_DOUBLE : if (fpr < 4) fpr++; else overflow++; break; case nsXPTType::T_BOOL : case nsXPTType::T_CHAR : case nsXPTType::T_WCHAR : if (gpr < 5) gpr++; else overflow++; break; default: // all the others are plain pointer types if (gpr < 5) gpr++; else overflow++; break; } } /* Round up number of overflow words to ensure stack stays aligned to 8 bytes. */ return (overflow + 1) & ~1; } static void invoke_copy_to_stack(PRUint32 paramCount, nsXPTCVariant* s, PRUint64* d_ov, PRUint32 overflow) { PRUint64 *d_gpr = d_ov + overflow; PRUint64 *d_fpr = (PRUint64 *)(d_gpr + 4); PRUint32 gpr = 1 /*this*/, fpr = 0; for(PRUint32 i = 0; i < paramCount; i++, s++) { if(s->IsPtrData()) { if (gpr < 5) *((void**)d_gpr) = s->ptr, d_gpr++, gpr++; else *((void**)d_ov ) = s->ptr, d_ov++; continue; } switch(s->type) { case nsXPTType::T_I8 : if (gpr < 5) *((PRInt64*) d_gpr) = s->val.i8, d_gpr++, gpr++; else *((PRInt64*) d_ov ) = s->val.i8, d_ov++; break; case nsXPTType::T_I16 : if (gpr < 5) *((PRInt64*) d_gpr) = s->val.i16, d_gpr++, gpr++; else *((PRInt64*) d_ov ) = s->val.i16, d_ov++; break; case nsXPTType::T_I32 : if (gpr < 5) *((PRInt64*) d_gpr) = s->val.i32, d_gpr++, gpr++; else *((PRInt64*) d_ov ) = s->val.i32, d_ov++; break; case nsXPTType::T_I64 : if (gpr < 5) *((PRInt64*) d_gpr) = s->val.i64, d_gpr++, gpr++; else *((PRInt64*) d_ov ) = s->val.i64, d_ov++; break; case nsXPTType::T_U8 : if (gpr < 5) *((PRUint64*) d_gpr) = s->val.u8, d_gpr++, gpr++; else *((PRUint64*) d_ov ) = s->val.u8, d_ov++; break; case nsXPTType::T_U16 : if (gpr < 5) *((PRUint64*)d_gpr) = s->val.u16, d_gpr++, gpr++; else *((PRUint64*)d_ov ) = s->val.u16, d_ov++; break; case nsXPTType::T_U32 : if (gpr < 5) *((PRUint64*)d_gpr) = s->val.u32, d_gpr++, gpr++; else *((PRUint64*)d_ov ) = s->val.u32, d_ov++; break; case nsXPTType::T_U64 : if (gpr < 5) *((PRUint64*)d_gpr) = s->val.u64, d_gpr++, gpr++; else *((PRUint64*)d_ov ) = s->val.u64, d_ov++; break; case nsXPTType::T_FLOAT : if (fpr < 4) *((float*) d_fpr) = s->val.f, d_fpr++, fpr++; else *(((float*) d_ov )+1) = s->val.f, d_ov++; break; case nsXPTType::T_DOUBLE : if (fpr < 4) *((double*) d_fpr) = s->val.d, d_fpr++, fpr++; else *((double*) d_ov ) = s->val.d, d_ov++; break; case nsXPTType::T_BOOL : if (gpr < 5) *((PRUint64*)d_gpr) = s->val.b, d_gpr++, gpr++; else *((PRUint64*)d_ov ) = s->val.b, d_ov++; break; case nsXPTType::T_CHAR : if (gpr < 5) *((PRUint64*)d_gpr) = s->val.c, d_gpr++, gpr++; else *((PRUint64*)d_ov ) = s->val.c, d_ov++; break; case nsXPTType::T_WCHAR : if (gpr < 5) *((PRUint64*)d_gpr) = s->val.wc, d_gpr++, gpr++; else *((PRUint64*)d_ov ) = s->val.wc, d_ov++; break; default: // all the others are plain pointer types if (gpr < 5) *((void**) d_gpr) = s->val.p, d_gpr++, gpr++; else *((void**) d_ov ) = s->val.p, d_ov++; break; } } } XPTC_PUBLIC_API(nsresult) XPTC_InvokeByIndex(nsISupports* that, PRUint32 methodIndex, PRUint32 paramCount, nsXPTCVariant* params) { PRUint64 *vtable = *(PRUint64 **)that; #if defined(__GXX_ABI_VERSION) && __GXX_ABI_VERSION >= 100 /* G++ V3 ABI */ PRUint64 method = vtable[methodIndex]; #else /* not G++ V3 ABI */ PRUint64 method = vtable[methodIndex + 2]; #endif /* G++ V3 ABI */ PRUint64 overflow = invoke_count_words (paramCount, params); PRUint64 result; __asm__ __volatile__ ( "lgr 7,15\n\t" "aghi 7,-64\n\t" "lgr 3,%3\n\t" "sllg 3,3,3\n\t" "lcgr 3,3\n\t" "lg 2,0(15)\n\t" "la 15,0(3,7)\n\t" "stg 2,0(15)\n\t" "lgr 2,%1\n\t" "lgr 3,%2\n\t" "la 4,160(15)\n\t" "lgr 5,%3\n\t" "basr 14,%4\n\t" "lgr 2,%5\n\t" "ld 0,192(7)\n\t" "ld 2,200(7)\n\t" "ld 4,208(7)\n\t" "ld 6,216(7)\n\t" "lmg 3,6,160(7)\n\t" "basr 14,%6\n\t" "la 15,64(7)\n\t" "lgr %0,2\n\t" : "=r" (result) : "r" ((PRUint64)paramCount), "r" (params), "r" (overflow), "a" (invoke_copy_to_stack), "a" (that), "a" (method) : "2", "3", "4", "5", "6", "7", "memory" ); return result; }