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Diffstat (limited to '')
| -rw-r--r-- | src/libs/xpcom18a4/xpcom/reflect/xptcall/src/md/unix/xptcstubs_ppc_linux.cpp | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/xpcom/reflect/xptcall/src/md/unix/xptcstubs_ppc_linux.cpp b/src/libs/xpcom18a4/xpcom/reflect/xptcall/src/md/unix/xptcstubs_ppc_linux.cpp new file mode 100644 index 00000000..b1c98571 --- /dev/null +++ b/src/libs/xpcom18a4/xpcom/reflect/xptcall/src/md/unix/xptcstubs_ppc_linux.cpp @@ -0,0 +1,253 @@ +/* -*- 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) 1999 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * Franz.Sirl-kernel@lauterbach.com (Franz Sirl) + * beard@netscape.com (Patrick Beard) + * waterson@netscape.com (Chris Waterson) + * + * 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 ***** */ + +// Implement shared vtbl methods. + +#include "xptcprivate.h" + +// The Linux/PPC ABI (aka PPC/SYSV ABI) passes the first 8 integral +// parameters and the first 8 floating point parameters in registers +// (r3-r10 and f1-f8), no stack space is allocated for these by the +// caller. The rest of the parameters are passed in the callers stack +// area. The stack pointer has to retain 16-byte alignment, longlongs +// and doubles are aligned on 8-byte boundaries. + +#define PARAM_BUFFER_COUNT 16 +#define GPR_COUNT 8 +#define FPR_COUNT 8 + +// PrepareAndDispatch() is called by SharedStub() and calls the actual method. +// +// - 'args[]' contains the arguments passed on stack +// - 'gprData[]' contains the arguments passed in integer registers +// - 'fprData[]' contains the arguments passed in floating point registers +// +// The parameters are mapped into an array of type 'nsXPTCMiniVariant' +// and then the method gets called. + +extern "C" nsresult +PrepareAndDispatch(nsXPTCStubBase* self, + PRUint32 methodIndex, + PRUint32* args, + PRUint32 *gprData, + double *fprData) +{ + nsXPTCMiniVariant paramBuffer[PARAM_BUFFER_COUNT]; + nsXPTCMiniVariant* dispatchParams = NULL; + nsIInterfaceInfo* iface_info = NULL; + const nsXPTMethodInfo* info; + PRUint32 paramCount; + PRUint32 i; + nsresult result = NS_ERROR_FAILURE; + + NS_ASSERTION(self,"no self"); + + self->GetInterfaceInfo(&iface_info); + NS_ASSERTION(iface_info,"no interface info"); + if (! iface_info) + return NS_ERROR_UNEXPECTED; + + iface_info->GetMethodInfo(PRUint16(methodIndex), &info); + NS_ASSERTION(info,"no method info"); + if (! info) + return NS_ERROR_UNEXPECTED; + + paramCount = info->GetParamCount(); + + // setup variant array pointer + if(paramCount > PARAM_BUFFER_COUNT) + dispatchParams = new nsXPTCMiniVariant[paramCount]; + else + dispatchParams = paramBuffer; + + NS_ASSERTION(dispatchParams,"no place for params"); + if (! dispatchParams) + return NS_ERROR_OUT_OF_MEMORY; + + PRUint32* ap = args; + PRUint32 gpr = 1; // skip one GPR register + PRUint32 fpr = 0; + PRUint32 tempu32; + PRUint64 tempu64; + + for(i = 0; i < paramCount; i++) { + const nsXPTParamInfo& param = info->GetParam(i); + const nsXPTType& type = param.GetType(); + nsXPTCMiniVariant* dp = &dispatchParams[i]; + + if (!param.IsOut() && type == nsXPTType::T_DOUBLE) { + if (fpr < FPR_COUNT) + dp->val.d = fprData[fpr++]; + else { + if ((PRUint32) ap & 4) ap++; // doubles are 8-byte aligned on stack + dp->val.d = *(double*) ap; + ap += 2; + } + continue; + } + else if (!param.IsOut() && type == nsXPTType::T_FLOAT) { + if (fpr < FPR_COUNT) + dp->val.f = (float) fprData[fpr++]; // in registers floats are passed as doubles + else + dp->val.f = *(float*) ap++; + continue; + } + else if (!param.IsOut() && (type == nsXPTType::T_I64 + || type == nsXPTType::T_U64)) { + if (gpr & 1) gpr++; // longlongs are aligned in odd/even register pairs, eg. r5/r6 + if ((gpr + 1) < GPR_COUNT) { + tempu64 = *(PRUint64*) &gprData[gpr]; + gpr += 2; + } + else { + if ((PRUint32) ap & 4) ap++; // longlongs are 8-byte aligned on stack + tempu64 = *(PRUint64*) ap; + ap += 2; + } + } + else { + if (gpr < GPR_COUNT) + tempu32 = gprData[gpr++]; + else + tempu32 = *ap++; + } + + if(param.IsOut() || !type.IsArithmetic()) { + dp->val.p = (void*) tempu32; + continue; + } + + switch(type) { + case nsXPTType::T_I8: dp->val.i8 = (PRInt8) tempu32; break; + case nsXPTType::T_I16: dp->val.i16 = (PRInt16) tempu32; break; + case nsXPTType::T_I32: dp->val.i32 = (PRInt32) tempu32; break; + case nsXPTType::T_I64: dp->val.i64 = (PRInt64) tempu64; break; + case nsXPTType::T_U8: dp->val.u8 = (PRUint8) tempu32; break; + case nsXPTType::T_U16: dp->val.u16 = (PRUint16) tempu32; break; + case nsXPTType::T_U32: dp->val.u32 = (PRUint32) tempu32; break; + case nsXPTType::T_U64: dp->val.u64 = (PRUint64) tempu64; break; + case nsXPTType::T_BOOL: dp->val.b = (PRBool) tempu32; break; + case nsXPTType::T_CHAR: dp->val.c = (char) tempu32; break; + case nsXPTType::T_WCHAR: dp->val.wc = (wchar_t) tempu32; break; + + default: + NS_ASSERTION(0, "bad type"); + break; + } + } + + result = self->CallMethod((PRUint16) methodIndex, info, dispatchParams); + + NS_RELEASE(iface_info); + + if (dispatchParams != paramBuffer) + delete [] dispatchParams; + + return result; +} + +// Load r11 with the constant 'n' and branch to SharedStub(). +// +// XXX Yes, it's ugly that we're relying on gcc's name-mangling here; +// however, it's quick, dirty, and'll break when the ABI changes on +// us, which is what we want ;-). + +#if __GXX_ABI_VERSION < 100 +// gcc-2 version +# define STUB_ENTRY(n) \ +__asm__ ( \ + ".section \".text\" \n\t" \ + ".align 2 \n\t" \ + ".globl Stub"#n"__14nsXPTCStubBase \n\t" \ + ".type Stub"#n"__14nsXPTCStubBase,@function \n\n" \ + \ +"Stub"#n"__14nsXPTCStubBase: \n\t" \ + "li 11,"#n" \n\t" \ + "b SharedStub@local \n" \ +); +#else +// gcc-3 version +// +// As G++3 ABI contains the length of the functionname in the mangled +// name, it is difficult to get a generic assembler mechanism like +// in the G++ 2.95 case. +// Create names would be like: +// _ZN14nsXPTCStubBase5Stub1Ev +// _ZN14nsXPTCStubBase6Stub12Ev +// _ZN14nsXPTCStubBase7Stub123Ev +// _ZN14nsXPTCStubBase8Stub1234Ev +// etc. +// Use assembler directives to get the names right... + +# define STUB_ENTRY(n) \ +__asm__ ( \ + ".align 2 \n\t" \ + ".if "#n" < 10 \n\t" \ + ".globl _ZN14nsXPTCStubBase5Stub"#n"Ev \n\t" \ + ".type _ZN14nsXPTCStubBase5Stub"#n"Ev,@function \n\n" \ +"_ZN14nsXPTCStubBase5Stub"#n"Ev: \n\t" \ + \ + ".elseif "#n" < 100 \n\t" \ + ".globl _ZN14nsXPTCStubBase6Stub"#n"Ev \n\t" \ + ".type _ZN14nsXPTCStubBase6Stub"#n"Ev,@function \n\n" \ +"_ZN14nsXPTCStubBase6Stub"#n"Ev: \n\t" \ + \ + ".elseif "#n" < 1000 \n\t" \ + ".globl _ZN14nsXPTCStubBase7Stub"#n"Ev \n\t" \ + ".type _ZN14nsXPTCStubBase7Stub"#n"Ev,@function \n\n" \ +"_ZN14nsXPTCStubBase7Stub"#n"Ev: \n\t" \ + \ + ".else \n\t" \ + ".err \"stub number "#n" >= 1000 not yet supported\"\n" \ + ".endif \n\t" \ + \ + "li 11,"#n" \n\t" \ + "b SharedStub@local \n" \ +); +#endif + +#define SENTINEL_ENTRY(n) \ +nsresult nsXPTCStubBase::Sentinel##n() \ +{ \ + NS_ASSERTION(0,"nsXPTCStubBase::Sentinel called"); \ + return NS_ERROR_NOT_IMPLEMENTED; \ +} + +#include "xptcstubsdef.inc" |