michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0:  *
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: 
michael@0: /* Platform specific code to invoke XPCOM methods on native objects */
michael@0: 
michael@0: #include "xptcprivate.h"
michael@0: 
michael@0: #if !defined(__sparc) && !defined(__sparc__)
michael@0: #error "This code is for Sparc only"
michael@0: #endif
michael@0: 
michael@0: /* Prototype specifies unmangled function name */
michael@0: extern "C" uint64_t
michael@0: invoke_copy_to_stack(uint64_t* d, uint32_t paramCount, nsXPTCVariant* s);
michael@0: 
michael@0: extern "C" uint64_t
michael@0: invoke_copy_to_stack(uint64_t* d, uint32_t paramCount, nsXPTCVariant* s)
michael@0: {
michael@0:   /*
michael@0:     We need to copy the parameters for this function to locals and use them
michael@0:     from there since the parameters occupy the same stack space as the stack
michael@0:     we're trying to populate.
michael@0:   */
michael@0:   uint64_t *l_d = d;
michael@0:   nsXPTCVariant *l_s = s;
michael@0:   uint64_t l_paramCount = paramCount;
michael@0:   uint64_t regCount = 0;  // return the number of registers to load from the stack
michael@0: 
michael@0:   for(uint64_t i = 0; i < l_paramCount; i++, l_d++, l_s++)
michael@0:   {
michael@0:     if (regCount < 5) regCount++;
michael@0: 
michael@0:     if (l_s->IsPtrData())
michael@0:     {
michael@0:       *l_d = (uint64_t)l_s->ptr;
michael@0:       continue;
michael@0:     }
michael@0:     switch (l_s->type)
michael@0:     {
michael@0:       case nsXPTType::T_I8    : *((int64_t*)l_d)     = l_s->val.i8;    break;
michael@0:       case nsXPTType::T_I16   : *((int64_t*)l_d)     = l_s->val.i16;   break;
michael@0:       case nsXPTType::T_I32   : *((int64_t*)l_d)     = l_s->val.i32;   break;
michael@0:       case nsXPTType::T_I64   : *((int64_t*)l_d)     = l_s->val.i64;   break;
michael@0:       
michael@0:       case nsXPTType::T_U8    : *((uint64_t*)l_d)    = l_s->val.u8;    break;
michael@0:       case nsXPTType::T_U16   : *((uint64_t*)l_d)    = l_s->val.u16;   break;
michael@0:       case nsXPTType::T_U32   : *((uint64_t*)l_d)    = l_s->val.u32;   break;
michael@0:       case nsXPTType::T_U64   : *((uint64_t*)l_d)    = l_s->val.u64;   break;
michael@0: 
michael@0:       /* in the case of floats, we want to put the bits in to the
michael@0:          64bit space right justified... floats in the parameter array on
michael@0:          sparcv9 use odd numbered registers.. %f1, %f3, so we have to skip
michael@0:          the space that would be occupied by %f0, %f2, etc.
michael@0:       */
michael@0:       case nsXPTType::T_FLOAT : *(((float*)l_d) + 1) = l_s->val.f;     break;
michael@0:       case nsXPTType::T_DOUBLE: *((double*)l_d)      = l_s->val.d;     break;
michael@0:       case nsXPTType::T_BOOL  : *((uint64_t*)l_d)    = l_s->val.b;     break;
michael@0:       case nsXPTType::T_CHAR  : *((uint64_t*)l_d)    = l_s->val.c;     break;
michael@0:       case nsXPTType::T_WCHAR : *((int64_t*)l_d)     = l_s->val.wc;    break;
michael@0: 
michael@0:       default:
michael@0:         // all the others are plain pointer types
michael@0:         *((void**)l_d) = l_s->val.p;
michael@0:         break;
michael@0:     }
michael@0:   }
michael@0:   
michael@0:   return regCount;
michael@0: }