michael@0: /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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: /* Platform specific code to invoke XPCOM methods on native objects */
michael@0: 
michael@0: #include "xptcprivate.h"
michael@0: 
michael@0: /* solaris defines __sparc for workshop compilers and 
michael@0:    linux defines __sparc__ */
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: typedef unsigned nsXPCVariant;
michael@0: 
michael@0: extern "C" uint32_t
michael@0: invoke_count_words(uint32_t paramCount, nsXPTCVariant* s)
michael@0: {
michael@0:     uint32_t result = 0;
michael@0:     for(uint32_t i = 0; i < paramCount; i++, s++)
michael@0:     {
michael@0:         if(s->IsPtrData())
michael@0:         {
michael@0:             result++;
michael@0:             continue;
michael@0:         }
michael@0:         switch(s->type)
michael@0:         {
michael@0:         case nsXPTType::T_I8     :
michael@0:         case nsXPTType::T_I16    :
michael@0:         case nsXPTType::T_I32    :
michael@0:             result++;
michael@0:             break;
michael@0:         case nsXPTType::T_I64    :
michael@0:             result+=2;
michael@0:             break;
michael@0:         case nsXPTType::T_U8     :
michael@0:         case nsXPTType::T_U16    :
michael@0:         case nsXPTType::T_U32    :
michael@0:             result++;
michael@0:             break;
michael@0:         case nsXPTType::T_U64    :
michael@0:             result+=2;
michael@0:             break;
michael@0:         case nsXPTType::T_FLOAT  :
michael@0:             result++;
michael@0:             break;
michael@0:         case nsXPTType::T_DOUBLE :
michael@0:             result+=2;
michael@0:             break;
michael@0:         case nsXPTType::T_BOOL   :
michael@0:         case nsXPTType::T_CHAR   :
michael@0:         case nsXPTType::T_WCHAR  :
michael@0:             result++;
michael@0:             break;
michael@0:         default:
michael@0:             // all the others are plain pointer types
michael@0:             result++;
michael@0:             break;
michael@0:         }
michael@0:     }
michael@0:     // nuts, I know there's a cooler way of doing this, but it's late
michael@0:     // now and it'll probably come to me in the morning.
michael@0:     if (result & 0x3) result += 4 - (result & 0x3);     // ensure q-word alignment
michael@0:     return result;
michael@0: }
michael@0: 
michael@0: extern "C" uint32_t
michael@0: invoke_copy_to_stack(uint32_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:     uint32_t *l_d = d;
michael@0:     nsXPTCVariant *l_s = s;
michael@0:     uint32_t l_paramCount = paramCount;
michael@0:     uint32_t regCount = 0;	// return the number of registers to load from the stack
michael@0: 
michael@0:     typedef struct {
michael@0:         uint32_t hi;
michael@0:         uint32_t lo;
michael@0:     } DU;               // have to move 64 bit entities as 32 bit halves since
michael@0:                         // stack slots are not guaranteed 16 byte aligned
michael@0: 
michael@0:     for(uint32_t i = 0; i < l_paramCount; i++, l_d++, l_s++)
michael@0:     {
michael@0: 	if (regCount < 5) regCount++;
michael@0:         if(l_s->IsPtrData())
michael@0:         {
michael@0:             if(l_s->type == nsXPTType::T_JSVAL)
michael@0:             {
michael@0:               // On SPARC, we need to pass a pointer to HandleValue
michael@0:               *((void**)l_d) = &l_s->ptr;
michael@0:             } else
michael@0:             {
michael@0:               *((void**)l_d) = l_s->ptr;
michael@0:             }
michael@0:             continue;
michael@0:         }
michael@0:         switch(l_s->type)
michael@0:         {
michael@0:         case nsXPTType::T_I8     : *((int32_t*)   l_d) = l_s->val.i8;          break;
michael@0:         case nsXPTType::T_I16    : *((int32_t*)  l_d) = l_s->val.i16;         break;
michael@0:         case nsXPTType::T_I32    : *((int32_t*)  l_d) = l_s->val.i32;         break;
michael@0:         case nsXPTType::T_I64    : 
michael@0:         case nsXPTType::T_U64    : 
michael@0:         case nsXPTType::T_DOUBLE : *((uint32_t*) l_d++) = ((DU *)l_s)->hi;
michael@0: 				   if (regCount < 5) regCount++;
michael@0:                                    *((uint32_t*) l_d) = ((DU *)l_s)->lo;
michael@0:                                    break;
michael@0:         case nsXPTType::T_U8     : *((uint32_t*) l_d) = l_s->val.u8;          break;
michael@0:         case nsXPTType::T_U16    : *((uint32_t*) l_d) = l_s->val.u16;         break;
michael@0:         case nsXPTType::T_U32    : *((uint32_t*) l_d) = l_s->val.u32;         break;
michael@0:         case nsXPTType::T_FLOAT  : *((float*)  l_d) = l_s->val.f;           break;
michael@0:         case nsXPTType::T_BOOL   : *((uint32_t*) l_d) = l_s->val.b;           break;
michael@0:         case nsXPTType::T_CHAR   : *((uint32_t*) l_d) = l_s->val.c;           break;
michael@0:         case nsXPTType::T_WCHAR  : *((int32_t*)  l_d) = l_s->val.wc;          break;
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:     return regCount;
michael@0: }
michael@0: