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xpcom/reflect/xptcall/src/md/unix/xptcinvoke_sparc64_openbsd.cpp@b8a032363ba2 (annotated)

xpcom/reflect/xptcall/src/md/unix/xptcinvoke_sparc64_openbsd.cpp

Thu, 22 Jan 2015 13:21:57 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Thu, 22 Jan 2015 13:21:57 +0100

branch

TOR_BUG_9701

changeset 15

b8a032363ba2

permissions

-rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

michael@0	1	/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0	2	*
michael@0	3	* This Source Code Form is subject to the terms of the Mozilla Public
michael@0	4	* License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0	5	* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0	6
michael@0	7
michael@0	8	/* Platform specific code to invoke XPCOM methods on native objects */
michael@0	9
michael@0	10	#include "xptcprivate.h"
michael@0	11
michael@0	12	#if !defined(__sparc) && !defined(__sparc__)
michael@0	13	#error "This code is for Sparc only"
michael@0	14	#endif
michael@0	15
michael@0	16	extern "C" uint64_t
michael@0	17	invoke_copy_to_stack(uint64_t* d, uint32_t paramCount, nsXPTCVariant* s)
michael@0	18	{
michael@0	19	/*
michael@0	20	We need to copy the parameters for this function to locals and use them
michael@0	21	from there since the parameters occupy the same stack space as the stack
michael@0	22	we're trying to populate.
michael@0	23	*/
michael@0	24	uint64_t *l_d = d;
michael@0	25	nsXPTCVariant *l_s = s;
michael@0	26	uint64_t l_paramCount = paramCount;
michael@0	27	uint64_t regCount = 0; // return the number of registers to load from the stack
michael@0	28
michael@0	29	for(uint64_t i = 0; i < l_paramCount; i++, l_d++, l_s++)
michael@0	30	{
michael@0	31	if (regCount < 5) regCount++;
michael@0	32
michael@0	33	if (l_s->IsPtrData())
michael@0	34	{
michael@0	35	*l_d = (uint64_t)l_s->ptr;
michael@0	36	continue;
michael@0	37	}
michael@0	38	switch (l_s->type)
michael@0	39	{
michael@0	40	case nsXPTType::T_I8 : *((int64_t*)l_d) = l_s->val.i8; break;
michael@0	41	case nsXPTType::T_I16 : *((int64_t*)l_d) = l_s->val.i16; break;
michael@0	42	case nsXPTType::T_I32 : *((int64_t*)l_d) = l_s->val.i32; break;
michael@0	43	case nsXPTType::T_I64 : *((int64_t*)l_d) = l_s->val.i64; break;
michael@0	44
michael@0	45	case nsXPTType::T_U8 : *((uint64_t*)l_d) = l_s->val.u8; break;
michael@0	46	case nsXPTType::T_U16 : *((uint64_t*)l_d) = l_s->val.u16; break;
michael@0	47	case nsXPTType::T_U32 : *((uint64_t*)l_d) = l_s->val.u32; break;
michael@0	48	case nsXPTType::T_U64 : *((uint64_t*)l_d) = l_s->val.u64; break;
michael@0	49
michael@0	50	/* in the case of floats, we want to put the bits in to the
michael@0	51	64bit space right justified... floats in the parameter array on
michael@0	52	sparcv9 use odd numbered registers.. %f1, %f3, so we have to skip
michael@0	53	the space that would be occupied by %f0, %f2, etc.
michael@0	54	*/
michael@0	55	case nsXPTType::T_FLOAT : *(((float*)l_d) + 1) = l_s->val.f; break;
michael@0	56	case nsXPTType::T_DOUBLE: *((double*)l_d) = l_s->val.d; break;
michael@0	57	case nsXPTType::T_BOOL : *((int64_t*)l_d) = l_s->val.b; break;
michael@0	58	case nsXPTType::T_CHAR : *((uint64_t*)l_d) = l_s->val.c; break;
michael@0	59	case nsXPTType::T_WCHAR : *((int64_t*)l_d) = l_s->val.wc; break;
michael@0	60
michael@0	61	default:
michael@0	62	// all the others are plain pointer types
michael@0	63	*((void**)l_d) = l_s->val.p;
michael@0	64	break;
michael@0	65	}
michael@0	66	}
michael@0	67
michael@0	68	return regCount;
michael@0	69	}