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xpcom/reflect/xptcall/src/md/unix/xptcinvoke_sparc_openbsd.cpp@129ffea94266 (annotated)

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

Sat, 03 Jan 2015 20:18:00 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Sat, 03 Jan 2015 20:18:00 +0100

branch

TOR_BUG_3246

changeset 7

129ffea94266

permissions

-rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

michael@0	1	/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
michael@0	2	/* This Source Code Form is subject to the terms of the Mozilla Public
michael@0	3	* License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0	4	* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0	5
michael@0	6	/* Platform specific code to invoke XPCOM methods on native objects */
michael@0	7
michael@0	8	#include "xptcprivate.h"
michael@0	9
michael@0	10	#if !defined(__sparc__)
michael@0	11	#error "This code is for Sparc only"
michael@0	12	#endif
michael@0	13
michael@0	14	typedef unsigned nsXPCVariant;
michael@0	15
michael@0	16	extern "C" uint32_t
michael@0	17	invoke_count_words(uint32_t paramCount, nsXPTCVariant* s)
michael@0	18	{
michael@0	19	uint32_t result = 0;
michael@0	20	for(uint32_t i = 0; i < paramCount; i++, s++)
michael@0	21	{
michael@0	22	if(s->IsPtrData())
michael@0	23	{
michael@0	24	result++;
michael@0	25	continue;
michael@0	26	}
michael@0	27	switch(s->type)
michael@0	28	{
michael@0	29	case nsXPTType::T_I8 :
michael@0	30	case nsXPTType::T_I16 :
michael@0	31	case nsXPTType::T_I32 :
michael@0	32	result++;
michael@0	33	break;
michael@0	34	case nsXPTType::T_I64 :
michael@0	35	result+=2;
michael@0	36	break;
michael@0	37	case nsXPTType::T_U8 :
michael@0	38	case nsXPTType::T_U16 :
michael@0	39	case nsXPTType::T_U32 :
michael@0	40	result++;
michael@0	41	break;
michael@0	42	case nsXPTType::T_U64 :
michael@0	43	result+=2;
michael@0	44	break;
michael@0	45	case nsXPTType::T_FLOAT :
michael@0	46	result++;
michael@0	47	break;
michael@0	48	case nsXPTType::T_DOUBLE :
michael@0	49	result+=2;
michael@0	50	break;
michael@0	51	case nsXPTType::T_BOOL :
michael@0	52	case nsXPTType::T_CHAR :
michael@0	53	case nsXPTType::T_WCHAR :
michael@0	54	result++;
michael@0	55	break;
michael@0	56	default:
michael@0	57	// all the others are plain pointer types
michael@0	58	result++;
michael@0	59	break;
michael@0	60	}
michael@0	61	}
michael@0	62	// nuts, I know there's a cooler way of doing this, but it's late
michael@0	63	// now and it'll probably come to me in the morning.
michael@0	64	if (result & 0x3) result += 4 - (result & 0x3); // ensure q-word alignment
michael@0	65	return result;
michael@0	66	}
michael@0	67
michael@0	68	extern "C" uint32_t
michael@0	69	invoke_copy_to_stack(uint32_t* d, uint32_t paramCount, nsXPTCVariant* s)
michael@0	70	{
michael@0	71	/*
michael@0	72	We need to copy the parameters for this function to locals and use them
michael@0	73	from there since the parameters occupy the same stack space as the stack
michael@0	74	we're trying to populate.
michael@0	75	*/
michael@0	76	uint32_t *l_d = d;
michael@0	77	nsXPTCVariant *l_s = s;
michael@0	78	uint32_t l_paramCount = paramCount;
michael@0	79	uint32_t regCount = 0; // return the number of registers to load from the stack
michael@0	80
michael@0	81	typedef struct {
michael@0	82	uint32_t hi;
michael@0	83	uint32_t lo;
michael@0	84	} DU; // have to move 64 bit entities as 32 bit halves since
michael@0	85	// stack slots are not guaranteed 16 byte aligned
michael@0	86
michael@0	87	for(uint32_t i = 0; i < l_paramCount; i++, l_d++, l_s++)
michael@0	88	{
michael@0	89	if (regCount < 5) regCount++;
michael@0	90	if(l_s->IsPtrData())
michael@0	91	{
michael@0	92	if(l_s->type == nsXPTType::T_JSVAL)
michael@0	93	{
michael@0	94	// On SPARC, we need to pass a pointer to HandleValue
michael@0	95	*((void**)l_d) = &l_s->ptr;
michael@0	96	} else
michael@0	97	{
michael@0	98	*((void**)l_d) = l_s->ptr;
michael@0	99	}
michael@0	100	continue;
michael@0	101	}
michael@0	102	switch(l_s->type)
michael@0	103	{
michael@0	104	case nsXPTType::T_I8 : *((int32_t*) l_d) = l_s->val.i8; break;
michael@0	105	case nsXPTType::T_I16 : *((int32_t*) l_d) = l_s->val.i16; break;
michael@0	106	case nsXPTType::T_I32 : *((int32_t*) l_d) = l_s->val.i32; break;
michael@0	107	case nsXPTType::T_I64 :
michael@0	108	case nsXPTType::T_U64 :
michael@0	109	case nsXPTType::T_DOUBLE : *((uint32_t*) l_d++) = ((DU *)l_s)->hi;
michael@0	110	if (regCount < 5) regCount++;
michael@0	111	*((uint32_t*) l_d) = ((DU *)l_s)->lo;
michael@0	112	break;
michael@0	113	case nsXPTType::T_U8 : *((uint32_t*) l_d) = l_s->val.u8; break;
michael@0	114	case nsXPTType::T_U16 : *((uint32_t*) l_d) = l_s->val.u16; break;
michael@0	115	case nsXPTType::T_U32 : *((uint32_t*) l_d) = l_s->val.u32; break;
michael@0	116	case nsXPTType::T_FLOAT : *((float*) l_d) = l_s->val.f; break;
michael@0	117	case nsXPTType::T_BOOL : *((uint32_t*) l_d) = l_s->val.b; break;
michael@0	118	case nsXPTType::T_CHAR : *((uint32_t*) l_d) = l_s->val.c; break;
michael@0	119	case nsXPTType::T_WCHAR : *((int32_t*) l_d) = l_s->val.wc; break;
michael@0	120	default:
michael@0	121	// all the others are plain pointer types
michael@0	122	*((void**)l_d) = l_s->val.p;
michael@0	123	break;
michael@0	124	}
michael@0	125	}
michael@0	126	return regCount;
michael@0	127	}
michael@0	128