1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
/*
* Copyright (c) 2003-2005 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Nathan Binkert
*/
#include "arch/sparc/arguments.hh"
#include "arch/sparc/vtophys.hh"
#include "cpu/thread_context.hh"
#include "mem/vport.hh"
using namespace SparcISA;
Arguments::Data::~Data()
{
while (!data.empty()) {
delete [] data.front();
data.pop_front();
}
}
char *
Arguments::Data::alloc(size_t size)
{
char *buf = new char[size];
data.push_back(buf);
return buf;
}
uint64_t
Arguments::getArg(bool fp)
{
//The caller uses %o0-%05 for the first 6 arguments even if their floating
//point. Double precision floating point values take two registers/args.
//Quads, structs, and unions are passed as pointers. All arguments beyond
//the sixth are passed on the stack past the 16 word window save area,
//space for the struct/union return pointer, and space reserved for the
//first 6 arguments which the caller may use but doesn't have to.
if (number < 6) {
return tc->readIntReg(8 + number);
} else {
Addr sp = tc->readIntReg(14);
VirtualPort *vp = tc->getVirtPort(tc);
uint64_t arg = vp->read<uint64_t>(sp + 92 + (number-6) * sizeof(uint64_t));
tc->delVirtPort(vp);
return arg;
}
}
|
