fs_translating_port_proxy.cc revision 4070 
15081Sgblack@eecs.umich.edu/*
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117087Snate@binkert.org * documentation and/or other materials provided with the distribution;
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275081Sgblack@eecs.umich.edu *
285081Sgblack@eecs.umich.edu * Authors: Ali Saidi
295081Sgblack@eecs.umich.edu */
305081Sgblack@eecs.umich.edu
315081Sgblack@eecs.umich.edu/**
325081Sgblack@eecs.umich.edu * @file
335081Sgblack@eecs.umich.edu * Port object definitions.
345081Sgblack@eecs.umich.edu */
355081Sgblack@eecs.umich.edu
365081Sgblack@eecs.umich.edu#include "base/chunk_generator.hh"
375081Sgblack@eecs.umich.edu#include "cpu/thread_context.hh"
385081Sgblack@eecs.umich.edu#include "mem/vport.hh"
395081Sgblack@eecs.umich.edu
405081Sgblack@eecs.umich.eduvoid
415081Sgblack@eecs.umich.eduVirtualPort::readBlob(Addr addr, uint8_t *p, int size)
425081Sgblack@eecs.umich.edu{
435081Sgblack@eecs.umich.edu    Addr paddr;
445081Sgblack@eecs.umich.edu    for (ChunkGenerator gen(addr, size, TheISA::PageBytes); !gen.done();
455081Sgblack@eecs.umich.edu            gen.next())
465081Sgblack@eecs.umich.edu    {
475081Sgblack@eecs.umich.edu        if (tc)
485081Sgblack@eecs.umich.edu            paddr = TheISA::vtophys(tc,gen.addr());
49        else
50            paddr = TheISA::vtophys(gen.addr());
51
52        FunctionalPort::readBlob(paddr, p, gen.size());
53        p += gen.size();
54    }
55}
56
57void
58VirtualPort::writeBlob(Addr addr, uint8_t *p, int size)
59{
60    Addr paddr;
61    for (ChunkGenerator gen(addr, size, TheISA::PageBytes); !gen.done();
62            gen.next())
63    {
64        if (tc)
65            paddr = TheISA::vtophys(tc,gen.addr());
66        else
67            paddr = TheISA::vtophys(gen.addr());
68
69        FunctionalPort::writeBlob(paddr, p, gen.size());
70        p += gen.size();
71    }
72}
73
74void
75CopyOut(ThreadContext *tc, void *dest, Addr src, size_t cplen)
76{
77    uint8_t *dst = (uint8_t *)dest;
78    VirtualPort *vp = tc->getVirtPort(tc);
79
80    vp->readBlob(src, dst, cplen);
81
82    tc->delVirtPort(vp);
83
84}
85
86void
87CopyIn(ThreadContext *tc, Addr dest, void *source, size_t cplen)
88{
89    uint8_t *src = (uint8_t *)source;
90    VirtualPort *vp = tc->getVirtPort(tc);
91
92    vp->writeBlob(dest, src, cplen);
93
94    tc->delVirtPort(vp);
95}
96
97void
98CopyStringOut(ThreadContext *tc, char *dst, Addr vaddr, size_t maxlen)
99{
100    int len = 0;
101    char *start = dst;
102    VirtualPort *vp = tc->getVirtPort(tc);
103
104    do {
105        vp->readBlob(vaddr++, (uint8_t*)dst++, 1);
106    } while (len < maxlen && start[len++] != 0 );
107
108    tc->delVirtPort(vp);
109    dst[len] = 0;
110}
111
112void
113CopyStringIn(ThreadContext *tc, char *src, Addr vaddr)
114{
115    VirtualPort *vp = tc->getVirtPort(tc);
116    for (ChunkGenerator gen(vaddr, strlen(src), TheISA::PageBytes); !gen.done();
117            gen.next())
118    {
119        vp->writeBlob(gen.addr(), (uint8_t*)src, gen.size());
120        src += gen.size();
121    }
122    tc->delVirtPort(vp);
123}
124