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runtime: Fix chan code for big-endian strict-alignment systems 

From-SVN: r184115
This commit is contained in:
Ian Lance Taylor 2012-02-11 00:03:10 +00:00
parent c3b0c721e8
commit 41da64ed3a
1 changed files with 22 additions and 7 deletions
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29
libgo/runtime/chan.c
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@ -409,11 +409,20 @@ closed:
void
__go_send_small(ChanType *t, Hchan* c, uint64 val)
{
byte b[sizeof(uint64)];
union
{
byte b[sizeof(uint64)];
uint64 v;
} u;
byte *p;
runtime_memclr(b, sizeof(uint64));
__builtin_memcpy(b, &val, t->__element_type->__size);
runtime_chansend(t, c, b, nil);
u.v = val;
#ifndef WORDS_BIGENDIAN
p = u.b;
#else
p = u.b + sizeof(uint64) - t->__element_type->__size;
#endif
runtime_chansend(t, c, p, nil);
}
// The compiler generates a call to __go_send_big to send a value
@ -433,9 +442,15 @@ __go_receive_small(ChanType *t, Hchan* c)
byte b[sizeof(uint64)];
uint64 v;
} u;
byte *p;
u.v = 0;
runtime_chanrecv(t, c, u.b, nil, nil);
#ifndef WORDS_BIGENDIAN
p = u.b;
#else
p = u.b + sizeof(uint64) - t->__element_type->__size;
#endif
runtime_chanrecv(t, c, p, nil, nil);
return u.v;
}
@ -654,8 +669,8 @@ newselect(int32 size, Select **selp)
sel->tcase = size;
sel->ncase = 0;
sel->pollorder = (void*)(sel->scase + size);
sel->lockorder = (void*)(sel->pollorder + size);
sel->lockorder = (void*)(sel->scase + size);
sel->pollorder = (void*)(sel->lockorder + size);
*selp = sel;
if(debug)