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targe-ppc: optimize mfcr and mtcrf

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Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6793 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2009-03-09 18:50:24 +00:00
parent 7d515c1d73
commit 651721b2a5
3 changed files with 26 additions and 30 deletions
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24
target-ppc/op_helper.c
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@ -53,30 +53,6 @@ void helper_raise_exception (uint32_t exception)
helper_raise_exception_err(exception, 0);
}
/*****************************************************************************/
/* Registers load and stores */
target_ulong helper_load_cr (void)
{
return (env->crf[0] << 28) |
(env->crf[1] << 24) |
(env->crf[2] << 20) |
(env->crf[3] << 16) |
(env->crf[4] << 12) |
(env->crf[5] << 8) |
(env->crf[6] << 4) |
(env->crf[7] << 0);
}
void helper_store_cr (target_ulong val, uint32_t mask)
{
int i, sh;
for (i = 0, sh = 7; i < 8; i++, sh--) {
if (mask & (1 << sh))
env->crf[i] = (val >> (sh * 4)) & 0xFUL;
}
}
/*****************************************************************************/
/* SPR accesses */
void helper_load_dump_spr (uint32_t sprn)