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CRIS: Convert divide step to TCG.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4313 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
edgar_igl 2008-05-03 21:34:39 +00:00
parent 4d07272d80
commit aae6b32ae6
1 changed files with 18 additions and 1 deletions
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19
target-cris/translate.c
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@ -375,6 +375,23 @@ static void t_gen_lz_i32(TCGv d, TCGv x)
tcg_gen_discard_i32(n);
}
static void t_gen_cris_dstep(TCGv d, TCGv s)
{
int l1;
l1 = gen_new_label();
/*
* d <<= 1
* if (d >= s)
* d -= s;
*/
tcg_gen_shli_tl(d, d, 1);
tcg_gen_brcond_tl(TCG_COND_LTU, d, s, l1);
tcg_gen_sub_tl(d, d, s);
gen_set_label(l1);
}
/* Extended arithmetics on CRIS. */
static inline void t_gen_add_flag(TCGv d, int flag)
{
@ -725,7 +742,7 @@ static void crisv32_alu_op(DisasContext *dc, int op, int rd, int size)
}
break;
case CC_OP_DSTEP:
gen_op_dstep_T0_T1();
t_gen_cris_dstep(cpu_T[0], cpu_T[1]);
break;
case CC_OP_BOUND:
{