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target/xtensa: implement salt/saltu

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SALT/SALTU are recent additions to the core Xtensa ISA that do
signed/unsigned setcond.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
This commit is contained in:
Max Filippov 2017-02-17 16:39:30 -08:00
parent 13f6a7cd3a
commit d1e9b0068a
1 changed files with 18 additions and 0 deletions
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18
target/xtensa/translate.c
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@ -2194,6 +2194,16 @@ static void translate_s32e(DisasContext *dc, const uint32_t arg[],
}
}
static void translate_salt(DisasContext *dc, const uint32_t arg[],
const uint32_t par[])
{
if (gen_window_check3(dc, arg[0], arg[1], arg[2])) {
tcg_gen_setcond_i32(par[0],
cpu_R[arg[0]],
cpu_R[arg[1]], cpu_R[arg[2]]);
}
}
static void translate_sext(DisasContext *dc, const uint32_t arg[],
const uint32_t par[])
{
@ -3661,6 +3671,14 @@ static const XtensaOpcodeOps core_ops[] = {
.name = "s8i",
.translate = translate_ldst,
.par = (const uint32_t[]){MO_UB, false, true},
}, {
.name = "salt",
.translate = translate_salt,
.par = (const uint32_t[]){TCG_COND_LT},
}, {
.name = "saltu",
.translate = translate_salt,
.par = (const uint32_t[]){TCG_COND_LTU},
}, {
.name = "sext",
.translate = translate_sext,