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target-microblaze: dec_barrel: Add BSIFI

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Add support for BSIFI.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
This commit is contained in:
Edgar E. Iglesias 2017-06-15 16:28:35 +02:00
parent faa48d742c
commit d09b2585f2
1 changed files with 13 additions and 1 deletions
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14
target/microblaze/translate.c
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@ -661,7 +661,7 @@ static void dec_barrel(DisasContext *dc)
{
TCGv t0;
unsigned int imm_w, imm_s;
bool s, t, e = false;
bool s, t, e = false, i = false;
if ((dc->tb_flags & MSR_EE_FLAG)
&& (dc->cpu->env.pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK)
@ -673,6 +673,7 @@ static void dec_barrel(DisasContext *dc)
if (dc->type_b) {
/* Insert and extract are only available in immediate mode. */
i = extract32(dc->imm, 15, 1);
e = extract32(dc->imm, 14, 1);
}
s = extract32(dc->imm, 10, 1);
@ -692,6 +693,17 @@ static void dec_barrel(DisasContext *dc)
} else {
tcg_gen_extract_i32(cpu_R[dc->rd], cpu_R[dc->ra], imm_s, imm_w);
}
} else if (i) {
int width = imm_w - imm_s + 1;
if (imm_w < imm_s) {
/* These inputs have an undefined behavior. */
qemu_log_mask(LOG_GUEST_ERROR, "bsifi: Bad input w=%d s=%d\n",
imm_w, imm_s);
} else {
tcg_gen_deposit_i32(cpu_R[dc->rd], cpu_R[dc->rd], cpu_R[dc->ra],
imm_s, width);
}
} else {
t0 = tcg_temp_new();