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target-tilegx: Handle scalar multiply instructions

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Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2015-08-22 10:37:38 -07:00
parent f090f9f7ce
commit 4ff49775ec
1 changed files with 112 additions and 0 deletions
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112
target-tilegx/translate.c
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@ -213,6 +213,38 @@ static void gen_dblaligni(TCGv tdest, TCGv tsrca, TCGv tsrcb, int shr)
tcg_temp_free(t0);
}
typedef enum {
LU, LS, HU, HS
} MulHalf;
static void gen_ext_half(TCGv d, TCGv s, MulHalf h)
{
switch (h) {
case LU:
tcg_gen_ext32u_tl(d, s);
break;
case LS:
tcg_gen_ext32s_tl(d, s);
break;
case HU:
tcg_gen_shri_tl(d, s, 32);
break;
case HS:
tcg_gen_sari_tl(d, s, 32);
break;
}
}
static void gen_mul_half(TCGv tdest, TCGv tsrca, TCGv tsrcb,
MulHalf ha, MulHalf hb)
{
TCGv t = tcg_temp_new();
gen_ext_half(t, tsrca, ha);
gen_ext_half(tdest, tsrcb, hb);
tcg_gen_mul_tl(tdest, tdest, t);
tcg_temp_free(t);
}
static TileExcp gen_st_opcode(DisasContext *dc, unsigned dest, unsigned srca,
unsigned srcb, TCGMemOp memop, const char *name)
{
@ -615,38 +647,118 @@ static TileExcp gen_rrr_opcode(DisasContext *dc, unsigned opext,
case OE_RRR(MNZ, 0, X1):
case OE_RRR(MNZ, 4, Y0):
case OE_RRR(MNZ, 4, Y1):
return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
case OE_RRR(MULAX, 0, X0):
case OE_RRR(MULAX, 3, Y0):
tcg_gen_mul_tl(tdest, tsrca, tsrcb);
tcg_gen_add_tl(tdest, tdest, load_gr(dc, dest));
tcg_gen_ext32s_tl(tdest, tdest);
mnemonic = "mulax";
break;
case OE_RRR(MULA_HS_HS, 0, X0):
case OE_RRR(MULA_HS_HS, 9, Y0):
gen_mul_half(tdest, tsrca, tsrcb, HS, HS);
tcg_gen_add_tl(tdest, tdest, load_gr(dc, dest));
mnemonic = "mula_hs_hs";
break;
case OE_RRR(MULA_HS_HU, 0, X0):
gen_mul_half(tdest, tsrca, tsrcb, HS, HU);
tcg_gen_add_tl(tdest, tdest, load_gr(dc, dest));
mnemonic = "mula_hs_hu";
break;
case OE_RRR(MULA_HS_LS, 0, X0):
gen_mul_half(tdest, tsrca, tsrcb, HS, LS);
tcg_gen_add_tl(tdest, tdest, load_gr(dc, dest));
mnemonic = "mula_hs_ls";
break;
case OE_RRR(MULA_HS_LU, 0, X0):
gen_mul_half(tdest, tsrca, tsrcb, HS, LU);
tcg_gen_add_tl(tdest, tdest, load_gr(dc, dest));
mnemonic = "mula_hs_lu";
break;
case OE_RRR(MULA_HU_HU, 0, X0):
case OE_RRR(MULA_HU_HU, 9, Y0):
gen_mul_half(tdest, tsrca, tsrcb, HU, HU);
tcg_gen_add_tl(tdest, tdest, load_gr(dc, dest));
mnemonic = "mula_hu_hu";
break;
case OE_RRR(MULA_HU_LS, 0, X0):
gen_mul_half(tdest, tsrca, tsrcb, HU, LS);
tcg_gen_add_tl(tdest, tdest, load_gr(dc, dest));
mnemonic = "mula_hu_ls";
break;
case OE_RRR(MULA_HU_LU, 0, X0):
gen_mul_half(tdest, tsrca, tsrcb, HU, LU);
tcg_gen_add_tl(tdest, tdest, load_gr(dc, dest));
mnemonic = "mula_hu_lu";
break;
case OE_RRR(MULA_LS_LS, 0, X0):
case OE_RRR(MULA_LS_LS, 9, Y0):
gen_mul_half(tdest, tsrca, tsrcb, LS, LS);
tcg_gen_add_tl(tdest, tdest, load_gr(dc, dest));
mnemonic = "mula_ls_ls";
break;
case OE_RRR(MULA_LS_LU, 0, X0):
gen_mul_half(tdest, tsrca, tsrcb, LS, LU);
tcg_gen_add_tl(tdest, tdest, load_gr(dc, dest));
mnemonic = "mula_ls_lu";
break;
case OE_RRR(MULA_LU_LU, 0, X0):
case OE_RRR(MULA_LU_LU, 9, Y0):
gen_mul_half(tdest, tsrca, tsrcb, LU, LU);
tcg_gen_add_tl(tdest, tdest, load_gr(dc, dest));
mnemonic = "mula_lu_lu";
break;
case OE_RRR(MULX, 0, X0):
case OE_RRR(MULX, 3, Y0):
tcg_gen_mul_tl(tdest, tsrca, tsrcb);
tcg_gen_ext32s_tl(tdest, tdest);
mnemonic = "mulx";
break;
case OE_RRR(MUL_HS_HS, 0, X0):
case OE_RRR(MUL_HS_HS, 8, Y0):
gen_mul_half(tdest, tsrca, tsrcb, HS, HS);
mnemonic = "mul_hs_hs";
break;
case OE_RRR(MUL_HS_HU, 0, X0):
gen_mul_half(tdest, tsrca, tsrcb, HS, HU);
mnemonic = "mul_hs_hu";
break;
case OE_RRR(MUL_HS_LS, 0, X0):
gen_mul_half(tdest, tsrca, tsrcb, HS, LS);
mnemonic = "mul_hs_ls";
break;
case OE_RRR(MUL_HS_LU, 0, X0):
gen_mul_half(tdest, tsrca, tsrcb, HS, LU);
mnemonic = "mul_hs_lu";
break;
case OE_RRR(MUL_HU_HU, 0, X0):
case OE_RRR(MUL_HU_HU, 8, Y0):
gen_mul_half(tdest, tsrca, tsrcb, HU, HU);
mnemonic = "mul_hu_hu";
break;
case OE_RRR(MUL_HU_LS, 0, X0):
gen_mul_half(tdest, tsrca, tsrcb, HU, LS);
mnemonic = "mul_hu_ls";
break;
case OE_RRR(MUL_HU_LU, 0, X0):
gen_mul_half(tdest, tsrca, tsrcb, HU, LU);
mnemonic = "mul_hu_lu";
break;
case OE_RRR(MUL_LS_LS, 0, X0):
case OE_RRR(MUL_LS_LS, 8, Y0):
gen_mul_half(tdest, tsrca, tsrcb, LS, LS);
mnemonic = "mul_ls_ls";
break;
case OE_RRR(MUL_LS_LU, 0, X0):
gen_mul_half(tdest, tsrca, tsrcb, LS, LU);
mnemonic = "mul_ls_lu";
break;
case OE_RRR(MUL_LU_LU, 0, X0):
case OE_RRR(MUL_LU_LU, 8, Y0):
gen_mul_half(tdest, tsrca, tsrcb, LU, LU);
mnemonic = "mul_lu_lu";
break;
case OE_RRR(MZ, 0, X0):
case OE_RRR(MZ, 0, X1):
case OE_RRR(MZ, 4, Y0):