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authorRichard Henderson <rth@twiddle.net>2015-08-20 21:11:28 -0700
committerRichard Henderson <rth@twiddle.net>2015-09-15 07:45:33 -0700
commit89b8c7504fbc53a35c76e7738dbdf53f3c254b8f (patch)
tree9e7a0479705b04e9871238b5e52188640c81e723 /target-tilegx
parenta9fdfc7e7bf122f603486f4277db91a3d0d274ab (diff)
downloadqemu-arm-89b8c7504fbc53a35c76e7738dbdf53f3c254b8f.tar.gz
target-tilegx: Handle arithmetic instructions
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target-tilegx')
-rw-r--r--target-tilegx/translate.c96
1 files changed, 90 insertions, 6 deletions
diff --git a/target-tilegx/translate.c b/target-tilegx/translate.c
index 68c7db21ee..6b5de5530c 100644
--- a/target-tilegx/translate.c
+++ b/target-tilegx/translate.c
@@ -160,6 +160,23 @@ static TCGv dest_gr(DisasContext *dc, unsigned reg)
return dc->wb[n].val = tcg_temp_new_i64();
}
+static void gen_saturate_op(TCGv tdest, TCGv tsrca, TCGv tsrcb,
+ void (*operate)(TCGv, TCGv, TCGv))
+{
+ TCGv t0 = tcg_temp_new();
+
+ tcg_gen_ext32s_tl(tdest, tsrca);
+ tcg_gen_ext32s_tl(t0, tsrcb);
+ operate(tdest, tdest, t0);
+
+ tcg_gen_movi_tl(t0, 0x7fffffff);
+ tcg_gen_movcond_tl(TCG_COND_GT, tdest, tdest, t0, t0, tdest);
+ tcg_gen_movi_tl(t0, -0x80000000LL);
+ tcg_gen_movcond_tl(TCG_COND_LT, tdest, tdest, t0, t0, tdest);
+
+ tcg_temp_free(t0);
+}
+
static TileExcp gen_rr_opcode(DisasContext *dc, unsigned opext,
unsigned dest, unsigned srca)
{
@@ -277,15 +294,24 @@ static TileExcp gen_rrr_opcode(DisasContext *dc, unsigned opext,
switch (opext) {
case OE_RRR(ADDXSC, 0, X0):
case OE_RRR(ADDXSC, 0, X1):
+ gen_saturate_op(tdest, tsrca, tsrcb, tcg_gen_add_tl);
+ mnemonic = "addxsc";
+ break;
case OE_RRR(ADDX, 0, X0):
case OE_RRR(ADDX, 0, X1):
case OE_RRR(ADDX, 0, Y0):
case OE_RRR(ADDX, 0, Y1):
+ tcg_gen_add_tl(tdest, tsrca, tsrcb);
+ tcg_gen_ext32s_tl(tdest, tdest);
+ mnemonic = "addx";
+ break;
case OE_RRR(ADD, 0, X0):
case OE_RRR(ADD, 0, X1):
case OE_RRR(ADD, 0, Y0):
case OE_RRR(ADD, 0, Y1):
- return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
+ tcg_gen_add_tl(tdest, tsrca, tsrcb);
+ mnemonic = "add";
+ break;
case OE_RRR(AND, 0, X0):
case OE_RRR(AND, 0, X1):
case OE_RRR(AND, 5, Y0):
@@ -422,30 +448,58 @@ static TileExcp gen_rrr_opcode(DisasContext *dc, unsigned opext,
case OE_RRR(ROTL, 0, X1):
case OE_RRR(ROTL, 6, Y0):
case OE_RRR(ROTL, 6, Y1):
+ return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
case OE_RRR(SHL1ADDX, 0, X0):
case OE_RRR(SHL1ADDX, 0, X1):
case OE_RRR(SHL1ADDX, 7, Y0):
case OE_RRR(SHL1ADDX, 7, Y1):
+ tcg_gen_shli_tl(tdest, tsrca, 1);
+ tcg_gen_add_tl(tdest, tdest, tsrcb);
+ tcg_gen_ext32s_tl(tdest, tdest);
+ mnemonic = "shl1addx";
+ break;
case OE_RRR(SHL1ADD, 0, X0):
case OE_RRR(SHL1ADD, 0, X1):
case OE_RRR(SHL1ADD, 1, Y0):
case OE_RRR(SHL1ADD, 1, Y1):
+ tcg_gen_shli_tl(tdest, tsrca, 1);
+ tcg_gen_add_tl(tdest, tdest, tsrcb);
+ mnemonic = "shl1add";
+ break;
case OE_RRR(SHL2ADDX, 0, X0):
case OE_RRR(SHL2ADDX, 0, X1):
case OE_RRR(SHL2ADDX, 7, Y0):
case OE_RRR(SHL2ADDX, 7, Y1):
+ tcg_gen_shli_tl(tdest, tsrca, 2);
+ tcg_gen_add_tl(tdest, tdest, tsrcb);
+ tcg_gen_ext32s_tl(tdest, tdest);
+ mnemonic = "shl2addx";
+ break;
case OE_RRR(SHL2ADD, 0, X0):
case OE_RRR(SHL2ADD, 0, X1):
case OE_RRR(SHL2ADD, 1, Y0):
case OE_RRR(SHL2ADD, 1, Y1):
+ tcg_gen_shli_tl(tdest, tsrca, 2);
+ tcg_gen_add_tl(tdest, tdest, tsrcb);
+ mnemonic = "shl2add";
+ break;
case OE_RRR(SHL3ADDX, 0, X0):
case OE_RRR(SHL3ADDX, 0, X1):
case OE_RRR(SHL3ADDX, 7, Y0):
case OE_RRR(SHL3ADDX, 7, Y1):
+ tcg_gen_shli_tl(tdest, tsrca, 3);
+ tcg_gen_add_tl(tdest, tdest, tsrcb);
+ tcg_gen_ext32s_tl(tdest, tdest);
+ mnemonic = "shl3addx";
+ break;
case OE_RRR(SHL3ADD, 0, X0):
case OE_RRR(SHL3ADD, 0, X1):
case OE_RRR(SHL3ADD, 1, Y0):
case OE_RRR(SHL3ADD, 1, Y1):
+ tcg_gen_shli_tl(tdest, tsrca, 3);
+ tcg_gen_add_tl(tdest, tdest, tsrcb);
+ mnemonic = "shl3add";
+ break;
case OE_RRR(SHLX, 0, X0):
case OE_RRR(SHLX, 0, X1):
case OE_RRR(SHL, 0, X0):
@@ -471,16 +525,27 @@ static TileExcp gen_rrr_opcode(DisasContext *dc, unsigned opext,
case OE_RRR(STNT4, 0, X1):
case OE_RRR(STNT, 0, X1):
case OE_RRR(ST, 0, X1):
+ return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
case OE_RRR(SUBXSC, 0, X0):
case OE_RRR(SUBXSC, 0, X1):
+ gen_saturate_op(tdest, tsrca, tsrcb, tcg_gen_sub_tl);
+ mnemonic = "subxsc";
+ break;
case OE_RRR(SUBX, 0, X0):
case OE_RRR(SUBX, 0, X1):
case OE_RRR(SUBX, 0, Y0):
case OE_RRR(SUBX, 0, Y1):
+ tcg_gen_sub_tl(tdest, tsrca, tsrcb);
+ tcg_gen_ext32s_tl(tdest, tdest);
+ mnemonic = "subx";
+ break;
case OE_RRR(SUB, 0, X0):
case OE_RRR(SUB, 0, X1):
case OE_RRR(SUB, 0, Y0):
case OE_RRR(SUB, 0, Y1):
+ tcg_gen_sub_tl(tdest, tsrca, tsrcb);
+ mnemonic = "sub";
+ break;
case OE_RRR(V1ADDUC, 0, X0):
case OE_RRR(V1ADDUC, 0, X1):
case OE_RRR(V1ADD, 0, X0):
@@ -640,11 +705,21 @@ static TileExcp gen_rri_opcode(DisasContext *dc, unsigned opext,
const char *mnemonic;
switch (opext) {
+ case OE(ADDI_OPCODE_Y0, 0, Y0):
+ case OE(ADDI_OPCODE_Y1, 0, Y1):
case OE_IM(ADDI, X0):
case OE_IM(ADDI, X1):
+ tcg_gen_addi_tl(tdest, tsrca, imm);
+ mnemonic = "addi";
+ break;
+ case OE(ADDXI_OPCODE_Y0, 0, Y0):
+ case OE(ADDXI_OPCODE_Y1, 0, Y1):
case OE_IM(ADDXI, X0):
case OE_IM(ADDXI, X1):
- return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
+ tcg_gen_addi_tl(tdest, tsrca, imm);
+ tcg_gen_ext32s_tl(tdest, tdest);
+ mnemonic = "addxi";
+ break;
case OE(ANDI_OPCODE_Y0, 0, Y0):
case OE(ANDI_OPCODE_Y1, 0, Y1):
case OE_IM(ANDI, X0):
@@ -752,21 +827,30 @@ static TileExcp gen_rri_opcode(DisasContext *dc, unsigned opext,
case OE_SH(V2SHRSI, X1):
case OE_SH(V2SHRUI, X0):
case OE_SH(V2SHRUI, X1):
+ return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
- case OE(ADDI_OPCODE_Y0, 0, Y0):
- case OE(ADDI_OPCODE_Y1, 0, Y1):
case OE(ADDLI_OPCODE_X0, 0, X0):
case OE(ADDLI_OPCODE_X1, 0, X1):
- case OE(ADDXI_OPCODE_Y0, 0, Y0):
- case OE(ADDXI_OPCODE_Y1, 0, Y1):
+ tcg_gen_addi_tl(tdest, tsrca, imm);
+ mnemonic = "addli";
+ break;
case OE(ADDXLI_OPCODE_X0, 0, X0):
case OE(ADDXLI_OPCODE_X1, 0, X1):
+ tcg_gen_addi_tl(tdest, tsrca, imm);
+ tcg_gen_ext32s_tl(tdest, tdest);
+ mnemonic = "addxli";
+ break;
case OE(CMPEQI_OPCODE_Y0, 0, Y0):
case OE(CMPEQI_OPCODE_Y1, 0, Y1):
case OE(CMPLTSI_OPCODE_Y0, 0, Y0):
case OE(CMPLTSI_OPCODE_Y1, 0, Y1):
+ return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
case OE(SHL16INSLI_OPCODE_X0, 0, X0):
case OE(SHL16INSLI_OPCODE_X1, 0, X1):
+ tcg_gen_shli_tl(tdest, tsrca, 16);
+ tcg_gen_ori_tl(tdest, tdest, imm & 0xffff);
+ mnemonic = "shl16insli";
+ break;
default:
return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;