Most of which are either nops or exceptions.
Signed-off-by: Richard Henderson <r...@twiddle.net>
---
target-tilegx/translate.c | 94 ++++++++++++++++++++++++++++++++++-------------
1 file changed, 68 insertions(+), 26 deletions(-)
diff --git a/target-tilegx/translate.c b/target-tilegx/translate.c
index ea68902..5bdc8be 100644
--- a/target-tilegx/translate.c
+++ b/target-tilegx/translate.c
@@ -241,27 +241,82 @@ static TileExcp gen_rr_opcode(DisasContext *dc, unsigned
opext,
TCGv tdest, tsrca;
const char *mnemonic;
TCGMemOp memop;
+ TileExcp ret = TILEGX_EXCP_NONE;
- /* Eliminate nops and jumps before doing anything else. */
+ /* Eliminate instructions with no output before doing anything else. */
switch (opext) {
case OE_RR_Y0(NOP):
case OE_RR_Y1(NOP):
case OE_RR_X0(NOP):
case OE_RR_X1(NOP):
mnemonic = "nop";
- goto do_nop;
+ goto done0;
case OE_RR_Y0(FNOP):
case OE_RR_Y1(FNOP):
case OE_RR_X0(FNOP):
case OE_RR_X1(FNOP):
mnemonic = "fnop";
- do_nop:
- if (srca || dest) {
- return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
+ goto done0;
+ case OE_RR_X1(DRAIN):
+ mnemonic = "drain";
+ goto done0;
+ case OE_RR_X1(FLUSHWB):
+ mnemonic = "flushwb";
+ goto done0;
+ case OE_RR_X1(ILL):
+ case OE_RR_Y1(ILL):
+ ret = TILEGX_EXCP_OPCODE_UNKNOWN;
+ mnemonic = (dest == 0x1c && srca == 0x25 ? "bpt" : "ill");
+ goto done0;
+ case OE_RR_X1(MF):
+ mnemonic = "mf";
+ goto done0;
+ case OE_RR_X1(NAP):
+ /* ??? This should yield, especially in system mode. */
+ mnemonic = "nap";
+ goto done0;
+ case OE_RR_X1(SWINT0):
+ ret = TILEGX_EXCP_OPCODE_UNKNOWN;
+ mnemonic = "swint0";
+ goto done0;
+ case OE_RR_X1(SWINT1):
+ ret = TILEGX_EXCP_SYSCALL;
+ mnemonic = "swint1";
+ goto done0;
+ case OE_RR_X1(SWINT2):
+ ret = TILEGX_EXCP_OPCODE_UNKNOWN;
+ mnemonic = "swint2";
+ goto done0;
+ case OE_RR_X1(SWINT3):
+ ret = TILEGX_EXCP_OPCODE_UNKNOWN;
+ mnemonic = "swint3";
+ goto done0;
+ done0:
+ if ((srca || dest) && ret == TILEGX_EXCP_NONE) {
+ ret = TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
}
qemu_log_mask(CPU_LOG_TB_IN_ASM, "%s", mnemonic);
- return TILEGX_EXCP_NONE;
+ return ret;
+ case OE_RR_X1(DTLBPR):
+ ret = TILEGX_EXCP_OPCODE_UNKNOWN;
+ mnemonic = "dtlbpr";
+ goto done1;
+ case OE_RR_X1(FINV):
+ mnemonic = "finv";
+ goto done1;
+ case OE_RR_X1(FLUSH):
+ mnemonic = "flush";
+ goto done1;
+ case OE_RR_X1(ICOH):
+ mnemonic = "icoh";
+ goto done1;
+ case OE_RR_X1(INV):
+ mnemonic = "inv";
+ goto done1;
+ case OE_RR_X1(WH64):
+ mnemonic = "wh64";
+ goto done1;
case OE_RR_X1(JRP):
case OE_RR_Y1(JRP):
mnemonic = "jrp";
@@ -284,8 +339,12 @@ static TileExcp gen_rr_opcode(DisasContext *dc, unsigned
opext,
dc->jmp.cond = TCG_COND_ALWAYS;
dc->jmp.dest = tcg_temp_new();
tcg_gen_andi_tl(dc->jmp.dest, load_gr(dc, srca), ~7);
+ done1:
+ if (dest && ret == TILEGX_EXCP_NONE) {
+ ret = TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
+ }
qemu_log_mask(CPU_LOG_TB_IN_ASM, "%s %s", mnemonic, reg_names[srca]);
- return TILEGX_EXCP_NONE;
+ return ret;
}
tdest = dest_gr(dc, dest);
@@ -302,17 +361,8 @@ static TileExcp gen_rr_opcode(DisasContext *dc, unsigned
opext,
gen_helper_cnttz(tdest, tsrca);
mnemonic = "cnttz";
break;
- case OE_RR_X1(DRAIN):
- case OE_RR_X1(DTLBPR):
- case OE_RR_X1(FINV):
- case OE_RR_X1(FLUSHWB):
- case OE_RR_X1(FLUSH):
case OE_RR_X0(FSINGLE_PACK1):
case OE_RR_Y0(FSINGLE_PACK1):
- case OE_RR_X1(ICOH):
- case OE_RR_X1(ILL):
- case OE_RR_Y1(ILL):
- case OE_RR_X1(INV):
case OE_RR_X1(IRET):
return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
case OE_RR_X1(LD1S):
@@ -381,14 +431,11 @@ static TileExcp gen_rr_opcode(DisasContext *dc, unsigned
opext,
case OE_RR_X1(LNK):
case OE_RR_Y1(LNK):
if (srca) {
- return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
+ ret = TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
}
tcg_gen_movi_tl(tdest, dc->pc + TILEGX_BUNDLE_SIZE_IN_BYTES);
mnemonic = "lnk";
break;
- case OE_RR_X1(MF):
- case OE_RR_X1(NAP):
- return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
case OE_RR_X0(PCNT):
case OE_RR_Y0(PCNT):
gen_helper_pcnt(tdest, tsrca);
@@ -404,10 +451,6 @@ static TileExcp gen_rr_opcode(DisasContext *dc, unsigned
opext,
tcg_gen_bswap64_tl(tdest, tsrca);
mnemonic = "revbytes";
break;
- case OE_RR_X1(SWINT0):
- case OE_RR_X1(SWINT1):
- case OE_RR_X1(SWINT2):
- case OE_RR_X1(SWINT3):
case OE_RR_X0(TBLIDXB0):
case OE_RR_Y0(TBLIDXB0):
case OE_RR_X0(TBLIDXB1):
@@ -416,14 +459,13 @@ static TileExcp gen_rr_opcode(DisasContext *dc, unsigned
opext,
case OE_RR_Y0(TBLIDXB2):
case OE_RR_X0(TBLIDXB3):
case OE_RR_Y0(TBLIDXB3):
- case OE_RR_X1(WH64):
default:
return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
}
qemu_log_mask(CPU_LOG_TB_IN_ASM, "%s %s, %s", mnemonic,
reg_names[dest], reg_names[srca]);
- return TILEGX_EXCP_NONE;
+ return ret;
}
static TileExcp gen_rrr_opcode(DisasContext *dc, unsigned opext,
--
2.4.3
