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authorRichard Henderson <rth@twiddle.net>2015-08-21 13:14:25 -0700
committerRichard Henderson <rth@twiddle.net>2015-09-15 07:45:33 -0700
commitd5dbd6eb388a936bb4ea027c48f8f960ae3977c9 (patch)
tree5b2eb7a4088e5292539a5c16a2a8dcf3893eedd4 /target-tilegx
parent73c543776b6983178026f744d3579ae16ae9b5b2 (diff)
downloadqemu-arm-d5dbd6eb388a936bb4ea027c48f8f960ae3977c9.tar.gz
target-tilegx: Implement system and memory management instructions
Most of which are either nops or exceptions. 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.c77
1 files changed, 54 insertions, 23 deletions
diff --git a/target-tilegx/translate.c b/target-tilegx/translate.c
index f2dd824467..168b4da3c6 100644
--- a/target-tilegx/translate.c
+++ b/target-tilegx/translate.c
@@ -248,27 +248,71 @@ 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:
+ 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):
+ mnemonic = (dest == 0x1c && srca == 0x25 ? "bpt" : "ill");
+ qemu_log_mask(CPU_LOG_TB_IN_ASM, "%s", mnemonic);
+ return TILEGX_EXCP_OPCODE_UNKNOWN;
+ 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):
+ case OE_RR_X1(SWINT2):
+ case OE_RR_X1(SWINT3):
+ return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
+ case OE_RR_X1(SWINT1):
+ ret = TILEGX_EXCP_SYSCALL;
+ mnemonic = "swint1";
+ done0:
if (srca || dest) {
return 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):
+ return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
+ 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";
@@ -291,8 +335,12 @@ 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) {
+ return 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);
@@ -309,17 +357,8 @@ 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):
@@ -393,9 +432,6 @@ static TileExcp gen_rr_opcode(DisasContext *dc, unsigned opext,
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);
@@ -411,10 +447,6 @@ 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):
@@ -423,14 +455,13 @@ 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,