diff options
| author | Philippe Mathieu-Daudé <f4bug@amsat.org> | 2020-11-24 15:17:25 +0100 |
|---|---|---|
| committer | Philippe Mathieu-Daudé <f4bug@amsat.org> | 2021-01-14 17:13:53 +0100 |
| commit | aac357ec895bfb97b6edca999d91f49b5de5049a (patch) | |
| tree | 8d34d20a2c544235397520b7f081b6b3603daea3 /target/mips | |
| parent | 0e9524af2dd55bee8e10896a8579b29b7746efca (diff) | |
target/mips: Convert Rel6 Special2 opcode to decodetree
Special2 opcode have been removed from the Release 6.
Add a single decodetree entry for all the opcode class,
triggering Reserved Instruction if ever used.
Remove unreachable check_insn_opc_removed() call.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20201208203704.243704-7-f4bug@amsat.org>
Diffstat (limited to 'target/mips')
| -rw-r--r-- | target/mips/mips32r6.decode | 2 | ||||
| -rw-r--r-- | target/mips/rel6_translate.c | 7 | ||||
| -rw-r--r-- | target/mips/translate.c | 2 |
3 files changed, 9 insertions, 2 deletions
diff --git a/target/mips/mips32r6.decode b/target/mips/mips32r6.decode index d71a65f32c..dd7faf75ab 100644 --- a/target/mips/mips32r6.decode +++ b/target/mips/mips32r6.decode @@ -15,3 +15,5 @@ @lsa ...... rs:5 rt:5 rd:5 ... sa:2 ...... &rtype LSA 000000 ..... ..... ..... 000 .. 000101 @lsa + +REMOVED 011100 ----- ----- ----- ----- ------ # SPECIAL2 diff --git a/target/mips/rel6_translate.c b/target/mips/rel6_translate.c index da70ff9662..139a7524ee 100644 --- a/target/mips/rel6_translate.c +++ b/target/mips/rel6_translate.c @@ -18,6 +18,13 @@ #include "decode-mips32r6.c.inc" #include "decode-mips64r6.c.inc" +bool trans_REMOVED(DisasContext *ctx, arg_REMOVED *a) +{ + gen_reserved_instruction(ctx); + + return true; +} + static bool trans_LSA(DisasContext *ctx, arg_rtype *a) { return gen_lsa(ctx, a->rd, a->rt, a->rs, a->sa); diff --git a/target/mips/translate.c b/target/mips/translate.c index e3bb1e83ef..2f23ce4a36 100644 --- a/target/mips/translate.c +++ b/target/mips/translate.c @@ -27136,8 +27136,6 @@ static void decode_opc_special2_legacy(CPUMIPSState *env, DisasContext *ctx) int rs, rt, rd; uint32_t op1; - check_insn_opc_removed(ctx, ISA_MIPS_R6); - rs = (ctx->opcode >> 21) & 0x1f; rt = (ctx->opcode >> 16) & 0x1f; rd = (ctx->opcode >> 11) & 0x1f; |