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target/mips: Convert Rel6 LWLE/LWRE/SWLE/SWRE opcodes to decodetree

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LWLE/LWRE/SWLE/SWRE (EVA) opcodes have been removed from
the Release 6. Add a single decodetree entry for the opcodes,
triggering Reserved Instruction if ever used.

Remove unreachable check_insn_opc_removed() calls.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20201208203704.243704-11-f4bug@amsat.org>
This commit is contained in:
Philippe Mathieu-Daudé 2020-11-26 11:54:30 +01:00
parent 9a7372e354
commit dd5697b2f9
2 changed files with 5 additions and 4 deletions
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5
target/mips/mips32r6.decode
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@ -20,6 +20,11 @@ REMOVED 010011 ----- ----- ----- ----- ------ # COP1X (COP3)
REMOVED 011100 ----- ----- ----- ----- ------ # SPECIAL2
REMOVED 011111 ----- ----- ---------- 011001 # LWLE
REMOVED 011111 ----- ----- ---------- 011010 # LWRE
REMOVED 011111 ----- ----- ---------- 100001 # SWLE
REMOVED 011111 ----- ----- ---------- 100010 # SWRE
REMOVED 100010 ----- ----- ---------------- # LWL
REMOVED 100110 ----- ----- ---------------- # LWR
REMOVED 101010 ----- ----- ---------------- # SWL

4
target/mips/translate.c
View File

@ -28121,8 +28121,6 @@ static void decode_opc_special3(CPUMIPSState *env, DisasContext *ctx)
switch (op1) {
case OPC_LWLE:
case OPC_LWRE:
check_insn_opc_removed(ctx, ISA_MIPS_R6);
/* fall through */
case OPC_LBUE:
case OPC_LHUE:
case OPC_LBE:
@ -28134,8 +28132,6 @@ static void decode_opc_special3(CPUMIPSState *env, DisasContext *ctx)
return;
case OPC_SWLE:
case OPC_SWRE:
check_insn_opc_removed(ctx, ISA_MIPS_R6);
/* fall through */
case OPC_SBE:
case OPC_SHE:
case OPC_SWE: