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target/mips/tx79: Move MTHI1 / MTLO1 opcodes to decodetree 

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210214175912.732946-10-f4bug@amsat.org>
This commit is contained in:
Philippe Mathieu-Daudé 2021-02-14 17:20:19 +01:00
parent ffc672aa97
commit 1f9408d550
3 changed files with 17 additions and 25 deletions
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25
target/mips/translate.c
View File

@ -1360,8 +1360,6 @@ enum {
MMI_OPC_PLZCW = 0x04 | MMI_OPC_CLASS_MMI,
MMI_OPC_CLASS_MMI0 = 0x08 | MMI_OPC_CLASS_MMI,
MMI_OPC_CLASS_MMI2 = 0x09 | MMI_OPC_CLASS_MMI,
MMI_OPC_MTHI1 = 0x11 | MMI_OPC_CLASS_MMI, /* Same minor as OPC_MTHI */
MMI_OPC_MTLO1 = 0x13 | MMI_OPC_CLASS_MMI, /* Same minor as OPC_MTLO */
MMI_OPC_MULT1 = 0x18 | MMI_OPC_CLASS_MMI, /* Same minor as OPC_MULT */
MMI_OPC_MULTU1 = 0x19 | MMI_OPC_CLASS_MMI, /* Same min. as OPC_MULTU */
MMI_OPC_DIV1 = 0x1A | MMI_OPC_CLASS_MMI, /* Same minor as OPC_DIV */
@ -3462,25 +3460,6 @@ static void gen_shift(DisasContext *ctx, uint32_t opc,
tcg_temp_free(t1);
}
#if defined(TARGET_MIPS64)
/* Copy GPR to and from TX79 HI1/LO1 register. */
static void gen_HILO1_tx79(DisasContext *ctx, uint32_t opc, int reg)
{
switch (opc) {
case MMI_OPC_MTHI1:
gen_load_gpr(cpu_HI[1], reg);
break;
case MMI_OPC_MTLO1:
gen_load_gpr(cpu_LO[1], reg);
break;
default:
MIPS_INVAL("mfthilo1 TX79");
gen_reserved_instruction(ctx);
break;
}
}
#endif
/* Arithmetic on HI/LO registers */
static void gen_HILO(DisasContext *ctx, uint32_t opc, int acc, int reg)
{
@ -25108,10 +25087,6 @@ static void decode_mmi(CPUMIPSState *env, DisasContext *ctx)
case MMI_OPC_DIVU1:
gen_div1_tx79(ctx, opc, rs, rt);
break;
case MMI_OPC_MTLO1:
case MMI_OPC_MTHI1:
gen_HILO1_tx79(ctx, opc, rs);
break;
case MMI_OPC_PLZCW: /* TODO: MMI_OPC_PLZCW */
case MMI_OPC_PMFHL: /* TODO: MMI_OPC_PMFHL */
case MMI_OPC_PMTHL: /* TODO: MMI_OPC_PMTHL */

3
target/mips/tx79.decode
View File

@ -17,9 +17,12 @@
# Named instruction formats. These are generally used to
# reduce the amount of duplication between instruction patterns.
@rs ...... rs:5 ..... .......... ...... &rtype rt=0 rd=0 sa=0
@rd ...... .......... rd:5 ..... ...... &rtype rs=0 rt=0 sa=0
###########################################################################
MFHI1 011100 0000000000 ..... 00000 010000 @rd
MTHI1 011100 ..... 0000000000 00000 010001 @rs
MFLO1 011100 0000000000 ..... 00000 010010 @rd
MTLO1 011100 ..... 0000000000 00000 010011 @rs

14
target/mips/tx79_translate.c
View File

@ -35,3 +35,17 @@ static bool trans_MFLO1(DisasContext *ctx, arg_rtype *a)
return true;
}
static bool trans_MTHI1(DisasContext *ctx, arg_rtype *a)
{
gen_load_gpr(cpu_HI[1], a->rs);
return true;
}
static bool trans_MTLO1(DisasContext *ctx, arg_rtype *a)
{
gen_load_gpr(cpu_LO[1], a->rs);
return true;
}