diff options
| -rw-r--r-- | target/m68k/cpu.c | 2 | ||||
| -rw-r--r-- | target/m68k/cpu.h | 1 | ||||
| -rw-r--r-- | target/m68k/translate.c | 11 |
3 files changed, 14 insertions, 0 deletions
diff --git a/target/m68k/cpu.c b/target/m68k/cpu.c index fa10b6e4cd..f06892271f 100644 --- a/target/m68k/cpu.c +++ b/target/m68k/cpu.c @@ -130,6 +130,7 @@ static void m68020_cpu_initfn(Object *obj) m68k_set_feature(env, M68K_FEATURE_FPU); m68k_set_feature(env, M68K_FEATURE_CAS); m68k_set_feature(env, M68K_FEATURE_BKPT); + m68k_set_feature(env, M68K_FEATURE_RTD); } #define m68030_cpu_initfn m68020_cpu_initfn #define m68040_cpu_initfn m68020_cpu_initfn @@ -151,6 +152,7 @@ static void m68060_cpu_initfn(Object *obj) m68k_set_feature(env, M68K_FEATURE_FPU); m68k_set_feature(env, M68K_FEATURE_CAS); m68k_set_feature(env, M68K_FEATURE_BKPT); + m68k_set_feature(env, M68K_FEATURE_RTD); } static void m5208_cpu_initfn(Object *obj) diff --git a/target/m68k/cpu.h b/target/m68k/cpu.h index 809582212d..384ec5dc4a 100644 --- a/target/m68k/cpu.h +++ b/target/m68k/cpu.h @@ -251,6 +251,7 @@ enum m68k_features { M68K_FEATURE_FPU, M68K_FEATURE_CAS, M68K_FEATURE_BKPT, + M68K_FEATURE_RTD, }; static inline int m68k_feature(CPUM68KState *env, int feature) diff --git a/target/m68k/translate.c b/target/m68k/translate.c index 9f60fbc0db..ad4d4efb8d 100644 --- a/target/m68k/translate.c +++ b/target/m68k/translate.c @@ -2483,6 +2483,16 @@ DISAS_INSN(nop) { } +DISAS_INSN(rtd) +{ + TCGv tmp; + int16_t offset = read_im16(env, s); + + tmp = gen_load(s, OS_LONG, QREG_SP, 0); + tcg_gen_addi_i32(QREG_SP, QREG_SP, offset + 4); + gen_jmp(s, tmp); +} + DISAS_INSN(rts) { TCGv tmp; @@ -4904,6 +4914,7 @@ void register_m68k_insns (CPUM68KState *env) BASE(nop, 4e71, ffff); BASE(stop, 4e72, ffff); BASE(rte, 4e73, ffff); + INSN(rtd, 4e74, ffff, RTD); BASE(rts, 4e75, ffff); INSN(movec, 4e7b, ffff, CF_ISA_A); BASE(jump, 4e80, ffc0); |