diff options
Diffstat (limited to 'target')
| -rw-r--r-- | target/m68k/cpu.c | 2 | ||||
| -rw-r--r-- | target/m68k/cpu.h | 1 | ||||
| -rw-r--r-- | target/m68k/translate.c | 46 |
3 files changed, 49 insertions, 0 deletions
diff --git a/target/m68k/cpu.c b/target/m68k/cpu.c index 6a80be009b..3026714471 100644 --- a/target/m68k/cpu.c +++ b/target/m68k/cpu.c @@ -113,6 +113,7 @@ static void m68000_cpu_initfn(Object *obj) m68k_set_feature(env, M68K_FEATURE_M68000); m68k_set_feature(env, M68K_FEATURE_USP); m68k_set_feature(env, M68K_FEATURE_WORD_INDEX); + m68k_set_feature(env, M68K_FEATURE_MOVEP); } static void m68020_cpu_initfn(Object *obj) @@ -135,6 +136,7 @@ static void m68020_cpu_initfn(Object *obj) m68k_set_feature(env, M68K_FEATURE_BKPT); m68k_set_feature(env, M68K_FEATURE_RTD); m68k_set_feature(env, M68K_FEATURE_CHK2); + m68k_set_feature(env, M68K_FEATURE_MOVEP); } #define m68030_cpu_initfn m68020_cpu_initfn diff --git a/target/m68k/cpu.h b/target/m68k/cpu.h index 627fb787b6..1d79885222 100644 --- a/target/m68k/cpu.h +++ b/target/m68k/cpu.h @@ -492,6 +492,7 @@ enum m68k_features { M68K_FEATURE_RTD, M68K_FEATURE_CHK2, M68K_FEATURE_M68040, /* instructions specific to MC68040 */ + M68K_FEATURE_MOVEP, }; static inline int m68k_feature(CPUM68KState *env, int feature) diff --git a/target/m68k/translate.c b/target/m68k/translate.c index 34db97b8a0..70c7583621 100644 --- a/target/m68k/translate.c +++ b/target/m68k/translate.c @@ -2078,6 +2078,51 @@ DISAS_INSN(movem) tcg_temp_free(addr); } +DISAS_INSN(movep) +{ + uint8_t i; + int16_t displ; + TCGv reg; + TCGv addr; + TCGv abuf; + TCGv dbuf; + + displ = read_im16(env, s); + + addr = AREG(insn, 0); + reg = DREG(insn, 9); + + abuf = tcg_temp_new(); + tcg_gen_addi_i32(abuf, addr, displ); + dbuf = tcg_temp_new(); + + if (insn & 0x40) { + i = 4; + } else { + i = 2; + } + + if (insn & 0x80) { + for ( ; i > 0 ; i--) { + tcg_gen_shri_i32(dbuf, reg, (i - 1) * 8); + tcg_gen_qemu_st8(dbuf, abuf, IS_USER(s)); + if (i > 1) { + tcg_gen_addi_i32(abuf, abuf, 2); + } + } + } else { + for ( ; i > 0 ; i--) { + tcg_gen_qemu_ld8u(dbuf, abuf, IS_USER(s)); + tcg_gen_deposit_i32(reg, reg, dbuf, (i - 1) * 8, 8); + if (i > 1) { + tcg_gen_addi_i32(abuf, abuf, 2); + } + } + } + tcg_temp_free(abuf); + tcg_temp_free(dbuf); +} + DISAS_INSN(bitop_im) { int opsize; @@ -5678,6 +5723,7 @@ void register_m68k_insns (CPUM68KState *env) BASE(bitop_reg, 0140, f1c0); BASE(bitop_reg, 0180, f1c0); BASE(bitop_reg, 01c0, f1c0); + INSN(movep, 0108, f138, MOVEP); INSN(arith_im, 0280, fff8, CF_ISA_A); INSN(arith_im, 0200, ff00, M68000); INSN(undef, 02c0, ffc0, M68000); |