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m68k: disassemble PMOVE instruction (move to/from PMMU)

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This commit is contained in:
R. Belmont 2009-09-27 03:15:34 +00:00
parent 13af9cddb6
commit d12b0394b5
1 changed files with 59 additions and 1 deletions
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60
src/emu/cpu/m68000/m68kdasm.c
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@ -225,6 +225,10 @@ static const char *const g_cpcc[64] =
"?", "?", "?", "?", "?", "?", "?", "?" /* 111 */
};
static const char *const g_mmuregs[8] =
{
"tc", "drp", "srp", "crp", "cal", "val", "sccr", "acr"
};
/* ======================================================================== */
/* =========================== UTILITY FUNCTIONS ========================== */
@ -3015,6 +3019,59 @@ static void d68020_unpk_mm(void)
}
static void d68030_pmove(void)
{
char* str;
UINT16 modes = read_imm_16();
// do this after fetching the second PMOVE word so we properly get the 3rd if necessary
str = get_ea_mode_str_32(g_cpu_ir);
switch ((modes>>13) & 0x7)
{
case 0: // MC68030/040 form with FD bit
case 2: // MC68881 form, FD never set
if (modes & 0x0100)
{
if (modes & 0x0200)
{
sprintf(g_dasm_str, "pmovefd %s, %s", g_mmuregs[(modes>>10)&7], str);
}
else
{
sprintf(g_dasm_str, "pmovefd %s, %s", str, g_mmuregs[(modes>>10)&7]);
}
}
else
{
if (modes & 0x0200)
{
sprintf(g_dasm_str, "pmove %s, %s", g_mmuregs[(modes>>10)&7], str);
}
else
{
sprintf(g_dasm_str, "pmove %s, %s", str, g_mmuregs[(modes>>10)&7]);
}
}
break;
case 3: // MC68030 to/from status reg
if (modes & 0x0200)
{
sprintf(g_dasm_str, "pmove mmusr, %s", str);
}
else
{
sprintf(g_dasm_str, "pmove %s, mmusr", str);
}
break;
default:
sprintf(g_dasm_str, "pmove [unknown form] %s", str);
break;
}
}
/* ======================================================================== */
/* ======================= INSTRUCTION TABLE BUILDER ====================== */
@ -3037,7 +3094,7 @@ static void d68020_unpk_mm(void)
static const opcode_struct g_opcode_info[] =
{
/* opcode handler mask match ea mask */
/* opcode handler mask match ea mask */
{d68000_1010 , 0xf000, 0xa000, 0x000},
{d68000_1111 , 0xf000, 0xf000, 0x000},
{d68000_abcd_rr , 0xf1f8, 0xc100, 0x000},
@ -3338,6 +3395,7 @@ static const opcode_struct g_opcode_info[] =
{d68000_unlk , 0xfff8, 0x4e58, 0x000},
{d68020_unpk_rr , 0xf1f8, 0x8180, 0x000},
{d68020_unpk_mm , 0xf1f8, 0x8188, 0x000},
{d68030_pmove , 0xffc0, 0xf000, 0x278},
{0, 0, 0, 0}
};