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m68k: disassembler support for FTRAP. [R. Belmont]

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This commit is contained in:
arbee 2014-12-09 23:17:24 -05:00
parent 9adc2bef71
commit 93a92a7fc6
1 changed files with 27 additions and 0 deletions
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27
src/emu/cpu/m68000/m68kdasm.c
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@ -1718,6 +1718,32 @@ static void d68020_extb_32(void)
sprintf(g_dasm_str, "extb.l D%d; (2+)", g_cpu_ir&7);
}
static void d68881_ftrap(void)
{
UINT16 w2, w3;
UINT32 l2;
LIMIT_CPU_TYPES(M68020_PLUS);
w2 = read_imm_16();
switch (g_cpu_ir & 0x7)
{
case 2: // word operand
w3 = read_imm_16();
sprintf(g_dasm_str, "ftrap%s.w $%04x", g_cpcc[w2 & 0x3f], w3);
break;
case 3: // long word operand
l2 = read_imm_32();
sprintf(g_dasm_str, "ftrap%s.l $%08x", g_cpcc[w2 & 0x3f], l2);
break;
case 4: // no operand
sprintf(g_dasm_str, "ftrap%s", g_cpcc[w2 & 0x3f]);
break;
}
}
static void d68040_fpu(void)
{
char float_data_format[8][3] =
@ -3456,6 +3482,7 @@ static const opcode_struct g_opcode_info[] =
{d68020_bfins , 0xffc0, 0xefc0, 0xa78},
{d68020_bfset , 0xffc0, 0xeec0, 0xa78},
{d68020_bftst , 0xffc0, 0xe8c0, 0xa7b},
{d68881_ftrap , 0xfff8, 0xf278, 0x000},
{d68010_bkpt , 0xfff8, 0x4848, 0x000},
{d68000_bra_8 , 0xff00, 0x6000, 0x000},
{d68000_bra_16 , 0xffff, 0x6000, 0x000},