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m68kfpu: Support all FSINCOS encodings, fix multiple bugs in FMOVEM. [R. Belmont]

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This commit is contained in:
arbee 2021-06-11 23:01:37 -04:00
parent b853222864
commit ff553b2b99
1 changed files with 21 additions and 25 deletions
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44
src/devices/cpu/m68000/m68kfpu.cpp
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@ -1165,6 +1165,13 @@ void m68000_base_device::WRITE_EA_FPE(int mode, int reg, floatx80 fpr, uint32 di
break; break;
} }
case 6: // (An) + (Xn) + d8
{
u32 ea = EA_AY_IX_32();
store_extended_float80(ea, fpr);
break;
}
case 7: case 7:
{ {
switch (reg) switch (reg)
@ -1600,7 +1607,14 @@ void m68000_base_device::fpgen_rm_reg(u16 w2)
m_icount -= 9; m_icount -= 9;
break; break;
} }
case 0x31: // FSINCOS case 0x30: // FSINCOS
case 0x31:
case 0x32:
case 0x33:
case 0x34:
case 0x35:
case 0x36:
case 0x37:
{ {
m_fpr[dst] = source; m_fpr[dst] = source;
floatx80_fsin(m_fpr[dst]); floatx80_fsin(m_fpr[dst]);
@ -1820,17 +1834,6 @@ void m68000_base_device::fmovem(u16 w2)
int mode = (w2 >> 11) & 0x3; int mode = (w2 >> 11) & 0x3;
int reglist = w2 & 0xff; int reglist = w2 & 0xff;
u32 mem_addr = 0;
switch (ea >> 3)
{
case 5: // (d16, An)
mem_addr= EA_AY_DI_32();
break;
case 6: // (An) + (Xn) + d8
mem_addr= EA_AY_IX_32();
break;
}
if (dir) // From FP regs to mem if (dir) // From FP regs to mem
{ {
switch (mode) switch (mode)
@ -1874,8 +1877,7 @@ void m68000_base_device::fmovem(u16 w2)
{ {
int imode = (ea >> 3) & 0x7; int imode = (ea >> 3) & 0x7;
int reg = (ea & 0x7); int reg = (ea & 0x7);
int di_mode = imode == 5; int di_mode = (imode == 5);
uint32 di_mode_ea = di_mode ? (REG_A()[reg] + MAKE_INT_16(m68ki_read_imm_16())) : 0; uint32 di_mode_ea = di_mode ? (REG_A()[reg] + MAKE_INT_16(m68ki_read_imm_16())) : 0;
for (i=0; i < 8; i++) for (i=0; i < 8; i++)
@ -1909,23 +1911,17 @@ void m68000_base_device::fmovem(u16 w2)
{ {
int imode = (ea >> 3) & 0x7; int imode = (ea >> 3) & 0x7;
int reg = (ea & 0x7); int reg = (ea & 0x7);
int di_mode = imode == 5; int di_mode = (imode == 5);
uint32 di_mode_ea = di_mode ? (REG_A()[reg] + MAKE_INT_16(m68ki_read_imm_16())) : 0; uint32 di_mode_ea = di_mode ? (REG_A()[reg] + MAKE_INT_16(m68ki_read_imm_16())) : 0;
for (i=0; i < 8; i++) for (i=0; i < 8; i++)
{ {
if (reglist & (1 << i)) if (reglist & (1 << i))
{ {
switch (ea >> 3)
{
case 5: // (d16, An)
case 6: // (An) + (Xn) + d8
m_fpr[7-i] = load_extended_float80(mem_addr);
mem_addr += 12;
break;
default:
m_fpr[7 - i] = READ_EA_FPE(imode, reg, di_mode_ea); m_fpr[7 - i] = READ_EA_FPE(imode, reg, di_mode_ea);
break; if (di_mode)
{
di_mode_ea += 12;
} }
m_icount -= 2; m_icount -= 2;
} }