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68030 MMU configuration exception was incorrectly followed by f-line exception

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This commit is contained in:
Toni Wilen 2023-12-16 20:32:19 +02:00
parent 7861e3f16d
commit a333766bbc
3 changed files with 23 additions and 23 deletions
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20
cpummu30.cpp
View File

@ -333,7 +333,7 @@ static bool mmu_op30_invea(uae_u32 opcode)
return false;
}
bool mmu_op30_pmove (uaecptr pc, uae_u32 opcode, uae_u16 next, uaecptr extra)
int mmu_op30_pmove(uaecptr pc, uae_u32 opcode, uae_u16 next, uaecptr extra)
{
int preg = (next >> 10) & 31;
int rw = (next >> 9) & 1;
@ -341,13 +341,13 @@ bool mmu_op30_pmove (uaecptr pc, uae_u32 opcode, uae_u16 next, uaecptr extra)
int unused = (next & 0xff);
if (mmu_op30_invea(opcode))
return true;
return 1;
// unused low 8 bits must be zeroed
if (unused)
return true;
return 1;
// read and fd set?
if (rw && fd)
return true;
return 1;
#if MMU030_OP_DBG_MSG
switch (preg) {
@ -393,7 +393,7 @@ bool mmu_op30_pmove (uaecptr pc, uae_u32 opcode, uae_u16 next, uaecptr extra)
else {
tc_030 = x_get_long (extra);
if (mmu030_decode_tc(tc_030, true))
return true;
return -1;
}
break;
case 0x12: // SRP
@ -404,7 +404,7 @@ bool mmu_op30_pmove (uaecptr pc, uae_u32 opcode, uae_u16 next, uaecptr extra)
srp_030 = (uae_u64)x_get_long (extra) << 32;
srp_030 |= x_get_long (extra + 4);
if (mmu030_decode_rp(srp_030))
return true;
return -1;
}
break;
case 0x13: // CRP
@ -415,13 +415,13 @@ bool mmu_op30_pmove (uaecptr pc, uae_u32 opcode, uae_u16 next, uaecptr extra)
crp_030 = (uae_u64)x_get_long (extra) << 32;
crp_030 |= x_get_long (extra + 4);
if (mmu030_decode_rp(crp_030))
return true;
return -1;
}
break;
case 0x18: // MMUSR
if (fd) {
// FD must be always zero when MMUSR read or write
return true;
return 1;
}
if (rw)
x_put_word (extra, mmusr_030);
@ -446,14 +446,14 @@ bool mmu_op30_pmove (uaecptr pc, uae_u32 opcode, uae_u16 next, uaecptr extra)
break;
default:
write_log (_T("Bad PMOVE at %08x\n"),m68k_getpc());
return true;
return 1;
}
if (!fd && !rw && preg != 0x18) {
mmu030_flush_atc_all();
}
tt_enabled = (tt0_030 & TT_ENABLE) || (tt1_030 & TT_ENABLE);
return false;
return 0;
}
bool mmu_op30_ptest (uaecptr pc, uae_u32 opcode, uae_u16 next, uaecptr extra)

6
include/cpummu030.h
View File

@ -53,9 +53,9 @@ extern struct mmu030_access mmu030_ad[MAX_MMU030_ACCESS + 1];
void mmu030_page_fault(uaecptr addr, bool read, int flags, uae_u32 fc);
bool mmu_op30_pmove (uaecptr pc, uae_u32 opcode, uae_u16 next, uaecptr extra);
bool mmu_op30_ptest (uaecptr pc, uae_u32 opcode, uae_u16 next, uaecptr extra);
bool mmu_op30_pflush (uaecptr pc, uae_u32 opcode, uae_u16 next, uaecptr extra);
int mmu_op30_pmove(uaecptr pc, uae_u32 opcode, uae_u16 next, uaecptr extra);
bool mmu_op30_ptest(uaecptr pc, uae_u32 opcode, uae_u16 next, uaecptr extra);
bool mmu_op30_pflush(uaecptr pc, uae_u32 opcode, uae_u16 next, uaecptr extra);
typedef struct {
uae_u32 addr_base;

20
newcpu.cpp
View File

@ -4063,10 +4063,10 @@ static bool mmu_op30fake_pflush (uaecptr pc, uae_u32 opcode, uae_u16 next, uaecp
}
// 68030 (68851) MMU instructions only
bool mmu_op30 (uaecptr pc, uae_u32 opcode, uae_u16 extra, uaecptr extraa)
bool mmu_op30(uaecptr pc, uae_u32 opcode, uae_u16 extra, uaecptr extraa)
{
int type = extra >> 13;
bool fline = false;
int fline = 0;
switch (type)
{
@ -4074,28 +4074,28 @@ bool mmu_op30 (uaecptr pc, uae_u32 opcode, uae_u16 extra, uaecptr extraa)
case 2:
case 3:
if (currprefs.mmu_model)
fline = mmu_op30_pmove (pc, opcode, extra, extraa);
fline = mmu_op30_pmove(pc, opcode, extra, extraa);
else
fline = mmu_op30fake_pmove (pc, opcode, extra, extraa);
fline = mmu_op30fake_pmove(pc, opcode, extra, extraa);
break;
case 1:
if (currprefs.mmu_model)
fline = mmu_op30_pflush (pc, opcode, extra, extraa);
fline = mmu_op30_pflush(pc, opcode, extra, extraa);
else
fline = mmu_op30fake_pflush (pc, opcode, extra, extraa);
fline = mmu_op30fake_pflush(pc, opcode, extra, extraa);
break;
case 4:
if (currprefs.mmu_model)
fline = mmu_op30_ptest (pc, opcode, extra, extraa);
fline = mmu_op30_ptest(pc, opcode, extra, extraa);
else
fline = mmu_op30fake_ptest (pc, opcode, extra, extraa);
fline = mmu_op30fake_ptest(pc, opcode, extra, extraa);
break;
}
if (fline) {
if (fline > 0) {
m68k_setpc(pc);
op_illg(opcode);
}
return fline;
return fline != 0;
}
/* check if an address matches a ttr */