sgilissen/llamaplayer
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

System: Support sideloading EXE files via BIOS patch

Browse Source
This commit is contained in:
Connor McLaughlin
2019-09-14 13:22:05 +10:00
parent ae43cc838b
commit 9f36384752
10 changed files with 252 additions and 62 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
src/pse/cpu_core.inl
View File

@ -5,8 +5,8 @@
namespace CPU {
template<MemoryAccessType type, MemoryAccessSize size, bool is_instruction_fetch>
void Core::DoMemoryAccess(VirtualMemoryAddress address, u32& value)
template<MemoryAccessType type, MemoryAccessSize size, bool is_instruction_fetch, bool raise_exceptions>
bool Core::DoMemoryAccess(VirtualMemoryAddress address, u32& value)
{
switch (address >> 29)
{
@ -15,13 +15,17 @@ void Core::DoMemoryAccess(VirtualMemoryAddress address, u32& value)
if constexpr (type == MemoryAccessType::Write)
{
if (m_cop0_regs.sr.Isc)
return;
return true;
}
if (!m_bus->DispatchAccess<type, size>(address, address & UINT32_C(0x1FFFFFFF), value))
{
Panic("Bus error");
return false;
}
return true;
}
break;
case 0x01: // KUSEG 512M-1024M
case 0x02: // KUSEG 1024M-1536M
@ -29,26 +33,36 @@ void Core::DoMemoryAccess(VirtualMemoryAddress address, u32& value)
{
// Above 512mb raises an exception.
Panic("Bad user access");
return false;
}
break;
case 0x04: // KSEG0 - physical memory cached
{
if constexpr (type == MemoryAccessType::Write)
{
if (m_cop0_regs.sr.Isc)
return;
return true;
}
if (!m_bus->DispatchAccess<type, size>(address, address & UINT32_C(0x1FFFFFFF), value))
{
Panic("Bus error");
return false;
}
return true;
}
break;
case 0x05: // KSEG1 - physical memory uncached
{
if (!m_bus->DispatchAccess<type, size>(address, address & UINT32_C(0x1FFFFFFF), value))
{
Panic("Bus error");
return false;
}
return true;
}
break;
@ -61,17 +75,19 @@ void Core::DoMemoryAccess(VirtualMemoryAddress address, u32& value)
value = m_cache_control;
else
WriteCacheControl(value);
return true;
}
else
{
Panic("KSEG2 access");
return false;
}
}
break;
default:
UnreachableCode();
break;
return false;
}
}