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Merge pull request #3138 from wwylele/ipc-mapped-buffer

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Kernel/IPC: Implement MappedBuffer translation for HLE services that use the HLERequestContext architecture.
This commit is contained in:
Weiyi Wang
2017-12-03 11:33:48 +02:00
committed by GitHub
parent 466bec2d43 94ae0b1305
commit 14819d0b84
7 changed files with 319 additions and 125 deletions
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35
src/core/hle/kernel/hle_ipc.cpp
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@ -106,6 +106,12 @@ ResultCode HLERequestContext::PopulateFromIncomingCommandBuffer(const u32_le* sr
cmd_buf[i++] = source_address;
break;
}
case IPC::DescriptorType::MappedBuffer: {
u32 next_id = static_cast<u32>(request_mapped_buffers.size());
request_mapped_buffers.emplace_back(src_process, descriptor, src_cmdbuf[i], next_id);
cmd_buf[i++] = next_id;
break;
}
default:
UNIMPLEMENTED_MSG("Unsupported handle translation: 0x%08X", descriptor);
}
@ -165,6 +171,11 @@ ResultCode HLERequestContext::WriteToOutgoingCommandBuffer(u32_le* dst_cmdbuf, P
dst_cmdbuf[i++] = target_address;
break;
}
case IPC::DescriptorType::MappedBuffer: {
VAddr addr = request_mapped_buffers[cmd_buf[i]].address;
dst_cmdbuf[i++] = addr;
break;
}
default:
UNIMPLEMENTED_MSG("Unsupported handle translation: 0x%08X", descriptor);
}
@ -173,4 +184,28 @@ ResultCode HLERequestContext::WriteToOutgoingCommandBuffer(u32_le* dst_cmdbuf, P
return RESULT_SUCCESS;
}
MappedBuffer& HLERequestContext::GetMappedBuffer(u32 id_from_cmdbuf) {
ASSERT_MSG(id_from_cmdbuf < request_mapped_buffers.size(), "Mapped Buffer ID out of range!");
return request_mapped_buffers[id_from_cmdbuf];
}
MappedBuffer::MappedBuffer(const Process& process, u32 descriptor, VAddr address, u32 id)
: process(&process), address(address), id(id) {
IPC::MappedBufferDescInfo desc{descriptor};
size = desc.size;
perms = desc.perms;
}
void MappedBuffer::Read(void* dest_buffer, size_t offset, size_t size) {
ASSERT(perms & IPC::R);
ASSERT(offset + size <= this->size);
Memory::ReadBlock(*process, address + offset, dest_buffer, size);
}
void MappedBuffer::Write(const void* src_buffer, size_t offset, size_t size) {
ASSERT(perms & IPC::W);
ASSERT(offset + size <= this->size);
Memory::WriteBlock(*process, address + offset, src_buffer, size);
}
} // namespace Kernel