Merge pull request #731 from yuriks/app-info

Kernel: Process class and ExHeader caps parsing

1 files changed, 96 insertions, 0 deletions

diff --git a/src/core/hle/kernel/process.cpp b/src/core/hle/kernel/process.cpp
new file mode 100644
index 000000000..a444e22e5
--- /dev/null
+++ b/src/core/hle/kernel/process.cpp
@@ -0,0 +1,96 @@
+// Copyright 2015 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/assert.h"
+#include "common/common_funcs.h"
+#include "common/logging/log.h"
+
+#include "core/hle/kernel/process.h"
+#include "core/hle/kernel/thread.h"
+#include "core/mem_map.h"
+
+namespace Kernel {
+
+SharedPtr<Process> Process::Create(std::string name, u64 program_id) {
+    SharedPtr<Process> process(new Process);
+
+    process->name = std::move(name);
+    process->program_id = program_id;
+
+    process->flags.raw = 0;
+    process->flags.memory_region = MemoryRegion::APPLICATION;
+
+    return process;
+}
+
+void Process::ParseKernelCaps(const u32* kernel_caps, size_t len) {
+    for (int i = 0; i < len; ++i) {
+        u32 descriptor = kernel_caps[i];
+        u32 type = descriptor >> 20;
+
+        if (descriptor == 0xFFFFFFFF) {
+            // Unused descriptor entry
+            continue;
+        } else if ((type & 0xF00) == 0xE00) { // 0x0FFF
+            // Allowed interrupts list
+            LOG_WARNING(Loader, "ExHeader allowed interrupts list ignored");
+        } else if ((type & 0xF80) == 0xF00) { // 0x07FF
+            // Allowed syscalls mask
+            unsigned int index = ((descriptor >> 24) & 7) * 24;
+            u32 bits = descriptor & 0xFFFFFF;
+
+            while (bits && index < svc_access_mask.size()) {
+                svc_access_mask.set(index, bits & 1);
+                ++index; bits >>= 1;
+            }
+        } else if ((type & 0xFF0) == 0xFE0) { // 0x00FF
+            // Handle table size
+            handle_table_size = descriptor & 0x3FF;
+        } else if ((type & 0xFF8) == 0xFF0) { // 0x007F
+            // Misc. flags
+            flags.raw = descriptor & 0xFFFF;
+        } else if ((type & 0xFFE) == 0xFF8) { // 0x001F
+            // Mapped memory range
+            if (i+1 >= len || ((kernel_caps[i+1] >> 20) & 0xFFE) != 0xFF8) {
+                LOG_WARNING(Loader, "Incomplete exheader memory range descriptor ignored.");
+                continue;
+            }
+            u32 end_desc = kernel_caps[i+1];
+            ++i; // Skip over the second descriptor on the next iteration
+
+            AddressMapping mapping;
+            mapping.address = descriptor << 12;
+            mapping.size = (end_desc << 12) - mapping.address;
+            mapping.writable = descriptor & BIT(20);
+            mapping.unk_flag = end_desc & BIT(20);
+
+            address_mappings.push_back(mapping);
+        } else if ((type & 0xFFF) == 0xFFE) { // 0x000F
+            // Mapped memory page
+            AddressMapping mapping;
+            mapping.address = descriptor << 12;
+            mapping.size = Memory::PAGE_SIZE;
+            mapping.writable = true; // TODO: Not sure if correct
+            mapping.unk_flag = false;
+        } else if ((type & 0xFE0) == 0xFC0) { // 0x01FF
+            // Kernel version
+            int minor = descriptor & 0xFF;
+            int major = (descriptor >> 8) & 0xFF;
+            LOG_INFO(Loader, "ExHeader kernel version ignored: %d.%d", major, minor);
+        } else {
+            LOG_ERROR(Loader, "Unhandled kernel caps descriptor: 0x%08X", descriptor);
+        }
+    }
+}
+
+void Process::Run(VAddr entry_point, s32 main_thread_priority, u32 stack_size) {
+    Kernel::SetupMainThread(stack_size, entry_point, main_thread_priority);
+}
+
+Kernel::Process::Process() {}
+Kernel::Process::~Process() {}
+
+SharedPtr<Process> g_current_process;
+
+}