include: declare exported libkernel memory and thread APIs

include/ps5/libkernel.h

@@ -0,0 +1,73 @@
+/* Copyright (C) 2026 Mihawk
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ * Exported libkernel APIs used by PS5 homebrew. Error-returning SCE APIs
+ * return zero on success and an SCE error code on failure, not POSIX errno.
+ * Access to an exported API may still depend on the process privileges.
+ */
+#ifndef PS5_LIBKERNEL_H
+#define PS5_LIBKERNEL_H
+
+#include <stddef.h>
+#include <pthread.h>
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define PS5_KERNEL_PROT_CPU_READ 0x01
+#define PS5_KERNEL_PROT_CPU_WRITE 0x02
+#define PS5_KERNEL_PROT_CPU_EXEC 0x04
+#define PS5_KERNEL_PROT_GPU_READ 0x10
+#define PS5_KERNEL_PROT_GPU_WRITE 0x20
+
+#define PS5_KERNEL_MAP_FIXED 0x10
+
+#define PS5_KERNEL_DIRECT_TYPE_CPU 12
+
+#define PS5_KERNEL_PAGE_SIZE ((size_t)0x4000)
+#define PS5_KERNEL_DIRECT_ALIGNMENT ((size_t)0x10000)
+
+int32_t sceKernelAllocateDirectMemory(int64_t search_start, int64_t search_end, size_t length,
+                                      size_t alignment, int memory_type, int64_t *physical_start);
+int32_t sceKernelReleaseDirectMemory(int64_t start, size_t length);
+int32_t sceKernelMapDirectMemory(void **address, size_t length, int protection, int flags,
+                                 int64_t direct_start, size_t alignment);
+int64_t sceKernelGetDirectMemorySize(void);
+int32_t sceKernelAvailableDirectMemorySize(int64_t search_start, int64_t search_end, size_t alignment,
+                                           int64_t *physical_start, size_t *available);
+
+int32_t sceKernelMprotect(const void *address, size_t length, int protection);
+int32_t sceKernelReserveVirtualRange(void **address, size_t length, int flags, size_t alignment);
+int32_t sceKernelMunmap(void *address, size_t length);
+int32_t sceKernelQueryMemoryProtection(void *address, void **start, void **end, uint32_t *protection);
+
+int32_t sceKernelAvailableFlexibleMemorySize(size_t *available);
+int32_t sceKernelConfiguredFlexibleMemorySize(size_t *configured);
+
+int32_t sceKernelJitCreateSharedMemory(const char *name, size_t length, int max_protection, int *fd);
+int32_t sceKernelJitCreateAliasOfSharedMemory(int fd, int max_protection, int *alias_fd);
+int32_t sceKernelJitMapSharedMemory(int fd, int protection, void **address);
+
+uint64_t sceKernelReadTsc(void);
+
+int32_t sceKernelGetCurrentCpu(void);
+
+int32_t scePthreadGetaffinity(pthread_t thread, uint64_t *mask);
+int32_t scePthreadSetaffinity(pthread_t thread, uint64_t mask);
+uint64_t sceKernelGetTscFrequency(void);
+
+/* Set size to sizeof(struct ps5_kernel_sw_version) before querying. */
+struct ps5_kernel_sw_version {
+   size_t size;
+   char text[0x1c];
+   uint32_t version;
+};
+int32_t sceKernelGetSystemSwVersion(struct ps5_kernel_sw_version *version);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif