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220 lines
8 KiB
C
220 lines
8 KiB
C
/**
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* @file svc.h
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* @brief Wrappers for kernel syscalls.
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* @copyright libnx Authors
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*/
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#pragma once
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#include "../utils/types.h"
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/// Memory information structure.
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typedef struct {
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u64 addr; ///< Base address.
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u64 size; ///< Size.
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u32 type; ///< Memory type (see lower 8 bits of \ref MemoryState).
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u32 attr; ///< Memory attributes (see \ref MemoryAttribute).
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u32 perm; ///< Memory permissions (see \ref Permission).
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u32 device_refcount; ///< Device reference count.
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u32 ipc_refcount; ///< IPC reference count.
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u32 padding; ///< Padding.
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} MemoryInfo;
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/// Memory permission bitmasks.
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typedef enum {
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Perm_None = 0, ///< No permissions.
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Perm_R = BIT(0), ///< Read permission.
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Perm_W = BIT(1), ///< Write permission.
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Perm_X = BIT(2), ///< Execute permission.
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Perm_Rw = Perm_R | Perm_W, ///< Read/write permissions.
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Perm_Rx = Perm_R | Perm_X, ///< Read/execute permissions.
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Perm_DontCare = BIT(28), ///< Don't care
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} Permission;
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/// Secure monitor arguments.
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typedef struct {
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u64 X[8]; ///< Values of X0 through X7.
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} SecmonArgs;
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_Static_assert(sizeof(SecmonArgs) == 0x40, "SecmonArgs definition");
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#define DeviceName_SDMMC1A 19
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#define DeviceName_SDMMC2A 20
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#define DeviceName_SDMMC3A 21
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#define DeviceName_SDMMC4A 22
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Returns a virtual address mapped to a given IO range.
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* @return Result code.
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* @note Syscall number 0x55.
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* @warning This is a privileged syscall. Use \ref envIsSyscallHinted to check if it is available.
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* @warning Only exists on [10.0.0+]. For older versions use \ref svcLegacyQueryIoMapping.
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*/
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Result svcQueryIoMapping(u64* virtaddr, u64* out_size, u64 physaddr, u64 size);
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/**
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* @brief Returns a virtual address mapped to a given IO range.
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* @return Result code.
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* @note Syscall number 0x55.
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* @warning This is a privileged syscall. Use \ref envIsSyscallHinted to check if it is available.
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* @warning Only exists on [1.0.0-9.2.0]. For newer versions use \ref svcQueryIoMapping.
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*/
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Result svcLegacyQueryIoMapping(u64* virtaddr, u64 physaddr, u64 size);
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/**
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* @brief Attaches a device address space to a device.
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* @return Result code.
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* @note Syscall number 0x57.
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* @warning This is a privileged syscall. Use \ref envIsSyscallHinted to check if it is available.
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*/
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Result svcAttachDeviceAddressSpace(u64 device, Handle handle);
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/**
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* @brief Query information about an address. Will always fetch the lowest page-aligned mapping that contains the provided address.
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* @param[out] meminfo_ptr \ref MemoryInfo structure which will be filled in.
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* @param[out] pageinfo Page information which will be filled in.
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* @param[in] addr Address to query.
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* @return Result code.
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* @note Syscall number 0x06.
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*/
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Result svcQueryMemory(MemoryInfo* meminfo_ptr, u32 *pageinfo, u64 addr);
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/**
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* @brief Sets the memory permissions for the specified memory with the supplied process handle.
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* @param[in] proc Process handle.
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* @param[in] addr Address of the memory.
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* @param[in] size Size of the memory.
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* @param[in] perm Permissions (see \ref Permission).
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* @return Result code.
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* @remark This returns an error (0xD801) when \p perm is >0x5, hence -WX and RWX are not allowed.
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* @note Syscall number 0x73.
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* @warning This is a privileged syscall. Use \ref envIsSyscallHinted to check if it is available.
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*/
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Result svcSetProcessMemoryPermission(Handle proc, u64 addr, u64 size, u32 perm);
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/**
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* @brief Set the memory permissions of a (page-aligned) range of memory.
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* @param[in] addr Start address of the range.
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* @param[in] size Size of the range, in bytes.
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* @param[in] perm Permissions (see \ref Permission).
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* @return Result code.
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* @remark Perm_X is not allowed. Setting write-only is not allowed either (Perm_W).
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* This can be used to move back and forth between Perm_None, Perm_R and Perm_Rw.
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* @note Syscall number 0x01.
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*/
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Result svcSetMemoryPermission(void* addr, u64 size, u32 perm);
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/**
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* @brief Creates a thread.
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* @return Result code.
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* @note Syscall number 0x08.
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*/
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Result svcCreateThread(Handle* out, void* entry, void* arg, void* stack_top, int prio, int cpuid);
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/**
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* @brief Starts a freshly created thread.
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* @return Result code.
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* @note Syscall number 0x09.
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*/
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Result svcStartThread(Handle handle);
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/**
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* @brief Exits the current thread.
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* @note Syscall number 0x0A.
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*/
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void __attribute__((noreturn)) svcExitThread(void);
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/**
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* @brief Closes a handle, decrementing the reference count of the corresponding kernel object.
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* This might result in the kernel freeing the object.
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* @param handle Handle to close.
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* @return Result code.
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* @note Syscall number 0x16.
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*/
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Result svcCloseHandle(Handle handle);
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/**
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* @brief Waits on one or more synchronization objects, optionally with a timeout.
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* @return Result code.
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* @note Syscall number 0x18.
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* @note \p handleCount must not be greater than \ref MAX_WAIT_OBJECTS. This is a Horizon kernel limitation.
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* @note This is the raw syscall, which can be cancelled by \ref svcCancelSynchronization or other means. \ref waitHandles or \ref waitMultiHandle should normally be used instead.
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*/
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Result svcWaitSynchronization(s32* index, const Handle* handles, s32 handleCount, u64 timeout);
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/**
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* @brief Waits on a single synchronization object, optionally with a timeout.
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* @return Result code.
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* @note Wrapper for \ref svcWaitSynchronization.
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* @note This is the raw syscall, which can be cancelled by \ref svcCancelSynchronization or other means. \ref waitSingleHandle should normally be used instead.
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*/
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static inline Result svcWaitSynchronizationSingle(Handle handle, u64 timeout) {
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s32 tmp;
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return svcWaitSynchronization(&tmp, &handle, 1, timeout);
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}
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/**
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* @brief Creates an IPC session.
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* @return Result code.
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* @note Syscall number 0x40.
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* @warning This is a privileged syscall. Use \ref envIsSyscallHinted to check if it is available.
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*/
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Result svcCreateSession(Handle *server_handle, Handle *client_handle, u32 unk0, u64 unk1);//unk* are normally 0?
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/**
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* @brief Sends an IPC synchronization request to a session.
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* @return Result code.
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* @note Syscall number 0x21.
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*/
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Result svcSendSyncRequest(Handle session);
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/**
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* @brief Performs IPC input/output.
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* @return Result code.
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* @note Syscall number 0x43.
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* @warning This is a privileged syscall. Use \ref envIsSyscallHinted to check if it is available.
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*/
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Result svcReplyAndReceive(s32* index, const Handle* handles, s32 handleCount, Handle replyTarget, u64 timeout);
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/**
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* @brief Maps the src address from the supplied process handle into the current process.
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* @param[in] dst Address to which map the memory in the current process.
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* @param[in] proc Process handle.
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* @param[in] src Source mapping address.
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* @param[in] size Size of the memory.
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* @return Result code.
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* @remark This allows mapping code and rodata with RW- permission.
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* @note Syscall number 0x74.
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* @warning This is a privileged syscall. Use \ref envIsSyscallHinted to check if it is available.
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*/
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Result svcMapProcessMemory(void* dst, Handle proc, u64 src, u64 size);
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/**
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* @brief Undoes the effects of \ref svcMapProcessMemory.
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* @param[in] dst Destination mapping address
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* @param[in] proc Process handle.
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* @param[in] src Address of the memory in the process.
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* @param[in] size Size of the memory.
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* @return Result code.
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* @remark This allows mapping code and rodata with RW- permission.
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* @note Syscall number 0x75.
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* @warning This is a privileged syscall. Use \ref envIsSyscallHinted to check if it is available.
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*/
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Result svcUnmapProcessMemory(void* dst, Handle proc, u64 src, u64 size);
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/**
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* @brief Calls a secure monitor function (TrustZone, EL3).
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* @param regs Arguments to pass to the secure monitor.
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* @return Return value from the secure monitor.
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* @note Syscall number 0x7F.
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* @warning This is a privileged syscall. Use \ref envIsSyscallHinted to check if it is available.
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*/
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u64 svcCallSecureMonitor(SecmonArgs* regs);
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#ifdef __cplusplus
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}
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#endif
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///@}
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