1/* 2 * Copyright 2018, Data61 3 * Commonwealth Scientific and Industrial Research Organisation (CSIRO) 4 * ABN 41 687 119 230. 5 * 6 * This software may be distributed and modified according to the terms of 7 * the BSD 2-Clause license. Note that NO WARRANTY is provided. 8 * See "LICENSE_BSD2.txt" for details. 9 * 10 * @TAG(DATA61_BSD) 11 */ 12#pragma once 13 14#include <stdint.h> 15#include <sel4/sel4.h> 16#include <sel4/arch/pfIPC.h> 17#include <sel4/arch/exIPC.h> 18 19#define EXCEPT_IPC_SYS_MR_IP EXCEPT_IPC_SYS_MR_RIP 20#define ARCH_SYSCALL_INSTRUCTION_SIZE 4 21 22static inline int 23sel4utils_is_read_fault(void) 24{ 25 seL4_Word fsr = seL4_GetMR(seL4_VMFault_FSR); 26 return (fsr == 1 || fsr == 2 || fsr == 5); 27} 28 29static inline void 30sel4utils_set_instruction_pointer(seL4_UserContext *regs, seL4_Word value) 31{ 32 regs->pc = value; 33} 34 35static inline seL4_Word 36sel4utils_get_instruction_pointer(seL4_UserContext regs) 37{ 38 return regs.pc; 39} 40 41static inline seL4_Word 42sel4utils_get_sp(seL4_UserContext regs) 43{ 44 return regs.sp; 45} 46 47static inline void 48sel4utils_set_stack_pointer(seL4_UserContext *regs, seL4_Word value) 49{ 50 regs->sp = value; 51} 52 53