1 /* 2 * Copyright (c) 2013-2014 Wind River Systems, Inc. 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 /** 8 * @file 9 * @brief ARM AArch32 Cortex-A and Cortex-R public exception handling 10 */ 11 12 #ifndef ZEPHYR_INCLUDE_ARCH_ARM_AARCH32_CORTEX_A_R_EXC_H_ 13 #define ZEPHYR_INCLUDE_ARCH_ARM_AARCH32_CORTEX_A_R_EXC_H_ 14 15 #ifdef _ASMLANGUAGE 16 GTEXT(z_arm_exc_exit); 17 #else 18 #include <zephyr/types.h> 19 20 #ifdef __cplusplus 21 extern "C" { 22 #endif 23 24 #if defined(CONFIG_FPU) && defined(CONFIG_FPU_SHARING) 25 26 /* Registers s16-s31 (d8-d15, q4-q7) must be preserved across subroutine calls. 27 * 28 * Registers s0-s15 (d0-d7, q0-q3) do not have to be preserved (and can be used 29 * for passing arguments or returning results in standard procedure-call variants). 30 * 31 * Registers d16-d31 (q8-q15), do not have to be preserved. 32 */ 33 struct __fpu_sf { 34 uint32_t s[16]; /* s0~s15 (d0-d7) */ 35 #ifdef CONFIG_VFP_FEATURE_REGS_S64_D32 36 uint64_t d[16]; /* d16~d31 */ 37 #endif 38 uint32_t fpscr; 39 uint32_t undefined; 40 }; 41 #endif 42 43 /* Additional register state that is not stacked by hardware on exception 44 * entry. 45 * 46 * These fields are ONLY valid in the ESF copy passed into z_arm_fatal_error(). 47 * When information for a member is unavailable, the field is set to zero. 48 */ 49 #if defined(CONFIG_EXTRA_EXCEPTION_INFO) 50 struct __extra_esf_info { 51 _callee_saved_t *callee; 52 uint32_t msp; 53 uint32_t exc_return; 54 }; 55 #endif /* CONFIG_EXTRA_EXCEPTION_INFO */ 56 57 struct __esf { 58 #if defined(CONFIG_EXTRA_EXCEPTION_INFO) 59 struct __extra_esf_info extra_info; 60 #endif 61 #if defined(CONFIG_FPU) && defined(CONFIG_FPU_SHARING) 62 struct __fpu_sf fpu; 63 #endif 64 struct __basic_sf { 65 sys_define_gpr_with_alias(a1, r0); 66 sys_define_gpr_with_alias(a2, r1); 67 sys_define_gpr_with_alias(a3, r2); 68 sys_define_gpr_with_alias(a4, r3); 69 sys_define_gpr_with_alias(ip, r12); 70 sys_define_gpr_with_alias(lr, r14); 71 sys_define_gpr_with_alias(pc, r15); 72 uint32_t xpsr; 73 } basic; 74 }; 75 76 extern uint32_t z_arm_coredump_fault_sp; 77 78 typedef struct __esf z_arch_esf_t; 79 80 extern void z_arm_exc_exit(bool fatal); 81 82 #ifdef __cplusplus 83 } 84 #endif 85 86 #endif /* _ASMLANGUAGE */ 87 88 #endif /* ZEPHYR_INCLUDE_ARCH_ARM_AARCH32_CORTEX_A_R_EXC_H_ */ 89
