1 /* 2 * Copyright (c) 2010-2014 Wind River Systems, Inc. 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 #ifndef ZEPHYR_INCLUDE_ARCH_X86_IA32_EXPCEPTION_H_ 8 #define ZEPHYR_INCLUDE_ARCH_X86_IA32_EXPCEPTION_H_ 9 10 #ifndef _ASMLANGUAGE 11 #include <zephyr/types.h> 12 13 #ifdef __cplusplus 14 extern "C" { 15 #endif 16 17 /** 18 * @brief Exception Stack Frame 19 * 20 * A pointer to an "exception stack frame" (ESF) is passed as an argument 21 * to exception handlers registered via nanoCpuExcConnect(). As the system 22 * always operates at ring 0, only the EIP, CS and EFLAGS registers are pushed 23 * onto the stack when an exception occurs. 24 * 25 * The exception stack frame includes the volatile registers (EAX, ECX, and 26 * EDX) as well as the 5 non-volatile registers (EDI, ESI, EBX, EBP and ESP). 27 * Those registers are pushed onto the stack by _ExcEnt(). 28 */ 29 30 struct arch_esf { 31 #ifdef CONFIG_GDBSTUB 32 unsigned int ss; 33 unsigned int gs; 34 unsigned int fs; 35 unsigned int es; 36 unsigned int ds; 37 #endif 38 unsigned int esp; 39 unsigned int ebp; 40 unsigned int ebx; 41 unsigned int esi; 42 unsigned int edi; 43 unsigned int edx; 44 unsigned int eax; 45 unsigned int ecx; 46 unsigned int errorCode; 47 unsigned int eip; 48 unsigned int cs; 49 unsigned int eflags; 50 }; 51 52 extern unsigned int z_x86_exception_vector; 53 54 struct _x86_syscall_stack_frame { 55 uint32_t eip; 56 uint32_t cs; 57 uint32_t eflags; 58 59 /* These are only present if cs = USER_CODE_SEG */ 60 uint32_t esp; 61 uint32_t ss; 62 }; 63 64 #ifdef __cplusplus 65 } 66 #endif 67 68 #endif /* _ASMLANGUAGE */ 69 70 #endif /* ZEPHYR_INCLUDE_ARCH_X86_IA32_EXPCEPTION_H_ */ 71
