Line data    Source code

       1            0 : /*
       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_EXCEPTION_H_
       8              : #define ZEPHYR_INCLUDE_ARCH_X86_IA32_EXCEPTION_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            0 :         unsigned int ss;
      33            0 :         unsigned int gs;
      34            0 :         unsigned int fs;
      35            0 :         unsigned int es;
      36            0 :         unsigned int ds;
      37              : #endif
      38            0 :         unsigned int esp;
      39            0 :         unsigned int ebp;
      40            0 :         unsigned int ebx;
      41            0 :         unsigned int esi;
      42            0 :         unsigned int edi;
      43            0 :         unsigned int edx;
      44            0 :         unsigned int eax;
      45            0 :         unsigned int ecx;
      46            0 :         unsigned int errorCode;
      47            0 :         unsigned int eip;
      48            0 :         unsigned int cs;
      49            0 :         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_EXCEPTION_H_ */