1 /*- 2 * Copyright (c) 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz. 7 * 8 * %sccs.include.redist.c% 9 * 10 * @(#)frame.h 8.1 (Berkeley) 06/11/93 11 */ 12 13 /* 14 * System stack frames. 15 */ 16 17 /* 18 * Exception/Trap Stack Frame 19 */ 20 21 struct trapframe { 22 int tf_es; 23 int tf_ds; 24 int tf_edi; 25 int tf_esi; 26 int tf_ebp; 27 int tf_isp; 28 int tf_ebx; 29 int tf_edx; 30 int tf_ecx; 31 int tf_eax; 32 int tf_trapno; 33 /* below portion defined in 386 hardware */ 34 int tf_err; 35 int tf_eip; 36 int tf_cs; 37 int tf_eflags; 38 /* below only when transitting rings (e.g. user to kernel) */ 39 int tf_esp; 40 int tf_ss; 41 }; 42 43 /* Interrupt stack frame */ 44 45 struct intrframe { 46 int if_vec; 47 int if_ppl; 48 int if_es; 49 int if_ds; 50 int if_edi; 51 int if_esi; 52 int if_ebp; 53 int :32; 54 int if_ebx; 55 int if_edx; 56 int if_ecx; 57 int if_eax; 58 int :32; /* for compat with trap frame - trapno */ 59 int :32; /* for compat with trap frame - err */ 60 /* below portion defined in 386 hardware */ 61 int if_eip; 62 int if_cs; 63 int if_eflags; 64 /* below only when transitting rings (e.g. user to kernel) */ 65 int if_esp; 66 int if_ss; 67 }; 68 69 /* 70 * Call Gate/System Call Stack Frame 71 */ 72 73 struct syscframe { 74 int sf_edi; 75 int sf_esi; 76 int sf_ebp; 77 int :32; /* redundant save of isp */ 78 int sf_ebx; 79 int sf_edx; 80 int sf_ecx; 81 int sf_eax; 82 int sf_eflags; 83 /* below portion defined in 386 hardware */ 84 /* int sf_args[N]; /* if call gate copy args enabled!*/ 85 int sf_eip; 86 int sf_cs; 87 /* below only when transitting rings (e.g. user to kernel) */ 88 int sf_esp; 89 int sf_ss; 90 }; 91