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/*
* Copyright (c) 2011, 2012 Richard Braun.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*
* Trap (interrupt and exception) handling.
*/
#ifndef _X86_TRAP_H
#define _X86_TRAP_H
/*
* Architecture defined traps.
*/
#define TRAP_DE 0 /* Divide Error */
#define TRAP_DB 1 /* Debug */
#define TRAP_NMI 2 /* NMI Interrupt */
#define TRAP_BP 3 /* Breakpoint */
#define TRAP_OF 4 /* Overflow */
#define TRAP_BR 5 /* BOUND Range Exceeded */
#define TRAP_UD 6 /* Invalid Opcode (Undefined Opcode) */
#define TRAP_NM 7 /* Device Not Available (No Math Coprocessor) */
#define TRAP_DF 8 /* Double Fault */
#define TRAP_TS 10 /* Invalid TSS */
#define TRAP_NP 11 /* Segment Not Present */
#define TRAP_SS 12 /* Stack-Segment Fault */
#define TRAP_GP 13 /* General Protection */
#define TRAP_PF 14 /* Page Fault */
#define TRAP_MF 16 /* x87 FPU Floating-Point Error (Math Fault) */
#define TRAP_AC 17 /* Alignment Check */
#define TRAP_MC 18 /* Machine Check */
#define TRAP_XM 19 /* SIMD Floating-Point Exception */
/*
* Interrupts reserved for the legacy PIC.
*/
#define TRAP_PIC_BASE 32
/*
* System defined traps.
*/
#define TRAP_LAPIC_TIMER 253
#define TRAP_LAPIC_ERROR 254
#define TRAP_LAPIC_SPURIOUS 255
#ifndef __ASSEMBLER__
#include <kern/macros.h>
#ifdef __LP64__
struct trap_frame {
unsigned long rax;
unsigned long rbx;
unsigned long rcx;
unsigned long rdx;
unsigned long rbp;
unsigned long rsi;
unsigned long rdi;
unsigned long r8;
unsigned long r9;
unsigned long r10;
unsigned long r11;
unsigned long r12;
unsigned long r13;
unsigned long r14;
unsigned long r15;
unsigned long vector;
unsigned long error;
unsigned long rip;
unsigned long cs;
unsigned long rflags;
unsigned long rsp;
unsigned long ss;
} __packed;
#else /* __LP64__ */
struct trap_frame {
unsigned long eax;
unsigned long ebx;
unsigned long ecx;
unsigned long edx;
unsigned long ebp;
unsigned long esi;
unsigned long edi;
unsigned long ds;
unsigned long es;
unsigned long fs;
unsigned long gs;
unsigned long vector;
unsigned long error;
unsigned long eip;
unsigned long cs;
unsigned long eflags;
unsigned long esp; /* esp and ss are undefined if trapped in kernel */
unsigned long ss;
} __packed;
#endif /* __LP64__ */
/*
* Set up the trap module.
*/
void trap_setup(void);
/*
* Unified trap entry point.
*/
void trap_main(struct trap_frame *frame);
/*
* Display the content of a trap frame.
*/
void trap_frame_show(struct trap_frame *frame);
/*
* Load a context saved in a trap frame.
*
* The caller context is lost.
*/
void __noreturn trap_load(struct trap_frame *frame);
#endif /* __ASSEMBLER__ */
#endif /* _X86_TRAP_H */
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