kaif_idthdl.s revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Companion to kaif_idt.c - the implementation of the trap and interrupt
* handlers. For the most part, these handlers do the same thing - they
* push a trap number onto the stack, followed by a jump to kaif_cmnint.
* Each trap and interrupt has its own handler because each one pushes a
* different number.
*/
#include <sys/asm_linkage.h>
#include <kmdb/kaif_asmutil.h>
/* Nothing in this file is of interest to lint. */
#if !defined(__lint)
/*
* The default ASM_ENTRY_ALIGN (16) wastes far too much space. Pay no
* attention to the fleet of nop's we're adding to each handler.
*/
#define ASM_ENTRY_ALIGN 8
/*
* We need the .align in ENTRY_NP (defined to be ASM_ENTRY_ALIGN) to match our
* manual .align (KAIF_MSR_PATCHOFF) in order to ensure that the space reserved
* at the beginning of the handler for code is exactly KAIF_MSR_PATCHOFF bytes
* long. Note that the #error below isn't supported by the preprocessor invoked
* by as(1), and won't stop the build, but it'll emit a noticeable error message
* which won't escape the filters.
*/
#if ASM_ENTRY_ALIGN != KAIF_MSR_PATCHOFF
#error "ASM_ENTRY_ALIGN != KAIF_MSR_PATCHOFF"
#endif
/*
* kaif_idt_patch will, on certain processors, replace the patch points below
* with MSR-clearing code. kaif_id_patch has intimate knowledge of the size of
* the nop hole, as well as the structure of the handlers. Do not change
* anything here without also changing kaif_idt_patch.
*/
/*
* Generic trap and interrupt handlers.
*/
#if defined(__amd64)
#define TRAP_NOERR(trapno) \
pushq $trapno
#define TRAP_ERR(trapno) \
pushq $0; \
pushq $trapno
#else /* __i386 */
#define TRAP_NOERR(trapno) \
pushl $trapno
#define TRAP_ERR(trapno) \
pushl $0; \
pushl $trapno
#endif
#define MKIVCT(n) \
ENTRY_NP(kaif_ivct/**/n/**/); \
TRAP_ERR(n); \
.align KAIF_MSR_PATCHOFF; \
KAIF_MSR_PATCH; \
jmp kaif_cmnint; \
SET_SIZE(kaif_ivct/**/n/**/)
#define MKTRAPHDLR(n) \
ENTRY_NP(kaif_trap/**/n); \
TRAP_ERR(n); \
.align KAIF_MSR_PATCHOFF; \
KAIF_MSR_PATCH; \
jmp kaif_cmnint; \
SET_SIZE(kaif_trap/**/n/**/)
#define MKTRAPERRHDLR(n) \
ENTRY_NP(kaif_traperr/**/n); \
TRAP_NOERR(n); \
.align KAIF_MSR_PATCHOFF; \
KAIF_MSR_PATCH; \
jmp kaif_cmnint; \
SET_SIZE(kaif_traperr/**/n)
#define MKNMIHDLR \
ENTRY_NP(kaif_int2); \
TRAP_NOERR(2); \
.align KAIF_MSR_PATCHOFF; \
KAIF_MSR_PATCH; \
jmp kaif_nmiint; \
SET_SIZE(kaif_int2)
#define MKINVALHDLR \
ENTRY_NP(kaif_invaltrap); \
TRAP_NOERR(255); \
.align KAIF_MSR_PATCHOFF; \
KAIF_MSR_PATCH; \
jmp kaif_cmnint; \
SET_SIZE(kaif_invaltrap)
/*
* The handlers themselves
*/
MKINVALHDLR
MKTRAPHDLR(0)
MKTRAPHDLR(1)
MKNMIHDLR/*2*/
MKTRAPHDLR(3)
MKTRAPHDLR(4)
MKTRAPHDLR(5)
MKTRAPHDLR(6)
MKTRAPHDLR(7)
MKTRAPHDLR(9)
MKTRAPHDLR(15)
MKTRAPHDLR(16)
MKTRAPHDLR(17)
MKTRAPHDLR(18)
MKTRAPHDLR(19)
MKTRAPHDLR(20)
MKTRAPERRHDLR(8)
MKTRAPERRHDLR(10)
MKTRAPERRHDLR(11)
MKTRAPERRHDLR(12)
MKTRAPERRHDLR(13)
MKTRAPERRHDLR(14)
.globl kaif_ivct_size
kaif_ivct_size:
.NWORD [kaif_ivct33-kaif_ivct32]
/* 10 billion and one interrupt handlers */
kaif_ivct_base:
MKIVCT(32); MKIVCT(33); MKIVCT(34); MKIVCT(35);
MKIVCT(36); MKIVCT(37); MKIVCT(38); MKIVCT(39);
MKIVCT(40); MKIVCT(41); MKIVCT(42); MKIVCT(43);
MKIVCT(44); MKIVCT(45); MKIVCT(46); MKIVCT(47);
MKIVCT(48); MKIVCT(49); MKIVCT(50); MKIVCT(51);
MKIVCT(52); MKIVCT(53); MKIVCT(54); MKIVCT(55);
MKIVCT(56); MKIVCT(57); MKIVCT(58); MKIVCT(59);
MKIVCT(60); MKIVCT(61); MKIVCT(62); MKIVCT(63);
MKIVCT(64); MKIVCT(65); MKIVCT(66); MKIVCT(67);
MKIVCT(68); MKIVCT(69); MKIVCT(70); MKIVCT(71);
MKIVCT(72); MKIVCT(73); MKIVCT(74); MKIVCT(75);
MKIVCT(76); MKIVCT(77); MKIVCT(78); MKIVCT(79);
MKIVCT(80); MKIVCT(81); MKIVCT(82); MKIVCT(83);
MKIVCT(84); MKIVCT(85); MKIVCT(86); MKIVCT(87);
MKIVCT(88); MKIVCT(89); MKIVCT(90); MKIVCT(91);
MKIVCT(92); MKIVCT(93); MKIVCT(94); MKIVCT(95);
MKIVCT(96); MKIVCT(97); MKIVCT(98); MKIVCT(99);
MKIVCT(100); MKIVCT(101); MKIVCT(102); MKIVCT(103);
MKIVCT(104); MKIVCT(105); MKIVCT(106); MKIVCT(107);
MKIVCT(108); MKIVCT(109); MKIVCT(110); MKIVCT(111);
MKIVCT(112); MKIVCT(113); MKIVCT(114); MKIVCT(115);
MKIVCT(116); MKIVCT(117); MKIVCT(118); MKIVCT(119);
MKIVCT(120); MKIVCT(121); MKIVCT(122); MKIVCT(123);
MKIVCT(124); MKIVCT(125); MKIVCT(126); MKIVCT(127);
MKIVCT(128); MKIVCT(129); MKIVCT(130); MKIVCT(131);
MKIVCT(132); MKIVCT(133); MKIVCT(134); MKIVCT(135);
MKIVCT(136); MKIVCT(137); MKIVCT(138); MKIVCT(139);
MKIVCT(140); MKIVCT(141); MKIVCT(142); MKIVCT(143);
MKIVCT(144); MKIVCT(145); MKIVCT(146); MKIVCT(147);
MKIVCT(148); MKIVCT(149); MKIVCT(150); MKIVCT(151);
MKIVCT(152); MKIVCT(153); MKIVCT(154); MKIVCT(155);
MKIVCT(156); MKIVCT(157); MKIVCT(158); MKIVCT(159);
MKIVCT(160); MKIVCT(161); MKIVCT(162); MKIVCT(163);
MKIVCT(164); MKIVCT(165); MKIVCT(166); MKIVCT(167);
MKIVCT(168); MKIVCT(169); MKIVCT(170); MKIVCT(171);
MKIVCT(172); MKIVCT(173); MKIVCT(174); MKIVCT(175);
MKIVCT(176); MKIVCT(177); MKIVCT(178); MKIVCT(179);
MKIVCT(180); MKIVCT(181); MKIVCT(182); MKIVCT(183);
MKIVCT(184); MKIVCT(185); MKIVCT(186); MKIVCT(187);
MKIVCT(188); MKIVCT(189); MKIVCT(190); MKIVCT(191);
MKIVCT(192); MKIVCT(193); MKIVCT(194); MKIVCT(195);
MKIVCT(196); MKIVCT(197); MKIVCT(198); MKIVCT(199);
MKIVCT(200); MKIVCT(201); MKIVCT(202); MKIVCT(203);
MKIVCT(204); MKIVCT(205); MKIVCT(206); MKIVCT(207);
MKIVCT(208); MKIVCT(209); MKIVCT(210); MKIVCT(211);
MKIVCT(212); MKIVCT(213); MKIVCT(214); MKIVCT(215);
MKIVCT(216); MKIVCT(217); MKIVCT(218); MKIVCT(219);
MKIVCT(220); MKIVCT(221); MKIVCT(222); MKIVCT(223);
MKIVCT(224); MKIVCT(225); MKIVCT(226); MKIVCT(227);
MKIVCT(228); MKIVCT(229); MKIVCT(230); MKIVCT(231);
MKIVCT(232); MKIVCT(233); MKIVCT(234); MKIVCT(235);
MKIVCT(236); MKIVCT(237); MKIVCT(238); MKIVCT(239);
MKIVCT(240); MKIVCT(241); MKIVCT(242); MKIVCT(243);
MKIVCT(244); MKIVCT(245); MKIVCT(246); MKIVCT(247);
MKIVCT(248); MKIVCT(249); MKIVCT(250); MKIVCT(251);
MKIVCT(252); MKIVCT(253); MKIVCT(254); MKIVCT(255);
#endif