np2/i386c/ia32/exception.c - diff

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Diff for /np2/i386c/ia32/exception.c between versions 1.21 and 1.32

version 1.21, 2008/03/22 04:03:07	version 1.32, 2011/12/29 13:32:12
Line 1	Line 1
/* $Id$ */

/*	/*
* Copyright (c) 2003 NONAKA Kimihiro	* Copyright (c) 2003 NONAKA Kimihiro
* All rights reserved.	* All rights reserved.
Line 63 static const int dftable[4][4] = {	Line 61 static const int dftable[4][4] = {
{ 1, 1, 1, 1, },	{ 1, 1, 1, 1, },
};	};

void	void CPUCALL
exception(int num, int error_code)	exception(int num, int error_code)
{	{
int errorp = 0;	int errorp = 0;
Line 76 exception(int num, int error_code)	Line 74 exception(int num, int error_code)
#endif	#endif

VERBOSE(("exception: -------------------------------------------------------------- start"));	VERBOSE(("exception: -------------------------------------------------------------- start"));
VERBOSE(("exception: %s, error_code = %x at %04x:%08x", exception_str[num], error_code, CPU_CS, CPU_PREV_EIP));	VERBOSE(("exception: %s, error_code = %x at %04x:%08x, %04x:%08x", exception_str[num], error_code, CPU_CS, CPU_PREV_EIP, CPU_SS, CPU_ESP));
VERBOSE(("%s", cpu_reg2str()));	VERBOSE(("%s", cpu_reg2str()));

CPU_STAT_EXCEPTION_COUNTER_INC();	CPU_STAT_EXCEPTION_COUNTER_INC();
Line 87 exception(int num, int error_code)	Line 85 exception(int num, int error_code)
}	}

switch (num) {	switch (num) {
case DE_EXCEPTION: /* (F) 輪遙巨仿□ */	case DE_EXCEPTION: /* (F) 輪遙巨仿□ */
case DB_EXCEPTION: /* (F/T) 犯田永弘 */	case DB_EXCEPTION: /* (F/T) 犯田永弘 */
case BR_EXCEPTION: /* (F) BOUND 及＇區陸 */	case BR_EXCEPTION: /* (F) BOUND 及＇區陸 */
case UD_EXCEPTION: /* (F) 拑躲左矢戊□玉 */	case UD_EXCEPTION: /* (F) 拑躲左矢戊□玉 */
case NM_EXCEPTION: /* (F) 犯田奶旦銀迕尕第 (FPU 互拑中) */	case NM_EXCEPTION: /* (F) 犯田奶旦銀迕尕第 (FPU 互拑中) */
case MF_EXCEPTION: /* (F) 忏⑹凝醒鰾巨仿□ */	case MF_EXCEPTION: /* (F) 忏⑹凝醒鰾巨仿□ */
CPU_EIP = CPU_PREV_EIP;	CPU_EIP = CPU_PREV_EIP;
	if (CPU_STATSAVE.cpu_stat.backout_sp)
	CPU_ESP = CPU_PREV_ESP;
/FALLTHROUGH/	/FALLTHROUGH/
case NMI_EXCEPTION: /* (I) NMI 喃曰慇心 */	case NMI_EXCEPTION: /* (I) NMI 喃曰慇心 */
case BP_EXCEPTION: /* (T) 皮伊□弁禾奶件玄 */	case BP_EXCEPTION: /* (T) 皮伊□弁禾奶件玄 */
case OF_EXCEPTION: /* (T) 左□田□白伕□ */	case OF_EXCEPTION: /* (T) 左□田□白伕□ */
errorp = 0;	errorp = 0;
break;	break;

case DF_EXCEPTION: /* (A) ’正’亥’鬺交’孕’鬺生 (errcode: 0) */	case DF_EXCEPTION: /* (A) 樍c怒押�(errcode: 0) */
errorp = 1;	errorp = 1;
error_code = 0;	error_code = 0;
break;	break;

case AC_EXCEPTION: /* (F) 失仿奶件丟件玄民尼永弁 (errcode: 0) */	case AC_EXCEPTION: /* (F) 槻＞樍孕槻﹜樍它樍﹝樍它樍啣丟槻央樍血仃 (errcode: 0) */
error_code = 0;	error_code = 0;
/FALLTHROUGH/	/FALLTHROUGH/
case TS_EXCEPTION: /* (F) 白左弁TSS (errcode) */	case TS_EXCEPTION: /* (F) 拑躲 TSS (errcode) */
case NP_EXCEPTION: /* (F) ’扔’□’漰韞�埏(errcode) */	case NP_EXCEPTION: /* (F) 本弘丟件玄尕箕 (errcode) */
case SS_EXCEPTION: /* (F) 旦正永弁本弘丟件玄白巧伙玄 (errcode) */	case SS_EXCEPTION: /* (F) 旦正永弁本弘丟件玄白巧伙玄 (errcode) */
case GP_EXCEPTION: /* (F) 域�忡賃拺陸 (errcode) */	case GP_EXCEPTION: /* (F) 域�忡賃拺陸 (errcode) */
case PF_EXCEPTION: /* (F) 矢□斥白巧伙玄 (errcode) */	case PF_EXCEPTION: /* (F) 矢□斥白巧伙玄 (errcode) */
CPU_EIP = CPU_PREV_EIP;	CPU_EIP = CPU_PREV_EIP;
	if (CPU_STATSAVE.cpu_stat.backout_sp)
	CPU_ESP = CPU_PREV_ESP;
errorp = 1;	errorp = 1;
break;	break;

Line 123 exception(int num, int error_code)	Line 125 exception(int num, int error_code)
break;	break;
}	}

if (CPU_STATSAVE.cpu_stat.backout_sp) {
VERBOSE(("exception: restore stack pointer."));
CPU_ESP = CPU_PREV_ESP;
}
CPU_STATSAVE.cpu_stat.backout_sp = 0;

if (CPU_STAT_EXCEPTION_COUNTER >= 2) {	if (CPU_STAT_EXCEPTION_COUNTER >= 2) {
if (dftable[exctype[CPU_STAT_PREV_EXCEPTION]][exctype[num]]) {	if (dftable[exctype[CPU_STAT_PREV_EXCEPTION]][exctype[num]]) {
num = DF_EXCEPTION;	num = DF_EXCEPTION;
Line 140 exception(int num, int error_code)	Line 136 exception(int num, int error_code)

VERBOSE(("exception: ---------------------------------------------------------------- end"));	VERBOSE(("exception: ---------------------------------------------------------------- end"));

interrupt(num, 0, errorp, error_code);	interrupt(num, INTR_TYPE_EXTINTR, errorp, error_code);
#if defined(IA32_SUPPORT_DEBUG_REGISTER)	#if defined(IA32_SUPPORT_DEBUG_REGISTER)
if (num != BP_EXCEPTION) {	if (num != BP_EXCEPTION) {
if (CPU_INST_OP32) {	if (CPU_INST_OP32) {
Line 153 exception(int num, int error_code)	Line 149 exception(int num, int error_code)
}	}

/*	/*
* ’它﹝扑’鬕仲’奶﹝扑’生﹝仲’甘’＝’弗’永’籈仿’末	* 槻它樍扑樍巧樍扔槻奶樍扑樍啣汗樍桀丰槻弗槻永樍尼樍拻切
*	*
* 31 16 15 14 13 12 8 7 5 4 0	* 31 16 15 14 13 12 8 7 5 4 0
* +------------------------------------+--+-----+----------+-----+---------+	* +------------------------------------+--+-----+----------+-----+---------+
* \| ’尼’交’扔’氾’生 31..16 \| P\| DPL \| 0 D 1 0 0\|0 0 0\|’巧’仲’韞\| 4	* \| 左白本永玄 31..16 \| P\| DPL \| 0 D 1 0 0\|0 0 0\|市它件玄 \| 4
* +------------------------------------+--+-----+----------+-----+---------+	* +------------------------------------+--+-----+----------+-----+---------+
* 31 16 15 0	* 31 16 15 0
* +------------------------------------+-----------------------------------+	* +------------------------------------+-----------------------------------+
* \| 本弘丟件玄’本伊弁正 \| 左白本永玄 15..0 \| 0	* \| 槻扔槻□樍﹝樍它樍啣汗槻扔樍乓槻永槻末 \| 槻尼樍忴公樍血亥 15..0 \| 0
* +------------------------------------+-----------------------------------+	* +------------------------------------+-----------------------------------+
*/	*/

/*	/*
* 它閬藾′’甘’＝’弗’永’籈仿’末	* 澭奶槻湊本扑槦末樍桀丰槻弗槻永樍尼樍拻切
*--	*--
* ’末’弗’永﹝仲’奶﹝扑’生	* 槻末槻弗槻永樍扔槻奶樍扑樍� *
* 31 16 15 14 13 12 8 7 0	* 31 16 15 14 13 12 8 7 0
* +------------------------------------+--+-----+----------+---------------+	* +------------------------------------+--+-----+----------+---------------+
Line 176 exception(int num, int error_code)	Line 172 exception(int num, int error_code)
* +------------------------------------+--+-----+----------+---------------+	* +------------------------------------+--+-----+----------+---------------+
* 31 16 15 0	* 31 16 15 0
* +------------------------------------+-----------------------------------+	* +------------------------------------+-----------------------------------+
* \| TSS 本弘丟件玄’本伊弁正 \| Reserved \| 0	* \| TSS 槻扔槻□樍﹝樍它樍啣汗槻扔樍乓槻永槻末 \| Reserved \| 0
* +------------------------------------+-----------------------------------+	* +------------------------------------+-----------------------------------+
*--	*--
* 它閬藾+ * 喃曰慇心’必□玄
*	*
* 31 16 15 14 13 12 8 7 5 4 0	* 31 16 15 14 13 12 8 7 5 4 0
* +------------------------------------+--+-----+----------+-----+---------+	* +------------------------------------+--+-----+----------+-----+---------+
* \| ’尼’交’扔’氾’生 31..16 \| P\| DPL \| 0 D 1 1 0\|0 0 0\|Reserved \| 4	* \| 槻尼樍忴公樍血亥 31..16 \| P\| DPL \| 0 D 1 1 0\|0 0 0\|Reserved \| 4
* +------------------------------------+--+-----+----------+-----+---------+	* +------------------------------------+--+-----+----------+-----+---------+
* 31 16 15 0	* 31 16 15 0
* +------------------------------------+-----------------------------------+	* +------------------------------------+-----------------------------------+
* \| ’扔’□’漰韞龰戎誑鴠砲 \| 左白本永玄 15..0 \| 0	* \| 槻扔槻□樍﹝樍它樍啣汗槻扔樍乓槻永槻末 \| 槻尼樍忴公樍血亥 15..0 \| 0
* +------------------------------------+-----------------------------------+	* +------------------------------------+-----------------------------------+
*--	*--
* ’生’穨氾’仿﹝仲’奶﹝扑’生	* 樍啣托樍血份樍扔槻奶樍扑樍� *
* 31 16 15 14 13 12 8 7 5 4 0	* 31 16 15 14 13 12 8 7 5 4 0
* +------------------------------------+--+-----+----------+-----+---------+	* +------------------------------------+--+-----+----------+-----+---------+
* \| 左白本永玄 31..16 \| P\| DPL \| 0 D 1 1 1\|0 0 0\|Reserved \| 4	* \| 槻尼樍忴公樍血亥 31..16 \| P\| DPL \| 0 D 1 1 1\|0 0 0\|Reserved \| 4
* +------------------------------------+--+-----+----------+-----+---------+	* +------------------------------------+--+-----+----------+-----+---------+
* 31 16 15 0	* 31 16 15 0
* +------------------------------------+-----------------------------------+	* +------------------------------------+-----------------------------------+
* \| ’扔’□’漰𢦀生﹝仲’扔’孎永’末 \| ’尼’交’扔’氾’生 15..0 \| 0	* \| 槻扔槻□樍﹝樍它樍啣汗槻扔樍乓槻永槻末 \| 槻尼樍忴公樍血亥 15..0 \| 0
* +------------------------------------+-----------------------------------+	* +------------------------------------+-----------------------------------+
*--	*--
* DPL : ’甘’＝’弗’永’籈仿’末瓦氾弁＞’孎伙’- * 左白本永玄 : 皿伕扑□斥乓’巨件玄伉’禾奶件玄引匹及左白本永玄	* DPL : 犯奴旦弁伉皿正冂腺伊矛伙
* P : 本弘丟件玄繡箕白仿弘	* 左白本永玄 : 皿伕扑□斥乓’巨件玄伉’禾奶件玄引匹及左白本永玄
* 本伊弁正 : 犯奴旦氾奴生□扑亦件’戊□玉’本弘丟件玄及本弘丟件玄’本伊弁正	* P : 本弘丟件玄繡箕白仿弘
* D : 必□玄及扔奶朮‘0 = 16 bit, 1 = 32 bit	* 本伊弁正 : 犯奴旦氾奴生□扑亦件’戊□玉’本弘丟件玄及本弘丟件玄’本伊弁正
	* D : 必□玄及扔奶朮‘0 = 16 bit, 1 = 32 bit
*/	*/

static void interrupt_task_gate(const descriptor_t *gsdp, int intrtype, int errorp, int error_code);	static void CPUCALL interrupt_task_gate(const descriptor_t *gsdp, int intrtype, int errorp, int error_code);
static void interrupt_intr_or_trap(const descriptor_t *gsdp, int intrtype, int errorp, int error_code);	static void CPUCALL interrupt_intr_or_trap(const descriptor_t *gsdp, int intrtype, int errorp, int error_code);

void	void CPUCALL
interrupt(int num, int intrtype, int errorp, int error_code)	interrupt(int num, int intrtype, int errorp, int error_code)
{	{
descriptor_t gsd;	descriptor_t gsd;
Line 222 interrupt(int num, int intrtype, int err	Line 218 interrupt(int num, int intrtype, int err

VERBOSE(("interrupt: num = 0x%02x, intrtype = %s, errorp = %s, error_code = %08x", num, intrtype ? "on" : "off", errorp ? "on" : "off", error_code));	VERBOSE(("interrupt: num = 0x%02x, intrtype = %s, errorp = %s, error_code = %08x", num, intrtype ? "on" : "off", errorp ? "on" : "off", error_code));

	CPU_SET_PREV_ESP();

if (!CPU_STAT_PM) {	if (!CPU_STAT_PM) {
/* real mode */	/* real mode */
CPU_WORKCLOCK(20);	CPU_WORKCLOCK(20);
Line 233 interrupt(int num, int intrtype, int err	Line 231 interrupt(int num, int intrtype, int err
}	}

if ((intrtype == INTR_TYPE_EXTINTR) && CPU_STAT_HLT) {	if ((intrtype == INTR_TYPE_EXTINTR) && CPU_STAT_HLT) {
	VERBOSE(("interrupt: reset HTL in real mode"));
CPU_EIP++;	CPU_EIP++;
CPU_STAT_HLT = 0;	CPU_STAT_HLT = 0;
}	}
Line 258 interrupt(int num, int intrtype, int err	Line 257 interrupt(int num, int intrtype, int err
#if defined(DEBUG)	#if defined(DEBUG)
if (num == 0x80) {	if (num == 0x80) {
/* Linux, FreeBSD, NetBSD, OpenBSD system call */	/* Linux, FreeBSD, NetBSD, OpenBSD system call */
VERBOSE(("interrupt: syscall no = %d\n%s", CPU_EAX, cpu_reg2str()));	VERBOSE(("interrupt: syscall# = %d\n%s", CPU_EAX, cpu_reg2str()));
}	}
#endif	#endif

Line 279 interrupt(int num, int intrtype, int err	Line 278 interrupt(int num, int intrtype, int err
VERBOSE(("interrupt: gate descripter is invalid."));	VERBOSE(("interrupt: gate descripter is invalid."));
EXCEPTION(GP_EXCEPTION, exc_errcode);	EXCEPTION(GP_EXCEPTION, exc_errcode);
}	}
if (!SEG_IS_PRESENT(&gsd)) {
VERBOSE(("interrupt: gate descriptor is not present."));
EXCEPTION(GP_EXCEPTION, exc_errcode);
}
if (!SEG_IS_SYSTEM(&gsd)) {	if (!SEG_IS_SYSTEM(&gsd)) {
VERBOSE(("interrupt: gate descriptor is not system segment."));	VERBOSE(("interrupt: gate descriptor is not system segment."));
EXCEPTION(GP_EXCEPTION, exc_errcode);	EXCEPTION(GP_EXCEPTION, exc_errcode);
Line 302 interrupt(int num, int intrtype, int err	Line 297 interrupt(int num, int intrtype, int err
break;	break;
}	}

if (gsd.dpl < CPU_STAT_CPL) {	/* 5.10.1.1. 拺陸▼喃曰慇心甩件玉仿’皿伕扑□斥乓及忡賃 */
VERBOSE(("interrupt: gate DPL(%d) < CPL(%d)", gsd.dpl, CPU_STAT_CPL));	if ((intrtype != INTR_TYPE_EXTINTR) && (gsd.dpl < CPU_STAT_CPL)) {
	VERBOSE(("interrupt: intrtype(%d) && DPL(%d) < CPL(%d)", intrtype, gsd.dpl, CPU_STAT_CPL));
EXCEPTION(GP_EXCEPTION, exc_errcode);	EXCEPTION(GP_EXCEPTION, exc_errcode);
}	}

/* 5.10.1.1. 拺陸▼喃曰慇心甩件玉仿’皿伕扑□斥乓及忡賃 */	if (!SEG_IS_PRESENT(&gsd)) {
if ((intrtype != INTR_TYPE_EXTINTR) && (gsd.dpl < CPU_STAT_CPL)) {	VERBOSE(("interrupt: gate descriptor is not present."));
VERBOSE(("interrupt: intrtype && DPL(%d) < CPL(%d)", gsd.dpl, CPU_STAT_CPL));	EXCEPTION(NP_EXCEPTION, exc_errcode);
EXCEPTION(GP_EXCEPTION, exc_errcode);
}	}

if (!intrtype && CPU_STAT_HLT) {	if ((intrtype == INTR_TYPE_EXTINTR) && CPU_STAT_HLT) {
	VERBOSE(("interrupt: reset HTL in protected mode"));
CPU_EIP++;	CPU_EIP++;
CPU_STAT_HLT = 0;	CPU_STAT_HLT = 0;
}	}
Line 337 interrupt(int num, int intrtype, int err	Line 333 interrupt(int num, int intrtype, int err

VERBOSE(("interrupt: ---------------------------------------------------------------- end"));	VERBOSE(("interrupt: ---------------------------------------------------------------- end"));
}	}

	CPU_CLEAR_PREV_ESP();
}	}

static void	static void CPUCALL
interrupt_task_gate(const descriptor_t *gsdp, int intrtype, int errorp, int error_code)	interrupt_task_gate(const descriptor_t *gsdp, int intrtype, int errorp, int error_code)
{	{
selector_t task_sel;	selector_t task_sel;
Line 347 interrupt_task_gate(const descriptor_t *	Line 345 interrupt_task_gate(const descriptor_t *

VERBOSE(("interrupt: TASK-GATE"));	VERBOSE(("interrupt: TASK-GATE"));

(void)intrtype;

rv = parse_selector(&task_sel, gsdp->u.gate.selector);	rv = parse_selector(&task_sel, gsdp->u.gate.selector);
if (rv < 0 \|\| task_sel.ldt \|\| !SEG_IS_SYSTEM(&task_sel.desc)) {	if (rv < 0 \|\| task_sel.ldt \|\| !SEG_IS_SYSTEM(&task_sel.desc)) {
VERBOSE(("interrupt: parse_selector (selector = %04x, rv = %d, %cDT, type = %s)", gsdp->u.gate.selector, rv, task_sel.ldt ? 'L' : 'G', task_sel.desc.s ? "code/data" : "system"));	VERBOSE(("interrupt: parse_selector (selector = %04x, rv = %d, %cDT, type = %s)", gsdp->u.gate.selector, rv, task_sel.ldt ? 'L' : 'G', task_sel.desc.s ? "code/data" : "system"));
Line 379 interrupt_task_gate(const descriptor_t *	Line 375 interrupt_task_gate(const descriptor_t *

task_switch(&task_sel, TASK_SWITCH_INTR);	task_switch(&task_sel, TASK_SWITCH_INTR);

	CPU_SET_PREV_ESP();

if (errorp) {	if (errorp) {
XPUSH0(error_code);	XPUSH0(error_code);
}	}

	/* out of range */
	if (CPU_EIP > CPU_STAT_CS_LIMIT) {
	VERBOSE(("interrupt: new_ip is out of range. new_ip = %08x, limit = %08x", CPU_EIP, CPU_STAT_CS_LIMIT));
	EXCEPTION(GP_EXCEPTION, 0);
	}
}	}

static void	static void CPUCALL
interrupt_intr_or_trap(const descriptor_t *gsdp, int intrtype, int errorp, int error_code)	interrupt_intr_or_trap(const descriptor_t *gsdp, int intrtype, int errorp, int error_code)
{	{
selector_t cs_sel, ss_sel;	selector_t cs_sel, ss_sel;
Line 426 interrupt_intr_or_trap(const descriptor_	Line 430 interrupt_intr_or_trap(const descriptor_
break;	break;
}	}

exc_errcode = cs_sel.idx;	exc_errcode = gsdp->u.gate.selector & ~3;
if (intrtype == INTR_TYPE_EXTINTR)	if (intrtype == INTR_TYPE_EXTINTR)
exc_errcode++;	exc_errcode++;

Line 580 interrupt_intr_or_trap(const descriptor_	Line 584 interrupt_intr_or_trap(const descriptor_
EXCEPTION(GP_EXCEPTION, exc_errcode);	EXCEPTION(GP_EXCEPTION, exc_errcode);
}	}
if (!SEG_IS_CONFORMING_CODE(&cs_sel.desc) && (cs_sel.desc.dpl != CPU_STAT_CPL)) {	if (!SEG_IS_CONFORMING_CODE(&cs_sel.desc) && (cs_sel.desc.dpl != CPU_STAT_CPL)) {
VERBOSE(("interrupt: %sCONFORMING-CODE-SEGMENT(%s) && DPL[CS](%d) != CPL", SEG_IS_CONFORMING_CODE(&cs_sel.desc) ? "" : "NON-", cs_sel.desc.dpl, CPU_STAT_CPL));	VERBOSE(("interrupt: %sCONFORMING-CODE-SEGMENT(%d) && DPL[CS](%d) != CPL", SEG_IS_CONFORMING_CODE(&cs_sel.desc) ? "" : "NON-", cs_sel.desc.dpl, CPU_STAT_CPL));
EXCEPTION(GP_EXCEPTION, exc_errcode);	EXCEPTION(GP_EXCEPTION, exc_errcode);
}	}

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	Added in v.1.32