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C/C++

BOOK.PS：源码内容

10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
900 V
7 LST
(06315)210 648 A
(cli)126 1362 A
2370(!)S
(disable)294 2454 A
(interrupts)420 2790 A
990 V
(06316)210 648 A
1080 V
(06317)210 648 A
1026(!)S
(Fall)168 1110 A
(into)168 1320 A
(code)168 1530 A
1740(to)S
(restart)294 1866 A
(proc/task)378 2202 A
(running.)336 2622 A
1170 V
(06318)210 648 A
1260 V
(06319)210 648 A
(!*===========================================================================*)3276 1026 A
1350 V
(06320)210 648 A
1026(!*)S
(restart)294 2370 A
4260(*)S
1440 V
(06321)210 648 A
(!*===========================================================================*)3276 1026 A
1530 V
(06322)210 648 A
(_restart:)378 1026 A
1620 V
(06323)210 648 A
1710 V
(06324)210 648 A
1026(!)S
(Flush)210 1110 A
(any)126 1362 A
(held-up)294 1530 A
(interrupts.)462 1866 A
1800 V
(06325)210 648 A
1026(!)S
(This)168 1110 A
(reenables)378 1320 A
(interrupts,)462 1740 A
2244(so)S
(the)126 2370 A
(current)294 2538 A
(interrupt)378 2874 A
(handler)294 3294 A
(may)126 3630 A
(reenter.)336 3798 A
1890 V
(06326)210 648 A
1026(!)S
(This)168 1110 A
(does)168 1320 A
(not)126 1530 A
(matter,)294 1698 A
(because)294 2034 A
(the)126 2370 A
(current)294 2538 A
(handler)294 2874 A
3210(is)S
(about)210 3336 A
3588(to)S
(exit)168 3714 A
(and)126 3924 A
4092(no)S
1980 V
(06327)210 648 A
1026(!)S
(other)210 1110 A
(handlers)336 1362 A
(can)126 1740 A
(reenter)294 1908 A
(since)210 2244 A
(flushing)336 2496 A
2874(is)S
(only)168 3000 A
(done)168 3210 A
(when)168 3420 A
(k_reenter)378 3630 A
4050(==)S
4176(0.)S
2070 V
(06328)210 648 A
2160 V
(06329)210 648 A
(cmp)126 1362 A
((_held_head),)546 1698 A
2286(0)S
2370(!)S
2454(do)S
(fast)168 2580 A
(test)168 2790 A
3000(to)S
(usually)294 3126 A
(avoid)210 3462 A
(function)336 3714 A
(call)168 4092 A
2250 V
(06330)210 648 A
1362(jz)S
(over_call_unhold)672 1698 A
2340 V
(06331)210 648 A
(call)168 1362 A
(_unhold)294 1698 A
2370(!)S
(this)168 2454 A
2664(is)S
(rare)168 2790 A
3000(so)S
(overhead)336 3126 A
(acceptable)420 3504 A
2430 V
(06332)210 648 A
(over_call_unhold:)714 1026 A
2520 V
(06333)210 648 A
(mov)126 1362 A
(esp,)168 1698 A
((_proc_ptr))462 1908 A
2706(!)S
(will)168 2790 A
(assume)252 3000 A
(P_STACKBASE)462 3294 A
3798(==)S
3924(0)S
2610 V
(06334)210 648 A
(lldt)168 1362 A
(P_LDT_SEL(esp))588 1698 A
2706(!)S
(enable)252 2790 A
(segment)294 3084 A
(descriptors)462 3420 A
(for)126 3924 A
(task)168 4092 A
2700 V
(06335)210 648 A
(lea)126 1362 A
(eax,)168 1698 A
(P_STACKTOP(esp))630 1908 A
2706(!)S
(arrange)294 2790 A
(for)126 3126 A
(next)168 3294 A
(interrupt)378 3504 A
2790 V
(06336)210 648 A
(mov)126 1362 A
((_tss+TSS3_S_SP0),)756 1698 A
(eax)126 2496 A
2706(!)S
2790(to)S
(save)168 2916 A
(state)210 3126 A
3378(in)S
(process)294 3504 A
(table)210 3840 A
2880 V
(06337)210 648 A
(restart1:)378 1026 A
2970 V
(06338)210 648 A
(decb)168 1362 A
((_k_reenter))504 1698 A
3060 V
(06339)210 648 A
(o16)126 1194 A
(pop)126 1362 A
1698(gs)S
3150 V
(06340)210 648 A
(o16)126 1194 A
(pop)126 1362 A
1698(fs)S
3240 V
(06341)210 648 A
(o16)126 1194 A
(pop)126 1362 A
1698(es)S
3330 V
(06342)210 648 A
(o16)126 1194 A
(pop)126 1362 A
1698(ds)S
3420 V
(06343)210 648 A
(popad)210 1362 A
3510 V
(06344)210 648 A
(add)126 1362 A
(esp,)168 1698 A
1908(4)S
2370(!)S
(skip)168 2454 A
(return)252 2664 A
(adr)126 2958 A
3600 V
(06345)210 648 A
(iretd)210 1362 A
2370(!)S
(continue)336 2454 A
(process)294 2832 A
3690 V
(06346)210 648 A
3780 V
(06347)210 648 A
(!*===========================================================================*)3276 1026 A
3870 V
(06348)210 648 A
1026(!*)S
(exception)378 2370 A
(handlers)336 2790 A
4260(*)S
3960 V
(06349)210 648 A
(!*===========================================================================*)3276 1026 A
4050 V
(06350)210 648 A
(_divide_error:)588 1026 A
4140 V
(06351)210 648 A
(push)168 1362 A
(DIVIDE_VECTOR)546 1698 A
4230 V
(06352)210 648 A
(jmp)126 1362 A
(exception)378 1698 A
4320 V
(06353)210 648 A
4410 V
(06354)210 648 A
(_single_step_exception:)966 1026 A
4500 V
(06355)210 648 A
(push)168 1362 A
(DEBUG_VECTOR)504 1698 A
4590 V
(06356)210 648 A
(jmp)126 1362 A
(exception)378 1698 A
4680 V
(06357)210 648 A
4770 V
(06358)210 648 A
(_nmi:)210 1026 A
4860 V
(06359)210 648 A
(push)168 1362 A
(NMI_VECTOR)420 1698 A
4950 V
(06360)210 648 A
(jmp)126 1362 A
(exception)378 1698 A
5040 V
(06361)210 648 A
5130 V
(06362)210 648 A
(_breakpoint_exception:)924 1026 A
5220 V
(06363)210 648 A
(push)168 1362 A
(BREAKPOINT_VECTOR)714 1698 A
5310 V
(06364)210 648 A
(jmp)126 1362 A
(exception)378 1698 A
5400 V
(06365)210 648 A
5490 V
(06366)210 648 A
(_overflow:)420 1026 A
5580 V
(06367)210 648 A
(push)168 1362 A
(OVERFLOW_VECTOR)630 1698 A
5670 V
(06368)210 648 A
(jmp)126 1362 A
(exception)378 1698 A
5760 V
(06369)210 648 A
5850 V
(06370)210 648 A
(_bounds_check:)588 1026 A
5940 V
(06371)210 648 A
(push)168 1362 A
(BOUNDS_VECTOR)546 1698 A
6030 V
(06372)210 648 A
(jmp)126 1362 A
(exception)378 1698 A
6120 V
(06373)210 648 A
6210 V
(06374)210 648 A
(_inval_opcode:)588 1026 A
8418 V
EP
%%Page: 75 75
BP
/slant 0 def
/height 0 def
630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
1970(File:)S
(src/kernel/mpx386.s)902 2203 A
12 B
4308(75)S
900 V
7 LST
(06375)210 648 A
(push)168 1362 A
(INVAL_OP_VECTOR)630 1698 A
990 V
(06376)210 648 A
(jmp)126 1362 A
(exception)378 1698 A
1080 V
(06377)210 648 A
1170 V
(06378)210 648 A
(_copr_not_available:)840 1026 A
1260 V
(06379)210 648 A
(push)168 1362 A
(COPROC_NOT_VECTOR)714 1698 A
1350 V
(06380)210 648 A
(jmp)126 1362 A
(exception)378 1698 A
1440 V
(06381)210 648 A
1530 V
(06382)210 648 A
(_double_fault:)588 1026 A
1620 V
(06383)210 648 A
(push)168 1362 A
(DOUBLE_FAULT_VECTOR)798 1698 A
1710 V
(06384)210 648 A
(jmp)126 1362 A
(errexception)504 1698 A
1800 V
(06385)210 648 A
1890 V
(06386)210 648 A
(_copr_seg_overrun:)756 1026 A
1980 V
(06387)210 648 A
(push)168 1362 A
(COPROC_SEG_VECTOR)714 1698 A
2070 V
(06388)210 648 A
(jmp)126 1362 A
(exception)378 1698 A
2160 V
(06389)210 648 A
2250 V
(06390)210 648 A
(_inval_tss:)462 1026 A
2340 V
(06391)210 648 A
(push)168 1362 A
(INVAL_TSS_VECTOR)672 1698 A
2430 V
(06392)210 648 A
(jmp)126 1362 A
(errexception)504 1698 A
2520 V
(06393)210 648 A
2610 V
(06394)210 648 A
(_segment_not_present:)882 1026 A
2700 V
(06395)210 648 A
(push)168 1362 A
(SEG_NOT_VECTOR)588 1698 A
2790 V
(06396)210 648 A
(jmp)126 1362 A
(errexception)504 1698 A
2880 V
(06397)210 648 A
2970 V
(06398)210 648 A
(_stack_exception:)714 1026 A
3060 V
(06399)210 648 A
(push)168 1362 A
(STACK_FAULT_VECTOR)756 1698 A
3150 V
(06400)210 648 A
(jmp)126 1362 A
(errexception)504 1698 A
3240 V
(06401)210 648 A
3330 V
(06402)210 648 A
(_general_protection:)840 1026 A
3420 V
(06403)210 648 A
(push)168 1362 A
(PROTECTION_VECTOR)714 1698 A
3510 V
(06404)210 648 A
(jmp)126 1362 A
(errexception)504 1698 A
3600 V
(06405)210 648 A
3690 V
(06406)210 648 A
(_page_fault:)504 1026 A
3780 V
(06407)210 648 A
(push)168 1362 A
(PAGE_FAULT_VECTOR)714 1698 A
3870 V
(06408)210 648 A
(jmp)126 1362 A
(errexception)504 1698 A
3960 V
(06409)210 648 A
4050 V
(06410)210 648 A
(_copr_error:)504 1026 A
4140 V
(06411)210 648 A
(push)168 1362 A
(COPROC_ERR_VECTOR)714 1698 A
4230 V
(06412)210 648 A
(jmp)126 1362 A
(exception)378 1698 A
4320 V
(06413)210 648 A
4410 V
(06414)210 648 A
(!*===========================================================================*)3276 1026 A
4500 V
(06415)210 648 A
1026(!*)S
(exception)378 2370 A
4260(*)S
4590 V
(06416)210 648 A
(!*===========================================================================*)3276 1026 A
4680 V
(06417)210 648 A
1026(!)S
(This)168 1110 A
1320(is)S
(called)252 1446 A
(for)126 1740 A
(all)126 1908 A
(exceptions)420 2076 A
(which)210 2538 A
2790(do)S
(not)126 2916 A
(push)168 3084 A
3294(an)S
(error)210 3420 A
(code.)210 3672 A
4770 V
(06418)210 648 A
4860 V
(06419)210 648 A
(.align)252 1362 A
1698(16)S
4950 V
(06420)210 648 A
(exception:)420 1026 A
5040 V
(06421)210 648 A
(sseg)168 1068 A
(mov)126 1362 A
((trap_errno),)546 1698 A
2286(0)S
2706(!)S
(clear)210 2790 A
(trap_errno)420 3042 A
5130 V
(06422)210 648 A
(sseg)168 1068 A
(pop)126 1362 A
((ex_number))462 1698 A
5220 V
(06423)210 648 A
(jmp)126 1362 A
(exception1)420 1698 A
5310 V
(06424)210 648 A
5400 V
(06425)210 648 A
(!*===========================================================================*)3276 1026 A
5490 V
(06426)210 648 A
1026(!*)S
(errexception)504 2370 A
4260(*)S
5580 V
(06427)210 648 A
(!*===========================================================================*)3276 1026 A
5670 V
(06428)210 648 A
1026(!)S
(This)168 1110 A
1320(is)S
(called)252 1446 A
(for)126 1740 A
(all)126 1908 A
(exceptions)420 2076 A
(which)210 2538 A
(push)168 2790 A
3000(an)S
(error)210 3126 A
(code.)210 3378 A
5760 V
(06429)210 648 A
5850 V
(06430)210 648 A
(.align)252 1362 A
1698(16)S
5940 V
(06431)210 648 A
(errexception:)546 1026 A
6030 V
(06432)210 648 A
(sseg)168 1068 A
(pop)126 1362 A
((ex_number))462 1698 A
6120 V
(06433)210 648 A
(sseg)168 1068 A
(pop)126 1362 A
((trap_errno))504 1698 A
6210 V
(06434)210 648 A
(exception1:)462 1026 A
2706(!)S
(Common)252 2790 A
(for)126 3084 A
(all)126 3252 A
(exceptions.)462 3420 A
8418 V
EP
%%Page: 76 76
BP
/slant 0 def
/height 0 def
630 V
12 B
648(76)S
11 R
1970(File:)S
(src/kernel/mpx386.s)902 2203 A
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
900 V
7 LST
(06435)210 648 A
(push)168 1362 A
(eax)126 1698 A
2706(!)S
(eax)126 2790 A
2958(is)S
(scratch)294 3084 A
(register)336 3420 A
990 V
(06436)210 648 A
(mov)126 1362 A
(eax,)168 1698 A
(0+4(esp))336 1908 A
2706(!)S
(old)126 2790 A
(eip)126 2958 A
1080 V
(06437)210 648 A
(sseg)168 1068 A
(mov)126 1362 A
((old_eip),)420 1698 A
(eax)126 2160 A
1170 V
(06438)210 648 A
(movzx)210 1362 A
(eax,)168 1698 A
(4+4(esp))336 1908 A
2706(!)S
(old)126 2790 A
2958(cs)S
1260 V
(06439)210 648 A
(sseg)168 1068 A
(mov)126 1362 A
((old_cs),)378 1698 A
(eax)126 2118 A
1350 V
(06440)210 648 A
(mov)126 1362 A
(eax,)168 1698 A
(8+4(esp))336 1908 A
2706(!)S
(old)126 2790 A
(eflags)252 2958 A
1440 V
(06441)210 648 A
(sseg)168 1068 A
(mov)126 1362 A
((old_eflags),)546 1698 A
(eax)126 2286 A
1530 V
(06442)210 648 A
(pop)126 1362 A
(eax)126 1698 A
1620 V
(06443)210 648 A
(call)168 1362 A
(save)168 1698 A
1710 V
(06444)210 648 A
(push)168 1362 A
((old_eflags))504 1698 A
1800 V
(06445)210 648 A
(push)168 1362 A
((old_cs))336 1698 A
1890 V
(06446)210 648 A
(push)168 1362 A
((old_eip))378 1698 A
1980 V
(06447)210 648 A
(push)168 1362 A
((trap_errno))504 1698 A
2070 V
(06448)210 648 A
(push)168 1362 A
((ex_number))462 1698 A
2160 V
(06449)210 648 A
(call)168 1362 A
(_exception)420 1698 A
2706(!)S
((ex_number,)462 2790 A
(trap_errno,)462 3294 A
(old_eip,)336 3798 A
2250 V
(06450)210 648 A
2706(!)S
(old_cs,)294 3042 A
(old_eflags))462 3378 A
2340 V
(06451)210 648 A
(add)126 1362 A
(esp,)168 1698 A
(5*4)126 1908 A
2430 V
(06452)210 648 A
(cli)126 1362 A
2520 V
(06453)210 648 A
(ret)126 1362 A
2610 V
(06454)210 648 A
2700 V
(06455)210 648 A
(!*===========================================================================*)3276 1026 A
2790 V
(06456)210 648 A
1026(!*)S
(level0_call)462 2370 A
4260(*)S
2880 V
(06457)210 648 A
(!*===========================================================================*)3276 1026 A
2970 V
(06458)210 648 A
(_level0_call:)546 1026 A
3060 V
(06459)210 648 A
(call)168 1362 A
(save)168 1698 A
3150 V
(06460)210 648 A
(jmp)126 1362 A
((_level0_func))588 1698 A
3240 V
(06461)210 648 A
3330 V
(06462)210 648 A
(!*===========================================================================*)3276 1026 A
3420 V
(06463)210 648 A
1026(!*)S
(idle_task)378 2370 A
4260(*)S
3510 V
(06464)210 648 A
(!*===========================================================================*)3276 1026 A
3600 V
(06465)210 648 A
(_idle_task:)462 1026 A
2370(!)S
(executed)336 2454 A
(when)168 2832 A
(there)210 3042 A
3294(is)S
3420(no)S
(work)168 3546 A
3690 V
(06466)210 648 A
(jmp)126 1362 A
(_idle_task)420 1698 A
2370(!)S
2454(a)S
("hlt")210 2538 A
(before)252 2790 A
(this)168 3084 A
(fails)210 3294 A
3546(in)S
(protected)378 3672 A
(mode)168 4092 A
3780 V
(06467)210 648 A
3870 V
(06468)210 648 A
(!*===========================================================================*)3276 1026 A
3960 V
(06469)210 648 A
1026(!*)S
(data)168 2370 A
4260(*)S
4050 V
(06470)210 648 A
(!*===========================================================================*)3276 1026 A
4140 V
(06471)210 648 A
1026(!)S
(These)210 1110 A
(declarations)504 1362 A
(assure)252 1908 A
(that)168 2202 A
(storage)294 2412 A
(will)168 2748 A
2958(be)S
(allocated)378 3084 A
3504(at)S
(the)126 3630 A
(very)168 3798 A
4230 V
(06472)210 648 A
1026(!)S
(beginning)378 1110 A
1530(of)S
(the)126 1656 A
(kernel)252 1824 A
(data)168 2118 A
(section,)336 2328 A
2706(so)S
(the)126 2832 A
(boot)168 3000 A
(monitor)294 3210 A
(can)126 3546 A
3714(be)S
(easily)252 3840 A
4320 V
(06473)210 648 A
1026(!)S
(told)168 1110 A
(how)126 1320 A
1488(to)S
(patch)210 1614 A
(these)210 1866 A
(locations.)420 2118 A
(Note)168 2580 A
(that)168 2790 A
(the)126 3000 A
(magic)210 3168 A
(number)252 3420 A
3714(is)S
(put)126 3840 A
4410 V
(06474)210 648 A
1026(!)S
(here)168 1110 A
1320(by)S
(the)126 1446 A
(compiler,)378 1614 A
(but)126 2034 A
(will)168 2202 A
2412(be)S
(read)168 2538 A
(by,)126 2748 A
(and)126 2916 A
(then)168 3084 A
(overwritten)462 3294 A
(by,)126 3798 A
4500 V
(06475)210 648 A
1026(!)S
(the)126 1110 A
(boot)168 1278 A
(monitor.)336 1488 A
(When)168 1866 A
(the)126 2076 A
(kernel)252 2244 A
(starts)252 2538 A
(the)126 2832 A
(sizes)210 3000 A
(array)210 3252 A
(will)168 3504 A
3714(be)S
4590 V
(06476)210 648 A
1026(!)S
(found)210 1110 A
(here,)210 1362 A
1614(as)S
1740(if)S
1866(it)S
(had)126 1992 A
(been)168 2160 A
(initialized)462 2370 A
2874(by)S
(the)126 3000 A
(compiler.)378 3168 A
4680 V
(06477)210 648 A
4770 V
(06478)210 648 A
(.sect)210 1026 A
(.rom)168 1278 A
1698(!)S
(Before)252 1782 A
(the)126 2076 A
(string)252 2244 A
(table)210 2538 A
(please)252 2790 A
4860 V
(06479)210 648 A
(_sizes:)294 1026 A
2370(!)S
(sizes)210 2454 A
2706(of)S
(kernel,)294 2832 A
(mm,)126 3168 A
3336(fs)S
(filled)252 3462 A
3756(in)S
3882(by)S
(boot)168 4008 A
4950 V
(06480)210 648 A
(.data2)252 1362 A
(0x526F)252 1698 A
2370(!)S
(this)168 2454 A
(must)168 2664 A
2874(be)S
(the)126 3000 A
(first)210 3168 A
(data)168 3420 A
(entry)210 3630 A
((magic)252 3882 A
4176(#))S
5040 V
(06481)210 648 A
(.space)252 1362 A
(16*2*2-2)336 1698 A
2370(!)S
(monitor)294 2454 A
(uses)168 2790 A
(previous)336 3000 A
(word)168 3378 A
(and)126 3588 A
(this)168 3756 A
(space)210 3966 A
5130 V
(06482)210 648 A
2370(!)S
(extra)210 2454 A
(space)210 2706 A
(allows)252 2958 A
(for)126 3252 A
(additional)420 3420 A
(servers)294 3882 A
5220 V
(06483)210 648 A
(.sect)210 1026 A
(.bss)168 1278 A
5310 V
(06484)210 648 A
(k_stack:)336 1026 A
5400 V
(06485)210 648 A
(.space)252 1362 A
(K_STACK_BYTES)546 1698 A
2370(!)S
(kernel)252 2454 A
(stack)210 2748 A
5490 V
(06486)210 648 A
(k_stktop:)378 1026 A
2370(!)S
(top)126 2454 A
2622(of)S
(kernel)252 2748 A
(stack)210 3042 A
5580 V
(06487)210 648 A
(.comm)210 1362 A
(ex_number,)420 1698 A
2160(4)S
5670 V
(06488)210 648 A
(.comm)210 1362 A
(trap_errno,)462 1698 A
2202(4)S
5760 V
(06489)210 648 A
(.comm)210 1362 A
(old_eip,)336 1698 A
2076(4)S
5850 V
(06490)210 648 A
(.comm)210 1362 A
(old_cs,)294 1698 A
2034(4)S
5940 V
(06491)210 648 A
(.comm)210 1362 A
(old_eflags,)462 1698 A
2202(4)S
8418 V
EP
%%Page: 77 77
BP
/slant 0 def
/height 0 def
630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
2051(File:)S
2284(src/kernel/start.c)S
12 B
4308(77)S
990 V
7 LST
(++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++)3528 648 A
1080 V
(src/kernel/start.c)756 2034 A
1170 V
(++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++)3528 648 A
1350 V
(06500)210 648 A
1026(/*)S
(This)168 1152 A
(file)168 1362 A
(contains)336 1572 A
(the)126 1950 A
2118(C)S
(startup)294 2202 A
(code)168 2538 A
(for)126 2748 A
(Minix)210 2916 A
3168(on)S
(Intel)210 3294 A
(processors.)462 3546 A
1440 V
(06501)210 648 A
1068(*)S
1152(It)S
(cooperates)420 1278 A
(with)168 1740 A
(mpx.s)210 1950 A
2202(to)S
(set)126 2328 A
2496(up)S
2622(a)S
(good)168 2706 A
(environment)462 2916 A
(for)126 3420 A
(main().)294 3588 A
1530 V
(06502)210 648 A
1068(*)S
1620 V
(06503)210 648 A
1068(*)S
(This)168 1152 A
(code)168 1362 A
(runs)168 1572 A
1782(in)S
(real)168 1908 A
(mode)168 2118 A
(for)126 2328 A
2496(a)S
2580(16)S
(bit)126 2706 A
(kernel)252 2874 A
(and)126 3168 A
(may)126 3336 A
(have)168 3504 A
3714(to)S
(switch)252 3840 A
1710 V
(06504)210 648 A
1068(*)S
1152(to)S
(protected)378 1278 A
(mode)168 1698 A
(for)126 1908 A
2076(a)S
(286.)168 2160 A
1800 V
(06505)210 648 A
1068(*)S
1890 V
(06506)210 648 A
1068(*)S
(For)126 1152 A
1320(a)S
1404(32)S
(bit)126 1530 A
(kernel)252 1698 A
(this)168 1992 A
(already)294 2202 A
(runs)168 2538 A
2748(in)S
(protected)378 2874 A
(mode,)210 3294 A
(but)126 3546 A
(the)126 3714 A
(selectors)378 3882 A
1980 V
(06507)210 648 A
1068(*)S
(are)126 1152 A
(still)210 1320 A
(those)210 1572 A
(given)210 1824 A
2076(by)S
(the)126 2202 A
(BIOS)168 2370 A
(with)168 2580 A
(interrupts)420 2790 A
(disabled,)378 3252 A
3672(so)S
(the)126 3798 A
2070 V
(06508)210 648 A
1068(*)S
(descriptors)462 1152 A
(need)168 1656 A
1866(to)S
1992(be)S
(reloaded)336 2118 A
(and)126 2496 A
(interrupt)378 2664 A
(descriptors)462 3084 A
(made.)210 3588 A
2160 V
(06509)210 648 A
1068(*/)S
2250 V
(06510)210 648 A
2340 V
(06511)210 648 A
(#include)336 1026 A
("kernel.h")420 1404 A
2430 V
(06512)210 648 A
(#include)336 1026 A
(<stdlib.h>)420 1404 A
2520 V
(06513)210 648 A
(#include)336 1026 A
(<minix/boot.h>)588 1404 A
2610 V
(06514)210 648 A
(#include)336 1026 A
("protect.h")462 1404 A
2700 V
(06515)210 648 A
2790 V
(06516)210 648 A
(PRIVATE)294 1026 A
(char)168 1362 A
(k_environ[256];)630 1572 A
2370(/*)S
(environment)462 2496 A
(strings)294 3000 A
(passed)252 3336 A
3630(by)S
(loader)252 3756 A
4050(*/)S
2880 V
(06517)210 648 A
2970 V
(06518)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(int)126 1866 A
(k_atoi,)294 2034 A
((char)210 2370 A
(*s))126 2622 A
2790();)S
3060 V
(06519)210 648 A
3150 V
(06520)210 648 A
3240 V
(06521)210 648 A
(/*==========================================================================*)3234 1026 A
3330 V
(06522)210 648 A
1068(*)S
(cstart)252 2370 A
4218(*)S
3420 V
(06523)210 648 A
(*==========================================================================*/)3234 1068 A
3510 V
(06524)210 648 A
(PUBLIC)252 1026 A
(void)168 1320 A
(cstart(cs,)420 1530 A
(ds,)126 1992 A
(mcs,)168 2160 A
(mds,)168 2370 A
(parmoff,)336 2580 A
(parmsize))378 2958 A
3600 V
(06525)210 648 A
(U16_t)210 1026 A
(cs,)126 1278 A
(ds;)126 1446 A
2370(/*)S
(Kernel)252 2496 A
(code)168 2790 A
(and)126 3000 A
(data)168 3168 A
(segment)294 3378 A
3714(*/)S
3690 V
(06526)210 648 A
(U16_t)210 1026 A
(mcs,)168 1278 A
(mds;)168 1488 A
2370(/*)S
(Monitor)294 2496 A
(code)168 2832 A
(and)126 3042 A
(data)168 3210 A
(segment)294 3420 A
3756(*/)S
3780 V
(06527)210 648 A
(U16_t)210 1026 A
(parmoff,)336 1278 A
(parmsize;)378 1656 A
2370(/*)S
(boot)168 2496 A
(parameters)420 2706 A
(offset)252 3168 A
(and)126 3462 A
(length)252 3630 A
3924(*/)S
3870 V
(06528)210 648 A
1026({)S
3960 V
(06529)210 648 A
1026(/*)S
(Perform)294 1152 A
(system)252 1488 A
(initializations)630 1782 A
(prior)210 2454 A
2706(to)S
(calling)294 2832 A
(main().)294 3168 A
3504(*/)S
4050 V
(06530)210 648 A
4140 V
(06531)210 648 A
(register)336 1110 A
(char)168 1488 A
(*envp;)252 1698 A
4230 V
(06532)210 648 A
(phys_bytes)420 1110 A
(mcode_base,)462 1572 A
(mdata_base;)462 2076 A
4320 V
(06533)210 648 A
(unsigned)336 1110 A
(mon_start;)420 1488 A
4410 V
(06534)210 648 A
4500 V
(06535)210 648 A
1110(/*)S
(Record)252 1236 A
(where)210 1530 A
(the)126 1782 A
(kernel)252 1950 A
(and)126 2244 A
(the)126 2412 A
(monitor)294 2580 A
(are.)168 2916 A
3126(*/)S
4590 V
(06536)210 648 A
(code_base)378 1110 A
1530(=)S
(seg2phys(cs);)546 1614 A
4680 V
(06537)210 648 A
(data_base)378 1110 A
1530(=)S
(seg2phys(ds);)546 1614 A
4770 V
(06538)210 648 A
(mcode_base)420 1110 A
1572(=)S
(seg2phys(mcs);)588 1656 A
4860 V
(06539)210 648 A
(mdata_base)420 1110 A
1572(=)S
(seg2phys(mds);)588 1656 A
4950 V
(06540)210 648 A
5040 V
(06541)210 648 A
1110(/*)S
(Initialize)420 1236 A
(protected)378 1698 A
(mode)168 2118 A
(descriptors.)504 2328 A
2874(*/)S
5130 V
(06542)210 648 A
(prot_init();)504 1110 A
5220 V
(06543)210 648 A
5310 V
(06544)210 648 A
1110(/*)S
(Copy)168 1236 A
(the)126 1446 A
(boot)168 1614 A
(parameters)420 1824 A
2286(to)S
(kernel)252 2412 A
(memory.)294 2706 A
3042(*/)S
5400 V
(06545)210 648 A
1110(if)S
((parmsize)378 1236 A
1656(>)S
(sizeof)252 1740 A
(k_environ)378 2034 A
2454(-)S
2538(2))S
(parmsize)336 2664 A
3042(=)S
(sizeof)252 3126 A
(k_environ)378 3420 A
3840(-)S
3924(2;)S
5490 V
(06546)210 648 A
(phys_copy(mdata_base)840 1110 A
1992(+)S
(parmoff,)336 2076 A
(vir2phys(k_environ),)840 2454 A
((phys_bytes))504 3336 A
(parmsize);)420 3882 A
5580 V
(06547)210 648 A
5670 V
(06548)210 648 A
1110(/*)S
(Convert)294 1236 A
(important)378 1572 A
(boot)168 1992 A
(environment)462 2202 A
(variables.)420 2706 A
3168(*/)S
5760 V
(06549)210 648 A
(boot_parameters.bp_rootdev)1092 1110 A
2244(=)S
(k_atoi(k_getenv("rootdev"));)1176 2328 A
5850 V
(06550)210 648 A
(boot_parameters.bp_ramimagedev)1260 1110 A
2412(=)S
(k_atoi(k_getenv("ramimagedev"));)1344 2496 A
5940 V
(06551)210 648 A
(boot_parameters.bp_ramsize)1092 1110 A
2244(=)S
(k_atoi(k_getenv("ramsize"));)1176 2328 A
6030 V
(06552)210 648 A
(boot_parameters.bp_processor)1176 1110 A
2328(=)S
(k_atoi(k_getenv("processor"));)1260 2412 A
6120 V
(06553)210 648 A
6210 V
(06554)210 648 A
1110(/*)S
(Type)168 1236 A
1446(of)S
(VDU:)168 1572 A
1782(*/)S
8418 V
EP
%%Page: 78 78
BP
/slant 0 def
/height 0 def
630 V
12 B
648(78)S
11 R
2051(File:)S
2284(src/kernel/start.c)S
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
900 V
7 LST
(06555)210 648 A
(envp)168 1110 A
1320(=)S
(k_getenv("video");)756 1404 A
990 V
(06556)210 648 A
1110(if)S
((strcmp(envp,)546 1236 A
("ega"))252 1824 A
2118(==)S
2244(0))S
(ega)126 2370 A
2538(=)S
(TRUE;)210 2622 A
1080 V
(06557)210 648 A
1110(if)S
((strcmp(envp,)546 1236 A
("vga"))252 1824 A
2118(==)S
2244(0))S
(vga)126 2370 A
2538(=)S
(ega)126 2622 A
2790(=)S
(TRUE;)210 2874 A
1170 V
(06558)210 648 A
1260 V
(06559)210 648 A
1110(/*)S
(Memory)252 1236 A
(sizes:)252 1530 A
1824(*/)S
1350 V
(06560)210 648 A
(low_memsize)462 1110 A
1614(=)S
(k_atoi(k_getenv("memsize"));)1176 1698 A
1440 V
(06561)210 648 A
(ext_memsize)462 1110 A
1614(=)S
(k_atoi(k_getenv("emssize"));)1176 1698 A
1530 V
(06562)210 648 A
1620 V
(06563)210 648 A
1110(/*)S
(Processor?)420 1236 A
1698(*/)S
1710 V
(06564)210 648 A
(processor)378 1110 A
1530(=)S
(boot_parameters.bp_processor;)1218 1614 A
3042(/*)S
(86,)126 3168 A
(186,)168 3336 A
(286,)168 3546 A
(386,)168 3756 A
(...)126 3966 A
4134(*/)S
1800 V
(06565)210 648 A
1890 V
(06566)210 648 A
1110(/*)S
(XT,)126 1236 A
1404(AT)S
1530(or)S
(MCA)126 1656 A
(bus?)168 1824 A
2034(*/)S
1980 V
(06567)210 648 A
(envp)168 1110 A
1320(=)S
(k_getenv("bus");)672 1404 A
2070 V
(06568)210 648 A
1110(if)S
((envp)210 1236 A
1488(==)S
(NIL_PTR)294 1614 A
1950(||)S
(strcmp(envp,)504 2076 A
("at"))210 2622 A
2874(==)S
3000(0))S
3126({)S
2160 V
(06569)210 648 A
(pc_at)210 1362 A
1614(=)S
(TRUE;)210 1698 A
2250 V
(06570)210 648 A
1110(})S
(else)168 1194 A
2340 V
(06571)210 648 A
1110(if)S
((strcmp(envp,)546 1236 A
("mca"))252 1824 A
2118(==)S
2244(0))S
2370({)S
2430 V
(06572)210 648 A
(pc_at)210 1362 A
1614(=)S
(ps_mca)252 1698 A
1992(=)S
(TRUE;)210 2076 A
2520 V
(06573)210 648 A
1110(})S
2610 V
(06574)210 648 A
2700 V
(06575)210 648 A
1110(/*)S
(Decide)252 1236 A
1530(if)S
(mode)168 1656 A
1866(is)S
(protected.)420 1992 A
2454(*/)S
2790 V
(06576)210 648 A
(#if)126 1026 A
(_WORD_SIZE)420 1194 A
1656(==)S
1782(2)S
2880 V
(06577)210 648 A
(protected_mode)588 1110 A
1740(=)S
(processor)378 1824 A
2244(>=)S
(286;)168 2370 A
2970 V
(06578)210 648 A
(#endif)252 1026 A
3060 V
(06579)210 648 A
3150 V
(06580)210 648 A
1110(/*)S
1236(Is)S
(there)210 1362 A
1614(a)S
(monitor)294 1698 A
2034(to)S
(return)252 2160 A
(to?)126 2454 A
2664(If)S
2790(so)S
(then)168 2916 A
(keep)168 3126 A
3336(it)S
(safe.)210 3462 A
3714(*/)S
3240 V
(06581)210 648 A
1110(if)S
((!protected_mode))714 1236 A
(mon_return)420 1992 A
2454(=)S
2538(0;)S
3330 V
(06582)210 648 A
(mon_start)378 1110 A
1530(=)S
(mcode_base)420 1614 A
2076(/)S
(1024;)210 2160 A
3420 V
(06583)210 648 A
1110(if)S
((mon_return)462 1236 A
1740(&&)S
(low_memsize)462 1866 A
2370(>)S
(mon_start))420 2454 A
(low_memsize)462 2916 A
3420(=)S
(mon_start;)420 3504 A
3510 V
(06584)210 648 A
3600 V
(06585)210 648 A
1110(/*)S
(Return)252 1236 A
1530(to)S
(assembler)378 1656 A
(code)168 2076 A
2286(to)S
(switch)252 2412 A
2706(to)S
(protected)378 2832 A
(mode)168 3252 A
((if)126 3462 A
(286),)210 3630 A
(reload)252 3882 A
3690 V
(06586)210 648 A
1152(*)S
(selectors)378 1236 A
(and)126 1656 A
(call)168 1824 A
(main().)294 2034 A
3780 V
(06587)210 648 A
1152(*/)S
3870 V
(06588)210 648 A
1026(})S
4140 V
(06591)210 648 A
(/*==========================================================================*)3234 1026 A
4230 V
(06592)210 648 A
1068(*)S
(k_atoi)252 2370 A
4218(*)S
4320 V
(06593)210 648 A
(*==========================================================================*/)3234 1068 A
4410 V
(06594)210 648 A
(PRIVATE)294 1026 A
(int)126 1362 A
(k_atoi(s))378 1530 A
4500 V
(06595)210 648 A
(register)336 1026 A
(char)168 1404 A
(*s;)126 1614 A
4590 V
(06596)210 648 A
1026({)S
4680 V
(06597)210 648 A
1026(/*)S
(Convert)294 1152 A
(string)252 1488 A
1782(to)S
(integer.)336 1908 A
2286(*/)S
4770 V
(06598)210 648 A
4860 V
(06599)210 648 A
(return)252 1110 A
(strtol(s,)378 1404 A
((char)210 1824 A
(**))126 2076 A
(NULL,)210 2244 A
(10);)168 2496 A
4950 V
(06600)210 648 A
1026(})S
5220 V
(06603)210 648 A
(/*==========================================================================*)3234 1026 A
5310 V
(06604)210 648 A
1068(*)S
(k_getenv)336 2370 A
4218(*)S
5400 V
(06605)210 648 A
(*==========================================================================*/)3234 1068 A
5490 V
(06606)210 648 A
(PUBLIC)252 1026 A
(char)168 1320 A
(*k_getenv(name))630 1530 A
5580 V
(06607)210 648 A
(char)168 1026 A
(*name;)252 1236 A
5670 V
(06608)210 648 A
1026({)S
5760 V
(06609)210 648 A
1026(/*)S
(Get)126 1152 A
(environment)462 1320 A
(value)210 1824 A
2076(-)S
(kernel)252 2160 A
(version)294 2454 A
2790(of)S
(getenv)252 2916 A
3210(to)S
(avoid)210 3336 A
(setting)294 3588 A
3924(up)S
(the)126 4050 A
5850 V
(06610)210 648 A
1068(*)S
(usual)210 1152 A
(environment)462 1404 A
(array.)252 1908 A
5940 V
(06611)210 648 A
1068(*/)S
6030 V
(06612)210 648 A
6120 V
(06613)210 648 A
(register)336 1110 A
(char)168 1488 A
(*namep;)294 1698 A
6210 V
(06614)210 648 A
(register)336 1110 A
(char)168 1488 A
(*envp;)252 1698 A
8418 V
EP
%%Page: 79 79
BP
/slant 0 def
/height 0 def
630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
2051(File:)S
2284(src/kernel/start.c)S
12 B
4308(79)S
900 V
7 LST
(06615)210 648 A
990 V
(06616)210 648 A
(for)126 1110 A
((envp)210 1278 A
1530(=)S
(k_environ;)420 1614 A
(*envp)210 2076 A
2328(!=)S
(0;))126 2454 A
2622({)S
1080 V
(06617)210 648 A
(for)126 1362 A
((namep)252 1530 A
1824(=)S
(name;)210 1908 A
(*namep)252 2160 A
2454(!=)S
2580(0)S
2664(&&)S
(*namep)252 2790 A
3084(==)S
(*envp;)252 3210 A
(namep++,)336 3504 A
(envp++))294 3882 A
1170 V
(06618)210 648 A
1698(;)S
1260 V
(06619)210 648 A
1362(if)S
((*namep)294 1488 A
1824(==)S
('\0')168 1950 A
2160(&&)S
(*envp)210 2286 A
2538(==)S
('='))168 2664 A
(return(envp)462 2874 A
3378(+)S
(1);)126 3462 A
1350 V
(06620)210 648 A
(while)210 1362 A
((*envp++)336 1614 A
1992(!=)S
2118(0))S
1440 V
(06621)210 648 A
1698(;)S
1530 V
(06622)210 648 A
1110(})S
1620 V
(06623)210 648 A
(return(NIL_PTR);)672 1110 A
1710 V
(06624)210 648 A
1026(})S
2340 V
(++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++)3528 648 A
2430 V
(src/kernel/main.c)714 2034 A
2520 V
(++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++)3528 648 A
2700 V
(06700)210 648 A
1026(/*)S
(This)168 1152 A
(file)168 1362 A
(contains)336 1572 A
(the)126 1950 A
(main)168 2118 A
(program)294 2328 A
2664(of)S
(MINIX.)252 2790 A
(The)126 3126 A
(routine)294 3294 A
(main())252 3630 A
2790 V
(06701)210 648 A
1068(*)S
(initializes)462 1152 A
(the)126 1656 A
(system)252 1824 A
(and)126 2118 A
(starts)252 2286 A
(the)126 2580 A
(ball)168 2748 A
(rolling)294 2958 A
3294(by)S
(setting)294 3420 A
3756(up)S
(the)126 3882 A
(proc)168 4050 A
2880 V
(06702)210 648 A
1068(*)S
(table,)252 1152 A
(interrupt)378 1446 A
(vectors,)336 1866 A
(and)126 2244 A
(scheduling)420 2412 A
(each)168 2874 A
(task)168 3084 A
3294(to)S
(run)126 3420 A
3588(to)S
(initialize)420 3714 A
2970 V
(06703)210 648 A
1068(*)S
(itself.)294 1152 A
3060 V
(06704)210 648 A
1068(*)S
3150 V
(06705)210 648 A
1068(*)S
(The)126 1152 A
(entries)294 1320 A
(into)168 1656 A
(this)168 1866 A
(file)168 2076 A
(are:)168 2286 A
3240 V
(06706)210 648 A
1068(*)S
(main:)210 1236 A
(MINIX)210 2034 A
(main)168 2286 A
(program)294 2496 A
3330 V
(06707)210 648 A
1068(*)S
(panic:)252 1236 A
(abort)210 2034 A
(MINIX)210 2286 A
(due)126 2538 A
2706(to)S
2832(a)S
(fatal)210 2916 A
(error)210 3168 A
3420 V
(06708)210 648 A
1068(*/)S
3510 V
(06709)210 648 A
3600 V
(06710)210 648 A
(#include)336 1026 A
("kernel.h")420 1404 A
3690 V
(06711)210 648 A
(#include)336 1026 A
(<signal.h>)420 1404 A
3780 V
(06712)210 648 A
(#include)336 1026 A
(<unistd.h>)420 1404 A
3870 V
(06713)210 648 A
(#include)336 1026 A
(<minix/callnr.h>)672 1404 A
3960 V
(06714)210 648 A
(#include)336 1026 A
(<minix/com.h>)546 1404 A
4050 V
(06715)210 648 A
(#include)336 1026 A
("proc.h")336 1404 A
4140 V
(06716)210 648 A
4230 V
(06717)210 648 A
4320 V
(06718)210 648 A
(/*===========================================================================*)3276 1026 A
4410 V
(06719)210 648 A
1068(*)S
(main)168 2580 A
4260(*)S
4500 V
(06720)210 648 A
(*===========================================================================*/)3276 1068 A
4590 V
(06721)210 648 A
(PUBLIC)252 1026 A
(void)168 1320 A
(main())252 1530 A
4680 V
(06722)210 648 A
1026({)S
4770 V
(06723)210 648 A
1026(/*)S
(Start)210 1152 A
(the)126 1404 A
(ball)168 1572 A
(rolling.)336 1782 A
2160(*/)S
4860 V
(06724)210 648 A
4950 V
(06725)210 648 A
(register)336 1110 A
(struct)252 1488 A
(proc)168 1782 A
(*rp;)168 1992 A
5040 V
(06726)210 648 A
(register)336 1110 A
(int)126 1488 A
1656(t;)S
5130 V
(06727)210 648 A
(int)126 1110 A
(sizeindex;)420 1278 A
5220 V
(06728)210 648 A
(phys_clicks)462 1110 A
(text_base;)420 1614 A
5310 V
(06729)210 648 A
(vir_clicks)420 1110 A
(text_clicks;)504 1572 A
5400 V
(06730)210 648 A
(vir_clicks)420 1110 A
(data_clicks;)504 1572 A
5490 V
(06731)210 648 A
(phys_bytes)420 1110 A
(phys_b;)294 1572 A
5580 V
(06732)210 648 A
(reg_t)210 1110 A
(ktsb;)210 1362 A
2370(/*)S
(kernel)252 2496 A
(task)168 2790 A
(stack)210 3000 A
(base)168 3252 A
3462(*/)S
5670 V
(06733)210 648 A
(struct)252 1110 A
(memory)252 1404 A
(*memp;)252 1698 A
5760 V
(06734)210 648 A
(struct)252 1110 A
(tasktab)294 1404 A
(*ttp;)210 1740 A
5850 V
(06735)210 648 A
5940 V
(06736)210 648 A
1110(/*)S
(Initialize)420 1236 A
(the)126 1698 A
(interrupt)378 1866 A
(controller.)462 2286 A
2790(*/)S
6030 V
(06737)210 648 A
(intr_init(1);)546 1110 A
6120 V
(06738)210 648 A
6210 V
(06739)210 648 A
1110(/*)S
(Interpret)378 1236 A
(memory)252 1656 A
(sizes.)252 1950 A
2244(*/)S
8418 V
EP
%%Page: 80 80
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/slant 0 def
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630 V
12 B
648(80)S
11 R
2036(File:)S
2269(src/kernel/main.c)S
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
900 V
7 LST
(06740)210 648 A
(mem_init();)462 1110 A
990 V
(06741)210 648 A
1080 V
(06742)210 648 A
1110(/*)S
(Clear)210 1236 A
(the)126 1488 A
(process)294 1656 A
(table.)252 1992 A
1170 V
(06743)210 648 A
1152(*)S
(Set)126 1236 A
1404(up)S
(mappings)336 1530 A
(for)126 1908 A
(proc_addr())462 2076 A
(and)126 2580 A
(proc_number())546 2748 A
(macros.)294 3336 A
1260 V
(06744)210 648 A
1152(*/)S
1350 V
(06745)210 648 A
(for)126 1110 A
((rp)126 1278 A
1446(=)S
(BEG_PROC_ADDR,)588 1530 A
2160(t)S
2244(=)S
(-NR_TASKS;)420 2328 A
2790(rp)S
2916(<)S
(END_PROC_ADDR;)588 3000 A
(++rp,)210 3630 A
(++t))168 3882 A
4092({)S
1440 V
(06746)210 648 A
(rp->p_flags)462 1362 A
1866(=)S
(P_SLOT_FREE;)504 1950 A
1530 V
(06747)210 648 A
(rp->p_nr)336 1362 A
1740(=)S
1824(t;)S
2370(/*)S
(proc)168 2496 A
(number)252 2706 A
(from)168 3000 A
(ptr)126 3210 A
3378(*/)S
1620 V
(06748)210 648 A
((pproc_addr)462 1362 A
1866(+)S
(NR_TASKS)[t])504 1950 A
2496(=)S
(rp;)126 2580 A
3042(/*)S
(proc)168 3168 A
(ptr)126 3378 A
(from)168 3546 A
(number)252 3756 A
4050(*/)S
1710 V
(06749)210 648 A
1110(})S
1800 V
(06750)210 648 A
1890 V
(06751)210 648 A
1110(/*)S
(Set)126 1236 A
1404(up)S
(proc)168 1530 A
(table)210 1740 A
(entries)294 1992 A
(for)126 2328 A
(tasks)210 2496 A
(and)126 2748 A
(servers.)336 2916 A
(The)126 3336 A
(stacks)252 3504 A
3798(of)S
(the)126 3924 A
1980 V
(06752)210 648 A
1152(*)S
(kernel)252 1236 A
(tasks)210 1530 A
(are)126 1782 A
(initialized)462 1950 A
2454(to)S
2580(an)S
(array)210 2706 A
2958(in)S
(data)168 3084 A
(space.)252 3294 A
(The)126 3630 A
(stacks)252 3798 A
2070 V
(06753)210 648 A
1152(*)S
1236(of)S
(the)126 1362 A
(servers)294 1530 A
(have)168 1866 A
(been)168 2076 A
(added)210 2286 A
2538(to)S
(the)126 2664 A
(data)168 2832 A
(segment)294 3042 A
3378(by)S
(the)126 3504 A
(monitor,)336 3672 A
4050(so)S
2160 V
(06754)210 648 A
1152(*)S
(the)126 1236 A
(stack)210 1404 A
(pointer)294 1656 A
1992(is)S
(set)126 2118 A
2286(to)S
(the)126 2412 A
(end)126 2580 A
2748(of)S
(the)126 2874 A
(data)168 3042 A
(segment.)336 3252 A
(All)126 3672 A
(the)126 3840 A
2250 V
(06755)210 648 A
1152(*)S
(processes)378 1236 A
(are)126 1656 A
1824(in)S
(low)126 1950 A
(memory)252 2118 A
2412(on)S
(the)126 2538 A
(8086.)210 2706 A
3000(On)S
(the)126 3126 A
(386)126 3294 A
(only)168 3462 A
(the)126 3672 A
(kernel)252 3840 A
2340 V
(06756)210 648 A
1152(*)S
1236(is)S
1362(in)S
(low)126 1488 A
(memory,)294 1656 A
(the)126 1992 A
(rest)168 2160 A
2370(if)S
(loaded)252 2496 A
2790(in)S
(extended)336 2916 A
(memory.)294 3294 A
2430 V
(06757)210 648 A
1152(*/)S
2520 V
(06758)210 648 A
2610 V
(06759)210 648 A
1110(/*)S
(Task)168 1236 A
(stacks.)294 1446 A
1782(*/)S
2700 V
(06760)210 648 A
(ktsb)168 1110 A
1320(=)S
((reg_t))294 1404 A
(t_stack;)336 1740 A
2790 V
(06761)210 648 A
2880 V
(06762)210 648 A
(for)126 1110 A
1278((t)S
1404(=)S
(-NR_TASKS;)420 1488 A
1950(t)S
2034(<=)S
(LOW_USER;)378 2160 A
(++t))168 2580 A
2790({)S
2970 V
(06763)210 648 A
1362(rp)S
1488(=)S
(proc_addr(t);)546 1572 A
3042(/*)S
(t's)126 3168 A
(process)294 3336 A
(slot)168 3672 A
3882(*/)S
3060 V
(06764)210 648 A
(ttp)126 1362 A
1530(=)S
(&tasktab[t)420 1614 A
2076(+)S
(NR_TASKS];)420 2160 A
3042(/*)S
(t's)126 3168 A
(task)168 3336 A
(attributes)420 3546 A
4008(*/)S
3150 V
(06765)210 648 A
(strcpy(rp->p_name,)756 1362 A
(ttp->name);)462 2160 A
3240 V
(06766)210 648 A
1362(if)S
1488((t)S
1614(<)S
1698(0))S
1824({)S
3330 V
(06767)210 648 A
1698(if)S
((ttp->stksize)546 1824 A
2412(>)S
2496(0))S
2622({)S
3420 V
(06768)210 648 A
(rp->p_stguard)546 2034 A
2622(=)S
((reg_t)252 2706 A
3000(*))S
(ktsb;)210 3126 A
3510 V
(06769)210 648 A
(*rp->p_stguard)588 2034 A
2664(=)S
(STACK_GUARD;)504 2748 A
3600 V
(06770)210 648 A
1698(})S
3690 V
(06771)210 648 A
(ktsb)168 1698 A
1908(+=)S
(ttp->stksize;)546 2034 A
3780 V
(06772)210 648 A
(rp->p_reg.sp)504 1698 A
2244(=)S
(ktsb;)210 2328 A
3870 V
(06773)210 648 A
(text_base)378 1698 A
2118(=)S
(code_base)378 2202 A
2622(>>)S
(CLICK_SHIFT;)504 2748 A
3960 V
(06774)210 648 A
2706(/*)S
(tasks)210 2832 A
(are)126 3084 A
(all)126 3252 A
3420(in)S
(the)126 3546 A
(kernel)252 3714 A
4008(*/)S
4050 V
(06775)210 648 A
(sizeindex)378 1698 A
2118(=)S
2202(0;)S
2706(/*)S
(and)126 2832 A
(use)126 3000 A
(the)126 3168 A
(full)168 3336 A
(kernel)252 3546 A
(sizes)210 3840 A
4092(*/)S
4140 V
(06776)210 648 A
(memp)168 1698 A
1908(=)S
(&mem[0];)336 1992 A
2706(/*)S
(remove)252 2832 A
(from)168 3126 A
(this)168 3336 A
(memory)252 3546 A
(chunk)210 3840 A
4092(*/)S
4230 V
(06777)210 648 A
1362(})S
(else)168 1446 A
1656({)S
4320 V
(06778)210 648 A
(sizeindex)378 1698 A
2118(=)S
2202(2)S
2286(*)S
2370(t)S
2454(+)S
2538(2;)S
2706(/*)S
(MM,)126 2832 A
(FS,)126 3000 A
(INIT)168 3168 A
(have)168 3378 A
(their)210 3588 A
(own)126 3840 A
(sizes)210 4008 A
4260(*/)S
4410 V
(06779)210 648 A
1362(})S
4500 V
(06780)210 648 A
(rp->p_reg.pc)504 1362 A
1908(=)S
((reg_t))294 1992 A
(ttp->initial_pc;)672 2328 A
4590 V
(06781)210 648 A
(rp->p_reg.psw)546 1362 A
1950(=)S
(istaskp(rp))462 2034 A
2538(?)S
(INIT_TASK_PSW)546 2622 A
3210(:)S
(INIT_PSW;)378 3294 A
4680 V
(06782)210 648 A
4770 V
(06783)210 648 A
(text_clicks)462 1362 A
1866(=)S
(sizes[sizeindex];)714 1950 A
4860 V
(06784)210 648 A
(data_clicks)462 1362 A
1866(=)S
(sizes[sizeindex)630 1950 A
2622(+)S
(1];)126 2706 A
4950 V
(06785)210 648 A
(rp->p_map[T].mem_phys)882 1362 A
2286(=)S
(text_base;)420 2370 A
5040 V
(06786)210 648 A
(rp->p_map[T].mem_len)840 1362 A
2286(=)S
(text_clicks;)504 2370 A
5130 V
(06787)210 648 A
(rp->p_map[D].mem_phys)882 1362 A
2286(=)S
(text_base)378 2370 A
2790(+)S
(text_clicks;)504 2874 A
5220 V
(06788)210 648 A
(rp->p_map[D].mem_len)840 1362 A
2286(=)S
(data_clicks;)504 2370 A
5310 V
(06789)210 648 A
(rp->p_map[S].mem_phys)882 1362 A
2286(=)S
(text_base)378 2370 A
2790(+)S
(text_clicks)462 2874 A
3378(+)S
(data_clicks;)504 3462 A
5400 V
(06790)210 648 A
(rp->p_map[S].mem_vir)840 1362 A
2286(=)S
(data_clicks;)504 2370 A
3042(/*)S
(empty)210 3168 A
3420(-)S
(stack)210 3504 A
3756(is)S
3882(in)S
(data)168 4008 A
4218(*/)S
5490 V
(06791)210 648 A
(text_base)378 1362 A
1782(+=)S
(text_clicks)462 1908 A
2412(+)S
(data_clicks;)504 2496 A
3042(/*)S
(ready)210 3168 A
(for)126 3420 A
(next,)210 3588 A
3840(if)S
(server)252 3966 A
4260(*/)S
5580 V
(06792)210 648 A
(memp->size)420 1362 A
1824(-=)S
((text_base)420 1950 A
2412(-)S
(memp->base);)504 2496 A
5670 V
(06793)210 648 A
(memp->base)420 1362 A
1824(=)S
(text_base;)420 1908 A
3042(/*)S
(memory)252 3168 A
3462(no)S
(longer)252 3588 A
(free)168 3882 A
4092(*/)S
5760 V
(06794)210 648 A
5850 V
(06795)210 648 A
1362(if)S
1488((t)S
1614(>=)S
1740(0))S
1866({)S
5940 V
(06796)210 648 A
1698(/*)S
(Initialize)420 1824 A
(the)126 2286 A
(server)252 2454 A
(stack)210 2748 A
(pointer.)336 3000 A
(Take)168 3420 A
3630(it)S
(down)168 3756 A
(one)126 3966 A
(word)168 4134 A
6030 V
(06797)210 648 A
1740(*)S
1824(to)S
(give)168 1950 A
(crtso.s)294 2160 A
(something)378 2496 A
2916(to)S
(use)126 3042 A
3210(as)S
("argc".)294 3336 A
6120 V
(06798)210 648 A
1740(*/)S
6210 V
(06799)210 648 A
(rp->p_reg.sp)504 1698 A
2244(=)S
((rp->p_map[S].mem_vir)882 2328 A
3252(+)S
8418 V
EP
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BP
/slant 0 def
/height 0 def
630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
2036(File:)S
2269(src/kernel/main.c)S
12 B
4308(81)S
900 V
7 LST
(06800)210 648 A
(rp->p_map[S].mem_len))882 2370 A
3294(<<)S
(CLICK_SHIFT;)504 3420 A
990 V
(06801)210 648 A
(rp->p_reg.sp)504 1698 A
2244(-=)S
(sizeof(reg_t);)588 2370 A
1080 V
(06802)210 648 A
1362(})S
1170 V
(06803)210 648 A
1260 V
(06804)210 648 A
(#if)126 1026 A
(_WORD_SIZE)420 1194 A
1656(==)S
1782(4)S
1350 V
(06805)210 648 A
1362(/*)S
(Servers)294 1488 A
(are)126 1824 A
(loaded)252 1992 A
2286(in)S
(extended)336 2412 A
(memory)252 2790 A
3084(if)S
3210(in)S
(386)126 3336 A
(mode.)210 3504 A
3756(*/)S
1440 V
(06806)210 648 A
1362(if)S
1488((t)S
1614(<)S
1698(0))S
1824({)S
1530 V
(06807)210 648 A
(memp)168 1698 A
1908(=)S
(&mem[1];)336 1992 A
1620 V
(06808)210 648 A
(text_base)378 1698 A
2118(=)S
(0x100000)336 2202 A
2580(>>)S
(CLICK_SHIFT;)504 2706 A
1710 V
(06809)210 648 A
1362(})S
1800 V
(06810)210 648 A
(#endif)252 1026 A
1890 V
(06811)210 648 A
1362(if)S
((!isidlehardware(t)))840 1488 A
(lock_ready(rp);)630 2370 A
3042(/*)S
(IDLE,)210 3168 A
(HARDWARE)336 3420 A
(neveready)378 3798 A
4218(*/)S
1980 V
(06812)210 648 A
(rp->p_flags)462 1362 A
1866(=)S
1950(0;)S
2070 V
(06813)210 648 A
2160 V
(06814)210 648 A
(alloc_segments(rp);)798 1362 A
2250 V
(06815)210 648 A
1110(})S
2340 V
(06816)210 648 A
2430 V
(06817)210 648 A
(proc[NR_TASKS+INIT_PROC_NR].p_pid)1386 1110 A
2538(=)S
(1;/*)168 2622 A
(INIT)168 2832 A
3042(of)S
(course)252 3168 A
(has)126 3462 A
(pid)126 3630 A
3798(1)S
3882(*/)S
2520 V
(06818)210 648 A
(bill_ptr)336 1110 A
1488(=)S
(proc_addr(IDLE);)672 1572 A
2706(/*)S
2832(it)S
(has)126 2958 A
3126(to)S
(point)210 3252 A
(somewhere)378 3504 A
3924(*/)S
2610 V
(06819)210 648 A
(lock_pick_proc();)714 1110 A
2700 V
(06820)210 648 A
2790 V
(06821)210 648 A
1110(/*)S
(Now)126 1236 A
1404(go)S
1530(to)S
(the)126 1656 A
(assembly)336 1824 A
(code)168 2202 A
2412(to)S
(start)210 2538 A
(running)294 2790 A
(the)126 3126 A
(current)294 3294 A
(process.)336 3630 A
4008(*/)S
2880 V
(06822)210 648 A
(restart();)420 1110 A
2970 V
(06823)210 648 A
1026(})S
3240 V
(06826)210 648 A
(/*===========================================================================*)3276 1026 A
3330 V
(06827)210 648 A
1068(*)S
(panic)210 2580 A
4260(*)S
3420 V
(06828)210 648 A
(*===========================================================================*/)3276 1068 A
3510 V
(06829)210 648 A
(PUBLIC)252 1026 A
(void)168 1320 A
(panic(s,n))420 1530 A
3600 V
(06830)210 648 A
(_CONST)252 1026 A
(char)168 1320 A
(*s;)126 1530 A
3690 V
(06831)210 648 A
(int)126 1026 A
1194(n;)S
3780 V
(06832)210 648 A
1026({)S
3870 V
(06833)210 648 A
1026(/*)S
(The)126 1152 A
(system)252 1320 A
(has)126 1614 A
(run)126 1782 A
(aground)294 1950 A
2286(of)S
2412(a)S
(fatal)210 2496 A
(error.)252 2748 A
(Terminate)378 3084 A
(execution.)420 3504 A
3960 V
(06834)210 648 A
1068(*)S
1152(If)S
(the)126 1278 A
(panic)210 1446 A
(originated)420 1698 A
2160(in)S
2286(MM)S
2412(or)S
(FS,)126 2538 A
(the)126 2706 A
(string)252 2874 A
(will)168 3168 A
3378(be)S
(empty)210 3504 A
(and)126 3756 A
(the)126 3924 A
4050 V
(06835)210 648 A
1068(*)S
(file)168 1152 A
(system)252 1362 A
(already)294 1656 A
(syncked.)336 1992 A
2412(If)S
(the)126 2538 A
(panic)210 2706 A
(originates)420 2958 A
3420(in)S
(the)126 3546 A
(kernel,)294 3714 A
4050(we)S
(are)126 4176 A
4140 V
(06836)210 648 A
1068(*)S
(kind)168 1152 A
1362(of)S
(stuck.)252 1488 A
4230 V
(06837)210 648 A
1068(*/)S
4320 V
(06838)210 648 A
4410 V
(06839)210 648 A
1110(if)S
((*s)126 1236 A
1404(!=)S
1530(0))S
1656({)S
4500 V
(06840)210 648 A
(printf("\nKernel)672 1362 A
(panic:)252 2076 A
(%s",s);)294 2370 A
4590 V
(06841)210 648 A
1362(if)S
1488((n)S
1614(!=)S
(NO_NUM))294 1740 A
(printf(")336 2076 A
(%d",)168 2454 A
(n);)126 2664 A
4680 V
(06842)210 648 A
(printf("\n");)546 1362 A
4770 V
(06843)210 648 A
1110(})S
4860 V
(06844)210 648 A
(wreboot(RBT_PANIC);)798 1110 A
4950 V
(06845)210 648 A
1026(})S
8418 V
EP
%%Page: 82 82
BP
/slant 0 def
/height 0 def
630 V
12 B
648(82)S
11 R
2049(File:)S
2282(src/kernel/proc.c)S
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
990 V
7 LST
(++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++)3528 648 A
1080 V
(src/kernel/proc.c)714 2034 A
1170 V
(++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++)3528 648 A
1350 V
(06900)210 648 A
1026(/*)S
(This)168 1152 A
(file)168 1362 A
(contains)336 1572 A
(essentially)462 1950 A
(all)126 2454 A
2622(of)S
(the)126 2748 A
(process)294 2916 A
(and)126 3252 A
(message)294 3420 A
(handling.)378 3756 A
1440 V
(06901)210 648 A
1068(*)S
1152(It)S
(has)126 1278 A
(two)126 1446 A
(main)168 1614 A
(entry)210 1824 A
(points)252 2076 A
(from)168 2370 A
(the)126 2580 A
(outside:)336 2748 A
1530 V
(06902)210 648 A
1068(*)S
1620 V
(06903)210 648 A
1068(*)S
(sys_call:)378 1236 A
(called)252 1740 A
(when)168 2034 A
2244(a)S
(process)294 2328 A
2664(or)S
(task)168 2790 A
(does)168 3000 A
(SEND,)210 3210 A
(RECEIVE)294 3462 A
3798(or)S
(SENDREC)294 3924 A
1710 V
(06904)210 648 A
1068(*)S
(interrupt:)420 1236 A
(called)252 1698 A
1992(by)S
(interrupt)378 2118 A
(routines)336 2538 A
2916(to)S
(send)168 3042 A
3252(a)S
(message)294 3336 A
3672(to)S
(task)168 3798 A
1800 V
(06905)210 648 A
1068(*)S
1890 V
(06906)210 648 A
1068(*)S
1152(It)S
(also)168 1278 A
(has)126 1488 A
(several)294 1656 A
(minor)210 1992 A
(entry)210 2244 A
(points:)294 2496 A
1980 V
(06907)210 648 A
1068(*)S
2070 V
(06908)210 648 A
1068(*)S
(lock_ready:)462 1236 A
(put)126 1950 A
2118(a)S
(process)294 2202 A
2538(on)S
(one)126 2664 A
2832(of)S
(the)126 2958 A
(ready)210 3126 A
(queues)252 3378 A
3672(so)S
3798(it)S
(can)126 3924 A
4092(be)S
(run)126 4218 A
2160 V
(06909)210 648 A
1068(*)S
(lock_unready:)546 1236 A
(remove)252 1950 A
2244(a)S
(process)294 2328 A
(from)168 2664 A
(the)126 2874 A
(ready)210 3042 A
(queues)252 3294 A
2250 V
(06910)210 648 A
1068(*)S
(lock_sched:)462 1236 A
1950(a)S
(process)294 2034 A
(has)126 2370 A
(run)126 2538 A
(too)126 2706 A
(long;)210 2874 A
(schedule)336 3126 A
(another)294 3504 A
(one)126 3840 A
2340 V
(06911)210 648 A
1068(*)S
(lock_mini_send:)630 1236 A
(send)168 1950 A
2160(a)S
(message)294 2244 A
((used)210 2580 A
2832(by)S
(interrupt)378 2958 A
(signals,)336 3378 A
(etc.))210 3756 A
2430 V
(06912)210 648 A
1068(*)S
(lock_pick_proc:)630 1236 A
(pick)168 1950 A
2160(a)S
(process)294 2244 A
2580(to)S
(run)126 2706 A
((used)210 2874 A
3126(by)S
(system)252 3252 A
(initialization))630 3546 A
2520 V
(06913)210 648 A
1068(*)S
(unhold:)294 1236 A
(repeat)252 1950 A
(all)126 2244 A
(held-up)294 2412 A
(interrupts)420 2748 A
2610 V
(06914)210 648 A
1068(*/)S
2700 V
(06915)210 648 A
2790 V
(06916)210 648 A
(#include)336 1026 A
("kernel.h")420 1404 A
2880 V
(06917)210 648 A
(#include)336 1026 A
(<minix/callnr.h>)672 1404 A
2970 V
(06918)210 648 A
(#include)336 1026 A
(<minix/com.h>)546 1404 A
3060 V
(06919)210 648 A
(#include)336 1026 A
("proc.h")336 1404 A
3150 V
(06920)210 648 A
3240 V
(06921)210 648 A
(PRIVATE)294 1026 A
(unsigned)336 1362 A
(char)168 1740 A
(switching;)420 1950 A
2706(/*)S
(nonzero)294 2832 A
3168(to)S
(inhibit)294 3294 A
(interrupt())462 3630 A
4134(*/)S
3330 V
(06922)210 648 A
3420 V
(06923)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(int)126 1866 A
(mini_send,)420 2034 A
((struct)294 2496 A
(proc)168 2832 A
(*caller_ptr,)504 3042 A
(int)126 3588 A
(dest,)210 3756 A
3510 V
(06924)210 648 A
(message)294 1698 A
(*m_ptr))294 2034 A
2370();)S
3600 V
(06925)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(int)126 1866 A
(mini_rec,)378 2034 A
((struct)294 2454 A
(proc)168 2790 A
(*caller_ptr,)504 3000 A
(int)126 3546 A
(src,)168 3714 A
3690 V
(06926)210 648 A
(message)294 1698 A
(*m_ptr))294 2034 A
2370();)S
3780 V
(06927)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(ready,)252 2076 A
((struct)294 2370 A
(proc)168 2706 A
(*rp))168 2916 A
3126();)S
3870 V
(06928)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(sched,)252 2076 A
((void))252 2370 A
2664();)S
3960 V
(06929)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(unready,)336 2076 A
((struct)294 2454 A
(proc)168 2790 A
(*rp))168 3000 A
3210();)S
4050 V
(06930)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(pick_proc,)420 2076 A
((void))252 2538 A
2832();)S
4140 V
(06931)210 648 A
4230 V
(06932)210 648 A
(#define)294 1026 A
(CopyMess(s,sp,sm,dp,dm))966 1362 A
2370(\)S
4320 V
(06933)210 648 A
(cp_mess(s,)420 1362 A
((sp)->p_map[D].mem_phys,)1008 1824 A
((vir_bytes)sm,)588 2874 A
((dp)->p_map[D].mem_phys,)1008 3504 A
((vir_bytes)dm))588 4554 A
4410 V
(06934)210 648 A
4500 V
(06935)210 648 A
(/*===========================================================================*)3276 1026 A
4590 V
(06936)210 648 A
1068(*)S
(interrupt)378 2370 A
4260(*)S
4680 V
(06937)210 648 A
(*===========================================================================*/)3276 1068 A
4770 V
(06938)210 648 A
(PUBLIC)252 1026 A
(void)168 1320 A
(interrupt(task))630 1530 A
4860 V
(06939)210 648 A
(int)126 1026 A
(task;)210 1194 A
2370(/*)S
(number)252 2496 A
2790(of)S
(task)168 2916 A
3126(to)S
3252(be)S
(started)294 3378 A
3714(*/)S
4950 V
(06940)210 648 A
1026({)S
5040 V
(06941)210 648 A
1026(/*)S
1152(An)S
(interrupt)378 1278 A
(has)126 1698 A
(occurred.)378 1866 A
(Schedule)336 2328 A
(the)126 2706 A
(task)168 2874 A
(that)168 3084 A
(handles)294 3294 A
(it.)126 3630 A
3798(*/)S
5130 V
(06942)210 648 A
5220 V
(06943)210 648 A
(register)336 1110 A
(struct)252 1488 A
(proc)168 1782 A
(*rp;)168 1992 A
2370(/*)S
(pointer)294 2496 A
2832(to)S
(task's)252 2958 A
(proc)168 3252 A
(entry)210 3462 A
3714(*/)S
5310 V
(06944)210 648 A
5400 V
(06945)210 648 A
1110(rp)S
1236(=)S
(proc_addr(task);)672 1320 A
5490 V
(06946)210 648 A
5580 V
(06947)210 648 A
1110(/*)S
1236(If)S
(this)168 1362 A
(call)168 1572 A
(would)210 1782 A
(compete)294 2034 A
(with)168 2370 A
(other)210 2580 A
(process-switching)714 2832 A
(functions,)420 3588 A
(put)126 4050 A
5670 V
(06948)210 648 A
1152(*)S
1236(it)S
1362(on)S
(the)126 1488 A
('held')252 1656 A
(queue)210 1950 A
2202(to)S
2328(be)S
(flushed)294 2454 A
2790(at)S
(the)126 2916 A
(next)168 3084 A
(non-competing)546 3294 A
(restart().)420 3882 A
5760 V
(06949)210 648 A
1152(*)S
(The)126 1236 A
(competing)378 1404 A
(conditions)420 1824 A
(are:)168 2286 A
5850 V
(06950)210 648 A
1152(*)S
((1))126 1236 A
(k_reenter)378 1404 A
1824(==)S
((typeof)294 1950 A
(k_reenter))420 2286 A
(-1:)126 2748 A
5940 V
(06951)210 648 A
1152(*)S
(Call)168 1404 A
(from)168 1614 A
(the)126 1824 A
(task)168 1992 A
(level,)252 2202 A
(typically)378 2496 A
(from)168 2916 A
3126(an)S
(output)252 3252 A
(interrupt)378 3546 A
6030 V
(06952)210 648 A
1152(*)S
(routine.)336 1404 A
1824(An)S
(interrupt)378 1950 A
(handler)294 2370 A
(might)210 2706 A
(reenter)294 2958 A
(interrupt().)504 3294 A
(Rare,)210 3882 A
6120 V
(06953)210 648 A
1152(*)S
1404(so)S
(not)126 1530 A
(worth)210 1698 A
(special)294 1950 A
(treatment.)420 2286 A
6210 V
(06954)210 648 A
1152(*)S
((2))126 1236 A
(k_reenter)378 1404 A
1824(>)S
1908(0:)S
8418 V
EP
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/slant 0 def
/height 0 def
630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
2049(File:)S
2282(src/kernel/proc.c)S
12 B
4308(83)S
900 V
7 LST
(06955)210 648 A
1152(*)S
(Call)168 1404 A
(from)168 1614 A
1824(a)S
(nested)252 1908 A
(interrupt)378 2202 A
(handler.)336 2622 A
3042(A)S
(previous)336 3126 A
(interrupt)378 3504 A
(handler)294 3924 A
990 V
(06956)210 648 A
1152(*)S
(might)210 1404 A
1656(be)S
(inside)252 1782 A
(interrupt())462 2076 A
2580(or)S
(sys_call().)462 2706 A
1080 V
(06957)210 648 A
1152(*)S
((3))126 1236 A
(switching)378 1404 A
1824(!=)S
1950(0:)S
1170 V
(06958)210 648 A
1152(*)S
(Some)168 1404 A
(process-switching)714 1614 A
(function)336 2370 A
(other)210 2748 A
(than)168 3000 A
(interrupt())462 3210 A
3714(is)S
(being)210 3840 A
1260 V
(06959)210 648 A
1152(*)S
(called)252 1404 A
(from)168 1698 A
(the)126 1908 A
(task)168 2076 A
(level,)252 2286 A
(typically)378 2580 A
(sched())294 3000 A
(from)168 3336 A
(CLOCK.)252 3546 A
3882(An)S
1350 V
(06960)210 648 A
1152(*)S
(interrupt)378 1404 A
(handler)294 1824 A
(might)210 2160 A
(call)168 2412 A
(interrupt)378 2622 A
(and)126 3042 A
(pass)168 3210 A
(the)126 3420 A
(k_reenter)378 3588 A
(test.)210 4008 A
1440 V
(06961)210 648 A
1152(*/)S
1530 V
(06962)210 648 A
1110(if)S
((k_reenter)420 1236 A
1698(!=)S
1824(0)S
1908(||)S
(switching))420 2034 A
2496({)S
1620 V
(06963)210 648 A
(lock();)294 1362 A
1710 V
(06964)210 648 A
1362(if)S
((!rp->p_int_held))714 1488 A
2244({)S
1800 V
(06965)210 648 A
(rp->p_int_held)588 1698 A
2328(=)S
(TRUE;)210 2412 A
1890 V
(06966)210 648 A
1698(if)S
((held_head)420 1824 A
2286(!=)S
(NIL_PROC))378 2412 A
1980 V
(06967)210 648 A
(held_tail->p_nextheld)882 2034 A
2958(=)S
(rp;)126 3042 A
2070 V
(06968)210 648 A
(else)168 1698 A
2160 V
(06969)210 648 A
(held_head)378 2034 A
2454(=)S
(rp;)126 2538 A
2250 V
(06970)210 648 A
(held_tail)378 1698 A
2118(=)S
(rp;)126 2202 A
2340 V
(06971)210 648 A
(rp->p_nextheld)588 1698 A
2328(=)S
(NIL_PROC;)378 2412 A
2430 V
(06972)210 648 A
1362(})S
2520 V
(06973)210 648 A
(unlock();)378 1362 A
2610 V
(06974)210 648 A
(return;)294 1362 A
2700 V
(06975)210 648 A
1110(})S
2790 V
(06976)210 648 A
2880 V
(06977)210 648 A
1110(/*)S
1236(If)S
(task)168 1362 A
1572(is)S
(not)126 1698 A
(waiting)294 1866 A
(for)126 2202 A
2370(an)S
(interrupt,)420 2496 A
(record)252 2958 A
(the)126 3252 A
(blockage.)378 3420 A
3840(*/)S
2970 V
(06978)210 648 A
1110(if)S
1236(()S
((rp->p_flags)504 1320 A
1866(&)S
((RECEIVING)420 1950 A
2412(|)S
(SENDING)))378 2496 A
2916(!=)S
(RECEIVING)378 3042 A
3462(||)S
3060 V
(06979)210 648 A
(!isrxhardware(rp->p_getfrom)))1218 1278 A
2538({)S
3150 V
(06980)210 648 A
(rp->p_int_blocked)714 1362 A
2118(=)S
(TRUE;)210 2202 A
3240 V
(06981)210 648 A
(return;)294 1362 A
3330 V
(06982)210 648 A
1110(})S
3420 V
(06983)210 648 A
3510 V
(06984)210 648 A
1110(/*)S
(Destination)462 1236 A
1740(is)S
(waiting)294 1866 A
(for)126 2202 A
2370(an)S
(interrupt.)420 2496 A
3600 V
(06985)210 648 A
1152(*)S
(Send)168 1236 A
1446(it)S
1572(a)S
(message)294 1656 A
(with)168 1992 A
(source)252 2202 A
(HARDWARE)336 2496 A
(and)126 2874 A
(type)168 3042 A
(HARD_INT.)378 3252 A
3690 V
(06986)210 648 A
1152(*)S
1236(No)S
(more)168 1362 A
(information)462 1572 A
(can)126 2076 A
2244(be)S
(reliably)336 2370 A
(provided)336 2748 A
(since)210 3126 A
(interrupt)378 3378 A
(messages)336 3798 A
3780 V
(06987)210 648 A
1152(*)S
(are)126 1236 A
(not)126 1404 A
(queued.)294 1572 A
3870 V
(06988)210 648 A
1152(*/)S
3960 V
(06989)210 648 A
(rp->p_messbuf->m_source)966 1110 A
2118(=)S
(HARDWARE;)378 2202 A
4050 V
(06990)210 648 A
(rp->p_messbuf->m_type)882 1110 A
2034(=)S
(HARD_INT;)378 2118 A
4140 V
(06991)210 648 A
(rp->p_flags)462 1110 A
1614(&=)S
(304RECEIVING;)462 1740 A
4230 V
(06992)210 648 A
(rp->p_int_blocked)714 1110 A
1866(=)S
(FALSE;)252 1950 A
4320 V
(06993)210 648 A
4410 V
(06994)210 648 A
1152(/*)S
(Make)168 1278 A
1488(rp)S
(ready)210 1614 A
(and)126 1866 A
(run)126 2034 A
2202(it)S
(unless)252 2328 A
2622(a)S
(task)168 2706 A
2916(is)S
(already)294 3042 A
(running.)336 3378 A
(This)168 3798 A
4008(is)S
4500 V
(06995)210 648 A
1194(*)S
(ready(rp))378 1278 A
(in-line)294 1698 A
(for)126 2034 A
(speed.)252 2202 A
4590 V
(06996)210 648 A
1194(*/)S
4680 V
(06997)210 648 A
1110(if)S
((rdy_head[TASK_Q])714 1236 A
1992(!=)S
(NIL_PROC))378 2118 A
4770 V
(06998)210 648 A
(rdy_tail[TASK_Q]->p_nextready)1218 1362 A
2622(=)S
(rp;)126 2706 A
4860 V
(06999)210 648 A
(else)168 1110 A
4950 V
(07000)210 648 A
(proc_ptr)336 1362 A
1740(=)S
(rdy_head[TASK_Q])672 1824 A
2538(=)S
(rp;)126 2622 A
5040 V
(07001)210 648 A
(rdy_tail[TASK_Q])672 1110 A
1824(=)S
(rp;)126 1908 A
5130 V
(07002)210 648 A
(rp->p_nextready)630 1110 A
1782(=)S
(NIL_PROC;)378 1866 A
5220 V
(07003)210 648 A
1026(})S
5400 V
(07005)210 648 A
(/*===========================================================================*)3276 1026 A
5490 V
(07006)210 648 A
1068(*)S
(sys_call)336 2370 A
4260(*)S
5580 V
(07007)210 648 A
(*===========================================================================*/)3276 1068 A
5670 V
(07008)210 648 A
(PUBLIC)252 1026 A
(int)126 1320 A
(sys_call(function,)756 1488 A
(src_dest,)378 2286 A
(m_ptr))252 2706 A
5760 V
(07009)210 648 A
(int)126 1026 A
(function;)378 1194 A
2370(/*)S
(SEND,)210 2496 A
(RECEIVE,)336 2748 A
3126(or)S
(BOTH)168 3252 A
3462(*/)S
5850 V
(07010)210 648 A
(int)126 1026 A
(src_dest;)378 1194 A
2370(/*)S
(source)252 2496 A
2790(to)S
(receive)294 2916 A
(from)168 3252 A
3462(or)S
(dest)168 3588 A
3798(to)S
(send)168 3924 A
4134(to)S
4260(*/)S
5940 V
(07011)210 648 A
(message)294 1026 A
(*m_ptr;)294 1362 A
2370(/*)S
(pointer)294 2496 A
2832(to)S
(message)294 2958 A
3294(*/)S
6030 V
(07012)210 648 A
1026({)S
6120 V
(07013)210 648 A
1026(/*)S
(The)126 1152 A
(only)168 1320 A
(system)252 1530 A
(calls)210 1824 A
(that)168 2076 A
(exist)210 2286 A
2538(in)S
(MINIX)210 2664 A
(are)126 2916 A
(sending)294 3084 A
(and)126 3420 A
(receiving)378 3588 A
6210 V
(07014)210 648 A
1068(*)S
(messages.)378 1152 A
(These)210 1614 A
(are)126 1866 A
(done)168 2034 A
2244(by)S
(trapping)336 2370 A
2748(to)S
(the)126 2874 A
(kernel)252 3042 A
(with)168 3336 A
3546(an)S
(INT)126 3672 A
(instruction.)504 3840 A
8418 V
EP
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/slant 0 def
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630 V
12 B
648(84)S
11 R
2049(File:)S
2282(src/kernel/proc.c)S
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
900 V
7 LST
(07015)210 648 A
1068(*)S
(The)126 1152 A
(trap)168 1320 A
1530(is)S
(caught)252 1656 A
(and)126 1950 A
(sys_call())420 2118 A
2580(is)S
(called)252 2706 A
3000(to)S
(send)168 3126 A
3336(or)S
(receive)294 3462 A
3798(a)S
(message)294 3882 A
990 V
(07016)210 648 A
1068(*)S
((or)126 1152 A
(both).)252 1320 A
(The)126 1614 A
(caller)252 1782 A
2076(is)S
(always)252 2202 A
(given)210 2496 A
2748(by)S
(proc_ptr.)378 2874 A
1080 V
(07017)210 648 A
1068(*/)S
1170 V
(07018)210 648 A
1260 V
(07019)210 648 A
(register)336 1110 A
(struct)252 1488 A
(proc)168 1782 A
(*rp;)168 1992 A
1350 V
(07020)210 648 A
(int)126 1110 A
1278(n;)S
1440 V
(07021)210 648 A
1530 V
(07022)210 648 A
1110(/*)S
(Check)210 1236 A
(for)126 1488 A
(bad)126 1656 A
(system)252 1824 A
(call)168 2118 A
(parameters.)462 2328 A
2832(*/)S
1620 V
(07023)210 648 A
1110(if)S
((!isoksrc_dest(src_dest)))1050 1236 A
(return(E_BAD_SRC);)756 2328 A
1710 V
(07024)210 648 A
1110(rp)S
1236(=)S
(proc_ptr;)378 1320 A
1800 V
(07025)210 648 A
1890 V
(07026)210 648 A
1110(if)S
((isuserp(rp))504 1236 A
1782(&&)S
(function)336 1908 A
2286(!=)S
(BOTH))210 2412 A
(return(E_NO_PERM);)756 2664 A
1980 V
(07027)210 648 A
2070 V
(07028)210 648 A
1110(/*)S
(The)126 1236 A
(parameters)420 1404 A
(are)126 1866 A
(ok.)126 2034 A
2202(Do)S
(the)126 2328 A
(call.)210 2496 A
2748(*/)S
2160 V
(07029)210 648 A
1110(if)S
((function)378 1236 A
1656(&)S
(SEND))210 1740 A
1992({)S
2250 V
(07030)210 648 A
1362(/*)S
(Function)336 1488 A
1866(=)S
(SEND)168 1950 A
2160(or)S
(BOTH.)210 2286 A
2538(*/)S
2340 V
(07031)210 648 A
1362(n)S
1446(=)S
(mini_send(rp,)546 1530 A
(src_dest,)378 2118 A
(m_ptr);)294 2538 A
2430 V
(07032)210 648 A
1362(if)S
((function)378 1488 A
1908(==)S
(SEND)168 2034 A
2244(||)S
2370(n)S
2454(!=)S
(OK))126 2580 A
2520 V
(07033)210 648 A
(return(n);)420 1698 A
2370(/*)S
(done,)210 2496 A
2748(or)S
(SEND)168 2874 A
(failed)252 3084 A
3378(*/)S
2610 V
(07034)210 648 A
1110(})S
2700 V
(07035)210 648 A
2790 V
(07036)210 648 A
1110(/*)S
(Function)336 1236 A
1614(=)S
(RECEIVE)294 1698 A
2034(or)S
(BOTH.)210 2160 A
2880 V
(07037)210 648 A
1152(*)S
1236(We)S
(have)168 1362 A
(checked)294 1572 A
(user)168 1908 A
(calls)210 2118 A
(are)126 2370 A
(BOTH,)210 2538 A
(and)126 2790 A
(trust)210 2958 A
('function')420 3210 A
(otherwise.)420 3672 A
2970 V
(07038)210 648 A
1152(*/)S
3060 V
(07039)210 648 A
(return(mini_rec(rp,)798 1110 A
(src_dest,)378 1950 A
(m_ptr));)336 2370 A
3150 V
(07040)210 648 A
1026(})S
3330 V
(07042)210 648 A
(/*===========================================================================*)3276 1026 A
3420 V
(07043)210 648 A
1068(*)S
(mini_send)378 2370 A
4260(*)S
3510 V
(07044)210 648 A
(*===========================================================================*/)3276 1068 A
3600 V
(07045)210 648 A
(PRIVATE)294 1026 A
(int)126 1362 A
(mini_send(caller_ptr,)882 1530 A
(dest,)210 2454 A
(m_ptr))252 2706 A
3690 V
(07046)210 648 A
(register)336 1026 A
(struct)252 1404 A
(proc)168 1698 A
(*caller_ptr;)504 1908 A
2706(/*)S
(who)126 2832 A
3000(is)S
(trying)252 3126 A
3420(to)S
(send)168 3546 A
3756(a)S
(message?)336 3840 A
4218(*/)S
3780 V
(07047)210 648 A
(int)126 1026 A
(dest;)210 1194 A
2370(/*)S
2496(to)S
(whom)168 2622 A
2832(is)S
(message)294 2958 A
(being)210 3294 A
(sent?)210 3546 A
3798(*/)S
3870 V
(07048)210 648 A
(message)294 1026 A
(*m_ptr;)294 1362 A
2370(/*)S
(pointer)294 2496 A
2832(to)S
(message)294 2958 A
(buffer)252 3294 A
3588(*/)S
3960 V
(07049)210 648 A
1026({)S
4050 V
(07050)210 648 A
1026(/*)S
(Send)168 1152 A
1362(a)S
(message)294 1446 A
(from)168 1782 A
('caller_ptr')504 1992 A
2538(to)S
('dest'.)294 2664 A
3000(If)S
('dest')252 3126 A
3420(is)S
(blocked)294 3546 A
(waiting)294 3882 A
4140 V
(07051)210 648 A
1068(*)S
(for)126 1152 A
(this)168 1320 A
(message,)336 1530 A
(copy)168 1908 A
(the)126 2118 A
(message)294 2286 A
2622(to)S
2748(it)S
(and)126 2874 A
(unblock)294 3042 A
('dest'.)294 3378 A
3714(If)S
('dest')252 3840 A
4134(is)S
4230 V
(07052)210 648 A
1068(*)S
(not)126 1152 A
(waiting)294 1320 A
1656(at)S
(all,)168 1782 A
1992(or)S
2118(is)S
(waiting)294 2244 A
(for)126 2580 A
(another)294 2748 A
(source,)294 3084 A
(queue)210 3420 A
('caller_ptr'.)546 3672 A
4320 V
(07053)210 648 A
1068(*/)S
4410 V
(07054)210 648 A
4500 V
(07055)210 648 A
(register)336 1110 A
(struct)252 1488 A
(proc)168 1782 A
(*dest_ptr,)420 1992 A
(*next_ptr;)420 2454 A
4590 V
(07056)210 648 A
(vir_bytes)378 1110 A
(vb;)126 1530 A
2370(/*)S
(message)294 2496 A
(buffer)252 2832 A
(pointer)294 3126 A
3462(as)S
(vir_bytes)378 3588 A
4008(*/)S
4680 V
(07057)210 648 A
(vir_clicks)420 1110 A
(vlo,)168 1572 A
(vhi;)168 1782 A
2370(/*)S
(virtual)294 2496 A
(clicks)252 2832 A
(containing)420 3126 A
(message)294 3588 A
3924(to)S
(send)168 4050 A
4260(*/)S
4770 V
(07058)210 648 A
4860 V
(07059)210 648 A
1110(/*)S
(User)168 1236 A
(processes)378 1446 A
(are)126 1866 A
(only)168 2034 A
(allowed)294 2244 A
2580(to)S
(send)168 2706 A
2916(to)S
3042(FS)S
(and)126 3168 A
(MM.)126 3336 A
(Check)210 3546 A
(for)126 3798 A
(this.)210 3966 A
4218(*/)S
4950 V
(07060)210 648 A
1110(if)S
((isuserp(caller_ptr))840 1236 A
2118(&&)S
(!issysentn(dest)))714 2244 A
(return(E_BAD_DEST);)798 3000 A
5040 V
(07061)210 648 A
(dest_ptr)336 1110 A
1488(=)S
(proc_addr(dest);)672 1572 A
2370(/*)S
(pointer)294 2496 A
2832(to)S
(destination's)546 2958 A
(proc)168 3546 A
(entry)210 3756 A
4008(*/)S
5130 V
(07062)210 648 A
1110(if)S
((dest_ptr->p_flags)756 1236 A
2034(&)S
(P_SLOT_FREE))504 2118 A
(return(E_BAD_DEST);)798 2664 A
3714(/*)S
(dead)168 3840 A
(dest)168 4050 A
4260(*/)S
5220 V
(07063)210 648 A
5310 V
(07064)210 648 A
1110(/*)S
(This)168 1236 A
(check)210 1446 A
(allows)252 1698 A
1992(a)S
(message)294 2076 A
2412(to)S
2538(be)S
(anywhere)336 2664 A
3042(in)S
(data)168 3168 A
3378(or)S
(stack)210 3504 A
3756(or)S
(gap.)168 3882 A
5400 V
(07065)210 648 A
1152(*)S
1236(It)S
(will)168 1362 A
(have)168 1572 A
1782(to)S
1908(be)S
(made)168 2034 A
(more)168 2244 A
(elaborate)378 2454 A
(later)210 2874 A
(for)126 3126 A
(machines)336 3294 A
(which)210 3672 A
5490 V
(07066)210 648 A
1152(*)S
(don't)210 1236 A
(have)168 1488 A
(the)126 1698 A
(gap)126 1866 A
(mapped.)294 2034 A
5580 V
(07067)210 648 A
1152(*/)S
5670 V
(07068)210 648 A
1110(vb)S
1236(=)S
((vir_bytes))462 1320 A
(m_ptr;)252 1824 A
5760 V
(07069)210 648 A
(vlo)126 1110 A
1278(=)S
1362(vb)S
1488(>>)S
(CLICK_SHIFT;)504 1614 A
2370(/*)S
(vir)126 2496 A
(click)210 2664 A
(for)126 2916 A
(bottom)252 3084 A
3378(of)S
(message)294 3504 A
3840(*/)S
5850 V
(07070)210 648 A
(vhi)126 1110 A
1278(=)S
((vb)126 1362 A
1530(+)S
(MESS_SIZE)378 1614 A
2034(-)S
2118(1))S
2244(>>)S
(CLICK_SHIFT;)504 2370 A
3042(/*)S
(vir)126 3168 A
(click)210 3336 A
(for)126 3588 A
(top)126 3756 A
3924(of)S
(msg)126 4050 A
4218(*/)S
5940 V
(07071)210 648 A
1110(if)S
((vlo)168 1236 A
1446(<)S
(caller_ptr->p_map[D].mem_vir)1176 1530 A
2748(||)S
(vlo)126 2874 A
3042(>)S
(vhi)126 3126 A
3294(||)S
6030 V
(07072)210 648 A
(vhi)126 1278 A
1446(>=)S
(caller_ptr->p_map[S].mem_vir)1176 1572 A
2790(+)S
(caller_ptr->p_map[S].mem_len))1218 2874 A
6120 V
(07073)210 648 A
(return(EFAULT);)630 1362 A
6210 V
(07074)210 648 A
8418 V
EP
%%Page: 85 85
BP
/slant 0 def
/height 0 def
630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
2049(File:)S
2282(src/kernel/proc.c)S
12 B
4308(85)S
900 V
7 LST
(07075)210 648 A
1110(/*)S
(Check)210 1236 A
(for)126 1488 A
(deadlock)336 1656 A
2034(by)S
('caller_ptr')504 2160 A
(and)126 2706 A
('dest')252 2874 A
(sending)294 3168 A
3504(to)S
(each)168 3630 A
(other.)252 3840 A
4134(*/)S
990 V
(07076)210 648 A
1110(if)S
((dest_ptr->p_flags)756 1236 A
2034(&)S
(SENDING))336 2118 A
2496({)S
1080 V
(07077)210 648 A
(next_ptr)336 1362 A
1740(=)S
(proc_addr(dest_ptr->p_sendto);)1260 1824 A
1170 V
(07078)210 648 A
(while)210 1362 A
((TRUE))252 1614 A
1908({)S
1260 V
(07079)210 648 A
1698(if)S
((next_ptr)378 1824 A
2244(==)S
(caller_ptr))462 2370 A
(return(ELOCKED);)672 2874 A
1350 V
(07080)210 648 A
1698(if)S
((next_ptr->p_flags)756 1824 A
2622(&)S
(SENDING))336 2706 A
1440 V
(07081)210 648 A
(next_ptr)336 2034 A
2412(=)S
(proc_addr(next_ptr->p_sendto);)1260 2496 A
1530 V
(07082)210 648 A
(else)168 1698 A
1620 V
(07083)210 648 A
(break;)252 2034 A
1710 V
(07084)210 648 A
1362(})S
1800 V
(07085)210 648 A
1110(})S
1890 V
(07086)210 648 A
1980 V
(07087)210 648 A
1110(/*)S
(Check)210 1236 A
1488(to)S
(see)126 1614 A
1782(if)S
('dest')252 1908 A
2202(is)S
(blocked)294 2328 A
(waiting)294 2664 A
(for)126 3000 A
(this)168 3168 A
(message.)336 3378 A
3756(*/)S
2070 V
(07088)210 648 A
1110(if)S
1236(()S
((dest_ptr->p_flags)756 1320 A
2118(&)S
((RECEIVING)420 2202 A
2664(|)S
(SENDING)))378 2748 A
3168(==)S
(RECEIVING)378 3294 A
3714(&&)S
2160 V
(07089)210 648 A
((dest_ptr->p_getfrom)840 1320 A
2202(==)S
(ANY)126 2328 A
2496(||)S
2250 V
(07090)210 648 A
(dest_ptr->p_getfrom)798 1362 A
2202(==)S
(proc_number(caller_ptr))))1050 2328 A
3420({)S
2340 V
(07091)210 648 A
1362(/*)S
(Destination)462 1488 A
1992(is)S
(indeed)252 2118 A
(waiting)294 2412 A
(for)126 2748 A
(this)168 2916 A
(message.)336 3126 A
3504(*/)S
2430 V
(07092)210 648 A
(CopyMess(proc_number(caller_ptr),)1386 1362 A
(caller_ptr,)462 2790 A
(m_ptr,)252 3294 A
(dest_ptr,)378 3588 A
2520 V
(07093)210 648 A
(dest_ptr->p_messbuf);)882 1740 A
2610 V
(07094)210 648 A
(dest_ptr->p_flags)714 1362 A
2118(&=)S
(304RECEIVING;)462 2244 A
3042(/*)S
(deblock)294 3168 A
(destination)462 3504 A
4008(*/)S
2700 V
(07095)210 648 A
1362(if)S
((dest_ptr->p_flags)756 1488 A
2286(==)S
2412(0))S
(ready(dest_ptr);)672 2538 A
2790 V
(07096)210 648 A
1110(})S
(else)168 1194 A
1404({)S
2880 V
(07097)210 648 A
1362(/*)S
(Destination)462 1488 A
1992(is)S
(not)126 2118 A
(waiting.)336 2286 A
(Block)210 2706 A
(and)126 2958 A
(queue)210 3126 A
(caller.)294 3378 A
3714(*/)S
2970 V
(07098)210 648 A
(caller_ptr->p_messbuf)882 1362 A
2286(=)S
(m_ptr;)252 2370 A
3060 V
(07099)210 648 A
1362(if)S
((caller_ptr->p_flags)840 1488 A
2370(==)S
2496(0))S
(unready(caller_ptr);)840 2622 A
3150 V
(07100)210 648 A
(caller_ptr->p_flags)798 1362 A
2202(|=)S
(SENDING;)336 2328 A
3240 V
(07101)210 648 A
(caller_ptr->p_sendto=)882 1362 A
(dest;)210 2286 A
3330 V
(07102)210 648 A
3420 V
(07103)210 648 A
1362(/*)S
(Process)294 1488 A
1824(is)S
(now)126 1950 A
(blocked.)336 2118 A
(Put)126 2538 A
2706(in)S
2832(on)S
(the)126 2958 A
(destination's)546 3126 A
(queue.)252 3714 A
4008(*/)S
3510 V
(07104)210 648 A
1362(if)S
1488(()S
((next_ptr)378 1572 A
1992(=)S
(dest_ptr->p_callerq))840 2076 A
2958(==)S
(NIL_PROC))378 3084 A
3600 V
(07105)210 648 A
(dest_ptr->p_callerq)798 1698 A
2538(=)S
(caller_ptr;)462 2622 A
3690 V
(07106)210 648 A
(else)168 1362 A
1572({)S
3780 V
(07107)210 648 A
(while)210 1698 A
((next_ptr->p_sendlink)882 1950 A
2874(!=)S
(NIL_PROC))378 3000 A
3870 V
(07108)210 648 A
(next_ptr)336 2034 A
2412(=)S
(next_ptr->p_sendlink;)882 2496 A
3960 V
(07109)210 648 A
(next_ptr->p_sendlink)840 1698 A
2580(=)S
(caller_ptr;)462 2664 A
4050 V
(07110)210 648 A
1362(})S
4140 V
(07111)210 648 A
(caller_ptr->p_sendlink)924 1362 A
2328(=)S
(NIL_PROC;)378 2412 A
4230 V
(07112)210 648 A
1110(})S
4320 V
(07113)210 648 A
(return(OK);)462 1110 A
4410 V
(07114)210 648 A
1026(})S
4590 V
(07116)210 648 A
(/*===========================================================================*)3276 1026 A
4680 V
(07117)210 648 A
1068(*)S
(mini_rec)336 2370 A
4260(*)S
4770 V
(07118)210 648 A
(*===========================================================================*/)3276 1068 A
4860 V
(07119)210 648 A
(PRIVATE)294 1026 A
(int)126 1362 A
(mini_rec(caller_ptr,)840 1530 A
(src,)168 2412 A
(m_ptr))252 2622 A
4950 V
(07120)210 648 A
(register)336 1026 A
(struct)252 1404 A
(proc)168 1698 A
(*caller_ptr;)504 1908 A
2706(/*)S
(process)294 2832 A
(trying)252 3168 A
3462(to)S
(get)126 3588 A
(message)294 3756 A
4092(*/)S
5040 V
(07121)210 648 A
(int)126 1026 A
(src;)168 1194 A
2370(/*)S
(which)210 2496 A
(message)294 2748 A
(source)252 3084 A
3378(is)S
(wanted)252 3504 A
((or)126 3798 A
(ANY))168 3966 A
4176(*/)S
5130 V
(07122)210 648 A
(message)294 1026 A
(*m_ptr;)294 1362 A
2370(/*)S
(pointer)294 2496 A
2832(to)S
(message)294 2958 A
(buffer)252 3294 A
3588(*/)S
5220 V
(07123)210 648 A
1026({)S
5310 V
(07124)210 648 A
1026(/*)S
1152(A)S
(process)294 1236 A
1572(or)S
(task)168 1698 A
(wants)210 1908 A
2160(to)S
(get)126 2286 A
2454(a)S
(message.)336 2538 A
2958(If)S
(one)126 3084 A
3252(is)S
(already)294 3378 A
(queued,)294 3714 A
5400 V
(07125)210 648 A
1068(*)S
(acquire)294 1152 A
1488(it)S
(and)126 1614 A
(deblock)294 1782 A
(the)126 2118 A
(sender.)294 2286 A
2664(If)S
2790(no)S
(message)294 2916 A
(from)168 3252 A
(the)126 3462 A
(desired)294 3630 A
(source)252 3966 A
5490 V
(07126)210 648 A
1068(*)S
1152(is)S
(available,)420 1278 A
(block)210 1740 A
(the)126 1992 A
(caller.)294 2160 A
2538(No)S
(need)168 2664 A
2874(to)S
(check)210 3000 A
(parameters)420 3252 A
(for)126 3714 A
(validity.)378 3882 A
5580 V
(07127)210 648 A
1068(*)S
(Users)210 1152 A
(calls)210 1404 A
(are)126 1656 A
(always)252 1824 A
(sendrec(),)420 2118 A
(and)126 2580 A
(mini_send())462 2748 A
(has)126 3252 A
(checked)294 3420 A
(already.)336 3756 A
5670 V
(07128)210 648 A
1068(*)S
(Calls)210 1152 A
(from)168 1404 A
(the)126 1614 A
(tasks,)252 1782 A
(MM,)126 2076 A
(and)126 2244 A
2412(FS)S
(are)126 2538 A
(trusted.)336 2706 A
5760 V
(07129)210 648 A
1068(*/)S
5850 V
(07130)210 648 A
5940 V
(07131)210 648 A
(register)336 1110 A
(struct)252 1488 A
(proc)168 1782 A
(*sender_ptr;)504 1992 A
6030 V
(07132)210 648 A
(register)336 1110 A
(struct)252 1488 A
(proc)168 1782 A
(*previous_ptr;)588 1992 A
6120 V
(07133)210 648 A
6210 V
(07134)210 648 A
1110(/*)S
(Check)210 1236 A
1488(to)S
(see)126 1614 A
1782(if)S
1908(a)S
(message)294 1992 A
(from)168 2328 A
(desired)294 2538 A
(source)252 2874 A
3168(is)S
(already)294 3294 A
(available.)420 3630 A
4092(*/)S
8418 V
EP
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/slant 0 def
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630 V
12 B
648(86)S
11 R
2049(File:)S
2282(src/kernel/proc.c)S
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
900 V
7 LST
(07135)210 648 A
1110(if)S
((!(caller_ptr->p_flags)924 1236 A
2202(&)S
(SENDING)))378 2286 A
2706({)S
990 V
(07136)210 648 A
1362(/*)S
(Check)210 1488 A
(caller)252 1740 A
(queue.)252 2034 A
2328(*/)S
1080 V
(07137)210 648 A
(for)126 1194 A
((sender_ptr)462 1362 A
1866(=)S
(caller_ptr->p_callerq;)924 1950 A
(sender_ptr)420 2916 A
3378(!=)S
(NIL_PROC;)378 3504 A
1170 V
(07138)210 648 A
(previous_ptr)504 1404 A
1950(=)S
(sender_ptr,)462 2034 A
(sender_ptr)420 2538 A
3000(=)S
(sender_ptr->p_sendlink))966 3084 A
4092({)S
1260 V
(07139)210 648 A
1362(if)S
((src)168 1488 A
1698(==)S
(ANY)126 1824 A
1992(||)S
(src)126 2118 A
2286(==)S
(proc_number(sender_ptr)))1008 2412 A
3462({)S
1350 V
(07140)210 648 A
1698(/*)S
1824(An)S
(acceptable)420 1950 A
(message)294 2412 A
(has)126 2748 A
(been)168 2916 A
(found.)252 3126 A
3420(*/)S
1440 V
(07141)210 648 A
(CopyMess(proc_number(sender_ptr),)1386 1698 A
(sender_ptr,)462 3126 A
1530 V
(07142)210 648 A
(sender_ptr->p_messbuf,)924 2076 A
(caller_ptr,)462 3042 A
(m_ptr);)294 3546 A
1620 V
(07143)210 648 A
1698(if)S
((sender_ptr)462 1824 A
2328(==)S
(caller_ptr->p_callerq))924 2454 A
1710 V
(07144)210 648 A
(caller_ptr->p_callerq)882 2034 A
2958(=)S
(sender_ptr->p_sendlink;)966 3042 A
1800 V
(07145)210 648 A
(else)168 1698 A
1890 V
(07146)210 648 A
(previous_ptr->p_sendlink)1008 2034 A
3084(=)S
(sender_ptr->p_sendlink;)966 3168 A
1980 V
(07147)210 648 A
1698(if)S
(((sender_ptr->p_flags)882 1824 A
2748(&=)S
(304SENDING))378 2874 A
3294(==)S
3420(0))S
2070 V
(07148)210 648 A
(ready(sender_ptr);)756 2034 A
3042(/*)S
(deblock)294 3168 A
(sender)252 3504 A
3798(*/)S
2160 V
(07149)210 648 A
(return(OK);)462 1698 A
2250 V
(07150)210 648 A
1362(})S
2340 V
(07151)210 648 A
1194(})S
2430 V
(07152)210 648 A
2520 V
(07153)210 648 A
1194(/*)S
(Check)210 1320 A
(for)126 1572 A
(blocked)294 1740 A
(interrupt.)420 2076 A
2538(*/)S
2610 V
(07154)210 648 A
1194(if)S
((caller_ptr->p_int_blocked)1092 1320 A
2454(&&)S
(isrxhardware(src)))756 2580 A
3378({)S
2700 V
(07155)210 648 A
(m_ptr->m_source)630 1362 A
2034(=)S
(HARDWARE;)378 2118 A
2790 V
(07156)210 648 A
(m_ptr->m_type)546 1362 A
1950(=)S
(HARD_INT;)378 2034 A
2880 V
(07157)210 648 A
(caller_ptr->p_int_blocked)1050 1362 A
2454(=)S
(FALSE;)252 2538 A
2970 V
(07158)210 648 A
(return(OK);)462 1362 A
3060 V
(07159)210 648 A
1194(})S
3150 V
(07160)210 648 A
1110(})S
3240 V
(07161)210 648 A
3330 V
(07162)210 648 A
1110(/*)S
1236(No)S
(suitable)336 1362 A
(message)294 1740 A
2076(is)S
(available.)420 2202 A
(Block)210 2706 A
(the)126 2958 A
(process)294 3126 A
(trying)252 3462 A
3756(to)S
(receive.)336 3882 A
4260(*/)S
3420 V
(07163)210 648 A
(caller_ptr->p_getfrom)882 1110 A
2034(=)S
(src;)168 2118 A
3510 V
(07164)210 648 A
(caller_ptr->p_messbuf)882 1110 A
2034(=)S
(m_ptr;)252 2118 A
3600 V
(07165)210 648 A
1110(if)S
((caller_ptr->p_flags)840 1236 A
2118(==)S
2244(0))S
(unready(caller_ptr);)840 2370 A
3690 V
(07166)210 648 A
(caller_ptr->p_flags)798 1110 A
1950(|=)S
(RECEIVING;)420 2076 A
3780 V
(07167)210 648 A
3870 V
(07168)210 648 A
1110(/*)S
1236(If)S
1362(MM)S
(has)126 1488 A
(just)168 1656 A
(blocked)294 1866 A
(and)126 2202 A
(there)210 2370 A
(are)126 2622 A
(kernel)252 2790 A
(signals)294 3084 A
(pending,)336 3420 A
(now)126 3798 A
3966(is)S
(the)126 4092 A
3960 V
(07169)210 648 A
1152(*)S
(time)168 1236 A
1446(to)S
(tell)168 1572 A
1782(MM)S
(about)210 1908 A
(them,)210 2160 A
(since)210 2412 A
2664(it)S
(will)168 2790 A
3000(be)S
(able)168 3126 A
3336(to)S
(accept)252 3462 A
(the)126 3756 A
(message.)336 3924 A
4050 V
(07170)210 648 A
1152(*/)S
4140 V
(07171)210 648 A
1110(if)S
((sig_procs)420 1236 A
1698(>)S
1782(0)S
1866(&&)S
(proc_number(caller_ptr))966 1992 A
3000(==)S
(MM_PROC_NR)420 3126 A
3588(&&)S
(src)126 3714 A
3882(==)S
(ANY))168 4008 A
4230 V
(07172)210 648 A
(inform();)378 1362 A
4320 V
(07173)210 648 A
(return(OK);)462 1110 A
4410 V
(07174)210 648 A
1026(})S
4590 V
(07176)210 648 A
(/*===========================================================================*)3276 1026 A
4680 V
(07177)210 648 A
1068(*)S
(pick_proc)378 2370 A
4260(*)S
4770 V
(07178)210 648 A
(*===========================================================================*/)3276 1068 A
4860 V
(07179)210 648 A
(PRIVATE)294 1026 A
(void)168 1362 A
(pick_proc())462 1572 A
4950 V
(07180)210 648 A
1026({)S
5040 V
(07181)210 648 A
1026(/*)S
(Decide)252 1152 A
(who)126 1446 A
1614(to)S
(run)126 1740 A
(now.)168 1908 A
2160(A)S
(new)126 2244 A
(process)294 2412 A
2748(is)S
(selected)336 2874 A
3252(by)S
(setting)294 3378 A
('proc_ptr'.)462 3714 A
5130 V
(07182)210 648 A
1068(*)S
(When)168 1152 A
1362(a)S
(fresh)210 1446 A
(user)168 1698 A
((or)126 1908 A
(idle))210 2076 A
(process)294 2328 A
2664(is)S
(selected,)378 2790 A
(record)252 3210 A
3504(it)S
3630(in)S
('bill_ptr',)462 3756 A
5220 V
(07183)210 648 A
1068(*)S
1152(so)S
(the)126 1278 A
(clock)210 1446 A
(task)168 1698 A
(can)126 1908 A
(tell)168 2076 A
(who)126 2286 A
2454(to)S
(bill)168 2580 A
(for)126 2790 A
(system)252 2958 A
(time.)210 3252 A
5310 V
(07184)210 648 A
1068(*/)S
5400 V
(07185)210 648 A
5490 V
(07186)210 648 A
(register)336 1110 A
(struct)252 1488 A
(proc)168 1782 A
(*rp;)168 1992 A
2370(/*)S
(process)294 2496 A
2832(to)S
(run)126 2958 A
3126(*/)S
5580 V
(07187)210 648 A
5670 V
(07188)210 648 A
1110(if)S
1236(()S
((rp)126 1320 A
1488(=)S
(rdy_head[TASK_Q]))714 1572 A
2328(!=)S
(NIL_PROC))378 2454 A
2874({)S
5760 V
(07189)210 648 A
(proc_ptr)336 1362 A
1740(=)S
(rp;)126 1824 A
5850 V
(07190)210 648 A
(return;)294 1362 A
5940 V
(07191)210 648 A
1110(})S
6030 V
(07192)210 648 A
1110(if)S
1236(()S
((rp)126 1320 A
1488(=)S
(rdy_head[SERVER_Q]))798 1572 A
2412(!=)S
(NIL_PROC))378 2538 A
2958({)S
6120 V
(07193)210 648 A
(proc_ptr)336 1362 A
1740(=)S
(rp;)126 1824 A
6210 V
(07194)210 648 A
(return;)294 1362 A
8418 V
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630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
2049(File:)S
2282(src/kernel/proc.c)S
12 B
4308(87)S
900 V
7 LST
(07195)210 648 A
1110(})S
990 V
(07196)210 648 A
1110(if)S
1236(()S
((rp)126 1320 A
1488(=)S
(rdy_head[USER_Q]))714 1572 A
2328(!=)S
(NIL_PROC))378 2454 A
2874({)S
1080 V
(07197)210 648 A
(proc_ptr)336 1362 A
1740(=)S
(rp;)126 1824 A
1170 V
(07198)210 648 A
(bill_ptr)336 1362 A
1740(=)S
(rp;)126 1824 A
1260 V
(07199)210 648 A
(return;)294 1362 A
1350 V
(07200)210 648 A
1110(})S
1440 V
(07201)210 648 A
1110(/*)S
1236(No)S
(one)126 1362 A
1530(is)S
(ready.)252 1656 A
(Run)126 1992 A
(the)126 2160 A
(idle)168 2328 A
(task.)210 2538 A
(The)126 2832 A
(idle)168 3000 A
(task)168 3210 A
(might)210 3420 A
3672(be)S
(made)168 3798 A
4008(an)S
1530 V
(07202)210 648 A
1152(*)S
(always-ready)504 1236 A
(user)168 1782 A
(task)168 1992 A
2202(to)S
(avoid)210 2328 A
(this)168 2580 A
(special)294 2790 A
(case.)210 3126 A
1620 V
(07203)210 648 A
1152(*/)S
1710 V
(07204)210 648 A
(bill_ptr)336 1110 A
1488(=)S
(proc_ptr)336 1572 A
1950(=)S
(proc_addr(IDLE);)672 2034 A
1800 V
(07205)210 648 A
1026(})S
1980 V
(07207)210 648 A
(/*===========================================================================*)3276 1026 A
2070 V
(07208)210 648 A
1068(*)S
(ready)210 2370 A
4260(*)S
2160 V
(07209)210 648 A
(*===========================================================================*/)3276 1068 A
2250 V
(07210)210 648 A
(PRIVATE)294 1026 A
(void)168 1362 A
(ready(rp))378 1572 A
2340 V
(07211)210 648 A
(register)336 1026 A
(struct)252 1404 A
(proc)168 1698 A
(*rp;)168 1908 A
2370(/*)S
(this)168 2496 A
(process)294 2706 A
3042(is)S
(now)126 3168 A
(runnable)336 3336 A
3714(*/)S
2430 V
(07212)210 648 A
1026({)S
2520 V
(07213)210 648 A
1026(/*)S
(Add)126 1152 A
('rp')168 1320 A
1530(to)S
(the)126 1656 A
(end)126 1824 A
1992(of)S
(one)126 2118 A
2286(of)S
(the)126 2412 A
(queues)252 2580 A
2874(of)S
(runnable)336 3000 A
(processes.)420 3378 A
(Three)210 3840 A
2610 V
(07214)210 648 A
1068(*)S
(queues)252 1152 A
(are)126 1446 A
(maintained:)462 1614 A
2700 V
(07215)210 648 A
1068(*)S
(TASK_Q)252 1236 A
1614(-)S
((highest)336 1698 A
(priority))378 2076 A
(for)126 2496 A
(runnable)336 2664 A
(tasks)210 3042 A
2790 V
(07216)210 648 A
1068(*)S
(SERVER_Q)336 1236 A
1614(-)S
((middle)294 1698 A
(priority))378 2034 A
(for)126 2454 A
2622(MM)S
(and)126 2748 A
2916(FS)S
(only)168 3042 A
2880 V
(07217)210 648 A
1068(*)S
(USER_Q)252 1236 A
1614(-)S
((lowest)294 1698 A
(priority))378 2034 A
(for)126 2454 A
(user)168 2622 A
(processes)378 2832 A
2970 V
(07218)210 648 A
1068(*/)S
3060 V
(07219)210 648 A
3150 V
(07220)210 648 A
1110(if)S
((istaskp(rp)))546 1236 A
1824({)S
3240 V
(07221)210 648 A
1362(if)S
((rdy_head[TASK_Q])714 1488 A
2244(!=)S
(NIL_PROC))378 2370 A
3330 V
(07222)210 648 A
1698(/*)S
(Add)126 1824 A
1992(to)S
(tail)168 2118 A
2328(of)S
(nonempty)336 2454 A
(queue.)252 2832 A
3126(*/)S
3420 V
(07223)210 648 A
(rdy_tail[TASK_Q]->p_nextready)1218 1698 A
2958(=)S
(rp;)126 3042 A
3510 V
(07224)210 648 A
(else)168 1362 A
1572({)S
3600 V
(07225)210 648 A
(proc_ptr)336 1698 A
2076(=)S
2706(/*)S
(run)126 2832 A
(fresh)210 3000 A
(task)168 3252 A
(next)168 3462 A
3672(*/)S
3690 V
(07226)210 648 A
(rdy_head[TASK_Q])672 1698 A
2412(=)S
(rp;)126 2496 A
2706(/*)S
(add)126 2832 A
3000(to)S
(empty)210 3126 A
(queue)210 3378 A
3630(*/)S
3780 V
(07227)210 648 A
1362(})S
3870 V
(07228)210 648 A
(rdy_tail[TASK_Q])672 1362 A
2076(=)S
(rp;)126 2160 A
3960 V
(07229)210 648 A
(rp->p_nextready)630 1362 A
2034(=)S
(NIL_PROC;)378 2118 A
2706(/*)S
(new)126 2832 A
(entry)210 3000 A
(has)126 3252 A
3420(no)S
(successor)378 3546 A
3966(*/)S
4050 V
(07230)210 648 A
(return;)294 1362 A
4140 V
(07231)210 648 A
1110(})S
4230 V
(07232)210 648 A
1110(if)S
((!isuserp(rp)))588 1236 A
1866({)S
2370(/*)S
(others)252 2496 A
(are)126 2790 A
(similar)294 2958 A
3294(*/)S
4320 V
(07233)210 648 A
1362(if)S
((rdy_head[SERVER_Q])798 1488 A
2328(!=)S
(NIL_PROC))378 2454 A
4410 V
(07234)210 648 A
(rdy_tail[SERVER_Q]->p_nextready)1302 1698 A
3042(=)S
(rp;)126 3126 A
4500 V
(07235)210 648 A
(else)168 1362 A
4590 V
(07236)210 648 A
(rdy_head[SERVER_Q])756 1698 A
2496(=)S
(rp;)126 2580 A
4680 V
(07237)210 648 A
(rdy_tail[SERVER_Q])756 1362 A
2160(=)S
(rp;)126 2244 A
4770 V
(07238)210 648 A
(rp->p_nextready)630 1362 A
2034(=)S
(NIL_PROC;)378 2118 A
4860 V
(07239)210 648 A
(return;)294 1362 A
4950 V
(07240)210 648 A
1110(})S
5040 V
(07241)210 648 A
1110(if)S
((rdy_head[USER_Q])714 1236 A
1992(==)S
(NIL_PROC))378 2118 A
5130 V
(07242)210 648 A
(rdy_tail[USER_Q])672 1362 A
2076(=)S
(rp;)126 2160 A
5220 V
(07243)210 648 A
(rp->p_nextready)630 1110 A
1782(=)S
(rdy_head[USER_Q];)714 1866 A
5310 V
(07244)210 648 A
(rdy_head[USER_Q])672 1110 A
1824(=)S
(rp;)126 1908 A
5400 V
(07245)210 648 A
1026(/*)S
5490 V
(07246)210 648 A
1110(if)S
((rdy_head[USER_Q])714 1236 A
1992(!=)S
(NIL_PROC))378 2118 A
5580 V
(07247)210 648 A
(rdy_tail[USER_Q]->p_nextready)1218 1362 A
2622(=)S
(rp;)126 2706 A
5670 V
(07248)210 648 A
(else)168 1110 A
5760 V
(07249)210 648 A
(rdy_head[USER_Q])672 1362 A
2076(=)S
(rp;)126 2160 A
5850 V
(07250)210 648 A
(rdy_tail[USER_Q])672 1110 A
1824(=)S
(rp;)126 1908 A
5940 V
(07251)210 648 A
(rp->p_nextready)630 1110 A
1782(=)S
(NIL_PROC;)378 1866 A
6030 V
(07252)210 648 A
1026(*/)S
6120 V
(07253)210 648 A
1026(})S
8418 V
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12 B
648(88)S
11 R
2049(File:)S
2282(src/kernel/proc.c)S
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
900 V
7 LST
(07255)210 648 A
(/*===========================================================================*)3276 1026 A
990 V
(07256)210 648 A
1068(*)S
(unready)294 2370 A
4260(*)S
1080 V
(07257)210 648 A
(*===========================================================================*/)3276 1068 A
1170 V
(07258)210 648 A
(PRIVATE)294 1026 A
(void)168 1362 A
(unready(rp))462 1572 A
1260 V
(07259)210 648 A
(register)336 1026 A
(struct)252 1404 A
(proc)168 1698 A
(*rp;)168 1908 A
2370(/*)S
(this)168 2496 A
(process)294 2706 A
3042(is)S
3168(no)S
(longer)252 3294 A
(runnable)336 3588 A
3966(*/)S
1350 V
(07260)210 648 A
1026({)S
1440 V
(07261)210 648 A
1026(/*)S
1152(A)S
(process)294 1236 A
(has)126 1572 A
(blocked.)336 1740 A
2118(*/)S
1530 V
(07262)210 648 A
1620 V
(07263)210 648 A
(register)336 1110 A
(struct)252 1488 A
(proc)168 1782 A
(*xp;)168 1992 A
1710 V
(07264)210 648 A
(register)336 1110 A
(struct)252 1488 A
(proc)168 1782 A
(**qtail;)336 1992 A
2412(/*)S
(TASK_Q,)294 2538 A
(SERVER_Q,)378 2874 A
3294(or)S
(USER_Q)252 3420 A
(rdy_tail)336 3714 A
4092(*/)S
1800 V
(07265)210 648 A
1890 V
(07266)210 648 A
1110(if)S
((istaskp(rp)))546 1236 A
1824({)S
1980 V
(07267)210 648 A
1362(/*)S
(task)168 1488 A
(stack)210 1698 A
(still)210 1950 A
(ok?)126 2202 A
2370(*/)S
2070 V
(07268)210 648 A
1362(if)S
((*rp->p_stguard)630 1488 A
2160(!=)S
(STACK_GUARD))504 2286 A
2160 V
(07269)210 648 A
(panic("stack)504 1698 A
(overrun)294 2244 A
2580(by)S
(task",)252 2706 A
(proc_number(rp));)714 3000 A
2250 V
(07270)210 648 A
2340 V
(07271)210 648 A
1362(if)S
1488(()S
((xp)126 1572 A
1740(=)S
(rdy_head[TASK_Q]))714 1824 A
2580(==)S
(NIL_PROC))378 2706 A
(return;)294 3126 A
2430 V
(07272)210 648 A
1362(if)S
((xp)126 1488 A
1656(==)S
(rp))126 1782 A
1950({)S
2520 V
(07273)210 648 A
1698(/*)S
(Remove)252 1824 A
(head)168 2118 A
2328(of)S
(queue)210 2454 A
2706(*/)S
2610 V
(07274)210 648 A
(rdy_head[TASK_Q])672 1698 A
2412(=)S
(xp->p_nextready;)672 2496 A
2700 V
(07275)210 648 A
1698(if)S
((rp)126 1824 A
1992(==)S
(proc_ptr))378 2118 A
(pick_proc();)504 2538 A
2790 V
(07276)210 648 A
(return;)294 1698 A
2880 V
(07277)210 648 A
1362(})S
2970 V
(07278)210 648 A
(qtail)210 1362 A
1614(=)S
(&rdy_tail[TASK_Q];)756 1698 A
3060 V
(07279)210 648 A
1110(})S
3150 V
(07280)210 648 A
(else)168 1110 A
1320(if)S
((!isuserp(rp)))588 1446 A
2076({)S
3240 V
(07281)210 648 A
1362(if)S
1488(()S
((xp)126 1572 A
1740(=)S
(rdy_head[SERVER_Q]))798 1824 A
2664(==)S
(NIL_PROC))378 2790 A
(return;)294 3210 A
3330 V
(07282)210 648 A
1362(if)S
((xp)126 1488 A
1656(==)S
(rp))126 1782 A
1950({)S
3420 V
(07283)210 648 A
(rdy_head[SERVER_Q])756 1698 A
2496(=)S
(xp->p_nextready;)672 2580 A
3510 V
(07284)210 648 A
(pick_proc();)504 1698 A
3600 V
(07285)210 648 A
(return;)294 1698 A
3690 V
(07286)210 648 A
1362(})S
3780 V
(07287)210 648 A
(qtail)210 1362 A
1614(=)S
(&rdy_tail[SERVER_Q];)840 1698 A
3870 V
(07288)210 648 A
1110(})S
(else)168 1194 A
3960 V
(07289)210 648 A
1110({)S
4050 V
(07290)210 648 A
1362(if)S
1488(()S
((xp)126 1572 A
1740(=)S
(rdy_head[USER_Q]))714 1824 A
2580(==)S
(NIL_PROC))378 2706 A
(return;)294 3126 A
4140 V
(07291)210 648 A
1362(if)S
((xp)126 1488 A
1656(==)S
(rp))126 1782 A
1950({)S
4230 V
(07292)210 648 A
(rdy_head[USER_Q])672 1698 A
2412(=)S
(xp->p_nextready;)672 2496 A
4320 V
(07293)210 648 A
(pick_proc();)504 1698 A
4410 V
(07294)210 648 A
(return;)294 1698 A
4500 V
(07295)210 648 A
1362(})S
4590 V
(07296)210 648 A
(qtail)210 1362 A
1614(=)S
(&rdy_tail[USER_Q];)756 1698 A
4680 V
(07297)210 648 A
1110(})S
4770 V
(07298)210 648 A
4860 V
(07299)210 648 A
1110(/*)S
(Search)252 1236 A
(body)168 1530 A
1740(of)S
(queue.)252 1866 A
2202(A)S
(process)294 2286 A
(can)126 2622 A
2790(be)S
(made)168 2916 A
(unready)294 3126 A
(even)168 3462 A
3672(if)S
3798(it)S
3924(is)S
4950 V
(07300)210 648 A
1152(*)S
(not)126 1236 A
(running)294 1404 A
1740(by)S
(being)210 1866 A
(sent)168 2118 A
2328(a)S
(signal)252 2412 A
(that)168 2706 A
(kills)210 2916 A
(it.)126 3168 A
5040 V
(07301)210 648 A
1152(*/)S
5130 V
(07302)210 648 A
(while)210 1110 A
((xp->p_nextready)672 1362 A
2076(!=)S
(rp))126 2202 A
5220 V
(07303)210 648 A
1362(if)S
1488(()S
((xp)126 1572 A
1740(=)S
(xp->p_nextready))672 1824 A
2538(==)S
(NIL_PROC))378 2664 A
(return;)294 3084 A
5310 V
(07304)210 648 A
(xp->p_nextready)630 1110 A
1782(=)S
(xp->p_nextready->p_nextready;)1218 1866 A
5400 V
(07305)210 648 A
1110(if)S
((*qtail)294 1236 A
1572(==)S
(rp))126 1698 A
(*qtail)252 1866 A
2160(=)S
(xp;)126 2244 A
5490 V
(07306)210 648 A
1026(})S
5670 V
(07308)210 648 A
(/*===========================================================================*)3276 1026 A
5760 V
(07309)210 648 A
1068(*)S
(sched)210 2370 A
4260(*)S
5850 V
(07310)210 648 A
(*===========================================================================*/)3276 1068 A
5940 V
(07311)210 648 A
(PRIVATE)294 1026 A
(void)168 1362 A
(sched())294 1572 A
6030 V
(07312)210 648 A
1026({)S
6120 V
(07313)210 648 A
1026(/*)S
(The)126 1152 A
(current)294 1320 A
(process)294 1656 A
(has)126 1992 A
(run)126 2160 A
(too)126 2328 A
(long.)210 2496 A
2790(If)S
(another)294 2916 A
(low)126 3252 A
(priority)336 3420 A
((user))252 3798 A
6210 V
(07314)210 648 A
1068(*)S
(process)294 1152 A
1488(is)S
(runnable,)378 1614 A
(put)126 2034 A
(the)126 2202 A
(current)294 2370 A
(process)294 2706 A
3042(on)S
(the)126 3168 A
(end)126 3336 A
3504(of)S
(the)126 3630 A
(user)168 3798 A
(queue,)252 4008 A
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10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
2049(File:)S
2282(src/kernel/proc.c)S
12 B
4308(89)S
900 V
7 LST
(07315)210 648 A
1068(*)S
(possibly)336 1152 A
(promoting)378 1530 A
(another)294 1950 A
(user)168 2286 A
2496(to)S
(head)168 2622 A
2832(of)S
(the)126 2958 A
(queue.)252 3126 A
990 V
(07316)210 648 A
1068(*/)S
1080 V
(07317)210 648 A
1170 V
(07318)210 648 A
1110(if)S
((rdy_head[USER_Q])714 1236 A
1992(==)S
(NIL_PROC))378 2118 A
(return;)294 2538 A
1260 V
(07319)210 648 A
1350 V
(07320)210 648 A
1110(/*)S
(One)126 1236 A
1404(or)S
(more)168 1530 A
(user)168 1740 A
(processes)378 1950 A
(queued.)294 2370 A
2706(*/)S
1440 V
(07321)210 648 A
(rdy_tail[USER_Q]->p_nextready)1218 1110 A
2370(=)S
(rdy_head[USER_Q];)714 2454 A
1530 V
(07322)210 648 A
(rdy_tail[USER_Q])672 1110 A
1824(=)S
(rdy_head[USER_Q];)714 1908 A
1620 V
(07323)210 648 A
(rdy_head[USER_Q])672 1110 A
1824(=)S
(rdy_head[USER_Q]->p_nextready;)1260 1908 A
1710 V
(07324)210 648 A
(rdy_tail[USER_Q]->p_nextready)1218 1110 A
2370(=)S
(NIL_PROC;)378 2454 A
1800 V
(07325)210 648 A
(pick_proc();)504 1110 A
1890 V
(07326)210 648 A
1026(})S
2070 V
(07328)210 648 A
(/*==========================================================================*)3234 1026 A
2160 V
(07329)210 648 A
1068(*)S
(lock_mini_send)588 2370 A
4218(*)S
2250 V
(07330)210 648 A
(*==========================================================================*/)3234 1068 A
2340 V
(07331)210 648 A
(PUBLIC)252 1026 A
(int)126 1320 A
(lock_mini_send(caller_ptr,)1092 1488 A
(dest,)210 2622 A
(m_ptr))252 2874 A
2430 V
(07332)210 648 A
(struct)252 1026 A
(proc)168 1320 A
(*caller_ptr;)504 1530 A
2370(/*)S
(who)126 2496 A
2664(is)S
(trying)252 2790 A
3084(to)S
(send)168 3210 A
3420(a)S
(message?)336 3504 A
3882(*/)S
2520 V
(07333)210 648 A
(int)126 1026 A
(dest;)210 1194 A
2370(/*)S
2496(to)S
(whom)168 2622 A
2832(is)S
(message)294 2958 A
(being)210 3294 A
(sent?)210 3546 A
3798(*/)S
2610 V
(07334)210 648 A
(message)294 1026 A
(*m_ptr;)294 1362 A
2370(/*)S
(pointer)294 2496 A
2832(to)S
(message)294 2958 A
(buffer)252 3294 A
3588(*/)S
2700 V
(07335)210 648 A
1026({)S
2790 V
(07336)210 648 A
1026(/*)S
(Safe)168 1152 A
(gateway)294 1362 A
1698(to)S
(mini_send())462 1824 A
(for)126 2328 A
(tasks.)252 2496 A
2790(*/)S
2880 V
(07337)210 648 A
2970 V
(07338)210 648 A
(int)126 1110 A
(result;)294 1278 A
3060 V
(07339)210 648 A
3150 V
(07340)210 648 A
(switching)378 1110 A
1530(=)S
(TRUE;)210 1614 A
3240 V
(07341)210 648 A
(result)252 1110 A
1404(=)S
(mini_send(caller_ptr,)882 1488 A
(dest,)210 2412 A
(m_ptr);)294 2664 A
3330 V
(07342)210 648 A
(switching)378 1110 A
1530(=)S
(FALSE;)252 1614 A
3420 V
(07343)210 648 A
(return(result);)630 1110 A
3510 V
(07344)210 648 A
1026(})S
3690 V
(07346)210 648 A
(/*==========================================================================*)3234 1026 A
3780 V
(07347)210 648 A
1068(*)S
(lock_pick_proc)588 2370 A
4218(*)S
3870 V
(07348)210 648 A
(*==========================================================================*/)3234 1068 A
3960 V
(07349)210 648 A
(PUBLIC)252 1026 A
(void)168 1320 A
(lock_pick_proc())672 1530 A
4050 V
(07350)210 648 A
1026({)S
4140 V
(07351)210 648 A
1026(/*)S
(Safe)168 1152 A
(gateway)294 1362 A
1698(to)S
(pick_proc())462 1824 A
(for)126 2328 A
(tasks.)252 2496 A
2790(*/)S
4230 V
(07352)210 648 A
4320 V
(07353)210 648 A
(switching)378 1110 A
1530(=)S
(TRUE;)210 1614 A
4410 V
(07354)210 648 A
(pick_proc();)504 1110 A
4500 V
(07355)210 648 A
(switching)378 1110 A
1530(=)S
(FALSE;)252 1614 A
4590 V
(07356)210 648 A
1026(})S
4770 V
(07358)210 648 A
(/*==========================================================================*)3234 1026 A
4860 V
(07359)210 648 A
1068(*)S
(lock_ready)420 2370 A
4218(*)S
4950 V
(07360)210 648 A
(*==========================================================================*/)3234 1068 A
5040 V
(07361)210 648 A
(PUBLIC)252 1026 A
(void)168 1320 A
(lock_ready(rp))588 1530 A
5130 V
(07362)210 648 A
(struct)252 1026 A
(proc)168 1320 A
(*rp;)168 1530 A
2370(/*)S
(this)168 2496 A
(process)294 2706 A
3042(is)S
(now)126 3168 A
(runnable)336 3336 A
3714(*/)S
5220 V
(07363)210 648 A
1026({)S
5310 V
(07364)210 648 A
1026(/*)S
(Safe)168 1152 A
(gateway)294 1362 A
1698(to)S
(ready())294 1824 A
(for)126 2160 A
(tasks.)252 2328 A
2622(*/)S
5400 V
(07365)210 648 A
5490 V
(07366)210 648 A
(switching)378 1110 A
1530(=)S
(TRUE;)210 1614 A
5580 V
(07367)210 648 A
(ready(rp);)420 1110 A
5670 V
(07368)210 648 A
(switching)378 1110 A
1530(=)S
(FALSE;)252 1614 A
5760 V
(07369)210 648 A
1026(})S
6030 V
(07372)210 648 A
(/*==========================================================================*)3234 1026 A
6120 V
(07373)210 648 A
1068(*)S
(lock_unready)504 2370 A
4218(*)S
6210 V
(07374)210 648 A
(*==========================================================================*/)3234 1068 A
8418 V
EP
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/slant 0 def
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630 V
12 B
648(90)S
11 R
2049(File:)S
2282(src/kernel/proc.c)S
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
900 V
7 LST
(07375)210 648 A
(PUBLIC)252 1026 A
(void)168 1320 A
(lock_unready(rp))672 1530 A
990 V
(07376)210 648 A
(struct)252 1026 A
(proc)168 1320 A
(*rp;)168 1530 A
2370(/*)S
(this)168 2496 A
(process)294 2706 A
3042(is)S
3168(no)S
(longer)252 3294 A
(runnable)336 3588 A
3966(*/)S
1080 V
(07377)210 648 A
1026({)S
1170 V
(07378)210 648 A
1026(/*)S
(Safe)168 1152 A
(gateway)294 1362 A
1698(to)S
(unready())378 1824 A
(for)126 2244 A
(tasks.)252 2412 A
2706(*/)S
1260 V
(07379)210 648 A
1350 V
(07380)210 648 A
(switching)378 1110 A
1530(=)S
(TRUE;)210 1614 A
1440 V
(07381)210 648 A
(unready(rp);)504 1110 A
1530 V
(07382)210 648 A
(switching)378 1110 A
1530(=)S
(FALSE;)252 1614 A
1620 V
(07383)210 648 A
1026(})S
1800 V
(07385)210 648 A
(/*==========================================================================*)3234 1026 A
1890 V
(07386)210 648 A
1068(*)S
(lock_sched)420 2370 A
4218(*)S
1980 V
(07387)210 648 A
(*==========================================================================*/)3234 1068 A
2070 V
(07388)210 648 A
(PUBLIC)252 1026 A
(void)168 1320 A
(lock_sched())504 1530 A
2160 V
(07389)210 648 A
1026({)S
2250 V
(07390)210 648 A
1026(/*)S
(Safe)168 1152 A
(gateway)294 1362 A
1698(to)S
(sched())294 1824 A
(for)126 2160 A
(tasks.)252 2328 A
2622(*/)S
2340 V
(07391)210 648 A
2430 V
(07392)210 648 A
(switching)378 1110 A
1530(=)S
(TRUE;)210 1614 A
2520 V
(07393)210 648 A
(sched();)336 1110 A
2610 V
(07394)210 648 A
(switching)378 1110 A
1530(=)S
(FALSE;)252 1614 A
2700 V
(07395)210 648 A
1026(})S
2880 V
(07397)210 648 A
(/*==========================================================================*)3234 1026 A
2970 V
(07398)210 648 A
1068(*)S
(unhold)252 2370 A
4218(*)S
3060 V
(07399)210 648 A
(*==========================================================================*/)3234 1068 A
3150 V
(07400)210 648 A
(PUBLIC)252 1026 A
(void)168 1320 A
(unhold())336 1530 A
3240 V
(07401)210 648 A
1026({)S
3330 V
(07402)210 648 A
1026(/*)S
(Flush)210 1152 A
(any)126 1404 A
(held-up)294 1572 A
(interrupts.)462 1908 A
(k_reenter)378 2454 A
(must)168 2874 A
3084(be)S
3210(0.)S
(held_head)378 3378 A
(must)168 3798 A
(not)126 4008 A
3420 V
(07403)210 648 A
1068(*)S
1152(be)S
(NIL_PROC.)378 1278 A
(Interrupts)420 1740 A
(must)168 2202 A
2412(be)S
(disabled.)378 2538 A
(They)168 3000 A
(will)168 3210 A
3420(be)S
(enabled)294 3546 A
(but)126 3882 A
(will)168 4050 A
3510 V
(07404)210 648 A
1068(*)S
1152(be)S
(disabled)336 1278 A
(when)168 1656 A
(this)168 1866 A
(returns.)336 2076 A
3600 V
(07405)210 648 A
1068(*/)S
3690 V
(07406)210 648 A
3780 V
(07407)210 648 A
(register)336 1110 A
(struct)252 1488 A
(proc)168 1782 A
(*rp;)168 1992 A
2370(/*)S
(current)294 2496 A
(head)168 2832 A
3042(of)S
(held)168 3168 A
(queue)210 3378 A
3630(*/)S
3870 V
(07408)210 648 A
3960 V
(07409)210 648 A
1110(if)S
((switching))462 1236 A
(return;)294 1740 A
4050 V
(07410)210 648 A
1110(rp)S
1236(=)S
(held_head;)420 1320 A
4140 V
(07411)210 648 A
1110(do)S
1236({)S
4230 V
(07412)210 648 A
1362(if)S
1488(()S
((held_head)420 1572 A
2034(=)S
(rp->p_nextheld))630 2118 A
2790(==)S
(NIL_PROC))378 2916 A
(held_tail)378 3336 A
3756(=)S
(NIL_PROC;)378 3840 A
4320 V
(07413)210 648 A
(rp->p_int_held)588 1362 A
1992(=)S
(FALSE;)252 2076 A
4410 V
(07414)210 648 A
(unlock();)378 1362 A
2370(/*)S
(reduce)252 2496 A
(latency;)336 2790 A
(held)168 3168 A
(queue)210 3378 A
(may)126 3630 A
(change!)294 3798 A
4134(*/)S
4500 V
(07415)210 648 A
(interrupt(proc_number(rp));)1134 1362 A
4590 V
(07416)210 648 A
(lock();)294 1362 A
2370(/*)S
(protect)294 2496 A
(the)126 2832 A
(held)168 3000 A
(queue)210 3210 A
(again)210 3462 A
3714(*/)S
4680 V
(07417)210 648 A
1110(})S
4770 V
(07418)210 648 A
(while)210 1110 A
1362(()S
((rp)126 1446 A
1614(=)S
(held_head))420 1698 A
2160(!=)S
(NIL_PROC);)420 2286 A
4860 V
(07419)210 648 A
1026(})S
8418 V
EP
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/slant 0 def
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630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
1931(File:)S
2164(src/kernel/exception.c)S
12 B
4308(91)S
990 V
7 LST
(++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++)3528 648 A
1080 V
(src/kernel/exception.c)924 2034 A
1170 V
(++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++)3528 648 A
1350 V
(07500)210 648 A
1026(/*)S
(This)168 1152 A
(file)168 1362 A
(contains)336 1572 A
1950(a)S
(simple)252 2034 A
(exception)378 2328 A
(handler.)336 2748 A
(Exceptions)420 3168 A
3630(in)S
(user)168 3756 A
1440 V
(07501)210 648 A
1068(*)S
(processes)378 1152 A
(are)126 1572 A
(converted)378 1740 A
2160(to)S
(signals.)336 2286 A
(Exceptions)420 2706 A
3168(in)S
(the)126 3294 A
(kernel,)294 3462 A
3798(MM)S
(and)126 3924 A
1530 V
(07502)210 648 A
1068(*)S
1152(FS)S
(cause)210 1278 A
1530(a)S
(panic.)252 1614 A
1620 V
(07503)210 648 A
1068(*/)S
1710 V
(07504)210 648 A
1800 V
(07505)210 648 A
(#include)336 1026 A
("kernel.h")420 1404 A
1890 V
(07506)210 648 A
(#include)336 1026 A
(<signal.h>)420 1404 A
1980 V
(07507)210 648 A
(#include)336 1026 A
("proc.h")336 1404 A
2070 V
(07508)210 648 A
2160 V
(07509)210 648 A
(/*==========================================================================*)3234 1026 A
2250 V
(07510)210 648 A
1068(*)S
(exception)378 2370 A
4218(*)S
2340 V
(07511)210 648 A
(*==========================================================================*/)3234 1068 A
2430 V
(07512)210 648 A
(PUBLIC)252 1026 A
(void)168 1320 A
(exception(vec_nr))714 1530 A
2520 V
(07513)210 648 A
(unsigned)336 1026 A
(vec_nr;)294 1404 A
2610 V
(07514)210 648 A
1026({)S
2700 V
(07515)210 648 A
1026(/*)S
1152(An)S
(exception)378 1278 A
1698(or)S
(unexpected)420 1824 A
(interrupt)378 2286 A
(has)126 2706 A
(occurred.)378 2874 A
3294(*/)S
2790 V
(07516)210 648 A
2880 V
(07517)210 648 A
(struct)252 1110 A
(ex_s)168 1404 A
1614({)S
2970 V
(07518)210 648 A
(char)168 1362 A
(*msg;)210 1572 A
3060 V
(07519)210 648 A
(int)126 1362 A
(signum;)294 1530 A
3150 V
(07520)210 648 A
(int)126 1362 A
(minprocessor;)546 1530 A
3240 V
(07521)210 648 A
1110(};)S
3330 V
(07522)210 648 A
(static)252 1110 A
(struct)252 1404 A
(ex_s)168 1698 A
(ex_data[])378 1908 A
2328(=)S
2412({)S
3420 V
(07523)210 648 A
("Divide)294 1362 A
(error",)294 1698 A
(SIGFPE,)294 2034 A
(86,)126 2370 A
3510 V
(07524)210 648 A
("Debug)252 1362 A
(exception",)462 1656 A
(SIGTRAP,)336 2160 A
(86,)126 2538 A
3600 V
(07525)210 648 A
("Nonmaskable)504 1362 A
(interrupt",)462 1908 A
(SIGBUS,)294 2412 A
(86,)126 2748 A
3690 V
(07526)210 648 A
("Breakpoint",)546 1362 A
(SIGEMT,)294 1950 A
(86,)126 2286 A
3780 V
(07527)210 648 A
("Overflow",)462 1362 A
(SIGFPE,)294 1866 A
(86,)126 2202 A
3870 V
(07528)210 648 A
("Bounds)294 1362 A
(check",)294 1698 A
(SIGFPE,)294 2034 A
(186,)168 2370 A
3960 V
(07529)210 648 A
("Invalid)336 1362 A
(opcode",)336 1740 A
(SIGILL,)294 2118 A
(186,)168 2454 A
4050 V
(07530)210 648 A
("Coprocessor)504 1362 A
(not)126 1908 A
(available",)462 2076 A
(SIGFPE,)294 2580 A
(186,)168 2916 A
4140 V
(07531)210 648 A
("Double)294 1362 A
(fault",)294 1698 A
(SIGBUS,)294 2034 A
(286,)168 2370 A
4230 V
(07532)210 648 A
("Copressor)420 1362 A
(segment)294 1824 A
(overrun",)378 2160 A
(SIGSEGV,)336 2580 A
(286,)168 2958 A
4320 V
(07533)210 648 A
("Invalid)336 1362 A
(TSS",)210 1740 A
(SIGSEGV,)336 1992 A
(286,)168 2370 A
4410 V
(07534)210 648 A
("Segment)336 1362 A
(not)126 1740 A
(present",)378 1908 A
(SIGSEGV,)336 2328 A
(286,)168 2706 A
4500 V
(07535)210 648 A
("Stack)252 1362 A
(exception",)462 1656 A
(SIGSEGV,)336 2160 A
(286,)168 2538 A
3042(/*)S
(STACK_FAULT)462 3168 A
(already)294 3672 A
(used)168 4008 A
4218(*/)S
4590 V
(07536)210 648 A
("General)336 1362 A
(protection",)504 1740 A
(SIGSEGV,)336 2286 A
(286,)168 2664 A
4680 V
(07537)210 648 A
("Page)210 1362 A
(fault",)294 1614 A
(SIGSEGV,)336 1950 A
(386,)168 2328 A
3042(/*)S
(not)126 3168 A
(close)210 3336 A
3588(*/)S
4770 V
(07538)210 648 A
(NIL_PTR,)336 1362 A
(SIGILL,)294 1740 A
2076(0,)S
3042(/*)S
(probably)336 3168 A
(software)336 3546 A
(trap)168 3924 A
4134(*/)S
4860 V
(07539)210 648 A
("Coprocessor)504 1362 A
(error",)294 1908 A
(SIGFPE,)294 2244 A
(386,)168 2580 A
4950 V
(07540)210 648 A
1110(};)S
5040 V
(07541)210 648 A
(register)336 1110 A
(struct)252 1488 A
(ex_s)168 1782 A
(*ep;)168 1992 A
5130 V
(07542)210 648 A
(struct)252 1110 A
(proc)168 1404 A
(*saved_proc;)504 1614 A
5220 V
(07543)210 648 A
5310 V
(07544)210 648 A
(saved_proc=)462 1110 A
(proc_ptr;)378 1614 A
2034(/*)S
(Save)168 2160 A
(proc_ptr,)378 2370 A
(because)294 2790 A
3126(it)S
(may)126 3252 A
3420(be)S
(changed)294 3546 A
3882(by)S
(debug)210 4008 A
5400 V
(07545)210 648 A
2076(*)S
(statements.)462 2160 A
5490 V
(07546)210 648 A
2076(*/)S
5580 V
(07547)210 648 A
5670 V
(07548)210 648 A
1110(ep)S
1236(=)S
(&ex_data[vec_nr];)714 1320 A
5760 V
(07549)210 648 A
5850 V
(07550)210 648 A
1110(if)S
((vec_nr)294 1236 A
1572(==)S
1698(2))S
1824({)S
2370(/*)S
(spurious)336 2496 A
(NMI)126 2874 A
3042(on)S
(some)168 3168 A
(machines)336 3378 A
3756(*/)S
5940 V
(07551)210 648 A
(printf("got)462 1362 A
(spurious)336 1866 A
(NMI\n");)336 2244 A
6030 V
(07552)210 648 A
(return;)294 1362 A
6120 V
(07553)210 648 A
1110(})S
6210 V
(07554)210 648 A
8418 V
EP
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630 V
12 B
648(92)S
11 R
1931(File:)S
2164(src/kernel/exception.c)S
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
900 V
7 LST
(07555)210 648 A
1110(if)S
((k_reenter)420 1236 A
1698(==)S
1824(0)S
1908(&&)S
(isuserp(saved_proc)))840 2034 A
2916({)S
990 V
(07556)210 648 A
(unlock();)378 1362 A
2370(/*)S
(this)168 2496 A
2706(is)S
(protected)378 2832 A
(like)168 3252 A
(sys_call())420 3462 A
3924(*/)S
1080 V
(07557)210 648 A
(cause_sig(proc_number(saved_proc),)1428 1362 A
(ep->signum);)504 2832 A
1170 V
(07558)210 648 A
(return;)294 1362 A
1260 V
(07559)210 648 A
1110(})S
1350 V
(07560)210 648 A
1440 V
(07561)210 648 A
1110(/*)S
(This)168 1236 A
1446(is)S
(not)126 1572 A
(supposed)336 1740 A
2118(to)S
(happen.)294 2244 A
2580(*/)S
1530 V
(07562)210 648 A
1110(if)S
((ep->msg)336 1236 A
1614(==)S
(NIL_PTR)294 1740 A
2076(||)S
(processor)378 2202 A
2622(<)S
(ep->minprocessor))714 2706 A
1620 V
(07563)210 648 A
(printf("\nIntel-reserved)1008 1362 A
(exception)378 2412 A
(%d\n",)252 2832 A
(vec_nr);)336 3126 A
1710 V
(07564)210 648 A
(else)168 1110 A
1800 V
(07565)210 648 A
(printf("\n%s\n",)672 1362 A
(ep->msg);)378 2076 A
1890 V
(07566)210 648 A
(printf("process)630 1110 A
(number)252 1782 A
(%d,)126 2076 A
2244(pc)S
2370(=)S
(0x%04x:0x%08x\n",)714 2454 A
1980 V
(07567)210 648 A
(proc_number(saved_proc),)1008 1362 A
2070 V
(07568)210 648 A
((unsigned))420 1362 A
(saved_proc->p_reg.cs,)882 1824 A
2160 V
(07569)210 648 A
((unsigned))420 1362 A
(saved_proc->p_reg.pc);)924 1824 A
2250 V
(07570)210 648 A
(panic("exception)672 1110 A
1824(in)S
(system)252 1950 A
(code",)252 2244 A
(NO_NUM);)336 2538 A
2340 V
(07571)210 648 A
1026(})S
2790 V
(++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++)3528 648 A
2880 V
(src/kernel/i8259.c)756 2034 A
2970 V
(++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++)3528 648 A
3150 V
(07600)210 648 A
1026(/*)S
(This)168 1152 A
(file)168 1362 A
(contains)336 1572 A
(routines)336 1950 A
(for)126 2328 A
(initializing)504 2496 A
(the)126 3042 A
(8259)168 3210 A
(interrupt)378 3420 A
(controller:)462 3840 A
3240 V
(07601)210 648 A
1068(*)S
(get_irq_handler:)672 1362 A
(address)294 2076 A
2412(of)S
(handler)294 2538 A
(for)126 2874 A
3042(a)S
(given)210 3126 A
(interrupt)378 3378 A
3330 V
(07602)210 648 A
1068(*)S
(put_irq_handler:)672 1362 A
(register)336 2076 A
2454(an)S
(interrupt)378 2580 A
(handler)294 3000 A
3420 V
(07603)210 648 A
1068(*)S
(intr_init:)420 1362 A
(initialize)420 2034 A
(the)126 2496 A
(interrupt)378 2664 A
(controller(s))546 3084 A
3510 V
(07604)210 648 A
1068(*/)S
3600 V
(07605)210 648 A
3690 V
(07606)210 648 A
(#include)336 1026 A
("kernel.h")420 1404 A
3780 V
(07607)210 648 A
3870 V
(07608)210 648 A
(#define)294 1026 A
(ICW1_AT)294 1362 A
(0x11)168 2034 A
2370(/*)S
(edge)168 2496 A
(triggered,)420 2706 A
(cascade,)336 3168 A
(need)168 3546 A
(ICW4)168 3756 A
3966(*/)S
3960 V
(07609)210 648 A
(#define)294 1026 A
(ICW1_PC)294 1362 A
(0x13)168 2034 A
2370(/*)S
(edge)168 2496 A
(triggered,)420 2706 A
3168(no)S
(cascade,)336 3294 A
(need)168 3672 A
(ICW4)168 3882 A
4092(*/)S
4050 V
(07610)210 648 A
(#define)294 1026 A
(ICW1_PS)294 1362 A
(0x19)168 2034 A
2370(/*)S
(level)210 2496 A
(triggered,)420 2748 A
(cascade,)336 3210 A
(need)168 3588 A
(ICW4)168 3798 A
4008(*/)S
4140 V
(07611)210 648 A
(#define)294 1026 A
(ICW4_AT)294 1362 A
(0x01)168 2034 A
2370(/*)S
(not)126 2496 A
(SFNM,)210 2664 A
(not)126 2916 A
(buffered,)378 3084 A
(normal)252 3504 A
(EOI,)168 3798 A
(8086)168 4008 A
4218(*/)S
4230 V
(07612)210 648 A
(#define)294 1026 A
(ICW4_PC)294 1362 A
(0x09)168 2034 A
2370(/*)S
(not)126 2496 A
(SFNM,)210 2664 A
(buffered,)378 2916 A
(normal)252 3336 A
(EOI,)168 3630 A
(8086)168 3840 A
4050(*/)S
4320 V
(07613)210 648 A
4410 V
(07614)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(int)126 1866 A
(spurious_irq,)546 2034 A
((int)168 2622 A
(irq))168 2832 A
3042();)S
4500 V
(07615)210 648 A
4590 V
(07616)210 648 A
(#define)294 1026 A
(set_vec(nr,)462 1362 A
(addr))210 1866 A
(((void)0))378 2370 A
2790(/*)S
(kluge)210 2916 A
(for)126 3168 A
(protected)378 3336 A
(mode)168 3756 A
3966(*/)S
4680 V
(07617)210 648 A
4770 V
(07618)210 648 A
(/*==========================================================================*)3234 1026 A
4860 V
(07619)210 648 A
1068(*)S
(intr_init)378 2370 A
4218(*)S
4950 V
(07620)210 648 A
(*==========================================================================*/)3234 1068 A
5040 V
(07621)210 648 A
(PUBLIC)252 1026 A
(void)168 1320 A
(intr_init(mine))630 1530 A
5130 V
(07622)210 648 A
(int)126 1026 A
(mine;)210 1194 A
5220 V
(07623)210 648 A
1026({)S
5310 V
(07624)210 648 A
1026(/*)S
(Initialize)420 1152 A
(the)126 1614 A
(8259s,)252 1782 A
(finishing)378 2076 A
(with)168 2496 A
(all)126 2706 A
(interrupts)420 2874 A
(disabled.)378 3336 A
(This)168 3798 A
4008(is)S
5400 V
(07625)210 648 A
1068(*)S
(only)168 1152 A
(done)168 1362 A
1572(in)S
(protected)378 1698 A
(mode,)210 2118 A
2370(in)S
(real)168 2496 A
(mode)168 2706 A
2916(we)S
(don't)210 3042 A
(touch)210 3294 A
(the)126 3546 A
(8259s,)252 3714 A
(but)126 4008 A
5490 V
(07626)210 648 A
1068(*)S
(use)126 1152 A
(the)126 1320 A
(BIOS)168 1488 A
(locations)378 1698 A
(instead.)336 2118 A
(The)126 2538 A
(flag)168 2706 A
("mine")252 2916 A
3210(is)S
(set)126 3336 A
3504(if)S
(the)126 3630 A
(8259s)210 3798 A
(are)126 4050 A
5580 V
(07627)210 648 A
1068(*)S
1152(to)S
1278(be)S
(programmed)420 1404 A
(for)126 1866 A
(Minix,)252 2034 A
2328(or)S
2454(to)S
2580(be)S
(reset)210 2706 A
2958(to)S
(what)168 3084 A
(the)126 3294 A
(BIOS)168 3462 A
(expects.)336 3672 A
5670 V
(07628)210 648 A
1068(*/)S
5760 V
(07629)210 648 A
5850 V
(07630)210 648 A
(int)126 1110 A
1278(i;)S
5940 V
(07631)210 648 A
6030 V
(07632)210 648 A
(lock();)294 1110 A
6120 V
(07633)210 648 A
1110(/*)S
(The)126 1236 A
1404(AT)S
(and)126 1530 A
(newer)210 1698 A
(PS/2)168 1950 A
(have)168 2160 A
(two)126 2370 A
(interrupt)378 2538 A
(controllers,)504 2958 A
(one)126 3504 A
(master,)294 3672 A
6210 V
(07634)210 648 A
1152(*)S
(one)126 1236 A
(slaved)252 1404 A
1698(at)S
(IRQ)126 1824 A
1992(2.)S
((We)126 2160 A
(don't)210 2328 A
(have)168 2580 A
2790(to)S
(deal)168 2916 A
(with)168 3126 A
(the)126 3336 A
3504(PC)S
(that)168 3630 A
8418 V
EP
%%Page: 93 93
BP
/slant 0 def
/height 0 def
630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
2022(File:)S
(src/kernel/i8259.c)799 2255 A
12 B
4308(93)S
900 V
7 LST
(07635)210 648 A
1152(*)S
(has)126 1236 A
(just)168 1404 A
(one)126 1614 A
(controller,)462 1782 A
(because)294 2286 A
2622(it)S
(must)168 2748 A
(run)126 2958 A
3126(in)S
(real)168 3252 A
(mode.))252 3462 A
990 V
(07636)210 648 A
1152(*/)S
1080 V
(07637)210 648 A
(out_byte(INT_CTL,)714 1110 A
(ps_mca)252 1866 A
2160(?)S
(ICW1_PS)294 2244 A
2580(:)S
(ICW1_AT);)378 2664 A
1170 V
(07638)210 648 A
(out_byte(INT_CTLMASK,)882 1110 A
(mine)168 2034 A
2244(?)S
(IRQ0_VECTOR)462 2328 A
2832(:)S
(BIOS_IRQ0_VEC);)630 2916 A
1260 V
(07639)210 648 A
3042(/*)S
(ICW2)168 3168 A
(for)126 3378 A
(master)252 3546 A
3840(*/)S
1350 V
(07640)210 648 A
(out_byte(INT_CTLMASK,)882 1110 A
2034((1)S
2160(<<)S
(CASCADE_IRQ));)588 2286 A
3042(/*)S
(ICW3)168 3168 A
(tells)210 3378 A
(slaves)252 3630 A
3924(*/)S
1440 V
(07641)210 648 A
(out_byte(INT_CTLMASK,)882 1110 A
(ICW4_AT);)378 2034 A
1530 V
(07642)210 648 A
(out_byte(INT_CTLMASK,)882 1110 A
(304(1)126 2034 A
2202(<<)S
(CASCADE_IRQ));)588 2328 A
3042(/*)S
(IRQ)126 3168 A
(0-7)126 3336 A
(mask)168 3504 A
3714(*/)S
1620 V
(07643)210 648 A
(out_byte(INT2_CTL,)756 1110 A
(ps_mca)252 1908 A
2202(?)S
(ICW1_PS)294 2286 A
2622(:)S
(ICW1_AT);)378 2706 A
1710 V
(07644)210 648 A
(out_byte(INT2_CTLMASK,)924 1110 A
(mine)168 2076 A
2286(?)S
(IRQ8_VECTOR)462 2370 A
2874(:)S
(BIOS_IRQ8_VEC);)630 2958 A
1800 V
(07645)210 648 A
3042(/*)S
(ICW2)168 3168 A
(for)126 3378 A
(slave)210 3546 A
3798(*/)S
1890 V
(07646)210 648 A
(out_byte(INT2_CTLMASK,)924 1110 A
(CASCADE_IRQ);)546 2076 A
3042(/*)S
(ICW3)168 3168 A
3378(is)S
(slave)210 3504 A
3756(nr)S
3882(*/)S
1980 V
(07647)210 648 A
(out_byte(INT2_CTLMASK,)924 1110 A
(ICW4_AT);)378 2076 A
2070 V
(07648)210 648 A
(out_byte(INT2_CTLMASK,)924 1110 A
(3040);)168 2076 A
3042(/*)S
(IRQ)126 3168 A
(8-15)168 3336 A
(mask)168 3546 A
3756(*/)S
2160 V
(07649)210 648 A
2250 V
(07650)210 648 A
1110(/*)S
(Initialize)420 1236 A
(the)126 1698 A
(table)210 1866 A
2118(of)S
(interrupt)378 2244 A
(handlers.)378 2664 A
3084(*/)S
2340 V
(07651)210 648 A
(for)126 1110 A
1278((i)S
1404(=)S
1488(0;)S
1614(i)S
1698(<)S
(NR_IRQ_VECTORS;)630 1782 A
(i++))168 2454 A
(irq_table[i])504 2664 A
3210(=)S
(spurious_irq;)546 3294 A
2430 V
(07652)210 648 A
1026(})S
2610 V
(07654)210 648 A
(/*=========================================================================*)3192 1026 A
2700 V
(07655)210 648 A
1068(*)S
(spurious_irq)504 2370 A
4176(*)S
2790 V
(07656)210 648 A
(*=========================================================================*/)3192 1068 A
2880 V
(07657)210 648 A
(PRIVATE)294 1026 A
(int)126 1362 A
(spurious_irq(irq))714 1530 A
2970 V
(07658)210 648 A
(int)126 1026 A
(irq;)168 1194 A
3060 V
(07659)210 648 A
1026({)S
3150 V
(07660)210 648 A
1026(/*)S
(Default)294 1152 A
(interrupt)378 1488 A
(handler.)336 1908 A
2328(It)S
(complains)378 2454 A
2874(a)S
(lot.)168 2958 A
3168(*/)S
3240 V
(07661)210 648 A
3330 V
(07662)210 648 A
1110(if)S
((irq)168 1236 A
1446(<)S
1530(0)S
1614(||)S
(irq)126 1740 A
1908(>=)S
(NR_IRQ_VECTORS))630 2034 A
3420 V
(07663)210 648 A
(panic("invalid)588 1362 A
(call)168 1992 A
2202(to)S
(spurious_irq",)588 2328 A
(irq);)210 2958 A
3510 V
(07664)210 648 A
3600 V
(07665)210 648 A
(printf("spurious)672 1110 A
(irq)126 1824 A
(%d\n",)252 1992 A
(irq);)210 2286 A
3690 V
(07666)210 648 A
3780 V
(07667)210 648 A
(return)252 1110 A
1404(1;)S
1698(/*)S
(Reenable)336 1824 A
(interrupt)378 2202 A
2622(*/)S
3870 V
(07668)210 648 A
1026(})S
4050 V
(07670)210 648 A
(/*=========================================================================*)3192 1026 A
4140 V
(07671)210 648 A
1068(*)S
(put_irq_handler)630 2370 A
4176(*)S
4230 V
(07672)210 648 A
(*=========================================================================*/)3192 1068 A
4320 V
(07673)210 648 A
(PUBLIC)252 1026 A
(void)168 1320 A
(put_irq_handler(irq,)840 1530 A
(handler))336 2412 A
4410 V
(07674)210 648 A
(int)126 1026 A
(irq;)168 1194 A
4500 V
(07675)210 648 A
(irq_handler_t)546 1026 A
(handler;)336 1614 A
4590 V
(07676)210 648 A
1026({)S
4680 V
(07677)210 648 A
1026(/*)S
(Register)336 1152 A
1530(an)S
(interrupt)378 1656 A
(handler.)336 2076 A
2454(*/)S
4770 V
(07678)210 648 A
4860 V
(07679)210 648 A
1110(if)S
((irq)168 1236 A
1446(<)S
1530(0)S
1614(||)S
(irq)126 1740 A
1908(>=)S
(NR_IRQ_VECTORS))630 2034 A
4950 V
(07680)210 648 A
(panic("invalid)588 1362 A
(call)168 1992 A
2202(to)S
(put_irq_handler",)714 2328 A
(irq);)210 3084 A
5040 V
(07681)210 648 A
5130 V
(07682)210 648 A
1110(if)S
((irq_table[irq])630 1236 A
1908(==)S
(handler))336 2034 A
5220 V
(07683)210 648 A
(return;)294 1362 A
2034(/*)S
(extra)210 2160 A
(initialization)588 2412 A
3042(*/)S
5310 V
(07684)210 648 A
5400 V
(07685)210 648 A
1110(if)S
((irq_table[irq])630 1236 A
1908(!=)S
(spurious_irq))546 2034 A
5490 V
(07686)210 648 A
(panic("attempt)588 1362 A
1992(to)S
(register)336 2118 A
(second)252 2496 A
(irq)126 2790 A
(handler)294 2958 A
(for)126 3294 A
(irq",)210 3462 A
(irq);)210 3714 A
5580 V
(07687)210 648 A
5670 V
(07688)210 648 A
(disable_irq(irq);)714 1110 A
5760 V
(07689)210 648 A
1110(if)S
((!protected_mode))714 1236 A
(set_vec(BIOS_VECTOR(irq),)1050 1992 A
(irq_vec[irq]);)588 3084 A
5850 V
(07690)210 648 A
(irq_table[irq]=)630 1110 A
(handler;)336 1782 A
5940 V
(07691)210 648 A
(irq_use)294 1110 A
1446(|=)S
1572(1)S
1656(<<)S
(irq;)168 1782 A
6030 V
(07692)210 648 A
1026(})S
8418 V
EP
%%Page: 94 94
BP
/slant 0 def
/height 0 def
630 V
12 B
648(94)S
11 R
1993(File:)S
2226(src/kernel/protect.c)S
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
990 V
7 LST
(++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++)3528 648 A
1080 V
(src/kernel/protect.c)840 2034 A
1170 V
(++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++)3528 648 A
1350 V
(07700)210 648 A
1026(/*)S
(This)168 1152 A
(file)168 1362 A
(contains)336 1572 A
(code)168 1950 A
(for)126 2160 A
(initialization)588 2328 A
2958(of)S
(protected)378 3084 A
(mode,)210 3504 A
3756(to)S
(initialize)420 3882 A
1440 V
(07701)210 648 A
1068(*)S
(code)168 1152 A
(and)126 1362 A
(data)168 1530 A
(segment)294 1740 A
(descriptors,)504 2076 A
(and)126 2622 A
2790(to)S
(initialize)420 2916 A
(global)252 3378 A
(descriptors)462 3672 A
1530 V
(07702)210 648 A
1068(*)S
(for)126 1152 A
(local)210 1320 A
(descriptors)462 1572 A
2076(in)S
(the)126 2202 A
(process)294 2370 A
(table.)252 2706 A
1620 V
(07703)210 648 A
1068(*/)S
1710 V
(07704)210 648 A
1800 V
(07705)210 648 A
(#include)336 1026 A
("kernel.h")420 1404 A
1890 V
(07706)210 648 A
(#include)336 1026 A
("proc.h")336 1404 A
1980 V
(07707)210 648 A
(#include)336 1026 A
("protect.h")462 1404 A
2070 V
(07708)210 648 A
2160 V
(07709)210 648 A
(#define)294 1026 A
(INT_GATE_TYPE)546 1362 A
((INT_286_GATE)546 2034 A
2622(|)S
(DESC_386_BIT))546 2706 A
2250 V
(07710)210 648 A
(#define)294 1026 A
(TSS_TYPE)336 1362 A
((AVL_286_TSS)504 2034 A
2622(|)S
(DESC_386_BIT))546 2706 A
2340 V
(07711)210 648 A
2430 V
(07712)210 648 A
(struct)252 1026 A
(desctableptr_s)588 1320 A
1950({)S
2520 V
(07713)210 648 A
(char)168 1110 A
(limit[sizeof(u16_t)];)882 1320 A
2610 V
(07714)210 648 A
(char)168 1110 A
(base[sizeof(u32_t)];)840 1320 A
2706(/*)S
(really)252 2832 A
(u24_t)210 3126 A
3378(+)S
(pad)126 3462 A
(for)126 3630 A
(286)126 3798 A
3966(*/)S
2700 V
(07715)210 648 A
1026(};)S
2790 V
(07716)210 648 A
2880 V
(07717)210 648 A
(struct)252 1026 A
(gatedesc_s)420 1320 A
1782({)S
2970 V
(07718)210 648 A
(u16_t)210 1110 A
(offset_low;)462 1362 A
3060 V
(07719)210 648 A
(u16_t)210 1110 A
(selector;)378 1362 A
3150 V
(07720)210 648 A
(u8_t)168 1110 A
(pad;)168 1320 A
2370(/*)S
(|000|XXXXX|)462 2496 A
3000(ig)S
3126(&)S
(trpg,)210 3210 A
(|XXXXXXXX|)420 3462 A
(task)168 3924 A
4134(g)S
4218(*/)S
3240 V
(07721)210 648 A
(u8_t)168 1110 A
(p_dpl_type;)462 1320 A
2370(/*)S
(|P|DL|0|TYPE|)546 2496 A
3084(*/)S
3330 V
(07722)210 648 A
(u16_t)210 1110 A
(offset_high;)504 1362 A
3420 V
(07723)210 648 A
1026(};)S
3510 V
(07724)210 648 A
3600 V
(07725)210 648 A
(struct)252 1026 A
(tss_s)210 1320 A
1572({)S
3690 V
(07726)210 648 A
(reg_t)210 1110 A
(backlink;)378 1362 A
3780 V
(07727)210 648 A
(reg_t)210 1110 A
(sp0;)168 1362 A
2370(/*)S
(stack)210 2496 A
(pointer)294 2748 A
3084(to)S
(use)126 3210 A
(during)252 3378 A
(interrupt)378 3672 A
4092(*/)S
3870 V
(07728)210 648 A
(reg_t)210 1110 A
(ss0;)168 1362 A
2370(/*)S
2580(")S
(segment)294 2748 A
3126(")S
3252(")S
3462(")S
3840(")S
4092(*/)S
3960 V
(07729)210 648 A
(reg_t)210 1110 A
(sp1;)168 1362 A
4050 V
(07730)210 648 A
(reg_t)210 1110 A
(ss1;)168 1362 A
4140 V
(07731)210 648 A
(reg_t)210 1110 A
(sp2;)168 1362 A
4230 V
(07732)210 648 A
(reg_t)210 1110 A
(ss2;)168 1362 A
4320 V
(07733)210 648 A
(reg_t)210 1110 A
(cr3;)168 1362 A
4410 V
(07734)210 648 A
(reg_t)210 1110 A
(ip;)126 1362 A
4500 V
(07735)210 648 A
(reg_t)210 1110 A
(flags;)252 1362 A
4590 V
(07736)210 648 A
(reg_t)210 1110 A
(ax;)126 1362 A
4680 V
(07737)210 648 A
(reg_t)210 1110 A
(cx;)126 1362 A
4770 V
(07738)210 648 A
(reg_t)210 1110 A
(dx;)126 1362 A
4860 V
(07739)210 648 A
(reg_t)210 1110 A
(bx;)126 1362 A
4950 V
(07740)210 648 A
(reg_t)210 1110 A
(sp;)126 1362 A
5040 V
(07741)210 648 A
(reg_t)210 1110 A
(bp;)126 1362 A
5130 V
(07742)210 648 A
(reg_t)210 1110 A
(si;)126 1362 A
5220 V
(07743)210 648 A
(reg_t)210 1110 A
(di;)126 1362 A
5310 V
(07744)210 648 A
(reg_t)210 1110 A
(es;)126 1362 A
5400 V
(07745)210 648 A
(reg_t)210 1110 A
(cs;)126 1362 A
5490 V
(07746)210 648 A
(reg_t)210 1110 A
(ss;)126 1362 A
5580 V
(07747)210 648 A
(reg_t)210 1110 A
(ds;)126 1362 A
5670 V
(07748)210 648 A
(reg_t)210 1110 A
(fs;)126 1362 A
5760 V
(07749)210 648 A
(reg_t)210 1110 A
(gs;)126 1362 A
5850 V
(07750)210 648 A
(reg_t)210 1110 A
(ldt;)168 1362 A
5940 V
(07751)210 648 A
(u16_t)210 1110 A
(trap;)210 1362 A
6030 V
(07752)210 648 A
(u16_t)210 1110 A
(iobase;)294 1362 A
6120 V
(07753)210 648 A
1026(};)S
6210 V
(07754)210 648 A
8418 V
EP
%%Page: 95 95
BP
/slant 0 def
/height 0 def
630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
1993(File:)S
2226(src/kernel/protect.c)S
12 B
4308(95)S
900 V
7 LST
(07755)210 648 A
(PUBLIC)252 1026 A
(struct)252 1320 A
(segdesc_s)378 1614 A
(gdt[GDT_SIZE];)588 2034 A
990 V
(07756)210 648 A
(PRIVATE)294 1026 A
(struct)252 1362 A
(gatedesc_s)420 1656 A
(idt[IDT_SIZE];)588 2118 A
3042(/*)S
(zero-init)378 3168 A
3588(so)S
(none)168 3714 A
(present)294 3924 A
4260(*/)S
1080 V
(07757)210 648 A
(PUBLIC)252 1026 A
(struct)252 1320 A
(tss_s)210 1614 A
(tss;)168 1866 A
2370(/*)S
(zero)168 2496 A
(init)168 2706 A
2916(*/)S
1170 V
(07758)210 648 A
1260 V
(07759)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(int_gate,)378 2076 A
((unsigned)378 2496 A
(vec_nr,)294 2916 A
(phys_bytes)420 3252 A
(base,)210 3714 A
1350 V
(07760)210 648 A
(unsigned)336 1698 A
(dpl_type))378 2076 A
2496();)S
1440 V
(07761)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(sdesc,)252 2076 A
((struct)294 2370 A
(segdesc_s)378 2706 A
(*segdp,)294 3126 A
(phys_bytes)420 3462 A
(base,)210 3924 A
1530 V
(07762)210 648 A
(phys_bytes)420 1698 A
(size))210 2160 A
2412();)S
1620 V
(07763)210 648 A
1710 V
(07764)210 648 A
(/*=========================================================================*)3192 1026 A
1800 V
(07765)210 648 A
1068(*)S
(prot_init)378 2370 A
4176(*)S
1890 V
(07766)210 648 A
(*=========================================================================*/)3192 1068 A
1980 V
(07767)210 648 A
(PUBLIC)252 1026 A
(void)168 1320 A
(prot_init())462 1530 A
2070 V
(07768)210 648 A
1026({)S
2160 V
(07769)210 648 A
1026(/*)S
(Set)126 1152 A
1320(up)S
(tables)252 1446 A
(for)126 1740 A
(protected)378 1908 A
(mode.)210 2328 A
2250 V
(07770)210 648 A
1068(*)S
(All)126 1152 A
(GDT)126 1320 A
(slots)210 1488 A
(are)126 1740 A
(allocated)378 1908 A
2328(at)S
(compile)294 2454 A
(time.)210 2790 A
2340 V
(07771)210 648 A
1068(*/)S
2430 V
(07772)210 648 A
2520 V
(07773)210 648 A
(phys_bytes)420 1110 A
(code_bytes;)462 1572 A
2610 V
(07774)210 648 A
(phys_bytes)420 1110 A
(data_bytes;)462 1572 A
2700 V
(07775)210 648 A
(struct)252 1110 A
(gate_table_s)504 1404 A
(*gtp;)210 1950 A
2790 V
(07776)210 648 A
(struct)252 1110 A
(desctableptr_s)588 1404 A
(*dtp;)210 2034 A
2880 V
(07777)210 648 A
(unsigned)336 1110 A
(ldt_selector;)546 1488 A
2970 V
(07778)210 648 A
(register)336 1110 A
(struct)252 1488 A
(proc)168 1782 A
(*rp;)168 1992 A
3060 V
(07779)210 648 A
3150 V
(07780)210 648 A
(static)252 1110 A
(struct)252 1404 A
(gate_table_s)504 1698 A
2244({)S
3240 V
(07781)210 648 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
((*gate),)336 2076 A
((void))252 2454 A
2748();)S
3330 V
(07782)210 648 A
(unsigned)336 1362 A
(char)168 1740 A
(vec_nr;)294 1950 A
3420 V
(07783)210 648 A
(unsigned)336 1362 A
(char)168 1740 A
(privilege;)420 1950 A
3510 V
(07784)210 648 A
1110(})S
3600 V
(07785)210 648 A
(gate_table[])504 1110 A
1656(=)S
1740({)S
3690 V
(07786)210 648 A
(divide_error,)546 1362 A
(DIVIDE_VECTOR,)588 1950 A
(INTR_PRIVILEGE,)630 2580 A
3780 V
(07787)210 648 A
(single_step_exception,)924 1362 A
(DEBUG_VECTOR,)546 2328 A
(INTR_PRIVILEGE,)630 2916 A
3870 V
(07788)210 648 A
(nmi,)168 1362 A
(NMI_VECTOR,)462 1572 A
(INTR_PRIVILEGE,)630 2076 A
3960 V
(07789)210 648 A
(breakpoint_exception,)882 1362 A
(BREAKPOINT_VECTOR,)756 2286 A
(USER_PRIVILEGE,)630 3084 A
4050 V
(07790)210 648 A
(overflow,)378 1362 A
(OVERFLOW_VECTOR,)672 1782 A
(USER_PRIVILEGE,)630 2496 A
4140 V
(07791)210 648 A
(bounds_check,)546 1362 A
(BOUNDS_VECTOR,)588 1950 A
(INTR_PRIVILEGE,)630 2580 A
4230 V
(07792)210 648 A
(inval_opcode,)546 1362 A
(INVAL_OP_VECTOR,)672 1950 A
(INTR_PRIVILEGE,)630 2664 A
4320 V
(07793)210 648 A
(copr_not_available,)798 1362 A
(COPROC_NOT_VECTOR,)756 2202 A
(INTR_PRIVILEGE,)630 3000 A
4410 V
(07794)210 648 A
(double_fault,)546 1362 A
(DOUBLE_FAULT_VECTOR,)840 1950 A
(INTR_PRIVILEGE,)630 2832 A
4500 V
(07795)210 648 A
(copr_seg_overrun,)714 1362 A
(COPROC_SEG_VECTOR,)756 2118 A
(INTR_PRIVILEGE,)630 2916 A
4590 V
(07796)210 648 A
(inval_tss,)420 1362 A
(INVAL_TSS_VECTOR,)714 1824 A
(INTR_PRIVILEGE,)630 2580 A
4680 V
(07797)210 648 A
(segment_not_present,)840 1362 A
(SEG_NOT_VECTOR,)630 2244 A
(INTR_PRIVILEGE,)630 2916 A
4770 V
(07798)210 648 A
(stack_exception,)672 1362 A
(STACK_FAULT_VECTOR,)798 2076 A
(INTR_PRIVILEGE,)630 2916 A
4860 V
(07799)210 648 A
(general_protection,)798 1362 A
(PROTECTION_VECTOR,)756 2202 A
(INTR_PRIVILEGE,)630 3000 A
4950 V
(07800)210 648 A
(page_fault,)462 1362 A
(PAGE_FAULT_VECTOR,)756 1866 A
(INTR_PRIVILEGE,)630 2664 A
5040 V
(07801)210 648 A
(copr_error,)462 1362 A
(COPROC_ERR_VECTOR,)756 1866 A
(INTR_PRIVILEGE,)630 2664 A
5130 V
(07802)210 648 A
1362({)S
(hwint00,)336 1446 A
(VECTOR()294 1824 A
(0),)126 2160 A
(INTR_PRIVILEGE)588 2328 A
2958(},)S
5220 V
(07803)210 648 A
1362({)S
(hwint01,)336 1446 A
(VECTOR()294 1824 A
(1),)126 2160 A
(INTR_PRIVILEGE)588 2328 A
2958(},)S
5310 V
(07804)210 648 A
1362({)S
(hwint02,)336 1446 A
(VECTOR()294 1824 A
(2),)126 2160 A
(INTR_PRIVILEGE)588 2328 A
2958(},)S
5400 V
(07805)210 648 A
1362({)S
(hwint03,)336 1446 A
(VECTOR()294 1824 A
(3),)126 2160 A
(INTR_PRIVILEGE)588 2328 A
2958(},)S
5490 V
(07806)210 648 A
1362({)S
(hwint04,)336 1446 A
(VECTOR()294 1824 A
(4),)126 2160 A
(INTR_PRIVILEGE)588 2328 A
2958(},)S
5580 V
(07807)210 648 A
1362({)S
(hwint05,)336 1446 A
(VECTOR()294 1824 A
(5),)126 2160 A
(INTR_PRIVILEGE)588 2328 A
2958(},)S
5670 V
(07808)210 648 A
1362({)S
(hwint06,)336 1446 A
(VECTOR()294 1824 A
(6),)126 2160 A
(INTR_PRIVILEGE)588 2328 A
2958(},)S
5760 V
(07809)210 648 A
1362({)S
(hwint07,)336 1446 A
(VECTOR()294 1824 A
(7),)126 2160 A
(INTR_PRIVILEGE)588 2328 A
2958(},)S
5850 V
(07810)210 648 A
1362({)S
(hwint08,)336 1446 A
(VECTOR()294 1824 A
(8),)126 2160 A
(INTR_PRIVILEGE)588 2328 A
2958(},)S
5940 V
(07811)210 648 A
1362({)S
(hwint09,)336 1446 A
(VECTOR()294 1824 A
(9),)126 2160 A
(INTR_PRIVILEGE)588 2328 A
2958(},)S
6030 V
(07812)210 648 A
1362({)S
(hwint10,)336 1446 A
(VECTOR(10),)462 1824 A
(INTR_PRIVILEGE)588 2328 A
2958(},)S
6120 V
(07813)210 648 A
1362({)S
(hwint11,)336 1446 A
(VECTOR(11),)462 1824 A
(INTR_PRIVILEGE)588 2328 A
2958(},)S
6210 V
(07814)210 648 A
1362({)S
(hwint12,)336 1446 A
(VECTOR(12),)462 1824 A
(INTR_PRIVILEGE)588 2328 A
2958(},)S
8418 V
EP
%%Page: 96 96
BP
/slant 0 def
/height 0 def
630 V
12 B
648(96)S
11 R
1993(File:)S
2226(src/kernel/protect.c)S
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
900 V
7 LST
(07815)210 648 A
1362({)S
(hwint13,)336 1446 A
(VECTOR(13),)462 1824 A
(INTR_PRIVILEGE)588 2328 A
2958(},)S
990 V
(07816)210 648 A
1362({)S
(hwint14,)336 1446 A
(VECTOR(14),)462 1824 A
(INTR_PRIVILEGE)588 2328 A
2958(},)S
1080 V
(07817)210 648 A
1362({)S
(hwint15,)336 1446 A
(VECTOR(15),)462 1824 A
(INTR_PRIVILEGE)588 2328 A
2958(},)S
1170 V
(07818)210 648 A
1110(};)S
1260 V
(07819)210 648 A
1350 V
(07820)210 648 A
1110(/*)S
(This)168 1236 A
1446(is)S
(called)252 1572 A
(early)210 1866 A
(and)126 2118 A
(can't)210 2286 A
(use)126 2538 A
(tables)252 2706 A
(set)126 3000 A
3168(up)S
3294(by)S
(main().)294 3420 A
3756(*/)S
1440 V
(07821)210 648 A
(data_bytes)420 1110 A
1572(=)S
((phys_bytes))504 1656 A
(sizes[1])336 2202 A
2580(<<)S
(CLICK_SHIFT;)504 2706 A
1530 V
(07822)210 648 A
1110(if)S
((sizes[0])378 1236 A
1656(==)S
1782(0))S
1620 V
(07823)210 648 A
(code_bytes)420 1362 A
1824(=)S
(data_bytes;)462 1908 A
2706(/*)S
(common)252 2832 A
(I&D)126 3126 A
3294(*/)S
1710 V
(07824)210 648 A
(else)168 1110 A
1800 V
(07825)210 648 A
(code_bytes)420 1362 A
1824(=)S
((phys_bytes))504 1908 A
(sizes[0])336 2454 A
2832(<<)S
(CLICK_SHIFT;)504 2958 A
1890 V
(07826)210 648 A
1980 V
(07827)210 648 A
1110(/*)S
(Build)210 1236 A
(gdt)126 1488 A
(and)126 1656 A
(idt)126 1824 A
(pointers)336 1992 A
2370(in)S
(GDT)126 2496 A
(where)210 2664 A
(the)126 2916 A
(BIOS)168 3084 A
(expects)294 3294 A
(them.)210 3630 A
3882(*/)S
2070 V
(07828)210 648 A
(dtp=)168 1110 A
((struct)294 1320 A
(desctableptr_s)588 1656 A
2286(*))S
(&gdt[GDT_INDEX];)672 2412 A
2160 V
(07829)210 648 A
1110(*)S
((u16_t)252 1194 A
1488(*))S
(dtp->limit)420 1614 A
2076(=)S
((sizeof)294 2160 A
(gdt))168 2496 A
2706(-)S
2790(1;)S
2250 V
(07830)210 648 A
1110(*)S
((u32_t)252 1194 A
1488(*))S
(dtp->base)378 1614 A
2034(=)S
(vir2phys(gdt);)588 2118 A
2340 V
(07831)210 648 A
2430 V
(07832)210 648 A
(dtp=)168 1110 A
((struct)294 1320 A
(desctableptr_s)588 1656 A
2286(*))S
(&gdt[IDT_INDEX];)672 2412 A
2520 V
(07833)210 648 A
1110(*)S
((u16_t)252 1194 A
1488(*))S
(dtp->limit)420 1614 A
2076(=)S
((sizeof)294 2160 A
(idt))168 2496 A
2706(-)S
2790(1;)S
2610 V
(07834)210 648 A