ASSEMBLY LISTING OF SEGMENT >spec>install>1115>return_to_ring_0_.alm ASSEMBLED ON: 11/11/89 0920.3 mst Sat OPTIONS USED: -target l68 list symbols ASSEMBLED BY: ALM Version 8.14 March 1989 ASSEMBLER CREATED: 06/09/89 1002.3 mst Fri 1 " *********************************************************** 2 " * * 3 " * Copyright, (C) Honeywell Bull Inc., 1987 * 4 " * * 5 " * Copyright, (C) Honeywell Information Systems Inc., 1982 * 6 " * * 7 " * Copyright (c) 1972 by Massachusetts Institute of * 8 " * Technology and Honeywell Information Systems, Inc. * 9 " * * 10 " *********************************************************** 11 12 " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 13 " 14 " return_to_ring_0_ 15 " 16 " This program is returned to upon a user ring attempt to 17 " return and restart a signalled fault. It merely calls 18 " |0 to force the processor into ring zero. 19 " return_to_ring_0_ is the program returned to upon 20 " returning to a "signaller frame", the frame created by 21 " the signaller in the faulting stack. The signaller has 22 " placed a pointer to this program in the return pointer 23 " in the signaller frame. 24 " 25 " A second entry in this program is used by the signaller to 26 " force the process to execute some uninhibited code in the user 27 " ring so that any (necessary) ring alarm faults may be processed. 28 " This entry merely runs for a few instructions and then 29 " invokes the signal_ procedure through the pointer in the 30 " stack header. 31 32 " The ring brackets on this program should be 0,7,7 33 " 34 " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 35 36 include stack_header 1-1 " BEGIN INCLUDE FILE ... stack_header.incl.alm 3/72 Bill Silver 1-2 " 1-3 " modified 7/76 by M. Weaver for *system links and more system use of areas 1-4 " modified 3/77 by M. Weaver to add rnt_ptr 1-5 " modified 7/77 by S. Webber to add run_unit_depth and assign_linkage_ptr 1-6 " modified 6/83 by J. Ives to add trace_frames and in_trace. 1-7 1-8 " HISTORY COMMENTS: 1-9 " 1) change(86-06-24,DGHowe), approve(86-06-24,MCR7396), 1-10 " audit(86-08-05,Schroth), install(86-11-03,MR12.0-1206): 1-11 " added the heap_header_ptr definition 1-12 " 2) change(86-08-12,Kissel), approve(86-08-12,MCR7473), 1-13 " audit(86-10-10,Fawcett), install(86-11-03,MR12.0-1206): 1-14 " Modified to support control point management. These changes were 1-15 " actually made in February 1985 by G. Palter. 1-16 " 3) change(86-10-22,Fawcett), approve(86-10-22,MCR7473), 1-17 " audit(86-10-22,Farley), install(86-11-03,MR12.0-1206): 1-18 " Remove the old_lot pointer and replace it with cpm_data_ptr. Use the 18 1-19 " bit pad after cur_lot_size for the cpm_enabled. This was done to save 1-20 " some space int the stack header and change the cpd_ptr unal to 1-21 " cpm_data_ptr (ITS pair). 1-22 " END HISTORY COMMENTS 1-23 000004 1-24 equ stack_header.cpm_data_ptr,4 ptr to control point for this stack 000006 1-25 equ stack_header.combined_stat_ptr,6 ptr to separate static area 1-26 000010 1-27 equ stack_header.clr_ptr,8 ptr to area containing linkage sections 000012 1-28 equ stack_header.max_lot_size,10 number of words allowed in lot (DU) 000012 1-29 equ stack_header.main_proc_invoked,10 nonzero if main proc was invoked in run unit (DL) 000012 1-30 equ stack_header.run_unit_depth,10 number of active run units stacked (DL) 000013 1-31 equ stack_header.cur_lot_size,11 DU number of words (entries) in lot 000013 1-32 equ stack_header.cpm_enabled,11 DL non-zero if control point management is enabled 000014 1-33 equ stack_header.system_free_ptr,12 ptr to system storage area 000016 1-34 equ stack_header.user_free_ptr,14 ptr to user storage area 1-35 000020 1-36 equ stack_header.parent_ptr,16 ptr to parent stack or null 000022 1-37 equ stack_header.stack_begin_ptr,18 ptr to first stack frame 000024 1-38 equ stack_header.stack_end_ptr,20 ptr to next useable stack frame 000026 1-39 equ stack_header.lot_ptr,22 ptr to the lot for the current ring 1-40 000030 1-41 equ stack_header.signal_ptr,24 ptr to signal proc for current ring 000032 1-42 equ stack_header.bar_mode_sp,26 value of sp before entering bar mode 000034 1-43 equ stack_header.pl1_operators_ptr,28 ptr: pl1_operators_$operator_table 000036 1-44 equ stack_header.call_op_ptr,30 ptr to standard call operator 1-45 000040 1-46 equ stack_header.push_op_ptr,32 ptr to standard push operator 000042 1-47 equ stack_header.return_op_ptr,34 ptr to standard return operator 000044 1-48 equ stack_header.ret_no_pop_op_ptr,36 ptr: stand. return/ no pop operator 000046 1-49 equ stack_header.entry_op_ptr,38 ptr to standard entry operator 1-50 000050 1-51 equ stack_header.trans_op_tv_ptr,40 ptr to table of translator operator ptrs 000052 1-52 equ stack_header.isot_ptr,42 pointer to ISOT 000054 1-53 equ stack_header.sct_ptr,44 pointer to System Condition Table 000056 1-54 equ stack_header.unwinder_ptr,46 pointer to unwinder for current ring 1-55 000060 1-56 equ stack_header.sys_link_info_ptr,48 ptr to *system link name table 000062 1-57 equ stack_header.rnt_ptr,50 ptr to reference name table 000064 1-58 equ stack_header.ect_ptr,52 ptr to event channel table 000066 1-59 equ stack_header.assign_linkage_ptr,54 ptr to area for hcs_$assign_linkage calls 000070 1-60 equ stack_header.heap_header_ptr,56 ptr to heap header. 000072 1-61 equ stack_header.trace_frames,58 stack of trace_catch_ frames 000073 1-62 equ stach_header.trace_top_ptr,59 trace pointer 000074 1-63 equ stack_header.in_trace,60 trace antirecurse bit 000100 1-64 equ stack_header_end,64 length of stack header 1-65 1-66 1-67 1-68 000000 1-69 equ trace_frames.count,0 number of trace frames on stack 000001 1-70 equ trace_frames.top_ptr,1 packed pointer to top one 1-71 1-72 " The following constant is an offset within the pl1 operators table. 1-73 " It references a transfer vector table. 1-74 000551 1-75 bool tv_offset,551 1-76 1-77 1-78 " The following constants are offsets within this transfer vector table. 1-79 001170 1-80 equ call_offset,tv_offset+271 001171 1-81 equ push_offset,tv_offset+272 001172 1-82 equ return_offset,tv_offset+273 001173 1-83 equ return_no_pop_offset,tv_offset+274 001174 1-84 equ entry_offset,tv_offset+275 1-85 1-86 1-87 " END INCLUDE FILE stack_header.incl.alm 37 " 000000 38 name return_to_ring_0_ 39 000000 40 segdef return_to_ring_0_ 000002 41 segdef restart_fault_ptr 000004 42 segdef return_to_ring_n 43 000000 44 return_to_ring_0_: 000000 0a 000002 7130 20 45 callsp restart_fault_ptr,* call into ring zero 46 000001 aa 000000 0110 03 47 even 000002 48 restart_fault_ptr: 000002 aa 077777 000043 49 its -1,1 This pointer is filled in at system initialization 000003 aa 000001 000000 50 "time to point to |0. 51 000004 52 return_to_ring_n: 000004 aa 000000 0110 00 53 nop 000005 aa 000000 0110 00 54 nop 000006 aa 000000 0110 00 55 nop 000007 aa 3 00000 7131 00 56 callsp bb|0 bb left by signaller... 57 58 end NO LITERALS NAME DEFINITIONS FOR ENTRY POINTS AND SEGDEFS 000010 5a 000003 000000 000011 5a 000052 600000 000012 aa 000000 000000 000013 55 000013 000002 000014 5a 000002 400003 000015 55 000006 000013 000016 aa 021 162 145 164 000017 aa 165 162 156 137 000020 aa 164 157 137 162 000021 aa 151 156 147 137 000022 aa 060 137 000 000 000023 55 000023 000003 000024 0a 000004 400000 000025 55 000016 000003 000026 aa 020 162 145 164 return_to_ring_n 000027 aa 165 162 156 137 000030 aa 164 157 137 162 000031 aa 151 156 147 137 000032 aa 156 000 000 000 000033 55 000033 000013 000034 0a 000002 400000 000035 55 000026 000003 000036 aa 021 162 145 163 restart_fault_ptr 000037 aa 164 141 162 164 000040 aa 137 146 141 165 000041 aa 154 164 137 160 000042 aa 164 162 000 000 000043 55 000043 000023 000044 0a 000000 400000 000045 55 000036 000003 000046 aa 021 162 145 164 return_to_ring_0_ 000047 aa 165 162 156 137 000050 aa 164 157 137 162 000051 aa 151 156 147 137 000052 aa 060 137 000 000 000053 55 000002 000033 000054 6a 000000 400002 000055 55 000046 000003 000056 aa 014 163 171 155 symbol_table 000057 aa 142 157 154 137 000060 aa 164 141 142 154 000061 aa 145 000 000 000 DEFINITIONS HASH TABLE 000062 aa 000000 000015 000063 aa 000000 000000 000064 aa 000000 000000 000065 aa 000000 000000 000066 aa 000000 000000 000067 aa 000000 000000 000070 5a 000023 000000 000071 5a 000033 000000 000072 5a 000043 000000 000073 aa 000000 000000 000074 aa 000000 000000 000075 aa 000000 000000 000076 5a 000013 000000 000077 aa 000000 000000 NO EXTERNAL NAMES NO TRAP POINTER WORDS TYPE PAIR BLOCKS 000100 aa 000001 000000 000101 aa 000000 000000 INTERNAL EXPRESSION WORDS LINKAGE INFORMATION 000000 aa 000000 000000 000001 0a 000010 000000 000002 aa 000000 000000 000003 aa 000000 000000 000004 aa 000000 000000 000005 aa 000000 000000 000006 22 000010 000010 000007 a2 000000 000000 SYMBOL INFORMATION SYMBOL TABLE HEADER 000000 aa 000000 000001 000001 aa 163171 155142 000002 aa 164162 145145 000003 aa 000000 000010 000004 aa 000000 117244 000005 aa 361023 525721 000006 aa 000000 117547 000007 aa 240340 525715 000010 aa 141154 155040 000011 aa 040040 040040 000012 aa 000024 000040 000013 aa 000034 000040 000014 aa 000044 000100 000015 aa 000002 000002 000016 aa 000064 000000 000017 aa 000000 000147 000020 aa 000000 000121 000021 aa 000127 000124 000022 aa 000140 000121 000023 aa 000064 000000 000024 aa 101114 115040 000025 aa 126145 162163 000026 aa 151157 156040 000027 aa 070056 061064 000030 aa 040115 141162 000031 aa 143150 040061 000032 aa 071070 071040 000033 aa 040040 040040 000034 aa 110151 162156 000035 aa 145151 163145 000036 aa 156056 123171 000037 aa 163115 141151 000040 aa 156164 056141 000041 aa 040040 040040 000042 aa 040040 040040 000043 aa 040040 040040 000044 aa 055164 141162 000045 aa 147145 164040 000046 aa 154066 070040 000047 aa 040040 040040 000050 aa 040040 040040 000051 aa 040040 040040 000052 aa 040040 040040 000053 aa 040040 040040 000054 aa 040040 040040 000055 aa 040040 040040 000056 aa 040154 151163 000057 aa 164040 163171 000060 aa 155142 157154 000061 aa 163040 040040 000062 aa 040040 040040 000063 aa 040040 040040 000064 aa 000000 000001 000065 aa 000000 000002 000066 aa 000076 000050 000067 aa 175453 030403 000070 aa 000000 117547 000071 aa 227325 400000 000072 aa 000110 000042 000073 aa 147777 464111 000074 aa 000000 115000 000075 aa 507463 000000 000076 aa 076163 160145 >spec>install>1115>return_to_ring_0_.alm 000077 aa 143076 151156 000100 aa 163164 141154 000101 aa 154076 061061 000102 aa 061065 076162 000103 aa 145164 165162 000104 aa 156137 164157 000105 aa 137162 151156 000106 aa 147137 060137 000107 aa 056141 154155 000110 aa 076154 144144 >ldd>include>stack_header.incl.alm 000111 aa 076151 156143 000112 aa 154165 144145 000113 aa 076163 164141 000114 aa 143153 137150 000115 aa 145141 144145 000116 aa 162056 151156 000117 aa 143154 056141 000120 aa 154155 040040 MULTICS ASSEMBLY CROSS REFERENCE LISTING Value Symbol Source file Line number 1170 call_offset stack_header: 80. 1174 entry_offset stack_header: 84. 1171 push_offset stack_header: 81. 2 restart_fault_ptr return_to_ring_0_: 41, 45, 48. 1173 return_no_pop_offset stack_header: 83. 1172 return_offset stack_header: 82. 0 return_to_ring_0_ return_to_ring_0_: 40, 44. 4 return_to_ring_n return_to_ring_0_: 42, 52. 73 stach_header.trace_top_ptr stack_header: 62. 66 stack_header.assign_linkage_ptr stack_header: 59. 32 stack_header.bar_mode_sp stack_header: 42. 36 stack_header.call_op_ptr stack_header: 44. 10 stack_header.clr_ptr stack_header: 27. 6 stack_header.combined_stat_ptr stack_header: 25. 4 stack_header.cpm_data_ptr stack_header: 24. 13 stack_header.cpm_enabled stack_header: 32. 13 stack_header.cur_lot_size stack_header: 31. 64 stack_header.ect_ptr stack_header: 58. 46 stack_header.entry_op_ptr stack_header: 49. 70 stack_header.heap_header_ptr stack_header: 60. 74 stack_header.in_trace stack_header: 63. 52 stack_header.isot_ptr stack_header: 52. 26 stack_header.lot_ptr stack_header: 39. 12 stack_header.main_proc_invoked stack_header: 29. 12 stack_header.max_lot_size stack_header: 28. 20 stack_header.parent_ptr stack_header: 36. 34 stack_header.pl1_operators_ptr stack_header: 43. 40 stack_header.push_op_ptr stack_header: 46. 42 stack_header.return_op_ptr stack_header: 47. 44 stack_header.ret_no_pop_op_ptr stack_header: 48. 62 stack_header.rnt_ptr stack_header: 57. 12 stack_header.run_unit_depth stack_header: 30. 54 stack_header.sct_ptr stack_header: 53. 30 stack_header.signal_ptr stack_header: 41. 22 stack_header.stack_begin_ptr stack_header: 37. 24 stack_header.stack_end_ptr stack_header: 38. 14 stack_header.system_free_ptr stack_header: 33. 60 stack_header.sys_link_info_ptr stack_header: 56. 72 stack_header.trace_frames stack_header: 61. 50 stack_header.trans_op_tv_ptr stack_header: 51. 56 stack_header.unwinder_ptr stack_header: 54. 16 stack_header.user_free_ptr stack_header: 34. 100 stack_header_end stack_header: 64. 0 trace_frames.count stack_header: 69. 1 trace_frames.top_ptr stack_header: 70. 551 tv_offset stack_header: 75, 80, 81, 82, 83, 84. NO FATAL ERRORS ----------------------------------------------------------- Historical Background This edition of the Multics software materials and documentation is provided and donated to Massachusetts Institute of Technology by Group BULL including BULL HN Information Systems Inc. as a contribution to computer science knowledge. This donation is made also to give evidence of the common contributions of Massachusetts Institute of Technology, Bell Laboratories, General Electric, Honeywell Information Systems Inc., Honeywell BULL Inc., Groupe BULL and BULL HN Information Systems Inc. to the development of this operating system. Multics development was initiated by Massachusetts Institute of Technology Project MAC (1963-1970), renamed the MIT Laboratory for Computer Science and Artificial Intelligence in the mid 1970s, under the leadership of Professor Fernando Jose Corbato. Users consider that Multics provided the best software architecture for managing computer hardware properly and for executing programs. Many subsequent operating systems incorporated Multics principles. Multics was distributed in 1975 to 2000 by Group Bull in Europe , and in the U.S. by Bull HN Information Systems Inc., as successor in interest by change in name only to Honeywell Bull Inc. and Honeywell Information Systems Inc. . ----------------------------------------------------------- Permission to use, copy, modify, and distribute these programs and their documentation for any purpose and without fee is hereby granted,provided that the below copyright notice and historical background appear in all copies and that both the copyright notice and historical background and this permission notice appear in supporting documentation, and that the names of MIT, HIS, BULL or BULL HN not be used in advertising or publicity pertaining to distribution of the programs without specific prior written permission. Copyright 1972 by Massachusetts Institute of Technology and Honeywell Information Systems Inc. Copyright 2006 by BULL HN Information Systems Inc. Copyright 2006 by Bull SAS All Rights Reserved