diff options
Diffstat (limited to 'system/alpha/console/dbmentry.S')
| -rw-r--r-- | system/alpha/console/dbmentry.S | 183 |
1 files changed, 55 insertions, 128 deletions
diff --git a/system/alpha/console/dbmentry.S b/system/alpha/console/dbmentry.S index df7b39e40..38e614585 100644 --- a/system/alpha/console/dbmentry.S +++ b/system/alpha/console/dbmentry.S @@ -1,139 +1,73 @@ /* -Copyright (c) 2003, 2004 -The Regents of The University of Michigan -All Rights Reserved - -This code is part of the M5 simulator, developed by Nathan Binkert, -Erik Hallnor, Steve Raasch, and Steve Reinhardt, with contributions -from Ron Dreslinski, Dave Greene, Lisa Hsu, Ali Saidi, and Andrew -Schultz. - -Permission is granted to use, copy, create derivative works and -redistribute this software and such derivative works for any purpose, -so long as the copyright notice above, this grant of permission, and -the disclaimer below appear in all copies made; and so long as the -name of The University of Michigan is not used in any advertising or -publicity pertaining to the use or distribution of this software -without specific, written prior authorization. - -THIS SOFTWARE IS PROVIDED AS IS, WITHOUT REPRESENTATION FROM THE -UNIVERSITY OF MICHIGAN AS TO ITS FITNESS FOR ANY PURPOSE, AND WITHOUT -WARRANTY BY THE UNIVERSITY OF MICHIGAN OF ANY KIND, EITHER EXPRESS OR -IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF -MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE REGENTS OF -THE UNIVERSITY OF MICHIGAN SHALL NOT BE LIABLE FOR ANY DAMAGES, -INCLUDING DIRECT, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL -DAMAGES, WITH RESPECT TO ANY CLAIM ARISING OUT OF OR IN CONNECTION -WITH THE USE OF THE SOFTWARE, EVEN IF IT HAS BEEN OR IS HEREAFTER -ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. -*/ + * Copyright (c) 2003, 2004 + * The Regents of The University of Michigan + * All Rights Reserved + * + * This code is part of the M5 simulator, developed by Nathan Binkert, + * Erik Hallnor, Steve Raasch, and Steve Reinhardt, with contributions + * from Ron Dreslinski, Dave Greene, Lisa Hsu, Ali Saidi, and Andrew + * Schultz. + * + * Permission is granted to use, copy, create derivative works and + * redistribute this software and such derivative works for any purpose, + * so long as the copyright notice above, this grant of permission, and + * the disclaimer below appear in all copies made; and so long as the + * name of The University of Michigan is not used in any advertising or + * publicity pertaining to the use or distribution of this software + * without specific, written prior authorization. + * + * THIS SOFTWARE IS PROVIDED AS IS, WITHOUT REPRESENTATION FROM THE + * UNIVERSITY OF MICHIGAN AS TO ITS FITNESS FOR ANY PURPOSE, AND WITHOUT + * WARRANTY BY THE UNIVERSITY OF MICHIGAN OF ANY KIND, EITHER EXPRESS OR + * IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE REGENTS OF + * THE UNIVERSITY OF MICHIGAN SHALL NOT BE LIABLE FOR ANY DAMAGES, + * INCLUDING DIRECT, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL + * DAMAGES, WITH RESPECT TO ANY CLAIM ARISING OUT OF OR IN CONNECTION + * WITH THE USE OF THE SOFTWARE, EVEN IF IT HAS BEEN OR IS HEREAFTER + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. + */ /* -Copyright 1993 Hewlett-Packard Development Company, L.P. - -Permission is hereby granted, free of charge, to any person obtaining a copy of -this software and associated documentation files (the "Software"), to deal in -the Software without restriction, including without limitation the rights to -use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies -of the Software, and to permit persons to whom the Software is furnished to do -so, subject to the following conditions: - -The above copyright notice and this permission notice shall be included in all -copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE -SOFTWARE. -*/ - -/* taken from ebfw/rom/dbmentry.s */ - -#define EB164 -/*#ifndef LINT -.data -.asciiz "$Id: dbmentry.s,v 1.1.1.1 1997/10/30 23:27:12 verghese Exp $" -.text -#endif -*/ + * Copyright 1993 Hewlett-Packard Development Company, L.P. + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + /* * Debug Monitor Entry code */ - -#ifndef MAKEDEPEND -#include "ev5_impure.h" -#include "cserve.h" #include "fromHudsonOsf.h" -#endif - -//#include "paldefs.h" -#include "regdefs.h" -#include "eb164.h" -//#include "ledcodes.h" .text /* return address and padding to octaword align */ #define STARTFRM 16 - .globl __start - .ent __start, 0 -__start: + .globl _start + .ent _start, 0 +_start: _entry: br t0, 2f # get the current PC 2: ldgp gp, 0(t0) # init gp - -#ifdef original_xxm - lda a2, CSERVE_K_RD_IMPURE - call_pal PAL_CSERVE_ENTRY - lda v0, CNS_Q_BASE(v0) - - # Add KSEG offset to the impure area - subq zero, 1, t0 - sll t0, 42, t0 - addq t0, v0, v0 - - lda t0, CNS_Q_SIGNATURE(v0) - bic t0, 0x07, t0 # Clear bottom 3 bits to avoid - # allignment errors if the - # impure area is total rubbish - ldq t0, 0x00(t0) - srl t0, 16, t0 # Shift signature into bottom 16 bits. - lda t6, 0xDECB(zero) # Load the expected valid signature. - zap t6, 0xFC, t6 # Clear the upper bits. - cmpeq t0, t6, t0 # Is this a valid signature? - beq t0, 1f # Not valid, don't trust input params. - -/* - * Init the stack at the first 8K boundary - * below the top of memory. - */ - lda t0, CNS_Q_MEM_SIZE(v0) - ldq t0, 0x00(t0) # Load memory size. - subq t0, 1, t0 # Last address in memory - srl t0, 13, t0 # Align to first 8KB boundary - sll t0, 13, sp # below the top of memory. - br zero, 2f - -/* - * If memory size was not passed in via the - * PALcode impure data use the system specific - * MINIMUM_SYSTEM_MEMORY definition. - */ -1: - lda sp, (MINIMUM_SYSTEM_MEMORY&0xffff)(zero) - ldah sp, ((MINIMUM_SYSTEM_MEMORY+0x8000)>>16)(sp) - lda t0, (8*1024)(zero) # Allow for 8KB guard page. - subq sp, t0, sp - -2: - -#endif /* original_xxm */ - - /* * SimOS. Stack pointer is start of a valid phys or KSEG page */ @@ -146,13 +80,6 @@ slave: lda v0,(8*1024)(sp) /* end of page */ sll t0, 42, t0 bis t0, v0, sp -#ifdef original_xxm - # Add KSEG offset to the stack pointer - subq zero, 1, t0 - sll t0, 42, t0 - addq t0, sp, sp -#endif - lda sp, -STARTFRM(sp) # Create a stack frame stq ra, 0(sp) # Place return address on the stack @@ -186,7 +113,7 @@ master: ldgp gp, 0(ra) bsr zero, _exit -.end __start +.end _start |