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File: [cvs.NetBSD.org] / src / sys / arch / sh3 / sh3 / db_memrw.c (download)
Revision 1.1, Mon Sep 13 10:31:28 1999 UTC (24 years, 7 months ago) by itojun
Merge in NetBSD/sh3 from cvs.kame.net repository. Tree structure: - sys/arch/sh3: sh3 generic code As commented, in-chip device drivers are put into sys/arch/sh3/dev. - sys/arch/evbsh3: sh3 evaluation boards (pure sh3 CPU, no fancy external HW) - sys/arch/mmeye: Brains mmEye, www.brains.co.jp MI source code includes couple of #ifdef for sh3-coff support. (sh3 uses coff or elf) Needs some more improvements, especialy in sys/arch/sh3/conf/files.sh3, to compile the tree (due to last minute tree structure change). |
/* $NetBSD: db_memrw.c,v 1.1 1999/09/13 10:31:28 itojun Exp $ */ /* * Mach Operating System * Copyright (c) 1991,1990 Carnegie Mellon University * All Rights Reserved. * * Permission to use, copy, modify and distribute this software and its * documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. * * db_interface.c,v 2.4 1991/02/05 17:11:13 mrt (CMU) */ /* * Routines to read and write memory on behalf of the debugger, used * by DDB and KGDB. */ #include <sys/param.h> #include <sys/proc.h> #include <sys/systm.h> #include <vm/vm.h> #include <machine/db_machdep.h> #include <ddb/db_access.h> /* * Read bytes from kernel address space for debugger. */ void db_read_bytes(addr, size, data) vaddr_t addr; register size_t size; register char *data; { register char *src; src = (char *)addr; while (size-- > 0) *data++ = *src++; } #if !defined(PMAP_NEW) pt_entry_t *pmap_pte __P((pmap_t, vaddr_t)); #endif /* * Write bytes to kernel address space for debugger. */ void db_write_bytes(addr, size, data) vaddr_t addr; register size_t size; register char *data; { register char *dst; register pt_entry_t *ptep0 = 0; pt_entry_t oldmap0 = { 0 }; vaddr_t addr1; register pt_entry_t *ptep1 = 0; pt_entry_t oldmap1 = { 0 }; extern char etext; if (addr >= VM_MIN_KERNEL_ADDRESS && addr < (vaddrt_t)&etext) { ptep0 = pmap_pte(pmap_kernel(), addr); oldmap0 = *ptep0; *(int *)ptep0 |= /* INTEL_PTE_WRITE */ PG_RW; addr1 = sh3_trunc_page(addr + size - 1); if (sh3_trunc_page(addr) != addr1) { /* data crosses a page boundary */ ptep1 = pmap_pte(pmap_kernel(), addr1); oldmap1 = *ptep1; *(int *)ptep1 |= /* INTEL_PTE_WRITE */ PG_RW; } pmap_update(); } dst = (char *)addr; while (size-- > 0) *dst++ = *data++; if (ptep0) { *ptep0 = oldmap0; if (ptep1) *ptep1 = oldmap1; pmap_update(); } }