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Fixed a bug in db_write_text where on exit we would bash 

a PTE in whatever user context happened to be set on
entry.
This commit is contained in:
fredette 2001-04-18 03:19:21 +00:00
parent 2ec4dd8585
commit 68230340aa
1 changed files with 5 additions and 4 deletions
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9
sys/arch/sun2/sun2/db_memrw.c
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@ -1,4 +1,4 @@
/* $NetBSD: db_memrw.c,v 1.1 2001/04/06 15:05:56 fredette Exp $ */
/* $NetBSD: db_memrw.c,v 1.2 2001/04/18 03:19:21 fredette Exp $ */
/*-
* Copyright (c) 1996 The NetBSD Foundation, Inc.
@ -121,6 +121,9 @@ db_write_text(dst, size, data)
pgva = m68k_trunc_page((long)dst);
old_ctx = get_context();
set_context(0);
goto firstpage;
do {
@ -138,8 +141,6 @@ db_write_text(dst, size, data)
set_pte(prevpg, oldpte);
firstpage:
old_ctx = get_context();
set_context(0);
oldpte = get_pte(pgva);
if ((oldpte & PG_VALID) == 0) {
printf(" address %p not a valid page\n", dst);
@ -154,7 +155,6 @@ db_write_text(dst, size, data)
tmppte |= (PG_WRITE | PG_NC);
set_pte(pgva, tmppte);
set_context(old_ctx);
prevpg = pgva;
}
@ -165,6 +165,7 @@ db_write_text(dst, size, data)
/* Restore old PTE for the last page touched. */
set_pte(prevpg, oldpte);
set_context(old_ctx);
}
/*