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choose ldt positions invidious enough to exercise the 

kernel's ldt reallocate strategy,
now we can reproduce the problem described in
PR port-i386/19724 by Stephen Ma
This commit is contained in:
drochner 2003-08-11 17:19:51 +00:00
parent 6fb41457ab
commit 21fd723e0c
1 changed files with 6 additions and 6 deletions
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12
regress/sys/arch/i386/ldt/testldt.c
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@ -1,4 +1,4 @@
/* $NetBSD: testldt.c,v 1.10 2003/08/11 13:30:16 drochner Exp $ */
/* $NetBSD: testldt.c,v 1.11 2003/08/11 17:19:51 drochner Exp $ */
/*-
* Copyright (c) 1993 The NetBSD Foundation, Inc.
@ -269,8 +269,8 @@ main(int argc, char *argv[])
*data = 0x97;
/* Get the next free LDT and set it to the allocated data. */
sd = make_sd(data, 4096, SDT_MEMRW, SEL_UPL, 0, 0);
if ((num = i386_set_ldt(6, sd, 1)) < 0)
sd = make_sd(data, 2048, SDT_MEMRW, SEL_UPL, 0, 0);
if ((num = i386_set_ldt(1024, sd, 1)) < 0)
err(1, "set_ldt");
if (verbose) printf("setldt returned: %d\n", num);
@ -296,7 +296,7 @@ main(int argc, char *argv[])
fflush(stdout);
gd = make_gd((void *)gated_call, cs, 0, SDT_SYS386CGT, SEL_UPL);
if ((num = i386_set_ldt(5, gd, 1)) < 0)
if ((num = i386_set_ldt(4095, gd, 1)) < 0)
err(1, "set_ldt: call gate");
if (verbose) {
@ -318,7 +318,7 @@ main(int argc, char *argv[])
* Long call to call gate.
* Only the selector matters; offset is irrelevant.
*/
__asm__ __volatile__("lcall $0x2f,$0x0");
__asm__ __volatile__("lcall $0x7fff,$0x0");
printf("Gated call returned\n");
@ -335,7 +335,7 @@ main(int argc, char *argv[])
sd[0] = *make_sd(&one, 1, SDT_MEMRO, SEL_UPL, 1, 0);
sd[1] = *make_sd(&two, 1, SDT_MEMRO, SEL_UPL, 1, 0);
if ((num = i386_set_ldt(6, (union descriptor *)sd, 2)) < 0)
if ((num = i386_set_ldt(8000, (union descriptor *)sd, 2)) < 0)
err(1, "set_ldt");
if (verbose) printf("setldt returned: %d\n", num);