Module Name: src
Committed By: maxv
Date: Wed Aug 30 15:46:20 UTC 2017
Modified Files:
src/regress/sys/arch/i386/ldt: testldt.c
Log Message:
Don't test call gates, they are not supported anymore.
To generate a diff of this commit:
cvs rdiff -u -r1.16 -r1.17 src/regress/sys/arch/i386/ldt/testldt.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/regress/sys/arch/i386/ldt/testldt.c
diff -u src/regress/sys/arch/i386/ldt/testldt.c:1.16 src/regress/sys/arch/i386/ldt/testldt.c:1.17
--- src/regress/sys/arch/i386/ldt/testldt.c:1.16 Sat Sep 3 08:47:38 2016
+++ src/regress/sys/arch/i386/ldt/testldt.c Wed Aug 30 15:46:19 2017
@@ -1,6 +1,6 @@
-/* $NetBSD: testldt.c,v 1.16 2016/09/03 08:47:38 maxv Exp $ */
+/* $NetBSD: testldt.c,v 1.17 2017/08/30 15:46:19 maxv Exp $ */
-/*-
+/*
* Copyright (c) 1993 The NetBSD Foundation, Inc.
* All rights reserved.
*
@@ -53,15 +53,6 @@ get_fs_byte(const char *addr)
return _v;
}
-static unsigned short
-get_cs(void)
-{
- unsigned short _v;
-
- __asm ("movw %%cs,%0": "=r" (_v));
- return _v;
-}
-
static int
check_desc(int desc)
{
@@ -70,15 +61,6 @@ check_desc(int desc)
return get_fs_byte((char *)0);
}
-static void
-gated_call(void)
-{
- printf("Called from call gate...");
- __asm volatile("movl %ebp,%esp");
- __asm volatile("popl %ebp");
- __asm volatile(".byte 0xcb");
-}
-
static union descriptor *
make_sd(void *basep, unsigned limit, int type, int dpl, int seg32, int inpgs)
{
@@ -99,23 +81,6 @@ make_sd(void *basep, unsigned limit, int
return &d;
}
-static union descriptor *
-make_gd(void *func, unsigned int sel, unsigned stkcpy, int type, int dpl)
-{
- static union descriptor d;
- unsigned long offset = (unsigned long)func;
-
- d.gd.gd_looffset = offset & 0x0000ffff;
- d.gd.gd_selector = sel & 0xffff;
- d.gd.gd_stkcpy = stkcpy & 0x1ff;
- d.gd.gd_type = type & 0x1ff;
- d.gd.gd_dpl = dpl & 0x3;
- d.gd.gd_p = 1;
- d.gd.gd_hioffset = (offset & 0xffff0000) >> 16;
-
- return &d;
-}
-
static const char *
seg_type_name[] = {
"SYSNULL", "SYS286TSS", "SYSLDT", "SYS286BSY",
@@ -206,9 +171,8 @@ main(int argc, char *argv[])
union descriptor ldt[MAX_USER_LDT];
int n, ch;
int num;
- unsigned int cs = get_cs();
unsigned char *data;
- union descriptor *sd, *gd;
+ union descriptor *sd;
unsigned char one = 1, two = 2, val;
struct sigaction segv_act;
int verbose = 0;
@@ -229,10 +193,8 @@ main(int argc, char *argv[])
}
printf("Testing i386_get_ldt\n");
- if ((num = i386_get_ldt(0, ldt, MAX_USER_LDT)) < 0)
- err(2, "get_ldt");
- if (num == 0)
- errx(1, "i386_get_ldt() returned empty initial LDT");
+ if ((num = i386_get_ldt(0, ldt, MAX_USER_LDT)) >= 0)
+ err(2, "get_ldt succeeded");
if (verbose) {
printf("Got %d (initial) LDT entries\n", num);
@@ -275,39 +237,6 @@ main(int argc, char *argv[])
"expected 0x97, got 0x%x", check_desc(num));
/*
- * Test a Call Gate
- */
- printf("Making call gate\n");
- fflush(stdout);
-
- gd = make_gd((void *)gated_call, cs, 0, SDT_SYS386CGT, SEL_UPL);
- if ((num = i386_set_ldt(4095, gd, 1)) < 0)
- err(1, "set_ldt: call gate");
-
- if (verbose) {
- printf("setldt returned: %d\n", num);
- printf("Call gate sel = 0x%x\n", LSEL(num, SEL_UPL));
- }
-
- if ((n = i386_get_ldt(num, ldt, 1)) < 0)
- err(1, "get_ldt");
-
- if (verbose) {
- printf("Entry %d: ", num);
- print_ldt(&ldt[0]);
- }
-
- printf("Testing call gate...");
- fflush(stdout);
- /*
- * Long call to call gate.
- * Only the selector matters; offset is irrelevant.
- */
- __asm volatile("lcall $0x7fff,$0x0");
-
- printf("Gated call returned\n");
-
- /*
* Test multiple sets.
*/
