Author: kib
Date: Mon Jul 15 06:30:57 2013
New Revision: 253352
URL: http://svnweb.freebsd.org/changeset/base/253352
Log:
MFi386: add ddb "show sysregs" command.
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Modified:
head/sys/amd64/amd64/machdep.c
Modified: head/sys/amd64/amd64/machdep.c
==============================================================================
--- head/sys/amd64/amd64/machdep.c Mon Jul 15 06:16:57 2013
(r253351)
+++ head/sys/amd64/amd64/machdep.c Mon Jul 15 06:30:57 2013
(r253352)
@@ -1228,6 +1228,36 @@ DB_SHOW_COMMAND(idt, db_show_idt)
ip++;
}
}
+
+/* Show privileged registers. */
+DB_SHOW_COMMAND(sysregs, db_show_sysregs)
+{
+ struct {
+ uint16_t limit;
+ uint64_t base;
+ } __packed idtr, gdtr;
+ uint16_t ldt, tr;
+
+ __asm __volatile("sidt %0" : "=m" (idtr));
+ db_printf("idtr\t0x%016lx/%04x\n",
+ (u_long)idtr.base, (u_int)idtr.limit);
+ __asm __volatile("sgdt %0" : "=m" (gdtr));
+ db_printf("gdtr\t0x%016lx/%04x\n",
+ (u_long)gdtr.base, (u_int)gdtr.limit);
+ __asm __volatile("sldt %0" : "=r" (ldt));
+ db_printf("ldtr\t0x%04x\n", ldt);
+ __asm __volatile("str %0" : "=r" (tr));
+ db_printf("tr\t0x%04x\n", tr);
+ db_printf("cr0\t0x%016lx\n", rcr0());
+ db_printf("cr2\t0x%016lx\n", rcr2());
+ db_printf("cr3\t0x%016lx\n", rcr3());
+ db_printf("cr4\t0x%016lx\n", rcr4());
+ db_printf("EFER\t%016lx\n", rdmsr(MSR_EFER));
+ db_printf("FEATURES_CTL\t%016lx\n", rdmsr(MSR_IA32_FEATURE_CONTROL));
+ db_printf("DEBUG_CTL\t%016lx\n", rdmsr(MSR_DEBUGCTLMSR));
+ db_printf("PAT\t%016lx\n", rdmsr(MSR_PAT));
+ db_printf("GSBASE\t%016lx\n", rdmsr(MSR_GSBASE));
+}
#endif
void
_______________________________________________
svn-src-all@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
