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authorAlan Stern <stern@rowland.harvard.edu>2007-07-21 17:10:42 +0200
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-21 18:37:10 -0700
commitbb1995d52b05f7e671914454d0ae57bd4170ef47 (patch)
tree3a4924f5d24e71f4884e6598085b557d856777e8 /arch/x86_64
parent44bf4cea43816d43deab73c1c16361e899996eaa (diff)
x86: Make Alt-SysRq-p display the debug register contents
This patch (as921) adds code to the show_regs() routine in i386 and x86_64 to print the contents of the debug registers along with all the others. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/x86_64')
-rw-r--r--arch/x86_64/kernel/process.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86_64/kernel/process.c b/arch/x86_64/kernel/process.c
index 180f4c0fcbc..bbfc957f045 100644
--- a/arch/x86_64/kernel/process.c
+++ b/arch/x86_64/kernel/process.c
@@ -306,6 +306,7 @@ early_param("idle", idle_setup);
void __show_regs(struct pt_regs * regs)
{
unsigned long cr0 = 0L, cr2 = 0L, cr3 = 0L, cr4 = 0L, fs, gs, shadowgs;
+ unsigned long d0, d1, d2, d3, d6, d7;
unsigned int fsindex,gsindex;
unsigned int ds,cs,es;
@@ -350,6 +351,15 @@ void __show_regs(struct pt_regs * regs)
fs,fsindex,gs,gsindex,shadowgs);
printk("CS: %04x DS: %04x ES: %04x CR0: %016lx\n", cs, ds, es, cr0);
printk("CR2: %016lx CR3: %016lx CR4: %016lx\n", cr2, cr3, cr4);
+
+ get_debugreg(d0, 0);
+ get_debugreg(d1, 1);
+ get_debugreg(d2, 2);
+ printk("DR0: %016lx DR1: %016lx DR2: %016lx\n", d0, d1, d2);
+ get_debugreg(d3, 3);
+ get_debugreg(d6, 6);
+ get_debugreg(d7, 7);
+ printk("DR3: %016lx DR6: %016lx DR7: %016lx\n", d3, d6, d7);
}
void show_regs(struct pt_regs *regs)