PERFORCE change 56565 for review
Marcel Moolenaar
marcel at FreeBSD.org
Mon Jul 5 18:53:22 PDT 2004
http://perforce.freebsd.org/chv.cgi?CH=56565
Change 56565 by marcel at marcel_sledge on 2004/07/06 01:52:46
Implement makectx() on amd64. It compiles. I think it'll work,
but I can't test amd64 at all...
Affected files ...
.. //depot/projects/gdb/sys/amd64/amd64/machdep.c#15 edit
Differences ...
==== //depot/projects/gdb/sys/amd64/amd64/machdep.c#15 (text+ko) ====
@@ -1283,6 +1283,27 @@
pcpu->pc_acpi_id = 0xffffffff;
}
+/*
+ * Construct a PCB from a trapframe. This is called from kdb_trap() where
+ * we want to start a backtrace from the function that caused us to enter
+ * the debugger. We have the context in the trapframe, but base the trace
+ * on the PCB. The PCB doesn't have to be perfect, as long as it contains
+ * enough for a backtrace.
+ */
+void
+makectx(struct trapframe *tf, struct pcb *pcb)
+{
+
+ pcb->pcb_r12 = tf->tf_r12;
+ pcb->pcb_r13 = tf->tf_r13;
+ pcb->pcb_r14 = tf->tf_r14;
+ pcb->pcb_r15 = tf->tf_r15;
+ pcb->pcb_rbp = tf->tf_rbp;
+ pcb->pcb_rbx = tf->tf_rbx;
+ pcb->pcb_rip = tf->tf_rip;
+ pcb->pcb_rsp = (ISPL(tf->tf_cs)) ? tf->tf_rsp : (long)(tf + 1) - 8;
+}
+
int
ptrace_set_pc(struct thread *td, unsigned long addr)
{
More information about the p4-projects
mailing list