Date: Tue, 6 Jul 2004 01:53:20 GMT From: Marcel Moolenaar <marcel@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 56565 for review Message-ID: <200407060153.i661rK4E099224@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=56565 Change 56565 by marcel@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) {
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