Date: Mon, 5 Jul 2004 22:05:38 GMT From: Marcel Moolenaar <marcel@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 56546 for review Message-ID: <200407052205.i65M5cPl092332@repoman.freebsd.org>
next in thread | raw e-mail | index | archive | help
http://perforce.freebsd.org/chv.cgi?CH=56546 Change 56546 by marcel@marcel_nfs on 2004/07/05 22:05:37 Implement makectx() on alpha. Tested and working. Affected files ... .. //depot/projects/gdb/sys/alpha/alpha/machdep.c#11 edit Differences ... ==== //depot/projects/gdb/sys/alpha/alpha/machdep.c#11 (text+ko) ==== @@ -1974,6 +1974,29 @@ #endif } +/* + * 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_context[0] = tf->tf_regs[FRAME_S0]; + pcb->pcb_context[1] = tf->tf_regs[FRAME_S1]; + pcb->pcb_context[2] = tf->tf_regs[FRAME_S2]; + pcb->pcb_context[3] = tf->tf_regs[FRAME_S3]; + pcb->pcb_context[4] = tf->tf_regs[FRAME_S4]; + pcb->pcb_context[5] = tf->tf_regs[FRAME_S5]; + pcb->pcb_context[6] = tf->tf_regs[FRAME_S6]; + pcb->pcb_context[7] = tf->tf_regs[FRAME_PC]; + pcb->pcb_context[8] = tf->tf_regs[FRAME_PS]; + pcb->pcb_hw.apcb_ksp = tf->tf_regs[FRAME_SP]; +} + int fill_regs(td, regs) struct thread *td;
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200407052205.i65M5cPl092332>