svn commit: r362851 - head/sys/riscv/riscv

[Kristof Provost]

Author: kp
Date: Wed Jul  1 19:11:02 2020
New Revision: 362851
URL: https://svnweb.freebsd.org/changeset/base/362851

Log:
  riscv: Log missing registers in dump_regs()
  
  If we panic we dump the registers for debugging. This is very useful, but it
  missed several registers (ra, sp, gp and tp).
  
  Log these as well. Especially the return address value is extremely useful.
  
  Sponsored by:	Axiado

Modified:
  head/sys/riscv/riscv/trap.c

Modified: head/sys/riscv/riscv/trap.c
==============================================================================
--- head/sys/riscv/riscv/trap.c	Wed Jul  1 18:10:37 2020	(r362850)
+++ head/sys/riscv/riscv/trap.c	Wed Jul  1 19:11:02 2020	(r362851)
@@ -147,6 +147,11 @@ dump_regs(struct trapframe *frame)
 	for (i = 0; i < n; i++)
 		printf("a[%d] == 0x%016lx\n", i, frame->tf_a[i]);
 
+	printf("ra == 0x%016lx\n", frame->tf_ra);
+	printf("sp == 0x%016lx\n", frame->tf_sp);
+	printf("gp == 0x%016lx\n", frame->tf_gp);
+	printf("tp == 0x%016lx\n", frame->tf_tp);
+
 	printf("sepc == 0x%016lx\n", frame->tf_sepc);
 	printf("sstatus == 0x%016lx\n", frame->tf_sstatus);
 }