freebsd-dev/sys/cddl/dev
Kristof Provost effd82ca70 dtrace: fix fbt return probes on RISC-V
Return values are passed in a0, so read it from there. We also pass a1 through
to userspace, as the ABI allows small structs to be returned in registers
a0/a1. While here read the register values directly from the trapframe rather
than rtval, and remove the now unneeded argument from dtrace_invop().

Set fbtp_roffset so that we get the correct return location in arg0.

Reviewed by:	markj
Sponsored by:	Axiado
Differential Revision:	https://reviews.freebsd.org/D26389
2020-09-11 09:15:49 +00:00
..
dtmalloc dtrace: depessimize dtmalloc when dtrace is active 2018-04-24 01:06:20 +00:00
dtrace dtrace: fix fbt return probes on RISC-V 2020-09-11 09:15:49 +00:00
fbt dtrace: fix fbt return probes on RISC-V 2020-09-11 09:15:49 +00:00
profile Merge OpenZFS support in to HEAD. 2020-08-25 02:21:27 +00:00
sdt Merge OpenZFS support in to HEAD. 2020-08-25 02:21:27 +00:00
systrace Merge OpenZFS support in to HEAD. 2020-08-25 02:21:27 +00:00
prototype.c Use C99 initializers for DTrace provider methods. 2017-09-27 17:46:38 +00:00