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5f66d5a313
freebsd-dev/sys
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mhorne 5f66d5a313 arm64: remove pcb_pc 
The program counter field in the PCB is written in exactly one place,
makectx(), upon entry to the debugger. For threads other than curthread,
its value will be empty, or bogus. Rather than writing to this field in
more places, it can be removed in favor of using the value in the link
register.

To make this clearer, pcb->pcb_x[30] is renamed to pcb->pcb_lr, similar
to what already exists in struct trapframe. Also, prefer lr to x30 in
assembly, as it better conveys intention.

This improves PC_REGS() for kdb_thread != curthread. It is required for
a functional gdb(4) stub, fixing the output of `info threads`, in
particular.

The space occupied by pcb_pc is retained, for compatibility with kgdb.

Reviewed by:	markj, jhb
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D27720
2021-01-08 14:53:44 -04:00
..
amd64 pccard: Remove wi(4) driver 2021-01-07 20:41:06 -07:00
arm Factor-out hardware-independent part of USB HID support to new module 2021-01-08 02:18:42 +03:00
arm64 arm64: remove pcb_pc 2021-01-08 14:53:44 -04:00
bsm Add aio_writev and aio_readv 2021-01-02 19:57:58 -07:00
cam cam: Remove Giant handling from cam_sim_alloc() 2021-01-03 11:50:31 -05:00
cddl Install dtrace.h and dependencies 2021-01-07 09:26:21 +00:00
compat Regenerate syscall files after reallocation of aio_writev/aio_readv 2021-01-07 19:50:32 -07:00
conf pccard: Remove wi(4) driver 2021-01-07 20:41:06 -07:00
contrib Fix memory leaks in error paths in krping. 2021-01-08 12:35:55 +01:00
crypto armv8crypto: add AES-XTS support 2021-01-07 15:35:20 -04:00
ddb ddb: add ability to print user registers 2021-01-08 14:53:06 -04:00
dev vmd: Clean up resources properly when vmd_attach() fails 2021-01-08 13:32:05 -05:00
dts Brand our DTS with the Linux version it was imported from 2020-10-10 07:18:51 +00:00
fs Fix vnode locking bug in fuse_vnop_copy_file_range 2021-01-03 11:16:20 -07:00
gdb gdb(4): allow bulk write of registers 2020-12-23 14:37:05 -04:00
geom geom(4): make g_newprovider_event() return if G_P_WITHER is set 2020-12-29 14:29:59 +00:00
gnu ARM64: Port FreeBSD to Nvidia Jetson TX1 and Nano. 2020-12-28 14:12:41 +01:00
i386 pccard: Remove wi(4) driver 2021-01-07 20:41:06 -07:00
isa
kern mbuf: enable ext_pgs ("unmapped") mbufs by default 2021-01-08 13:43:30 -05:00
kgssapi State kgssapi dependency on xdr. 2020-09-17 22:29:38 +00:00
libkern libkern/strcasestr.c: Drop xlocale support and connect to build. 2021-01-08 02:18:42 +03:00
mips hid: Import functions and constants required by new subsystem 2021-01-08 02:18:42 +03:00
modules pccard: Remove wi(4) driver 2021-01-07 20:41:06 -07:00
net iflib: ensure that tx interrupts enabled and cleanups 2021-01-07 14:07:35 -08:00
net80211 net80211: fix a typo 2020-11-04 12:07:33 +00:00
netgraph pccard: Remove bt3c(4) driver 2021-01-07 20:40:41 -07:00
netinet igmp: Avoid leaking mbuf when source validation fails 2021-01-08 13:32:04 -05:00
netinet6 Refactor rt_addrmsg() and rt_routemsg(). 2021-01-07 19:38:19 +00:00
netipsec Trigger soft lifetime expiration on sequence number 2020-10-16 11:27:01 +00:00
netpfil pf: Copy kif flags to userspace 2021-01-07 22:26:05 +01:00
netsmb net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
nfs nfs: clean up empty lines in .c and .h files 2020-09-01 21:25:39 +00:00
nfsclient nfs: clean up empty lines in .c and .h files 2020-09-01 21:25:39 +00:00
nfsserver nfs: Mark unused statistics variable as reserved 2020-11-18 04:35:49 +00:00
nlm nlm: clean up empty lines in .c and .h files 2020-09-01 22:14:52 +00:00
ofed Update user access region, UAR, APIs in the core in mlx5core. 2021-01-08 13:33:46 +01:00
opencrypto Remove the cloned file descriptors for /dev/crypto. 2020-11-25 00:10:54 +00:00
powerpc hid: Import functions and constants required by new subsystem 2021-01-08 02:18:42 +03:00
riscv Skip the vm.pmap.kernel_maps sysctl by default. 2020-12-18 20:41:23 +00:00
rpc Add a new "tlscertname" NFS mount option. 2020-12-23 13:42:55 -08:00
security mac: cheaper check for mac_vnode_check_readlink 2021-01-08 13:57:10 +00:00
sys efidev: remove EFIIOC_GET_TABLE ioctl 2021-01-08 10:41:50 -06:00
teken loader: implement framebuffer console 2021-01-02 21:41:36 +02:00
tests Add small tool to invoke kernel test framework tests. 2020-09-02 09:20:40 +00:00
tools sys/tools: Add a tool for generating arm and arm64 kernel images. 2020-12-30 13:22:04 +01:00
ufs ffs: Support O_DSYNC. 2021-01-08 13:15:56 +13:00
vm uma: Avoid unmapping direct-mapped slabs 2021-01-03 11:50:31 -05:00
x86 x86: stop punishing VMs with low priority for TSC timecounter 2020-12-23 12:45:15 +02:00
xdr xdr: clean up empty lines in .c and .h files 2020-09-01 22:13:28 +00:00
xen xen: allow limiting the amount of duplicated pending xenstore watches 2020-12-30 11:18:26 +01:00
Makefile