perf-eh_elf/arch/arm64/util/unwind-libdw.c
Linus Torvalds 16c00db4bb Merge tag 'afs-fixes-20180514' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
Pull AFS fixes from David Howells:
 "Here's a set of patches that fix a number of bugs in the in-kernel AFS
  client, including:

   - Fix directory locking to not use individual page locks for
     directory reading/scanning but rather to use a semaphore on the
     afs_vnode struct as the directory contents must be read in a single
     blob and data from different reads must not be mixed as the entire
     contents may be shuffled about between reads.

   - Fix address list parsing to handle port specifiers correctly.

   - Only give up callback records on a server if we actually talked to
     that server (we might not be able to access a server).

   - Fix some callback handling bugs, including refcounting,
     whole-volume callbacks and when callbacks actually get broken in
     response to a CB.CallBack op.

   - Fix some server/address rotation bugs, including giving up if we
     can't probe a server; giving up if a server says it doesn't have a
     volume, but there are more servers to try.

   - Fix the decoding of fetched statuses to be OpenAFS compatible.

   - Fix the handling of server lookups in Cache Manager ops (such as
     CB.InitCallBackState3) to use a UUID if possible and to handle no
     server being found.

   - Fix a bug in server lookup where not all addresses are compared.

   - Fix the non-encryption of calls that prevents some servers from
     being accessed (this also requires an AF_RXRPC patch that has
     already gone in through the net tree).

  There's also a patch that adds tracepoints to log Cache Manager ops
  that don't find a matching server, either by UUID or by address"

* tag 'afs-fixes-20180514' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
  afs: Fix the non-encryption of calls
  afs: Fix CB.CallBack handling
  afs: Fix whole-volume callback handling
  afs: Fix afs_find_server search loop
  afs: Fix the handling of an unfound server in CM operations
  afs: Add a tracepoint to record callbacks from unlisted servers
  afs: Fix the handling of CB.InitCallBackState3 to find the server by UUID
  afs: Fix VNOVOL handling in address rotation
  afs: Fix AFSFetchStatus decoder to provide OpenAFS compatibility
  afs: Fix server rotation's handling of fileserver probe failure
  afs: Fix refcounting in callback registration
  afs: Fix giving up callbacks on server destruction
  afs: Fix address list parsing
  afs: Fix directory page locking
2018-05-15 10:48:36 -07:00

60 lines
1.5 KiB
C

// SPDX-License-Identifier: GPL-2.0
#include <elfutils/libdwfl.h>
#include "../../util/unwind-libdw.h"
#include "../../util/perf_regs.h"
#include "../../util/event.h"
bool libdw__arch_set_initial_registers(Dwfl_Thread *thread, void *arg)
{
struct unwind_info *ui = arg;
struct regs_dump *user_regs = &ui->sample->user_regs;
Dwarf_Word dwarf_regs[PERF_REG_ARM64_MAX], dwarf_pc;
#define REG(r) ({ \
Dwarf_Word val = 0; \
perf_reg_value(&val, user_regs, PERF_REG_ARM64_##r); \
val; \
})
dwarf_regs[0] = REG(X0);
dwarf_regs[1] = REG(X1);
dwarf_regs[2] = REG(X2);
dwarf_regs[3] = REG(X3);
dwarf_regs[4] = REG(X4);
dwarf_regs[5] = REG(X5);
dwarf_regs[6] = REG(X6);
dwarf_regs[7] = REG(X7);
dwarf_regs[8] = REG(X8);
dwarf_regs[9] = REG(X9);
dwarf_regs[10] = REG(X10);
dwarf_regs[11] = REG(X11);
dwarf_regs[12] = REG(X12);
dwarf_regs[13] = REG(X13);
dwarf_regs[14] = REG(X14);
dwarf_regs[15] = REG(X15);
dwarf_regs[16] = REG(X16);
dwarf_regs[17] = REG(X17);
dwarf_regs[18] = REG(X18);
dwarf_regs[19] = REG(X19);
dwarf_regs[20] = REG(X20);
dwarf_regs[21] = REG(X21);
dwarf_regs[22] = REG(X22);
dwarf_regs[23] = REG(X23);
dwarf_regs[24] = REG(X24);
dwarf_regs[25] = REG(X25);
dwarf_regs[26] = REG(X26);
dwarf_regs[27] = REG(X27);
dwarf_regs[28] = REG(X28);
dwarf_regs[29] = REG(X29);
dwarf_regs[30] = REG(LR);
dwarf_regs[31] = REG(SP);
if (!dwfl_thread_state_registers(thread, 0, PERF_REG_ARM64_MAX,
dwarf_regs))
return false;
dwarf_pc = REG(PC);
dwfl_thread_state_register_pc(thread, dwarf_pc);
return true;
}