perf-eh_elf/arch/x86/util/unwind-libunwind.c

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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 19:48:36 +02:00
// SPDX-License-Identifier: GPL-2.0
#include <errno.h>
#ifndef REMOTE_UNWIND_LIBUNWIND
#include <libunwind.h>
#include "perf_regs.h"
#include "../../util/unwind.h"
#include "../../util/debug.h"
#endif
#ifdef HAVE_ARCH_X86_64_SUPPORT
int LIBUNWIND__ARCH_REG_ID(int regnum)
{
int id;
switch (regnum) {
case UNW_X86_64_RAX:
id = PERF_REG_X86_AX;
break;
case UNW_X86_64_RDX:
id = PERF_REG_X86_DX;
break;
case UNW_X86_64_RCX:
id = PERF_REG_X86_CX;
break;
case UNW_X86_64_RBX:
id = PERF_REG_X86_BX;
break;
case UNW_X86_64_RSI:
id = PERF_REG_X86_SI;
break;
case UNW_X86_64_RDI:
id = PERF_REG_X86_DI;
break;
case UNW_X86_64_RBP:
id = PERF_REG_X86_BP;
break;
case UNW_X86_64_RSP:
id = PERF_REG_X86_SP;
break;
case UNW_X86_64_R8:
id = PERF_REG_X86_R8;
break;
case UNW_X86_64_R9:
id = PERF_REG_X86_R9;
break;
case UNW_X86_64_R10:
id = PERF_REG_X86_R10;
break;
case UNW_X86_64_R11:
id = PERF_REG_X86_R11;
break;
case UNW_X86_64_R12:
id = PERF_REG_X86_R12;
break;
case UNW_X86_64_R13:
id = PERF_REG_X86_R13;
break;
case UNW_X86_64_R14:
id = PERF_REG_X86_R14;
break;
case UNW_X86_64_R15:
id = PERF_REG_X86_R15;
break;
case UNW_X86_64_RIP:
id = PERF_REG_X86_IP;
break;
default:
pr_err("unwind: invalid reg id %d\n", regnum);
return -EINVAL;
}
return id;
}
#else
int LIBUNWIND__ARCH_REG_ID(int regnum)
{
int id;
switch (regnum) {
case UNW_X86_EAX:
id = PERF_REG_X86_AX;
break;
case UNW_X86_EDX:
id = PERF_REG_X86_DX;
break;
case UNW_X86_ECX:
id = PERF_REG_X86_CX;
break;
case UNW_X86_EBX:
id = PERF_REG_X86_BX;
break;
case UNW_X86_ESI:
id = PERF_REG_X86_SI;
break;
case UNW_X86_EDI:
id = PERF_REG_X86_DI;
break;
case UNW_X86_EBP:
id = PERF_REG_X86_BP;
break;
case UNW_X86_ESP:
id = PERF_REG_X86_SP;
break;
case UNW_X86_EIP:
id = PERF_REG_X86_IP;
break;
default:
pr_err("unwind: invalid reg id %d\n", regnum);
return -EINVAL;
}
return id;
}
#endif /* HAVE_ARCH_X86_64_SUPPORT */