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8838abf626
In Makefile.config for unwinding the name dwarf implies either libunwind or libdw. Make it clearer that HAVE_DWARF_SUPPORT is really just defined when libdw is present by renaming to HAVE_LIBDW_SUPPORT. Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Leo Yan <leo.yan@arm.com> Cc: Anup Patel <anup@brainfault.org> Cc: Yang Jihong <yangjihong@bytedance.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: David S. Miller <davem@davemloft.net> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Shenlin Liang <liangshenlin@eswincomputing.com> Cc: Nick Terrell <terrelln@fb.com> Cc: Guilherme Amadio <amadio@gentoo.org> Cc: Steinar H. Gunderson <sesse@google.com> Cc: Changbin Du <changbin.du@huawei.com> Cc: Alexander Lobakin <aleksander.lobakin@intel.com> Cc: Przemek Kitszel <przemyslaw.kitszel@intel.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Guo Ren <guoren@kernel.org> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Masami Hiramatsu (Google) <mhiramat@kernel.org> Cc: Will Deacon <will@kernel.org> Cc: James Clark <james.clark@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Chen Pei <cp0613@linux.alibaba.com> Cc: Leo Yan <leo.yan@linux.dev> Cc: Oliver Upton <oliver.upton@linux.dev> Cc: Aditya Gupta <adityag@linux.ibm.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-riscv@lists.infradead.org Cc: Bibo Mao <maobibo@loongson.cn> Cc: John Garry <john.g.garry@oracle.com> Cc: Atish Patra <atishp@rivosinc.com> Cc: Dima Kogan <dima@secretsauce.net> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Dr. David Alan Gilbert <linux@treblig.org> Cc: linux-csky@vger.kernel.org Link: https://lore.kernel.org/r/20241017001354.56973-11-irogers@google.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>
54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _PERF_DWARF_REGS_H_
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#define _PERF_DWARF_REGS_H_
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#include "annotate.h"
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#define DWARF_REG_PC 0xd3af9c /* random number */
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#define DWARF_REG_FB 0xd3affb /* random number */
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#ifdef HAVE_LIBDW_SUPPORT
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const char *get_arch_regstr(unsigned int n);
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/*
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* get_dwarf_regstr - Returns ftrace register string from DWARF regnum
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* n: DWARF register number
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* machine: ELF machine signature (EM_*)
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*/
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const char *get_dwarf_regstr(unsigned int n, unsigned int machine);
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int get_arch_regnum(const char *name);
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/*
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* get_dwarf_regnum - Returns DWARF regnum from register name
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* name: architecture register name
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* machine: ELF machine signature (EM_*)
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*/
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int get_dwarf_regnum(const char *name, unsigned int machine);
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#else /* HAVE_LIBDW_SUPPORT */
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static inline int get_dwarf_regnum(const char *name __maybe_unused,
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unsigned int machine __maybe_unused)
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{
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return -1;
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}
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#endif
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#if !defined(__powerpc__) || !defined(HAVE_LIBDW_SUPPORT)
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static inline void get_powerpc_regs(u32 raw_insn __maybe_unused, int is_source __maybe_unused,
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struct annotated_op_loc *op_loc __maybe_unused)
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{
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return;
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}
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#else
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void get_powerpc_regs(u32 raw_insn, int is_source, struct annotated_op_loc *op_loc);
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#endif
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#ifdef HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
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/*
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* Arch should support fetching the offset of a register in pt_regs
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* by its name. See kernel's regs_query_register_offset in
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* arch/xxx/kernel/ptrace.c.
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*/
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int regs_query_register_offset(const char *name);
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#endif
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#endif
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