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Gunderson" , "Dr. David Alan Gilbert" , Chen Pei , Dima Kogan , Przemek Kitszel , "David S. Miller" , Alexander Lobakin , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-riscv@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241108_154628_108425_A4CA8D12 X-CRM114-Status: GOOD ( 16.81 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Move arch/x86/util/dwarf-regs.c to util/dwarf-regs-x86.c and compile in unconditionally. To avoid get_arch_regnum being duplicated, rename to get_x86_regnum and add to get_dwarf_regnum switch. For get_arch_regstr, this was unused on x86 unless the machine type was EM_NONE. Map that case to EM_HOST and remove get_arch_regstr from dwarf-regs-x86.c. Reviewed-by: Masami Hiramatsu (Google) Signed-off-by: Ian Rogers --- tools/perf/arch/x86/util/Build | 3 --- tools/perf/util/Build | 1 + .../dwarf-regs.c => util/dwarf-regs-x86.c} | 24 +------------------ tools/perf/util/dwarf-regs.c | 17 +++++++++++++ tools/perf/util/include/dwarf-regs.h | 8 +++++++ 5 files changed, 27 insertions(+), 26 deletions(-) rename tools/perf/{arch/x86/util/dwarf-regs.c => util/dwarf-regs-x86.c} (77%) diff --git a/tools/perf/arch/x86/util/Build b/tools/perf/arch/x86/util/Build index bc56a8e70f34..848327378694 100644 --- a/tools/perf/arch/x86/util/Build +++ b/tools/perf/arch/x86/util/Build @@ -11,9 +11,6 @@ perf-util-y += mem-events.o perf-util-y += evsel.o perf-util-y += iostat.o -perf-util-$(CONFIG_LIBDW) += dwarf-regs.o -perf-util-$(CONFIG_BPF_PROLOGUE) += dwarf-regs.o - perf-util-$(CONFIG_LOCAL_LIBUNWIND) += unwind-libunwind.o perf-util-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o diff --git a/tools/perf/util/Build b/tools/perf/util/Build index 1eedead5f2f2..4c615611b9d7 100644 --- a/tools/perf/util/Build +++ b/tools/perf/util/Build @@ -203,6 +203,7 @@ endif perf-util-$(CONFIG_LIBDW) += probe-finder.o perf-util-$(CONFIG_LIBDW) += dwarf-aux.o perf-util-$(CONFIG_LIBDW) += dwarf-regs.o +perf-util-$(CONFIG_LIBDW) += dwarf-regs-x86.o perf-util-$(CONFIG_LIBDW) += debuginfo.o perf-util-$(CONFIG_LIBDW) += annotate-data.o diff --git a/tools/perf/arch/x86/util/dwarf-regs.c b/tools/perf/util/dwarf-regs-x86.c similarity index 77% rename from tools/perf/arch/x86/util/dwarf-regs.c rename to tools/perf/util/dwarf-regs-x86.c index 530905118cd4..7a55c65e8da6 100644 --- a/tools/perf/arch/x86/util/dwarf-regs.c +++ b/tools/perf/util/dwarf-regs-x86.c @@ -11,28 +11,6 @@ #include /* for ARRAY_SIZE */ #include -#define DEFINE_DWARF_REGSTR_TABLE 1 -#include "dwarf-regs-table.h" - -/* Return architecture dependent register string (for kprobe-tracer) */ -const char *get_arch_regstr(unsigned int n) -{ -#if defined(__i386__) - size_t len = ARRAY_SIZE(x86_32_regstr_tbl); -#else - size_t len = ARRAY_SIZE(x86_64_regstr_tbl); -#endif - - if (n >= len) - return NULL; - -#if defined(__i386__) - return x86_32_regstr_tbl[n]; -#else - return x86_64_regstr_tbl[n]; -#endif -} - struct dwarf_regs_idx { const char *name; int idx; @@ -58,7 +36,7 @@ static const struct dwarf_regs_idx x86_regidx_table[] = { { "rip", DWARF_REG_PC }, }; -int get_arch_regnum(const char *name) +int get_x86_regnum(const char *name) { unsigned int i; diff --git a/tools/perf/util/dwarf-regs.c b/tools/perf/util/dwarf-regs.c index 86b3ef638fbb..eac99a246737 100644 --- a/tools/perf/util/dwarf-regs.c +++ b/tools/perf/util/dwarf-regs.c @@ -32,9 +32,17 @@ const char *get_dwarf_regstr(unsigned int n, unsigned int machine, unsigned int flags __maybe_unused) { +#if EM_HOST == EM_X86_64 || EM_HOST == EM_386 + if (machine == EM_NONE) { + /* Generic arch - use host arch */ + machine = EM_HOST; + } +#endif switch (machine) { +#if EM_HOST != EM_X86_64 && EM_HOST != EM_386 case EM_NONE: /* Generic arch - use host arch */ return get_arch_regstr(n); +#endif case EM_386: return __get_dwarf_regstr(x86_32_regstr_tbl, n); case EM_X86_64: @@ -65,10 +73,12 @@ const char *get_dwarf_regstr(unsigned int n, unsigned int machine, return NULL; } +#if EM_HOST != EM_X86_64 && EM_HOST != EM_386 __weak int get_arch_regnum(const char *name __maybe_unused) { return -ENOTSUP; } +#endif /* Return DWARF register number from architecture register name */ int get_dwarf_regnum(const char *name, unsigned int machine, unsigned int flags __maybe_unused) @@ -90,9 +100,16 @@ int get_dwarf_regnum(const char *name, unsigned int machine, unsigned int flags machine = EM_HOST; } switch (machine) { +#if EM_HOST != EM_X86_64 && EM_HOST != EM_386 case EM_HOST: reg = get_arch_regnum(regname); break; +#endif + case EM_X86_64: + fallthrough; + case EM_386: + reg = get_x86_regnum(regname); + break; default: pr_err("ELF MACHINE %x is not supported.\n", machine); } diff --git a/tools/perf/util/include/dwarf-regs.h b/tools/perf/util/include/dwarf-regs.h index 0ef428d07bcc..6aa66c375942 100644 --- a/tools/perf/util/include/dwarf-regs.h +++ b/tools/perf/util/include/dwarf-regs.h @@ -89,7 +89,10 @@ #define DWARF_REG_FB 0xd3affb /* random number */ #ifdef HAVE_LIBDW_SUPPORT +#if !defined(__x86_64__) && !defined(__i386__) const char *get_arch_regstr(unsigned int n); +#endif + /** * get_dwarf_regstr() - Returns ftrace register string from DWARF regnum. * @n: DWARF register number. @@ -98,7 +101,12 @@ const char *get_arch_regstr(unsigned int n); */ const char *get_dwarf_regstr(unsigned int n, unsigned int machine, unsigned int flags); +int get_x86_regnum(const char *name); + +#if !defined(__x86_64__) && !defined(__i386__) int get_arch_regnum(const char *name); +#endif + /* * get_dwarf_regnum - Returns DWARF regnum from register name * name: architecture register name