linux-kernel - [PATCH v3 03/20] perf dwarf-regs: Add EM_HOST and EF

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Message-Id: <20241017002520.59124-4-irogers@google.com>
Date: Wed, 16 Oct 2024 17:25:03 -0700
From: Ian Rogers <irogers@...gle.com>
To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, 
	Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>, 
	Mark Rutland <mark.rutland@....com>, 
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>, 
	Ian Rogers <irogers@...gle.com>, Adrian Hunter <adrian.hunter@...el.com>, 
	Kan Liang <kan.liang@...ux.intel.com>, John Garry <john.g.garry@...cle.com>, 
	Will Deacon <will@...nel.org>, James Clark <james.clark@...aro.org>, 
	Mike Leach <mike.leach@...aro.org>, Leo Yan <leo.yan@...ux.dev>, Guo Ren <guoren@...nel.org>, 
	Paul Walmsley <paul.walmsley@...ive.com>, Palmer Dabbelt <palmer@...belt.com>, 
	Albert Ou <aou@...s.berkeley.edu>, Nick Terrell <terrelln@...com>, 
	"Masami Hiramatsu (Google)" <mhiramat@...nel.org>, Changbin Du <changbin.du@...wei.com>, 
	Guilherme Amadio <amadio@...too.org>, Yang Jihong <yangjihong@...edance.com>, 
	Aditya Gupta <adityag@...ux.ibm.com>, Athira Rajeev <atrajeev@...ux.vnet.ibm.com>, 
	Masahiro Yamada <masahiroy@...nel.org>, Bibo Mao <maobibo@...ngson.cn>, 
	Huacai Chen <chenhuacai@...nel.org>, Kajol Jain <kjain@...ux.ibm.com>, 
	Atish Patra <atishp@...osinc.com>, Shenlin Liang <liangshenlin@...incomputing.com>, 
	Anup Patel <anup@...infault.org>, Oliver Upton <oliver.upton@...ux.dev>, 
	"Steinar H. Gunderson" <sesse@...gle.com>, "Dr. David Alan Gilbert" <linux@...blig.org>, 
	Chen Pei <cp0613@...ux.alibaba.com>, Dima Kogan <dima@...retsauce.net>, 
	Przemek Kitszel <przemyslaw.kitszel@...el.com>, "David S. Miller" <davem@...emloft.net>, 
	Alexander Lobakin <aleksander.lobakin@...el.com>, linux-kernel@...r.kernel.org, 
	linux-perf-users@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
	linux-csky@...r.kernel.org, linux-riscv@...ts.infradead.org
Subject: [PATCH v3 03/20] perf dwarf-regs: Add EM_HOST and EF_HOST defines

Computed from the build architecture defines, EM_HOST and EF_HOST give
values that can be used in dwarf register lookup. Place in
dwarf-regs.h so the value can be shared. Move some dwarf-regs.c
constants used for EM_HOST to dwarf-regs.h.

Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/util/dwarf-regs.c         |  8 ----
 tools/perf/util/include/dwarf-regs.h | 72 ++++++++++++++++++++++++++++
 2 files changed, 72 insertions(+), 8 deletions(-)

diff --git a/tools/perf/util/dwarf-regs.c b/tools/perf/util/dwarf-regs.c
index 5b7f86c0063f..7c01bc4d7e5b 100644
--- a/tools/perf/util/dwarf-regs.c
+++ b/tools/perf/util/dwarf-regs.c
@@ -13,14 +13,6 @@
 #include <errno.h>
 #include <linux/kernel.h>
 
-#ifndef EM_AARCH64
-#define EM_AARCH64	183  /* ARM 64 bit */
-#endif
-
-#ifndef EM_LOONGARCH
-#define EM_LOONGARCH	258 /* LoongArch */
-#endif
-
 /* Define const char * {arch}_register_tbl[] */
 #define DEFINE_DWARF_REGSTR_TABLE
 #include "../arch/x86/include/dwarf-regs-table.h"
diff --git a/tools/perf/util/include/dwarf-regs.h b/tools/perf/util/include/dwarf-regs.h
index fbdd7307e0c2..f4f87ded5e3d 100644
--- a/tools/perf/util/include/dwarf-regs.h
+++ b/tools/perf/util/include/dwarf-regs.h
@@ -2,6 +2,78 @@
 #ifndef _PERF_DWARF_REGS_H_
 #define _PERF_DWARF_REGS_H_
 #include "annotate.h"
+#include <elf.h>
+
+#ifndef EM_AARCH64
+#define EM_AARCH64	183  /* ARM 64 bit */
+#endif
+
+#ifndef EM_LOONGARCH
+#define EM_LOONGARCH	258 /* LoongArch */
+#endif
+
+/* EM_HOST gives the ELF machine for host, EF_HOST gives additional flags. */
+#if defined(__x86_64__)
+  #define EM_HOST EM_X86_64
+#elif defined(__i386__)
+  #define EM_HOST EM_386
+#elif defined(__aarch64__)
+  #define EM_HOST EM_AARCH64
+#elif defined(__arm__)
+  #define EM_HOST EM_ARM
+#elif defined(__alpha__)
+  #define EM_HOST EM_ALPHA
+#elif defined(__arc__)
+  #define EM_HOST EM_ARC
+#elif defined(__AVR__)
+  #define EM_HOST EM_AVR
+#elif defined(__AVR32__)
+  #define EM_HOST EM_AVR32
+#elif defined(__bfin__)
+  #define EM_HOST EM_BLACKFIN
+#elif defined(__csky__)
+  #define EM_HOST EM_CSKY
+  #if defined(__CSKYABIV2__)
+    #define EF_HOST EF_CSKY_ABIV2
+  #else
+    #define EF_HOST EF_CSKY_ABIV1
+  #endif
+#elif defined(__cris__)
+  #define EM_HOST EM_CRIS
+#elif defined(__hppa__) // HP PA-RISC
+  #define EM_HOST EM_PARISC
+#elif defined(__loongarch__)
+  #define EM_HOST EM_LOONGARCH
+#elif defined(__mips__)
+  #define EM_HOST EM_MIPS
+#elif defined(__m32r__)
+  #define EM_HOST EM_M32R
+#elif defined(__microblaze__)
+  #define EM_HOST EM_MICROBLAZE
+#elif defined(__MSP430__)
+  #define EM_HOST EM_MSP430
+#elif defined(__powerpc64__)
+  #define EM_HOST EM_PPC64
+#elif defined(__powerpc__)
+  #define EM_HOST EM_PPC
+#elif defined(__riscv)
+  #define EM_HOST EM_RISCV
+#elif defined(__s390x__)
+  #define EM_HOST EM_S390
+#elif defined(__sh__)
+  #define EM_HOST EM_SH
+#elif defined(__sparc64__) || defined(__sparc__)
+  #define EM_HOST EM_SPARC
+#elif defined(__xtensa__)
+  #define EM_HOST EM_XTENSA
+#else
+  /* Unknown host ELF machine type. */
+  #define EM_HOST EM_NONE
+#endif
+
+#if !defined(EF_HOST)
+  #define EF_HOST 0
+#endif
 
 #define DWARF_REG_PC  0xd3af9c /* random number */
 #define DWARF_REG_FB  0xd3affb /* random number */
-- 
2.47.0.105.g07ac214952-goog