linux-kernel - [PATCH 04/37] perf symbols: Set PLT entry/header sizes properly on Sparc

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Message-Id: <20181025111031.3440-5-acme@kernel.org>
Date:   Thu, 25 Oct 2018 08:09:58 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     Clark Williams <williams@...hat.com>, linux-kernel@...r.kernel.org,
        linux-perf-users@...r.kernel.org,
        David Miller <davem@...emloft.net>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Alexis Berlemont <alexis.berlemont@...il.com>,
        David Tolnay <dtolnay@...il.com>,
        Hanjun Guo <guohanjun@...wei.com>,
        Hemant Kumar <hemant@...ux.vnet.ibm.com>,
        Li Bin <huawei.libin@...wei.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Milian Wolff <milian.wolff@...b.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Wang Nan <wangnan0@...wei.com>, zhangmengting@...wei.com,
        Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [PATCH 04/37] perf symbols: Set PLT entry/header sizes properly on Sparc

From: David Miller <davem@...emloft.net>

Using the sh_entsize for both values isn't correct.  It happens to be
correct on x86...

For both 32-bit and 64-bit sparc, there are four PLT entries in the PLT
section.

Signed-off-by: David S. Miller <davem@...emloft.net>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Alexis Berlemont <alexis.berlemont@...il.com>
Cc: David Tolnay <dtolnay@...il.com>
Cc: Hanjun Guo <guohanjun@...wei.com>
Cc: Hemant Kumar <hemant@...ux.vnet.ibm.com>
Cc: Li Bin <huawei.libin@...wei.com>
Cc: Masami Hiramatsu <mhiramat@...nel.org>
Cc: Milian Wolff <milian.wolff@...b.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Wang Nan <wangnan0@...wei.com>
Cc: zhangmengting@...wei.com
Fixes: b2f7605076d6 ("perf symbols: Fix plt entry calculation for ARM and AARCH64")
Link: http://lkml.kernel.org/r/20181017.120859.2268840244308635255.davem@davemloft.net
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/symbol-elf.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c
index 29770ea61768..6e70cc00c161 100644
--- a/tools/perf/util/symbol-elf.c
+++ b/tools/perf/util/symbol-elf.c
@@ -324,7 +324,17 @@ int dso__synthesize_plt_symbols(struct dso *dso, struct symsrc *ss)
 			plt_entry_size = 16;
 			break;
 
-		default: /* FIXME: s390/alpha/mips/parisc/poperpc/sh/sparc/xtensa need to be checked */
+		case EM_SPARC:
+			plt_header_size = 48;
+			plt_entry_size = 12;
+			break;
+
+		case EM_SPARCV9:
+			plt_header_size = 128;
+			plt_entry_size = 32;
+			break;
+
+		default: /* FIXME: s390/alpha/mips/parisc/poperpc/sh/xtensa need to be checked */
 			plt_header_size = shdr_plt.sh_entsize;
 			plt_entry_size = shdr_plt.sh_entsize;
 			break;
-- 
2.14.4