forked from pool/dwarves
63 lines
2.2 KiB
Diff
63 lines
2.2 KiB
Diff
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From 5d27afaf31ac124edfef09862d26247b2c12b6a1 Mon Sep 17 00:00:00 2001
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From: Arnaldo Carvalho de Melo <acme@redhat.com>
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Date: Tue, 4 Oct 2022 18:09:33 -0300
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Subject: [PATCH 1/7] pahole: Support '--lang/--lang_exclude=asm'
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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It is disjoint from the other languages and then the first simple
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implementation of language inclusion/exclusion didn't support it, add
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an special case to test against 0x8001 (DW_LANG_Mips_Assembler) to cover
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that.
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This is needed as recently compilers started to add DWARF constructs to
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represent asm CUs that broke pahole as it didn't support
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DW_TAG_unspecified_type as a "type", so add it in case in the future we
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want to exclude such CUs.
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The DW_TAG_unspecified_type tag is going to be supported in the next
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csets tho.
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We also may want this to exclude new tags that aren't supported in BTF,
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etc.
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Cc: Martin Liška <mliska@suse.cz>
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Cc: Nick Clifton <nickc@redhat.com>
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Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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---
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dwarves.c | 3 +++
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man-pages/pahole.1 | 2 +-
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2 files changed, 4 insertions(+), 1 deletion(-)
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diff --git a/dwarves.c b/dwarves.c
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index db1dcf5904bc98fe..32bfec5ea0f1a338 100644
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--- a/dwarves.c
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+++ b/dwarves.c
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@@ -2127,6 +2127,9 @@ int lang__str2int(const char *lang)
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[DW_LANG_UPC] = "upc",
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};
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+ if (strcasecmp(lang, "asm") == 0)
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+ return DW_LANG_Mips_Assembler;
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+
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// c89 is the first, bliss is the last, see /usr/include/dwarf.h
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for (int id = DW_LANG_C89; id <= DW_LANG_BLISS; ++id)
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if (languages[id] && strcasecmp(lang, languages[id]) == 0)
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diff --git a/man-pages/pahole.1 b/man-pages/pahole.1
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index bb88e2f5f55a2ee9..f60713a7118d9b63 100644
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--- a/man-pages/pahole.1
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+++ b/man-pages/pahole.1
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@@ -378,7 +378,7 @@ Only process compilation units built from source code written in the specified l
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Supported languages:
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- ada83, ada95, bliss, c, c89, c99, c11, c++, c++03, c++11, c++14, cobol74,
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+ ada83, ada95, asm, bliss, c, c89, c99, c11, c++, c++03, c++11, c++14, cobol74,
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cobol85, d, dylan, fortran77, fortran90, fortran95, fortran03, fortran08,
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go, haskell, java, julia, modula2, modula3, objc, objc++, ocaml, opencl,
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pascal83, pli, python, renderscript, rust, swift, upc
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--
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2.39.1
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