From: David Faust <david.faust@oracle.com>
To: gcc-patches@gcc.gnu.org
Cc: jose.marchesi@oracle.com, yhs@fb.com
Subject: [PATCH 2/9] include: Add new definitions
Date: Tue, 7 Jun 2022 14:43:35 -0700 [thread overview]
Message-ID: <20220607214342.19463-3-david.faust@oracle.com> (raw)
In-Reply-To: <20220607214342.19463-1-david.faust@oracle.com>
include/
* btf.h: Add BTF_KIND_DECL_TAG and BTF_KIND_TYPE_TAG defines. Update
comments.
(struct btf_decl_tag): New.
* dwarf2.def: Add new DWARF extension DW_TAG_GNU_annotation.
---
include/btf.h | 17 +++++++++++++++--
include/dwarf2.def | 4 ++++
2 files changed, 19 insertions(+), 2 deletions(-)
diff --git a/include/btf.h b/include/btf.h
index 78b551ced23..37deaef8b48 100644
--- a/include/btf.h
+++ b/include/btf.h
@@ -69,7 +69,7 @@ struct btf_type
/* SIZE is used by INT, ENUM, STRUCT, UNION, DATASEC kinds.
TYPE is used by PTR, TYPEDEF, VOLATILE, CONST, RESTRICT, FUNC,
- FUNC_PROTO and VAR kinds. */
+ FUNC_PROTO, VAR and DECL_TAG kinds. */
union
{
uint32_t size; /* Size of the entire type, in bytes. */
@@ -109,7 +109,9 @@ struct btf_type
#define BTF_KIND_VAR 14 /* Variable. */
#define BTF_KIND_DATASEC 15 /* Section such as .bss or .data. */
#define BTF_KIND_FLOAT 16 /* Floating point. */
-#define BTF_KIND_MAX BTF_KIND_FLOAT
+#define BTF_KIND_DECL_TAG 17 /* Decl Tag. */
+#define BTF_KIND_TYPE_TAG 18 /* Type Tag. */
+#define BTF_KIND_MAX BTF_KIND_TYPE_TAG
#define NR_BTF_KINDS (BTF_KIND_MAX + 1)
/* For some BTF_KINDs, struct btf_type is immediately followed by
@@ -190,6 +192,17 @@ struct btf_var_secinfo
uint32_t size; /* Size (in bytes) of variable. */
};
+/* BTF_KIND_DECL_TAG is followed by a single struct btf_decl_tag, which
+ describes the tag location:
+ - If component_idx == -1, then the tag is applied to a struct, union,
+ variable or function.
+ - Otherwise it is applied to a struct/union member or function argument
+ with the given given index numbered 0..vlen-1. */
+struct btf_decl_tag
+{
+ int32_t component_idx;
+};
+
#ifdef __cplusplus
}
#endif
diff --git a/include/dwarf2.def b/include/dwarf2.def
index 530c6f849f9..a1f7a47a036 100644
--- a/include/dwarf2.def
+++ b/include/dwarf2.def
@@ -174,6 +174,10 @@ DW_TAG (DW_TAG_GNU_formal_parameter_pack, 0x4108)
are properly part of DWARF 5. */
DW_TAG (DW_TAG_GNU_call_site, 0x4109)
DW_TAG (DW_TAG_GNU_call_site_parameter, 0x410a)
+
+/* Extension for BTF annotations. */
+DW_TAG (DW_TAG_GNU_annotation, 0x6000)
+
/* Extensions for UPC. See: http://dwarfstd.org/doc/DWARF4.pdf. */
DW_TAG (DW_TAG_upc_shared_type, 0x8765)
DW_TAG (DW_TAG_upc_strict_type, 0x8766)
--
2.36.1
next prev parent reply other threads:[~2022-06-07 21:44 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-07 21:43 [PATCH 0/9] Add debug_annotate attributes David Faust
2022-06-07 21:43 ` [PATCH 1/9] dwarf: add dw_get_die_parent function David Faust
2022-06-13 10:13 ` Richard Biener
2022-06-07 21:43 ` David Faust [this message]
2022-06-07 21:43 ` [PATCH 3/9] c-family: Add debug_annotate attribute handlers David Faust
2022-06-07 21:43 ` [PATCH 4/9] dwarf: generate annotation DIEs David Faust
2022-06-07 21:43 ` [PATCH 5/9] ctfc: pass through debug annotations to BTF David Faust
2022-06-07 21:43 ` [PATCH 6/9] dwarf2ctf: convert annotation DIEs to CTF types David Faust
2022-06-07 21:43 ` [PATCH 7/9] btf: output decl_tag and type_tag records David Faust
2022-06-07 21:43 ` [PATCH 8/9] doc: document new attributes David Faust
2022-06-07 21:43 ` [PATCH 9/9] testsuite: add debug annotation tests David Faust
2022-06-15 5:53 ` [PATCH 0/9] Add debug_annotate attributes Yonghong Song
2022-06-15 20:57 ` David Faust
2022-06-15 22:56 ` Yonghong Song
2022-06-17 17:18 ` kernel sparse annotations vs. compiler attributes and debug_annotate_{type,decl} WAS: " Jose E. Marchesi
2022-06-20 17:06 ` kernel sparse annotations vs. compiler attributes and debug_annotate_{type, decl} " Yonghong Song
2022-06-21 16:12 ` kernel sparse annotations vs. compiler attributes and debug_annotate_{type,decl} " Jose E. Marchesi
2022-06-24 18:01 ` kernel sparse annotations vs. compiler attributes and debug_annotate_{type, decl} " Yonghong Song
2022-07-07 20:24 ` kernel sparse annotations vs. compiler attributes and debug_annotate_{type,decl} " Jose E. Marchesi
2022-07-13 4:23 ` kernel sparse annotations vs. compiler attributes and debug_annotate_{type, decl} " Yonghong Song
2022-07-14 15:09 ` kernel sparse annotations vs. compiler attributes and debug_annotate_{type,decl} " Jose E. Marchesi
2022-07-15 1:20 ` kernel sparse annotations vs. compiler attributes and debug_annotate_{type, decl} " Yonghong Song
2022-07-15 14:17 ` kernel sparse annotations vs. compiler attributes and debug_annotate_{type,decl} " Jose E. Marchesi
2022-07-15 16:48 ` kernel sparse annotations vs. compiler attributes and debug_annotate_{type, decl} " Yonghong Song
2022-11-01 22:29 ` Yonghong Song
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