To best handle BTF/CO-RE in GCC, a distinct BTF_WITH_CORE_DEBUG debug format is
being added. This helps the compiler detect whether BTF with CO-RE relocations
needs to be emitted.
gcc/ChangeLog:
* flag-types.h (enum debug_info_type): Add new enum
DINFO_TYPE_BTF_WITH_CORE.
(BTF_WITH_CORE_DEBUG): New bitmask.
* flags.h (btf_with_core_debuginfo_p): New declaration.
* opts.c (btf_with_core_debuginfo_p): New definition.
---
gcc/flag-types.h | 6 +++++-
gcc/flags.h | 4 ++++
gcc/opts.c | 8 ++++++++
3 files changed, 17 insertions(+), 1 deletion(-)
diff --git a/gcc/flag-types.h b/gcc/flag-types.h
index 4fb1cb4..cc41b2a 100644
--- a/gcc/flag-types.h
+++ b/gcc/flag-types.h
@@ -31,7 +31,8 @@ enum debug_info_type
DINFO_TYPE_VMS = 4, /* VMS debug info. */
DINFO_TYPE_CTF = 5, /* CTF debug info. */
DINFO_TYPE_BTF = 6, /* BTF debug info. */
- DINFO_TYPE_MAX = DINFO_TYPE_BTF /* Marker only. */
+ DINFO_TYPE_BTF_WITH_CORE = 7, /* BTF debug info with CO-RE
relocations. */
+ DINFO_TYPE_MAX = DINFO_TYPE_BTF_WITH_CORE /* Marker only. */
};
#define NO_DEBUG (0U)
@@ -47,6 +48,9 @@ enum debug_info_type
#define CTF_DEBUG (1U << DINFO_TYPE_CTF)
/* Write BTF debug info (using btfout.c). */
#define BTF_DEBUG (1U << DINFO_TYPE_BTF)
+/* Write BTF debug info for BPF CO-RE usecase (using btfout.c). */
+#define BTF_WITH_CORE_DEBUG (1U << DINFO_TYPE_BTF_WITH_CORE)
+
/* Note: Adding new definitions to handle -combination- of debug formats,
like VMS_AND_DWARF2_DEBUG is not recommended. This definition remains
here for historical reasons. */
diff --git a/gcc/flags.h b/gcc/flags.h
index afedef0..af61bcd 100644
--- a/gcc/flags.h
+++ b/gcc/flags.h
@@ -44,6 +44,10 @@ const char * debug_set_names (uint32_t w_symbols);
extern bool btf_debuginfo_p ();
+/* Return true iff BTF with CO-RE debug info is enabled. */
+
+extern bool btf_with_core_debuginfo_p ();
+
/* Return true iff CTF debug info is enabled. */
extern bool ctf_debuginfo_p ();
diff --git a/gcc/opts.c b/gcc/opts.c
index e050155..1d2d22d 100644
--- a/gcc/opts.c
+++ b/gcc/opts.c
@@ -135,6 +135,14 @@ btf_debuginfo_p ()
return (write_symbols & BTF_DEBUG);
}
+/* Return TRUE iff BTF with CO-RE debug info is enabled. */
+
+bool
+btf_with_core_debuginfo_p ()
+{
+ return (write_symbols & BTF_WITH_CORE_DEBUG);
+}
+
/* Return TRUE iff CTF debug info is enabled. */
bool
--
1.8.3.1
