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* [gcc(refs/users/marxin/heads/lto-plugin-get_symbols_v3-v3)] Implement LDPT_REGISTER_GET_API_VERSION.
@ 2022-05-16 12:19 Martin Liska
0 siblings, 0 replies; only message in thread
From: Martin Liska @ 2022-05-16 12:19 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:0ef5f678144b8ff3a1d247a992aa2e14128b82d1
commit 0ef5f678144b8ff3a1d247a992aa2e14128b82d1
Author: Martin Liska <mliska@suse.cz>
Date: Mon May 16 14:01:52 2022 +0200
Implement LDPT_REGISTER_GET_API_VERSION.
Diff:
---
include/plugin-api.h | 14 ++++++++++++++
lto-plugin/lto-plugin.c | 38 ++++++++++++++++++++++++++++++++++++++
2 files changed, 52 insertions(+)
diff --git a/include/plugin-api.h b/include/plugin-api.h
index 8aebe2ff267..f01f4301fc9 100644
--- a/include/plugin-api.h
+++ b/include/plugin-api.h
@@ -483,6 +483,18 @@ enum ld_plugin_level
LDPL_FATAL
};
+/* The linker's interface for API version negotiation. */
+
+typedef
+int (*ld_plugin_get_api_version) (char *linker_identifier, int linker_version,
+ int preferred_linker_api,
+ const char **compiler_identifier,
+ int *compiler_version);
+
+typedef
+enum ld_plugin_status
+(*ld_plugin_register_get_api_version) (ld_plugin_get_api_version handler);
+
/* Values for the tv_tag field of the transfer vector. */
enum ld_plugin_tag
@@ -521,6 +533,7 @@ enum ld_plugin_tag
LDPT_REGISTER_NEW_INPUT_HOOK,
LDPT_GET_WRAP_SYMBOLS,
LDPT_ADD_SYMBOLS_V2,
+ LDPT_REGISTER_GET_API_VERSION,
};
/* The plugin transfer vector. */
@@ -556,6 +569,7 @@ struct ld_plugin_tv
ld_plugin_get_input_section_size tv_get_input_section_size;
ld_plugin_register_new_input tv_register_new_input;
ld_plugin_get_wrap_symbols tv_get_wrap_symbols;
+ ld_plugin_register_get_api_version tv_register_get_api_version;
} tv_u;
};
diff --git a/lto-plugin/lto-plugin.c b/lto-plugin/lto-plugin.c
index 00b760636dc..49484decd89 100644
--- a/lto-plugin/lto-plugin.c
+++ b/lto-plugin/lto-plugin.c
@@ -69,6 +69,7 @@ along with this program; see the file COPYING3. If not see
#include "../gcc/lto/common.h"
#include "simple-object.h"
#include "plugin-api.h"
+#include "ansidecl.h"
/* We need to use I64 instead of ll width-specifier on native Windows.
The reason for this is that older MS-runtimes don't support the ll. */
@@ -166,6 +167,10 @@ static ld_plugin_add_input_file add_input_file;
static ld_plugin_add_input_library add_input_library;
static ld_plugin_message message;
static ld_plugin_add_symbols add_symbols, add_symbols_v2;
+static ld_plugin_register_get_api_version register_get_api_version;
+
+/* By default, use version 1 if there is not negotiation. */
+static int used_api_version = 1;
static struct plugin_file_info *claimed_files = NULL;
static unsigned int num_claimed_files = 0;
@@ -1407,6 +1412,29 @@ process_option (const char *option)
verbose = verbose || debug;
}
+static int
+get_api_version (char *linker_identifier, int linker_version,
+ int preferred_linker_api,
+ const char **compiler_identifier,
+ int *compiler_version)
+{
+ *compiler_identifier = "GCC";
+ *compiler_version = GCC_VERSION;
+
+ if (preferred_linker_api >= 2)
+ {
+ check (get_symbols_v3, LDPL_FATAL,
+ "get_symbols_v3 requires for API version 2");
+ check (add_symbols_v2, LDPL_FATAL,
+ "add_symbols_v2 requires for API version 2");
+
+ /* The plug-in supports version 2. */
+ used_api_version = 2;
+ }
+
+ return used_api_version;
+}
+
/* Called by a linker after loading the plugin. TV is the transfer vector. */
enum ld_plugin_status
@@ -1467,12 +1495,22 @@ onload (struct ld_plugin_tv *tv)
/* We only use this to make user-friendly temp file names. */
link_output_name = p->tv_u.tv_string;
break;
+ case LDPT_REGISTER_GET_API_VERSION:
+ register_get_api_version = p->tv_u.tv_register_get_api_version;
+ break;
default:
break;
}
p++;
}
+ if (register_get_api_version)
+ {
+ status = register_get_api_version (get_api_version);
+ check (status == LDPS_OK, LDPL_FATAL,
+ "could not register the get_api_version callback");
+ }
+
check (register_claim_file, LDPL_FATAL, "register_claim_file not found");
check (add_symbols, LDPL_FATAL, "add_symbols not found");
status = register_claim_file (claim_file_handler);
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