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https://github.com/dynup/kpatch
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13182e50b0
Fix build error seen on gcc (GCC) 12.1.1 20220507 (Red Hat 12.1.1-1):
g++ -MMD -MP -I../kmod/patch -Iinsn -Wall -Wsign-compare -Wno-sign-conversion -g -Werror -shared -I/usr/lib/gcc/ppc64le-redhat-linux/12/plugin/include -Igcc-plugins -fPIC -fno-rtti -O2 -Wall gcc-plugins/ppc64le-plugin.c -o gcc-plugins/ppc64le-plugin.so
In file included from /usr/include/features.h:490,
from /usr/include/bits/libc-header-start.h:33,
from /usr/include/stdio.h:27,
from /usr/lib/gcc/ppc64le-redhat-linux/12/plugin/include/system.h:46,
from /usr/lib/gcc/ppc64le-redhat-linux/12/plugin/include/gcc-plugin.h:28,
from gcc-plugins/gcc-common.h:6,
from gcc-plugins/ppc64le-plugin.c:1:
/usr/include/bits/error-ldbl.h:23:1: error: type of ‘error’ is unknown
23 | __LDBL_REDIR_DECL (error)
| ^~~~~~~~~~~~~~~~~
/usr/include/bits/error-ldbl.h:23:1: error: ‘int error’ redeclared as different kind of entity
23 | __LDBL_REDIR_DECL (error)
| ^~~~~~~~~~~~~~~~~
In file included from gcc-plugins/ppc64le-plugin.c:2:
/usr/include/error.h:31:13: note: previous declaration ‘void error(int, int, const char*, ...)’
31 | extern void error (int __status, int __errnum, const char *__format, ...)
| ^~~~~
make[1]: *** [Makefile:39: gcc-plugins/ppc64le-plugin.so] Error 1
Signed-off-by: Joe Lawrence <joe.lawrence@redhat.com>
98 lines
2.6 KiB
C
98 lines
2.6 KiB
C
#include <error.h>
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#include "gcc-common.h"
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#define PLUGIN_NAME "ppc64le-plugin"
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#if BUILDING_GCC_VERSION < 10000
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#define CALL_LOCAL "*call_local_aixdi"
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#define CALL_NONLOCAL "*call_nonlocal_aixdi"
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#define CALL_VALUE_LOCAL "*call_value_local_aixdi"
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#define CALL_VALUE_NONLOCAL "*call_value_nonlocal_aixdi"
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#else
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#define CALL_LOCAL "*call_localdi"
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#define CALL_NONLOCAL "*call_nonlocal_aixdi"
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#define CALL_VALUE_LOCAL "*call_value_localdi"
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#define CALL_VALUE_NONLOCAL "*call_value_nonlocal_aixdi"
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#endif
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int plugin_is_GPL_compatible;
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struct plugin_info plugin_info = {
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.version = "1",
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.help = PLUGIN_NAME ": insert nops after local calls\n",
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};
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static unsigned int ppc64le_plugin_execute(void)
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{
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rtx_insn *insn;
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int code;
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const char *name;
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static int nonlocal_code = -1, local_code = -1,
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value_nonlocal_code = -1, value_local_code = -1;
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static bool initialized = false;
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if (initialized)
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goto found;
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/* Find the rs6000.md code numbers for local and non-local calls */
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initialized = true;
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for (code = 0; code < 1000; code++) {
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name = get_insn_name(code);
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if (!name)
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continue;
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if (!strcmp(name , CALL_LOCAL))
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local_code = code;
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else if (!strcmp(name , CALL_NONLOCAL))
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nonlocal_code = code;
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else if (!strcmp(name, CALL_VALUE_LOCAL))
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value_local_code = code;
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else if (!strcmp(name, CALL_VALUE_NONLOCAL))
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value_nonlocal_code = code;
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if (nonlocal_code != -1 && local_code != -1 &&
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value_nonlocal_code != -1 && value_local_code != -1)
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goto found;
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}
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found:
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if (nonlocal_code == -1 || local_code == -1 ||
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value_nonlocal_code == -1 || value_local_code == -1) {
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error("%s: cannot find call instruction codes", PLUGIN_NAME);
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}
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/* Convert local calls to non-local */
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for (insn = get_insns(); insn; insn = NEXT_INSN(insn)) {
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if (GET_CODE(insn) == CALL_INSN) {
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if (INSN_CODE(insn) == local_code)
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INSN_CODE(insn) = nonlocal_code;
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else if (INSN_CODE(insn) == value_local_code)
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INSN_CODE(insn) = value_nonlocal_code;
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}
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}
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return 0;
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}
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#define PASS_NAME ppc64le_plugin
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#define NO_GATE
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#include "gcc-generate-rtl-pass.h"
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int plugin_init(struct plugin_name_args *plugin_info,
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struct plugin_gcc_version *version)
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{
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const char * const plugin_name = plugin_info->base_name;
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PASS_INFO(ppc64le_plugin, "vregs", 1, PASS_POS_INSERT_AFTER);
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if (!plugin_default_version_check(version, &gcc_version))
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error(1, 0, PLUGIN_NAME ": incompatible gcc/plugin versions");
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register_callback(plugin_name, PLUGIN_INFO, NULL, &plugin_info);
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register_callback(plugin_name, PLUGIN_PASS_MANAGER_SETUP, NULL,
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&ppc64le_plugin_pass_info);
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return 0;
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}
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