Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2)  * Copyright 2013-2017 by PaX Team <pageexec@freemail.hu>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Licensed under the GPL v2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Note: the choice of the license means that the compilation process is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *       NOT 'eligible' as defined by gcc's library exception to the GPL v3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  *       but for the kernel it doesn't matter since it doesn't link against
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  *       any of the gcc libraries
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  * gcc plugin to forcibly initialize certain local variables that could
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  * otherwise leak kernel stack to userland if they aren't properly initialized
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)  * by later code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14)  * Homepage: https://pax.grsecurity.net/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16)  * Options:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17)  * -fplugin-arg-structleak_plugin-disable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18)  * -fplugin-arg-structleak_plugin-verbose
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19)  * -fplugin-arg-structleak_plugin-byref
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20)  * -fplugin-arg-structleak_plugin-byref-all
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22)  * Usage:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23)  * $ # for 4.5/4.6/C based 4.7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24)  * $ gcc -I`gcc -print-file-name=plugin`/include -I`gcc -print-file-name=plugin`/include/c-family -fPIC -shared -O2 -o structleak_plugin.so structleak_plugin.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25)  * $ # for C++ based 4.7/4.8+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26)  * $ g++ -I`g++ -print-file-name=plugin`/include -I`g++ -print-file-name=plugin`/include/c-family -fPIC -shared -O2 -o structleak_plugin.so structleak_plugin.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27)  * $ gcc -fplugin=./structleak_plugin.so test.c -O2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29)  * TODO: eliminate redundant initializers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #include "gcc-common.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) /* unused C type flag in all versions 4.5-6 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) #define TYPE_USERSPACE(TYPE) TYPE_LANG_FLAG_5(TYPE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) __visible int plugin_is_GPL_compatible;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) static struct plugin_info structleak_plugin_info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	.version	= "20190125vanilla",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	.help		= "disable\tdo not activate plugin\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 			  "byref\tinit structs passed by reference\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 			  "byref-all\tinit anything passed by reference\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 			  "verbose\tprint all initialized variables\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) #define BYREF_STRUCT	1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) #define BYREF_ALL	2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) static bool verbose;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) static int byref;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) static tree handle_user_attribute(tree *node, tree name, tree args, int flags, bool *no_add_attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	*no_add_attrs = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	/* check for types? for now accept everything linux has to offer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	if (TREE_CODE(*node) != FIELD_DECL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 		return NULL_TREE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	*no_add_attrs = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	return NULL_TREE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) static struct attribute_spec user_attr = { };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) static void register_attributes(void *event_data, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	user_attr.name			= "user";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	user_attr.handler		= handle_user_attribute;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) #if BUILDING_GCC_VERSION >= 4007
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	user_attr.affects_type_identity	= true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	register_attribute(&user_attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) static tree get_field_type(tree field)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	return strip_array_types(TREE_TYPE(field));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) static bool is_userspace_type(tree type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	tree field;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	for (field = TYPE_FIELDS(type); field; field = TREE_CHAIN(field)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 		tree fieldtype = get_field_type(field);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		enum tree_code code = TREE_CODE(fieldtype);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 		if (code == RECORD_TYPE || code == UNION_TYPE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 			if (is_userspace_type(fieldtype))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 				return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 		if (lookup_attribute("user", DECL_ATTRIBUTES(field)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 			return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) static void finish_type(void *event_data, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	tree type = (tree)event_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	if (type == NULL_TREE || type == error_mark_node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) #if BUILDING_GCC_VERSION >= 5000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	if (TREE_CODE(type) == ENUMERAL_TYPE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	if (TYPE_USERSPACE(type))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	if (is_userspace_type(type))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 		TYPE_USERSPACE(type) = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) static void initialize(tree var)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	basic_block bb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	gimple_stmt_iterator gsi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	tree initializer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	gimple init_stmt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	tree type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	/* this is the original entry bb before the forced split */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	bb = single_succ(ENTRY_BLOCK_PTR_FOR_FN(cfun));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	/* first check if variable is already initialized, warn otherwise */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	for (gsi = gsi_start_bb(bb); !gsi_end_p(gsi); gsi_next(&gsi)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 		gimple stmt = gsi_stmt(gsi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 		tree rhs1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 		/* we're looking for an assignment of a single rhs... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 		if (!gimple_assign_single_p(stmt))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 		rhs1 = gimple_assign_rhs1(stmt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) #if BUILDING_GCC_VERSION >= 4007
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 		/* ... of a non-clobbering expression... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 		if (TREE_CLOBBER_P(rhs1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 		/* ... to our variable... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 		if (gimple_get_lhs(stmt) != var)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 		/* if it's an initializer then we're good */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 		if (TREE_CODE(rhs1) == CONSTRUCTOR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 			return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	/* these aren't the 0days you're looking for */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	if (verbose)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 		inform(DECL_SOURCE_LOCATION(var),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 			"%s variable will be forcibly initialized",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 			(byref && TREE_ADDRESSABLE(var)) ? "byref"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 							 : "userspace");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	/* build the initializer expression */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	type = TREE_TYPE(var);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	if (AGGREGATE_TYPE_P(type))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 		initializer = build_constructor(type, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 		initializer = fold_convert(type, integer_zero_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	/* build the initializer stmt */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	init_stmt = gimple_build_assign(var, initializer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	gsi = gsi_after_labels(single_succ(ENTRY_BLOCK_PTR_FOR_FN(cfun)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	gsi_insert_before(&gsi, init_stmt, GSI_NEW_STMT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	update_stmt(init_stmt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) static unsigned int structleak_execute(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	basic_block bb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	unsigned int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	tree var;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	/* split the first bb where we can put the forced initializers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	gcc_assert(single_succ_p(ENTRY_BLOCK_PTR_FOR_FN(cfun)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	bb = single_succ(ENTRY_BLOCK_PTR_FOR_FN(cfun));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	if (!single_pred_p(bb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 		split_edge(single_succ_edge(ENTRY_BLOCK_PTR_FOR_FN(cfun)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 		gcc_assert(single_succ_p(ENTRY_BLOCK_PTR_FOR_FN(cfun)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	/* enumerate all local variables and forcibly initialize our targets */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	FOR_EACH_LOCAL_DECL(cfun, i, var) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 		tree type = TREE_TYPE(var);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 		gcc_assert(DECL_P(var));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 		if (!auto_var_in_fn_p(var, current_function_decl))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 		/* only care about structure types unless byref-all */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 		if (byref != BYREF_ALL && TREE_CODE(type) != RECORD_TYPE && TREE_CODE(type) != UNION_TYPE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 		/* if the type is of interest, examine the variable */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 		if (TYPE_USERSPACE(type) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 		    (byref && TREE_ADDRESSABLE(var)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 			initialize(var);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) #define PASS_NAME structleak
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) #define NO_GATE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) #define PROPERTIES_REQUIRED PROP_cfg
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) #define TODO_FLAGS_FINISH TODO_verify_il | TODO_verify_ssa | TODO_verify_stmts | TODO_dump_func | TODO_remove_unused_locals | TODO_update_ssa | TODO_ggc_collect | TODO_verify_flow
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) #include "gcc-generate-gimple-pass.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) __visible int plugin_init(struct plugin_name_args *plugin_info, struct plugin_gcc_version *version)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	const char * const plugin_name = plugin_info->base_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	const int argc = plugin_info->argc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	const struct plugin_argument * const argv = plugin_info->argv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	bool enable = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	PASS_INFO(structleak, "early_optimizations", 1, PASS_POS_INSERT_BEFORE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	if (!plugin_default_version_check(version, &gcc_version)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 		error(G_("incompatible gcc/plugin versions"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 		return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	if (strncmp(lang_hooks.name, "GNU C", 5) && !strncmp(lang_hooks.name, "GNU C+", 6)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 		inform(UNKNOWN_LOCATION, G_("%s supports C only, not %s"), plugin_name, lang_hooks.name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 		enable = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	for (i = 0; i < argc; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 		if (!strcmp(argv[i].key, "disable")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 			enable = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 		if (!strcmp(argv[i].key, "verbose")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 			verbose = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 		if (!strcmp(argv[i].key, "byref")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 			byref = BYREF_STRUCT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 		if (!strcmp(argv[i].key, "byref-all")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 			byref = BYREF_ALL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 		error(G_("unknown option '-fplugin-arg-%s-%s'"), plugin_name, argv[i].key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	register_callback(plugin_name, PLUGIN_INFO, NULL, &structleak_plugin_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	if (enable) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 		register_callback(plugin_name, PLUGIN_PASS_MANAGER_SETUP, NULL, &structleak_pass_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 		register_callback(plugin_name, PLUGIN_FINISH_TYPE, finish_type, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	register_callback(plugin_name, PLUGIN_ATTRIBUTES, register_attributes, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) }