osprey-gcc-4.2.0/gcc/except.c File Reference

#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "rtl.h"
#include "tree.h"
#include "flags.h"
#include "function.h"
#include "expr.h"
#include "libfuncs.h"
#include "insn-config.h"
#include "except.h"
#include "integrate.h"
#include "hard-reg-set.h"
#include "basic-block.h"
#include "output.h"
#include "dwarf2asm.h"
#include "dwarf2out.h"
#include "dwarf2.h"
#include "toplev.h"
#include "hashtab.h"
#include "intl.h"
#include "ggc.h"
#include "tm_p.h"
#include "target.h"
#include "langhooks.h"
#include "cgraph.h"
#include "diagnostic.h"
#include "tree-pass.h"
#include "timevar.h"
#include "gt-except.h"

Include dependency graph for except.c:

Define Documentation

#define EH_RETURN_DATA_REGNO ( N ) INVALID_REGNUM

Definition at line 84 of file except.c.

#define REMAP ( REG )

Value:

(REG) = VEC_index (eh_region, cfun->eh->region_array, \
         (REG)->region_number + eh_offset)

Referenced by duplicate_eh_regions().

Typedef Documentation

typedef struct eh_region* eh_region

Definition at line 202 of file except.c.

Enumeration Type Documentation

enum reachable_code

Enumerator:

RNL_NOT_CAUGHT
RNL_MAYBE_CAUGHT
RNL_CAUGHT
RNL_BLOCKED
RNL_NOT_CAUGHT
RNL_MAYBE_CAUGHT
RNL_CAUGHT
RNL_BLOCKED
RNL_NOT_CAUGHT
RNL_MAYBE_CAUGHT
RNL_CAUGHT
RNL_BLOCKED
RNL_NOT_CAUGHT
RNL_MAYBE_CAUGHT
RNL_CAUGHT
RNL_BLOCKED

Definition at line 290 of file except.c.

Function Documentation

static int action_record_eq	(	const void *	pentry,
		const void *	pdata
	)			`[static]`

Definition at line 3056 of file except.c.

References action_record::filter, and action_record::next.

static hashval_t action_record_hash ( const void * pentry ) [static]

Definition at line 3064 of file except.c.

References action_record::filter, and action_record::next.

static int add_action_record	(	htab_t	ar_hash,
		int	filter,
		int	next
	)			`[static]`

Definition at line 3071 of file except.c.

References cfun, action_record::filter, htab_find_slot(), INSERT, action_record::next, NULL, push_sleb128(), tmp, VARRAY_ACTIVE_SIZE, and xmalloc().

static int add_call_site	(	rtx	landing_pad,
		int	action
	)			`[static]`

Definition at line 3213 of file except.c.

References cfun, ggc_realloc, and size.

static void add_ehl_entry	(	rtx	label,
		struct eh_region *	region
	)			`[static]`

Definition at line 775 of file except.c.

References cfun, gcc_assert, ggc_alloc, htab_find_slot(), INSERT, and LABEL_PRESERVE_P.

static int add_ehspec_entry	(	htab_t	ehspec_hash,
		htab_t	ttypes_hash,
		tree	list
	)			`[static]`

Definition at line 1253 of file except.c.

References add_ttypes_entry(), gcc_target::arm_eabi_unwinder, cfun, htab_find_slot(), INSERT, n, NULL, NULL_TREE, push_uleb128(), targetm, TREE_CHAIN, TREE_VALUE, VARRAY_ACTIVE_SIZE, VARRAY_PUSH_TREE, VARRAY_PUSH_UCHAR, and XNEW.

static void add_reachable_handler	(	struct reachable_info *	info,
		struct eh_region *	lp_region,
		struct eh_region *	region
	)			`[static]`

Definition at line 2381 of file except.c.

References reachable_info::callback, reachable_info::callback_data, cfun, and reachable_info::saw_any_handlers.

static int add_ttypes_entry	(	htab_t	ttypes_hash,
		tree	type
	)			`[static]`

Definition at line 1227 of file except.c.

References cfun, htab_find_slot_with_hash(), INSERT, n, NULL, TREE_HASH, VEC_length, VEC_safe_push, and XNEW.

static void add_type_for_runtime ( tree type ) [static]

Definition at line 1142 of file except.c.

References htab_find_slot_with_hash(), INSERT, NULL, NULL_TREE, runtime, tree_cons, and TREE_HASH.

static void arh_to_label	(	struct eh_region *	region,
		void *	data
	)			`[static]`

Definition at line 2623 of file except.c.

References alloc_INSN_LIST().

static void arh_to_landing_pad	(	struct eh_region *	region,
		void *	data
	)			`[static]`

Definition at line 2615 of file except.c.

References alloc_INSN_LIST(), and NULL_RTX.

static void assign_filter_values ( void ) [static]

Definition at line 1299 of file except.c.

References add_ehspec_entry(), add_ttypes_entry(), gcc_target::arm_eabi_unwinder, build_int_cst(), cfun, ehspec_filter_eq(), ehspec_filter_hash(), free(), htab_create(), htab_delete(), i, NULL, NULL_TREE, r, targetm, TREE_CHAIN, tree_cons, TREE_VALUE, ttypes_filter_eq(), ttypes_filter_hash(), VARRAY_TREE_INIT, VARRAY_UCHAR_INIT, VEC_alloc, and VEC_index.

static void build_post_landing_pads ( void ) [static]

Definition at line 1404 of file except.c.

References c, cfun, gcc_target::eh_return_filter_mode, emit_barrier(), emit_cmp_and_jump_insns(), emit_jump(), emit_jump_insn(), emit_label(), emit_to_new_bb_before(), end_sequence(), EQ, gcc_unreachable, GEN_INT, gen_label_rtx(), gen_rtx_RESX, get_insns(), i, NULL, NULL_RTX, region, start_sequence(), targetm, TREE_CHAIN, tree_low_cst(), TREE_VALUE, and VEC_index.

bool can_throw_external ( rtx insn )

Definition at line 2749 of file except.c.

References CALL_P, can_throw_external(), can_throw_external_1(), cfun, find_reg_note(), flag_non_call_exceptions, GET_CODE, i, INSN_P, INTVAL, JUMP_P, may_trap_p(), NEXT_INSN, NONJUMP_INSN_P, NULL, NULL_RTX, NULL_TREE, PATTERN, reachable_next_level(), REG_EH_REGION, region, RNL_CAUGHT, sub, XEXP, XINT, and XVECEXP.

bool can_throw_external_1	(	int	region_number,
		bool	is_resx
	)

Definition at line 2723 of file except.c.

References cfun, NULL, NULL_TREE, reachable_next_level(), region, RNL_CAUGHT, and VEC_index.

bool can_throw_internal ( rtx insn )

Definition at line 2695 of file except.c.

References can_throw_internal(), can_throw_internal_1(), cfun, find_reg_note(), GET_CODE, how, i, INSN_P, INTVAL, JUMP_P, NEXT_INSN, NONJUMP_INSN_P, NULL_RTX, NULL_TREE, PATTERN, reachable_next_level(), REG_EH_REGION, region, RNL_BLOCKED, RNL_NOT_CAUGHT, sub, XEXP, XINT, and XVECEXP.

bool can_throw_internal_1	(	int	region_number,
		bool	is_resx
	)

Definition at line 2663 of file except.c.

References cfun, how, NULL_TREE, reachable_next_level(), region, RNL_BLOCKED, RNL_NOT_CAUGHT, and VEC_index.

static int check_handled	(	tree	handled,
		tree	type
	)			`[static]`

Definition at line 2351 of file except.c.

References lang_eh_type_covers, TREE_CHAIN, and TREE_VALUE.

void collect_eh_region_array ( void )

Definition at line 632 of file except.c.

References cfun, ggc_alloc_cleared, i, NULL, VEC_replace, and VEC_safe_grow.

static int collect_one_action_chain	(	htab_t	ar_hash,
		struct eh_region *	region
	)			`[static]`

Definition at line 3102 of file except.c.

References add_action_record(), c, collect_one_action_chain(), filter(), gcc_unreachable, next, NULL, TREE_CHAIN, TREE_INT_CST_LOW, and TREE_VALUE.

static void connect_post_landing_pads ( void ) [static]

Definition at line 1524 of file except.c.

References BARRIER_P, BLOCK_FOR_INSN, cfun, basic_block_def::count, delete_insn(), delete_insns_since(), dest, EDGE_COUNT, EDGE_SUCC, emit_insn_before(), emit_jump(), emit_library_call(), end_sequence(), gcc_assert, get_insns(), i, INSN_DELETED_P, last_call_insn(), LCT_THROW, make_edge(), NEXT_INSN, NULL, ptr_mode, REG_BR_PROB_BASE, region, remove_edge(), remove_eh_handler(), src, start_sequence(), unwind_resume_libfunc, and VEC_index.

void convert_from_eh_region_ranges ( void )

Definition at line 753 of file except.c.

References cfun, collect_eh_region_array(), convert_from_eh_region_ranges_1(), DECL_RTL_IF_SET, free(), get_insns(), i, insns, n, region, remove_fixup_regions(), remove_unreachable_regions(), resolve_fixup_regions(), stack, VEC_index, and xmalloc().

unsigned int convert_to_eh_region_ranges ( void )

Definition at line 3240 of file except.c.

References action_record_eq(), action_record_hash(), add_call_site(), CALL_P, cfun, collect_one_action_chain(), emit_note_after(), emit_note_before(), find_reg_note(), flag_non_call_exceptions, free(), GET_CODE, get_insns(), htab_create(), htab_delete(), insn, INSN_P, INTVAL, iter, may_trap_p(), NEXT_INSN, NONJUMP_INSN_P, NOTE_EH_HANDLER, NOTE_INSN_EH_REGION_BEG, NOTE_INSN_EH_REGION_END, NULL, NULL_RTX, o, PATTERN, REG_EH_REGION, region, USING_SJLJ_EXCEPTIONS, VARRAY_UCHAR_INIT, VEC_index, XEXP, and XVECEXP.

bool current_function_has_exception_handlers ( void )

Definition at line 842 of file except.c.

References cfun, i, region, and VEC_index.

DEF_VEC_ALLOC_P	(	eh_region	,
		gc
	)

DEF_VEC_P ( eh_region )

void default_init_unwind_resume_libfunc ( void )

Definition at line 3941 of file except.c.

References init_one_libfunc(), unwind_resume_libfunc, and USING_SJLJ_EXCEPTIONS.

Referenced by c_maybe_initialize_eh(), and init_exception_processing().

int doing_eh ( int do_warn )

Definition at line 330 of file except.c.

References error(), and flag_exceptions.

void dump_eh_tree	(	FILE *	out,
		struct function *	fun
	)

Definition at line 3807 of file except.c.

References fprintf(), i, NULL, and print_generic_expr().

Referenced by dump_function_to_file(), and verify_eh_tree().

int duplicate_eh_regions	(	struct function *	ifun,
		duplicate_eh_regions_map	map,
		void *	data,
		int	copy_region,
		int	outer_region
	)

Definition at line 921 of file except.c.

References cfun, cur, duplicate_eh_regions_0(), duplicate_eh_regions_1(), i, INT_MAX, map, max_region, memset, n, NULL, num_regions, REMAP, VEC_address, VEC_index, VEC_iterate, VEC_replace, and VEC_safe_grow.

static void duplicate_eh_regions_0	(	eh_region	o,
		int *	min,
		int *	max
	)			`[static]`

Definition at line 864 of file except.c.

Referenced by duplicate_eh_regions().

static eh_region duplicate_eh_regions_1	(	eh_region	old,
		eh_region	outer,
		int	eh_offset
	)			`[static]`

Definition at line 888 of file except.c.

References cfun, gcc_assert, ggc_alloc, n, NULL, ret, and VEC_replace.

Referenced by duplicate_eh_regions().

static void dw2_build_landing_pads ( void ) [static]

Definition at line 1601 of file except.c.

References cfun, basic_block_def::count, EDGE_FALLTHRU, EH_RETURN_DATA_REGNO, gcc_target::eh_return_filter_mode, emit_insn(), emit_label(), emit_move_insn(), emit_to_new_bb_before(), end_sequence(), gen_exception_receiver(), gen_label_rtx(), gen_rtx_REG(), get_insns(), HAVE_exception_receiver, i, make_edge(), basic_block_def::next_bb, ptr_mode, REG_BR_PROB_BASE, region, start_sequence(), targetm, and VEC_index.

static void dw2_output_call_site_table ( void ) [static]

Definition at line 3451 of file except.c.

References ASM_GENERATE_INTERNAL_LABEL, cfun, CODE_LABEL_NUMBER, cs, current_function_func_begin_label, dw2_asm_output_data(), dw2_asm_output_data_uleb128(), dw2_asm_output_delta(), dw2_asm_output_delta_uleb128(), i, and n.

static int dw2_size_of_call_site_table ( void ) [static]

Definition at line 3417 of file except.c.

References cfun, cs, i, n, size, and size_of_uleb128().

bool eh_region_outer_p	(	struct function *	ifun,
		int	region_a,
		int	region_b
	)

Definition at line 1060 of file except.c.

References gcc_assert, NULL, and VEC_index.

int eh_region_outermost	(	struct function *	ifun,
		int	region_a,
		int	region_b
	)

Definition at line 1087 of file except.c.

References gcc_assert, NULL, sbitmap_alloc(), sbitmap_free, sbitmap_zero(), SET_BIT, TEST_BIT, and VEC_index.

Referenced by find_outermost_region_in_block().

static int ehl_eq	(	const void *	pentry,
		const void *	pdata
	)			`[static]`

Definition at line 2140 of file except.c.

static hashval_t ehl_hash ( const void * pentry ) [static]

Definition at line 2130 of file except.c.

References CODE_LABEL_NUMBER.

static int ehspec_filter_eq	(	const void *	pentry,
		const void *	pdata
	)			`[static]`

Definition at line 1201 of file except.c.

References type_list_equal().

static hashval_t ehspec_filter_hash ( const void * pentry ) [static]

Definition at line 1212 of file except.c.

References h, TREE_CHAIN, TREE_HASH, and TREE_VALUE.

static basic_block emit_to_new_bb_before	(	rtx	seq,
		rtx	insn
	)			`[static]`

Definition at line 1376 of file except.c.

References BARRIER_P, BB_SUPERBLOCK, BLOCK_FOR_INSN, create_basic_block(), EDGE_FALLTHRU, ei_next(), ei_safe_edge(), ei_start, emit_insn_before(), edge::flags, basic_block_def::flags, force_nonfallthru(), last, preds, PREV_INSN, and update_bb_for_insn().

void expand_builtin_eh_return	(	tree stackadj_tree	ATTRIBUTE_UNUSED,
		tree	handler_tree
	)

Definition at line 2951 of file except.c.

References cfun, convert_memory_address(), copy_to_reg(), emit_jump(), emit_move_insn(), expand_expr(), gen_label_rtx(), Pmode, and tmp.

rtx expand_builtin_eh_return_data_regno ( tree arglist )

Definition at line 2872 of file except.c.

References constm1_rtx, DBX_REGISTER_NUMBER, DWARF_FRAME_REGNUM, EH_RETURN_DATA_REGNO, error(), GEN_INT, HOST_WIDE_INT, INVALID_REGNUM, TREE_CODE, tree_low_cst(), and TREE_VALUE.

rtx expand_builtin_extend_pointer ( tree addr_tree )

Definition at line 3021 of file except.c.

References addr(), convert_modes(), expand_expr(), NULL_RTX, POINTERS_EXTEND_UNSIGNED, ptr_mode, and word_mode.

rtx expand_builtin_extract_return_addr ( tree addr_tree )

Definition at line 2901 of file except.c.

References addr(), convert_memory_address(), convert_to_mode(), expand_and(), expand_expr(), GET_MODE, MASK_RETURN_ADDR, NULL_RTX, plus_constant, Pmode, and RETURN_ADDR_OFFSET.

rtx expand_builtin_frob_return_addr ( tree addr_tree )

Definition at line 2933 of file except.c.

References addr(), convert_memory_address(), expand_expr(), force_reg(), GET_MODE, NULL_RTX, plus_constant, Pmode, ptr_mode, and RETURN_ADDR_OFFSET.

void expand_builtin_unwind_init ( void )

Definition at line 2860 of file except.c.

References current_function_has_nonlocal_label, and SETUP_FRAME_ADDRESSES.

void expand_eh_return ( void )

Definition at line 2978 of file except.c.

References cfun, clobber_return_register(), const0_rtx, current_function_calls_eh_return, EH_RETURN_HANDLER_RTX, EH_RETURN_STACKADJ_RTX, emit_insn(), emit_jump(), emit_label(), emit_move_insn(), error(), gen_eh_return(), gen_label_rtx(), and HAVE_eh_return.

void expand_resx_expr ( tree exp )

Definition at line 566 of file except.c.

References cfun, emit_barrier(), emit_jump_insn(), gcc_assert, gen_rtx_RESX, TREE_INT_CST_LOW, TREE_OPERAND, and VEC_index.

void find_exception_handler_labels ( void )

Definition at line 798 of file except.c.

References add_ehl_entry(), cfun, ehl_eq(), ehl_hash(), htab_create_ggc, htab_empty(), i, lab, NULL, region, return_label, USING_SJLJ_EXCEPTIONS, and VEC_index.

void finish_eh_generation ( void )

void for_each_eh_label ( void(*)(rtx) callback )

Definition at line 2303 of file except.c.

References callback(), cfun, for_each_eh_label_1(), and htab_traverse().

static int for_each_eh_label_1	(	void **	pentry,
		void *	data
	)			`[static]`

Definition at line 2310 of file except.c.

References callback(), and void.

void for_each_eh_region ( void(*)(struct eh_region *) callback )

Definition at line 2322 of file except.c.

References cfun, i, n, region, and VEC_index.

void foreach_reachable_handler	(	int	region_number,
		bool	is_resx,
		void()(struct eh_region , void *)	callback,
		void *	callback_data
	)

Definition at line 2567 of file except.c.

References callback(), reachable_info::callback, reachable_info::callback_data, cfun, memset, NULL, NULL_TREE, reachable_next_level(), region, RNL_CAUGHT, and VEC_index.

static bool gate_handle_eh ( void ) [static]

Definition at line 3951 of file except.c.

References doing_eh().

static struct eh_region* gen_eh_region	(	enum eh_region_type	type,
		struct eh_region *	outer
	)			`[static, read]`

Definition at line 449 of file except.c.

References cfun, doing_eh(), gcc_assert, and ggc_alloc_cleared.

struct eh_region* gen_eh_region_allowed	(	struct eh_region *	outer,
		tree	allowed
	)			`[read]`

Definition at line 524 of file except.c.

References add_type_for_runtime(), gen_eh_region(), region, TREE_CHAIN, and TREE_VALUE.

struct eh_region* gen_eh_region_catch	(	struct eh_region *	t,
		tree	type_or_list
	)			`[read]`

Definition at line 492 of file except.c.

References add_type_for_runtime(), c, gen_eh_region(), NULL_TREE, TREE_CHAIN, TREE_CODE, tree_cons, and TREE_VALUE.

struct eh_region* gen_eh_region_cleanup	(	struct eh_region *	outer,
		struct eh_region *	prev_try
	)			`[read]`

Definition at line 478 of file except.c.

References cleanup(), and gen_eh_region().

struct eh_region* gen_eh_region_must_not_throw ( struct eh_region * outer ) [read]

Definition at line 536 of file except.c.

References gen_eh_region().

struct eh_region* gen_eh_region_try ( struct eh_region * outer ) [read]

Definition at line 486 of file except.c.

References gen_eh_region().

bool get_eh_region_may_contain_throw ( struct eh_region * region )

Definition at line 548 of file except.c.

int get_eh_region_number ( struct eh_region * region )

Definition at line 542 of file except.c.

tree get_eh_region_tree_label ( struct eh_region * region )

Definition at line 554 of file except.c.

htab_t get_eh_throw_stmt_table ( struct function * fun ) [read]

Definition at line 3800 of file except.c.

Referenced by add_stmt_to_eh_region_fn(), lookup_stmt_eh_region_fn(), and remove_stmt_from_eh_region_fn().

rtx get_exception_filter ( struct function * fun )

Definition at line 616 of file except.c.

References cfun, gcc_target::eh_return_filter_mode, filter(), gen_reg_rtx(), and targetm.

rtx get_exception_pointer ( struct function * fun )

Definition at line 601 of file except.c.

References cfun, gen_reg_rtx(), and ptr_mode.

struct ehl_map_entry GTY ( () ) [read, write]

Definition at line 100 of file except.c.

References region.

void init_eh ( void )

void init_eh_for_function ( void )

Definition at line 439 of file except.c.

References cfun, and ggc_alloc_cleared.

static tree lookup_type_for_runtime ( tree type ) [static]

Definition at line 1156 of file except.c.

References htab_find_slot_with_hash(), NO_INSERT, TREE_HASH, and TREE_VALUE.

void maybe_remove_eh_handler ( rtx label )

Definition at line 2265 of file except.c.

References cfun, htab_clear_slot(), htab_find_slot(), NO_INSERT, NULL_RTX, region, remove_eh_handler(), and tmp.

void note_current_region_may_contain_throw ( void )

Definition at line 591 of file except.c.

References cfun, and note_eh_region_may_contain_throw().

void note_eh_region_may_contain_throw ( struct eh_region * region )

Definition at line 581 of file except.c.

void output_function_exception_table ( void )

Definition at line 3605 of file except.c.

References gcc_target::arm_eabi_unwinder, ASM_GENERATE_INTERNAL_LABEL, gcc_target::asm_out, asm_out_file, ASM_OUTPUT_INTERNAL_LABEL, ASM_OUTPUT_LABEL, ASM_PREFERRED_EH_DATA_FORMAT, assemble_align(), assemble_external_libcall(), assemble_integer(), BITS_PER_UNIT, cfun, current_function_decl, current_function_funcdef_no, current_function_section(), dw2_asm_output_data(), dw2_asm_output_data_uleb128(), dw2_asm_output_delta_uleb128(), dw2_asm_output_encoded_addr_rtx(), dw2_output_call_site_table(), dw2_size_of_call_site_table(), DW_EH_PE_absptr, DW_EH_PE_aligned, DW_EH_PE_omit, DW_EH_PE_udata4, DW_EH_PE_uleb128, eh_data_format_name(), eh_personality_libfunc, gcc_target::asm_out::except_table_label, gcc_target::asm_out::exception_section, expand_expr(), EXPAND_INITIALIZER, fputs(), function_section(), i, integer_zero_node, gcc_target::asm_out::internal_label, lookup_type_for_runtime(), n, NULL, NULL_RTX, NULL_TREE, output_addr_const(), output_ttype(), size_of_encoded_value(), size_of_uleb128(), sjlj_output_call_site_table(), sjlj_size_of_call_site_table(), switch_to_exception_section(), switch_to_section(), targetm, USING_SJLJ_EXCEPTIONS, VARRAY_ACTIVE_SIZE, VARRAY_TREE, VARRAY_UCHAR, VEC_index, and VEC_length.

static void output_ttype	(	tree	type,
		int	tt_format,
		int	tt_format_size
	)			`[static]`

Definition at line 3560 of file except.c.

References gcc_target::asm_out, assemble_integer(), BITS_PER_UNIT, cgraph_varpool_mark_needed_node(), cgraph_varpool_node(), const0_rtx, dw2_asm_output_encoded_addr_rtx(), DW_EH_PE_absptr, DW_EH_PE_aligned, expand_expr(), EXPAND_INITIALIZER, gcc_assert, lookup_type_for_runtime(), node, NULL, NULL_RTX, NULL_TREE, STRIP_NOPS, targetm, TREE_CODE, TREE_OPERAND, TREE_PUBLIC, and gcc_target::asm_out::ttype.

Referenced by output_function_exception_table().

static void push_sleb128	(	varray_type *	data_area,
		int	value
	)			`[static]`

Definition at line 3396 of file except.c.

References VARRAY_PUSH_UCHAR.

static void push_uleb128	(	varray_type *	data_area,
		unsigned int	value
	)			`[static]`

Definition at line 3382 of file except.c.

References VARRAY_PUSH_UCHAR.

rtx reachable_handlers ( rtx insn )

Definition at line 2630 of file except.c.

References arh_to_label(), arh_to_landing_pad(), cfun, find_reg_note(), foreach_reachable_handler(), GET_CODE, INTVAL, JUMP_P, memset, NULL, NULL_RTX, NULL_TREE, PATTERN, reachable_next_level(), REG_EH_REGION, region, RNL_CAUGHT, XEXP, and XINT.

static enum reachable_code reachable_next_level	(	struct eh_region *	region,
		tree	type_thrown,
		struct reachable_info *	info
	)			`[static]`

Definition at line 2401 of file except.c.

References add_reachable_handler(), c, cfun, check_handled(), gcc_unreachable, lang_eh_type_covers, NULL, NULL_TREE, ret, RNL_BLOCKED, RNL_CAUGHT, RNL_MAYBE_CAUGHT, RNL_NOT_CAUGHT, reachable_info::saw_any_handlers, TREE_CHAIN, tree_cons, TREE_VALUE, reachable_info::types_allowed, and reachable_info::types_caught.

static void remove_eh_handler ( struct eh_region * region ) [static]

Definition at line 2173 of file except.c.

References BITMAP_GGC_ALLOC, bitmap_ior_into(), bitmap_set_bit(), cfun, EXECUTE_IF_SET_IN_BITMAP, gcc_assert, i, lab, next, p, prev, remove_eh_handler(), remove_exception_handler_label(), try(), and VEC_replace.

static void remove_exception_handler_label ( rtx label ) [static]

Definition at line 2153 of file except.c.

References cfun, gcc_assert, htab_clear_slot(), htab_find_slot(), NO_INSERT, NULL, and tmp.

static void remove_unreachable_regions ( rtx insns ) [static]

Definition at line 670 of file except.c.

References c, cfun, free(), gcc_assert, get_max_uid(), i, insn, INSN_UID, NEXT_INSN, r, remove_eh_handler(), VEC_index, and xcalloc().

static unsigned int rest_of_handle_eh ( void ) [static]

Definition at line 3958 of file except.c.

References cleanup_cfg(), CLEANUP_NO_INSN_DEL, and finish_eh_generation().

void set_eh_region_tree_label	(	struct eh_region *	region,
		tree	lab
	)

Definition at line 560 of file except.c.

void set_eh_throw_stmt_table	(	struct function *	fun,
		struct htab *	table
	)

Definition at line 3794 of file except.c.

Referenced by add_stmt_to_eh_region_fn().

unsigned int set_nothrow_function_flags ( void )

Definition at line 2786 of file except.c.

References CALL_P, can_throw_external(), cfun, current_function_decl, current_function_epilogue_delay_list, current_function_nothrow, DECL_REPLACEABLE_P, flag_exceptions, GET_CODE, get_insns(), insn, NEXT_INSN, SIBLING_CALL_P, TREE_NOTHROW, and XEXP.

static void sjlj_assign_call_site_values	(	rtx	dispatch_label,
		struct sjlj_lp_info *	lp_info
	)			`[static]`

Definition at line 1713 of file except.c.

References sjlj_lp_info::action_index, action_record_eq(), action_record_hash(), add_call_site(), sjlj_lp_info::call_site_index, cfun, collect_one_action_chain(), sjlj_lp_info::dispatch_index, free(), GEN_INT, htab_create(), htab_delete(), i, index(), r, VARRAY_UCHAR_INIT, and VEC_index.

static void sjlj_build_landing_pads ( void ) [static]

Definition at line 2043 of file except.c.

References assign_stack_local(), cfun, free(), gen_label_rtx(), int_size_in_bytes(), sjlj_assign_call_site_values(), sjlj_emit_dispatch_table(), sjlj_emit_function_enter(), sjlj_emit_function_exit(), sjlj_find_directly_reachable_regions(), sjlj_mark_call_sites(), TYPE_ALIGN, TYPE_MODE, and XCNEWVEC.

static void sjlj_emit_dispatch_table	(	rtx	dispatch_label,
		struct sjlj_lp_info *	lp_info
	)			`[static]`

Definition at line 1971 of file except.c.

References adjust_address, before, cfun, convert_memory_address(), convert_to_mode(), copy_to_reg(), basic_block_def::count, EDGE_FALLTHRU, emit_cmp_and_jump_insns(), emit_label(), emit_move_insn(), emit_to_new_bb_before(), end_sequence(), EQ, expand_builtin_setjmp_receiver(), GEN_INT, get_insns(), i, integer_type_node, make_edge(), mem, basic_block_def::next_bb, NULL_RTX, ptr_mode, REG_BR_PROB_BASE, start_sequence(), TYPE_MODE, UNITS_PER_WORD, VEC_index, and word_mode.

static void sjlj_emit_function_enter ( rtx dispatch_label ) [static]

Definition at line 1840 of file except.c.

References adjust_address, ASM_GENERATE_INTERNAL_LABEL, assemble_external_libcall(), buf, cfun, const0_rtx, current_function_funcdef_no, eh_personality_libfunc, emit_cmp_and_jump_insns(), emit_insn_after(), emit_library_call(), emit_library_call_value(), emit_move_insn(), emit_note(), end_sequence(), ENTRY_BLOCK_PTR, expand_builtin_setjmp_setup(), gen_rtx_EQ, gen_rtx_SYMBOL_REF, get_insns(), ggc_strdup, insert_insn_on_edge(), integer_type_node, LCT_NORMAL, LCT_RETURNS_TWICE, mem, NE, NEXT_INSN, NOTE_EXPECTED_VALUE, NOTE_INSN_BASIC_BLOCK, NOTE_INSN_EXPECTED_VALUE, NOTE_INSN_FUNCTION_BEG, NOTE_LINE_NUMBER, NOTE_P, NULL_RTX, plus_constant, Pmode, setjmp_libfunc, single_succ_edge(), start_sequence(), sym, SYMBOL_FLAG_LOCAL, SYMBOL_REF_FLAGS, TYPE_MODE, unwind_sjlj_register_libfunc, x, and XEXP.

static void sjlj_emit_function_exit ( void ) [static]

Definition at line 1925 of file except.c.

References BB_END, BB_HEAD, cfun, EDGE_FALLTHRU, emit_insn_after(), emit_library_call(), end_sequence(), EXIT_BLOCK_PTR, edge::flags, FOR_EACH_EDGE, gcc_assert, get_insns(), insert_insn_on_edge(), insn, LABEL_P, LCT_NORMAL, NEXT_INSN, Pmode, edge::src, start_sequence(), unwind_sjlj_unregister_libfunc, and XEXP.

void sjlj_emit_function_exit_after ( rtx after )

Definition at line 1919 of file except.c.

References cfun.

static bool sjlj_find_directly_reachable_regions ( struct sjlj_lp_info * lp_info ) [static]

Definition at line 1665 of file except.c.

References cfun, sjlj_lp_info::directly_reachable, find_reg_note(), get_insns(), insn, INSN_P, INTVAL, NEXT_INSN, NULL, NULL_RTX, NULL_TREE, rc, reachable_next_level(), REG_EH_REGION, region, RNL_CAUGHT, RNL_MAYBE_CAUGHT, RNL_NOT_CAUGHT, VEC_index, and XEXP.

static void sjlj_mark_call_sites ( struct sjlj_lp_info * lp_info ) [static]

Definition at line 1776 of file except.c.

References adjust_address, before, CALL_P, sjlj_lp_info::call_site_index, cfun, emit_insn_before(), emit_move_insn(), end_sequence(), find_first_parameter_load(), find_reg_note(), flag_non_call_exceptions, GEN_INT, get_insns(), insn, INSN_P, integer_type_node, INTVAL, LABEL_P, may_trap_p(), mem, NEXT_INSN, NULL_RTX, p, PATTERN, REG_EH_REGION, region, start_sequence(), TYPE_MODE, VEC_index, and XEXP.

static void sjlj_output_call_site_table ( void ) [static]

Definition at line 3505 of file except.c.

References cfun, cs, dw2_asm_output_data_uleb128(), i, INTVAL, and n.

static int sjlj_size_of_call_site_table ( void ) [static]

Definition at line 3433 of file except.c.

References cfun, cs, i, INTVAL, n, size, and size_of_uleb128().

static void switch_to_exception_section ( void ) [static]

Definition at line 3526 of file except.c.

References ASM_PREFERRED_EH_DATA_FORMAT, data_section(), DW_EH_PE_absptr, DW_EH_PE_aligned, EH_TABLES_CAN_BE_READ_ONLY, flag_pic, flags, get_section(), gcc_target::have_named_sections, NULL, readonly_data_section(), SECTION_WRITE, switch_to_section(), and targetm.

Referenced by output_function_exception_table().

static int t2r_eq	(	const void *	pentry,
		const void *	pdata
	)			`[static]`

Definition at line 1126 of file except.c.

References TREE_PURPOSE.

static hashval_t t2r_hash ( const void * pentry ) [static]

Definition at line 1135 of file except.c.

References TREE_HASH, and TREE_PURPOSE.

static int ttypes_filter_eq	(	const void *	pentry,
		const void *	pdata
	)			`[static]`

Definition at line 1180 of file except.c.

static hashval_t ttypes_filter_hash ( const void * pentry ) [static]

Definition at line 1189 of file except.c.

References TREE_HASH.

void verify_eh_tree ( struct function * fun )

Definition at line 3853 of file except.c.

References cfun, count, dump_eh_tree(), err, error(), i, internal_error(), NULL, and VEC_index.

Variable Documentation

tree(* lang_eh_runtime_type)(tree)

int(* lang_eh_type_covers)(tree a, tree b)

tree(* lang_protect_cleanup_actions)(void)

struct tree_opt_pass pass_convert_to_eh_region_ranges

Initial value:

{
  "eh-ranges",                          
  NULL,                                 
  convert_to_eh_region_ranges,          
  NULL,                                 
  NULL,                                 
  0,                                    
  0,                                    
  0,                                    
  0,                                    
  0,                                    
  0,                                    
  TODO_dump_func,     
  0                                     
}

Definition at line 3363 of file except.c.

Referenced by init_optimization_passes().

struct tree_opt_pass pass_rtl_eh

Initial value:

{
  "eh",                                 
  gate_handle_eh,                       
  rest_of_handle_eh,      
  NULL,                                 
  NULL,                                 
  0,                                    
  TV_JUMP,                              
  0,                                    
  0,                                    
  0,                                    
  0,                                    
  TODO_dump_func,                       
  'h'                                   
}

Definition at line 3966 of file except.c.

Referenced by init_optimization_passes().

struct tree_opt_pass pass_set_nothrow_function_flags

Initial value:

{
  NULL,                                 
  NULL,                                 
  set_nothrow_function_flags,           
  NULL,                                 
  NULL,                                 
  0,                                    
  0,                                    
  0,                                    
  0,                                    
  0,                                    
  0,                                    
  0,                                    
  0                                     
}

Definition at line 2836 of file except.c.

Referenced by init_optimization_passes().


Data Types
type	sjlj_lp_info
type	reachable_info
type	action_record
Defines
#define	EH_RETURN_DATA_REGNO(N) INVALID_REGNUM
#define	REMAP(REG)
Typedefs
typedef struct eh_region *	eh_region
Enumerations
enum	reachable_code { RNL_NOT_CAUGHT, RNL_MAYBE_CAUGHT, RNL_CAUGHT, RNL_BLOCKED, RNL_NOT_CAUGHT, RNL_MAYBE_CAUGHT, RNL_CAUGHT, RNL_BLOCKED, RNL_NOT_CAUGHT, RNL_MAYBE_CAUGHT, RNL_CAUGHT, RNL_BLOCKED, RNL_NOT_CAUGHT, RNL_MAYBE_CAUGHT, RNL_CAUGHT, RNL_BLOCKED }
Functions/Subroutines
struct ehl_map_entry	GTY (())
	DEF_VEC_P (eh_region)
	DEF_VEC_ALLOC_P (eh_region, gc)
static int	t2r_eq (const void , const void )
static hashval_t	t2r_hash (const void *)
static void	add_type_for_runtime (tree)
static tree	lookup_type_for_runtime (tree)
static void	remove_unreachable_regions (rtx)
static int	ttypes_filter_eq (const void , const void )
static hashval_t	ttypes_filter_hash (const void *)
static int	ehspec_filter_eq (const void , const void )
static hashval_t	ehspec_filter_hash (const void *)
static int	add_ttypes_entry (htab_t, tree)
static int	add_ehspec_entry (htab_t, htab_t, tree)
static void	assign_filter_values (void)
static void	build_post_landing_pads (void)
static void	connect_post_landing_pads (void)
static void	dw2_build_landing_pads (void)
static bool	sjlj_find_directly_reachable_regions (struct sjlj_lp_info *)
static void	sjlj_assign_call_site_values (rtx, struct sjlj_lp_info *)
static void	sjlj_mark_call_sites (struct sjlj_lp_info *)
static void	sjlj_emit_function_enter (rtx)
static void	sjlj_emit_function_exit (void)
static void	sjlj_emit_dispatch_table (rtx, struct sjlj_lp_info *)
static void	sjlj_build_landing_pads (void)
static hashval_t	ehl_hash (const void *)
static int	ehl_eq (const void , const void )
static void	add_ehl_entry (rtx, struct eh_region *)
static void	remove_exception_handler_label (rtx)
static void	remove_eh_handler (struct eh_region *)
static int	for_each_eh_label_1 (void *, void )
static enum reachable_code	reachable_next_level (struct eh_region , tree, struct reachable_info )
static int	action_record_eq (const void , const void )
static hashval_t	action_record_hash (const void *)
static int	add_action_record (htab_t, int, int)
static int	collect_one_action_chain (htab_t, struct eh_region *)
static int	add_call_site (rtx, int)
static void	push_uleb128 (varray_type *, unsigned int)
static void	push_sleb128 (varray_type *, int)
static int	dw2_size_of_call_site_table (void)
static int	sjlj_size_of_call_site_table (void)
static void	dw2_output_call_site_table (void)
static void	sjlj_output_call_site_table (void)
int	doing_eh (int do_warn)
void	init_eh (void)
void	init_eh_for_function (void)
static struct eh_region *	gen_eh_region (enum eh_region_type type, struct eh_region *outer)
struct eh_region *	gen_eh_region_cleanup (struct eh_region outer, struct eh_region prev_try)
struct eh_region *	gen_eh_region_try (struct eh_region *outer)
struct eh_region *	gen_eh_region_catch (struct eh_region *t, tree type_or_list)
struct eh_region *	gen_eh_region_allowed (struct eh_region *outer, tree allowed)
struct eh_region *	gen_eh_region_must_not_throw (struct eh_region *outer)
int	get_eh_region_number (struct eh_region *region)
bool	get_eh_region_may_contain_throw (struct eh_region *region)
tree	get_eh_region_tree_label (struct eh_region *region)
void	set_eh_region_tree_label (struct eh_region *region, tree lab)
void	expand_resx_expr (tree exp)
void	note_eh_region_may_contain_throw (struct eh_region *region)
void	note_current_region_may_contain_throw (void)
rtx	get_exception_pointer (struct function *fun)
rtx	get_exception_filter (struct function *fun)
void	collect_eh_region_array (void)
void	convert_from_eh_region_ranges (void)
void	find_exception_handler_labels (void)
bool	current_function_has_exception_handlers (void)
static void	duplicate_eh_regions_0 (eh_region o, int min, int max)
static eh_region	duplicate_eh_regions_1 (eh_region old, eh_region outer, int eh_offset)
int	duplicate_eh_regions (struct function ifun, duplicate_eh_regions_map map, void data, int copy_region, int outer_region)
bool	eh_region_outer_p (struct function *ifun, int region_a, int region_b)
int	eh_region_outermost (struct function *ifun, int region_a, int region_b)
static basic_block	emit_to_new_bb_before (rtx seq, rtx insn)
void	sjlj_emit_function_exit_after (rtx after)
void	finish_eh_generation (void)
void	maybe_remove_eh_handler (rtx label)
void	for_each_eh_label (void(*callback)(rtx))
void	for_each_eh_region (void(callback)(struct eh_region ))
static int	check_handled (tree handled, tree type)
static void	add_reachable_handler (struct reachable_info info, struct eh_region lp_region, struct eh_region *region)
void	foreach_reachable_handler (int region_number, bool is_resx, void(callback)(struct eh_region , void ), void callback_data)
static void	arh_to_landing_pad (struct eh_region region, void data)
static void	arh_to_label (struct eh_region region, void data)
rtx	reachable_handlers (rtx insn)
bool	can_throw_internal_1 (int region_number, bool is_resx)
bool	can_throw_internal (rtx insn)
bool	can_throw_external_1 (int region_number, bool is_resx)
bool	can_throw_external (rtx insn)
unsigned int	set_nothrow_function_flags (void)
void	expand_builtin_unwind_init (void)
rtx	expand_builtin_eh_return_data_regno (tree arglist)
rtx	expand_builtin_extract_return_addr (tree addr_tree)
rtx	expand_builtin_frob_return_addr (tree addr_tree)
void	expand_builtin_eh_return (tree stackadj_tree ATTRIBUTE_UNUSED, tree handler_tree)
void	expand_eh_return (void)
rtx	expand_builtin_extend_pointer (tree addr_tree)
unsigned int	convert_to_eh_region_ranges (void)
static void	switch_to_exception_section (void)
static void	output_ttype (tree type, int tt_format, int tt_format_size)
void	output_function_exception_table (void)
void	set_eh_throw_stmt_table (struct function fun, struct htab table)
htab_t	get_eh_throw_stmt_table (struct function *fun)
void	dump_eh_tree (FILE out, struct function fun)
void	verify_eh_tree (struct function *fun)
void	default_init_unwind_resume_libfunc (void)
static bool	gate_handle_eh (void)
static unsigned int	rest_of_handle_eh (void)
Variables
tree(*	lang_protect_cleanup_actions )(void)
int(*	lang_eh_type_covers )(tree a, tree b)
tree(*	lang_eh_runtime_type )(tree)
struct tree_opt_pass	pass_set_nothrow_function_flags
struct tree_opt_pass	pass_convert_to_eh_region_ranges
struct tree_opt_pass	pass_rtl_eh

osprey-gcc-4.2.0/gcc/except.c File Reference

Data Types

Defines

Typedefs

Enumerations

Functions/Subroutines

Variables

Define Documentation

Typedef Documentation

Enumeration Type Documentation

Function Documentation

Variable Documentation