gcc/gcc/except.h

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1996-07-23 22:20:04 +02:00
/* Exception Handling interface routines.
Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001
Free Software Foundation, Inc.
1996-07-23 22:20:04 +02:00
Contributed by Mike Stump <mrs@cygnus.com>.
This file is part of GNU CC.
GNU CC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef TREE_CODE
union tree_node;
#define tree union tree_node *
#endif
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#ifndef RTX_CODE
struct rtx_def;
#define rtx struct rtx_def *
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#endif
#ifndef _VARRAY_H_
struct varray_head_tag;
#define varray_type struct varray_head_tag *
#endif
/* Per-function EH data. Used only in except.c, but GC and others
manipulate pointers to the opaque type. */
struct eh_status;
/* Internal structure describing a region. */
struct eh_region;
except.c (func_eh_entry): Add emitted field. 2000-05-25 Andrew MacLeod <amacleod@cygnus.com> Andrew Haley <aph@cygnus.com> * except.c (func_eh_entry): Add emitted field. (new_eh_region_entry): Set emitted field to 0; (output_exception_table_entry): Only emit previously un-emitted data, and send it to the eh_data section. (output_exception_table): Break out common parts. Output exception table for entire compilation unit to eh_data section. (output_exception_table_data): Common parts of output_exception_table. Send output to eh_data section. (output_function_exception_table): Output exception table data for a single function to eh_data section. (free_exception_table): New external to free the table. * except.h (free_exception_table): Add prototype. (output_function_exception_table): Add prototype. * final.c (final_end_function): Output function exception table for IA64_UNWIND_INFO. (final_scan_insn): Emit any unwind directives for an insn. * frame-dwarf2.c: New file containing all DWARF 2 specific code from frame.c. * frame.c: Remove all DWARF 2 specific code. * config/ia64/frame-ia64.c: New file. (gthread_stuff): Make all gthread available with IA64_UNWIND_INFO. (dwarf_fde): Define an IA64 struct for dwarf_fde. (__register_frame_info, __register_frame): Move to common area of file. (__register_frame_info_table, __register_frame_table): Move to common i area. (__deregister_frame_info, __deregister_frame): Move to common area. (__frame_init, find_fde): New versions for IA64_UNWIND_INFO. (read_uleb128): New version for ia64. (get_unwind_record): Read the next IA-64 unwind record. (read_R_record): Read a region header record. (process_a_b_reg_code): X record helper. (read_X_record): Read an X format record. (read_B_record): Read a B format record. (P3_record_types): List of record types matching the P3 format. (P7_record_types): List of record types matching the P7 format. (P8_record_types): List of record types matching the P8 format. (read_P_record): Read a P format record. (init_ia64_reg_loc): Set default fields for a register. (init_ia64_unwind_frame): Set defaults for all register records. (execute_one_ia64_descriptor): Execute one descriptor record. (rse_address_add): Calculate the position of a local reg in memory. (normalize_reg_loc): Turn a location descriptor into a memory address. (maybe_normalize_reg_loc): Only normalize a descriptor if it falls within a specified PC offset range. (get_real_reg_value): Given a register location, retrieve its value. (set_real_reg_value): Change the value of a register location. (copy_reg_value): Copy reg values, if needed. (copy_saved_reg_state): Copy all registers that need to be copied. (process_state_between): Normalize all frame register records that fall within the specified PC range. (frame_translate): Take a processed frame description, and turn everything into addresses. (build_ia64_frame_state ): Find and create frame state record for a PC. (get_personality): Get the personality routine for a given frame. (get_except_table): Get the exception table for a given frame. (record_name): Unwind record names for debugging. (print_record): Print and unwind record. (print_all_records): Print an entire unwind image. (__ia64_backtrace): Print a backtrace. (ia64_backtrace_helper): New function. (__register_frame_info_aux): New function. * config/ia64/crtend.asm (__do_frame_setup_aux): New function. * frame.h (enum unw_record_type): New unwind record types. (struct unw_p_record, unw_b_record, unw_x_record) : New unwind records. (struct unw_r_record, unwind_record): New unwind record structs. (struct unwind_info_ptr): Unwind information layout. (IA64_UNW_LOC_TYPE_*): Macros for different types for location descriptors. (struct ia64_reg_loc): Register location description. (struct ia64_frame_state): Location of all registers in a frame. (struct object): Add pc_base and fde_end for IA64_UNWIND_INFO. * libgcc2.c (__ia64_personality_v1): Personality routine. (__calc_caller_bsp): Calculate the bsp register for the caller's frame. (ia64_throw_helper): Figure out who to return to and set up the registers. (__throw): Throw routine. * output.h (assemble_eh_align, assemble_eh_label): New functions to generate EH info where we want it. (assemble_eh_integer): New function. * toplev.c (compile_file): Output module level exception table for non-ia64 targets. (main): Set exceptions_via_longjump and flag_new_exceptions based on IA64_UNWIND_INFO too. * varasm.c (assemble_eh_label): Generate a label via ASM_OUTPUT_EH_LABEL if it has been specified. (assemble_eh_align): Generate an alignment directive via ASM_OUTPUT_EH_ALIGN if it has been specified. (assemble_eh_label): Generate an integer value via ASM_OUTPUT_EH_type if they have been specified. * config/ia64/ia64.c (rtx_needs_barrier): Add flushrs. (ia64_init_builtins): Add __builtin_ia64_bsp and __builtin_ia64_flushrs. (ia64_expand_builtin): Add IA64_BUILTIN_BSP and IA64_BUILTIN_FLUSHRS. * config/ia64/ia64.h (ia64_builtins): Add IA64_BUILTIN_BSP and IA64_BUILTIN_FLUSHRS. * config/ia64/ia64.md (flushrs): New insn to flush the register stack. Add to unspec list. * config/ia64/crtbegin.asm (frame_object): Change size. (__do_frame_setup_aux): New function. * config/ia64/crtend.asm: call __do_frame_setup_aux. * config/ia64/t-ia64 (LIB2ADDEH): Add. * Makefile.in (LIB2ADDEH): Add. (LIB2ADD): Use LIB2ADDEH. Co-Authored-By: Andrew Haley <aph@cygnus.com> From-SVN: r34169
2000-05-25 17:21:51 +02:00
/* Test: is exception handling turned on? */
extern int doing_eh PARAMS ((int));
except.c (func_eh_entry): Add emitted field. 2000-05-25 Andrew MacLeod <amacleod@cygnus.com> Andrew Haley <aph@cygnus.com> * except.c (func_eh_entry): Add emitted field. (new_eh_region_entry): Set emitted field to 0; (output_exception_table_entry): Only emit previously un-emitted data, and send it to the eh_data section. (output_exception_table): Break out common parts. Output exception table for entire compilation unit to eh_data section. (output_exception_table_data): Common parts of output_exception_table. Send output to eh_data section. (output_function_exception_table): Output exception table data for a single function to eh_data section. (free_exception_table): New external to free the table. * except.h (free_exception_table): Add prototype. (output_function_exception_table): Add prototype. * final.c (final_end_function): Output function exception table for IA64_UNWIND_INFO. (final_scan_insn): Emit any unwind directives for an insn. * frame-dwarf2.c: New file containing all DWARF 2 specific code from frame.c. * frame.c: Remove all DWARF 2 specific code. * config/ia64/frame-ia64.c: New file. (gthread_stuff): Make all gthread available with IA64_UNWIND_INFO. (dwarf_fde): Define an IA64 struct for dwarf_fde. (__register_frame_info, __register_frame): Move to common area of file. (__register_frame_info_table, __register_frame_table): Move to common i area. (__deregister_frame_info, __deregister_frame): Move to common area. (__frame_init, find_fde): New versions for IA64_UNWIND_INFO. (read_uleb128): New version for ia64. (get_unwind_record): Read the next IA-64 unwind record. (read_R_record): Read a region header record. (process_a_b_reg_code): X record helper. (read_X_record): Read an X format record. (read_B_record): Read a B format record. (P3_record_types): List of record types matching the P3 format. (P7_record_types): List of record types matching the P7 format. (P8_record_types): List of record types matching the P8 format. (read_P_record): Read a P format record. (init_ia64_reg_loc): Set default fields for a register. (init_ia64_unwind_frame): Set defaults for all register records. (execute_one_ia64_descriptor): Execute one descriptor record. (rse_address_add): Calculate the position of a local reg in memory. (normalize_reg_loc): Turn a location descriptor into a memory address. (maybe_normalize_reg_loc): Only normalize a descriptor if it falls within a specified PC offset range. (get_real_reg_value): Given a register location, retrieve its value. (set_real_reg_value): Change the value of a register location. (copy_reg_value): Copy reg values, if needed. (copy_saved_reg_state): Copy all registers that need to be copied. (process_state_between): Normalize all frame register records that fall within the specified PC range. (frame_translate): Take a processed frame description, and turn everything into addresses. (build_ia64_frame_state ): Find and create frame state record for a PC. (get_personality): Get the personality routine for a given frame. (get_except_table): Get the exception table for a given frame. (record_name): Unwind record names for debugging. (print_record): Print and unwind record. (print_all_records): Print an entire unwind image. (__ia64_backtrace): Print a backtrace. (ia64_backtrace_helper): New function. (__register_frame_info_aux): New function. * config/ia64/crtend.asm (__do_frame_setup_aux): New function. * frame.h (enum unw_record_type): New unwind record types. (struct unw_p_record, unw_b_record, unw_x_record) : New unwind records. (struct unw_r_record, unwind_record): New unwind record structs. (struct unwind_info_ptr): Unwind information layout. (IA64_UNW_LOC_TYPE_*): Macros for different types for location descriptors. (struct ia64_reg_loc): Register location description. (struct ia64_frame_state): Location of all registers in a frame. (struct object): Add pc_base and fde_end for IA64_UNWIND_INFO. * libgcc2.c (__ia64_personality_v1): Personality routine. (__calc_caller_bsp): Calculate the bsp register for the caller's frame. (ia64_throw_helper): Figure out who to return to and set up the registers. (__throw): Throw routine. * output.h (assemble_eh_align, assemble_eh_label): New functions to generate EH info where we want it. (assemble_eh_integer): New function. * toplev.c (compile_file): Output module level exception table for non-ia64 targets. (main): Set exceptions_via_longjump and flag_new_exceptions based on IA64_UNWIND_INFO too. * varasm.c (assemble_eh_label): Generate a label via ASM_OUTPUT_EH_LABEL if it has been specified. (assemble_eh_align): Generate an alignment directive via ASM_OUTPUT_EH_ALIGN if it has been specified. (assemble_eh_label): Generate an integer value via ASM_OUTPUT_EH_type if they have been specified. * config/ia64/ia64.c (rtx_needs_barrier): Add flushrs. (ia64_init_builtins): Add __builtin_ia64_bsp and __builtin_ia64_flushrs. (ia64_expand_builtin): Add IA64_BUILTIN_BSP and IA64_BUILTIN_FLUSHRS. * config/ia64/ia64.h (ia64_builtins): Add IA64_BUILTIN_BSP and IA64_BUILTIN_FLUSHRS. * config/ia64/ia64.md (flushrs): New insn to flush the register stack. Add to unspec list. * config/ia64/crtbegin.asm (frame_object): Change size. (__do_frame_setup_aux): New function. * config/ia64/crtend.asm: call __do_frame_setup_aux. * config/ia64/t-ia64 (LIB2ADDEH): Add. * Makefile.in (LIB2ADDEH): Add. (LIB2ADD): Use LIB2ADDEH. Co-Authored-By: Andrew Haley <aph@cygnus.com> From-SVN: r34169
2000-05-25 17:21:51 +02:00
/* Start an exception handling region. All instructions emitted after
this point are considered to be part of the region until an
expand_eh_region_end variant is invoked. */
extern void expand_eh_region_start PARAMS ((void));
except.c (func_eh_entry): Add emitted field. 2000-05-25 Andrew MacLeod <amacleod@cygnus.com> Andrew Haley <aph@cygnus.com> * except.c (func_eh_entry): Add emitted field. (new_eh_region_entry): Set emitted field to 0; (output_exception_table_entry): Only emit previously un-emitted data, and send it to the eh_data section. (output_exception_table): Break out common parts. Output exception table for entire compilation unit to eh_data section. (output_exception_table_data): Common parts of output_exception_table. Send output to eh_data section. (output_function_exception_table): Output exception table data for a single function to eh_data section. (free_exception_table): New external to free the table. * except.h (free_exception_table): Add prototype. (output_function_exception_table): Add prototype. * final.c (final_end_function): Output function exception table for IA64_UNWIND_INFO. (final_scan_insn): Emit any unwind directives for an insn. * frame-dwarf2.c: New file containing all DWARF 2 specific code from frame.c. * frame.c: Remove all DWARF 2 specific code. * config/ia64/frame-ia64.c: New file. (gthread_stuff): Make all gthread available with IA64_UNWIND_INFO. (dwarf_fde): Define an IA64 struct for dwarf_fde. (__register_frame_info, __register_frame): Move to common area of file. (__register_frame_info_table, __register_frame_table): Move to common i area. (__deregister_frame_info, __deregister_frame): Move to common area. (__frame_init, find_fde): New versions for IA64_UNWIND_INFO. (read_uleb128): New version for ia64. (get_unwind_record): Read the next IA-64 unwind record. (read_R_record): Read a region header record. (process_a_b_reg_code): X record helper. (read_X_record): Read an X format record. (read_B_record): Read a B format record. (P3_record_types): List of record types matching the P3 format. (P7_record_types): List of record types matching the P7 format. (P8_record_types): List of record types matching the P8 format. (read_P_record): Read a P format record. (init_ia64_reg_loc): Set default fields for a register. (init_ia64_unwind_frame): Set defaults for all register records. (execute_one_ia64_descriptor): Execute one descriptor record. (rse_address_add): Calculate the position of a local reg in memory. (normalize_reg_loc): Turn a location descriptor into a memory address. (maybe_normalize_reg_loc): Only normalize a descriptor if it falls within a specified PC offset range. (get_real_reg_value): Given a register location, retrieve its value. (set_real_reg_value): Change the value of a register location. (copy_reg_value): Copy reg values, if needed. (copy_saved_reg_state): Copy all registers that need to be copied. (process_state_between): Normalize all frame register records that fall within the specified PC range. (frame_translate): Take a processed frame description, and turn everything into addresses. (build_ia64_frame_state ): Find and create frame state record for a PC. (get_personality): Get the personality routine for a given frame. (get_except_table): Get the exception table for a given frame. (record_name): Unwind record names for debugging. (print_record): Print and unwind record. (print_all_records): Print an entire unwind image. (__ia64_backtrace): Print a backtrace. (ia64_backtrace_helper): New function. (__register_frame_info_aux): New function. * config/ia64/crtend.asm (__do_frame_setup_aux): New function. * frame.h (enum unw_record_type): New unwind record types. (struct unw_p_record, unw_b_record, unw_x_record) : New unwind records. (struct unw_r_record, unwind_record): New unwind record structs. (struct unwind_info_ptr): Unwind information layout. (IA64_UNW_LOC_TYPE_*): Macros for different types for location descriptors. (struct ia64_reg_loc): Register location description. (struct ia64_frame_state): Location of all registers in a frame. (struct object): Add pc_base and fde_end for IA64_UNWIND_INFO. * libgcc2.c (__ia64_personality_v1): Personality routine. (__calc_caller_bsp): Calculate the bsp register for the caller's frame. (ia64_throw_helper): Figure out who to return to and set up the registers. (__throw): Throw routine. * output.h (assemble_eh_align, assemble_eh_label): New functions to generate EH info where we want it. (assemble_eh_integer): New function. * toplev.c (compile_file): Output module level exception table for non-ia64 targets. (main): Set exceptions_via_longjump and flag_new_exceptions based on IA64_UNWIND_INFO too. * varasm.c (assemble_eh_label): Generate a label via ASM_OUTPUT_EH_LABEL if it has been specified. (assemble_eh_align): Generate an alignment directive via ASM_OUTPUT_EH_ALIGN if it has been specified. (assemble_eh_label): Generate an integer value via ASM_OUTPUT_EH_type if they have been specified. * config/ia64/ia64.c (rtx_needs_barrier): Add flushrs. (ia64_init_builtins): Add __builtin_ia64_bsp and __builtin_ia64_flushrs. (ia64_expand_builtin): Add IA64_BUILTIN_BSP and IA64_BUILTIN_FLUSHRS. * config/ia64/ia64.h (ia64_builtins): Add IA64_BUILTIN_BSP and IA64_BUILTIN_FLUSHRS. * config/ia64/ia64.md (flushrs): New insn to flush the register stack. Add to unspec list. * config/ia64/crtbegin.asm (frame_object): Change size. (__do_frame_setup_aux): New function. * config/ia64/crtend.asm: call __do_frame_setup_aux. * config/ia64/t-ia64 (LIB2ADDEH): Add. * Makefile.in (LIB2ADDEH): Add. (LIB2ADD): Use LIB2ADDEH. Co-Authored-By: Andrew Haley <aph@cygnus.com> From-SVN: r34169
2000-05-25 17:21:51 +02:00
/* End an exception handling region for a cleanup. HANDLER is an
expression to expand for the cleanup. */
extern void expand_eh_region_end_cleanup PARAMS ((tree));
except.c (func_eh_entry): Add emitted field. 2000-05-25 Andrew MacLeod <amacleod@cygnus.com> Andrew Haley <aph@cygnus.com> * except.c (func_eh_entry): Add emitted field. (new_eh_region_entry): Set emitted field to 0; (output_exception_table_entry): Only emit previously un-emitted data, and send it to the eh_data section. (output_exception_table): Break out common parts. Output exception table for entire compilation unit to eh_data section. (output_exception_table_data): Common parts of output_exception_table. Send output to eh_data section. (output_function_exception_table): Output exception table data for a single function to eh_data section. (free_exception_table): New external to free the table. * except.h (free_exception_table): Add prototype. (output_function_exception_table): Add prototype. * final.c (final_end_function): Output function exception table for IA64_UNWIND_INFO. (final_scan_insn): Emit any unwind directives for an insn. * frame-dwarf2.c: New file containing all DWARF 2 specific code from frame.c. * frame.c: Remove all DWARF 2 specific code. * config/ia64/frame-ia64.c: New file. (gthread_stuff): Make all gthread available with IA64_UNWIND_INFO. (dwarf_fde): Define an IA64 struct for dwarf_fde. (__register_frame_info, __register_frame): Move to common area of file. (__register_frame_info_table, __register_frame_table): Move to common i area. (__deregister_frame_info, __deregister_frame): Move to common area. (__frame_init, find_fde): New versions for IA64_UNWIND_INFO. (read_uleb128): New version for ia64. (get_unwind_record): Read the next IA-64 unwind record. (read_R_record): Read a region header record. (process_a_b_reg_code): X record helper. (read_X_record): Read an X format record. (read_B_record): Read a B format record. (P3_record_types): List of record types matching the P3 format. (P7_record_types): List of record types matching the P7 format. (P8_record_types): List of record types matching the P8 format. (read_P_record): Read a P format record. (init_ia64_reg_loc): Set default fields for a register. (init_ia64_unwind_frame): Set defaults for all register records. (execute_one_ia64_descriptor): Execute one descriptor record. (rse_address_add): Calculate the position of a local reg in memory. (normalize_reg_loc): Turn a location descriptor into a memory address. (maybe_normalize_reg_loc): Only normalize a descriptor if it falls within a specified PC offset range. (get_real_reg_value): Given a register location, retrieve its value. (set_real_reg_value): Change the value of a register location. (copy_reg_value): Copy reg values, if needed. (copy_saved_reg_state): Copy all registers that need to be copied. (process_state_between): Normalize all frame register records that fall within the specified PC range. (frame_translate): Take a processed frame description, and turn everything into addresses. (build_ia64_frame_state ): Find and create frame state record for a PC. (get_personality): Get the personality routine for a given frame. (get_except_table): Get the exception table for a given frame. (record_name): Unwind record names for debugging. (print_record): Print and unwind record. (print_all_records): Print an entire unwind image. (__ia64_backtrace): Print a backtrace. (ia64_backtrace_helper): New function. (__register_frame_info_aux): New function. * config/ia64/crtend.asm (__do_frame_setup_aux): New function. * frame.h (enum unw_record_type): New unwind record types. (struct unw_p_record, unw_b_record, unw_x_record) : New unwind records. (struct unw_r_record, unwind_record): New unwind record structs. (struct unwind_info_ptr): Unwind information layout. (IA64_UNW_LOC_TYPE_*): Macros for different types for location descriptors. (struct ia64_reg_loc): Register location description. (struct ia64_frame_state): Location of all registers in a frame. (struct object): Add pc_base and fde_end for IA64_UNWIND_INFO. * libgcc2.c (__ia64_personality_v1): Personality routine. (__calc_caller_bsp): Calculate the bsp register for the caller's frame. (ia64_throw_helper): Figure out who to return to and set up the registers. (__throw): Throw routine. * output.h (assemble_eh_align, assemble_eh_label): New functions to generate EH info where we want it. (assemble_eh_integer): New function. * toplev.c (compile_file): Output module level exception table for non-ia64 targets. (main): Set exceptions_via_longjump and flag_new_exceptions based on IA64_UNWIND_INFO too. * varasm.c (assemble_eh_label): Generate a label via ASM_OUTPUT_EH_LABEL if it has been specified. (assemble_eh_align): Generate an alignment directive via ASM_OUTPUT_EH_ALIGN if it has been specified. (assemble_eh_label): Generate an integer value via ASM_OUTPUT_EH_type if they have been specified. * config/ia64/ia64.c (rtx_needs_barrier): Add flushrs. (ia64_init_builtins): Add __builtin_ia64_bsp and __builtin_ia64_flushrs. (ia64_expand_builtin): Add IA64_BUILTIN_BSP and IA64_BUILTIN_FLUSHRS. * config/ia64/ia64.h (ia64_builtins): Add IA64_BUILTIN_BSP and IA64_BUILTIN_FLUSHRS. * config/ia64/ia64.md (flushrs): New insn to flush the register stack. Add to unspec list. * config/ia64/crtbegin.asm (frame_object): Change size. (__do_frame_setup_aux): New function. * config/ia64/crtend.asm: call __do_frame_setup_aux. * config/ia64/t-ia64 (LIB2ADDEH): Add. * Makefile.in (LIB2ADDEH): Add. (LIB2ADD): Use LIB2ADDEH. Co-Authored-By: Andrew Haley <aph@cygnus.com> From-SVN: r34169
2000-05-25 17:21:51 +02:00
/* End an exception handling region for a try block, and prepares
for subsequent calls to expand_start_catch. */
extern void expand_start_all_catch PARAMS ((void));
/* Begin a catch clause. TYPE is an object to be matched by the
runtime, or null if this is a catch-all clause. */
extern void expand_start_catch PARAMS ((tree));
/* End a catch clause. Control will resume after the try/catch block. */
extern void expand_end_catch PARAMS ((void));
/* End a sequence of catch handlers for a try block. */
extern void expand_end_all_catch PARAMS ((void));
/* End an exception region for an exception type filter. ALLOWED is a
TREE_LIST of TREE_VALUE objects to be matched by the runtime.
FAILURE is a function to invoke if a mismatch ocurrs. */
extern void expand_eh_region_end_allowed PARAMS ((tree, tree));
/* End an exception region for a must-not-throw filter. FAILURE is a
function to invoke if an uncaught exception propagates this far. */
extern void expand_eh_region_end_must_not_throw PARAMS ((tree));
/* End an exception region for a throw. No handling goes on here,
but it's the easiest way for the front-end to indicate what type
is being thrown. */
extern void expand_eh_region_end_throw PARAMS ((tree));
/* End a fixup region. Within this region the cleanups for the immediately
enclosing region are _not_ run. This is used for goto cleanup to avoid
destroying an object twice. */
extern void expand_eh_region_end_fixup PARAMS ((tree));
/* Begin a region that will contain entries created with
add_partial_entry. */
extern void begin_protect_partials PARAMS ((void));
/* Create a new exception region and add the handler for the region
onto a list. These regions will be ended (and their handlers emitted)
when end_protect_partials is invoked. */
extern void add_partial_entry PARAMS ((tree));
/* End all of the pending exception regions that have handlers added with
add_partial_entry. */
extern void end_protect_partials PARAMS ((void));
/* A list of labels used for exception handlers. */
1996-07-23 22:20:04 +02:00
extern rtx exception_handler_labels;
/* Determine if the given INSN can throw an exception. */
extern bool can_throw_internal PARAMS ((rtx));
extern bool can_throw_external PARAMS ((rtx));
/* Return nonzero if nothing in this function can throw. */
extern bool nothrow_function_p PARAMS ((void));
/* After initial rtl generation, call back to finish generating
exception support code. */
extern void finish_eh_generation PARAMS ((void));
extern void init_eh PARAMS ((void));
extern void init_eh_for_function PARAMS ((void));
extern rtx reachable_handlers PARAMS ((rtx));
extern void maybe_remove_eh_handler PARAMS ((rtx));
extern void convert_from_eh_region_ranges PARAMS ((void));
extern void convert_to_eh_region_ranges PARAMS ((void));
extern void find_exception_handler_labels PARAMS ((void));
extern void output_function_exception_table PARAMS ((void));
[multiple changes] Thu Dec 11 20:42:18 1997 Teemu Torma <tot@trema.com> Thread-safe EH support for pthreads, DCE threads and Solaris threads. * integrate.c (expand_inline_function): If the inline fn uses eh context, make sure that the current fn has one. * toplev.c (rest_of_compilation): Call emit_eh_context. * except.c (use_eh_context): New fn. (get_eh_context_once): New fn. (call_get_eh_context): New fn. (emit_eh_context): New fn. (get_eh_context): Call either get_eh_context_once or call_get_eh_context, depending on what we have. (get_dynamic_handler_chain): Call get_eh_context_once. * except.h: Prototypes for fns above. * optabs.c (get_eh_context_libfunc): Removed. (init_optabs): Don't initialize it. * expr.h (get_eh_context_libfunc): Removed. * rtl.h, rtl.c: New reg_note REG_EH_CONTEXT. * config/pa/pa.h (CPP_SPEC): Support for -threads. * config/pa/pa-hpux10.h (LIB_SPEC): Ditto. * config/pa/t-pa (MULTILIB_OPTIONS, MULTILIB_DIRNAMES): New multilib for -threads. * config/sparc/t-sol2: Added multilibs for -threads and made -pthreads alias to it. * config/sparc/sol2.h (CPP_SPEC, LIB_SPEC): Added -threads and -pthreads options. * libgcc-thr.h: New file. * libgcc2.c: (__get_cpp_eh_context): Removed. (struct cpp_eh_context): Removed. (struct eh_context): Replaced cpp_eh_context with generic language specific pointer. (__get_eh_info): New function. (__throw): Check eh_context::info. (__sjthrow): Ditto. * libgcc2.c: Include libgcc-thr.h. (new_eh_context, __get_eh_context, eh_pthread_initialize, eh_context_initialize, eh_context_static, eh_context_specific, eh_context_free): New functions. (get_eh_context, eh_context_key): New variables. (__sjthrow, __sjpopnthrow, __eh_pcnthrow, __throw): Use get_eh_context to get the context. (longjmp): Move the declaration inside #ifdef DONT_USE_BUILTIN_SETJMP. * frame.c: Include libgcc-thr.h. (object_mutex): Mutex to protect the object list. (find_fde, __register_frame, __register_frame_table, __deregister_frame): Hold the lock while accessing objects. * except.h (get_eh_context): Declare. * except.c (current_function_ehc): Define. (current_function_dhc, current_function_dcc): Removed. (get_eh_context): New function. (get_dynamic_handler_chain): Use get_eh_context. (get_saved_pc_ref): Ditto. (get_dynamic_cleanup_chain): Removed references to current_function_dcc. (save_eh_status, restore_eh_status): Save and restore current_function_ehc instead. * optabs.c (get_eh_context_libfunc): New variable. (init_optabs): Initialize it. * expr.h: Declare get_eh_context_libfunc. * function.h (struct function): Replaced dhc and dcc with ehc. * except.c (get_saved_pc_ref): New functions. (eh_saved_pc_rtx, eh_saved_pc): Deleted. (expand_internal_throw_indirect): Use get_saved_pc_ref() instead of eh_saved_pc. (end_eh_unwinder): Likewise. (init_eh): Remove initialization of eh_saved_pc. * optabs.c (get_saved_pc_libfunc): New variable. (init_optabs): Initialize it. * expr.h: Declare get_saved_pc_libfunc. * except.h (eh_saved_pc_rtx): Deleted. (get_saved_pc_ref): Declared. From Scott Snyder <snyder@d0sgif.fnal.gov>: * libgcc2.c (__get_saved_pc): New. (__eh_type, __eh_pc): Deleted. (__eh_pcnthrow): Use __get_saved_pc() instead of __eh_pc. (__get_dynamic_handler_chain): Move __dynamic_handler_chain inside this fcn. cp/: Thu Dec 11 20:43:33 1997 Teemu Torma <tot@trema.com> * decl.c (ptr_ptr_type_node): Define. (init_decl_processing): Initialize it. * cp-tree.h: Declare it. * exception.cc (__cp_exception_info): Use __get_eh_info. (__cp_push_exception): Ditto. (__cp_pop_exception): Ditto. From Scott Snyder <snyder@d0sgif.fnal.gov>: * except.c (expand_builtin_throw): Use get_saved_pc_ref instead of saved_pc. (init_exception_processing): Removed saved_pc initialization. From-SVN: r17052
1997-12-12 05:53:20 +01:00
extern void expand_builtin_unwind_init PARAMS ((void));
extern rtx expand_builtin_eh_return_data_regno PARAMS ((tree));
extern rtx expand_builtin_extract_return_addr PARAMS ((tree));
extern void expand_builtin_init_dwarf_reg_sizes PARAMS ((tree));
extern rtx expand_builtin_frob_return_addr PARAMS ((tree));
extern rtx expand_builtin_dwarf_fp_regnum PARAMS ((void));
extern void expand_builtin_eh_return PARAMS ((tree, tree));
extern void expand_eh_return PARAMS ((void));
extern rtx get_exception_pointer PARAMS ((void));
struct function;
struct inline_remap;
extern int duplicate_eh_regions PARAMS ((struct function *,
struct inline_remap *));
extern void sjlj_emit_function_exit_after PARAMS ((rtx));
/* Nonzero to protect cleanup actions with must-not-throw regions. */
extern tree protect_cleanup_actions;
/* Return true if type A catches type B. */
extern int (*lang_eh_type_covers) PARAMS ((tree a, tree b));
/* Map a type to a runtime object to match type. */
extern tree (*lang_eh_runtime_type) PARAMS ((tree));
#ifndef TREE_CODE
#undef tree
#endif
1997-09-10 20:00:28 +02:00
#ifndef RTX_CODE
#undef rtx
Warning Fixes: * Makefile.in (print-rtl.o): Depend on bitmap.h. (dbxout.o): Depend on toplev.h. ($(SCHED_PREFIX)sched.o): Likewise. ($(out_object_file)): Likewise for system.h and toplev.h. (cppmain.o): Depend on gansidecl.h. (cpplib.o): Likewise. (cpperror.o): Likewise. (cppexp.o): Likewise. (cpphash.o): Likewise. (cppalloc.o): Likewise. (fix-header.o): Depend on cpplib.h and cpphash.h. (scan-decls.o): Depend on gansidecl.h. * basic-block.h (free_regset_vector): Add prototype. * cccp.c (check_precompiled): Mark parameter `fname' with ATTRIBUTE_UNUSED. (do_assert): Likewise for `op' and `keyword'. (do_unassert): Likewise. (do_line): Likewise for `keyword'. (do_error): Likewise for `op' and `keyword'. (do_warning): Likewise. (do_ident): Likewise for `keyword'. (do_pragma): Likewise for `limit', `op' and `keyword'. (do_sccs): Likewise. (do_if): Likewise for `keyword'. (do_elif): Likewise. (do_else): Likewise. (do_endif): Likewise. * collect2.c (getenv): Remove redundant prototype. (collect_exit, collect_execute, dump_file): Likewise. (dump_list): Wrap prototype and definition in COLLECT_EXPORT_LIST. (dump_prefix_list): Hide prototype and definition. * sparc.c: Include toplev.h. (intreg_operand): Mark parameter `mode' with ATTRIBUTE_UNUSED. (symbolic_memory_operand): Likewise. (sp64_medium_pic_operand): Likewise. (data_segment_operand): Likewise. (text_segment_operand): Likewise. (splittable_symbolic_memory_operand): Likewise. (splittable_immediate_memory_operand): Likewise. (eq_or_neq): Likewise. (normal_comp_operator): Likewise. (noov_compare_op): Likewise. (v9_regcmp_op): Likewise. (v8plus_regcmp_op): Likewise. (extend_op): Likewise. (cc_arithop): Likewise. (cc_arithopn): Likewise. (small_int): Likewise. (uns_small_int): Likewise. (clobbered_register): Likewise. (legitimize_pic_address): Likewise. (delay_operand): Likewise. (sparc_builtin_saveregs): Remove unused variable `stdarg'. * sparc.h (order_regs_for_local_alloc, eligible_for_return_delay, sparc_issue_rate, v8plus_regcmp_p): Add prototypes. * sparc.md (cmpdi_v8plus): Add abort for default case in switch. * cppalloc.c: Include gansidecl.h. * cpperror.c: Include stdarg.h/varargs.h and gansidecl.h. (cpp_file_line_for_message): Mark parameter `pfile' with ATTRIBUTE_UNUSED. (v_cpp_message): New function. (cpp_message): Use it. Also convert to variable arguments. (cpp_fatal): Likewise. (cpp_pfatal_with_name): Constify parameter `name'. * cppexp.c: Move gansidecl.h before cpplib.h. * cpphash.c: Likewise. * cpphash.h (hashf, delete_macro): Add prototypes. * cpplib.c: Include stdarg.h/varargs.h and move gansidecl.h before cpplib.h. Don't include errno.h. (update_path): Add arguments to prototype. (cpp_fatal, cpp_file_line_for_message, cpp_message, delete_macro, cpp_print_containing_files): Remove redundant prototypes. (cpp_hash_cleanup, add_import, append_include_chain, make_assertion, path_include, initialize_builtins, initialize_char_syntax, finclude, validate_else, comp_def_part, lookup_import, redundant_include_p, is_system_include, read_name_map, read_filename_string, open_include_file, check_macro_name, compare_defs, compare_token_lists, eval_if_expression, change_newlines): Add prototype arguments. (hashf): Remove redundant prototype. (read_token_list, free_token_list, safe_read, xcalloc, savestring, conditional_skip, skip_if_group): Add prototype arguments. (fdopen): Remove redundant prototype. (do_define, do_line, do_include, do_undef, do_error, do_pragma, do_ident, do_if, do_xifdef, do_else, do_elif, do_endif, do_sccs, do_once, do_assert, do_unassert, do_warning): Add prototype arguments. (struct directive): Add prototype arguments to function pointer member `func'. (handle_directive): Add missing arguments to call to `do_line'. (do_include): Mark parameters `unused1' and `unused2' with ATTRIBUTE_UNUSED. (do_line): Likewise for `keyword' and new parameters `unused1' and `unused2'. (do_error): Likewise for `keyword'. (do_warning): Likewise. Also add missing argument `pfile' in call to cpp_pedwarn. (do_once): Mark parameter `keyword', `unused1' and `unused2' with ATTRIBUTE_UNUSED. (do_ident): Likewise for `keyword', `buf' and `limit'. (do_pragma): Likewise. Also add missing arguments in call to do_once. (do_sccs): Mark parameter `keyword', `buf' and `limit' with ATTRIBUTE_UNUSED. (do_if): Likewise for `keyword'. (do_elif): Likewise. (eval_if_expression): Likewise for `buf' and `length'. (do_xifdef): Likewise for `unused1' and `unused2'. (do_else): Likewise for `keyword', `buf' and `limit'. (do_endif): Likewise. (parse_name): Add missing argument `pfile' in call to cpp_pedwarn. (cpp_handle_options): Remove superfluous NULL argument in call to cpp_fatal. (cpp_handle_options): Likewise. (do_assert): Mark parameter `keyword', `buf' and `limit' with ATTRIBUTE_UNUSED. (do_unassert): Likewise. (cpp_print_file_and_line): Add missing argument `pfile' in call to cpp_file_line_for_message. (v_cpp_error): New function. (cpp_error): Use it. Also accept variable arguments. (v_cpp_warning): New function. (cpp_warning): Use it. Also accept variable arguments. (cpp_pedwarn): Accept variable arguments. (v_cpp_error_with_line): New function (cpp_error_with_line): Use it. Accept variable arguments. (v_cpp_warning_with_line): New function. (cpp_warning_with_line): Use it. Accept variable arguments. Hide definition. (cpp_pedwarn_with_line): Accept variable arguments. (cpp_pedwarn_with_file_and_line): Likewise. (cpp_error_from_errno): Constify parameter `name'. Add missing argument `pfile' in call to cpp_file_line_for_message. (cpp_perror_with_name): Constify parameter `name'. * cpplib.h: Define PARAMS() in terms of PROTO(). (fatal): Remove redundant prototype. (cpp_error, cpp_warning, cpp_pedwarn, cpp_error_with_line, cpp_pedwarn_with_line, cpp_pedwarn_with_file_and_line, cpp_error_from_errno, cpp_perror_with_name, cpp_pfatal_with_name, cpp_fatal, cpp_message, cpp_pfatal_with_name, cpp_file_line_for_message, cpp_print_containing_files): Add arguments to prototypes. (scan_decls, cpp_finish): Add prototypes. * cppmain.c: Include gansidecl.h. (main): Remove unused variable `i'. * dbxout.c: Include toplev.h. * demangle.h (do_tlink, collect_execute, collect_exit, collect_wait, dump_file, file_exists): Add prototype. * dwarf2out.c (dwarf_type_encoding_name, decl_start_label): Hide prototype and definition. (gen_unspecified_parameters_die): Don't assign results of call to function new_die() to unused variable `parm_die'. (dwarf2out_line): Mark parameter `filename' with ATTRIBUTE_UNUSED. (dwarf2out_define): Likewise for `lineno' and `buffer'. * dwarfout.c (output_unsigned_leb128, output_signed_leb128): Hide prototype and definition. (output_die): Add prototype arguments to function pointer arg. (output_unspecified_parameters_die): Mark parameter `arg' with ATTRIBUTE_UNUSED. * except.c (output_exception_table_entry): Remove unused variable `eh_entry'. * except.h (expand_fixup_region_start, expand_fixup_region_end): Add prototypes. * expr.c (do_jump_by_parts_equality_rtx): Remove prototype. * expr.h (do_jump_by_parts_equality_rtx): Add prototype. * fix-header.c: Include stdarg.h/varargs.h, move gansidecl.h before cpplib.h, include cpphash.h, remove redundant prototype of cpp_fatal, don't define `const', add a prototype for `fatal'. (cpp_file_line_for_message): Add missing arguments `pfile'. (v_cpp_message): New function. (cpp_message): Use it. (v_fatal): New function. (fatal, cpp_fatal): Use it. (cpp_pfatal_with_name): Constify parameter `name'. * flow.c (free_regset_vector): Remove redundant prototype. * function.c (round_down): Wrap prototype and definition with macro ARGS_GROW_DOWNWARD. (record_insns): Wrap prototype and definition with defined (HAVE_prologue) || defined (HAVE_epilogue). * gansidecl.h (ATTRIBUTE_PRINTF_4, ATTRIBUTE_PRINTF_5): New macros. * gen-protos.c: Include gansidecl.h. (hashf): Don't make it static, constify parameter `name'. * genattrtab.c (check_attr_test): Change XEXP() to XSTR() to match specifier %s in calls to function `fatal'. * haifa-sched.c: Include toplev.h. (find_rgns): Remove unused variable `j'. * integrate.c (note_modified_parmregs): Mark parameter `x' with ATTRIBUTE_UNUSED. (mark_stores): Likewise. * jump.c (mark_modified_reg): Likewise. * output.h (insn_current_reference_address): Add prototype. (eh_frame_section): Likewise. * print-rtl.c: Include bitmap.h. * reload1.c (reload): Wrap variables `note' and `next' in macro PRESERVE_DEATH_INFO_REGNO_P. (forget_old_reloads_1): Mark parameter `ignored' with ATTRIBUTE_UNUSED. (choose_reload_regs): Remove unused variable `in'. (reload_cse_invalidate_mem): Mark parameter `ignore' with ATTRIBUTE_UNUSED. (reload_cse_check_clobber): Likewise. * rtl.h (expand_null_return, reg_classes_intersect_p): Add prototype. (mark_elimination): Fix typo in prototype. * scan-decls.c: Include gansidecl.h. * tree.h (using_eh_for_cleanups, supports_one_only): Add prototype. From-SVN: r19867
1998-05-19 10:42:48 +02:00
#endif
#ifndef _VARRAY_H_
#undef varray_type
1997-09-10 20:00:28 +02:00
#endif
/* Just because the user configured --with-sjlj-exceptions=no doesn't
mean that we can use call frame exceptions. Detect that the target
has appropriate support. */
defaults.h (ASM_PREFERRED_EH_DATA_FORMAT): New. * defaults.h (ASM_PREFERRED_EH_DATA_FORMAT): New. * dwarf2asm.c (dw2_force_const_mem, dw2_output_indirect_constant_1, dw2_output_indirect_constants, dw2_asm_output_encoded_addr_rtx): New. * dwarf2asm.h (dw2_asm_output_encoded_addr_rtx): Prototype. (dw2_output_indirect_constants): Prototype. * dwarf2out.c (dwarf2out_begin_prologue): Generate current_function_func_begin_label if we'll need it for EH. Exit early for IA64_UNWIND_INFO. * except.c: Get DW_EH_PE_* defines from dwarf2.h. (eh_data_format_name): Update for indirect references. (output_function_exception_table): Care for IA64_UNWIND_INFO. Handle ASM_PREFERRED_EH_DATA_FORMAT. * except.h (MUST_USE_SJLJ_EXCEPTIONS): IA64_UNWIND_INFO needn't define HAVE_eh_return etc. * final.c (final_start_function): Always call dwarf2out_begin_prologue. (final_end_function): Don't call output_function_exception_table. * toplev.c (compile_file): Call dw2_output_indirect_constants. (rest_of_compilation): Invoke output_function_exception_table for ia64 before assemble_end_function. * tm.texi (ASM_PREFERRED_EH_DATA_FORMAT): Document. (ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX): Document. * unwind-dw2.c (_Unwind_GetTextRelBase, _Unwind_GetDataRelBase): New. * unwind.h: Declare them. * libgcc-std.ver: Export them. * unwind-pe.h: New file. * config/alpha/elf.h (ASM_PREFERRED_EH_DATA_FORMAT): New. * config/ia64/fde-glibc.c: Use "struct unw_table_entry" instead of "fde". (find_fde_for_dso): Extract DT_PLTGOT. (_Unwind_FindTableEntry): Rename from __ia64_find_fde; return the segment and gp as well. * config/ia64/frame-ia64.c: Remove file. * config/ia64/frame-ia64.h: Remove file. * config/ia64/unwind-ia64.c: New file. * config/ia64/unwind-ia64.h: New file. * config/ia64/ia64.h (ASM_OUTPUT_EH_CHAR): Remove. (ASM_OUTPUT_EH_SHORT, ASM_OUTPUT_EH_INT): Remove. (ASM_OUTPUT_EH_DOUBLE_INT): Remove. (ASM_PREFERRED_EH_DATA_FORMAT): New. (ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX): New. (IA64_UNWIND_INFO): Re-enable. (HANDLER_SECTION): Remove. (EH_RETURN_DATA_REGNO): New. * config/ia64/ia64.md (exception_receiver): Remove. * config/ia64/t-glibc (LIB2ADDEH): Re-enable. * config/ia64/t-ia64 (LIB2ADDEH): Re-enable. From-SVN: r41981
2001-05-12 08:03:20 +02:00
#if ! (defined (EH_RETURN_DATA_REGNO) \
&& (defined (IA64_UNWIND_INFO) \
|| (defined (DWARF2_UNWIND_INFO) \
&& defined (EH_RETURN_STACKADJ_RTX) \
&& (defined (EH_RETURN_HANDLER_RTX) \
|| defined (HAVE_eh_return)))))
#define MUST_USE_SJLJ_EXCEPTIONS 1
#else
#define MUST_USE_SJLJ_EXCEPTIONS 0
#endif
#ifdef CONFIG_SJLJ_EXCEPTIONS
# if CONFIG_SJLJ_EXCEPTIONS == 1
# define USING_SJLJ_EXCEPTIONS 1
# endif
# if CONFIG_SJLJ_EXCEPTIONS == 0
# define USING_SJLJ_EXCEPTIONS 0
# ifndef EH_RETURN_DATA_REGNO
#error "EH_RETURN_DATA_REGNO required"
# endif
# ifndef EH_RETURN_STACKADJ_RTX
#error "EH_RETURN_STACKADJ_RTX required"
# endif
# if !defined(EH_RETURN_HANDLER_RTX) && !defined(HAVE_eh_return)
#error "EH_RETURN_HANDLER_RTX or eh_return required"
# endif
# if !defined(DWARF2_UNWIND_INFO) && !defined(IA64_UNWIND_INFO)
#error "{DWARF2,IA64}_UNWIND_INFO required"
# endif
# endif
#else
# define USING_SJLJ_EXCEPTIONS MUST_USE_SJLJ_EXCEPTIONS
#endif