| /* General-purpose hooks. |
| Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc. |
| |
| This program 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. |
| |
| This program 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 this program; if not, write to the Free Software |
| Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| |
| In other words, you are welcome to use, share and improve this program. |
| You are forbidden to forbid anyone else to use, share and improve |
| what you give them. Help stamp out software-hoarding! */ |
| |
| /* This file contains generic hooks that can be used as defaults for |
| target or language-dependent hook initializers. */ |
| |
| #include "config.h" |
| #include "system.h" |
| #include "coretypes.h" |
| #include "tm.h" |
| #include "hooks.h" |
| |
| /* Generic hook that does absolutely zappo. */ |
| void |
| hook_void_void (void) |
| { |
| } |
| |
| /* Generic hook that takes no arguments and returns false. */ |
| bool |
| hook_bool_void_false (void) |
| { |
| return false; |
| } |
| |
| /* Generic hook that takes no arguments and returns true. */ |
| bool |
| hook_bool_void_true (void) |
| { |
| return true; |
| } |
| |
| /* Generic hook that takes no arguments and returns NO_REGS. */ |
| int |
| hook_int_void_no_regs (void) |
| { |
| return NO_REGS; |
| } |
| |
| /* Generic hook that takes (bool) and returns false. */ |
| bool |
| hook_bool_bool_false (bool a ATTRIBUTE_UNUSED) |
| { |
| return false; |
| } |
| |
| /* Generic hook that takes (enum machine_mode) and returns false. */ |
| bool |
| hook_bool_mode_false (enum machine_mode mode ATTRIBUTE_UNUSED) |
| { |
| return false; |
| } |
| |
| /* Generic hook that takes (FILE *, const char *) and does nothing. */ |
| void |
| hook_void_FILEptr_constcharptr (FILE *a ATTRIBUTE_UNUSED, const char *b ATTRIBUTE_UNUSED) |
| { |
| } |
| |
| /* Used for the TARGET_ASM_CAN_OUTPUT_MI_THUNK hook. */ |
| bool |
| hook_bool_tree_hwi_hwi_tree_false (tree a ATTRIBUTE_UNUSED, |
| HOST_WIDE_INT b ATTRIBUTE_UNUSED, |
| HOST_WIDE_INT c ATTRIBUTE_UNUSED, |
| tree d ATTRIBUTE_UNUSED) |
| { |
| return false; |
| } |
| |
| bool |
| hook_bool_tree_hwi_hwi_tree_true (tree a ATTRIBUTE_UNUSED, |
| HOST_WIDE_INT b ATTRIBUTE_UNUSED, |
| HOST_WIDE_INT c ATTRIBUTE_UNUSED, |
| tree d ATTRIBUTE_UNUSED) |
| { |
| return true; |
| } |
| |
| bool |
| hook_bool_constcharptr_size_t_false (const char *a ATTRIBUTE_UNUSED, |
| size_t b ATTRIBUTE_UNUSED) |
| { |
| return false; |
| } |
| |
| bool |
| default_can_output_mi_thunk_no_vcall (tree a ATTRIBUTE_UNUSED, |
| HOST_WIDE_INT b ATTRIBUTE_UNUSED, |
| HOST_WIDE_INT c, |
| tree d ATTRIBUTE_UNUSED) |
| { |
| return c == 0; |
| } |
| |
| int |
| hook_int_tree_0 (tree a ATTRIBUTE_UNUSED) |
| { |
| return 0; |
| } |
| |
| /* ??? Used for comp_type_attributes, which ought to return bool. */ |
| int |
| hook_int_tree_tree_1 (tree a ATTRIBUTE_UNUSED, tree b ATTRIBUTE_UNUSED) |
| { |
| return 1; |
| } |
| |
| int |
| hook_int_rtx_0 (rtx a ATTRIBUTE_UNUSED) |
| { |
| return 0; |
| } |
| |
| int |
| hook_int_size_t_constcharptr_int_0 (size_t a ATTRIBUTE_UNUSED, |
| const char *b ATTRIBUTE_UNUSED, |
| int c ATTRIBUTE_UNUSED) |
| { |
| return 0; |
| } |
| |
| unsigned int |
| hook_uint_uint_constcharptrptr_0 (unsigned int a ATTRIBUTE_UNUSED, |
| const char **b ATTRIBUTE_UNUSED) |
| { |
| return 0; |
| } |
| |
| void |
| hook_void_tree (tree a ATTRIBUTE_UNUSED) |
| { |
| } |
| |
| /* APPLE LOCAL begin 3739318 FSF Candidate. */ |
| void |
| hook_void_constcharptr (const char *a ATTRIBUTE_UNUSED) |
| { |
| } |
| /* APPLE LOCAL end 3739318 FSF Candidate. */ |
| |
| void |
| hook_void_tree_treeptr (tree a ATTRIBUTE_UNUSED, tree *b ATTRIBUTE_UNUSED) |
| { |
| } |
| |
| bool |
| hook_bool_tree_false (tree a ATTRIBUTE_UNUSED) |
| { |
| return false; |
| } |
| |
| bool |
| hook_bool_tree_true (tree a ATTRIBUTE_UNUSED) |
| { |
| return true; |
| } |
| |
| bool |
| hook_bool_tree_tree_false (tree a ATTRIBUTE_UNUSED, tree b ATTRIBUTE_UNUSED) |
| { |
| return false; |
| } |
| |
| bool |
| hook_bool_rtx_false (rtx a ATTRIBUTE_UNUSED) |
| { |
| return false; |
| } |
| |
| bool |
| hook_bool_uintp_uintp_false (unsigned int *a ATTRIBUTE_UNUSED, |
| unsigned int *b ATTRIBUTE_UNUSED) |
| { |
| return false; |
| } |
| |
| bool |
| hook_bool_rtx_int_int_intp_false (rtx a ATTRIBUTE_UNUSED, |
| int b ATTRIBUTE_UNUSED, |
| int c ATTRIBUTE_UNUSED, |
| int *d ATTRIBUTE_UNUSED) |
| { |
| return false; |
| } |
| |
| /* Generic hook that takes an rtx and returns it. */ |
| rtx |
| hook_rtx_rtx_identity (rtx x) |
| { |
| return x; |
| } |
| |
| /* Generic hook that takes an rtx and returns NULL_RTX. */ |
| rtx |
| hook_rtx_rtx_null (rtx x ATTRIBUTE_UNUSED) |
| { |
| return NULL; |
| } |
| |
| /* Generic hook that takes a tree and an int and returns NULL_RTX. */ |
| rtx |
| hook_rtx_tree_int_null (tree a ATTRIBUTE_UNUSED, int b ATTRIBUTE_UNUSED) |
| { |
| return NULL; |
| } |
| |
| /* Generic hook that takes a tree and returns it as is. */ |
| tree |
| hook_tree_tree_identity (tree a) |
| { |
| return a; |
| } |
| |
| /* Generic hook that takes a tree and returns a NULL string. */ |
| const char * |
| hook_constcharptr_tree_null (tree t ATTRIBUTE_UNUSED) |
| { |
| return NULL; |
| } |
| |
| /* APPLE LOCAL begin constant cfstrings */ |
| /* Generic hook that takes a tree and returns NULL. */ |
| tree |
| hook_tree_tree_null (tree a ATTRIBUTE_UNUSED) |
| { |
| return NULL; |
| } |
| |
| /* Generic hook that takes three trees and returns NULL. */ |
| tree |
| hook_tree_tree_tree_tree_null (tree a ATTRIBUTE_UNUSED, |
| tree b ATTRIBUTE_UNUSED, |
| tree c ATTRIBUTE_UNUSED) |
| { |
| return NULL; |
| } |
| /* APPLE LOCAL end constant cfstrings */ |
| |
| tree |
| hook_tree_tree_bool_null (tree t ATTRIBUTE_UNUSED, bool ignore ATTRIBUTE_UNUSED) |
| { |
| return NULL; |
| } |