1/* Definitions for PA_RISC with ELF-32 format
2   Copyright (C) 2000-2022 Free Software Foundation, Inc.
3
4This file is part of GCC.
5
6GCC is free software; you can redistribute it and/or modify
7it under the terms of the GNU General Public License as published by
8the Free Software Foundation; either version 3, or (at your option)
9any later version.
10
11GCC is distributed in the hope that it will be useful,
12but WITHOUT ANY WARRANTY; without even the implied warranty of
13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14GNU General Public License for more details.
15
16You should have received a copy of the GNU General Public License
17along with GCC; see the file COPYING3.  If not see
18<http://www.gnu.org/licenses/>.  */
19
20/* Turn off various SOM crap we don't want.  */
21#undef TARGET_ELF32
22#define TARGET_ELF32 1
23
24/* The libcall __canonicalize_funcptr_for_compare is referenced in
25   crtend.o and the reference isn't resolved in objects that don't
26   compare function pointers.  Thus, we need to play games to provide
27   a reference in crtbegin.o.  The rest of the define is the same
28   as that in crtstuff.c  */
29#define CTOR_LIST_BEGIN \
30  asm (".type __canonicalize_funcptr_for_compare,@function\n"		\
31"	.text\n"							\
32"	.word __canonicalize_funcptr_for_compare-$PIC_pcrel$0");	\
33  STATIC func_ptr __CTOR_LIST__[1]					\
34    __attribute__ ((__used__, section(".ctors"),			\
35		    aligned(sizeof(func_ptr))))				\
36    = { (func_ptr) (-1) }
37
38/* This is a PIC version of CRT_CALL_STATIC_FUNCTION.  The PIC
39   register has to be saved before the call and restored after
40   the call.  We assume that register %r4 is available for this
41   purpose.  The hack prevents GCC from deleting the restore.  */
42#ifdef CRTSTUFFS_O
43#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC)	\
44static void __attribute__((__used__))			\
45call_ ## FUNC (void)					\
46{							\
47  asm (SECTION_OP);					\
48  asm volatile ("bl " #FUNC ",%%r2\n\t"			\
49		"copy %%r19,%%r4\n\t"			\
50		"copy %%r4,%%r19\n"			\
51		:					\
52		:					\
53		: "r1", "r2", "r4", "r20", "r21",	\
54		  "r22", "r23", "r24", "r25", "r26",	\
55		  "r27", "r28", "r29", "r31");		\
56  asm (TEXT_SECTION_ASM_OP);				\
57}
58#endif
59
60/* We need to link against libgcc.a for __canonicalize_funcptr_for_compare
61   and $$dyncall.  */
62#undef  ENDFILE_SPEC
63#define ENDFILE_SPEC GNU_USER_TARGET_ENDFILE_SPEC "libgcc.a%s"
64
65#undef  WCHAR_TYPE
66#define WCHAR_TYPE "long int"
67
68#undef  WCHAR_TYPE_SIZE
69#define WCHAR_TYPE_SIZE BITS_PER_WORD
70
71/* POSIX types such as pthread_mutex_t require 16-byte alignment to retain
72   layout compatibility with the original linux thread implementation.  */
73#undef MALLOC_ABI_ALIGNMENT
74#define MALLOC_ABI_ALIGNMENT 128
75
76/* Place jump tables in the text section except when generating non-PIC
77   code.  When generating non-PIC code, the relocations needed to load the
78   address of the jump table result in a text label in the final executable
79   if the jump table is placed in the text section.  This breaks the unwind
80   data for the function.  Thus, the jump table needs to be placed in
81   rodata when generating non-PIC code.  */
82#undef JUMP_TABLES_IN_TEXT_SECTION
83#define JUMP_TABLES_IN_TEXT_SECTION (flag_pic)
84
85/* We need to override default selection to put references to functions
86   in COMDAT groups in .data.rel.ro.local.  */
87#undef TARGET_ASM_SELECT_RTX_SECTION
88#define TARGET_ASM_SELECT_RTX_SECTION pa_elf_select_rtx_section
89