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956d6950 1/* Definitions for rtems targeting a PowerPC using elf.
83ffe9cd 2 Copyright (C) 1996-2023 Free Software Foundation, Inc.
ae407704
DE		 3 Contributed by Joel Sherrill (joel@OARcorp.com).
4
5de601cf 5 This file is part of GCC.
ae407704 6
5de601cf
NC		 7 GCC is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published
2f83c7d6 9 by the Free Software Foundation; either version 3, or (at your
5de601cf 10 option) any later version.
ae407704 11
5de601cf
NC		 12 GCC is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
15 License for more details.
ae407704 16
99f08974
SH		 17 Under Section 7 of GPL version 3, you are granted additional
18 permissions described in the GCC Runtime Library Exception, version
19 3.1, as published by the Free Software Foundation.
20
21 You should have received a copy of the GNU General Public License and
22 a copy of the GCC Runtime Library Exception along with this program;
23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
2f83c7d6 24 <http://www.gnu.org/licenses/>. */
ae407704 25
556b816b
SH		 26/* Undef gnu-user.h macro we don't want. */
27#undef CPLUSPLUS_CPP_SPEC
28
16bab95a
SH		 29/* Copy and paste from linux64.h and freebsd64.h */
30#ifdef IN_LIBGCC2
31#undef TARGET_64BIT
32#ifdef __powerpc64__
33#define TARGET_64BIT 1
34#else
35#define TARGET_64BIT 0
36#endif
37#endif
38
39/* Copy and paste from linux64.h and freebsd64.h */
40#undef TARGET_AIX
41#define TARGET_AIX TARGET_64BIT
ae407704 42
17691698
SH		 43/* Simplified copy and paste from linux64.h and freebsd64.h */
44#undef DOT_SYMBOLS
45#define DOT_SYMBOLS 0
46
47/* Copy and paste from linux64.h and freebsd64.h */
48#undef TARGET_CMODEL
49#define TARGET_CMODEL rs6000_current_cmodel
50#define SET_CMODEL(opt) rs6000_current_cmodel = opt
51
7990b46f 52#undef TARGET_OS_CPP_BUILTINS
16bab95a
SH		 53#define TARGET_OS_CPP_BUILTINS() \
54 do \
55 { \
56 builtin_define ("__rtems__"); \
57 builtin_define ("__USE_INIT_FINI__"); \
58 builtin_assert ("system=rtems"); \
59 if (TARGET_64BIT) \
60 { \
61 builtin_define ("__PPC__"); \
62 builtin_define ("__PPC64__"); \
63 builtin_define ("__powerpc64__"); \
64 builtin_assert ("cpu=powerpc64"); \
65 builtin_assert ("machine=powerpc64"); \
66 } \
67 else \
68 { \
69 builtin_define_std ("PPC"); \
70 builtin_define_std ("powerpc"); \
71 builtin_assert ("cpu=powerpc"); \
72 builtin_assert ("machine=powerpc"); \
73 TARGET_OS_SYSV_CPP_BUILTINS (); \
74 } \
75 } \
76 while (0)
77
17691698
SH		 78/* Copy and paste from linux64.h and freebsd64.h */
79#undef RELOCATABLE_NEEDS_FIXUP
80#define RELOCATABLE_NEEDS_FIXUP \
81 (rs6000_isa_flags & rs6000_isa_flags_explicit & OPTION_MASK_RELOCATABLE)
82
83/* Copy and paste from linux64.h */
84#undef RS6000_ABI_NAME
85#define RS6000_ABI_NAME "linux"
86
16bab95a 87/* Copy and paste from linux64.h and freebsd64.h */
58385f6a 88#define INVALID_64BIT "%<-m%s%> not supported in this configuration"
16bab95a
SH		 89
90/* A lot of copy and paste from linux64.h and freebsd64.h */
91#undef SUBSUBTARGET_OVERRIDE_OPTIONS
92#define SUBSUBTARGET_OVERRIDE_OPTIONS \
93 do \
94 { \
95 if (rs6000_isa_flags & OPTION_MASK_64BIT) \
96 { \
97 rs6000_elf_abi = 2; \
98 rs6000_current_abi = ABI_ELFv2; \
99 if (rs6000_isa_flags & OPTION_MASK_RELOCATABLE) \
100 { \
101 rs6000_isa_flags &= ~OPTION_MASK_RELOCATABLE; \
102 error (INVALID_64BIT, "relocatable"); \
103 } \
104 if (rs6000_isa_flags & OPTION_MASK_EABI) \
105 { \
106 rs6000_isa_flags &= ~OPTION_MASK_EABI; \
107 error (INVALID_64BIT, "eabi"); \
108 } \
109 if (TARGET_PROTOTYPE) \
110 { \
111 target_prototype = 0; \
112 error (INVALID_64BIT, "prototype"); \
113 } \
114 if ((rs6000_isa_flags & OPTION_MASK_POWERPC64) == 0) \
115 { \
116 rs6000_isa_flags |= OPTION_MASK_POWERPC64; \
a3f9f006 117 error ("%<-m64%> requires a PowerPC64 cpu"); \
16bab95a 118 } \
17691698
SH		 119 if ((rs6000_isa_flags_explicit \
120 & OPTION_MASK_MINIMAL_TOC) != 0) \
121 { \
00f34291 122 if (OPTION_SET_P (rs6000_current_cmodel) \
17691698 123 && rs6000_current_cmodel != CMODEL_SMALL) \
a3f9f006 124 error ("%<-mcmodel%> incompatible with other toc options"); \
17691698
SH		 125 SET_CMODEL (CMODEL_SMALL); \
126 } \
127 else \
128 { \
00f34291 129 if (!OPTION_SET_P (rs6000_current_cmodel)) \
17691698
SH		 130 SET_CMODEL (CMODEL_MEDIUM); \
131 if (rs6000_current_cmodel != CMODEL_SMALL) \
132 { \
133 TARGET_NO_FP_IN_TOC = 0; \
134 TARGET_NO_SUM_IN_TOC = 0; \
135 } \
136 } \
16bab95a
SH		 137 } \
138 } \
7990b46f 139 while (0)
0186a143 140
228c1313
SH		 141#undef TARGET_LIBGCC_SDATA_SECTION
142#define TARGET_LIBGCC_SDATA_SECTION ".sdata"
143
16bab95a
SH		 144/* Copy and paste from linux64.h and freebsd64.h */
145#undef SIZE_TYPE
146#define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "unsigned int")
147
148/* Copy and paste from linux64.h and freebsd64.h */
149#undef PTRDIFF_TYPE
150#define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int")
151
152/* Copy and paste from freebsd64.h */
153#undef WCHAR_TYPE
154
155/* Copy and paste from freebsd64.h */
156#undef WCHAR_TYPE_SIZE
157#define WCHAR_TYPE_SIZE 32
158
159/* Copy and paste from linux64.h and freebsd64.h */
160#ifdef __powerpc64__
161#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
162 asm (SECTION_OP "\n" \
163" bl " #FUNC "\n" \
164" nop\n" \
165" .previous");
166#endif
167
168/* This could be also POWERPC_FREEBSD. It is related to the save/restore
169 defines below. */
170#define POWERPC_LINUX
171
172/* Copy and paste from linux64.h and freebsd64.h */
173#undef SAVE_FP_PREFIX
174#define SAVE_FP_PREFIX (TARGET_64BIT ? "._savef" : "_savefpr_")
175#undef SAVE_FP_SUFFIX
176#define SAVE_FP_SUFFIX ""
177#undef RESTORE_FP_PREFIX
178#define RESTORE_FP_PREFIX (TARGET_64BIT ? "._restf" : "_restfpr_")
179#undef RESTORE_FP_SUFFIX
180#define RESTORE_FP_SUFFIX ""
b9d13999 181
17691698
SH		 182/* Copy and paste from linux64.h and freebsd64.h */
183#undef ASM_PREFERRED_EH_DATA_FORMAT
184#define ASM_PREFERRED_EH_DATA_FORMAT(CODE, GLOBAL) \
185 (TARGET_64BIT || flag_pic \
186 ? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel \
187 | (TARGET_64BIT ? DW_EH_PE_udata8 : DW_EH_PE_sdata4)) \
188 : DW_EH_PE_absptr)
189
190/* Copy and paste from linux64.h and freebsd64.h */
191#undef TOC_SECTION_ASM_OP
192#define TOC_SECTION_ASM_OP \
193 (TARGET_64BIT \
194 ? "\t.section\t\".toc\",\"aw\"" \
195 : "\t.section\t\".got\",\"aw\"")
196
197/* Copy and paste from linux64.h and freebsd64.h */
198#undef MINIMAL_TOC_SECTION_ASM_OP
199#define MINIMAL_TOC_SECTION_ASM_OP \
200 (TARGET_64BIT \
201 ? "\t.section\t\".toc1\",\"aw\"" \
202 : (flag_pic \
203 ? "\t.section\t\".got2\",\"aw\"" \
204 : "\t.section\t\".got1\",\"aw\""))
205
16bab95a
SH		 206/* Copy and paste from linux64.h and freebsd64.h */
207#undef ASM_DECLARE_FUNCTION_SIZE
208#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
209 do \
210 { \
211 if (!flag_inhibit_size_directive) \
212 { \
213 fputs ("\t.size\t", (FILE)); \
214 if (TARGET_64BIT && DOT_SYMBOLS) \
215 putc ('.', (FILE)); \
216 assemble_name ((FILE), (FNAME)); \
217 fputs (",.-", (FILE)); \
218 rs6000_output_function_entry (FILE, FNAME); \
219 putc ('\n', (FILE)); \
220 } \
221 } \
222 while (0)
223
224/* Copy and paste from linux64.h and freebsd64.h */
225#undef ASM_OUTPUT_SPECIAL_POOL_ENTRY_P
226#define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE) \
227 (TARGET_TOC \
2e42a52f 228 && (SYMBOL_REF_P (X) \
16bab95a 229 || (GET_CODE (X) == CONST && GET_CODE (XEXP (X, 0)) == PLUS \
2e42a52f 230 && SYMBOL_REF_P (XEXP (XEXP (X, 0), 0))) \
16bab95a 231 || GET_CODE (X) == LABEL_REF \
2e42a52f 232 || (CONST_INT_P (X) \
16bab95a 233 && GET_MODE_BITSIZE (MODE) <= GET_MODE_BITSIZE (Pmode)) \
2e42a52f 234 || (CONST_DOUBLE_P (X) \
16bab95a
SH		 235 && ((TARGET_64BIT \
236 && (TARGET_MINIMAL_TOC \
237 || (SCALAR_FLOAT_MODE_P (GET_MODE (X)) \
238 && ! TARGET_NO_FP_IN_TOC))) \
239 || (!TARGET_64BIT \
240 && !TARGET_NO_FP_IN_TOC \
241 && SCALAR_FLOAT_MODE_P (GET_MODE (X)) \
242 && BITS_PER_WORD == HOST_BITS_PER_INT)))))
243
244#undef CPP_OS_DEFAULT_SPEC
245#define CPP_OS_DEFAULT_SPEC "\
b9d13999
RC		 246%{!mcpu*: %{!Dppc*: %{!Dmpc*: -Dmpc750} } }\
247%{mcpu=403: %{!Dppc*: %{!Dmpc*: -Dppc403} } } \
248%{mcpu=505: %{!Dppc*: %{!Dmpc*: -Dmpc505} } } \
249%{mcpu=601: %{!Dppc*: %{!Dmpc*: -Dppc601} } } \
250%{mcpu=602: %{!Dppc*: %{!Dmpc*: -Dppc602} } } \
251%{mcpu=603: %{!Dppc*: %{!Dmpc*: -Dppc603} } } \
252%{mcpu=603e: %{!Dppc*: %{!Dmpc*: -Dppc603e} } } \
253%{mcpu=604: %{!Dppc*: %{!Dmpc*: -Dmpc604} } } \
254%{mcpu=750: %{!Dppc*: %{!Dmpc*: -Dmpc750} } } \
255%{mcpu=821: %{!Dppc*: %{!Dmpc*: -Dmpc821} } } \
bce15ee8 256%{mcpu=860: %{!Dppc*: %{!Dmpc*: -Dmpc860} } } \
887974fd 257%{mcpu=8540: %{!Dppc*: %{!Dmpc*: -Dppc8540} } } \
36ecfe1c
SH		 258%{mcpu=e6500: -D__PPC_CPU_E6500__} \
259%{mvrsave: -D__PPC_VRSAVE__}"
b9d13999 260
16bab95a
SH		 261#undef ASM_SPEC
262#define ASM_SPEC "%{!m64:%(asm_spec32)}%{m64:%(asm_spec64)} %(asm_spec_common)"
263
264#define ASM_SPEC32 "-a32 \
265%{mrelocatable} %{mrelocatable-lib} %{" FPIE_OR_FPIC_SPEC ":-K PIC} \
266%{memb|msdata=eabi: -memb}"
267
268#define ASM_SPEC64 "-a64"
269
270#define ASM_SPEC_COMMON "%(asm_cpu) \
271%{,assembler|,assembler-with-cpp: %{mregnames} %{mno-regnames}}" \
272 ENDIAN_SELECT(" -mbig", " -mlittle", DEFAULT_ASM_ENDIAN)
273
274#undef LINK_OS_DEFAULT_SPEC
275#define LINK_OS_DEFAULT_SPEC \
276"%{!m64:%(link_os_spec32)}%{m64:%(link_os_spec64)}"
277
278#define LINK_OS_SPEC32 ENDIAN_SELECT(" -m elf32ppc", \
279 " -m elf32lppc", \
280 " -m elf32ppc")
281#define LINK_OS_SPEC64 ENDIAN_SELECT(" -m elf64ppc", \
282 " -m elf64lppc", \
283 " -m elf64ppc")
284
b9d13999
RC		 285#undef SUBSUBTARGET_EXTRA_SPECS
286#define SUBSUBTARGET_EXTRA_SPECS \
16bab95a
SH		 287 { "asm_spec_common", ASM_SPEC_COMMON }, \
288 { "asm_spec32", ASM_SPEC32 }, \
289 { "asm_spec64", ASM_SPEC64 }, \
290 { "link_os_spec32", LINK_OS_SPEC32 }, \
291 { "link_os_spec64", LINK_OS_SPEC64 },
62045234
AM		 292
293/* Use gnu-user.h LINK_GCC_SEQUENCE_SPEC for rtems. */
294#undef LINK_GCC_C_SEQUENCE_SPEC
295#define LINK_GCC_C_SEQUENCE_SPEC \
296 "%{mads|myellowknife|mmvme|msim:%G %L %G;" \
297 "!mcall-*|mcall-linux:" GNU_USER_TARGET_LINK_GCC_C_SEQUENCE_SPEC ";" \
298 ":%G %L %G}"
44613840
SH		 299
300#define RTEMS_STARTFILE_SPEC "ecrti%O%s rtems_crti%O%s crtbegin%O%s"
301#define RTEMS_ENDFILE_SPEC "crtend%O%s rtems_crtn%O%s ecrtn%O%s"
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