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comparison gcc/config/i386/freebsd.h @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
parents f6334be47118
children 84e7813d76e9
comparison
equal deleted inserted replaced
68:561a7518be6b 111:04ced10e8804
1 /* Definitions for Intel 386 running FreeBSD with ELF format 1 /* Definitions for Intel 386 running FreeBSD with ELF format
2 Copyright (C) 1996, 2000, 2002, 2004, 2007, 2010 2 Copyright (C) 1996-2017 Free Software Foundation, Inc.
3 Free Software Foundation, Inc.
4 Contributed by Eric Youngdale. 3 Contributed by Eric Youngdale.
5 Modified for stabs-in-ELF by H.J. Lu. 4 Modified for stabs-in-ELF by H.J. Lu.
6 Adapted from GNU/Linux version by John Polstra. 5 Adapted from GNU/Linux version by John Polstra.
7 Continued development by David O'Brien <obrien@freebsd.org> 6 Continued development by David O'Brien <obrien@freebsd.org>
8 7
20 19
21 You should have received a copy of the GNU General Public License 20 You should have received a copy of the GNU General Public License
22 along with GCC; see the file COPYING3. If not see 21 along with GCC; see the file COPYING3. If not see
23 <http://www.gnu.org/licenses/>. */ 22 <http://www.gnu.org/licenses/>. */
24 23
25
26 #define TARGET_VERSION fprintf (stderr, " (i386 FreeBSD/ELF)");
27 24
28 /* Override the default comment-starter of "/". */ 25 /* Override the default comment-starter of "/". */
29 #undef ASM_COMMENT_START 26 #undef ASM_COMMENT_START
30 #define ASM_COMMENT_START "#" 27 #define ASM_COMMENT_START "#"
31 28
60 57
61 #undef SUBTARGET_EXTRA_SPECS /* i386.h bogusly defines it. */ 58 #undef SUBTARGET_EXTRA_SPECS /* i386.h bogusly defines it. */
62 #define SUBTARGET_EXTRA_SPECS \ 59 #define SUBTARGET_EXTRA_SPECS \
63 { "fbsd_dynamic_linker", FBSD_DYNAMIC_LINKER } 60 { "fbsd_dynamic_linker", FBSD_DYNAMIC_LINKER }
64 61
65 /* Provide a STARTFILE_SPEC appropriate for FreeBSD. Here we add 62 /* Use the STARTFILE_SPEC from config/freebsd-spec.h. */
66 the magical crtbegin.o file (see crtstuff.c) which provides part
67 of the support for getting C++ file-scope static object constructed
68 before entering `main'. */
69
70 #undef STARTFILE_SPEC
71 #define STARTFILE_SPEC \
72 "%{!shared: \
73 %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} \
74 %{!p:%{profile:gcrt1.o%s} \
75 %{!profile:crt1.o%s}}}} \
76 crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
77 63
78 /* Provide a ENDFILE_SPEC appropriate for FreeBSD. Here we tack on 64 #undef STARTFILE_SPEC
79 the magical crtend.o file (see crtstuff.c) which provides part of 65 #define STARTFILE_SPEC FBSD_STARTFILE_SPEC
80 the support for getting C++ file-scope static object constructed
81 before entering `main', followed by a normal "finalizer" file,
82 `crtn.o'. */
83 66
84 #undef ENDFILE_SPEC 67 /* Use the ENDFILE_SPEC from config/freebsd-spec.h. */
85 #define ENDFILE_SPEC \ 68
86 "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s" 69 #undef ENDFILE_SPEC
70 #define ENDFILE_SPEC FBSD_ENDFILE_SPEC
87 71
88 /* Provide a LINK_SPEC appropriate for FreeBSD. Here we provide support 72 /* Provide a LINK_SPEC appropriate for FreeBSD. Here we provide support
89 for the special GCC options -static and -shared, which allow us to 73 for the special GCC options -static and -shared, which allow us to
90 link things in one of these three modes by applying the appropriate 74 link things in one of these three modes by applying the appropriate
91 combinations of options at link-time. 75 combinations of options at link-time.
112 96
113 This is used to align code labels according to Intel recommendations. */ 97 This is used to align code labels according to Intel recommendations. */
114 98
115 #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN 99 #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
116 #undef ASM_OUTPUT_MAX_SKIP_ALIGN 100 #undef ASM_OUTPUT_MAX_SKIP_ALIGN
117 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE, LOG, MAX_SKIP) \ 101 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \
118 if ((LOG) != 0) { \ 102 do { \
119 if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \ 103 if ((LOG) != 0) { \
120 else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \ 104 if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
121 } 105 else { \
106 fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
107 /* Make sure that we have at least 8 byte alignment if > 8 byte \
108 alignment is preferred. */ \
109 if ((LOG) > 3 \
110 && (1 << (LOG)) > ((MAX_SKIP) + 1) \
111 && (MAX_SKIP) >= 7) \
112 fputs ("\t.p2align 3\n", (FILE)); \
113 } \
114 } \
115 } while (0)
122 #endif 116 #endif
123 117
124 /* Don't default to pcc-struct-return, we want to retain compatibility with 118 /* Don't default to pcc-struct-return, we want to retain compatibility with
125 older gcc versions AND pcc-struct-return is nonreentrant. 119 older gcc versions AND pcc-struct-return is nonreentrant.
126 (even though the SVR4 ABI for the i386 says that records and unions are 120 (even though the SVR4 ABI for the i386 says that records and unions are
132 /* FreeBSD sets the rounding precision of the FPU to 53 bits. Let the 126 /* FreeBSD sets the rounding precision of the FPU to 53 bits. Let the
133 compiler get the contents of <float.h> and std::numeric_limits correct. */ 127 compiler get the contents of <float.h> and std::numeric_limits correct. */
134 #undef TARGET_96_ROUND_53_LONG_DOUBLE 128 #undef TARGET_96_ROUND_53_LONG_DOUBLE
135 #define TARGET_96_ROUND_53_LONG_DOUBLE (!TARGET_64BIT) 129 #define TARGET_96_ROUND_53_LONG_DOUBLE (!TARGET_64BIT)
136 130
137 /* Put all *tf routines in libgcc. */
138 #undef LIBGCC2_HAS_TF_MODE
139 #define LIBGCC2_HAS_TF_MODE 1
140 #define LIBGCC2_TF_CEXT q
141 #define TF_SIZE 113
142
143 /* Static stack checking is supported by means of probes. */ 131 /* Static stack checking is supported by means of probes. */
144 #define STACK_CHECK_STATIC_BUILTIN 1 132 #define STACK_CHECK_STATIC_BUILTIN 1
145 133
146 /* Support for i386 has been removed from FreeBSD 6.0 onward. */ 134 #define SUBTARGET32_DEFAULT_CPU "i586"
147 #if FBSD_MAJOR >= 6 135
148 #define SUBTARGET32_DEFAULT_CPU "i486" 136 #define TARGET_ASM_FILE_END file_end_indicate_exec_stack
149 #endif 137