8c54814372
* Some initial support for FreeBSD-alpha * Add some optimizations required by g77, which still might be of some use to adventuring C/C++ programmers. Obtained from: OpenBSD (parts)
159 lines
5.4 KiB
Plaintext
159 lines
5.4 KiB
Plaintext
--- config/i386/freebsd.h.orig Sun Oct 19 09:31:05 1997
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+++ config/i386/freebsd.h Tue Aug 11 14:28:56 1998
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@@ -35,10 +35,21 @@
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#include "i386/perform.h"
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#undef CPP_PREDEFINES
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-#define CPP_PREDEFINES "-Dunix -Di386 -D__FreeBSD__ -D__386BSD__ -Asystem(unix) -Asystem(FreeBSD) -Acpu(i386) -Amachine(i386)"
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+#define CPP_PREDEFINES "-Dunix -Di386 -D__FreeBSD__=2 -Asystem(unix) -Asystem(FreeBSD) -Acpu(i386) -Amachine(i386)"
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+
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+/* FreeBSD using a.out does not support DWARF2 unwinding mechanisms.
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+ Thus, need the equivalent of "-fsjlj-exceptions" (use setjmp/longjmp
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+ for exceptions). */
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+#define DWARF2_UNWIND_INFO 0
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+
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+/* Provide a CPP_SPEC appropriate for OpenBSD. Current we just deal with
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+ the GCC option `-posix'. */
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+
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+#undef CPP_SPEC
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+#define CPP_SPEC "%{posix:-D_POSIX_SOURCE}"
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/* Like the default, except no -lg. */
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-#define LIB_SPEC "%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}"
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+#define LIB_SPEC "%{!shared:%{!pg:-lc}%{pg:-lc_p}}"
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#undef SIZE_TYPE
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#define SIZE_TYPE "unsigned int"
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@@ -54,8 +65,13 @@
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#undef WCHAR_TYPE_SIZE
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#define WCHAR_TYPE_SIZE 16
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+/* We have atexit(3). */
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#define HAVE_ATEXIT
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+/* We want gcc.c to call mktemp() for each file it generates. We would
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+ prefer mkstemp(), but we will take what we get. XXX busted */
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+/* #undef MKTEMP_EACH_FILE */
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+
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#undef ASM_APP_ON
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#define ASM_APP_ON "#APP\n"
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@@ -114,6 +130,7 @@
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#define TYPE_ASM_OP ".type"
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#define SIZE_ASM_OP ".size"
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+#define SET_ASM_OP ".set"
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/* The following macro defines the format used to output the second
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operand of the .type assembler directive. Different svr4 assemblers
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@@ -123,6 +140,16 @@
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#define TYPE_OPERAND_FMT "@%s"
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+/* Handle #pragma weak and #pragma pack. */
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+
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+#define HANDLE_SYSV_PRAGMA 1
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+
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+/* This is how we tell the assembler that a symbol is weak. */
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+
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+#define ASM_WEAKEN_LABEL(FILE,NAME) \
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+ do { fputs ("\t.weak\t", FILE); assemble_name (FILE, NAME); \
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+ fputc ('\n', FILE); } while (0)
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+
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/* Write the extra assembler code needed to declare a function's result.
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Most svr4 assemblers don't require any special declaration of the
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result value, but there are exceptions. */
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@@ -131,9 +158,9 @@
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#define ASM_DECLARE_RESULT(FILE, RESULT)
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#endif
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-/* These macros generate the special .type and .size directives which
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+/* these macros generate the special .type and .size directives which
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are used to set the corresponding fields of the linker symbol table
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- entries in an ELF object file under SVR4. These macros also output
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+ entries in an elf object file under svr4. these macros also output
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the starting labels for the relevant functions/objects. */
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/* Write the extra assembler code needed to declare a function properly.
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@@ -185,6 +212,7 @@
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&& DECL_INITIAL (DECL) == error_mark_node \
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&& !size_directive_output) \
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{ \
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+ size_directive_output = 1; \
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fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
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assemble_name (FILE, name); \
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fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL)));\
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@@ -213,33 +241,57 @@
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} \
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} while (0)
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+/* XXX - should ASM_SPEC be " %| %{fpic:-k} %{fPIC:-k -K}" ??? */
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#define ASM_SPEC " %| %{fpic:-k} %{fPIC:-k}"
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+
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#define LINK_SPEC \
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- "%{!nostdlib:%{!r*:%{!e*:-e start}}} -dc -dp %{static:-Bstatic} %{assert*}"
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+ "%{p:%e`-p' not supported; use `-pg' and gprof(1)} \
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+ %{shared:-Bshareable} \
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+ %{!shared:%{!nostdlib:%{!r:%{!e*:-e start}}} -dc -dp %{static:-Bstatic} \
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+ %{pg:-Bstatic} %{Z}} \
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+ %{assert*} %{R*}"
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+
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+#ifdef FROM_OPENBSD
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+/* This defines which switch letters take arguments.
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+ make -R /path/to/lib work the same as -R/path/to/lib */
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+#undef SWITCH_TAKES_ARG
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+#define SWITCH_TAKES_ARG(CHAR) \
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+ (DEFAULT_SWITCH_TAKES_ARG(CHAR) \
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+ || (CHAR) == 'R')
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+#endif
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+
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+#define STARTFILE_SPEC \
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+ "%{shared:c++rt0.o%s} \
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+ %{!shared:%{pg:gcrt0.o%s}%{!pg:%{static:scrt0.o%s}%{!static:crt0.o%s}}}"
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-/* This is defined when gcc is compiled in the BSD-directory-tree, and must
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- * make up for the gap to all the stuff done in the GNU-makefiles.
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+#define MD_STARTFILE_PREFIX "/usr/lib/aout/"
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+
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+/* FREEBSD_NATIVE is defined when gcc is compiled in the BSD-directory-tree,
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+ * and must make up for the gap to all the stuff done in the GNU-makefiles.
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*/
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#ifdef FREEBSD_NATIVE
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-#define INCLUDE_DEFAULTS { \
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- { "/usr/include", 0, 0, 0 }, \
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- { "/usr/include/g++", "G++", 1, 1 }, \
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- { 0, 0, 0, 0} \
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- }
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+#undef GCC_INCLUDE_DIR
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+#define GCC_INCLUDE_DIR "/usr/include"
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+
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+#undef GPLUSPLUS_INCLUDE_DIR
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+#define GPLUSPLUS_INCLUDE_DIR "/usr/include/g++"
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+
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+/* Look for the include files in the system-defined places. */
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+
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+#undef INCLUDE_DEFAULTS
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+#define INCLUDE_DEFAULTS \
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+ { \
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+ { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1 }, \
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+ { GCC_INCLUDE_DIR, 0, 0, 0 }, \
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+ { 0, 0, 0, 0 } \
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+ }
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#undef MD_EXEC_PREFIX
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#define MD_EXEC_PREFIX "/usr/libexec/"
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#undef STANDARD_STARTFILE_PREFIX
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#define STANDARD_STARTFILE_PREFIX "/usr/lib"
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-
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-#if 0 /* This is very wrong!!! */
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-#define DEFAULT_TARGET_MACHINE "i386-unknown-freebsd_1.0"
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-#define GPLUSPLUS_INCLUDE_DIR "/usr/local/lib/gcc-lib/i386-unknown-freebsd_1.0/2.5.8/include"
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-#define TOOL_INCLUDE_DIR "/usr/local/i386-unknown-freebsd_1.0/include"
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-#define GCC_INCLUDE_DIR "/usr/local/lib/gcc-lib/i386-unknown-freebsd_1.0/2.5.8/include"
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-#endif
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#endif /* FREEBSD_NATIVE */
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