From 367432d08b4a00f180c3d0710a0f34cda1b6eeee Mon Sep 17 00:00:00 2001
From: Andris Pavenis <andris.pavenis@iki.fi>
Date: Sat, 5 Dec 2015 08:49:12 +0200
Subject: [PATCH 5/6] [DJGPP] gcc/config/i386: update DJGPP configuration related files
* gcc/config/i386/djgpp.h: update
* gcc/config/i386/xm-djgpp.h: update
* gcc/config/i386/djgpp.c: new file
* gcc/config/i386/djgpp.opt: remove obsolete option
* gcc/config/i386/t-djgpp: new file
* gcc/config.gcc: use i386/t-djgpp for DJGPP target
---
gcc/config.gcc | 3 ++
gcc/config/i386/djgpp.c | 50 +++++++++++++++++++
gcc/config/i386/djgpp.h | 122 ++++++++++++++++++++++-----------------------
gcc/config/i386/djgpp.opt | 6 ---
gcc/config/i386/t-djgpp | 8 +++
gcc/config/i386/xm-djgpp.h | 40 +++++++++++++--
6 files changed, 158 insertions(+), 71 deletions(-)
create mode 100644 gcc/config/i386/djgpp.c
create mode 100644 gcc/config/i386/t-djgpp
@@ -4387,6 +4387,9 @@ case ${target} in
i[34567]86-*-gnu*)
tmake_file="$tmake_file i386/t-gnu"
;;
+ i[34567]86-*-msdosdjgpp*)
+ tmake_file="${tmake_file} i386/t-djgpp"
+ ;;
i[34567]86-*-solaris2* | x86_64-*-solaris2.1[0-9]*)
;;
i[34567]86-*-cygwin* | x86_64-*-cygwin*)
new file mode 100644
@@ -0,0 +1,50 @@
+/* Subroutines for DJGPP.
+ Contributed by Andris Pavenis <andris.pavenis@iki.fi>
+ Copyright (C) 2013 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC 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 3, or (at your option) any later
+version.
+
+GCC 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 GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "output.h"
+#include "lto-section-names.h"
+
+void
+i386_djgpp_asm_named_section(const char *name, unsigned int flags,
+ tree decl)
+{
+ char flagchars[8], *f = flagchars;
+
+(void)decl; /* silence warning. */
+
+ if (flags & SECTION_WRITE)
+ *f++ = 'w';
+ if (flags & SECTION_CODE)
+ *f++ = 'x';
+
+ /* LTO sections need 1-byte alignment to avoid confusing the
+ zlib decompression algorithm with trailing zero pad bytes. */
+ if (strncmp (name, LTO_SECTION_NAME_PREFIX,
+ strlen (LTO_SECTION_NAME_PREFIX)) == 0)
+ *f++ = '0';
+
+ *f++ = '\0';
+
+ fprintf (asm_out_file, "\t.section\t%s,\"%s\"\n", name, flagchars);
+}
@@ -17,12 +17,27 @@ You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
+#define DBX_DEBUGGING_INFO 1
+#define SDB_DEBUGGING_INFO 1
+
/* Support generation of DWARF2 debugging info. */
#define DWARF2_DEBUGGING_INFO 1
+/* Use DWARF2 debugging info by default: comment out following */
+/* 2 lines to default to COFF debugging info */
+#undef PREFERRED_DEBUGGING_TYPE
+#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
+
/* Don't assume anything about the header files. */
#define NO_IMPLICIT_EXTERN_C
+/* If defined, a C expression whose value is a string containing the
+ assembler operation to identify the following data as
+ uninitialized global data. If not defined, and neither
+ `ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined,
+ uninitialized global data will be output in the data section if
+ `-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be
+ used. */
#undef BSS_SECTION_ASM_OP
#define BSS_SECTION_ASM_OP "\t.section\t.bss"
@@ -30,6 +45,10 @@ along with GCC; see the file COPYING3. If not see
#undef DATA_SECTION_ASM_OP
#define DATA_SECTION_ASM_OP "\t.section .data"
+/* Define the name of the .ident op. */
+#undef TARGET_ASM_OUTPUT_IDENT
+#define TARGET_ASM_OUTPUT_IDENT default_asm_output_ident_directive
+
/* Enable alias attribute support. */
#ifndef SET_ASM_OP
#define SET_ASM_OP "\t.set\t"
@@ -39,56 +58,26 @@ along with GCC; see the file COPYING3. If not see
#undef TEXT_SECTION_ASM_OP
#define TEXT_SECTION_ASM_OP "\t.section .text"
-/* Define standard DJGPP installation paths. */
-/* We override default /usr or /usr/local part with /dev/env/DJDIR which */
-/* points to actual DJGPP installation directory. */
-
-/* Search for as.exe and ld.exe in DJGPP's binary directory. */
-#undef MD_EXEC_PREFIX
-#define MD_EXEC_PREFIX "/dev/env/DJDIR/bin/"
-
-/* Standard DJGPP library and startup files */
-#undef MD_STARTFILE_PREFIX
-#define MD_STARTFILE_PREFIX "/dev/env/DJDIR/lib/"
-
-/* Correctly handle absolute filename detection in cp/xref.c */
-#define FILE_NAME_ABSOLUTE_P(NAME) \
- (((NAME)[0] == '/') || ((NAME)[0] == '\\') || \
- (((NAME)[0] >= 'A') && ((NAME)[0] <= 'z') && ((NAME)[1] == ':')))
-
#define TARGET_OS_CPP_BUILTINS() \
do \
{ \
+ if (!flag_iso) \
+ builtin_define_with_int_value ("DJGPP",2); \
+ builtin_define_with_int_value ("__DJGPP",2); \
+ builtin_define_with_int_value ("__DJGPP__",2); \
builtin_define_std ("MSDOS"); \
builtin_define_std ("GO32"); \
+ builtin_define_std ("unix"); \
builtin_assert ("system=msdos"); \
} \
while (0)
/* Include <sys/version.h> so __DJGPP__ and __DJGPP_MINOR__ are defined. */
#undef CPP_SPEC
-#define CPP_SPEC "-remap %{posix:-D_POSIX_SOURCE} \
- -imacros %s../include/sys/version.h"
-
-/* We need to override link_command_spec in gcc.c so support -Tdjgpp.djl.
- This cannot be done in LINK_SPECS as that LINK_SPECS is processed
- before library search directories are known by the linker.
- This avoids problems when specs file is not available. An alternate way,
- suggested by Robert Hoehne, is to use SUBTARGET_EXTRA_SPECS instead.
-*/
-
-#undef LINK_COMMAND_SPEC
-#define LINK_COMMAND_SPEC \
-"%{!fsyntax-only: \
-%{!c:%{!M:%{!MM:%{!E:%{!S:%(linker) %l " LINK_COMPRESS_DEBUG_SPEC \
-"%X %{o*} %{e*} %{N} %{n} \
-\t%{r} %{s} %{t} %{u*} %{z} %{Z}\
-\t%{!nostdlib:%{!nostartfiles:%S}}\
-\t%{static:} %{L*} %D %o\
-\t%{!nostdlib:%{!nodefaultlibs:%G %L %G}}\
-\t%{!nostdlib:%{!nostartfiles:%E}}\
-\t-Tdjgpp.djl %{T*}}}}}}}\n\
-%{!c:%{!M:%{!MM:%{!E:%{!S:stubify %{v} %{o*:%*} %{!o*:a.out} }}}}}"
+#define CPP_SPEC "-remap %{posix:-D_POSIX_SOURCE}"
+
+#undef POST_LINK_SPEC
+#define POST_LINK_SPEC "stubify %{v} %{o*:%*} %{!o*:a.out}"
/* Always just link in 'libc.a'. */
#undef LIB_SPEC
@@ -98,12 +87,8 @@ along with GCC; see the file COPYING3. If not see
#undef STARTFILE_SPEC
#define STARTFILE_SPEC "%{pg:gcrt0.o%s}%{!pg:crt0.o%s}"
-/* Make sure that gcc will not look for .h files in /usr/local/include
- unless user explicitly requests it. */
-#undef LOCAL_INCLUDE_DIR
-
/* Switch into a generic section. */
-#define TARGET_ASM_NAMED_SECTION default_coff_asm_named_section
+#define TARGET_ASM_NAMED_SECTION i386_djgpp_asm_named_section
/* This is how to output an assembler line
that says to advance the location counter
@@ -129,7 +114,7 @@ along with GCC; see the file COPYING3. If not see
while (0)
#endif
-/* This is how to tell assembler that a symbol is weak */
+/* This is how to tell assembler that a symbol is weak */
#undef ASM_WEAKEN_LABEL
#define ASM_WEAKEN_LABEL(FILE,NAME) \
do { fputs ("\t.weak\t", FILE); assemble_name (FILE, NAME); \
@@ -159,23 +144,38 @@ along with GCC; see the file COPYING3. If not see
#undef PTRDIFF_TYPE
#define PTRDIFF_TYPE "int"
-/* Used to be defined in xm-djgpp.h, but moved here for cross-compilers. */
-#define LIBSTDCXX "stdcxx"
-
-/* Warn that -mbnu210 is now obsolete. */
-#undef SUBTARGET_OVERRIDE_OPTIONS
-#define SUBTARGET_OVERRIDE_OPTIONS \
-do \
- { \
- if (TARGET_BNU210) \
- { \
- warning (0, "-mbnu210 is ignored (option is obsolete)"); \
- } \
- } \
-while (0)
-
/* Support for C++ templates. */
#undef MAKE_DECL_ONE_ONLY
#define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
-#define IX86_MAYBE_NO_LIBGCC_TFMODE
+#undef DBX_REGISTER_NUMBER
+#define DBX_REGISTER_NUMBER(n) svr4_dbx_register_map[n]
+
+/* Default to pcc-struct-return. */
+#define DEFAULT_PCC_STRUCT_RETURN 1
+
+/* Ignore (with warning) -fPIC for DJGPP */
+#undef SUBTARGET_OVERRIDE_OPTIONS
+#define SUBTARGET_OVERRIDE_OPTIONS \
+ do { \
+ if (flag_pic) \
+ { \
+ fnotice(stdout, "-f%s ignored (not supported for DJGPP)\n", \
+ (flag_pic > 1) ? "PIC" : "pic"); \
+ flag_pic = 0; \
+ } \
+ \
+ /* Don't emit DWARF3/4 unless specifically selected. */ \
+ /* DWARF3/4 currently does not work for DJGPP. */ \
+ if (!global_options_set.x_dwarf_version) \
+ dwarf_version = 2; \
+ \
+ } \
+ while (0)
+
+/* Function protypes for gcc/i386/djgpp.c */
+
+void
+i386_djgpp_asm_named_section(const char *name, unsigned int flags,
+ tree decl);
+
@@ -18,11 +18,5 @@
; along with GCC; see the file COPYING3. If not see
; <http://www.gnu.org/licenses/>.
-;; -mbnu210 is now ignored and obsolete. It was used to enable support for
-;; weak symbols, and .gnu.linkonce support.
-mbnu210
-Target Var(TARGET_BNU210)
-Ignored (obsolete).
-
posix
Driver
new file mode 100644
@@ -0,0 +1,8 @@
+
+EXTRA_OBJS += djgpp.o
+
+djgpp.o: $(srcdir)/config/i386/djgpp.c $(CONFIG_H) $(SYSTEM_H) coretypes.h \
+ $(TM_H) $(RTL_H) $(REGS_H) hard-reg-set.h output.h $(TREE_H) flags.h \
+ $(TM_P_H) $(HASH_TABLE_H) $(GGC_H) $(LTO_STREAMER_H)
+ $(COMPILER) -c $(ALL_COMPILERFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) \
+ $(srcdir)/config/i386/djgpp.c
@@ -22,6 +22,31 @@ along with GCC; see the file COPYING3. If not see
#define HOST_EXECUTABLE_SUFFIX ".exe"
+/* Define standard DJGPP installation paths. */
+/* We override default /usr or /usr/local part with /dev/env/DJDIR which */
+/* points to actual DJGPP installation directory. */
+
+/* Native system include directory */
+#undef NATIVE_SYSTEM_HEADER_DIR
+#define NATIVE_SYSTEM_HEADER_DIR "/dev/env/DJDIR/include/"
+
+/* Search for as.exe and ld.exe in DJGPP's binary directory. */
+#undef MD_EXEC_PREFIX
+#define MD_EXEC_PREFIX "/dev/env/DJDIR/bin/"
+
+/* Standard DJGPP library and startup files */
+#undef STANDARD_STARTFILE_PREFIX_1
+#define STANDARD_STARTFILE_PREFIX_1 "/dev/env/DJDIR/lib/"
+
+/* Define STANDARD_STARTFILE_PREFIX_2 equal to STANDARD_STARTFILE_PREFIX_1
+ to avoid gcc.c redefining it to /usr/lib */
+#undef STANDARD_STARTFILE_PREFIX_2
+#define STANDARD_STARTFILE_PREFIX_1 "/dev/env/DJDIR/lib/"
+
+/* Make sure that gcc will not look for .h files in /usr/local/include
+ unless user explicitly requests it. */
+#undef LOCAL_INCLUDE_DIR
+
/* System dependent initialization for collect2
to tell system() to act like Unix. */
#define COLLECT2_HOST_INITIALIZATION \
@@ -57,12 +82,12 @@ along with GCC; see the file COPYING3. If not see
to try and figure out what's wrong. */ \
char *djgpp = getenv ("DJGPP"); \
if (djgpp == NULL) \
- fatal ("environment variable DJGPP not defined"); \
+ fatal_error (UNKNOWN_LOCATION, "environment variable DJGPP not defined"); \
else if (access (djgpp, R_OK) == 0) \
- fatal ("environment variable DJGPP points to missing file '%s'", \
+ fatal_error (UNKNOWN_LOCATION, "environment variable DJGPP points to missing file '%s'", \
djgpp); \
else \
- fatal ("environment variable DJGPP points to corrupt file '%s'", \
+ fatal_error (UNKNOWN_LOCATION, "environment variable DJGPP points to corrupt file '%s'", \
djgpp); \
} \
} while (0)
@@ -80,4 +105,11 @@ along with GCC; see the file COPYING3. If not see
_fixpath ((PATH), fixed_path); \
strcat (fixed_path, "/"); \
(PATH) = xstrdup (fixed_path); \
- }
+ }
+
+#undef MAX_OFILE_ALIGNMENT
+#define MAX_OFILE_ALIGNMENT 128
+
+/* DJGPP versions up to current (2.05) have ftw.h but only ftw() not nftw().
+ Disable use of ftw.h */
+#undef HAVE_FTW_H
--
2.4.3