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config.gcc: Add arm*-*-uclinux-*eabi.

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2007-02-13  Paul Brook  <paul@codesourcery.com>

	gcc/
	* config.gcc: Add arm*-*-uclinux-*eabi.
	* config/arm/uclinux-elf.h (TARGET_OS_CPP_BUILTINS): Define.
	(SUBTARGET_EXTRA_LINK_SPEC): Define.
	(STARTFILE_SPEC, ENDFILE_SPEC): Remove broken -shared handling.
	(LINK_GCC_C_SEQUENCE_SPEC): Undef.
	(LINK_SPEC): Define.
	(LIB_SPEC): Define.
	* config/arm/arm.c (arm_override_options): Use r9 as EABI PIC
	register.
	* config/arm/uclinux-eabi.h: New file.
	* config/arm/linux-eabi.h (WCHAR_TYPE): Remove.
	* config/arm/linux-gas.h (WCHAR_TYPE): Use unsigned long on AAPCS
	based targets.

From-SVN: r121902
This commit is contained in:
Paul Brook 2007-02-14 00:29:52 +00:00 committed by Paul Brook
parent 2f0fa07cd9
commit c147eacb9d
7 changed files with 134 additions and 31 deletions
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16
gcc/ChangeLog
View File

@ -1,3 +1,19 @@
2007-02-13 Paul Brook <paul@codesourcery.com>
* config.gcc: Add arm*-*-uclinux-*eabi.
* config/arm/uclinux-elf.h (TARGET_OS_CPP_BUILTINS): Define.
(SUBTARGET_EXTRA_LINK_SPEC): Define.
(STARTFILE_SPEC, ENDFILE_SPEC): Remove broken -shared handling.
(LINK_GCC_C_SEQUENCE_SPEC): Undef.
(LINK_SPEC): Define.
(LIB_SPEC): Define.
* config/arm/arm.c (arm_override_options): Use r9 as EABI PIC
register.
* config/arm/uclinux-eabi.h: New file.
* config/arm/linux-eabi.h (WCHAR_TYPE): Remove.
* config/arm/linux-gas.h (WCHAR_TYPE): Use unsigned long on AAPCS
based targets.
2007-02-13 Ian Lance Taylor <iant@google.com>
* common.opt: Add Wstrict-overflow and Wstrict-overflow=.

14
gcc/config.gcc
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@ -731,8 +731,20 @@ arm*-*-linux*) # ARM GNU/Linux with ELF
tm_file="$tm_file arm/aout.h arm/arm.h"
;;
arm*-*-uclinux*) # ARM ucLinux
tm_file="dbxelf.h elfos.h arm/unknown-elf.h arm/elf.h arm/aout.h arm/arm.h arm/linux-gas.h arm/linux-elf.h arm/uclinux-elf.h"
tm_file="dbxelf.h elfos.h arm/unknown-elf.h arm/elf.h arm/linux-gas.h arm/uclinux-elf.h arm/uclinux-elf.h"
tmake_file="arm/t-arm arm/t-arm-elf"
case ${target} in
arm*-*-uclinux-*eabi)
tm_file="$tm_file arm/bpabi.h arm/uclinux-eabi.h"
tmake_file="$tmake_file arm/t-bpabi"
# The BPABI long long divmod functions return a 128-bit value in
# registers r0-r3. Correctly modeling that requires the use of
# TImode.
need_64bit_hwint=yes
# The EABI requires the use of __cxa_atexit.
default_use_cxa_atexit=yes
esac
tm_file="$tm_file arm/aout.h arm/arm.h"
;;
arm*-*-ecos-elf)
tm_file="dbxelf.h elfos.h arm/unknown-elf.h arm/elf.h arm/aout.h arm/arm.h arm/ecos-elf.h"

10
gcc/config/arm/arm.c
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@ -1145,11 +1145,6 @@ arm_override_options (void)
&& (TARGET_DEFAULT & MASK_APCS_FRAME))
warning (0, "-g with -mno-apcs-frame may not give sensible debugging");
/* If stack checking is disabled, we can use r10 as the PIC register,
which keeps r9 available. */
if (flag_pic && TARGET_SINGLE_PIC_BASE)
arm_pic_register = TARGET_APCS_STACK ? 9 : 10;
if (TARGET_APCS_FLOAT)
warning (0, "passing floating point arguments in fp regs not yet supported");
@ -1343,6 +1338,11 @@ arm_override_options (void)
ARM_DOUBLEWORD_ALIGN ? "8, 32 or 64": "8 or 32");
}
/* If stack checking is disabled, we can use r10 as the PIC register,
which keeps r9 available. The EABI specifies r9 as the PIC register. */
if (flag_pic && TARGET_SINGLE_PIC_BASE)
arm_pic_register = (TARGET_APCS_STACK || TARGET_AAPCS_BASED) ? 9 : 10;
if (arm_pic_register_string != NULL)
{
int pic_register = decode_reg_name (arm_pic_register_string);

5
gcc/config/arm/linux-eabi.h
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@ -64,11 +64,6 @@
do not use -lfloat. */
#undef LIBGCC_SPEC
/* Use the AAPCS type for wchar_t, or the previous Linux default for
non-AAPCS. */
#undef WCHAR_TYPE
#define WCHAR_TYPE (TARGET_AAPCS_BASED ? "unsigned int" : "long int")
/* Clear the instruction cache from `beg' to `end'. This makes an
inline system call to SYS_cacheflush. It is modified to work with
both the original and EABI-only syscall interfaces. */

6
gcc/config/arm/linux-gas.h
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@ -36,8 +36,10 @@
#undef PTRDIFF_TYPE
#define PTRDIFF_TYPE "int"
#undef WCHAR_TYPE
#define WCHAR_TYPE "long int"
/* Use the AAPCS type for wchar_t, or the previous Linux default for
non-AAPCS. */
#undef WCHAR_TYPE
#define WCHAR_TYPE (TARGET_AAPCS_BASED ? "unsigned int" : "long int")
#undef WCHAR_TYPE_SIZE
#define WCHAR_TYPE_SIZE BITS_PER_WORD

66
gcc/config/arm/uclinux-eabi.h Normal file
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@ -0,0 +1,66 @@
/* Definitions for ARM EABI ucLinux
Copyright (C) 2006 Free Software Foundation, Inc.
Contributed by Paul Brook <paul@codesourcery.com>
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 2, 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 this program; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* Override settings that are different to the uclinux-elf or
bpabi defaults. */
#undef TARGET_DEFAULT
#define TARGET_DEFAULT (MASK_SINGLE_PIC_BASE | MASK_INTERWORK)
/* On EABI GNU/Linux, we want both the BPABI builtins and the
GNU/Linux builtins. */
#undef TARGET_OS_CPP_BUILTINS
#define TARGET_OS_CPP_BUILTINS() \
do \
{ \
TARGET_BPABI_CPP_BUILTINS(); \
builtin_define ("__uClinux__"); \
builtin_define ("__gnu_linux__"); \
builtin_define_std ("linux"); \
builtin_define_std ("unix"); \
builtin_assert ("system=linux"); \
builtin_assert ("system=unix"); \
builtin_assert ("system=posix"); \
} \
while (false)
#undef SUBTARGET_EXTRA_LINK_SPEC
#define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux_eabi"
/* We default to the "aapcs-linux" ABI so that enums are int-sized by
default. */
#undef ARM_DEFAULT_ABI
#define ARM_DEFAULT_ABI ARM_ABI_AAPCS_LINUX
/* Clear the instruction cache from `beg' to `end'. This makes an
inline system call to SYS_cacheflush. */
#undef CLEAR_INSN_CACHE
#define CLEAR_INSN_CACHE(BEG, END) \
{ \
register unsigned long _beg __asm ("a1") = (unsigned long) (BEG); \
register unsigned long _end __asm ("a2") = (unsigned long) (END); \
register unsigned long _flg __asm ("a3") = 0; \
register unsigned long _scno __asm ("r7") = 0xf0002; \
__asm __volatile ("swi 0x0 @ sys_cacheflush" \
: "=r" (_beg) \
: "0" (_beg), "r" (_end), "r" (_flg), "r" (_scno)); \
}

48
gcc/config/arm/uclinux-elf.h
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@ -32,6 +32,21 @@
/* NOTE: The remaining definitions in this file are needed because uclinux
does not use config/linux.h. */
/* Add GNU/Linux builtins. */
#undef TARGET_OS_CPP_BUILTINS
#define TARGET_OS_CPP_BUILTINS() \
do \
{ \
builtin_define ("__uClinux__"); \
builtin_define ("__gnu_linux__"); \
builtin_define_std ("linux"); \
builtin_define_std ("unix"); \
builtin_assert ("system=linux"); \
builtin_assert ("system=unix"); \
builtin_assert ("system=posix"); \
} \
while (false)
/* Do not assume anything about header files. */
#define NO_IMPLICIT_EXTERN_C
@ -39,32 +54,20 @@
#undef CPLUSPLUS_CPP_SPEC
#define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
/* Provide a STARTFILE_SPEC appropriate for GNU/Linux. Here we add
the GNU/Linux magical crtbegin.o file (see crtstuff.c) which
provides part of the support for getting C++ file-scope static
object constructed before entering `main'. */
#undef SUBTARGET_EXTRA_LINK_SPEC
#define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux"
/* Now we define the strings used to build the spec file. */
#undef STARTFILE_SPEC
#define STARTFILE_SPEC \
"%{!shared: \
%{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} \
%{!p:%{profile:gcrt1.o%s} \
%{!profile:crt1.o%s}}}} \
crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
/* Provide a ENDFILE_SPEC appropriate for GNU/Linux. Here we tack on
the GNU/Linux magical crtend.o file (see crtstuff.c) which
provides part of the support for getting C++ file-scope static
object constructed before entering `main', followed by a normal
GNU/Linux "finalizer" file, `crtn.o'. */
#define STARTFILE_SPEC "crt1%O%s crti%O%s crtbegin%O%s"
#undef ENDFILE_SPEC
#define ENDFILE_SPEC \
"%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
#define ENDFILE_SPEC "crtend%O%s crtn%O%s"
#undef CC1_SPEC
#define CC1_SPEC "%{profile:-p}"
#undef LINK_GCC_C_SEQUENCE_SPEC
#define LINK_GCC_C_SEQUENCE_SPEC \
"%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
@ -72,3 +75,12 @@
#ifdef HAVE_LD_AS_NEEDED
#define USE_LD_AS_NEEDED 1
#endif
#undef LINK_SPEC
#define LINK_SPEC "%{mbig-endian:-EB} %{mlittle-endian:-EL} -X -elf2flt"
#undef LIB_SPEC
#define LIB_SPEC \
"%{pthread:-lpthread} \
%{shared:-lc} \
%{!shared:%{profile:-lc_p}%{!profile:-lc}}"