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282 |
jeremybenn |
/* Definitions of target machine for GNU compiler,
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for 64 bit PowerPC linux.
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Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
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2009, 2010 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published
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by the Free Software Foundation; either version 3, or (at your
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option) any later version.
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GCC is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef RS6000_BI_ARCH
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#undef DEFAULT_ABI
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#define DEFAULT_ABI ABI_AIX
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#undef TARGET_64BIT
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#define TARGET_64BIT 1
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#define DEFAULT_ARCH64_P 1
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#define RS6000_BI_ARCH_P 0
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#else
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#define DEFAULT_ARCH64_P (TARGET_DEFAULT & MASK_64BIT)
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#define RS6000_BI_ARCH_P 1
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#endif
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#ifdef IN_LIBGCC2
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#undef TARGET_64BIT
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#ifdef __powerpc64__
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#define TARGET_64BIT 1
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#else
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#define TARGET_64BIT 0
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#endif
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#endif
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#undef TARGET_AIX
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#define TARGET_AIX TARGET_64BIT
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#ifdef HAVE_LD_NO_DOT_SYMS
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/* New ABI uses a local sym for the function entry point. */
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extern int dot_symbols;
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#undef DOT_SYMBOLS
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#define DOT_SYMBOLS dot_symbols
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#endif
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#define TARGET_PROFILE_KERNEL profile_kernel
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#undef PROCESSOR_DEFAULT
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#define PROCESSOR_DEFAULT PROCESSOR_POWER6
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#undef PROCESSOR_DEFAULT64
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#define PROCESSOR_DEFAULT64 PROCESSOR_POWER6
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/* We don't need to generate entries in .fixup, except when
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-mrelocatable or -mrelocatable-lib is given. */
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#undef RELOCATABLE_NEEDS_FIXUP
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#define RELOCATABLE_NEEDS_FIXUP \
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(target_flags & target_flags_explicit & MASK_RELOCATABLE)
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#undef RS6000_ABI_NAME
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#define RS6000_ABI_NAME "linux"
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#define INVALID_64BIT "-m%s not supported in this configuration"
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#define INVALID_32BIT INVALID_64BIT
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#undef SUBSUBTARGET_OVERRIDE_OPTIONS
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#define SUBSUBTARGET_OVERRIDE_OPTIONS \
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do \
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{ \
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if (!rs6000_explicit_options.alignment) \
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rs6000_alignment_flags = MASK_ALIGN_NATURAL; \
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if (TARGET_64BIT) \
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{ \
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if (DEFAULT_ABI != ABI_AIX) \
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{ \
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rs6000_current_abi = ABI_AIX; \
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error (INVALID_64BIT, "call"); \
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} \
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dot_symbols = !strcmp (rs6000_abi_name, "aixdesc"); \
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if (target_flags & MASK_RELOCATABLE) \
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{ \
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target_flags &= ~MASK_RELOCATABLE; \
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error (INVALID_64BIT, "relocatable"); \
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} \
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if (target_flags & MASK_EABI) \
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{ \
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target_flags &= ~MASK_EABI; \
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error (INVALID_64BIT, "eabi"); \
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} \
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if (TARGET_PROTOTYPE) \
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{ \
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target_prototype = 0; \
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error (INVALID_64BIT, "prototype"); \
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} \
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if ((target_flags & MASK_POWERPC64) == 0) \
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{ \
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target_flags |= MASK_POWERPC64; \
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error ("-m64 requires a PowerPC64 cpu"); \
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} \
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} \
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else \
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{ \
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if (!RS6000_BI_ARCH_P) \
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error (INVALID_32BIT, "32"); \
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if (TARGET_PROFILE_KERNEL) \
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{ \
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TARGET_PROFILE_KERNEL = 0; \
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error (INVALID_32BIT, "profile-kernel"); \
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} \
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} \
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} \
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while (0)
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#ifdef RS6000_BI_ARCH
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#undef OVERRIDE_OPTIONS
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#define OVERRIDE_OPTIONS \
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rs6000_override_options (((TARGET_DEFAULT ^ target_flags) & MASK_64BIT) \
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? (char *) 0 : TARGET_CPU_DEFAULT)
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#endif
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#undef ASM_DEFAULT_SPEC
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#undef ASM_SPEC
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#undef LINK_OS_LINUX_SPEC
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/* FIXME: This will quite possibly choose the wrong dynamic linker. */
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#undef LINK_OS_GNU_SPEC
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#define LINK_OS_GNU_SPEC LINK_OS_LINUX_SPEC
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#ifndef RS6000_BI_ARCH
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#define ASM_DEFAULT_SPEC "-mppc64"
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#define ASM_SPEC "%(asm_spec64) %(asm_spec_common)"
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#define LINK_OS_LINUX_SPEC "%(link_os_linux_spec64)"
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#else
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#if DEFAULT_ARCH64_P
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#define ASM_DEFAULT_SPEC "-mppc%{!m32:64}"
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#define ASM_SPEC "%{m32:%(asm_spec32)}%{!m32:%(asm_spec64)} %(asm_spec_common)"
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#define LINK_OS_LINUX_SPEC "%{m32:%(link_os_linux_spec32)}%{!m32:%(link_os_linux_spec64)}"
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#else
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#define ASM_DEFAULT_SPEC "-mppc%{m64:64}"
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#define ASM_SPEC "%{!m64:%(asm_spec32)}%{m64:%(asm_spec64)} %(asm_spec_common)"
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#define LINK_OS_LINUX_SPEC "%{!m64:%(link_os_linux_spec32)}%{m64:%(link_os_linux_spec64)}"
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#endif
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#endif
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#define ASM_SPEC32 "-a32 %{n} %{T} %{Ym,*} %{Yd,*} \
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%{mrelocatable} %{mrelocatable-lib} %{fpic:-K PIC} %{fPIC:-K PIC} \
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%{memb} %{!memb: %{msdata=eabi: -memb}} \
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%{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
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%{mcall-freebsd: -mbig} \
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%{mcall-i960-old: -mlittle} \
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%{mcall-linux: -mbig} \
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%{mcall-gnu: -mbig} \
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%{mcall-netbsd: -mbig} \
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}}}}"
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#define ASM_SPEC64 "-a64"
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#define ASM_SPEC_COMMON "%(asm_cpu) \
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%{,assembler|,assembler-with-cpp: %{mregnames} %{mno-regnames}} \
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%{v:-V} %{Qy:} %{!Qn:-Qy} %{Wa,*:%*} \
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%{mlittle} %{mlittle-endian} %{mbig} %{mbig-endian}"
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#undef SUBSUBTARGET_EXTRA_SPECS
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#define SUBSUBTARGET_EXTRA_SPECS \
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{ "asm_spec_common", ASM_SPEC_COMMON }, \
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{ "asm_spec32", ASM_SPEC32 }, \
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{ "asm_spec64", ASM_SPEC64 }, \
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{ "link_os_linux_spec32", LINK_OS_LINUX_SPEC32 }, \
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{ "link_os_linux_spec64", LINK_OS_LINUX_SPEC64 },
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#undef MULTILIB_DEFAULTS
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#if DEFAULT_ARCH64_P
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#define MULTILIB_DEFAULTS { "m64" }
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#else
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#define MULTILIB_DEFAULTS { "m32" }
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#endif
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#ifndef RS6000_BI_ARCH
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/* 64-bit PowerPC Linux is always big-endian. */
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#undef TARGET_LITTLE_ENDIAN
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#define TARGET_LITTLE_ENDIAN 0
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/* 64-bit PowerPC Linux always has a TOC. */
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#undef TARGET_TOC
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#define TARGET_TOC 1
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/* Some things from sysv4.h we don't do when 64 bit. */
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#undef TARGET_RELOCATABLE
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#define TARGET_RELOCATABLE 0
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#undef TARGET_EABI
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#define TARGET_EABI 0
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#undef TARGET_PROTOTYPE
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#define TARGET_PROTOTYPE 0
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#undef RELOCATABLE_NEEDS_FIXUP
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#define RELOCATABLE_NEEDS_FIXUP 0
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| 217 |
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#endif
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| 219 |
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/* We use glibc _mcount for profiling. */
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#define NO_PROFILE_COUNTERS 1
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#define PROFILE_HOOK(LABEL) \
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do { if (TARGET_64BIT) output_profile_hook (LABEL); } while (0)
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| 224 |
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/* PowerPC64 Linux word-aligns FP doubles when -malign-power is given. */
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#undef ADJUST_FIELD_ALIGN
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#define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \
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((TARGET_ALTIVEC && TREE_CODE (TREE_TYPE (FIELD)) == VECTOR_TYPE) \
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? 128 \
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: (TARGET_64BIT \
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&& TARGET_ALIGN_NATURAL == 0 \
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&& TYPE_MODE (strip_array_types (TREE_TYPE (FIELD))) == DFmode) \
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? MIN ((COMPUTED), 32) \
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: (COMPUTED))
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| 234 |
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| 235 |
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/* PowerPC64 Linux increases natural record alignment to doubleword if
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the first field is an FP double, only if in power alignment mode. */
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| 237 |
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#undef ROUND_TYPE_ALIGN
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| 238 |
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#define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED) \
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((TARGET_64BIT \
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| 240 |
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&& (TREE_CODE (STRUCT) == RECORD_TYPE \
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| 241 |
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|| TREE_CODE (STRUCT) == UNION_TYPE \
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| 242 |
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|| TREE_CODE (STRUCT) == QUAL_UNION_TYPE) \
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| 243 |
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&& TARGET_ALIGN_NATURAL == 0) \
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| 244 |
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? rs6000_special_round_type_align (STRUCT, COMPUTED, SPECIFIED) \
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| 245 |
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: MAX ((COMPUTED), (SPECIFIED)))
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| 246 |
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| 247 |
|
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/* Use the default for compiling target libs. */
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| 248 |
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#ifdef IN_TARGET_LIBS
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| 249 |
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#undef TARGET_ALIGN_NATURAL
|
| 250 |
|
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#define TARGET_ALIGN_NATURAL 1
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| 251 |
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#endif
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| 252 |
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| 253 |
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/* Indicate that jump tables go in the text section. */
|
| 254 |
|
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#undef JUMP_TABLES_IN_TEXT_SECTION
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| 255 |
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#define JUMP_TABLES_IN_TEXT_SECTION TARGET_64BIT
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| 256 |
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| 257 |
|
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/* The linux ppc64 ABI isn't explicit on whether aggregates smaller
|
| 258 |
|
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than a doubleword should be padded upward or downward. You could
|
| 259 |
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reasonably assume that they follow the normal rules for structure
|
| 260 |
|
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layout treating the parameter area as any other block of memory,
|
| 261 |
|
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then map the reg param area to registers. i.e. pad upward.
|
| 262 |
|
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Setting both of the following defines results in this behavior.
|
| 263 |
|
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Setting just the first one will result in aggregates that fit in a
|
| 264 |
|
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doubleword being padded downward, and others being padded upward.
|
| 265 |
|
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Not a bad idea as this results in struct { int x; } being passed
|
| 266 |
|
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the same way as an int. */
|
| 267 |
|
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#define AGGREGATE_PADDING_FIXED TARGET_64BIT
|
| 268 |
|
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#define AGGREGATES_PAD_UPWARD_ALWAYS 0
|
| 269 |
|
|
|
| 270 |
|
|
/* Specify padding for the last element of a block move between
|
| 271 |
|
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registers and memory. FIRST is nonzero if this is the only
|
| 272 |
|
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element. */
|
| 273 |
|
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#define BLOCK_REG_PADDING(MODE, TYPE, FIRST) \
|
| 274 |
|
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(!(FIRST) ? upward : FUNCTION_ARG_PADDING (MODE, TYPE))
|
| 275 |
|
|
|
| 276 |
|
|
/* __throw will restore its own return address to be the same as the
|
| 277 |
|
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return address of the function that the throw is being made to.
|
| 278 |
|
|
This is unfortunate, because we want to check the original
|
| 279 |
|
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return address to see if we need to restore the TOC.
|
| 280 |
|
|
So we have to squirrel it away with this. */
|
| 281 |
|
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#define SETUP_FRAME_ADDRESSES() \
|
| 282 |
|
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do { if (TARGET_64BIT) rs6000_aix_emit_builtin_unwind_init (); } while (0)
|
| 283 |
|
|
|
| 284 |
|
|
/* Override svr4.h */
|
| 285 |
|
|
#undef MD_EXEC_PREFIX
|
| 286 |
|
|
#undef MD_STARTFILE_PREFIX
|
| 287 |
|
|
|
| 288 |
|
|
/* Linux doesn't support saving and restoring 64-bit regs in a 32-bit
|
| 289 |
|
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process. */
|
| 290 |
|
|
#define OS_MISSING_POWERPC64 !TARGET_64BIT
|
| 291 |
|
|
|
| 292 |
|
|
/* glibc has float and long double forms of math functions. */
|
| 293 |
|
|
#undef TARGET_C99_FUNCTIONS
|
| 294 |
|
|
#define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
|
| 295 |
|
|
|
| 296 |
|
|
/* Whether we have sincos that follows the GNU extension. */
|
| 297 |
|
|
#undef TARGET_HAS_SINCOS
|
| 298 |
|
|
#define TARGET_HAS_SINCOS (OPTION_GLIBC)
|
| 299 |
|
|
|
| 300 |
|
|
#undef TARGET_OS_CPP_BUILTINS
|
| 301 |
|
|
#define TARGET_OS_CPP_BUILTINS() \
|
| 302 |
|
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do \
|
| 303 |
|
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{ \
|
| 304 |
|
|
if (TARGET_64BIT) \
|
| 305 |
|
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{ \
|
| 306 |
|
|
builtin_define ("__PPC__"); \
|
| 307 |
|
|
builtin_define ("__PPC64__"); \
|
| 308 |
|
|
builtin_define ("__powerpc__"); \
|
| 309 |
|
|
builtin_define ("__powerpc64__"); \
|
| 310 |
|
|
builtin_assert ("cpu=powerpc64"); \
|
| 311 |
|
|
builtin_assert ("machine=powerpc64"); \
|
| 312 |
|
|
} \
|
| 313 |
|
|
else \
|
| 314 |
|
|
{ \
|
| 315 |
|
|
builtin_define_std ("PPC"); \
|
| 316 |
|
|
builtin_define_std ("powerpc"); \
|
| 317 |
|
|
builtin_assert ("cpu=powerpc"); \
|
| 318 |
|
|
builtin_assert ("machine=powerpc"); \
|
| 319 |
|
|
TARGET_OS_SYSV_CPP_BUILTINS (); \
|
| 320 |
|
|
} \
|
| 321 |
|
|
} \
|
| 322 |
|
|
while (0)
|
| 323 |
|
|
|
| 324 |
|
|
#undef CPP_OS_DEFAULT_SPEC
|
| 325 |
|
|
#define CPP_OS_DEFAULT_SPEC "%(cpp_os_linux)"
|
| 326 |
|
|
|
| 327 |
|
|
/* The GNU C++ standard library currently requires _GNU_SOURCE being
|
| 328 |
|
|
defined on glibc-based systems. This temporary hack accomplishes this,
|
| 329 |
|
|
it should go away as soon as libstdc++-v3 has a real fix. */
|
| 330 |
|
|
#undef CPLUSPLUS_CPP_SPEC
|
| 331 |
|
|
#define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
|
| 332 |
|
|
|
| 333 |
|
|
#undef LINK_SHLIB_SPEC
|
| 334 |
|
|
#define LINK_SHLIB_SPEC "%{shared:-shared} %{!shared: %{static:-static}}"
|
| 335 |
|
|
|
| 336 |
|
|
#undef LIB_DEFAULT_SPEC
|
| 337 |
|
|
#define LIB_DEFAULT_SPEC "%(lib_linux)"
|
| 338 |
|
|
|
| 339 |
|
|
#undef STARTFILE_DEFAULT_SPEC
|
| 340 |
|
|
#define STARTFILE_DEFAULT_SPEC "%(startfile_linux)"
|
| 341 |
|
|
|
| 342 |
|
|
#undef ENDFILE_DEFAULT_SPEC
|
| 343 |
|
|
#define ENDFILE_DEFAULT_SPEC "%(endfile_linux)"
|
| 344 |
|
|
|
| 345 |
|
|
#undef LINK_START_DEFAULT_SPEC
|
| 346 |
|
|
#define LINK_START_DEFAULT_SPEC "%(link_start_linux)"
|
| 347 |
|
|
|
| 348 |
|
|
#undef LINK_OS_DEFAULT_SPEC
|
| 349 |
|
|
#define LINK_OS_DEFAULT_SPEC "%(link_os_linux)"
|
| 350 |
|
|
|
| 351 |
|
|
#define GLIBC_DYNAMIC_LINKER32 "/lib/ld.so.1"
|
| 352 |
|
|
#define GLIBC_DYNAMIC_LINKER64 "/lib64/ld64.so.1"
|
| 353 |
|
|
#define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
|
| 354 |
|
|
#define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
|
| 355 |
|
|
#if UCLIBC_DEFAULT
|
| 356 |
|
|
#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:%{muclibc:%e-mglibc and -muclibc used together}" G ";:" U "}"
|
| 357 |
|
|
#else
|
| 358 |
|
|
#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:%{mglibc:%e-mglibc and -muclibc used together}" U ";:" G "}"
|
| 359 |
|
|
#endif
|
| 360 |
|
|
#define LINUX_DYNAMIC_LINKER32 \
|
| 361 |
|
|
CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
|
| 362 |
|
|
#define LINUX_DYNAMIC_LINKER64 \
|
| 363 |
|
|
CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
|
| 364 |
|
|
|
| 365 |
|
|
|
| 366 |
|
|
#define LINK_OS_LINUX_SPEC32 "-m elf32ppclinux %{!shared: %{!static: \
|
| 367 |
|
|
%{rdynamic:-export-dynamic} \
|
| 368 |
|
|
%{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER32 "}}}"
|
| 369 |
|
|
|
| 370 |
|
|
#define LINK_OS_LINUX_SPEC64 "-m elf64ppc %{!shared: %{!static: \
|
| 371 |
|
|
%{rdynamic:-export-dynamic} \
|
| 372 |
|
|
%{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER64 "}}}"
|
| 373 |
|
|
|
| 374 |
|
|
#undef TOC_SECTION_ASM_OP
|
| 375 |
|
|
#define TOC_SECTION_ASM_OP \
|
| 376 |
|
|
(TARGET_64BIT \
|
| 377 |
|
|
? "\t.section\t\".toc\",\"aw\"" \
|
| 378 |
|
|
: "\t.section\t\".got\",\"aw\"")
|
| 379 |
|
|
|
| 380 |
|
|
#undef MINIMAL_TOC_SECTION_ASM_OP
|
| 381 |
|
|
#define MINIMAL_TOC_SECTION_ASM_OP \
|
| 382 |
|
|
(TARGET_64BIT \
|
| 383 |
|
|
? "\t.section\t\".toc1\",\"aw\"" \
|
| 384 |
|
|
: ((TARGET_RELOCATABLE || flag_pic) \
|
| 385 |
|
|
? "\t.section\t\".got2\",\"aw\"" \
|
| 386 |
|
|
: "\t.section\t\".got1\",\"aw\""))
|
| 387 |
|
|
|
| 388 |
|
|
#undef TARGET_VERSION
|
| 389 |
|
|
#define TARGET_VERSION fprintf (stderr, " (PowerPC64 GNU/Linux)");
|
| 390 |
|
|
|
| 391 |
|
|
/* Must be at least as big as our pointer type. */
|
| 392 |
|
|
#undef SIZE_TYPE
|
| 393 |
|
|
#define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "unsigned int")
|
| 394 |
|
|
|
| 395 |
|
|
#undef PTRDIFF_TYPE
|
| 396 |
|
|
#define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int")
|
| 397 |
|
|
|
| 398 |
|
|
#undef WCHAR_TYPE
|
| 399 |
|
|
#define WCHAR_TYPE (TARGET_64BIT ? "int" : "long int")
|
| 400 |
|
|
#undef WCHAR_TYPE_SIZE
|
| 401 |
|
|
#define WCHAR_TYPE_SIZE 32
|
| 402 |
|
|
|
| 403 |
|
|
/* Override rs6000.h definition. */
|
| 404 |
|
|
#undef ASM_APP_ON
|
| 405 |
|
|
#define ASM_APP_ON "#APP\n"
|
| 406 |
|
|
|
| 407 |
|
|
/* Override rs6000.h definition. */
|
| 408 |
|
|
#undef ASM_APP_OFF
|
| 409 |
|
|
#define ASM_APP_OFF "#NO_APP\n"
|
| 410 |
|
|
|
| 411 |
|
|
/* PowerPC no-op instruction. */
|
| 412 |
|
|
#undef RS6000_CALL_GLUE
|
| 413 |
|
|
#define RS6000_CALL_GLUE (TARGET_64BIT ? "nop" : "cror 31,31,31")
|
| 414 |
|
|
|
| 415 |
|
|
#undef RS6000_MCOUNT
|
| 416 |
|
|
#define RS6000_MCOUNT "_mcount"
|
| 417 |
|
|
|
| 418 |
|
|
#ifdef __powerpc64__
|
| 419 |
|
|
/* _init and _fini functions are built from bits spread across many
|
| 420 |
|
|
object files, each potentially with a different TOC pointer. For
|
| 421 |
|
|
that reason, place a nop after the call so that the linker can
|
| 422 |
|
|
restore the TOC pointer if a TOC adjusting call stub is needed. */
|
| 423 |
|
|
#if DOT_SYMBOLS
|
| 424 |
|
|
#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
|
| 425 |
|
|
asm (SECTION_OP "\n" \
|
| 426 |
|
|
" bl ." #FUNC "\n" \
|
| 427 |
|
|
" nop\n" \
|
| 428 |
|
|
" .previous");
|
| 429 |
|
|
#else
|
| 430 |
|
|
#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
|
| 431 |
|
|
asm (SECTION_OP "\n" \
|
| 432 |
|
|
" bl " #FUNC "\n" \
|
| 433 |
|
|
" nop\n" \
|
| 434 |
|
|
" .previous");
|
| 435 |
|
|
#endif
|
| 436 |
|
|
#endif
|
| 437 |
|
|
|
| 438 |
|
|
/* FP save and restore routines. */
|
| 439 |
|
|
#undef SAVE_FP_PREFIX
|
| 440 |
|
|
#define SAVE_FP_PREFIX (TARGET_64BIT ? "._savef" : "_savefpr_")
|
| 441 |
|
|
#undef SAVE_FP_SUFFIX
|
| 442 |
|
|
#define SAVE_FP_SUFFIX ""
|
| 443 |
|
|
#undef RESTORE_FP_PREFIX
|
| 444 |
|
|
#define RESTORE_FP_PREFIX (TARGET_64BIT ? "._restf" : "_restfpr_")
|
| 445 |
|
|
#undef RESTORE_FP_SUFFIX
|
| 446 |
|
|
#define RESTORE_FP_SUFFIX ""
|
| 447 |
|
|
|
| 448 |
|
|
/* Dwarf2 debugging. */
|
| 449 |
|
|
#undef PREFERRED_DEBUGGING_TYPE
|
| 450 |
|
|
#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
|
| 451 |
|
|
|
| 452 |
|
|
/* This is how to declare the size of a function. */
|
| 453 |
|
|
#undef ASM_DECLARE_FUNCTION_SIZE
|
| 454 |
|
|
#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
|
| 455 |
|
|
do \
|
| 456 |
|
|
{ \
|
| 457 |
|
|
if (!flag_inhibit_size_directive) \
|
| 458 |
|
|
{ \
|
| 459 |
|
|
fputs ("\t.size\t", (FILE)); \
|
| 460 |
|
|
if (TARGET_64BIT && DOT_SYMBOLS) \
|
| 461 |
|
|
putc ('.', (FILE)); \
|
| 462 |
|
|
assemble_name ((FILE), (FNAME)); \
|
| 463 |
|
|
fputs (",.-", (FILE)); \
|
| 464 |
|
|
rs6000_output_function_entry (FILE, FNAME); \
|
| 465 |
|
|
putc ('\n', (FILE)); \
|
| 466 |
|
|
} \
|
| 467 |
|
|
} \
|
| 468 |
|
|
while (0)
|
| 469 |
|
|
|
| 470 |
|
|
/* Return nonzero if this entry is to be written into the constant
|
| 471 |
|
|
pool in a special way. We do so if this is a SYMBOL_REF, LABEL_REF
|
| 472 |
|
|
or a CONST containing one of them. If -mfp-in-toc (the default),
|
| 473 |
|
|
we also do this for floating-point constants. We actually can only
|
| 474 |
|
|
do this if the FP formats of the target and host machines are the
|
| 475 |
|
|
same, but we can't check that since not every file that uses
|
| 476 |
|
|
the macros includes real.h. We also do this when we can write the
|
| 477 |
|
|
entry into the TOC and the entry is not larger than a TOC entry. */
|
| 478 |
|
|
|
| 479 |
|
|
#undef ASM_OUTPUT_SPECIAL_POOL_ENTRY_P
|
| 480 |
|
|
#define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE) \
|
| 481 |
|
|
(TARGET_TOC \
|
| 482 |
|
|
&& (GET_CODE (X) == SYMBOL_REF \
|
| 483 |
|
|
|| (GET_CODE (X) == CONST && GET_CODE (XEXP (X, 0)) == PLUS \
|
| 484 |
|
|
&& GET_CODE (XEXP (XEXP (X, 0), 0)) == SYMBOL_REF) \
|
| 485 |
|
|
|| GET_CODE (X) == LABEL_REF \
|
| 486 |
|
|
|| (GET_CODE (X) == CONST_INT \
|
| 487 |
|
|
&& GET_MODE_BITSIZE (MODE) <= GET_MODE_BITSIZE (Pmode)) \
|
| 488 |
|
|
|| (GET_CODE (X) == CONST_DOUBLE \
|
| 489 |
|
|
&& ((TARGET_64BIT \
|
| 490 |
|
|
&& (TARGET_MINIMAL_TOC \
|
| 491 |
|
|
|| (SCALAR_FLOAT_MODE_P (GET_MODE (X)) \
|
| 492 |
|
|
&& ! TARGET_NO_FP_IN_TOC))) \
|
| 493 |
|
|
|| (!TARGET_64BIT \
|
| 494 |
|
|
&& !TARGET_NO_FP_IN_TOC \
|
| 495 |
|
|
&& !TARGET_RELOCATABLE \
|
| 496 |
|
|
&& SCALAR_FLOAT_MODE_P (GET_MODE (X)) \
|
| 497 |
|
|
&& BITS_PER_WORD == HOST_BITS_PER_INT)))))
|
| 498 |
|
|
|
| 499 |
|
|
/* Select a format to encode pointers in exception handling data. CODE
|
| 500 |
|
|
is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is
|
| 501 |
|
|
true if the symbol may be affected by dynamic relocations. */
|
| 502 |
|
|
#undef ASM_PREFERRED_EH_DATA_FORMAT
|
| 503 |
|
|
#define ASM_PREFERRED_EH_DATA_FORMAT(CODE, GLOBAL) \
|
| 504 |
|
|
((TARGET_64BIT || flag_pic || TARGET_RELOCATABLE) \
|
| 505 |
|
|
? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel \
|
| 506 |
|
|
| (TARGET_64BIT ? DW_EH_PE_udata8 : DW_EH_PE_sdata4)) \
|
| 507 |
|
|
: DW_EH_PE_absptr)
|
| 508 |
|
|
|
| 509 |
|
|
/* For backward compatibility, we must continue to use the AIX
|
| 510 |
|
|
structure return convention. */
|
| 511 |
|
|
#undef DRAFT_V4_STRUCT_RET
|
| 512 |
|
|
#define DRAFT_V4_STRUCT_RET (!TARGET_64BIT)
|
| 513 |
|
|
|
| 514 |
|
|
#define TARGET_ASM_FILE_END rs6000_elf_end_indicate_exec_stack
|
| 515 |
|
|
|
| 516 |
|
|
#define TARGET_POSIX_IO
|
| 517 |
|
|
|
| 518 |
|
|
#define LINK_GCC_C_SEQUENCE_SPEC \
|
| 519 |
|
|
"%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
|
| 520 |
|
|
|
| 521 |
|
|
/* Use --as-needed -lgcc_s for eh support. */
|
| 522 |
|
|
#ifdef HAVE_LD_AS_NEEDED
|
| 523 |
|
|
#define USE_LD_AS_NEEDED 1
|
| 524 |
|
|
#endif
|
| 525 |
|
|
|
| 526 |
|
|
#define MD_UNWIND_SUPPORT "config/rs6000/linux-unwind.h"
|
| 527 |
|
|
|
| 528 |
|
|
#ifdef TARGET_LIBC_PROVIDES_SSP
|
| 529 |
|
|
/* ppc32 glibc provides __stack_chk_guard in -0x7008(2),
|
| 530 |
|
|
ppc64 glibc provides it at -0x7010(13). */
|
| 531 |
|
|
#define TARGET_THREAD_SSP_OFFSET (TARGET_64BIT ? -0x7010 : -0x7008)
|
| 532 |
|
|
#endif
|
| 533 |
|
|
|
| 534 |
|
|
#define POWERPC_LINUX
|
| 535 |
|
|
|
| 536 |
|
|
/* ppc{32,64} linux has 128-bit long double support in glibc 2.4 and later. */
|
| 537 |
|
|
#ifdef TARGET_DEFAULT_LONG_DOUBLE_128
|
| 538 |
|
|
#define RS6000_DEFAULT_LONG_DOUBLE_SIZE 128
|
| 539 |
|
|
#endif
|
