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gnu / gcc / 82b61df521d17a96f60e56ede06a55a8894b1c2e / . / gcc / config / rs6000 / sysv4.h
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/* Target definitions for GNU compiler for PowerPC running System V.4
Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001
Free Software Foundation, Inc.
Contributed by Cygnus Support.
This file is part of GNU CC.
GNU CC 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.
GNU CC 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 GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* Yes! We are ELF. */
#define TARGET_OBJECT_FORMAT OBJECT_ELF
/* Default ABI to compile code for. */
#define DEFAULT_ABI rs6000_current_abi
/* Default ABI to use. */
#define RS6000_ABI_NAME "sysv"
/* Override rs6000.h definition. */
#undef ASM_DEFAULT_SPEC
#define ASM_DEFAULT_SPEC "-mppc"
/* Override rs6000.h definition. */
#undef CPP_DEFAULT_SPEC
#define CPP_DEFAULT_SPEC "-D_ARCH_PPC"
/* Small data support types. */
enum rs6000_sdata_type {
SDATA_NONE, /* No small data support. */
SDATA_DATA, /* Just put data in .sbss/.sdata, don't use relocs. */
SDATA_SYSV, /* Use r13 to point to .sdata/.sbss. */
SDATA_EABI /* Use r13 like above, r2 points to .sdata2/.sbss2. */
};
extern enum rs6000_sdata_type rs6000_sdata;
/* V.4/eabi switches. */
#define MASK_NO_BITFIELD_TYPE 0x40000000 /* Set PCC_BITFIELD_TYPE_MATTERS to 0. */
#define MASK_STRICT_ALIGN 0x20000000 /* Set STRICT_ALIGNMENT to 1. */
#define MASK_RELOCATABLE 0x10000000 /* GOT pointers are PC relative. */
#define MASK_EABI 0x08000000 /* Adhere to eabi, not System V spec. */
#define MASK_LITTLE_ENDIAN 0x04000000 /* Target is little endian. */
#define MASK_REGNAMES 0x02000000 /* Use alternate register names. */
#define MASK_PROTOTYPE 0x01000000 /* Only prototyped fcns pass variable args. */
#define MASK_NO_BITFIELD_WORD 0x00800000 /* Bitfields cannot cross word boundaries */
#define TARGET_NO_BITFIELD_TYPE (target_flags & MASK_NO_BITFIELD_TYPE)
#define TARGET_STRICT_ALIGN (target_flags & MASK_STRICT_ALIGN)
#define TARGET_RELOCATABLE (target_flags & MASK_RELOCATABLE)
#define TARGET_EABI (target_flags & MASK_EABI)
#define TARGET_LITTLE_ENDIAN (target_flags & MASK_LITTLE_ENDIAN)
#define TARGET_REGNAMES (target_flags & MASK_REGNAMES)
#define TARGET_PROTOTYPE (target_flags & MASK_PROTOTYPE)
#define TARGET_NO_BITFIELD_WORD (target_flags & MASK_NO_BITFIELD_WORD)
#define TARGET_TOC ((target_flags & MASK_64BIT) \
|| ((target_flags & (MASK_RELOCATABLE \
| MASK_MINIMAL_TOC)) \
&& flag_pic > 1) \
|| DEFAULT_ABI == ABI_AIX)
#define TARGET_BITFIELD_TYPE (! TARGET_NO_BITFIELD_TYPE)
#define TARGET_BIG_ENDIAN (! TARGET_LITTLE_ENDIAN)
#define TARGET_NO_PROTOTYPE (! TARGET_PROTOTYPE)
#define TARGET_NO_TOC (! TARGET_TOC)
#define TARGET_NO_EABI (! TARGET_EABI)
/* Strings provided by SUBTARGET_OPTIONS */
extern const char *rs6000_abi_name;
extern const char *rs6000_sdata_name;
/* Override rs6000.h definition. */
#undef SUBTARGET_OPTIONS
#define SUBTARGET_OPTIONS \
{ "call-", &rs6000_abi_name, N_("Select ABI calling convention") }, \
{ "sdata=", &rs6000_sdata_name, N_("Select method for sdata handling") }
/* Max # of bytes for variables to automatically be put into the .sdata
or .sdata2 sections. */
extern int g_switch_value; /* Value of the -G xx switch. */
extern int g_switch_set; /* Whether -G xx was passed. */
#define SDATA_DEFAULT_SIZE 8
/* Note, V.4 no longer uses a normal TOC, so make -mfull-toc, be just
the same as -mminimal-toc. */
/* Override rs6000.h definition. */
#undef SUBTARGET_SWITCHES
#define SUBTARGET_SWITCHES \
{ "bit-align", -MASK_NO_BITFIELD_TYPE, \
N_("Align to the base type of the bit-field") }, \
{ "no-bit-align", MASK_NO_BITFIELD_TYPE, \
N_("Don't align to the base type of the bit-field") }, \
{ "strict-align", MASK_STRICT_ALIGN, \
N_("Don't assume that unaligned accesses are handled by the system") }, \
{ "no-strict-align", -MASK_STRICT_ALIGN, \
N_("Assume that unaligned accesses are handled by the system") }, \
{ "relocatable", MASK_RELOCATABLE | MASK_MINIMAL_TOC | MASK_NO_FP_IN_TOC, \
N_("Produce code relocatable at runtime") }, \
{ "no-relocatable", -MASK_RELOCATABLE, \
N_("Don't produce code relocatable at runtime") }, \
{ "relocatable-lib", MASK_RELOCATABLE | MASK_MINIMAL_TOC | MASK_NO_FP_IN_TOC, \
N_("Produce code relocatable at runtime") }, \
{ "no-relocatable-lib", -MASK_RELOCATABLE, \
N_("Don't produce code relocatable at runtime") }, \
{ "little-endian", MASK_LITTLE_ENDIAN, \
N_("Produce little endian code") }, \
{ "little", MASK_LITTLE_ENDIAN, \
N_("Produce little endian code") }, \
{ "big-endian", -MASK_LITTLE_ENDIAN, \
N_("Produce big endian code") }, \
{ "big", -MASK_LITTLE_ENDIAN, \
N_("Produce big endian code") }, \
{ "no-toc", 0, N_("no description yet") }, \
{ "toc", MASK_MINIMAL_TOC, N_("no description yet") }, \
{ "full-toc", MASK_MINIMAL_TOC, N_("no description yet") }, \
{ "prototype", MASK_PROTOTYPE, N_("no description yet") }, \
{ "no-prototype", -MASK_PROTOTYPE, N_("no description yet") }, \
{ "no-traceback", 0, N_("no description yet") }, \
{ "eabi", MASK_EABI, N_("Use EABI") }, \
{ "no-eabi", -MASK_EABI, N_("Don't use EABI") }, \
{ "bit-word", -MASK_NO_BITFIELD_WORD, "" }, \
{ "no-bit-word", MASK_NO_BITFIELD_WORD, \
N_("Do not allow bit-fields to cross word boundaries") }, \
{ "regnames", MASK_REGNAMES, \
N_("Use alternate register names") }, \
{ "no-regnames", -MASK_REGNAMES, \
N_("Don't use alternate register names") }, \
{ "sdata", 0, N_("no description yet") }, \
{ "no-sdata", 0, N_("no description yet") }, \
{ "sim", 0, \
N_("Link with libsim.a, libc.a and sim-crt0.o") }, \
{ "ads", 0, \
N_("Link with libads.a, libc.a and crt0.o") }, \
{ "yellowknife", 0, \
N_("Link with libyk.a, libc.a and crt0.o") }, \
{ "mvme", 0, \
N_("Link with libmvme.a, libc.a and crt0.o") }, \
{ "emb", 0, \
N_("Set the PPC_EMB bit in the ELF flags header") }, \
{ "vxworks", 0, N_("no description yet") }, \
{ "shlib", 0, N_("no description yet") }, \
EXTRA_SUBTARGET_SWITCHES \
{ "newlib", 0, N_("no description yet") },
/* This is meant to be redefined in the host dependent files. */
#define EXTRA_SUBTARGET_SWITCHES
/* Sometimes certain combinations of command options do not make sense
on a particular target machine. You can define a macro
`OVERRIDE_OPTIONS' to take account of this. This macro, if
defined, is executed once just after all the command options have
been parsed.
The macro SUBTARGET_OVERRIDE_OPTIONS is provided for subtargets, to
get control. */
#define SUBTARGET_OVERRIDE_OPTIONS \
do { \
if (!g_switch_set) \
g_switch_value = SDATA_DEFAULT_SIZE; \
\
if (!strcmp (rs6000_abi_name, "sysv")) \
rs6000_current_abi = ABI_V4; \
else if (!strcmp (rs6000_abi_name, "sysv-noeabi")) \
{ \
rs6000_current_abi = ABI_V4; \
target_flags &= ~ MASK_EABI; \
} \
else if (!strcmp (rs6000_abi_name, "sysv-eabi") \
|| !strcmp (rs6000_abi_name, "eabi")) \
{ \
rs6000_current_abi = ABI_V4; \
target_flags |= MASK_EABI; \
} \
else if (!strcmp (rs6000_abi_name, "aix")) \
{ \
rs6000_current_abi = ABI_AIX_NODESC; \
target_flags |= MASK_EABI; \
} \
else if (!strcmp (rs6000_abi_name, "aixdesc")) \
rs6000_current_abi = ABI_AIX; \
else if (!strcmp (rs6000_abi_name, "freebsd")) \
rs6000_current_abi = ABI_V4; \
else if (!strcmp (rs6000_abi_name, "linux")) \
rs6000_current_abi = ABI_V4; \
else if (!strcmp (rs6000_abi_name, "netbsd")) \
rs6000_current_abi = ABI_V4; \
else if (!strcmp (rs6000_abi_name, "i960-old")) \
{ \
rs6000_current_abi = ABI_V4; \
target_flags |= (MASK_LITTLE_ENDIAN | MASK_EABI \
| MASK_NO_BITFIELD_WORD); \
target_flags &= ~MASK_STRICT_ALIGN; \
} \
else \
{ \
rs6000_current_abi = ABI_V4; \
error ("bad value for -mcall-%s", rs6000_abi_name); \
} \
\
if (rs6000_sdata_name) \
{ \
if (!strcmp (rs6000_sdata_name, "none")) \
rs6000_sdata = SDATA_NONE; \
else if (!strcmp (rs6000_sdata_name, "data")) \
rs6000_sdata = SDATA_DATA; \
else if (!strcmp (rs6000_sdata_name, "default")) \
rs6000_sdata = (TARGET_EABI) ? SDATA_EABI : SDATA_SYSV; \
else if (!strcmp (rs6000_sdata_name, "sysv")) \
rs6000_sdata = SDATA_SYSV; \
else if (!strcmp (rs6000_sdata_name, "eabi")) \
rs6000_sdata = SDATA_EABI; \
else \
error ("bad value for -msdata=%s", rs6000_sdata_name); \
} \
else if (DEFAULT_ABI == ABI_V4) \
{ \
rs6000_sdata = SDATA_DATA; \
rs6000_sdata_name = "data"; \
} \
else \
{ \
rs6000_sdata = SDATA_NONE; \
rs6000_sdata_name = "none"; \
} \
\
if (TARGET_RELOCATABLE && \
(rs6000_sdata == SDATA_EABI || rs6000_sdata == SDATA_SYSV)) \
{ \
rs6000_sdata = SDATA_DATA; \
error ("-mrelocatable and -msdata=%s are incompatible", \
rs6000_sdata_name); \
} \
\
else if (flag_pic && \
(rs6000_sdata == SDATA_EABI || rs6000_sdata == SDATA_SYSV)) \
{ \
rs6000_sdata = SDATA_DATA; \
error ("-f%s and -msdata=%s are incompatible", \
(flag_pic > 1) ? "PIC" : "pic", \
rs6000_sdata_name); \
} \
\
if (rs6000_sdata != SDATA_NONE && DEFAULT_ABI != ABI_V4) \
{ \
rs6000_sdata = SDATA_NONE; \
error ("-msdata=%s and -mcall-%s are incompatible", \
rs6000_sdata_name, rs6000_abi_name); \
} \
\
if (TARGET_RELOCATABLE && !TARGET_MINIMAL_TOC) \
{ \
target_flags |= MASK_MINIMAL_TOC; \
error ("-mrelocatable and -mno-minimal-toc are incompatible"); \
} \
\
if (TARGET_RELOCATABLE && rs6000_current_abi == ABI_AIX) \
{ \
target_flags &= ~MASK_RELOCATABLE; \
error ("-mrelocatable and -mcall-%s are incompatible", \
rs6000_abi_name); \
} \
\
if (flag_pic > 1 && rs6000_current_abi == ABI_AIX) \
{ \
flag_pic = 0; \
error ("-fPIC and -mcall-%s are incompatible", \
rs6000_abi_name); \
} \
\
if (rs6000_current_abi == ABI_AIX && TARGET_LITTLE_ENDIAN) \
{ \
target_flags &= ~MASK_LITTLE_ENDIAN; \
error ("-mcall-aixdesc must be big endian"); \
} \
\
/* Treat -fPIC the same as -mrelocatable. */ \
if (flag_pic > 1) \
target_flags |= MASK_RELOCATABLE | MASK_MINIMAL_TOC | MASK_NO_FP_IN_TOC; \
\
else if (TARGET_RELOCATABLE) \
flag_pic = 2; \
\
} while (0)
/* Override rs6000.h definition. */
#undef TARGET_DEFAULT
#define TARGET_DEFAULT (MASK_POWERPC | MASK_NEW_MNEMONICS)
/* Override rs6000.h definition. */
#undef PROCESSOR_DEFAULT
#define PROCESSOR_DEFAULT PROCESSOR_PPC750
#define FIXED_R2 1
/* System V.4 uses register 13 as a pointer to the small data area,
so it is not available to the normal user. */
#define FIXED_R13 1
/* Size of the V.4 varargs area if needed. */
/* Override rs6000.h definition. */
#undef RS6000_VARARGS_AREA
#define RS6000_VARARGS_AREA ((cfun->machine->sysv_varargs_p) ? RS6000_VARARGS_SIZE : 0)
/* Override default big endianism definitions in rs6000.h. */
#undef BYTES_BIG_ENDIAN
#undef WORDS_BIG_ENDIAN
#define BYTES_BIG_ENDIAN (TARGET_BIG_ENDIAN)
#define WORDS_BIG_ENDIAN (TARGET_BIG_ENDIAN)
/* Define this to set the endianness to use in libgcc2.c, which can
not depend on target_flags. */
#if !defined(_LITTLE_ENDIAN) && !defined(__sun__)
#define LIBGCC2_WORDS_BIG_ENDIAN 1
#else
#define LIBGCC2_WORDS_BIG_ENDIAN 0
#endif
/* Define cutoff for using external functions to save floating point.
Currently on V.4, always use inline stores. */
#define FP_SAVE_INLINE(FIRST_REG) ((FIRST_REG) < 64)
/* Put jump tables in read-only memory, rather than in .text. */
#define JUMP_TABLES_IN_TEXT_SECTION 0
/* Prefix and suffix to use to saving floating point. */
#define SAVE_FP_PREFIX "_savefpr_"
#define SAVE_FP_SUFFIX "_l"
/* Prefix and suffix to use to restoring floating point. */
#define RESTORE_FP_PREFIX "_restfpr_"
#define RESTORE_FP_SUFFIX "_l"
/* Type used for ptrdiff_t, as a string used in a declaration. */
#define PTRDIFF_TYPE "int"
/* Type used for wchar_t, as a string used in a declaration. */
/* Override svr4.h definition. */
#undef WCHAR_TYPE
#define WCHAR_TYPE "long int"
/* Width of wchar_t in bits. */
/* Override svr4.h definition. */
#undef WCHAR_TYPE_SIZE
#define WCHAR_TYPE_SIZE 32
/* Make int foo : 8 not cause structures to be aligned to an int boundary. */
/* Override elfos.h definition. */
#undef PCC_BITFIELD_TYPE_MATTERS
#define PCC_BITFIELD_TYPE_MATTERS (TARGET_BITFIELD_TYPE)
#undef BITFIELD_NBYTES_LIMITED
#define BITFIELD_NBYTES_LIMITED (TARGET_NO_BITFIELD_WORD)
/* Define this macro to be the value 1 if instructions will fail to
work if given data not on the nominal alignment. If instructions
will merely go slower in that case, define this macro as 0. */
#undef STRICT_ALIGNMENT
#define STRICT_ALIGNMENT (TARGET_STRICT_ALIGN)
/* Alignment in bits of the stack boundary. Note, in order to allow building
one set of libraries with -mno-eabi instead of eabi libraries and non-eabi
versions, just use 64 as the stack boundary. */
#undef STACK_BOUNDARY
#define STACK_BOUNDARY (TARGET_ALTIVEC_ABI ? 128 : 64)
/* Real stack boundary as mandated by the appropriate ABI. */
#define ABI_STACK_BOUNDARY ((TARGET_EABI && !TARGET_ALTIVEC_ABI) ? 64 : 128)
/* No data type wants to be aligned rounder than this. */
#undef BIGGEST_ALIGNMENT
#define BIGGEST_ALIGNMENT (TARGET_EABI ? 64 : 128)
/* An expression for the alignment of a structure field FIELD if the
alignment computed in the usual way is COMPUTED. */
#define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \
((TARGET_ALTIVEC && TREE_CODE (TREE_TYPE (FIELD)) == VECTOR_TYPE) \
? 128 : COMPUTED)
/* Define this macro as an expression for the alignment of a type
(given by TYPE as a tree node) if the alignment computed in the
usual way is COMPUTED and the alignment explicitly specified was
SPECIFIED. */
#define ROUND_TYPE_ALIGN(TYPE, COMPUTED, SPECIFIED) \
((TARGET_ALTIVEC && TREE_CODE (TYPE) == VECTOR_TYPE) \
? 128 : MAX (COMPUTED, SPECIFIED))
#undef BIGGEST_FIELD_ALIGNMENT
#undef ADJUST_FIELD_ALIGN
/* Use ELF style section commands. */
#define TEXT_SECTION_ASM_OP "\t.section\t\".text\""
#define DATA_SECTION_ASM_OP "\t.section\t\".data\""
#define BSS_SECTION_ASM_OP "\t.section\t\".bss\""
/* Override elfos.h definition. */
#undef INIT_SECTION_ASM_OP
#define INIT_SECTION_ASM_OP "\t.section\t\".init\",\"ax\""
/* Override elfos.h definition. */
#undef FINI_SECTION_ASM_OP
#define FINI_SECTION_ASM_OP "\t.section\t\".fini\",\"ax\""
#define TOC_SECTION_ASM_OP "\t.section\t\".got\",\"aw\""
/* Put PC relative got entries in .got2. */
#define MINIMAL_TOC_SECTION_ASM_OP \
((TARGET_RELOCATABLE || flag_pic) ? "\t.section\t\".got2\",\"aw\"" : "\t.section\t\".got1\",\"aw\"")
#define SDATA_SECTION_ASM_OP "\t.section\t\".sdata\",\"aw\""
#define SDATA2_SECTION_ASM_OP "\t.section\t\".sdata2\",\"a\""
#define SBSS_SECTION_ASM_OP "\t.section\t\".sbss\",\"aw\",@nobits"
/* Besides the usual ELF sections, we need a toc section. */
/* Override elfos.h definition. */
#undef EXTRA_SECTIONS
#define EXTRA_SECTIONS in_const, in_toc, in_sdata, in_sdata2, in_sbss, in_init, in_fini
/* Override elfos.h definition. */
#undef EXTRA_SECTION_FUNCTIONS
#define EXTRA_SECTION_FUNCTIONS \
CONST_SECTION_FUNCTION \
TOC_SECTION_FUNCTION \
SDATA_SECTION_FUNCTION \
SDATA2_SECTION_FUNCTION \
SBSS_SECTION_FUNCTION \
INIT_SECTION_FUNCTION \
FINI_SECTION_FUNCTION
#define TOC_SECTION_FUNCTION \
void \
toc_section () \
{ \
if (in_section != in_toc) \
{ \
in_section = in_toc; \
if (DEFAULT_ABI == ABI_AIX \
&& TARGET_MINIMAL_TOC \
&& !TARGET_RELOCATABLE) \
{ \
if (! toc_initialized) \
{ \
toc_initialized = 1; \
fprintf (asm_out_file, "%s\n", TOC_SECTION_ASM_OP); \
ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, "LCTOC", 0); \
fprintf (asm_out_file, "\t.tc "); \
ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1[TC],"); \
ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
fprintf (asm_out_file, "\n"); \
\
fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
fprintf (asm_out_file, " = .+32768\n"); \
} \
else \
fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
} \
else if (DEFAULT_ABI == ABI_AIX && !TARGET_RELOCATABLE) \
fprintf (asm_out_file, "%s\n", TOC_SECTION_ASM_OP); \
else \
{ \
fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
if (! toc_initialized) \
{ \
ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
fprintf (asm_out_file, " = .+32768\n"); \
toc_initialized = 1; \
} \
} \
} \
} \
\
extern int in_toc_section PARAMS ((void)); \
int in_toc_section () \
{ \
return in_section == in_toc; \
}
#define SDATA_SECTION_FUNCTION \
void \
sdata_section () \
{ \
if (in_section != in_sdata) \
{ \
in_section = in_sdata; \
fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP); \
} \
}
#define SDATA2_SECTION_FUNCTION \
void \
sdata2_section () \
{ \
if (in_section != in_sdata2) \
{ \
in_section = in_sdata2; \
fprintf (asm_out_file, "%s\n", SDATA2_SECTION_ASM_OP); \
} \
}
#define SBSS_SECTION_FUNCTION \
void \
sbss_section () \
{ \
if (in_section != in_sbss) \
{ \
in_section = in_sbss; \
fprintf (asm_out_file, "%s\n", SBSS_SECTION_ASM_OP); \
} \
}
#define INIT_SECTION_FUNCTION \
void \
init_section () \
{ \
if (in_section != in_init) \
{ \
in_section = in_init; \
fprintf (asm_out_file, "%s\n", INIT_SECTION_ASM_OP); \
} \
}
#define FINI_SECTION_FUNCTION \
void \
fini_section () \
{ \
if (in_section != in_fini) \
{ \
in_section = in_fini; \
fprintf (asm_out_file, "%s\n", FINI_SECTION_ASM_OP); \
} \
}
/* A C statement or statements to switch to the appropriate section
for output of RTX in mode MODE. You can assume that RTX is some
kind of constant in RTL. The argument MODE is redundant except in
the case of a `const_int' rtx. Select the section by calling
`text_section' or one of the alternatives for other sections.
Do not define this macro if you put all constants in the read-only
data section. */
/* Override elfos.h definition. */
#undef SELECT_RTX_SECTION
#define SELECT_RTX_SECTION(MODE, X, ALIGN) rs6000_select_rtx_section (MODE, X)
/* A C statement or statements to switch to the appropriate
section for output of DECL. DECL is either a `VAR_DECL' node
or a constant of some sort. RELOC indicates whether forming
the initial value of DECL requires link-time relocations. */
/* Override elfos.h definition. */
#undef SELECT_SECTION
#define SELECT_SECTION(DECL, RELOC, ALIGN) rs6000_select_section (DECL, RELOC)
/* A C statement to build up a unique section name, expressed as a
STRING_CST node, and assign it to DECL_SECTION_NAME (decl).
RELOC indicates whether the initial value of EXP requires
link-time relocations. If you do not define this macro, GCC will use
the symbol name prefixed by `.' as the section name. Note - this
macro can now be called for uninitialized data items as well as
initialised data and functions. */
/* Override elfos.h definition. */
#undef UNIQUE_SECTION
#define UNIQUE_SECTION(DECL, RELOC) rs6000_unique_section (DECL, RELOC)
/* Return non-zero if this entry is to be written into the constant pool
in a special way. We do so if this is a SYMBOL_REF, LABEL_REF or a CONST
containing one of them. If -mfp-in-toc (the default), we also do
this for floating-point constants. We actually can only do this
if the FP formats of the target and host machines are the same, but
we can't check that since not every file that uses
GO_IF_LEGITIMATE_ADDRESS_P includes real.h.
Unlike AIX, we don't key off of -mminimal-toc, but instead do not
allow floating point constants in the TOC if -mrelocatable. */
#undef ASM_OUTPUT_SPECIAL_POOL_ENTRY_P
#define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE) \
(TARGET_TOC \
&& (GET_CODE (X) == SYMBOL_REF \
|| (GET_CODE (X) == CONST && GET_CODE (XEXP (X, 0)) == PLUS \
&& GET_CODE (XEXP (XEXP (X, 0), 0)) == SYMBOL_REF) \
|| GET_CODE (X) == LABEL_REF \
|| (GET_CODE (X) == CONST_INT \
&& GET_MODE_BITSIZE (MODE) <= GET_MODE_BITSIZE (Pmode)) \
|| (!TARGET_NO_FP_IN_TOC \
&& !TARGET_RELOCATABLE \
&& GET_CODE (X) == CONST_DOUBLE \
&& GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \
&& BITS_PER_WORD == HOST_BITS_PER_INT)))
/* These macros generate the special .type and .size directives which
are used to set the corresponding fields of the linker symbol table
entries in an ELF object file under SVR4. These macros also output
the starting labels for the relevant functions/objects. */
/* Write the extra assembler code needed to declare a function properly.
Some svr4 assemblers need to also have something extra said about the
function's return value. We allow for that here. */
extern int rs6000_pic_labelno;
/* Override elfos.h definition. */
#undef ASM_DECLARE_FUNCTION_NAME
#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
do { \
const char *const init_ptr = (TARGET_64BIT) ? ".quad" : ".long"; \
\
if (TARGET_RELOCATABLE && (get_pool_size () != 0 || profile_flag) \
&& uses_TOC()) \
{ \
char buf[256]; \
\
ASM_OUTPUT_INTERNAL_LABEL (FILE, "LCL", rs6000_pic_labelno); \
\
ASM_GENERATE_INTERNAL_LABEL (buf, "LCTOC", 1); \
fprintf (FILE, "\t%s ", init_ptr); \
assemble_name (FILE, buf); \
putc ('-', FILE); \
ASM_GENERATE_INTERNAL_LABEL (buf, "LCF", rs6000_pic_labelno); \
assemble_name (FILE, buf); \
putc ('\n', FILE); \
} \
\
fprintf (FILE, "%s", TYPE_ASM_OP); \
assemble_name (FILE, NAME); \
putc (',', FILE); \
fprintf (FILE, TYPE_OPERAND_FMT, "function"); \
putc ('\n', FILE); \
ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \
\
if (DEFAULT_ABI == ABI_AIX) \
{ \
const char *desc_name, *orig_name; \
\
STRIP_NAME_ENCODING (orig_name, NAME); \
desc_name = orig_name; \
while (*desc_name == '.') \
desc_name++; \
\
if (TREE_PUBLIC (DECL)) \
fprintf (FILE, "\t.globl %s\n", desc_name); \
\
fprintf (FILE, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
fprintf (FILE, "%s:\n", desc_name); \
fprintf (FILE, "\t%s %s\n", init_ptr, orig_name); \
fprintf (FILE, "\t%s _GLOBAL_OFFSET_TABLE_\n", init_ptr); \
if (DEFAULT_ABI == ABI_AIX) \
fprintf (FILE, "\t%s 0\n", init_ptr); \
fprintf (FILE, "\t.previous\n"); \
} \
ASM_OUTPUT_LABEL (FILE, NAME); \
} while (0)
/* A C compound statement that outputs the assembler code for a thunk function,
used to implement C++ virtual function calls with multiple inheritance. The
thunk acts as a wrapper around a virtual function, adjusting the implicit
object parameter before handing control off to the real function.
First, emit code to add the integer DELTA to the location that contains the
incoming first argument. Assume that this argument contains a pointer, and
is the one used to pass the this' pointer in C++. This is the incoming
argument *before* the function prologue, e.g. %o0' on a sparc. The
addition must preserve the values of all other incoming arguments.
After the addition, emit code to jump to FUNCTION, which is a
FUNCTION_DECL'. This is a direct pure jump, not a call, and does not touch
the return address. Hence returning from FUNCTION will return to whoever
called the current thunk'.
The effect must be as if FUNCTION had been called directly with the adjusted
first argument. This macro is responsible for emitting all of the code for
a thunk function; FUNCTION_PROLOGUE' and FUNCTION_EPILOGUE' are not
invoked.
The THUNK_FNDECL is redundant. (DELTA and FUNCTION have already been
extracted from it.) It might possibly be useful on some targets, but
probably not.
If you do not define this macro, the target-independent code in the C++
frontend will generate a less efficient heavyweight thunk that calls
FUNCTION instead of jumping to it. The generic approach does not support
varargs. */
#define ASM_OUTPUT_MI_THUNK(FILE, THUNK_FNDECL, DELTA, FUNCTION) \
output_mi_thunk (FILE, THUNK_FNDECL, DELTA, FUNCTION)
/* The USER_LABEL_PREFIX stuff is affected by the -fleading-underscore
flag. The LOCAL_LABEL_PREFIX variable is used by dbxelf.h. */
#define LOCAL_LABEL_PREFIX "."
#define USER_LABEL_PREFIX ""
/* svr4.h overrides ASM_OUTPUT_INTERNAL_LABEL. */
#define ASM_OUTPUT_INTERNAL_LABEL_PREFIX(FILE,PREFIX) \
asm_fprintf (FILE, "%L%s", PREFIX)
#define ASM_OUTPUT_LABEL(FILE,NAME) \
(assemble_name (FILE, NAME), fputs (":\n", FILE))
/* This is how to output a command to make the user-level label named NAME
defined for reference from other files. */
#define ASM_GLOBALIZE_LABEL(FILE,NAME) \
do { fputs ("\t.globl ", FILE); \
assemble_name (FILE, NAME); putc ('\n', FILE);} while (0)
/* This says how to output assembler code to declare an
uninitialized internal linkage data object. Under SVR4,
the linker seems to want the alignment of data objects
to depend on their types. We do exactly that here. */
#define LOCAL_ASM_OP "\t.local\t"
#define LCOMM_ASM_OP "\t.lcomm\t"
/* Override elfos.h definition. */
#undef ASM_OUTPUT_ALIGNED_LOCAL
#define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \
do { \
if (rs6000_sdata != SDATA_NONE && (SIZE) > 0 \
&& (SIZE) <= g_switch_value) \
{ \
sbss_section (); \
ASM_OUTPUT_ALIGN (FILE, exact_log2 (ALIGN / BITS_PER_UNIT)); \
ASM_OUTPUT_LABEL (FILE, NAME); \
ASM_OUTPUT_SKIP (FILE, SIZE); \
if (!flag_inhibit_size_directive && (SIZE) > 0) \
{ \
fprintf (FILE, "%s", SIZE_ASM_OP); \
assemble_name (FILE, NAME); \
fprintf (FILE, ",%d\n", SIZE); \
} \
} \
else \
{ \
fprintf (FILE, "%s", LCOMM_ASM_OP); \
assemble_name ((FILE), (NAME)); \
fprintf ((FILE), ",%u,%u\n", (SIZE), (ALIGN) / BITS_PER_UNIT); \
} \
} while (0)
/* Describe how to emit uninitialized external linkage items. */
#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
do { \
ASM_GLOBALIZE_LABEL (FILE, NAME); \
ASM_OUTPUT_ALIGNED_LOCAL (FILE, NAME, SIZE, ALIGN); \
} while (0)
/* Switch Recognition by gcc.c. Add -G xx support. */
/* Override svr4.h definition. */
#undef SWITCH_TAKES_ARG
#define SWITCH_TAKES_ARG(CHAR) \
((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \
|| (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
|| (CHAR) == 'I' || (CHAR) == 'm' || (CHAR) == 'x' \
|| (CHAR) == 'L' || (CHAR) == 'A' || (CHAR) == 'V' \
|| (CHAR) == 'B' || (CHAR) == 'b' || (CHAR) == 'G')
/* Output .file. */
/* Override elfos.h definition. */
#undef ASM_FILE_START
#define ASM_FILE_START(FILE) \
do { \
output_file_directive ((FILE), main_input_filename); \
rs6000_file_start (FILE, TARGET_CPU_DEFAULT); \
} while (0)
extern int fixuplabelno;
/* Handle constructors specially for -mrelocatable. */
#define TARGET_ASM_CONSTRUCTOR rs6000_elf_asm_out_constructor
#define TARGET_ASM_DESTRUCTOR rs6000_elf_asm_out_destructor
/* This is the end of what might become sysv4.h. */
/* Use DWARF 2 debugging information by default. */
#undef PREFERRED_DEBUGGING_TYPE
#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
/* Historically we have also supported stabs debugging. */
#define DBX_DEBUGGING_INFO
/* If we are referencing a function that is static or is known to be
in this file, make the SYMBOL_REF special. We can use this to indicate
that we can branch to this function without emitting a no-op after the
call. For real AIX calling sequences, we also replace the
function name with the real name (1 or 2 leading .'s), rather than
the function descriptor name. This saves a lot of overriding code
to read the prefixes. */
#undef ENCODE_SECTION_INFO
#define ENCODE_SECTION_INFO(DECL) rs6000_encode_section_info (DECL)
/* The ELF version doesn't encode [DS] or whatever at the end of symbols. */
#define RS6000_OUTPUT_BASENAME(FILE, NAME) \
assemble_name (FILE, NAME)
/* This macro gets just the user-specified name
out of the string in a SYMBOL_REF. Discard
a leading * or @. */
#define STRIP_NAME_ENCODING(VAR,SYMBOL_NAME) \
do { \
const char *_name = SYMBOL_NAME; \
while (*_name == '*' || *_name == '@') \
_name++; \
(VAR) = _name; \
} while (0)
/* This is how to output a reference to a user-level label named NAME.
`assemble_name' uses this. */
/* Override elfos.h definition. */
#undef ASM_OUTPUT_LABELREF
#define ASM_OUTPUT_LABELREF(FILE,NAME) \
do { \
const char *_name = NAME; \
if (*_name == '@') \
_name++; \
\
if (*_name == '*') \
fprintf (FILE, "%s", _name + 1); \
else \
asm_fprintf (FILE, "%U%s", _name); \
} while (0)
/* But, to make this work, we have to output the stabs for the function
name *first*... */
#define DBX_FUNCTION_FIRST
/* This is the end of what might become sysv4dbx.h. */
#ifndef TARGET_VERSION
#define TARGET_VERSION fprintf (stderr, " (PowerPC System V.4)");
#endif
#ifndef CPP_PREDEFINES
#define CPP_PREDEFINES \
"-DPPC -Dunix -D__svr4__ -Asystem=unix -Asystem=svr4 -Acpu=powerpc -Amachine=powerpc"
#endif
/* Pass various options to the assembler. */
/* Override svr4.h definition. */
#undef ASM_SPEC
#define ASM_SPEC "%(asm_cpu) \
%{.s: %{mregnames} %{mno-regnames}} %{.S: %{mregnames} %{mno-regnames}} \
%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \
%{mrelocatable} %{mrelocatable-lib} %{fpic:-K PIC} %{fPIC:-K PIC} \
%{memb} %{!memb: %{msdata: -memb} %{msdata=eabi: -memb}} \
%{mlittle} %{mlittle-endian} %{mbig} %{mbig-endian} \
%{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
%{mcall-freebsd: -mbig} \
%{mcall-i960-old: -mlittle} \
%{mcall-linux: -mbig} \
%{mcall-netbsd: -mbig} \
}}}}"
#define CC1_ENDIAN_BIG_SPEC ""
#define CC1_ENDIAN_LITTLE_SPEC "\
%{!mstrict-align: %{!mno-strict-align: \
%{!mcall-i960-old: \
-mstrict-align \
} \
}}"
#define CC1_ENDIAN_DEFAULT_SPEC "%(cc1_endian_big_spec)"
/* Pass -G xxx to the compiler and set correct endian mode. */
#define CC1_SPEC "%{G*} \
%{mlittle: %(cc1_endian_little)} %{!mlittle: %{mlittle-endian: %(cc1_endian_little)}} \
%{mbig: %(cc1_endian_big)} %{!mbig: %{mbig-endian: %(cc1_endian_big)}} \
%{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
%{mcall-aixdesc: -mbig %(cc1_endian_big) } \
%{mcall-freebsd: -mbig %(cc1_endian_big) } \
%{mcall-i960-old: -mlittle %(cc1_endian_little) } \
%{mcall-linux: -mbig %(cc1_endian_big) } \
%{mcall-netbsd: -mbig %(cc1_endian_big) } \
%{!mcall-aixdesc: %{!mcall-freebsd: %{!mcall-i960-old: %{!mcall-linux: %{!mcall-netbsd: \
%(cc1_endian_default) \
}}}}} \
}}}} \
%{mno-sdata: -msdata=none } \
%{meabi: %{!mcall-*: -mcall-sysv }} \
%{!meabi: %{!mno-eabi: \
%{mrelocatable: -meabi } \
%{mcall-freebsd: -mno-eabi } \
%{mcall-i960-old: -meabi } \
%{mcall-linux: -mno-eabi } \
%{mcall-netbsd: -mno-eabi }}} \
%{msdata: -msdata=default} \
%{mno-sdata: -msdata=none} \
%{profile: -p}"
/* Don't put -Y P,<path> for cross compilers. */
#ifndef CROSS_COMPILE
#define LINK_PATH_SPEC "\
%{!R*:%{L*:-R %*}} \
%{!nostdlib: %{!YP,*: \
%{compat-bsd: \
%{p:-Y P,/usr/ucblib:/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
%{!p:-Y P,/usr/ucblib:/usr/ccs/lib:/usr/lib}} \
%{!R*: %{!L*: -R /usr/ucblib}} \
%{!compat-bsd: \
%{p:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
%{!p:-Y P,/usr/ccs/lib:/usr/lib}}}}"
#else
#define LINK_PATH_SPEC ""
#endif
/* Default starting address if specified. */
#define LINK_START_SPEC "\
%{mads: %(link_start_ads) } \
%{myellowknife: %(link_start_yellowknife) } \
%{mmvme: %(link_start_mvme) } \
%{msim: %(link_start_sim) } \
%{mcall-freebsd: %(link_start_freebsd) } \
%{mcall-linux: %(link_start_linux) } \
%{mcall-netbsd: %(link_start_netbsd) } \
%{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mcall-linux: \
%{!mcall-netbsd: %{!mcall-freebsd: %(link_start_default) }}}}}}}"
#define LINK_START_DEFAULT_SPEC ""
/* Override svr4.h definition. */
#undef LINK_SPEC
#define LINK_SPEC "\
%{h*} %{v:-V} %{!msdata=none:%{G*}} %{msdata=none:-G0} \
%{YP,*} %{R*} \
%{Qy:} %{!Qn:-Qy} \
%(link_shlib) \
%{!Wl,-T*: %{!T*: %(link_start) }} \
%(link_target) \
%(link_os)"
/* For now, turn off shared libraries by default. */
#ifndef SHARED_LIB_SUPPORT
#define NO_SHARED_LIB_SUPPORT
#endif
#ifndef NO_SHARED_LIB_SUPPORT
/* Shared libraries are default. */
#define LINK_SHLIB_SPEC "\
%{!static: %(link_path) %{!R*:%{L*:-R %*}}} \
%{mshlib: } \
%{static:-dn -Bstatic} \
%{shared:-G -dy -z text} \
%{symbolic:-Bsymbolic -G -dy -z text}"
#else
/* Shared libraries are not default. */
#define LINK_SHLIB_SPEC "\
%{mshlib: %(link_path) } \
%{!mshlib: %{!shared: %{!symbolic: -dn -Bstatic}}} \
%{static: } \
%{shared:-G -dy -z text %(link_path) } \
%{symbolic:-Bsymbolic -G -dy -z text %(link_path) }"
#endif
/* Override the default target of the linker. */
#define LINK_TARGET_SPEC "\
%{mlittle: --oformat elf32-powerpcle } %{mlittle-endian: --oformat elf32-powerpcle } \
%{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
%{mcall-i960-old: --oformat elf32-powerpcle} \
}}}}"
/* Any specific OS flags. */
#define LINK_OS_SPEC "\
%{mads: %(link_os_ads) } \
%{myellowknife: %(link_os_yellowknife) } \
%{mmvme: %(link_os_mvme) } \
%{msim: %(link_os_sim) } \
%{mcall-freebsd: %(link_os_freebsd) } \
%{mcall-linux: %(link_os_linux) } \
%{mcall-netbsd: %(link_os_netbsd) } \
%{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mcall-freebsd: %{!mcall-linux: %{!mcall-netbsd: %(link_os_default) }}}}}}}"
#define LINK_OS_DEFAULT_SPEC ""
#define CPP_SYSV_SPEC \
"%{mrelocatable*: -D_RELOCATABLE} \
%{fpic: -D__PIC__=1 -D__pic__=1} \
%{!fpic: %{fPIC: -D__PIC__=2 -D__pic__=2}} \
%{mlong-double-128: -D__LONG_DOUBLE_128__=1} \
%{!mlong-double-64: %(cpp_longdouble_default)} \
%{mcall-sysv: -D_CALL_SYSV} \
%{mcall-aix: -D_CALL_AIX} %{mcall-aixdesc: -D_CALL_AIX -D_CALL_AIXDESC} \
%{!mcall-sysv: %{!mcall-aix: %{!mcall-aixdesc: %(cpp_sysv_default) }}} \
%{msoft-float: -D_SOFT_FLOAT} \
%{!msoft-float: %{!mhard-float: \
%{mcpu=401: -D_SOFT_FLOAT} \
%{mcpu=403: -D_SOFT_FLOAT} \
%{mcpu=ec603e: -D_SOFT_FLOAT} \
%{mcpu=801: -D_SOFT_FLOAT} \
%{mcpu=821: -D_SOFT_FLOAT} \
%{mcpu=823: -D_SOFT_FLOAT} \
%{mcpu=860: -D_SOFT_FLOAT} \
%{!mcpu*: %(cpp_float_default) }}}"
/* Whether floating point is disabled by default. */
#define CPP_FLOAT_DEFAULT_SPEC ""
/* Whether 'long double' is 128 bits by default. */
#define CPP_LONGDOUBLE_DEFAULT_SPEC ""
#define CPP_SYSV_DEFAULT_SPEC "-D_CALL_SYSV"
#define CPP_ENDIAN_BIG_SPEC "-D_BIG_ENDIAN -D__BIG_ENDIAN__ -Amachine=bigendian"
#define CPP_ENDIAN_LITTLE_SPEC "-D_LITTLE_ENDIAN -D__LITTLE_ENDIAN__ -Amachine=littleendian"
#define CPP_ENDIAN_SPEC \
"%{mlittle: %(cpp_endian_little) } \
%{mlittle-endian: %(cpp_endian_little) } \
%{mbig: %(cpp_endian_big) } \
%{mbig-endian: %(cpp_endian_big) } \
%{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
%{mcall-freebsd: %(cpp_endian_big) } \
%{mcall-linux: %(cpp_endian_big) } \
%{mcall-netbsd: %(cpp_endian_big) } \
%{mcall-i960-old: %(cpp_endian_little) } \
%{mcall-aixdesc: %(cpp_endian_big) } \
%{!mcall-linux: %{!mcall-freebsd: %{!mcall-netbsd: %{!mcall-aixdesc: %(cpp_endian_default) }}}}}}}}"
#define CPP_ENDIAN_DEFAULT_SPEC "%(cpp_endian_big)"
/* Override rs6000.h definition. */
#undef CPP_SPEC
#define CPP_SPEC "%{posix: -D_POSIX_SOURCE} %(cpp_sysv) %(cpp_endian) %(cpp_cpu) \
%{mads: %(cpp_os_ads) } \
%{myellowknife: %(cpp_os_yellowknife) } \
%{mmvme: %(cpp_os_mvme) } \
%{msim: %(cpp_os_sim) } \
%{mcall-freebsd: %(cpp_os_freebsd) } \
%{mcall-linux: %(cpp_os_linux) } \
%{mcall-netbsd: %(cpp_os_netbsd) } \
%{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mcall-freebsd: %{!mcall-linux: %{!mcall-netbsd: %(cpp_os_default) }}}}}}}"
#define CPP_OS_DEFAULT_SPEC ""
/* Override svr4.h definition. */
#undef STARTFILE_SPEC
#define STARTFILE_SPEC "\
%{mads: %(startfile_ads) } \
%{myellowknife: %(startfile_yellowknife) } \
%{mmvme: %(startfile_mvme) } \
%{msim: %(startfile_sim) } \
%{mcall-freebsd: %(startfile_freebsd) } \
%{mcall-linux: %(startfile_linux) } \
%{mcall-netbsd: %(startfile_netbsd) } \
%{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mcall-freebsd: %{!mcall-linux: %{!mcall-netbsd: %(startfile_default) }}}}}}}"
#define STARTFILE_DEFAULT_SPEC ""
/* Override svr4.h definition. */
#undef LIB_SPEC
#define LIB_SPEC "\
%{mads: %(lib_ads) } \
%{myellowknife: %(lib_yellowknife) } \
%{mmvme: %(lib_mvme) } \
%{msim: %(lib_sim) } \
%{mcall-freebsd: %(lib_freebsd) } \
%{mcall-linux: %(lib_linux) } \
%{mcall-netbsd: %(lib_netbsd) } \
%{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mcall-freebsd: %{!mcall-linux: %{!mcall-netbsd: %(lib_default) }}}}}}}"
#define LIB_DEFAULT_SPEC ""
/* Override svr4.h definition. */
#undef ENDFILE_SPEC
#define ENDFILE_SPEC "\
%{mads: %(endfile_ads)} \
%{myellowknife: %(endfile_yellowknife)} \
%{mmvme: %(endfile_mvme)} \
%{msim: %(endfile_sim)} \
%{mcall-freebsd: %(endfile_freebsd) } \
%{mcall-linux: %(endfile_linux) } \
%{mcall-netbsd: %(endfile_netbsd) } \
%{mvxworks: %(endfile_vxworks) } \
%{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mcall-freebsd: %{!mcall-linux: %{!mcall-netbsd: %{!mvxworks: %(endfile_default) }}}}}}}}"
#define ENDFILE_DEFAULT_SPEC ""
/* Motorola ADS support. */
#define LIB_ADS_SPEC "--start-group -lads -lc --end-group"
#define STARTFILE_ADS_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
#define ENDFILE_ADS_SPEC "crtend.o%s ecrtn.o%s"
#define LINK_START_ADS_SPEC "-T ads.ld%s"
#define LINK_OS_ADS_SPEC ""
#define CPP_OS_ADS_SPEC ""
/* Motorola Yellowknife support. */
#define LIB_YELLOWKNIFE_SPEC "--start-group -lyk -lc --end-group"
#define STARTFILE_YELLOWKNIFE_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
#define ENDFILE_YELLOWKNIFE_SPEC "crtend.o%s ecrtn.o%s"
#define LINK_START_YELLOWKNIFE_SPEC "-T yellowknife.ld%s"
#define LINK_OS_YELLOWKNIFE_SPEC ""
#define CPP_OS_YELLOWKNIFE_SPEC ""
/* Motorola MVME support. */
#define LIB_MVME_SPEC "--start-group -lmvme -lc --end-group"
#define STARTFILE_MVME_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
#define ENDFILE_MVME_SPEC "crtend.o%s ecrtn.o%s"
#define LINK_START_MVME_SPEC "-Ttext 0x40000"
#define LINK_OS_MVME_SPEC ""
#define CPP_OS_MVME_SPEC ""
/* PowerPC simulator based on netbsd system calls support. */
#define LIB_SIM_SPEC "--start-group -lsim -lc --end-group"
#define STARTFILE_SIM_SPEC "ecrti.o%s sim-crt0.o%s crtbegin.o%s"
#define ENDFILE_SIM_SPEC "crtend.o%s ecrtn.o%s"
#define LINK_START_SIM_SPEC ""
#define LINK_OS_SIM_SPEC "-m elf32ppcsim"
#define CPP_OS_SIM_SPEC ""
/* FreeBSD support. */
#define CPP_OS_FREEBSD_SPEC "\
-D__PPC__ -D__ppc__ -D__PowerPC__ -D__powerpc__ \
-Acpu=powerpc -Amachine=powerpc"
#define STARTFILE_FREEBSD_SPEC FBSD_STARTFILE_SPEC
#define ENDFILE_FREEBSD_SPEC FBSD_ENDFILE_SPEC
#define LIB_FREEBSD_SPEC FBSD_LIB_SPEC
#define LINK_START_FREEBSD_SPEC ""
#define LINK_OS_FREEBSD_SPEC "\
%{symbolic:-Bsymbolic}"
/* GNU/Linux support. */
#ifdef USE_GNULIBC_1
#define LIB_LINUX_SPEC "%{mnewlib: --start-group -llinux -lc --end-group } \
%{!mnewlib: -lc }"
#else
#define LIB_LINUX_SPEC "%{mnewlib: --start-group -llinux -lc --end-group } \
%{!mnewlib: %{shared:-lc} %{!shared: %{pthread:-lpthread } \
%{profile:-lc_p} %{!profile:-lc}}}"
#endif
#define STARTFILE_LINUX_SPEC "\
%{!shared: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}} \
%{mnewlib: ecrti.o%s} %{!mnewlib: crti.o%s} \
%{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
#define ENDFILE_LINUX_SPEC "%{!shared:crtend.o%s} %{shared:crtendS.o%s} \
%{mnewlib: ecrtn.o%s} %{!mnewlib: crtn.o%s}"
#define LINK_START_LINUX_SPEC ""
#define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
%{rdynamic:-export-dynamic} \
%{!dynamic-linker:-dynamic-linker /lib/ld.so.1}}}"
#ifdef USE_GNULIBC_1
#define CPP_OS_LINUX_SPEC "-D__unix__ -D__linux__ \
%{!undef: \
%{!ansi: \
%{!std=*:-Dunix -D__unix -Dlinux -D__linux} \
%{std=gnu*:-Dunix -D__unix -Dlinux -D__linux}}} \
-Asystem=unix -Asystem=posix"
#else
#define CPP_OS_LINUX_SPEC "-D__unix__ -D__linux__ \
%{!undef: \
%{!ansi: \
%{!std=*:-Dunix -D__unix -Dlinux -D__linux} \
%{std=gnu*:-Dunix -D__unix -Dlinux -D__linux}}} \
-Asystem=unix -Asystem=posix %{pthread:-D_REENTRANT}"
#endif
/* NetBSD support. */
#define LIB_NETBSD_SPEC "\
%{profile:-lgmon -lc_p} %{!profile:-lc}"
#define STARTFILE_NETBSD_SPEC "\
ncrti.o%s crt0.o%s \
%{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
#define ENDFILE_NETBSD_SPEC "\
%{!shared:crtend.o%s} %{shared:crtendS.o%s} \
ncrtn.o%s"
#define LINK_START_NETBSD_SPEC "\
"
#define LINK_OS_NETBSD_SPEC "\
%{!shared: %{!static: \
%{rdynamic:-export-dynamic} \
%{!dynamic-linker:-dynamic-linker /usr/libexec/ld.elf_so}}}"
#define CPP_OS_NETBSD_SPEC "\
-D__powerpc__ -D__NetBSD__ -D__ELF__ -D__KPRINTF_ATTRIBUTE__"
/* VxWorks support. */
/* VxWorks does all the library stuff itself. */
#define LIB_VXWORKS_SPEC ""
/* VxWorks provides the functionality of crt0.o and friends itself. */
#define STARTFILE_VXWORKS_SPEC ""
#define ENDFILE_VXWORKS_SPEC ""
/* Because it uses ld -r, vxworks has no start/end files, nor starting
address. */
#define LINK_START_VXWORKS_SPEC ""
#define LINK_OS_VXWORKS_SPEC "-r"
#define CPP_OS_VXWORKS_SPEC "\
-DCPU_FAMILY=PPC \
%{!mcpu*: \
%{mpowerpc*: -DCPU=PPC603} \
%{!mno-powerpc: -DCPU=PPC603}} \
%{mcpu=powerpc: -DCPU=PPC603} \
%{mcpu=401: -DCPU=PPC403} \
%{mcpu=403: -DCPU=PPC403} \
%{mcpu=601: -DCPU=PPC601} \
%{mcpu=602: -DCPU=PPC603} \
%{mcpu=603: -DCPU=PPC603} \
%{mcpu=603e: -DCPU=PPC603} \
%{mcpu=ec603e: -DCPU=PPC603} \
%{mcpu=604: -DCPU=PPC604} \
%{mcpu=604e: -DCPU=PPC604} \
%{mcpu=620: -DCPU=PPC604} \
%{mcpu=740: -DCPU=PPC603} \
%{mcpu=7450: -DCPU=PPC603} \
%{mcpu=750: -DCPU=PPC603} \
%{mcpu=801: -DCPU=PPC603} \
%{mcpu=821: -DCPU=PPC603} \
%{mcpu=823: -DCPU=PPC603} \
%{mcpu=860: -DCPU=PPC603}"
/* Define any extra SPECS that the compiler needs to generate. */
/* Override rs6000.h definition. */
#undef SUBTARGET_EXTRA_SPECS
#define SUBTARGET_EXTRA_SPECS \
{ "cpp_sysv", CPP_SYSV_SPEC }, \
{ "cpp_sysv_default", CPP_SYSV_DEFAULT_SPEC }, \
{ "cpp_endian_default", CPP_ENDIAN_DEFAULT_SPEC }, \
{ "cpp_endian", CPP_ENDIAN_SPEC }, \
{ "lib_ads", LIB_ADS_SPEC }, \
{ "lib_yellowknife", LIB_YELLOWKNIFE_SPEC }, \
{ "lib_mvme", LIB_MVME_SPEC }, \
{ "lib_sim", LIB_SIM_SPEC }, \
{ "lib_freebsd", LIB_FREEBSD_SPEC }, \
{ "lib_linux", LIB_LINUX_SPEC }, \
{ "lib_netbsd", LIB_NETBSD_SPEC }, \
{ "lib_vxworks", LIB_VXWORKS_SPEC }, \
{ "lib_default", LIB_DEFAULT_SPEC }, \
{ "startfile_ads", STARTFILE_ADS_SPEC }, \
{ "startfile_yellowknife", STARTFILE_YELLOWKNIFE_SPEC }, \
{ "startfile_mvme", STARTFILE_MVME_SPEC }, \
{ "startfile_sim", STARTFILE_SIM_SPEC }, \
{ "startfile_freebsd", STARTFILE_FREEBSD_SPEC }, \
{ "startfile_linux", STARTFILE_LINUX_SPEC }, \
{ "startfile_netbsd", STARTFILE_NETBSD_SPEC }, \
{ "startfile_vxworks", STARTFILE_VXWORKS_SPEC }, \
{ "startfile_default", STARTFILE_DEFAULT_SPEC }, \
{ "endfile_ads", ENDFILE_ADS_SPEC }, \
{ "endfile_yellowknife", ENDFILE_YELLOWKNIFE_SPEC }, \
{ "endfile_mvme", ENDFILE_MVME_SPEC }, \
{ "endfile_sim", ENDFILE_SIM_SPEC }, \
{ "endfile_freebsd", ENDFILE_FREEBSD_SPEC }, \
{ "endfile_linux", ENDFILE_LINUX_SPEC }, \
{ "endfile_netbsd", ENDFILE_NETBSD_SPEC }, \
{ "endfile_vxworks", ENDFILE_VXWORKS_SPEC }, \
{ "endfile_default", ENDFILE_DEFAULT_SPEC }, \
{ "link_path", LINK_PATH_SPEC }, \
{ "link_shlib", LINK_SHLIB_SPEC }, \
{ "link_target", LINK_TARGET_SPEC }, \
{ "link_start", LINK_START_SPEC }, \
{ "link_start_ads", LINK_START_ADS_SPEC }, \
{ "link_start_yellowknife", LINK_START_YELLOWKNIFE_SPEC }, \
{ "link_start_mvme", LINK_START_MVME_SPEC }, \
{ "link_start_sim", LINK_START_SIM_SPEC }, \
{ "link_start_freebsd", LINK_START_FREEBSD_SPEC }, \
{ "link_start_linux", LINK_START_LINUX_SPEC }, \
{ "link_start_netbsd", LINK_START_NETBSD_SPEC }, \
{ "link_start_vxworks", LINK_START_VXWORKS_SPEC }, \
{ "link_start_default", LINK_START_DEFAULT_SPEC }, \
{ "link_os", LINK_OS_SPEC }, \
{ "link_os_ads", LINK_OS_ADS_SPEC }, \
{ "link_os_yellowknife", LINK_OS_YELLOWKNIFE_SPEC }, \
{ "link_os_mvme", LINK_OS_MVME_SPEC }, \
{ "link_os_sim", LINK_OS_SIM_SPEC }, \
{ "link_os_freebsd", LINK_OS_FREEBSD_SPEC }, \
{ "link_os_linux", LINK_OS_LINUX_SPEC }, \
{ "link_os_netbsd", LINK_OS_NETBSD_SPEC }, \
{ "link_os_vxworks", LINK_OS_VXWORKS_SPEC }, \
{ "link_os_default", LINK_OS_DEFAULT_SPEC }, \
{ "cc1_endian_big", CC1_ENDIAN_BIG_SPEC }, \
{ "cc1_endian_little", CC1_ENDIAN_LITTLE_SPEC }, \
{ "cc1_endian_default", CC1_ENDIAN_DEFAULT_SPEC }, \
{ "cpp_endian_big", CPP_ENDIAN_BIG_SPEC }, \
{ "cpp_endian_little", CPP_ENDIAN_LITTLE_SPEC }, \
{ "cpp_float_default", CPP_FLOAT_DEFAULT_SPEC }, \
{ "cpp_longdouble_default", CPP_LONGDOUBLE_DEFAULT_SPEC }, \
{ "cpp_os_ads", CPP_OS_ADS_SPEC }, \
{ "cpp_os_yellowknife", CPP_OS_YELLOWKNIFE_SPEC }, \
{ "cpp_os_mvme", CPP_OS_MVME_SPEC }, \
{ "cpp_os_sim", CPP_OS_SIM_SPEC }, \
{ "cpp_os_freebsd", CPP_OS_FREEBSD_SPEC }, \
{ "cpp_os_linux", CPP_OS_LINUX_SPEC }, \
{ "cpp_os_netbsd", CPP_OS_NETBSD_SPEC }, \
{ "cpp_os_vxworks", CPP_OS_VXWORKS_SPEC }, \
{ "cpp_os_default", CPP_OS_DEFAULT_SPEC },
/* Define this macro as a C expression for the initializer of an
array of string to tell the driver program which options are
defaults for this target and thus do not need to be handled
specially when using `MULTILIB_OPTIONS'.
Do not define this macro if `MULTILIB_OPTIONS' is not defined in
the target makefile fragment or if none of the options listed in
`MULTILIB_OPTIONS' are set by default. *Note Target Fragment::. */
#define MULTILIB_DEFAULTS { "mbig", "mcall-sysv" }
/* Define this macro if the code for function profiling should come
before the function prologue. Normally, the profiling code comes
after. */
#define PROFILE_BEFORE_PROLOGUE 1
/* Function name to call to do profiling. */
#define RS6000_MCOUNT "_mcount"
/* Define this macro (to a value of 1) if you want to support the
Win32 style pragmas #pragma pack(push,<n>)' and #pragma
pack(pop)'. The pack(push,<n>) pragma specifies the maximum
alignment (in bytes) of fields within a structure, in much the
same way as the __aligned__' and __packed__' __attribute__'s
do. A pack value of zero resets the behaviour to the default.
Successive invocations of this pragma cause the previous values to
be stacked, so that invocations of #pragma pack(pop)' will return
to the previous value. */
#define HANDLE_PRAGMA_PACK_PUSH_POP 1
/* Define library calls for quad FP operations. These are all part of the
PowerPC 32bit ABI. */
#define ADDTF3_LIBCALL "_q_add"
#define DIVTF3_LIBCALL "_q_div"
#define EXTENDDFTF2_LIBCALL "_q_dtoq"
#define EQTF2_LIBCALL "_q_feq"
#define GETF2_LIBCALL "_q_fge"
#define GTTF2_LIBCALL "_q_fgt"
#define LETF2_LIBCALL "_q_fle"
#define LTTF2_LIBCALL "_q_flt"
#define NETF2_LIBCALL "_q_fne"
#define FLOATSITF2_LIBCALL "_q_itoq"
#define MULTF3_LIBCALL "_q_mul"
#define NEGTF2_LIBCALL "_q_neg"
#define TRUNCTFDF2_LIBCALL "_q_qtod"
#define FIX_TRUNCTFSI2_LIBCALL "_q_qtoi"
#define TRUNCTFSF2_LIBCALL "_q_qtos"
#define FIXUNS_TRUNCTFSI2_LIBCALL "_q_qtou"
#define SQRTTF_LIBCALL "_q_sqrt"
#define EXTENDSFTF2_LIBCALL "_q_stoq"
#define SUBTF3_LIBCALL "_q_sub"
#define FLOATUNSSITF2_LIBCALL "_q_utoq"
#define INIT_TARGET_OPTABS \
do { \
if (TARGET_HARD_FLOAT) \
{ \
add_optab->handlers[(int) TFmode].libfunc \
= init_one_libfunc (ADDTF3_LIBCALL); \
sub_optab->handlers[(int) TFmode].libfunc \
= init_one_libfunc (SUBTF3_LIBCALL); \
neg_optab->handlers[(int) TFmode].libfunc \
= init_one_libfunc (NEGTF2_LIBCALL); \
smul_optab->handlers[(int) TFmode].libfunc \
= init_one_libfunc (MULTF3_LIBCALL); \
sdiv_optab->handlers[(int) TFmode].libfunc \
= init_one_libfunc (DIVTF3_LIBCALL); \
eqtf2_libfunc = init_one_libfunc (EQTF2_LIBCALL); \
netf2_libfunc = init_one_libfunc (NETF2_LIBCALL); \
gttf2_libfunc = init_one_libfunc (GTTF2_LIBCALL); \
getf2_libfunc = init_one_libfunc (GETF2_LIBCALL); \
lttf2_libfunc = init_one_libfunc (LTTF2_LIBCALL); \
letf2_libfunc = init_one_libfunc (LETF2_LIBCALL); \
trunctfsf2_libfunc = init_one_libfunc (TRUNCTFSF2_LIBCALL); \
trunctfdf2_libfunc = init_one_libfunc (TRUNCTFDF2_LIBCALL); \
extendsftf2_libfunc = init_one_libfunc (EXTENDSFTF2_LIBCALL); \
extenddftf2_libfunc = init_one_libfunc (EXTENDDFTF2_LIBCALL); \
floatsitf_libfunc = init_one_libfunc (FLOATSITF2_LIBCALL); \
fixtfsi_libfunc = init_one_libfunc (FIX_TRUNCTFSI2_LIBCALL); \
fixunstfsi_libfunc \
= init_one_libfunc (FIXUNS_TRUNCTFSI2_LIBCALL); \
if (TARGET_PPC_GPOPT || TARGET_POWER2) \
sqrt_optab->handlers[(int) TFmode].libfunc \
= init_one_libfunc (SQRTTF_LIBCALL); \
} \
} while (0)
/* Select a format to encode pointers in exception handling data. CODE
is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is
true if the symbol may be affected by dynamic relocations. */
#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
((flag_pic || TARGET_RELOCATABLE) \
? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4) \
: DW_EH_PE_absptr)
#define TARGET_ASM_EXCEPTION_SECTION readonly_data_section
#define DOUBLE_INT_ASM_OP "\t.quad\t"
/* Generate entries in .fixup for relocatable addresses. */
#define RELOCATABLE_NEEDS_FIXUP