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/* Definitions for PA_RISC with ELF format
Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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. */
/* A C expression whose value is RTL representing the location of the
incoming return address at the beginning of any function, before the
prologue. You only need to define this macro if you want to support
call frame debugging information like that provided by DWARF 2. */
#define INCOMING_RETURN_ADDR_RTX (gen_rtx_REG (word_mode, 2))
#define DWARF_FRAME_RETURN_COLUMN (DWARF_FRAME_REGNUM (2))
/* This macro chooses the encoding of pointers embedded in the exception
handling sections. If at all possible, this should be defined such
that the exception handling section will not require dynamic relocations,
and so may be read-only.
FIXME: We use DW_EH_PE_aligned to output a PLABEL constructor for
global function pointers. */
#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
(CODE == 2 && GLOBAL ? DW_EH_PE_aligned : DW_EH_PE_absptr)
/* Handle special EH pointer encodings. Absolute, pc-relative, and
indirect are handled automatically. Since pc-relative encoding is
not possible on the PA and we don't have the infrastructure for
data relative encoding, we use aligned plabels for global function
pointers. */
#define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(FILE, ENCODING, SIZE, ADDR, DONE) \
do { \
if (((ENCODING) & 0x0F) == DW_EH_PE_aligned) \
{ \
fputs (integer_asm_op (SIZE, FALSE), FILE); \
fputs ("P%", FILE); \
assemble_name (FILE, XSTR (ADDR, 0)); \
goto DONE; \
} \
} while (0)
#undef TARGET_OS_CPP_BUILTINS
#define TARGET_OS_CPP_BUILTINS() \
do \
{ \
builtin_define ("__ELF__"); \
builtin_define ("__gnu_linux__"); \
builtin_define_std ("linux"); \
builtin_define_std ("unix"); \
builtin_assert ("machine=bigendian"); \
builtin_assert ("system=posix"); \
builtin_assert ("system=unix"); \
} \
while (0)
#undef CPP_SPEC
#define CPP_SPEC "%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{posix:-D_POSIX_SOURCE}"
#undef LIB_SPEC
#define LIB_SPEC \
"%{pthread:-lpthread} \
%{shared:-lgcc -lc} \
%{!shared:%{mieee-fp:-lieee} %{shared-libgcc:-lgcc} %{profile:-lc_p}%{!profile:-lc}}"
#undef ASM_SPEC
#define ASM_SPEC \
"%{v:-V} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*}"
/* Define this for shared library support because it isn't in the main
linux.h file. */
#undef LINK_SPEC
#define LINK_SPEC "\
%{shared:-shared} \
%{!shared: \
%{!static: \
%{rdynamic:-export-dynamic} \
%{!dynamic-linker:-dynamic-linker /lib/ld.so.1}} \
%{static:-static}}"
/* glibc's profiling functions don't need gcc to allocate counters. */
#define NO_PROFILE_COUNTERS 1
/* Define the strings used for the special svr4 .type and .size directives.
These strings generally do not vary from one system running svr4 to
another, but if a given system (e.g. m88k running svr) needs to use
different pseudo-op names for these, they may be overridden in the
file which includes this one. */
#undef STRING_ASM_OP
#define STRING_ASM_OP ".stringz"
#define TEXT_SECTION_ASM_OP "\t.text"
#define DATA_SECTION_ASM_OP "\t.data"
#define BSS_SECTION_ASM_OP "\t.section\t.bss"
/* Output at beginning of assembler file. We override the definition
from <linux.h> so that we can get the proper .LEVEL directive. */
#undef ASM_FILE_START
#define ASM_FILE_START(FILE) \
do \
{ \
if (write_symbols != NO_DEBUG) \
{ \
output_file_directive (FILE, main_input_filename); \
fputs ("\t.version\t\"01.01\"\n", FILE); \
} \
if (TARGET_64BIT) \
fputs("\t.LEVEL 2.0w\n", FILE); \
else if (TARGET_PA_20) \
fputs("\t.LEVEL 2.0\n", FILE); \
else if (TARGET_PA_11) \
fputs("\t.LEVEL 1.1\n", FILE); \
else \
fputs("\t.LEVEL 1.0\n", FILE); \
if (profile_flag) \
fputs ("\t.IMPORT _mcount, CODE\n", FILE); \
} \
while (0)
/* We want local labels to start with period if made with asm_fprintf. */
#undef LOCAL_LABEL_PREFIX
#define LOCAL_LABEL_PREFIX "."
/* Define these to generate the Linux/ELF/SysV style of internal
labels all the time - i.e. to be compatible with
ASM_GENERATE_INTERNAL_LABEL in <elfos.h>. Compare these with the
ones in pa.h and note the lack of dollar signs in these. FIXME:
shouldn't we fix pa.h to use ASM_GENERATE_INTERNAL_LABEL instead? */
#undef ASM_OUTPUT_ADDR_VEC_ELT
#define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
if (TARGET_BIG_SWITCH) \
fprintf (FILE, "\tstw %%r1,-16(%%r30)\n\tldil LR'.L%d,%%r1\n\tbe RR'.L%d(%%sr4,%%r1)\n\tldw -16(%%r30),%%r1\n", VALUE, VALUE); \
else \
fprintf (FILE, "\tb .L%d\n\tnop\n", VALUE)
#undef ASM_OUTPUT_ADDR_DIFF_ELT
#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
if (TARGET_BIG_SWITCH) \
fprintf (FILE, "\tstw %%r1,-16(%%r30)\n\tldw T'.L%d(%%r19),%%r1\n\tbv %%r0(%%r1)\n\tldw -16(%%r30),%%r1\n", VALUE); \
else \
fprintf (FILE, "\tb .L%d\n\tnop\n", VALUE)
/* Use the default. */
#undef ASM_OUTPUT_LABEL
/* NOTE: (*targetm.asm_out.internal_label)() is defined for us by elfos.h, and
does what we want (i.e. uses colons). It must be compatible with
ASM_GENERATE_INTERNAL_LABEL(), so do not define it here. */
/* Use the default. */
#undef TARGET_ASM_GLOBALIZE_LABEL
/* Globalizing directive for a label. */
#define GLOBAL_ASM_OP ".globl "
/* This definition is used inside pa.c to disable all
sibcall optimization, because sibcalls, stubs and
elf sections don't play well. */
#define TARGET_HAS_STUBS_AND_ELF_SECTIONS 1
/* FIXME: Hacked from the <elfos.h> one so that we avoid multiple
labels in a function declaration (since pa.c seems determined to do
it differently) */
#undef ASM_DECLARE_FUNCTION_NAME
#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
do \
{ \
ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function"); \
ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \
} \
while (0)
/* As well as globalizing the label, we need to encode the label
to ensure a plabel is generated in an indirect call. */
#undef ASM_OUTPUT_EXTERNAL_LIBCALL
#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
do \
{ \
if (!FUNCTION_NAME_P (XSTR (FUN, 0))) \
hppa_encode_label (FUN); \
(*targetm.asm_out.globalize_label) (FILE, XSTR (FUN, 0)); \
} \
while (0)
/* Linux always uses gas. */
#undef TARGET_GAS
#define TARGET_GAS 1
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