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1 /* Definitions for PA_RISC with ELF format
2 Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
4 This file is part of GNU CC.
6 GNU CC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU CC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU CC; see the file COPYING. If not, write to
18 the Free Software Foundation, 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
22 /* A C expression whose value is RTL representing the location of the
23 incoming return address at the beginning of any function, before the
24 prologue. You only need to define this macro if you want to support
25 call frame debugging information like that provided by DWARF 2. */
26 #define INCOMING_RETURN_ADDR_RTX (gen_rtx_REG (word_mode, 2))
27 #define DWARF_FRAME_RETURN_COLUMN (DWARF_FRAME_REGNUM (2))
29 /* This macro chooses the encoding of pointers embedded in the exception
30 handling sections. If at all possible, this should be defined such
31 that the exception handling section will not require dynamic relocations,
32 and so may be read-only.
34 FIXME: We use DW_EH_PE_aligned to output a PLABEL constructor for
35 global function pointers. */
36 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
37 (CODE == 2 && GLOBAL ? DW_EH_PE_aligned : DW_EH_PE_absptr)
39 /* Handle special EH pointer encodings. Absolute, pc-relative, and
40 indirect are handled automatically. Since pc-relative encoding is
41 not possible on the PA and we don't have the infrastructure for
42 data relative encoding, we use aligned plabels for global function
44 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(FILE, ENCODING, SIZE, ADDR, DONE) \
46 if (((ENCODING) & 0x0F) == DW_EH_PE_aligned) \
48 fputs (integer_asm_op (SIZE, FALSE), FILE); \
50 assemble_name (FILE, XSTR (ADDR, 0)); \
55 #undef TARGET_OS_CPP_BUILTINS
56 #define TARGET_OS_CPP_BUILTINS() \
59 builtin_define ("__gnu_linux__"); \
60 builtin_define_std ("linux"); \
61 builtin_define_std ("unix"); \
62 builtin_assert ("machine=bigendian"); \
63 builtin_assert ("system=posix"); \
64 builtin_assert ("system=unix"); \
69 #define CPP_SPEC "%{fPIC|fpic|fPIE|fpie:-D__PIC__ -D__pic__} %{posix:-D_POSIX_SOURCE}"
73 "%{pthread:-lpthread} \
75 %{!shared:%{mieee-fp:-lieee} %{shared-libgcc:-lgcc} %{profile:-lc_p}%{!profile:-lc}}"
79 "%{v:-V} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*}"
81 /* Define this for shared library support because it isn't in the main
89 %{rdynamic:-export-dynamic} \
90 %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}} \
93 /* glibc's profiling functions don't need gcc to allocate counters. */
94 #define NO_PROFILE_COUNTERS 1
96 /* Define the strings used for the special svr4 .type and .size directives.
97 These strings generally do not vary from one system running svr4 to
98 another, but if a given system (e.g. m88k running svr) needs to use
99 different pseudo-op names for these, they may be overridden in the
100 file which includes this one. */
103 #define STRING_ASM_OP ".stringz"
105 #define TEXT_SECTION_ASM_OP "\t.text"
106 #define DATA_SECTION_ASM_OP "\t.data"
107 #define BSS_SECTION_ASM_OP "\t.section\t.bss"
109 #define TARGET_ASM_FILE_START pa_linux_file_start
111 /* We want local labels to start with period if made with asm_fprintf. */
112 #undef LOCAL_LABEL_PREFIX
113 #define LOCAL_LABEL_PREFIX "."
115 /* Define these to generate the Linux/ELF/SysV style of internal
116 labels all the time - i.e. to be compatible with
117 ASM_GENERATE_INTERNAL_LABEL in <elfos.h>. Compare these with the
118 ones in pa.h and note the lack of dollar signs in these. FIXME:
119 shouldn't we fix pa.h to use ASM_GENERATE_INTERNAL_LABEL instead? */
121 #undef ASM_OUTPUT_ADDR_VEC_ELT
122 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
123 if (TARGET_BIG_SWITCH) \
124 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); \
126 fprintf (FILE, "\tb .L%d\n\tnop\n", VALUE)
128 #undef ASM_OUTPUT_ADDR_DIFF_ELT
129 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
130 if (TARGET_BIG_SWITCH) \
131 fprintf (FILE, "\tstw %%r1,-16(%%r30)\n\tldw T'.L%d(%%r19),%%r1\n\tbv %%r0(%%r1)\n\tldw -16(%%r30),%%r1\n", VALUE); \
133 fprintf (FILE, "\tb .L%d\n\tnop\n", VALUE)
135 /* Use the default. */
136 #undef ASM_OUTPUT_LABEL
138 /* NOTE: (*targetm.asm_out.internal_label)() is defined for us by elfos.h, and
139 does what we want (i.e. uses colons). It must be compatible with
140 ASM_GENERATE_INTERNAL_LABEL(), so do not define it here. */
142 /* Use the default. */
143 #undef TARGET_ASM_GLOBALIZE_LABEL
144 /* Globalizing directive for a label. */
145 #define GLOBAL_ASM_OP ".globl "
147 /* FIXME: Hacked from the <elfos.h> one so that we avoid multiple
148 labels in a function declaration (since pa.c seems determined to do
151 #undef ASM_DECLARE_FUNCTION_NAME
152 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
155 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function"); \
156 ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \
160 /* As well as globalizing the label, we need to encode the label
161 to ensure a plabel is generated in an indirect call. */
163 #undef ASM_OUTPUT_EXTERNAL_LIBCALL
164 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
167 if (!FUNCTION_NAME_P (XSTR (FUN, 0))) \
168 hppa_encode_label (FUN); \
169 (*targetm.asm_out.globalize_label) (FILE, XSTR (FUN, 0)); \
173 /* Linux always uses gas. */