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. */
21 /* Use DWARF2 debugging info and unwind. */
22 #undef PREFERRED_DEBUGGING_TYPE
23 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
24 #define DWARF2_ASM_LINE_DEBUG_INFO 1
26 /* A C expression whose value is RTL representing the location of the
27 incoming return address at the beginning of any function, before the
28 prologue. You only need to define this macro if you want to support
29 call frame debugging information like that provided by DWARF 2. */
30 #define INCOMING_RETURN_ADDR_RTX (gen_rtx_REG (word_mode, 2))
31 #define DWARF_FRAME_RETURN_COLUMN (DWARF_FRAME_REGNUM (2))
33 /* This macro chooses the encoding of pointers embedded in the exception
34 handling sections. If at all possible, this should be defined such
35 that the exception handling section will not require dynamic relocations,
36 and so may be read-only.
38 FIXME: We use DW_EH_PE_aligned to output a PLABEL constructor for
39 global function pointers. */
40 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
41 (CODE == 2 && GLOBAL ? DW_EH_PE_aligned : DW_EH_PE_absptr)
43 /* Handle special EH pointer encodings. Absolute, pc-relative, and
44 indirect are handled automatically. Since pc-relative encoding is
45 not possible on the PA and we don't have the infrastructure for
46 data relative encoding, we use aligned plabels for global function
48 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(FILE, ENCODING, SIZE, ADDR, DONE) \
50 if (((ENCODING) & 0x0F) == DW_EH_PE_aligned) \
52 fputs (integer_asm_op (SIZE, FALSE), FILE); \
54 assemble_name (FILE, XSTR (ADDR, 0)); \
59 #undef TARGET_OS_CPP_BUILTINS
60 #define TARGET_OS_CPP_BUILTINS() \
63 builtin_define ("__ELF__"); \
64 builtin_define ("__gnu_linux__"); \
65 builtin_define_std ("linux"); \
66 builtin_define_std ("unix"); \
67 builtin_assert ("machine=bigendian"); \
68 builtin_assert ("system=posix"); \
69 builtin_assert ("system=unix"); \
74 #define CPP_SPEC "%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{posix:-D_POSIX_SOURCE}"
78 "%{shared: -lgcc -lc} \
79 %{!shared: %{mieee-fp:-lieee} %{pthread:-lpthread} \
80 %{shared-libgcc: -lgcc} %{profile:-lc_p} %{!profile: -lc}}"
84 "%{v:-V} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*}"
86 /* Define this for shared library support because it isn't in the main
94 %{rdynamic:-export-dynamic} \
95 %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}} \
98 /* glibc's profiling functions don't need gcc to allocate counters. */
99 #define NO_PROFILE_COUNTERS 1
101 /* Define the strings used for the special svr4 .type and .size directives.
102 These strings generally do not vary from one system running svr4 to
103 another, but if a given system (e.g. m88k running svr) needs to use
104 different pseudo-op names for these, they may be overridden in the
105 file which includes this one. */
108 #define STRING_ASM_OP ".stringz"
110 #define TEXT_SECTION_ASM_OP "\t.text"
111 #define DATA_SECTION_ASM_OP "\t.data"
112 #define BSS_SECTION_ASM_OP "\t.section\t.bss"
114 /* Output at beginning of assembler file. We override the definition
115 from <linux.h> so that we can get the proper .LEVEL directive. */
116 #undef ASM_FILE_START
117 #define ASM_FILE_START(FILE) \
120 if (write_symbols != NO_DEBUG) \
122 output_file_directive (FILE, main_input_filename); \
123 fputs ("\t.version\t\"01.01\"\n", FILE); \
126 fputs("\t.LEVEL 2.0w\n", FILE); \
127 else if (TARGET_PA_20) \
128 fputs("\t.LEVEL 2.0\n", FILE); \
129 else if (TARGET_PA_11) \
130 fputs("\t.LEVEL 1.1\n", FILE); \
132 fputs("\t.LEVEL 1.0\n", FILE); \
134 fputs ("\t.IMPORT _mcount, CODE\n", FILE); \
138 /* Output a definition */
139 #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \
142 fprintf ((FILE), "\t%s\t", SET_ASM_OP); \
143 assemble_name (FILE, LABEL1); \
144 fprintf (FILE, ","); \
145 assemble_name (FILE, LABEL2); \
146 fprintf (FILE, "\n"); \
150 /* We want local labels to start with period if made with asm_fprintf. */
151 #undef LOCAL_LABEL_PREFIX
152 #define LOCAL_LABEL_PREFIX "."
154 /* Define these to generate the Linux/ELF/SysV style of internal
155 labels all the time - i.e. to be compatible with
156 ASM_GENERATE_INTERNAL_LABEL in <elfos.h>. Compare these with the
157 ones in pa.h and note the lack of dollar signs in these. FIXME:
158 shouldn't we fix pa.h to use ASM_GENERATE_INTERNAL_LABEL instead? */
160 #undef ASM_OUTPUT_ADDR_VEC_ELT
161 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
162 if (TARGET_BIG_SWITCH) \
163 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); \
165 fprintf (FILE, "\tb .L%d\n\tnop\n", VALUE)
167 #undef ASM_OUTPUT_ADDR_DIFF_ELT
168 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
169 if (TARGET_BIG_SWITCH) \
170 fprintf (FILE, "\tstw %%r1,-16(%%r30)\n\tldw T'.L%d(%%r19),%%r1\n\tbv %%r0(%%r1)\n\tldw -16(%%r30),%%r1\n", VALUE); \
172 fprintf (FILE, "\tb .L%d\n\tnop\n", VALUE)
174 /* Use the default. */
175 #undef ASM_OUTPUT_LABEL
177 /* NOTE: ASM_OUTPUT_INTERNAL_LABEL() is defined for us by elfos.h, and
178 does what we want (i.e. uses colons). It must be compatible with
179 ASM_GENERATE_INTERNAL_LABEL(), so do not define it here. */
181 /* Use the default. */
182 #undef TARGET_ASM_GLOBALIZE_LABEL
183 /* Globalizing directive for a label. */
184 #define GLOBAL_ASM_OP ".globl "
186 /* FIXME: Hacked from the <elfos.h> one so that we avoid multiple
187 labels in a function declaration (since pa.c seems determined to do
190 #undef ASM_DECLARE_FUNCTION_NAME
191 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
194 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function"); \
195 ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \
199 /* As well as globalizing the label, we need to encode the label
200 to ensure a plabel is generated in an indirect call. */
202 #undef ASM_OUTPUT_EXTERNAL_LIBCALL
203 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
206 if (!FUNCTION_NAME_P (XSTR (FUN, 0))) \
207 hppa_encode_label (FUN); \
208 (*targetm.asm_out.globalize_label) (FILE, XSTR (FUN, 0)); \
212 /* Linux always uses gas. */