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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. */
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)); \
60 #define CPP_PREDEFINES "-D__ELF__ -Dunix -D__hppa__ -D__gnu_linux__ -Dlinux -Asystem=unix -Asystem=posix -Acpu=hppa -Amachine=hppa -Amachine=bigendian"
64 "%{shared: -lgcc -lc} \
65 %{!shared: %{mieee-fp:-lieee} %{pthread:-lpthread} \
66 %{shared-libgcc: -lgcc} %{profile:-lc_p} %{!profile: -lc}}"
70 "%{v:-V} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*}"
72 /* Define this for shared library support because it isn't in the main
80 %{rdynamic:-export-dynamic} \
81 %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}} \
84 /* Sibcalls, stubs, and elf sections don't play well. */
85 #undef FUNCTION_OK_FOR_SIBCALL
86 #define FUNCTION_OK_FOR_SIBCALL(x) 0
88 /* glibc's profiling functions don't need gcc to allocate counters. */
89 #define NO_PROFILE_COUNTERS 1
91 /* Define the strings used for the special svr4 .type and .size directives.
92 These strings generally do not vary from one system running svr4 to
93 another, but if a given system (e.g. m88k running svr) needs to use
94 different pseudo-op names for these, they may be overridden in the
95 file which includes this one. */
98 #define STRING_ASM_OP ".stringz"
100 #define TEXT_SECTION_ASM_OP "\t.text"
101 #define DATA_SECTION_ASM_OP "\t.data"
102 #define BSS_SECTION_ASM_OP "\t.section\t.bss"
104 /* Output at beginning of assembler file. We override the definition
105 from <linux.h> so that we can get the proper .LEVEL directive. */
106 #undef ASM_FILE_START
107 #define ASM_FILE_START(FILE) \
110 if (write_symbols != NO_DEBUG) \
112 output_file_directive (FILE, main_input_filename); \
113 fputs ("\t.version\t\"01.01\"\n", FILE); \
116 fputs("\t.LEVEL 2.0w\n", FILE); \
117 else if (TARGET_PA_20) \
118 fputs("\t.LEVEL 2.0\n", FILE); \
119 else if (TARGET_PA_11) \
120 fputs("\t.LEVEL 1.1\n", FILE); \
122 fputs("\t.LEVEL 1.0\n", FILE); \
124 fputs ("\t.IMPORT _mcount, CODE\n", FILE); \
128 /* Output a definition */
129 #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \
132 fprintf ((FILE), "\t%s\t", SET_ASM_OP); \
133 assemble_name (FILE, LABEL1); \
134 fprintf (FILE, ","); \
135 assemble_name (FILE, LABEL2); \
136 fprintf (FILE, "\n"); \
140 /* We want local labels to start with period if made with asm_fprintf. */
141 #undef LOCAL_LABEL_PREFIX
142 #define LOCAL_LABEL_PREFIX "."
144 /* Define these to generate the Linux/ELF/SysV style of internal
145 labels all the time - i.e. to be compatible with
146 ASM_GENERATE_INTERNAL_LABEL in <elfos.h>. Compare these with the
147 ones in pa.h and note the lack of dollar signs in these. FIXME:
148 shouldn't we fix pa.h to use ASM_GENERATE_INTERNAL_LABEL instead? */
150 #undef ASM_OUTPUT_ADDR_VEC_ELT
151 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
152 if (TARGET_BIG_SWITCH) \
153 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); \
155 fprintf (FILE, "\tb .L%d\n\tnop\n", VALUE)
157 #undef ASM_OUTPUT_ADDR_DIFF_ELT
158 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
159 if (TARGET_BIG_SWITCH) \
160 fprintf (FILE, "\tstw %%r1,-16(%%r30)\n\tldw T'.L%d(%%r19),%%r1\n\tbv %%r0(%%r1)\n\tldw -16(%%r30),%%r1\n", VALUE); \
162 fprintf (FILE, "\tb .L%d\n\tnop\n", VALUE)
164 /* Use the default. */
165 #undef ASM_OUTPUT_LABEL
167 /* NOTE: ASM_OUTPUT_INTERNAL_LABEL() is defined for us by elfos.h, and
168 does what we want (i.e. uses colons). It must be compatible with
169 ASM_GENERATE_INTERNAL_LABEL(), so do not define it here. */
171 /* Use the default. */
172 #undef TARGET_ASM_GLOBALIZE_LABEL
173 /* Globalizing directive for a label. */
174 #define GLOBAL_ASM_OP ".globl "
176 /* FIXME: Hacked from the <elfos.h> one so that we avoid multiple
177 labels in a function declaration (since pa.c seems determined to do
180 #undef ASM_DECLARE_FUNCTION_NAME
181 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
184 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function"); \
185 ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \
189 /* Linux always uses gas. */