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jlechner |
/* Definitions of target machine for GNU compiler, for Advanced RISC Machines
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ARM compilation, AOF Assembler.
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Copyright (C) 1995, 1996, 1997, 2000, 2003, 2004
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Free Software Foundation, Inc.
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Contributed by Richard Earnshaw (rearnsha@armltd.co.uk)
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published
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by the Free Software Foundation; either version 2, or (at your
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option) any later version.
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GCC is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to
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the Free Software Foundation, 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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#define AOF_ASSEMBLER
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#define LINK_LIBGCC_SPECIAL 1
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#define LINK_SPEC "%{aof} %{bin} %{aif} %{ihf} %{shl,*} %{reent*} %{split} \
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%{ov*} %{reloc*} -nodebug"
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#define STARTFILE_SPEC "crtbegin.o%s"
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#define ENDFILE_SPEC "crtend.o%s"
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#ifndef ASM_SPEC
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#define ASM_SPEC "%{g -g} -arch 4 -apcs 3/32bit"
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#endif
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#ifndef LIB_SPEC
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#define LIB_SPEC "%{Eb: armlib_h.32b%s}%{!Eb: armlib_h.32l%s}"
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#endif
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#define LIBGCC_SPEC "libgcc.a%s"
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/* Dividing the Output into Sections (Text, Data, ...) */
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/* AOF Assembler syntax is a nightmare when it comes to areas, since once
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we change from one area to another, we can't go back again. Instead,
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we must create a new area with the same attributes and add the new output
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to that. Unfortunately, there is nothing we can do here to guarantee that
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two areas with the same attributes will be linked adjacently in the
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resulting executable, so we have to be careful not to do pc-relative
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addressing across such boundaries. */
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#define TEXT_SECTION_ASM_OP aof_text_section ()
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#define DATA_SECTION_ASM_OP aof_data_section ()
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#define EXTRA_SECTIONS in_zero_init, in_common
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#define EXTRA_SECTION_FUNCTIONS \
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ZERO_INIT_SECTION \
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COMMON_SECTION
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#define ZERO_INIT_SECTION \
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void \
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zero_init_section () \
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{ \
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static int zero_init_count = 1; \
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\
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if (in_section != in_zero_init) \
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{ \
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fprintf (asm_out_file, "\tAREA |C$$zidata%d|,NOINIT\n", \
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zero_init_count++); \
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in_section = in_zero_init; \
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} \
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}
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/* Used by ASM_OUTPUT_COMMON (below) to tell varasm.c that we've
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changed areas. */
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#define COMMON_SECTION \
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void \
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common_section () \
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{ \
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if (in_section != in_common) \
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in_section = in_common; \
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}
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#define CTOR_LIST_BEGIN \
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asm (CTORS_SECTION_ASM_OP); \
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extern func_ptr __CTOR_END__[1]; \
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func_ptr __CTOR_LIST__[1] = {__CTOR_END__};
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#define CTOR_LIST_END \
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asm (CTORS_SECTION_ASM_OP); \
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func_ptr __CTOR_END__[1] = { (func_ptr) 0 };
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#define DO_GLOBAL_CTORS_BODY \
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do \
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{ \
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func_ptr *ptr = __CTOR_LIST__ + 1; \
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\
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while (*ptr) \
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(*ptr++) (); \
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} \
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while (0)
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#define DTOR_LIST_BEGIN \
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asm (DTORS_SECTION_ASM_OP); \
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extern func_ptr __DTOR_END__[1]; \
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func_ptr __DTOR_LIST__[1] = {__DTOR_END__};
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#define DTOR_LIST_END \
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asm (DTORS_SECTION_ASM_OP); \
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func_ptr __DTOR_END__[1] = { (func_ptr) 0 };
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#define DO_GLOBAL_DTORS_BODY \
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do \
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{ \
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func_ptr *ptr = __DTOR_LIST__ + 1; \
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\
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while (*ptr) \
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(*ptr++) (); \
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} \
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while (0)
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/* We really want to put Thumb tables in a read-only data section, but
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switching to another section during function output is not
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possible. We could however do what the SPARC does and defer the
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whole table generation until the end of the function. */
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#define JUMP_TABLES_IN_TEXT_SECTION 1
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/* Some systems use __main in a way incompatible with its use in gcc, in these
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cases use the macros NAME__MAIN to give a quoted symbol and SYMBOL__MAIN to
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give the same symbol without quotes for an alternative entry point. You
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must define both, or neither. */
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#define NAME__MAIN "__gccmain"
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#define SYMBOL__MAIN __gccmain
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#define ASM_COMMENT_START ";"
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#define ASM_APP_ON ""
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#define ASM_APP_OFF ""
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#define ASM_OUTPUT_ASCII(STREAM, PTR, LEN) \
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{ \
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int i; \
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const char *ptr = (PTR); \
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fprintf ((STREAM), "\tDCB"); \
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for (i = 0; i < (long)(LEN); i++) \
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fprintf ((STREAM), " &%02x%s", \
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(unsigned ) *(ptr++), \
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(i + 1 < (long)(LEN) \
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? ((i & 3) == 3 ? "\n\tDCB" : ",") \
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: "\n")); \
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}
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#define IS_ASM_LOGICAL_LINE_SEPARATOR(C) ((C) == '\n')
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/* Output of Uninitialized Variables. */
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#define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED) \
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(common_section (), \
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fprintf ((STREAM), "\tAREA "), \
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assemble_name ((STREAM), (NAME)), \
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fprintf ((STREAM), ", DATA, COMMON\n\t%% %d\t%s size=%d\n", \
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(int)(ROUNDED), ASM_COMMENT_START, (int)(SIZE)))
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#define ASM_OUTPUT_LOCAL(STREAM, NAME, SIZE, ROUNDED) \
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(zero_init_section (), \
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assemble_name ((STREAM), (NAME)), \
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fprintf ((STREAM), "\n"), \
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fprintf ((STREAM), "\t%% %d\t%s size=%d\n", \
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(int)(ROUNDED), ASM_COMMENT_START, (int)(SIZE)))
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/* Output and Generation of Labels */
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extern int arm_main_function;
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/* Globalizing directive for a label. */
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#define GLOBAL_ASM_OP "\tEXPORT\t"
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#define ASM_OUTPUT_LABEL(STREAM,NAME) \
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do { \
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assemble_name (STREAM,NAME); \
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fputs ("\n", STREAM); \
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} while (0)
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#define ASM_DECLARE_FUNCTION_NAME(STREAM,NAME,DECL) \
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{ \
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if (TARGET_POKE_FUNCTION_NAME) \
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arm_poke_function_name ((STREAM), (NAME)); \
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ASM_OUTPUT_LABEL (STREAM, NAME); \
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if (! TREE_PUBLIC (DECL)) \
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{ \
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fputs ("\tKEEP ", STREAM); \
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ASM_OUTPUT_LABEL (STREAM, NAME); \
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} \
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aof_delete_import ((NAME)); \
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}
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#define ASM_DECLARE_OBJECT_NAME(STREAM,NAME,DECL) \
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{ \
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ASM_OUTPUT_LABEL (STREAM, NAME); \
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if (! TREE_PUBLIC (DECL)) \
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{ \
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fputs ("\tKEEP ", STREAM); \
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ASM_OUTPUT_LABEL (STREAM, NAME); \
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} \
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aof_delete_import ((NAME)); \
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}
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#define ASM_OUTPUT_EXTERNAL(STREAM,DECL,NAME) \
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aof_add_import ((NAME))
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#define ASM_OUTPUT_EXTERNAL_LIBCALL(STREAM,SYMREF) \
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(fprintf ((STREAM), "\tIMPORT\t"), \
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assemble_name ((STREAM), XSTR ((SYMREF), 0)), \
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fputc ('\n', (STREAM)))
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#define ASM_OUTPUT_LABELREF(STREAM,NAME) \
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fprintf ((STREAM), "|%s|", NAME)
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#define ASM_GENERATE_INTERNAL_LABEL(STRING,PREFIX,NUM) \
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sprintf ((STRING), "*|%s..%ld|", (PREFIX), (long)(NUM))
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/* How initialization functions are handled. */
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#define CTORS_SECTION_ASM_OP "\tAREA\t|C$$gnu_ctorsvec|, DATA, READONLY"
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#define DTORS_SECTION_ASM_OP "\tAREA\t|C$$gnu_dtorsvec|, DATA, READONLY"
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/* Output of Assembler Instructions. */
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#define REGISTER_NAMES \
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{ \
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"a1", "a2", "a3", "a4", \
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"v1", "v2", "v3", "v4", \
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"v5", "v6", "sl", "fp", \
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"ip", "sp", "lr", "pc", \
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"f0", "f1", "f2", "f3", \
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"f4", "f5", "f6", "f7", \
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"cc", "sfp", "afp", \
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| 241 |
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"mv0", "mv1", "mv2", "mv3", \
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"mv4", "mv5", "mv6", "mv7", \
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"mv8", "mv9", "mv10", "mv11", \
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"mv12", "mv13", "mv14", "mv15", \
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"wcgr0", "wcgr1", "wcgr2", "wcgr3", \
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"wr0", "wr1", "wr2", "wr3", \
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"wr4", "wr5", "wr6", "wr7", \
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"wr8", "wr9", "wr10", "wr11", \
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"wr12", "wr13", "wr14", "wr15", \
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"s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7", \
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"s8", "s9", "s10", "s11", "s12", "s13", "s14", "s15", \
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| 252 |
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"s16", "s17", "s18", "s19", "s20", "s21", "s22", "s23", \
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| 253 |
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"s24", "s25", "s26", "s27", "s28", "s29", "s30", "s31", \
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| 254 |
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"vfpcc" \
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| 255 |
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}
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| 256 |
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| 257 |
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#define ADDITIONAL_REGISTER_NAMES \
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| 258 |
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{ \
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| 259 |
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{"r0", 0}, {"a1", 0}, \
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| 260 |
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{"r1", 1}, {"a2", 1}, \
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| 261 |
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{"r2", 2}, {"a3", 2}, \
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| 262 |
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{"r3", 3}, {"a4", 3}, \
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| 263 |
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{"r4", 4}, {"v1", 4}, \
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| 264 |
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{"r5", 5}, {"v2", 5}, \
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| 265 |
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{"r6", 6}, {"v3", 6}, \
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| 266 |
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{"r7", 7}, {"wr", 7}, \
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| 267 |
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{"r8", 8}, {"v5", 8}, \
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| 268 |
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{"r9", 9}, {"v6", 9}, \
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| 269 |
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{"r10", 10}, {"sl", 10}, {"v7", 10}, \
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| 270 |
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{"r11", 11}, {"fp", 11}, \
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| 271 |
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{"r12", 12}, {"ip", 12}, \
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| 272 |
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{"r13", 13}, {"sp", 13}, \
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| 273 |
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{"r14", 14}, {"lr", 14}, \
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| 274 |
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{"r15", 15}, {"pc", 15}, \
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| 275 |
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{"d0", 63}, \
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| 276 |
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{"d1", 65}, \
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| 277 |
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{"d2", 67}, \
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| 278 |
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{"d3", 69}, \
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| 279 |
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{"d4", 71}, \
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| 280 |
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{"d5", 73}, \
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| 281 |
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{"d6", 75}, \
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| 282 |
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{"d7", 77}, \
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| 283 |
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{"d8", 79}, \
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| 284 |
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{"d9", 81}, \
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| 285 |
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{"d10", 83}, \
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| 286 |
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{"d11", 85}, \
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| 287 |
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{"d12", 87}, \
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| 288 |
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{"d13", 89}, \
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| 289 |
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{"d14", 91}, \
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| 290 |
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{"d15", 93} \
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| 291 |
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}
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| 292 |
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| 293 |
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#define REGISTER_PREFIX "__"
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| 294 |
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#define USER_LABEL_PREFIX ""
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| 295 |
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#define LOCAL_LABEL_PREFIX ""
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| 296 |
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| 297 |
|
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/* AOF does not prefix user function names with an underscore. */
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| 298 |
|
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#define ARM_MCOUNT_NAME "_mcount"
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| 299 |
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| 300 |
|
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/* Output of Dispatch Tables. */
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| 301 |
|
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#define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL) \
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| 302 |
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do \
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| 303 |
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{ \
|
| 304 |
|
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if (TARGET_ARM) \
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| 305 |
|
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fprintf ((STREAM), "\tb\t|L..%d|\n", (VALUE)); \
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| 306 |
|
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else \
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| 307 |
|
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fprintf ((STREAM), "\tDCD\t|L..%d| - |L..%d|\n", (VALUE), (REL)); \
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| 308 |
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} \
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| 309 |
|
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while (0)
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| 310 |
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| 311 |
|
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#define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \
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| 312 |
|
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fprintf ((STREAM), "\tDCD\t|L..%d|\n", (VALUE))
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| 313 |
|
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|
| 314 |
|
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/* A label marking the start of a jump table is a data label. */
|
| 315 |
|
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#define ASM_OUTPUT_CASE_LABEL(STREAM, PREFIX, NUM, TABLE) \
|
| 316 |
|
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fprintf ((STREAM), "\tALIGN\n|%s..%d|\n", (PREFIX), (NUM))
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| 317 |
|
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| 318 |
|
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/* Assembler Commands for Alignment. */
|
| 319 |
|
|
#define ASM_OUTPUT_SKIP(STREAM, NBYTES) \
|
| 320 |
|
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fprintf ((STREAM), "\t%%\t%d\n", (int) (NBYTES))
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| 321 |
|
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|
| 322 |
|
|
#define ASM_OUTPUT_ALIGN(STREAM, POWER) \
|
| 323 |
|
|
do \
|
| 324 |
|
|
{ \
|
| 325 |
|
|
int amount = 1 << (POWER); \
|
| 326 |
|
|
\
|
| 327 |
|
|
if (amount == 2) \
|
| 328 |
|
|
fprintf ((STREAM), "\tALIGN 2\n"); \
|
| 329 |
|
|
else if (amount == 4) \
|
| 330 |
|
|
fprintf ((STREAM), "\tALIGN\n"); \
|
| 331 |
|
|
else \
|
| 332 |
|
|
fprintf ((STREAM), "\tALIGN %d\n", amount); \
|
| 333 |
|
|
} \
|
| 334 |
|
|
while (0)
|
| 335 |
|
|
|
| 336 |
|
|
#undef DBX_DEBUGGING_INFO
|
