352 lines
10 KiB
C
352 lines
10 KiB
C
/* 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 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 GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public 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 GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, 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 \
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-apcs 3%{mapcs-32:/32bit}%{mapcs-26:/26bit}%{!mapcs-26:%{!macps-32:/26bit}}"
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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 SELECT_RTX_SECTION(MODE,RTX,ALIGN) 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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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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{ \
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in_section = in_common; \
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} \
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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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func_ptr *ptr = __CTOR_LIST__ + 1; \
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while (*ptr) \
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(*ptr++) (); \
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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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func_ptr *ptr = __DTOR_LIST__ + 1; \
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while (*ptr) \
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(*ptr++) (); \
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} while (0)
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#define JUMP_TABLES_IN_TEXT_SECTION 1
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#ifndef ARM_OS_NAME
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#define ARM_OS_NAME "(generic)"
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#endif
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/* For the AOF linker, we need to reference __main to force the standard
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library to get linked in. */
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#define ASM_FILE_START(STREAM) \
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{ \
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fprintf ((STREAM), "%s Generated by gcc %s for ARM/%s\n", \
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ASM_COMMENT_START, version_string, ARM_OS_NAME); \
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fprintf ((STREAM), "__r0\tRN\t0\n"); \
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fprintf ((STREAM), "__a1\tRN\t0\n"); \
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fprintf ((STREAM), "__a2\tRN\t1\n"); \
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fprintf ((STREAM), "__a3\tRN\t2\n"); \
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fprintf ((STREAM), "__a4\tRN\t3\n"); \
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fprintf ((STREAM), "__v1\tRN\t4\n"); \
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fprintf ((STREAM), "__v2\tRN\t5\n"); \
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fprintf ((STREAM), "__v3\tRN\t6\n"); \
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fprintf ((STREAM), "__v4\tRN\t7\n"); \
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fprintf ((STREAM), "__v5\tRN\t8\n"); \
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fprintf ((STREAM), "__v6\tRN\t9\n"); \
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fprintf ((STREAM), "__sl\tRN\t10\n"); \
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fprintf ((STREAM), "__fp\tRN\t11\n"); \
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fprintf ((STREAM), "__ip\tRN\t12\n"); \
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fprintf ((STREAM), "__sp\tRN\t13\n"); \
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fprintf ((STREAM), "__lr\tRN\t14\n"); \
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fprintf ((STREAM), "__pc\tRN\t15\n"); \
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fprintf ((STREAM), "__f0\tFN\t0\n"); \
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fprintf ((STREAM), "__f1\tFN\t1\n"); \
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fprintf ((STREAM), "__f2\tFN\t2\n"); \
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fprintf ((STREAM), "__f3\tFN\t3\n"); \
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fprintf ((STREAM), "__f4\tFN\t4\n"); \
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fprintf ((STREAM), "__f5\tFN\t5\n"); \
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fprintf ((STREAM), "__f6\tFN\t6\n"); \
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fprintf ((STREAM), "__f7\tFN\t7\n"); \
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text_section (); \
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}
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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_FILE_END(STREAM) \
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do \
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{ \
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if (flag_pic) \
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aof_dump_pic_table (STREAM); \
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aof_dump_imports (STREAM); \
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fputs ("\tEND\n", (STREAM)); \
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} while (0);
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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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(ROUNDED), ASM_COMMENT_START, 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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(ROUNDED), ASM_COMMENT_START, SIZE))
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/* Output and Generation of Labels */
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extern int arm_main_function;
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#define ASM_GLOBALIZE_LABEL(STREAM,NAME) \
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do { \
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fprintf ((STREAM), "\tEXPORT\t"); \
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assemble_name ((STREAM), (NAME)); \
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fputc ('\n', (STREAM)); \
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if ((NAME)[0] == 'm' && ! strcmp ((NAME), "main")) \
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arm_main_function = 1; \
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} while (0)
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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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#define ASM_FORMAT_PRIVATE_NAME(OUTVAR,NAME,NUMBER) \
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((OUTVAR) = (char *) alloca (strlen ((NAME)) + 10), \
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sprintf ((OUTVAR), "%s.%d", (NAME), (NUMBER)))
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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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}
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#define ADDITIONAL_REGISTER_NAMES \
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{ \
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{"r0", 0}, {"a1", 0}, \
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{"r1", 1}, {"a2", 1}, \
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{"r2", 2}, {"a3", 2}, \
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{"r3", 3}, {"a4", 3}, \
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{"r4", 4}, {"v1", 4}, \
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{"r5", 5}, {"v2", 5}, \
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{"r6", 6}, {"v3", 6}, \
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{"r7", 7}, {"wr", 7}, \
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{"r8", 8}, {"v5", 8}, \
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{"r9", 9}, {"v6", 9}, \
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{"r10", 10}, {"sl", 10}, {"v7", 10}, \
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{"r11", 11}, {"fp", 11}, \
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{"r12", 12}, {"ip", 12}, \
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{"r13", 13}, {"sp", 13}, \
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{"r14", 14}, {"lr", 14}, \
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{"r15", 15}, {"pc", 15} \
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}
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#define REGISTER_PREFIX "__"
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#define USER_LABEL_PREFIX ""
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#define LOCAL_LABEL_PREFIX ""
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/* AOF does not prefix user function names with an underscore. */
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#define ARM_MCOUNT_NAME "_mcount"
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/* Output of Dispatch Tables */
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#define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM,BODY,VALUE,REL) \
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fprintf ((STREAM), "\tb\t|L..%d|\n", (VALUE))
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#define ASM_OUTPUT_ADDR_VEC_ELT(STREAM,VALUE) \
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fprintf ((STREAM), "\tDCD\t|L..%d|\n", (VALUE))
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/* A label marking the start of a jump table is a data label. */
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#define ASM_OUTPUT_CASE_LABEL(STREAM,PREFIX,NUM,TABLE) \
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fprintf ((STREAM), "\tALIGN\n|%s..%d|\n", (PREFIX), (NUM))
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/* Assembler Commands for Alignment */
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#define ASM_OUTPUT_SKIP(STREAM,NBYTES) \
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fprintf ((STREAM), "\t%%\t%d\n", (NBYTES))
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#define ASM_OUTPUT_ALIGN(STREAM,POWER) \
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do { \
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register int amount = 1 << (POWER); \
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if (amount == 2) \
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fprintf ((STREAM), "\tALIGN 2\n"); \
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else if (amount == 4) \
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fprintf ((STREAM), "\tALIGN\n"); \
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else \
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fprintf ((STREAM), "\tALIGN %d\n", amount); \
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} while (0)
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#undef DBX_DEBUGGING_INFO
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