222 lines
7.2 KiB
C
222 lines
7.2 KiB
C
/* Definitions of target machine for GNU compiler, for ARM with PE obj format.
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Copyright (C) 1995, 1996, 1999, 2000, 2002, 2003 Free Software Foundation, Inc.
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Contributed by Doug Evans (dje@cygnus.com).
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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, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* Enable PE specific code. */
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#define ARM_PE 1
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#define ARM_PE_FLAG_CHAR '@'
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/* Ensure that @x. will be stripped from the function name. */
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#undef SUBTARGET_NAME_ENCODING_LENGTHS
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#define SUBTARGET_NAME_ENCODING_LENGTHS \
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case ARM_PE_FLAG_CHAR: return 3;
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#undef USER_LABEL_PREFIX
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#define USER_LABEL_PREFIX "_"
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/* Run-time Target Specification. */
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#undef TARGET_VERSION
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#define TARGET_VERSION fputs (" (ARM/pe)", stderr)
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/* Get tree.c to declare a target-specific specialization of
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merge_decl_attributes. */
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#define TARGET_DLLIMPORT_DECL_ATTRIBUTES
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/* Support the __declspec keyword by turning them into attributes.
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We currently only support: naked, dllimport, and dllexport.
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Note that the current way we do this may result in a collision with
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predefined attributes later on. This can be solved by using one attribute,
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say __declspec__, and passing args to it. The problem with that approach
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is that args are not accumulated: each new appearance would clobber any
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existing args. */
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#undef SUBTARGET_CPP_SPEC
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#define SUBTARGET_CPP_SPEC "-D__pe__ -D__declspec(x)=__attribute__((x))"
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/* Experimental addition for pr 7885.
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Ignore dllimport for functions. */
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#define TARGET_FLAG_NOP_FUN (1 << 24)
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#undef TARGET_NOP_FUN_DLLIMPORT
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#define TARGET_NOP_FUN_DLLIMPORT (target_flags & TARGET_FLAG_NOP_FUN)
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#undef SUBTARGET_SWITCHES
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#define SUBTARGET_SWITCHES \
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{ "nop-fun-dllimport", TARGET_FLAG_NOP_FUN, \
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N_("Ignore dllimport attribute for functions") }, \
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{ "no-nop-fun-dllimport", - TARGET_FLAG_NOP_FUN, "" },
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/* Defaulting to APCS-26 support is a legacy issue. It has been done
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that way for a long time, so changing it will probably break some
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people's worlds. Support for APCS-32 is now enabled as a multilib,
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and at some point in the future APCS-32 may become the default.
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Possibly when chips that support APCS-26 are no longer made. */
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#undef TARGET_DEFAULT
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#define TARGET_DEFAULT (ARM_FLAG_SOFT_FLOAT | TARGET_FLAG_NOP_FUN | ARM_FLAG_MMU_TRAPS)
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#undef MULTILIB_DEFAULTS
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#define MULTILIB_DEFAULTS \
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{ "marm", "mlittle-endian", "msoft-float", "mapcs-26", "mno-thumb-interwork" }
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#undef WCHAR_TYPE
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#define WCHAR_TYPE "short unsigned int"
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#undef WCHAR_TYPE_SIZE
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#define WCHAR_TYPE_SIZE 16
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/* r11 is fixed. */
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#undef SUBTARGET_CONDITIONAL_REGISTER_USAGE
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#define SUBTARGET_CONDITIONAL_REGISTER_USAGE \
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fixed_regs [11] = 1; \
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call_used_regs [11] = 1;
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/* Define this macro if in some cases global symbols from one translation
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unit may not be bound to undefined symbols in another translation unit
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without user intervention. For instance, under Microsoft Windows
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symbols must be explicitly imported from shared libraries (DLLs). */
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#define MULTIPLE_SYMBOL_SPACES
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#define TARGET_ASM_UNIQUE_SECTION arm_pe_unique_section
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#define SUPPORTS_ONE_ONLY 1
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/* Switch into a generic section. */
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#undef TARGET_ASM_NAMED_SECTION
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#define TARGET_ASM_NAMED_SECTION default_pe_asm_named_section
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#define TARGET_ASM_FILE_START_FILE_DIRECTIVE true
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/* Output a reference to a label. */
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#undef ASM_OUTPUT_LABELREF
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#define ASM_OUTPUT_LABELREF(STREAM, NAME) \
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asm_fprintf (STREAM, "%U%s", arm_strip_name_encoding (NAME))
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/* Output a function definition label. */
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#undef ASM_DECLARE_FUNCTION_NAME
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#define ASM_DECLARE_FUNCTION_NAME(STREAM, NAME, DECL) \
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do \
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{ \
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if (arm_dllexport_name_p (NAME)) \
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{ \
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drectve_section (); \
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fprintf (STREAM, "\t.ascii \" -export:%s\"\n", \
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arm_strip_name_encoding (NAME)); \
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function_section (DECL); \
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} \
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ARM_DECLARE_FUNCTION_NAME (STREAM, NAME, DECL); \
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if (TARGET_THUMB) \
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fprintf (STREAM, "\t.code 16\n"); \
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ASM_OUTPUT_LABEL (STREAM, NAME); \
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} \
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while (0)
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/* Output a common block. */
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#undef ASM_OUTPUT_COMMON
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#define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED) \
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do \
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{ \
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if (arm_dllexport_name_p (NAME)) \
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{ \
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drectve_section (); \
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fprintf ((STREAM), "\t.ascii \" -export:%s\"\n",\
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arm_strip_name_encoding (NAME)); \
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} \
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if (! arm_dllimport_name_p (NAME)) \
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{ \
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fprintf ((STREAM), "\t.comm\t"); \
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assemble_name ((STREAM), (NAME)); \
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asm_fprintf ((STREAM), ", %d\t%@ %d\n", \
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(int)(ROUNDED), (int)(SIZE)); \
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} \
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} \
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while (0)
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/* Output the label for an initialized variable. */
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#undef ASM_DECLARE_OBJECT_NAME
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#define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL) \
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do \
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{ \
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if (arm_dllexport_name_p (NAME)) \
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{ \
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enum in_section save_section = in_section; \
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drectve_section (); \
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fprintf (STREAM, "\t.ascii \" -export:%s\"\n",\
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arm_strip_name_encoding (NAME)); \
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switch_to_section (save_section, (DECL)); \
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} \
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ASM_OUTPUT_LABEL ((STREAM), (NAME)); \
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} \
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while (0)
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/* Support the ctors/dtors and other sections. */
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#define DRECTVE_SECTION_ASM_OP "\t.section .drectve"
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/* A list of other sections which the compiler might be "in" at any
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given time. */
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#undef EXTRA_SECTIONS
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#define EXTRA_SECTIONS in_drectve
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/* A list of extra section function definitions. */
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#undef EXTRA_SECTION_FUNCTIONS
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#define EXTRA_SECTION_FUNCTIONS \
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DRECTVE_SECTION_FUNCTION \
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SWITCH_TO_SECTION_FUNCTION
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#define DRECTVE_SECTION_FUNCTION \
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void \
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drectve_section (void) \
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{ \
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if (in_section != in_drectve) \
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{ \
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fprintf (asm_out_file, "%s\n", DRECTVE_SECTION_ASM_OP); \
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in_section = in_drectve; \
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} \
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}
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/* Switch to SECTION (an `enum in_section').
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??? This facility should be provided by GCC proper.
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The problem is that we want to temporarily switch sections in
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ASM_DECLARE_OBJECT_NAME and then switch back to the original section
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afterwards. */
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#define SWITCH_TO_SECTION_FUNCTION \
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static void \
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switch_to_section (enum in_section section, tree decl) \
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{ \
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switch (section) \
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{ \
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case in_text: text_section (); break; \
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case in_data: data_section (); break; \
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case in_named: named_section (decl, NULL, 0); break; \
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case in_readonly_data: readonly_data_section (); break; \
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case in_ctors: ctors_section (); break; \
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case in_dtors: dtors_section (); break; \
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case in_drectve: drectve_section (); break; \
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default: abort (); break; \
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} \
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}
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