diff options
author | obrien <obrien@FreeBSD.org> | 2002-04-30 17:15:01 +0000 |
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committer | obrien <obrien@FreeBSD.org> | 2002-04-30 17:15:01 +0000 |
commit | 9a9ba1484fe61e96f047ac927b52c46679b80603 (patch) | |
tree | f0c2a71cd8d2de9d06c534ef7eb92519009a3c83 | |
parent | 81eeb21ad8cc3f6753bf74d1b6fbf62c45ec37ec (diff) | |
download | FreeBSD-src-9a9ba1484fe61e96f047ac927b52c46679b80603.zip FreeBSD-src-9a9ba1484fe61e96f047ac927b52c46679b80603.tar.gz |
i386 MD bits for Gcc 3.1.
These are totally untested. Do these work? Hell if I know, I have yet to
bootstrap using these bits. But people want them, so here they are.
-rw-r--r-- | contrib/gcc/config/i386/freebsd.h | 456 |
1 files changed, 29 insertions, 427 deletions
diff --git a/contrib/gcc/config/i386/freebsd.h b/contrib/gcc/config/i386/freebsd.h index a8a765d..01cc1db 100644 --- a/contrib/gcc/config/i386/freebsd.h +++ b/contrib/gcc/config/i386/freebsd.h @@ -25,13 +25,11 @@ Boston, MA 02111-1307, USA. */ /* $FreeBSD$ */ -#undef CPP_PREDEFINES -#define CPP_PREDEFINES \ - "-Di386 -Acpu(i386) -Amachine(i386)" \ - FBSD_CPP_PREDEFINES +#undef TARGET_VERSION +#define TARGET_VERSION fprintf (stderr, " (i386 FreeBSD/ELF)"); #undef CC1_SPEC -#define CC1_SPEC "\ +#define CC1_SPEC "%(cc1_cpu) %{profile:-p} \ %{gline:%{!g:%{!g0:%{!g1:%{!g2: -g1}}}}} \ %{maout: %{!mno-underscores: %{!munderscores: -munderscores }}}" @@ -119,19 +117,6 @@ Boston, MA 02111-1307, USA. */ #undef WCHAR_TYPE_SIZE #define WCHAR_TYPE_SIZE BITS_PER_WORD -/* This is the pseudo-op used to generate a 32-bit word of data with a - specific value in some section. */ - -#undef INT_ASM_OP -#define INT_ASM_OP ".long" - -/* Biggest alignment supported by the object file format of this - machine. Use this macro to limit the alignment which can be - specified using the `__attribute__ ((aligned (N)))' construct. If - not defined, the default value is `BIGGEST_ALIGNMENT'. */ - -#define MAX_OFILE_ALIGNMENT (32768*8) - #undef TARGET_VERSION #define TARGET_VERSION fprintf (stderr, " (i386 FreeBSD/ELF)"); @@ -154,8 +139,8 @@ Boston, MA 02111-1307, USA. */ { "no-underscores", -MASK_UNDERSCORES, "Do not add leading underscores to symbols"}, /* This goes away when the math emulator is fixed. */ -#undef TARGET_DEFAULT -#define TARGET_DEFAULT \ +#undef TARGET_SUBTARGET_DEFAULT +#define TARGET_SUBTARGET_DEFAULT \ (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_NO_FANCY_MATH_387) /* Don't default to pcc-struct-return, we want to retain compatibility with @@ -187,31 +172,8 @@ Boston, MA 02111-1307, USA. */ VOIDmode, 0); \ } while (0) -/* Indicate that jump tables go in the text section. This is - necessary when compiling PIC code. */ -#undef JUMP_TABLES_IN_TEXT_SECTION -#define JUMP_TABLES_IN_TEXT_SECTION (flag_pic) - -/* override the exception table positioning */ -#undef EXCEPTION_SECTION -#define EXCEPTION_SECTION() \ - do { \ - if (TARGET_ELF) \ - { \ - named_section (NULL_TREE, ".gcc_except_table", 0); \ - } \ - else \ - { \ - if (flag_pic) \ - data_section (); \ - else \ - readonly_data_section (); \ - } \ - } while (0); - /* Tell final.c that we don't need a label passed to mcount. */ -#undef NO_PROFILE_COUNTERS -#define NO_PROFILE_COUNTERS +#define NO_PROFILE_COUNTERS 1 /* Output assembler code to FILE to begin profiling of the current function. LABELNO is an optional label. */ @@ -228,32 +190,7 @@ Boston, MA 02111-1307, USA. */ /* Output assembler code to FILE to end profiling of the current function. */ -#undef FUNCTION_PROFILER_EPILOGUE -#define FUNCTION_PROFILER_EPILOGUE(FILE, DO_RTL) \ - do { \ - if (TARGET_PROFILER_EPILOGUE) \ - { \ - if (DO_RTL) \ - { \ - /* ".mexitcount" is specially handled in \ - ASM_HACK_SYMBOLREF () so that we don't need to handle \ - flag_pic or TARGET_AOUT here. */ \ - rtx xop; \ - xop = gen_rtx_MEM (FUNCTION_MODE, \ - gen_rtx_SYMBOL_REF (Pmode, ".mexitcount")); \ - emit_call_insn (gen_rtx (CALL, VOIDmode, xop, const0_rtx)); \ - } \ - else \ - { \ - /* XXX this !DO_RTL case is broken but not actually used. */ \ - char *_name = TARGET_AOUT ? "mcount" : ".mcount"; \ - if (flag_pic) \ - fprintf (FILE, "\tcall *%s@GOT(%%ebx)\n", _name); \ - else \ - fprintf (FILE, "\tcall %s\n", _name); \ - } \ - } \ - } while (0) +#undef FUNCTION_PROFILER_EPILOGUE /* BDE will need to fix this. */ /************************[ Assembler stuff ]********************************/ @@ -268,39 +205,23 @@ Boston, MA 02111-1307, USA. */ #undef ASM_APP_OFF #define ASM_APP_OFF "#NO_APP\n" -/* Enable alias attribute support. */ -#undef SET_ASM_OP -#define SET_ASM_OP ".set" - -/* This is how to begin an assembly language file. - The .file command should always begin the output. - ELF also needs a .version. */ - -#undef ASM_FILE_START -#define ASM_FILE_START(FILE) \ - do { \ - output_file_directive ((FILE), main_input_filename); \ - if (TARGET_ELF) \ - fprintf ((FILE), "\t.version\t\"01.01\"\n"); \ - } while (0) - /* This is how to store into the string BUF the symbol_ref name of an internal numbered label where PREFIX is the class of label and NUM is the number within the class. This is suitable for output with `assemble_name'. */ #undef ASM_GENERATE_INTERNAL_LABEL -#define ASM_GENERATE_INTERNAL_LABEL(BUF, PREFIX, NUMBER) \ - sprintf ((BUF), "*%s%s%d", (TARGET_UNDERSCORES) ? "" : ".", \ - (PREFIX), (NUMBER)) +#define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \ + sprintf ((LABEL), "*%s%s%u", (TARGET_UNDERSCORES) ? "" : ".", \ + (PREFIX), (unsigned) (NUM)) /* This is how to output an internal numbered label where PREFIX is the class of label and NUM is the number within the class. For most svr4/ELF systems, the convention is that any symbol which begins with a period is not put into the linker symbol table by the assembler. */ #undef ASM_OUTPUT_INTERNAL_LABEL -#define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \ - fprintf ((FILE), "%s%s%d:\n", (TARGET_UNDERSCORES) ? "" : ".", \ - (PREFIX), (NUM)) +#define ASM_OUTPUT_INTERNAL_LABEL(FILE, PREFIX, NUM) \ + fprintf ((FILE), "%s%s%u:\n", (TARGET_UNDERSCORES) ? "" : ".", \ + (PREFIX), (unsigned) (NUM)) /* This is how to output a reference to a user-level label named NAME. */ #undef ASM_OUTPUT_LABELREF @@ -325,15 +246,7 @@ Boston, MA 02111-1307, USA. */ /* This is how to hack on the symbol code of certain relcalcitrant symbols to modify their output in output_pic_addr_const (). */ -#undef ASM_HACK_SYMBOLREF_CODE -#define ASM_HACK_SYMBOLREF_CODE(NAME, CODE) \ - do { \ - /* Part of hack to avoid writing lots of rtl in \ - FUNCTION_PROFILER_EPILOGUE (). */ \ - char *_name = (NAME); \ - if (*_name == '.' && strcmp(_name + 1, "mexitcount") == 0) \ - (CODE) = 'X'; \ - } while (0) +#undef ASM_HACK_SYMBOLREF_CODE /* BDE will need to fix this. */ /* This is how to output an element of a case-vector that is relative. This is only used for PIC code. See comments by the `casesi' insn in @@ -435,250 +348,19 @@ Boston, MA 02111-1307, USA. */ } \ } while (0) -/* These macros generate the special .type and .size directives which - are used to set the corresponding fields of the linker symbol table - entries in an ELF object file under SVR4. These macros also output - the starting labels for the relevant functions/objects. */ +/* A C statement to output to the stdio stream FILE an assembler + command to advance the location counter to a multiple of 1<<LOG + bytes if it is within MAX_SKIP bytes. -/* Write the extra assembler code needed to declare a function properly. - Some svr4 assemblers need to also have something extra said about the - function's return value. We allow for that here. */ + This is used to align code labels according to Intel recommendations. */ -#undef ASM_DECLARE_FUNCTION_NAME -#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \ - do { \ - fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \ - assemble_name (FILE, NAME); \ - putc (',', FILE); \ - fprintf (FILE, TYPE_OPERAND_FMT, "function"); \ - putc ('\n', FILE); \ - ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \ - ASM_OUTPUT_LABEL(FILE, NAME); \ - } while (0) - -/* This is how to declare the size of a function. */ - -#undef ASM_DECLARE_FUNCTION_SIZE -#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \ - do { \ - if (!flag_inhibit_size_directive) \ - { \ - char label[256]; \ - static int labelno; \ - labelno++; \ - ASM_GENERATE_INTERNAL_LABEL (label, "Lfe", labelno); \ - ASM_OUTPUT_INTERNAL_LABEL (FILE, "Lfe", labelno); \ - fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \ - assemble_name (FILE, (FNAME)); \ - fprintf (FILE, ","); \ - assemble_name (FILE, label); \ - fprintf (FILE, "-"); \ - assemble_name (FILE, (FNAME)); \ - putc ('\n', FILE); \ - } \ - } while (0) - - -/* The routine used to output NUL terminated strings. We use a special - version of this for most svr4 targets because doing so makes the - generated assembly code more compact (and thus faster to assemble) - as well as more readable, especially for targets like the i386 - (where the only alternative is to output character sequences as - comma separated lists of numbers). */ - -#undef ASM_OUTPUT_LIMITED_STRING -#define ASM_OUTPUT_LIMITED_STRING(FILE, STR) \ - do { \ - register unsigned char *_limited_str = (unsigned char *) (STR); \ - register unsigned ch; \ - fprintf ((FILE), "\t%s\t\"", STRING_ASM_OP); \ - for (; (ch = *_limited_str); _limited_str++) \ - { \ - register int escape; \ - switch (escape = ESCAPES[ch]) \ - { \ - case 0: \ - putc (ch, (FILE)); \ - break; \ - case 1: \ - fprintf ((FILE), "\\%03o", ch); \ - break; \ - default: \ - putc ('\\', (FILE)); \ - putc (escape, (FILE)); \ - break; \ - } \ - } \ - fprintf ((FILE), "\"\n"); \ - } while (0) - -/* Switch into a generic section. - - We make the section read-only and executable for a function decl, - read-only for a const data decl, and writable for a non-const data decl. - - If the section has already been defined, we must not - emit the attributes here. The SVR4 assembler does not - recognize section redefinitions. - If DECL is NULL, no attributes are emitted. */ - -#undef ASM_OUTPUT_SECTION_NAME -#define ASM_OUTPUT_SECTION_NAME(FILE, DECL, NAME, RELOC) \ - do { \ - static struct section_info \ - { \ - struct section_info *next; \ - char *name; \ - enum sect_enum {SECT_RW, SECT_RO, SECT_EXEC} type; \ - } *sections; \ - struct section_info *s; \ - char *mode; \ - enum sect_enum type; \ - \ - for (s = sections; s; s = s->next) \ - if (!strcmp (NAME, s->name)) \ - break; \ - \ - if (DECL && TREE_CODE (DECL) == FUNCTION_DECL) \ - type = SECT_EXEC, mode = "ax"; \ - else if (DECL && DECL_READONLY_SECTION (DECL, RELOC)) \ - type = SECT_RO, mode = "a"; \ - else \ - type = SECT_RW, mode = "aw"; \ - \ - if (s == 0) \ - { \ - s = (struct section_info *) xmalloc (sizeof (struct section_info)); \ - s->name = xmalloc ((strlen (NAME) + 1) * sizeof (*NAME)); \ - strcpy (s->name, NAME); \ - s->type = type; \ - s->next = sections; \ - sections = s; \ - fprintf (FILE, ".section\t%s,\"%s\",@progbits\n", NAME, mode); \ - } \ - else \ - { \ - if (DECL && s->type != type) \ - error_with_decl (DECL, "%s causes a section type conflict"); \ - \ - fprintf (FILE, ".section\t%s\n", NAME); \ - } \ - } while (0) - -#undef MAKE_DECL_ONE_ONLY -#define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1) -#undef UNIQUE_SECTION_P -#define UNIQUE_SECTION_P(DECL) (DECL_ONE_ONLY (DECL)) -#undef UNIQUE_SECTION -#define UNIQUE_SECTION(DECL,RELOC) \ - do { \ - int len; \ - char *name, *string, *prefix; \ - \ - name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL)); \ - \ - if (! DECL_ONE_ONLY (DECL)) \ - { \ - prefix = "."; \ - if (TREE_CODE (DECL) == FUNCTION_DECL) \ - prefix = ".text."; \ - else if (DECL_READONLY_SECTION (DECL, RELOC)) \ - prefix = ".rodata."; \ - else \ - prefix = ".data."; \ - } \ - else if (TREE_CODE (DECL) == FUNCTION_DECL) \ - prefix = ".gnu.linkonce.t."; \ - else if (DECL_READONLY_SECTION (DECL, RELOC)) \ - prefix = ".gnu.linkonce.r."; \ - else \ - prefix = ".gnu.linkonce.d."; \ - \ - len = strlen (name) + strlen (prefix); \ - string = alloca (len + 1); \ - sprintf (string, "%s%s", prefix, name); \ - \ - DECL_SECTION_NAME (DECL) = build_string (len, string); \ - } while (0) - -/* A C statement or statements to switch to the appropriate - section for output of DECL. DECL is either a `VAR_DECL' node - or a constant of some sort. RELOC indicates whether forming - the initial value of DECL requires link-time relocations. */ - -#undef SELECT_SECTION -#define SELECT_SECTION(DECL,RELOC) \ - { \ - if (flag_pic && RELOC) \ - data_section (); \ - else if (TREE_CODE (DECL) == STRING_CST) \ - { \ - if (! flag_writable_strings) \ - const_section (); \ - else \ - data_section (); \ - } \ - else if (TREE_CODE (DECL) == VAR_DECL) \ - { \ - if (! DECL_READONLY_SECTION (DECL, RELOC)) \ - data_section (); \ - else \ - const_section (); \ - } \ - else \ - const_section (); \ +#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN +#define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE, LOG, MAX_SKIP) \ + if ((LOG) != 0) { \ + if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \ + else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \ } - -/* A C statement (sans semicolon) to output an element in the table of - global constructors. */ -#undef ASM_OUTPUT_CONSTRUCTOR -#define ASM_OUTPUT_CONSTRUCTOR(FILE, NAME) \ - do { \ - if (TARGET_ELF) \ - { \ - ctors_section (); \ - fprintf ((FILE), "%s ", INT_ASM_OP); \ - assemble_name ((FILE), (NAME)); \ - fprintf ((FILE), "\n"); \ - } \ - else \ - { \ - fprintf (asm_out_file, "%s \"%s__CTOR_LIST__\",22,0,0,", \ - ASM_STABS_OP, (TARGET_UNDERSCORES) ? "_" : ""); \ - assemble_name (asm_out_file, name); \ - fputc ('\n', asm_out_file); \ - } \ - } while (0) - -/* A C statement (sans semicolon) to output an element in the table of - global destructors. */ -#undef ASM_OUTPUT_DESTRUCTOR -#define ASM_OUTPUT_DESTRUCTOR(FILE, NAME) \ - do { \ - if (TARGET_ELF) \ - { \ - dtors_section (); \ - fprintf ((FILE), "%s ", INT_ASM_OP); \ - assemble_name ((FILE), (NAME)); \ - fprintf ((FILE), "\n"); \ - } \ - else \ - { \ - fprintf (asm_out_file, "%s \"%s__DTOR_LIST__\",22,0,0,", \ - ASM_STABS_OP, (TARGET_UNDERSCORES) ? "_" : ""); \ - assemble_name (asm_out_file, name); \ - fputc ('\n', asm_out_file); \ - } \ - } while (0) - -/* Define macro used to output shift-double opcodes when the shift - count is in %cl. Some assemblers require %cl as an argument; - some don't. - - *OLD* GAS requires the %cl argument, so override i386/unix.h. */ - -#undef AS3_SHIFT_DOUBLE -#define AS3_SHIFT_DOUBLE(a,b,c,d) AS3 (a,b,c,d) +#endif /************************[ Debugger stuff ]*********************************/ @@ -691,99 +373,19 @@ Boston, MA 02111-1307, USA. */ #undef DBX_FUNCTION_FIRST #define DBX_CHECK_FUNCTION_FIRST TARGET_ELF -/* Copy this from the svr4 specifications... */ -/* Define the register numbers to be used in Dwarf debugging information. - The SVR4 reference port C compiler uses the following register numbers - in its Dwarf output code: - 0 for %eax (gnu regno = 0) - 1 for %ecx (gnu regno = 2) - 2 for %edx (gnu regno = 1) - 3 for %ebx (gnu regno = 3) - 4 for %esp (gnu regno = 7) - 5 for %ebp (gnu regno = 6) - 6 for %esi (gnu regno = 4) - 7 for %edi (gnu regno = 5) - The following three DWARF register numbers are never generated by - the SVR4 C compiler or by the GNU compilers, but SDB on x86/svr4 - believes these numbers have these meanings. - 8 for %eip (no gnu equivalent) - 9 for %eflags (no gnu equivalent) - 10 for %trapno (no gnu equivalent) - It is not at all clear how we should number the FP stack registers - for the x86 architecture. If the version of SDB on x86/svr4 were - a bit less brain dead with respect to floating-point then we would - have a precedent to follow with respect to DWARF register numbers - for x86 FP registers, but the SDB on x86/svr4 is so completely - broken with respect to FP registers that it is hardly worth thinking - of it as something to strive for compatibility with. - The version of x86/svr4 SDB I have at the moment does (partially) - seem to believe that DWARF register number 11 is associated with - the x86 register %st(0), but that's about all. Higher DWARF - register numbers don't seem to be associated with anything in - particular, and even for DWARF regno 11, SDB only seems to under- - stand that it should say that a variable lives in %st(0) (when - asked via an `=' command) if we said it was in DWARF regno 11, - but SDB still prints garbage when asked for the value of the - variable in question (via a `/' command). - (Also note that the labels SDB prints for various FP stack regs - when doing an `x' command are all wrong.) - Note that these problems generally don't affect the native SVR4 - C compiler because it doesn't allow the use of -O with -g and - because when it is *not* optimizing, it allocates a memory - location for each floating-point variable, and the memory - location is what gets described in the DWARF AT_location - attribute for the variable in question. - Regardless of the severe mental illness of the x86/svr4 SDB, we - do something sensible here and we use the following DWARF - register numbers. Note that these are all stack-top-relative - numbers. - 11 for %st(0) (gnu regno = 8) - 12 for %st(1) (gnu regno = 9) - 13 for %st(2) (gnu regno = 10) - 14 for %st(3) (gnu regno = 11) - 15 for %st(4) (gnu regno = 12) - 16 for %st(5) (gnu regno = 13) - 17 for %st(6) (gnu regno = 14) - 18 for %st(7) (gnu regno = 15) -*/ -#undef DWARF_DBX_REGISTER_NUMBER -#define DWARF_DBX_REGISTER_NUMBER(n) \ -((n) == 0 ? 0 \ - : (n) == 1 ? 2 \ - : (n) == 2 ? 1 \ - : (n) == 3 ? 3 \ - : (n) == 4 ? 6 \ - : (n) == 5 ? 7 \ - : (n) == 6 ? 5 \ - : (n) == 7 ? 4 \ - : ((n) >= FIRST_STACK_REG && (n) <= LAST_STACK_REG) ? (n)+3 \ - : (-1)) - -/* Now what stabs expects in the register. */ -#undef STABS_DBX_REGISTER_NUMBER -#define STABS_DBX_REGISTER_NUMBER(n) \ -((n) == 0 ? 0 : \ - (n) == 1 ? 2 : \ - (n) == 2 ? 1 : \ - (n) == 3 ? 3 : \ - (n) == 4 ? 6 : \ - (n) == 5 ? 7 : \ - (n) == 6 ? 4 : \ - (n) == 7 ? 5 : \ - (n) + 4) - #undef DBX_REGISTER_NUMBER -#define DBX_REGISTER_NUMBER(n) ((write_symbols == DWARF2_DEBUG \ +#define DBX_REGISTER_NUMBER(n) (TARGET_64BIT ? dbx64_register_map[n] \ + : (write_symbols == DWARF2_DEBUG \ || write_symbols == DWARF_DEBUG) \ - ? DWARF_DBX_REGISTER_NUMBER(n) \ - : STABS_DBX_REGISTER_NUMBER(n)) + ? svr4_dbx_register_map[(n)] \ + : dbx_register_map[(n)]) /* tag end of file in elf mode */ #undef DBX_OUTPUT_MAIN_SOURCE_FILE_END #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME) \ do { \ if (TARGET_ELF) { \ - fprintf ((FILE), "\t.text\n\t.stabs \"\",%d,0,0,.Letext\n.Letext:\n", \ + fprintf ((FILE), "\t.text\n\t.stabs \"\",%d,0,0,%LLetext\n%LLetext:\n", \ N_SO); \ } \ } while (0) |