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authorobrien <obrien@FreeBSD.org>2002-04-30 17:15:01 +0000
committerobrien <obrien@FreeBSD.org>2002-04-30 17:15:01 +0000
commit9a9ba1484fe61e96f047ac927b52c46679b80603 (patch)
treef0c2a71cd8d2de9d06c534ef7eb92519009a3c83 /contrib/gcc/config
parent81eeb21ad8cc3f6753bf74d1b6fbf62c45ec37ec (diff)
downloadFreeBSD-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.
Diffstat (limited to 'contrib/gcc/config')
-rw-r--r--contrib/gcc/config/i386/freebsd.h456
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)
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