mirror of
https://github.com/freebsd/freebsd-src
synced 2024-09-20 16:54:02 +00:00
Push as much as was easy of the mixed ELF & a.out support for the i386
into the i386 MD FreeBSD header. Also comment tweaking, continuation line style changes, and other minor changes to make this closer to the latest FSF/GNU 3.0 sources (to reduce my headache when 3.0 is imported).
This commit is contained in:
David E. O'Brien
parent
e9031bfe8d
commit
c04329d184
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=73304
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@ -23,7 +23,8 @@ Boston, MA 02111-1307, USA. */
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their commonalities.
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Adapted from /usr/src/contrib/gcc/config/i386/freebsd.h,
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/usr/src/contrib/gcc/config/svr4.h &
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egcs/gcc/config/i386/freebsd-elf.h version by David O'Brien */
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egcs/gcc/config/i386/freebsd-elf.h by
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David O'Brien <obrien@FreeBSD.org>. */
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/* $FreeBSD$ */
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@ -35,14 +36,14 @@ Boston, MA 02111-1307, USA. */
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-z* options (for the linker) (coming from SVR4).
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We also have -R (alias --rpath), no -z, --soname (-h), --assert etc. */
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#define FBSD_SWITCH_TAKES_ARG(CHAR) \
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(DEFAULT_SWITCH_TAKES_ARG (CHAR) \
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|| (CHAR) == 'h' \
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|| (CHAR) == 'z' /* ignored by ld */ \
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|| (CHAR) == 'R')
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#define FBSD_SWITCH_TAKES_ARG(CHAR) \
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(DEFAULT_SWITCH_TAKES_ARG (CHAR) \
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|| (CHAR) == 'h' \
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|| (CHAR) == 'z' /* ignored by ld */ \
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|| (CHAR) == 'R')
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#undef SWITCH_TAKES_ARG
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#define SWITCH_TAKES_ARG(CHAR) (FBSD_SWITCH_TAKES_ARG(CHAR))
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#define SWITCH_TAKES_ARG(CHAR) (FBSD_SWITCH_TAKES_ARG(CHAR))
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/* This defines which multi-letter switches take arguments. */
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@ -53,11 +54,13 @@ Boston, MA 02111-1307, USA. */
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|| !strcmp ((STR), "assert") || !strcmp ((STR), "dynamic-linker"))
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#undef WORD_SWITCH_TAKES_ARG
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#define WORD_SWITCH_TAKES_ARG(STR) (FBSD_WORD_SWITCH_TAKES_ARG(STR))
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#define WORD_SWITCH_TAKES_ARG(STR) (FBSD_WORD_SWITCH_TAKES_ARG(STR))
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/* Place spaces around this string. We depend on string splicing to produce
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the final CPP_PREDEFINES value. */
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#define FBSD_CPP_PREDEFINES " -Dunix -D__FreeBSD__=5 -D__FreeBSD_cc_version=500002 -Asystem(unix) -Asystem(FreeBSD) "
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#define FBSD_CPP_PREDEFINES \
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" -D__FreeBSD__=5 -D__FreeBSD_cc_version=500002 -Dunix -Asystem(unix) -Asystem(FreeBSD) "
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#define FBSD_CPP_SPEC " \
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%(cpp_cpu) \
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@ -71,9 +74,9 @@ Boston, MA 02111-1307, USA. */
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#define CPP_SPEC FBSD_CPP_SPEC
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/* Provide a LIB_SPEC appropriate for FreeBSD. Just select the appropriate
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libc, depending on whether we're doing profiling. Add the appropriate
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libc_r if supporting threads.
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(like the default, except no -lg, and no -p). */
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libc, depending on whether we're doing profiling or need threads support.
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(simular to the default, except no -lg, and no -p). */
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#undef LIB_SPEC
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#define LIB_SPEC " \
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%{!shared: \
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@ -133,10 +136,8 @@ Boston, MA 02111-1307, USA. */
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#undef HANDLE_SYSV_PRAGMA
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#define HANDLE_SYSV_PRAGMA
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/* FreeBSD ELF using our home-grown crtbegin.o/crtend.o does not support the
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DWARF2 unwinding mechanisms. Once `make world' bootstraping problems with
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the EGCS crtstuff.c is overcome, we will switch to the non-sjlj-exceptions
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type exception machanism. */
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/* FreeBSD ELF uses across the board will now use DWARF2 unwinding as the IA-64
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psABI requires it. */
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#define DWARF2_UNWIND_INFO 0
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/* Do not use ``thunks'' to implement C++ vtables. This method still has
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@ -152,9 +153,8 @@ Boston, MA 02111-1307, USA. */
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#define ASM_COMMENT_START "#"
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/* Attach a special .ident directive to the end of the file to identify
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the version of GCC which compiled this code. The format of the
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.ident string is patterned after the ones produced by native SVR4
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C compilers. */
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the version of GCC which compiled this code. The format of the .ident
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string is patterned after the ones produced by native SVR4 C compilers. */
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#undef IDENT_ASM_OP
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#define IDENT_ASM_OP "\t.ident\t"
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@ -162,7 +162,7 @@ Boston, MA 02111-1307, USA. */
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/* Output #ident as a .ident. */
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#undef ASM_OUTPUT_IDENT
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#define ASM_OUTPUT_IDENT(FILE, NAME) \
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#define ASM_OUTPUT_IDENT(FILE, NAME) \
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fprintf ((FILE), "%s\"%s\"\n", IDENT_ASM_OP, (NAME));
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/* Identify the front-end which produced this file. To keep symbol
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@ -200,21 +200,6 @@ Boston, MA 02111-1307, USA. */
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#undef SKIP_ASM_OP
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#define SKIP_ASM_OP "\t.zero\t"
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/* How to output some space. The rules are different depending on the
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object format. */
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#undef ASM_OUTPUT_SKIP
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#define ASM_OUTPUT_SKIP(FILE, SIZE) \
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do { \
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if (TARGET_ELF) \
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{ \
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fprintf ((FILE), "%s%u\n", SKIP_ASM_OP, (SIZE)); \
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} \
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else \
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{ \
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fprintf ((FILE), "\t.space\t%u\n", (SIZE)); \
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} \
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} while (0)
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/* A table of bytes codes used by the ASM_OUTPUT_ASCII and
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ASM_OUTPUT_LIMITED_STRING macros. Each byte in the table
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corresponds to a particular byte value [0..255]. For any
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@ -276,28 +261,6 @@ Boston, MA 02111-1307, USA. */
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#undef COMMON_ASM_OP
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#define COMMON_ASM_OP "\t.comm\t"
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#undef ASM_OUTPUT_ALIGNED_COMMON
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#define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN) \
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do { \
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if (TARGET_ELF) \
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{ \
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fprintf ((FILE), "%s", COMMON_ASM_OP); \
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assemble_name ((FILE), (NAME)); \
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fprintf ((FILE), ",%u,%u\n", (SIZE), (ALIGN) / BITS_PER_UNIT); \
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} \
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else \
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{ \
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int rounded = (SIZE); \
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if (rounded == 0) rounded = 1; \
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rounded += (BIGGEST_ALIGNMENT / BITS_PER_UNIT) - 1; \
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rounded = (rounded / (BIGGEST_ALIGNMENT / BITS_PER_UNIT) \
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* (BIGGEST_ALIGNMENT / BITS_PER_UNIT)); \
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fprintf ((FILE), "%s ", COMMON_ASM_OP); \
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assemble_name ((FILE), (NAME)); \
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fprintf ((FILE), ",%u\n", (rounded)); \
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} \
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} while (0)
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/* This says how to output assembler code to declare an
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uninitialized internal linkage data object. Under SVR4/ELF,
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the linker seems to want the alignment of data objects
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@ -306,34 +269,6 @@ Boston, MA 02111-1307, USA. */
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#undef LOCAL_ASM_OP
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#define LOCAL_ASM_OP "\t.local\t"
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/* This says how to output assembler code to declare an
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uninitialized internal linkage data object. Under SVR4,
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the linker seems to want the alignment of data objects
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to depend on their types. We do exactly that here. */
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#undef ASM_OUTPUT_ALIGNED_LOCAL
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#define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \
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do { \
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if (TARGET_ELF) \
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{ \
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fprintf ((FILE), "%s", LOCAL_ASM_OP); \
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assemble_name ((FILE), (NAME)); \
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fprintf ((FILE), "\n"); \
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ASM_OUTPUT_ALIGNED_COMMON ((FILE), (NAME), (SIZE), (ALIGN)); \
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} \
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else \
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{ \
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int rounded = (SIZE); \
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if (rounded == 0) rounded = 1; \
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rounded += (BIGGEST_ALIGNMENT / BITS_PER_UNIT) - 1; \
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rounded = (rounded / (BIGGEST_ALIGNMENT / BITS_PER_UNIT) \
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* (BIGGEST_ALIGNMENT / BITS_PER_UNIT)); \
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fputs ("\t.lcomm\t", (FILE)); \
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assemble_name ((FILE), (NAME)); \
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fprintf ((FILE), ",%u\n", (rounded)); \
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} \
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} while (0)
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#undef ASM_OUTPUT_BEFORE_CASE_LABEL
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#define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE, PREFIX, NUM, TABLE) \
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ASM_OUTPUT_ALIGN ((FILE), 2);
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@ -461,48 +396,6 @@ extern void text_section ();
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} \
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}
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/* A C statement (sans semicolon) to output an element in the table of
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global constructors. */
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#undef ASM_OUTPUT_CONSTRUCTOR
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#define ASM_OUTPUT_CONSTRUCTOR(FILE, NAME) \
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do { \
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if (TARGET_ELF) \
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{ \
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ctors_section (); \
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fprintf ((FILE), "%s ", INT_ASM_OP); \
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assemble_name ((FILE), (NAME)); \
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fprintf ((FILE), "\n"); \
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} \
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else \
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{ \
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fprintf (asm_out_file, "%s \"%s__CTOR_LIST__\",22,0,0,", \
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ASM_STABS_OP, (TARGET_UNDERSCORES) ? "_" : ""); \
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assemble_name (asm_out_file, name); \
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fputc ('\n', asm_out_file); \
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} \
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} while (0)
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/* A C statement (sans semicolon) to output an element in the table of
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global destructors. */
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#undef ASM_OUTPUT_DESTRUCTOR
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#define ASM_OUTPUT_DESTRUCTOR(FILE, NAME) \
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do { \
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if (TARGET_ELF) \
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{ \
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dtors_section (); \
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fprintf ((FILE), "%s ", INT_ASM_OP); \
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assemble_name ((FILE), (NAME)); \
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fprintf ((FILE), "\n"); \
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} \
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else \
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{ \
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fprintf (asm_out_file, "%s \"%s__DTOR_LIST__\",22,0,0,", \
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ASM_STABS_OP, (TARGET_UNDERSCORES) ? "_" : ""); \
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assemble_name (asm_out_file, name); \
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fputc ('\n', asm_out_file); \
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} \
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} while (0)
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/* A C statement or statements to switch to the appropriate
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section for output of RTX in mode MODE. RTX is some kind
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of constant in RTL. The argument MODE is redundant except
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@ -610,7 +503,7 @@ extern void text_section ();
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#undef DBX_DEBUGGING_INFO
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#define DBX_DEBUGGING_INFO
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/* Use stabs instead of DWARF debug format. */
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/* This is BSD, so use stabs instead of DWARF debug format. */
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#undef PREFERRED_DEBUGGING_TYPE
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#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
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@ -619,5 +512,3 @@ extern void text_section ();
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architecture's native OS's tools that don't apply to us. */
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#undef ASM_IDENTIFY_GCC
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#undef ASM_IDENTIFY_LANGUAGE
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#include "dbxelf.h"
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