Merge the stock gcc-3.1_snap file onto HEAD.
This commit is contained in:
David E. O'Brien
parent
a1640fbb8a
commit
2b6f3a3db7
File diff suppressed because it is too large
Load Diff
@ -1,5 +1,6 @@
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/* Definitions of target machine for GNU compiler, for DEC Alpha w/ELF.
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Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
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Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002
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Free Software Foundation, Inc.
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Contributed by Richard Henderson (rth@tamu.edu).
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This file is part of GNU CC.
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@ -25,21 +26,24 @@ Boston, MA 02111-1307, USA. */
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#undef EXTENDED_COFF
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#define OBJECT_FORMAT_ELF
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/* ??? Move all SDB stuff from alpha.h to osf.h. */
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#undef SDB_DEBUGGING_INFO
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#define DBX_DEBUGGING_INFO
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#define DWARF2_DEBUGGING_INFO
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#undef PREFERRED_DEBUGGING_TYPE
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#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
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#undef PREFERRED_DEBUGGING_TYPE
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#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
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#undef ASM_FINAL_SPEC
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#undef CC1_SPEC
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#undef CC1_SPEC
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#define CC1_SPEC "%{G*}"
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#undef ASM_SPEC
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#define ASM_SPEC "%{G*} %{relax:-relax} %{gdwarf*:-no-mdebug}"
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#undef ASM_SPEC
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#define ASM_SPEC "%{G*} %{relax:-relax} %{!gstabs*:-no-mdebug}%{gstabs*:-mdebug}"
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#undef LINK_SPEC
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#undef LINK_SPEC
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#define LINK_SPEC "-m elf64alpha %{G*} %{relax:-relax} \
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%{O*:-O3} %{!O*:-O1} \
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%{shared:-shared} \
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@ -50,48 +54,28 @@ Boston, MA 02111-1307, USA. */
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%{static:-static}}"
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/* Output at beginning of assembler file. */
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#undef ASM_FILE_START
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#undef ASM_FILE_START
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#define ASM_FILE_START(FILE) \
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do { \
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if (write_symbols != DWARF2_DEBUG) \
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if (write_symbols == DBX_DEBUG) \
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{ \
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alpha_write_verstamp (FILE); \
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output_file_directive (FILE, main_input_filename); \
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} \
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fprintf (FILE, "\t.set noat\n"); \
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fprintf (FILE, "\t.set noreorder\n"); \
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if (TARGET_EXPLICIT_RELOCS) \
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fprintf (FILE, "\t.set nomacro\n"); \
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if (TARGET_BWX | TARGET_MAX | TARGET_FIX | TARGET_CIX) \
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{ \
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fprintf (FILE, "\t.arch %s\n", \
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(alpha_cpu == PROCESSOR_EV6 ? "ev6" \
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(TARGET_CPU_EV6 ? "ev6" \
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: TARGET_MAX ? "pca56" : "ev56")); \
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} \
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} while (0)
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extern void output_file_directive ();
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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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#undef IDENT_ASM_OP
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#define IDENT_ASM_OP ".ident"
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#ifdef IDENTIFY_WITH_IDENT
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#define ASM_IDENTIFY_GCC(FILE) /* nothing */
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#define ASM_IDENTIFY_LANGUAGE(FILE) \
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fprintf(FILE, "\t%s \"GCC (%s) %s\"\n", IDENT_ASM_OP, \
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lang_identify(), version_string)
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#else
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#undef ASM_FILE_END
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#define ASM_FILE_END(FILE) \
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do { \
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if (!flag_no_ident) \
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fprintf ((FILE), "\t%s\t\"GCC: (GNU) %s\"\n", \
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IDENT_ASM_OP, version_string); \
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} while (0)
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#endif
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#define IDENT_ASM_OP "\t.ident\t"
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/* Allow #sccs in preprocessor. */
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#define SCCS_DIRECTIVE
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@ -99,17 +83,17 @@ do { \
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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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fprintf (FILE, "\t%s\t\"%s\"\n", IDENT_ASM_OP, NAME);
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fprintf (FILE, "%s\"%s\"\n", IDENT_ASM_OP, NAME);
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/* This is how to allocate empty space in some section. The .zero
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pseudo-op is used for this on most svr4 assemblers. */
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#undef SKIP_ASM_OP
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#define SKIP_ASM_OP ".zero"
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#define SKIP_ASM_OP "\t.zero\t"
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#undef ASM_OUTPUT_SKIP
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#define ASM_OUTPUT_SKIP(FILE,SIZE) \
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fprintf (FILE, "\t%s\t%u\n", SKIP_ASM_OP, (SIZE))
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#undef ASM_OUTPUT_SKIP
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#define ASM_OUTPUT_SKIP(FILE, SIZE) \
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fprintf (FILE, "%s%u\n", SKIP_ASM_OP, (SIZE))
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/* Output the label which precedes a jumptable. Note that for all svr4
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systems where we actually generate jumptables (which is to say every
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@ -120,15 +104,15 @@ do { \
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perly re-aligned prior to the actual beginning of the jump table. */
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#undef ALIGN_ASM_OP
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#define ALIGN_ASM_OP ".align"
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#define ALIGN_ASM_OP "\t.align\t"
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#ifndef ASM_OUTPUT_BEFORE_CASE_LABEL
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#define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE,PREFIX,NUM,TABLE) \
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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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#endif
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#undef ASM_OUTPUT_CASE_LABEL
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#define ASM_OUTPUT_CASE_LABEL(FILE,PREFIX,NUM,JUMPTABLE) \
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#undef ASM_OUTPUT_CASE_LABEL
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#define ASM_OUTPUT_CASE_LABEL(FILE, PREFIX, NUM, JUMPTABLE) \
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do { \
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ASM_OUTPUT_BEFORE_CASE_LABEL (FILE, PREFIX, NUM, JUMPTABLE) \
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ASM_OUTPUT_INTERNAL_LABEL (FILE, PREFIX, NUM); \
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@ -148,12 +132,12 @@ do { \
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to depend on their types. We do exactly that here. */
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#undef COMMON_ASM_OP
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#define COMMON_ASM_OP ".comm"
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#define COMMON_ASM_OP "\t.comm\t"
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#undef ASM_OUTPUT_ALIGNED_COMMON
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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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fprintf ((FILE), "\t%s\t", COMMON_ASM_OP); \
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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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} while (0)
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@ -163,21 +147,21 @@ do { \
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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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#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 ((SIZE) <= g_switch_value) \
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sbss_section(); \
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else \
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bss_section(); \
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fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
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fprintf (FILE, "%s", TYPE_ASM_OP); \
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assemble_name (FILE, NAME); \
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putc (',', FILE); \
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fprintf (FILE, TYPE_OPERAND_FMT, "object"); \
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putc ('\n', FILE); \
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if (!flag_inhibit_size_directive) \
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{ \
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fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
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fprintf (FILE, "%s", SIZE_ASM_OP); \
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assemble_name (FILE, NAME); \
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fprintf (FILE, ",%d\n", (SIZE)); \
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} \
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@ -186,11 +170,6 @@ do { \
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ASM_OUTPUT_SKIP((FILE), (SIZE)); \
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} while (0)
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/* This is the pseudo-op used to generate a 64-bit word of data with a
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specific value in some section. */
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#define INT_ASM_OP ".quad"
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/* Biggest alignment supported by the object file format of this
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machine. Use this macro to limit the alignment which can be
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specified using the `__attribute__ ((aligned (N)))' construct. If
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@ -200,6 +179,7 @@ do { \
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we could only potentially get to 2^60 on suitible hosts. Due to other
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considerations in varasm, we must restrict this to what fits in an int. */
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#undef MAX_OFILE_ALIGNMENT
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#define MAX_OFILE_ALIGNMENT \
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(1 << (HOST_BITS_PER_INT < 64 ? HOST_BITS_PER_INT - 2 : 62))
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@ -207,8 +187,8 @@ do { \
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values from a double-quoted string WITHOUT HAVING A TERMINATING NUL
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AUTOMATICALLY APPENDED. This is the same for most svr4 assemblers. */
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#undef ASCII_DATA_ASM_OP
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#define ASCII_DATA_ASM_OP ".ascii"
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#undef ASCII_DATA_ASM_OP
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#define ASCII_DATA_ASM_OP "\t.ascii\t"
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/* Support const sections and the ctors and dtors sections for g++.
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Note that there appears to be two different ways to support const
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@ -218,36 +198,18 @@ do { \
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EXTRA_SECTIONS, EXTRA_SECTION_FUNCTIONS, SELECT_SECTION, and
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SELECT_RTX_SECTION. We do both here just to be on the safe side. */
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#undef USE_CONST_SECTION
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#undef USE_CONST_SECTION
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#define USE_CONST_SECTION 1
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#undef CONST_SECTION_ASM_OP
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#define CONST_SECTION_ASM_OP ".section\t.rodata"
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#define CONST_SECTION_ASM_OP "\t.section\t.rodata"
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/* Define the pseudo-ops used to switch to the .ctors and .dtors sections.
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Note that we want to give these sections the SHF_WRITE attribute
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because these sections will actually contain data (i.e. tables of
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addresses of functions in the current root executable or shared library
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file) and, in the case of a shared library, the relocatable addresses
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will have to be properly resolved/relocated (and then written into) by
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the dynamic linker when it actually attaches the given shared library
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to the executing process. (Note that on SVR4, you may wish to use the
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`-z text' option to the ELF linker, when building a shared library, as
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an additional check that you are doing everything right. But if you do
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use the `-z text' option when building a shared library, you will get
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errors unless the .ctors and .dtors sections are marked as writable
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via the SHF_WRITE attribute.) */
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#undef CTORS_SECTION_ASM_OP
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#define CTORS_SECTION_ASM_OP ".section\t.ctors,\"aw\""
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#undef DTORS_SECTION_ASM_OP
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#define DTORS_SECTION_ASM_OP ".section\t.dtors,\"aw\""
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/* Handle the small data sections. */
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#define BSS_SECTION_ASM_OP ".section\t.bss"
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#define SBSS_SECTION_ASM_OP ".section\t.sbss,\"aw\""
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#define SDATA_SECTION_ASM_OP ".section\t.sdata,\"aw\""
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#undef BSS_SECTION_ASM_OP
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#define BSS_SECTION_ASM_OP "\t.section\t.bss"
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#undef SBSS_SECTION_ASM_OP
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#define SBSS_SECTION_ASM_OP "\t.section\t.sbss,\"aw\""
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#undef SDATA_SECTION_ASM_OP
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#define SDATA_SECTION_ASM_OP "\t.section\t.sdata,\"aw\""
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/* On svr4, we *do* have support for the .init and .fini sections, and we
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can put stuff in there to be executed before and after `main'. We let
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@ -256,126 +218,225 @@ do { \
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sections. This is the same for all known svr4 assemblers. */
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#undef INIT_SECTION_ASM_OP
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#define INIT_SECTION_ASM_OP ".section\t.init"
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#define INIT_SECTION_ASM_OP "\t.section\t.init"
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#undef FINI_SECTION_ASM_OP
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#define FINI_SECTION_ASM_OP ".section\t.fini"
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#define FINI_SECTION_ASM_OP "\t.section\t.fini"
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#ifdef HAVE_GAS_SUBSECTION_ORDERING
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#define ASM_SECTION_START_OP "\t.subsection\t-1"
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/* Output assembly directive to move to the beginning of current section. */
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#define ASM_OUTPUT_SECTION_START(FILE) \
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fprintf ((FILE), "%s\n", ASM_SECTION_START_OP)
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#endif
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/* A default list of other sections which we might be "in" at any given
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time. For targets that use additional sections (e.g. .tdesc) you
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should override this definition in the target-specific file which
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includes this file. */
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#undef EXTRA_SECTIONS
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#define EXTRA_SECTIONS in_const, in_ctors, in_dtors, in_sbss, in_sdata
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#undef EXTRA_SECTIONS
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#define EXTRA_SECTIONS in_const, in_sbss, in_sdata
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/* A default list of extra section function definitions. For targets
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that use additional sections (e.g. .tdesc) you should override this
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definition in the target-specific file which includes this file. */
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#undef EXTRA_SECTION_FUNCTIONS
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#undef EXTRA_SECTION_FUNCTIONS
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#define EXTRA_SECTION_FUNCTIONS \
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CONST_SECTION_FUNCTION \
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SECTION_FUNCTION_TEMPLATE(ctors_section, in_ctors, CTORS_SECTION_ASM_OP) \
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SECTION_FUNCTION_TEMPLATE(dtors_section, in_dtors, DTORS_SECTION_ASM_OP) \
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SECTION_FUNCTION_TEMPLATE(sbss_section, in_sbss, SBSS_SECTION_ASM_OP) \
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SECTION_FUNCTION_TEMPLATE(sdata_section, in_sdata, SDATA_SECTION_ASM_OP)
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#undef READONLY_DATA_SECTION
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extern void sbss_section PARAMS ((void));
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extern void sdata_section PARAMS ((void));
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#undef READONLY_DATA_SECTION
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#define READONLY_DATA_SECTION() const_section ()
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extern void text_section ();
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#define CONST_SECTION_FUNCTION \
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void \
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const_section () \
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{ \
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if (!USE_CONST_SECTION) \
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text_section(); \
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else if (in_section != in_const) \
|
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{ \
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fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP); \
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in_section = in_const; \
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} \
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#undef CONST_SECTION_FUNCTION
|
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#define CONST_SECTION_FUNCTION \
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void \
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const_section () \
|
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{ \
|
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if (!USE_CONST_SECTION) \
|
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text_section(); \
|
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else if (in_section != in_const) \
|
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{ \
|
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fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP); \
|
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in_section = in_const; \
|
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} \
|
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}
|
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|
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#define SECTION_FUNCTION_TEMPLATE(FN, ENUM, OP) \
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void FN () \
|
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{ \
|
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if (in_section != ENUM) \
|
||||
{ \
|
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fprintf (asm_out_file, "%s\n", OP); \
|
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in_section = ENUM; \
|
||||
} \
|
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#undef SECTION_FUNCTION_TEMPLATE
|
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#define SECTION_FUNCTION_TEMPLATE(FN, ENUM, OP) \
|
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void FN () \
|
||||
{ \
|
||||
if (in_section != ENUM) \
|
||||
{ \
|
||||
fprintf (asm_out_file, "%s\n", OP); \
|
||||
in_section = ENUM; \
|
||||
} \
|
||||
}
|
||||
|
||||
|
||||
/* Switch into a generic section.
|
||||
This is currently only used to support section attributes.
|
||||
|
||||
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. */
|
||||
#define ASM_OUTPUT_SECTION_NAME(FILE, DECL, NAME, RELOC) \
|
||||
fprintf (FILE, ".section\t%s,\"%s\",@progbits\n", NAME, \
|
||||
(DECL) && TREE_CODE (DECL) == FUNCTION_DECL ? "ax" : \
|
||||
(DECL) && DECL_READONLY_SECTION (DECL, RELOC) ? "a" : "aw")
|
||||
|
||||
|
||||
/* 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 { \
|
||||
ctors_section (); \
|
||||
fprintf (FILE, "\t%s\t ", INT_ASM_OP); \
|
||||
assemble_name (FILE, NAME); \
|
||||
fprintf (FILE, "\n"); \
|
||||
} 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 { \
|
||||
dtors_section (); \
|
||||
fprintf (FILE, "\t%s\t ", INT_ASM_OP); \
|
||||
assemble_name (FILE, NAME); \
|
||||
fprintf (FILE, "\n"); \
|
||||
} while (0)
|
||||
/* Switch into a generic section. */
|
||||
#define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section
|
||||
|
||||
/* 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. */
|
||||
the initial value of DECL requires link-time relocations.
|
||||
|
||||
#define SELECT_SECTION(DECL,RELOC) \
|
||||
{ \
|
||||
if (TREE_CODE (DECL) == STRING_CST) \
|
||||
Set SECNUM to:
|
||||
0 .text
|
||||
1 .rodata
|
||||
2 .data
|
||||
3 .sdata
|
||||
4 .bss
|
||||
5 .sbss
|
||||
*/
|
||||
|
||||
#define DO_SELECT_SECTION(SECNUM, DECL, RELOC) \
|
||||
do \
|
||||
{ \
|
||||
HOST_WIDE_INT size; \
|
||||
SECNUM = 1; \
|
||||
if (TREE_CODE (DECL) == FUNCTION_DECL) \
|
||||
{ \
|
||||
SECNUM = 0; \
|
||||
break; \
|
||||
} \
|
||||
else if (TREE_CODE (DECL) == STRING_CST) \
|
||||
{ \
|
||||
if (flag_writable_strings) \
|
||||
SECNUM = 2; \
|
||||
else \
|
||||
SECNUM = 0x101; \
|
||||
break; \
|
||||
} \
|
||||
else if (TREE_CODE (DECL) == VAR_DECL) \
|
||||
{ \
|
||||
if (DECL_INITIAL (DECL) == NULL \
|
||||
|| DECL_INITIAL (DECL) == error_mark_node) \
|
||||
SECNUM = 4; \
|
||||
else if ((flag_pic && RELOC) \
|
||||
|| ! TREE_READONLY (DECL) \
|
||||
|| TREE_SIDE_EFFECTS (DECL) \
|
||||
|| ! TREE_CONSTANT (DECL_INITIAL (DECL))) \
|
||||
SECNUM = 2; \
|
||||
else if (flag_merge_constants >= 2) \
|
||||
{ \
|
||||
/* C and C++ don't allow different variables to \
|
||||
share the same location. -fmerge-all-constants\
|
||||
allows even that (at the expense of not \
|
||||
conforming). */ \
|
||||
if (TREE_CODE (DECL_INITIAL (DECL)) == STRING_CST)\
|
||||
SECNUM = 0x201; \
|
||||
else \
|
||||
SECNUM = 0x301; \
|
||||
} \
|
||||
} \
|
||||
else if (TREE_CODE (DECL) == CONSTRUCTOR) \
|
||||
{ \
|
||||
if ((flag_pic && RELOC) \
|
||||
|| TREE_SIDE_EFFECTS (DECL) \
|
||||
|| ! TREE_CONSTANT (DECL)) \
|
||||
SECNUM = 2; \
|
||||
} \
|
||||
\
|
||||
/* Select small data sections based on size. */ \
|
||||
size = int_size_in_bytes (TREE_TYPE (DECL)); \
|
||||
if (size >= 0 && size <= g_switch_value) \
|
||||
{ \
|
||||
if ((SECNUM & 0xff) >= 2) \
|
||||
SECNUM += 1; \
|
||||
/* Move readonly data to .sdata only if -msmall-data. */ \
|
||||
/* ??? Consider .sdata.{lit4,lit8} as \
|
||||
SHF_MERGE|SHF_ALPHA_GPREL. */ \
|
||||
else if (TARGET_SMALL_DATA) \
|
||||
SECNUM = 3; \
|
||||
} \
|
||||
} \
|
||||
while (0)
|
||||
|
||||
#undef SELECT_SECTION
|
||||
#define SELECT_SECTION(DECL, RELOC, ALIGN) \
|
||||
do \
|
||||
{ \
|
||||
typedef void (*sec_fn) PARAMS ((void)); \
|
||||
static sec_fn const sec_functions[6] = \
|
||||
{ \
|
||||
text_section, \
|
||||
const_section, \
|
||||
data_section, \
|
||||
sdata_section, \
|
||||
bss_section, \
|
||||
sbss_section \
|
||||
}; \
|
||||
\
|
||||
int sec; \
|
||||
\
|
||||
DO_SELECT_SECTION (sec, DECL, RELOC); \
|
||||
\
|
||||
switch (sec) \
|
||||
{ \
|
||||
case 0x101: \
|
||||
mergeable_string_section (DECL, ALIGN, 0); \
|
||||
break; \
|
||||
case 0x201: \
|
||||
mergeable_string_section (DECL_INITIAL (DECL),\
|
||||
ALIGN, 0); \
|
||||
break; \
|
||||
case 0x301: \
|
||||
mergeable_constant_section (DECL_MODE (DECL), \
|
||||
ALIGN, 0); \
|
||||
break; \
|
||||
default: \
|
||||
(*sec_functions[sec]) (); \
|
||||
break; \
|
||||
} \
|
||||
} \
|
||||
while (0)
|
||||
|
||||
#define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
|
||||
|
||||
#undef UNIQUE_SECTION
|
||||
#define UNIQUE_SECTION(DECL, RELOC) \
|
||||
do \
|
||||
{ \
|
||||
if (! flag_writable_strings) \
|
||||
const_section (); \
|
||||
else \
|
||||
data_section (); \
|
||||
static const char * const prefixes[6][2] = \
|
||||
{ \
|
||||
{ ".text.", ".gnu.linkonce.t." }, \
|
||||
{ ".rodata.", ".gnu.linkonce.r." }, \
|
||||
{ ".data.", ".gnu.linkonce.d." }, \
|
||||
{ ".sdata.", ".gnu.linkonce.s." }, \
|
||||
{ ".bss.", ".gnu.linkonce.b." }, \
|
||||
{ ".sbss.", ".gnu.linkonce.sb." } \
|
||||
}; \
|
||||
\
|
||||
int nlen, plen, sec; \
|
||||
const char *name, *prefix; \
|
||||
char *string; \
|
||||
\
|
||||
DO_SELECT_SECTION (sec, DECL, RELOC); \
|
||||
\
|
||||
name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL)); \
|
||||
STRIP_NAME_ENCODING (name, name); \
|
||||
nlen = strlen (name); \
|
||||
\
|
||||
prefix = prefixes[sec & 0xff][DECL_ONE_ONLY(DECL)]; \
|
||||
plen = strlen (prefix); \
|
||||
\
|
||||
string = alloca (nlen + plen + 1); \
|
||||
\
|
||||
memcpy (string, prefix, plen); \
|
||||
memcpy (string + plen, name, nlen + 1); \
|
||||
\
|
||||
DECL_SECTION_NAME (DECL) = build_string (nlen + plen, string); \
|
||||
} \
|
||||
else if (TREE_CODE (DECL) == VAR_DECL) \
|
||||
{ \
|
||||
if ((flag_pic && RELOC) \
|
||||
|| !TREE_READONLY (DECL) || TREE_SIDE_EFFECTS (DECL) \
|
||||
|| !DECL_INITIAL (DECL) \
|
||||
|| (DECL_INITIAL (DECL) != error_mark_node \
|
||||
&& !TREE_CONSTANT (DECL_INITIAL (DECL)))) \
|
||||
{ \
|
||||
int size = int_size_in_bytes (TREE_TYPE (DECL)); \
|
||||
if (size >= 0 && size <= g_switch_value) \
|
||||
sdata_section (); \
|
||||
else \
|
||||
data_section (); \
|
||||
} \
|
||||
else \
|
||||
const_section (); \
|
||||
} \
|
||||
else \
|
||||
const_section (); \
|
||||
}
|
||||
while (0)
|
||||
|
||||
/* A C statement or statements to switch to the appropriate
|
||||
section for output of RTX in mode MODE. RTX is some kind
|
||||
@ -383,8 +444,15 @@ void FN () \
|
||||
in the case of a `const_int' rtx. Currently, these always
|
||||
go into the const section. */
|
||||
|
||||
#undef SELECT_RTX_SECTION
|
||||
#define SELECT_RTX_SECTION(MODE,RTX) const_section()
|
||||
#undef SELECT_RTX_SECTION
|
||||
#define SELECT_RTX_SECTION(MODE, RTX, ALIGN) \
|
||||
do { \
|
||||
if (TARGET_SMALL_DATA && GET_MODE_SIZE (MODE) <= g_switch_value) \
|
||||
/* ??? Consider .sdata.{lit4,lit8} as SHF_MERGE|SHF_ALPHA_GPREL. */ \
|
||||
sdata_section (); \
|
||||
else \
|
||||
mergeable_constant_section((MODE), (ALIGN), 0); \
|
||||
} while (0)
|
||||
|
||||
/* Define the strings used for the special svr4 .type and .size directives.
|
||||
These strings generally do not vary from one system running svr4 to
|
||||
@ -393,20 +461,21 @@ void FN () \
|
||||
file which includes this one. */
|
||||
|
||||
#undef TYPE_ASM_OP
|
||||
#define TYPE_ASM_OP ".type"
|
||||
#define TYPE_ASM_OP "\t.type\t"
|
||||
#undef SIZE_ASM_OP
|
||||
#define SIZE_ASM_OP ".size"
|
||||
#define SIZE_ASM_OP "\t.size\t"
|
||||
|
||||
/* This is how we tell the assembler that a symbol is weak. */
|
||||
|
||||
#undef ASM_WEAKEN_LABEL
|
||||
#define ASM_WEAKEN_LABEL(FILE,NAME) \
|
||||
#define ASM_WEAKEN_LABEL(FILE, NAME) \
|
||||
do { fputs ("\t.weak\t", FILE); assemble_name (FILE, NAME); \
|
||||
fputc ('\n', FILE); } while (0)
|
||||
|
||||
/* This is how we tell the assembler that two symbols have the same value. */
|
||||
|
||||
#define ASM_OUTPUT_DEF(FILE,NAME1,NAME2) \
|
||||
#undef ASM_OUTPUT_DEF
|
||||
#define ASM_OUTPUT_DEF(FILE, NAME1, NAME2) \
|
||||
do { assemble_name(FILE, NAME1); \
|
||||
fputs(" = ", FILE); \
|
||||
assemble_name(FILE, NAME2); \
|
||||
@ -418,6 +487,7 @@ void FN () \
|
||||
is just a default. You may need to override it in your machine-
|
||||
specific tm.h file (depending upon the particulars of your assembler). */
|
||||
|
||||
#undef TYPE_OPERAND_FMT
|
||||
#define TYPE_OPERAND_FMT "@%s"
|
||||
|
||||
/* Write the extra assembler code needed to declare a function's result.
|
||||
@ -436,22 +506,27 @@ void FN () \
|
||||
/* Write the extra assembler code needed to declare an object properly. */
|
||||
|
||||
#undef ASM_DECLARE_OBJECT_NAME
|
||||
#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
|
||||
do { \
|
||||
fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
|
||||
assemble_name (FILE, NAME); \
|
||||
putc (',', FILE); \
|
||||
fprintf (FILE, TYPE_OPERAND_FMT, "object"); \
|
||||
putc ('\n', FILE); \
|
||||
size_directive_output = 0; \
|
||||
if (!flag_inhibit_size_directive && DECL_SIZE (DECL)) \
|
||||
{ \
|
||||
size_directive_output = 1; \
|
||||
fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
|
||||
assemble_name (FILE, NAME); \
|
||||
fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \
|
||||
} \
|
||||
ASM_OUTPUT_LABEL(FILE, NAME); \
|
||||
#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
|
||||
do { \
|
||||
HOST_WIDE_INT size; \
|
||||
fprintf (FILE, "%s", TYPE_ASM_OP); \
|
||||
assemble_name (FILE, NAME); \
|
||||
putc (',', FILE); \
|
||||
fprintf (FILE, TYPE_OPERAND_FMT, "object"); \
|
||||
putc ('\n', FILE); \
|
||||
size_directive_output = 0; \
|
||||
if (!flag_inhibit_size_directive \
|
||||
&& DECL_SIZE (DECL) \
|
||||
&& (size = int_size_in_bytes (TREE_TYPE (DECL))) > 0) \
|
||||
{ \
|
||||
size_directive_output = 1; \
|
||||
fprintf (FILE, "%s", SIZE_ASM_OP); \
|
||||
assemble_name (FILE, NAME); \
|
||||
fputc (',', FILE); \
|
||||
fprintf (FILE, HOST_WIDE_INT_PRINT_DEC, size); \
|
||||
fputc ('\n', FILE); \
|
||||
} \
|
||||
ASM_OUTPUT_LABEL(FILE, NAME); \
|
||||
} while (0)
|
||||
|
||||
/* Output the size directive for a decl in rest_of_decl_compilation
|
||||
@ -462,22 +537,24 @@ void FN () \
|
||||
|
||||
#undef ASM_FINISH_DECLARE_OBJECT
|
||||
#define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \
|
||||
do { \
|
||||
char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \
|
||||
if (!flag_inhibit_size_directive && DECL_SIZE (DECL) \
|
||||
&& ! AT_END && TOP_LEVEL \
|
||||
&& DECL_INITIAL (DECL) == error_mark_node \
|
||||
&& !size_directive_output) \
|
||||
{ \
|
||||
size_directive_output = 1; \
|
||||
fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
|
||||
assemble_name (FILE, name); \
|
||||
putc (',', FILE); \
|
||||
fprintf (FILE, HOST_WIDE_INT_PRINT_DEC, \
|
||||
int_size_in_bytes (TREE_TYPE (DECL))); \
|
||||
putc ('\n', FILE); \
|
||||
} \
|
||||
} while (0)
|
||||
do { \
|
||||
const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \
|
||||
HOST_WIDE_INT size; \
|
||||
if (!flag_inhibit_size_directive \
|
||||
&& DECL_SIZE (DECL) \
|
||||
&& ! AT_END && TOP_LEVEL \
|
||||
&& DECL_INITIAL (DECL) == error_mark_node \
|
||||
&& !size_directive_output \
|
||||
&& (size = int_size_in_bytes (TREE_TYPE (DECL))) > 0) \
|
||||
{ \
|
||||
size_directive_output = 1; \
|
||||
fprintf (FILE, "%s", SIZE_ASM_OP); \
|
||||
assemble_name (FILE, name); \
|
||||
fputc (',', FILE); \
|
||||
fprintf (FILE, HOST_WIDE_INT_PRINT_DEC, size); \
|
||||
fputc ('\n', FILE); \
|
||||
} \
|
||||
} while (0)
|
||||
|
||||
/* A table of bytes codes used by the ASM_OUTPUT_ASCII and
|
||||
ASM_OUTPUT_LIMITED_STRING macros. Each byte in the table
|
||||
@ -493,6 +570,7 @@ do { \
|
||||
the i386) don't know about that. Also, we don't use \v
|
||||
since some versions of gas, such as 2.2 did not accept it. */
|
||||
|
||||
#undef ESCAPES
|
||||
#define ESCAPES \
|
||||
"\1\1\1\1\1\1\1\1btn\1fr\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
|
||||
\0\0\"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
|
||||
@ -514,29 +592,29 @@ do { \
|
||||
If your target assembler doesn't support the .string directive, you
|
||||
should define this to zero. */
|
||||
|
||||
#undef STRING_LIMIT
|
||||
#define STRING_LIMIT ((unsigned) 256)
|
||||
#undef STRING_ASM_OP
|
||||
#define STRING_ASM_OP ".string"
|
||||
#define STRING_ASM_OP "\t.string\t"
|
||||
|
||||
/* GAS is the only Alpha/ELF assembler. */
|
||||
#undef TARGET_GAS
|
||||
#undef TARGET_GAS
|
||||
#define TARGET_GAS (1)
|
||||
|
||||
/* Provide a STARTFILE_SPEC appropriate for ELF. Here we add the
|
||||
(even more) magical crtbegin.o file which provides part of the
|
||||
support for getting C++ file-scope static object constructed before
|
||||
entering `main'.
|
||||
support for getting C++ file-scope static object constructed
|
||||
before entering `main'.
|
||||
|
||||
Don't bother seeing crtstuff.c -- there is absolutely no hope of
|
||||
getting that file to understand multiple GPs. GNU Libc provides a
|
||||
hand-coded version that is used on Linux; it could be copied here
|
||||
if there is ever a need. */
|
||||
Don't bother seeing crtstuff.c -- there is absolutely no hope
|
||||
of getting that file to understand multiple GPs. We provide a
|
||||
hand-coded assembly version. */
|
||||
|
||||
#undef STARTFILE_SPEC
|
||||
#define STARTFILE_SPEC \
|
||||
"%{!shared: \
|
||||
%{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}\
|
||||
crti.o%s crtbegin.o%s"
|
||||
crti.o%s %{shared:crtbeginS.o%s}%{!shared:crtbegin.o%s}"
|
||||
|
||||
/* Provide a ENDFILE_SPEC appropriate for ELF. Here we tack on the
|
||||
magical crtend.o file which provides part of the support for
|
||||
@ -545,13 +623,49 @@ do { \
|
||||
|
||||
#undef ENDFILE_SPEC
|
||||
#define ENDFILE_SPEC \
|
||||
"crtend.o%s crtn.o%s"
|
||||
"%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
|
||||
%{shared:crtendS.o%s}%{!shared:crtend.o%s} crtn.o%s"
|
||||
|
||||
/* We support #pragma. */
|
||||
#define HANDLE_SYSV_PRAGMA
|
||||
|
||||
/* Undo the auto-alignment stuff from alpha.h. ELF has unaligned data
|
||||
pseudos natively. */
|
||||
#undef UNALIGNED_SHORT_ASM_OP
|
||||
#undef UNALIGNED_INT_ASM_OP
|
||||
#undef UNALIGNED_DOUBLE_INT_ASM_OP
|
||||
/* Select a format to encode pointers in exception handling data. CODE
|
||||
is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is
|
||||
true if the symbol may be affected by dynamic relocations.
|
||||
|
||||
Since application size is already constrained to <2GB by the form of
|
||||
the ldgp relocation, we can use a 32-bit pc-relative relocation to
|
||||
static data. Dynamic data is accessed indirectly to allow for read
|
||||
only EH sections. */
|
||||
#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
|
||||
(((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4)
|
||||
|
||||
/* If defined, a C statement to be executed just prior to the output of
|
||||
assembler code for INSN. */
|
||||
#define FINAL_PRESCAN_INSN(INSN, OPVEC, NOPERANDS) \
|
||||
(alpha_this_literal_sequence_number = 0, \
|
||||
alpha_this_gpdisp_sequence_number = 0)
|
||||
extern int alpha_this_literal_sequence_number;
|
||||
extern int alpha_this_gpdisp_sequence_number;
|
||||
|
||||
/* Since the bits of the _init and _fini function is spread across
|
||||
many object files, each potentially with its own GP, we must assume
|
||||
we need to load our GP. Further, the .init/.fini section can
|
||||
easily be more than 4MB away from the function to call so we can't
|
||||
use bsr. */
|
||||
#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
|
||||
asm (SECTION_OP "\n" \
|
||||
" br $29,1f\n" \
|
||||
"1: ldgp $29,0($29)\n" \
|
||||
" unop\n" \
|
||||
" jsr $26," USER_LABEL_PREFIX #FUNC "\n" \
|
||||
" .align 3\n" \
|
||||
" .previous");
|
||||
|
||||
/* If we have the capability create headers for efficient EH lookup.
|
||||
As of Jan 2002, only glibc 2.2.4 can actually make use of this, but
|
||||
I imagine that other systems will catch up. In the meantime, it
|
||||
doesn't harm to make sure that the data exists to be used later. */
|
||||
#if defined(HAVE_LD_EH_FRAME_HDR)
|
||||
#define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "
|
||||
#endif
|
||||
|
||||
Loading…
Reference in New Issue
Block a user