+2001-07-11 Timothy Wall <twall@redhat.com>
+
+ * config.gcc: Add configuration for AIX5/IA64.
+ * config/ia64/aix.h: New. AIX5/IA64-specific configuration.
+ * config/ia64/crt[in].asm: New. Generic static ctor/dtor
+ support prefix/suffix code.
+ * config/ia64/t-aix: New. Makefile fragment.
+ * config/ia64/unwind-aix.c: New. Unwind table entry lookup.
+
2001-07-11 Kazu Hirata <kazu@hxi.com>
* recog.c (validate_change): Fix a comment typo.
c_target_objs="i960-c.o"
cxx_target_objs="i960-c.o"
;;
+ia64*-*-aix*)
+ tm_file="${tm_file} svr4.h ia64/sysv4.h ia64/aix.h"
+ tmake_file="ia64/t-ia64 ia64/t-aix"
+ target_cpu_default="MASK_GNU_AS|MASK_GNU_LD"
+ ;;
ia64*-*-elf*)
tm_file=ia64/elf.h
tmake_file="ia64/t-ia64"
--- /dev/null
+/* Definitions of target machine GNU compiler. IA-64/AIX version.
+ Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
+ Contributed by Timothy Wall (twall@cygnus.com)
+
+This file is part of GNU CC.
+
+GNU CC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU CC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU CC; see the file COPYING. If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+/* AIX5 (aka Monterey): a mix of AIX and UnixWare.
+ This file is loosely based on ia64/linux.h. */
+
+#undef ASM_APP_ON
+#define ASM_APP_ON "#APP\n"
+
+#undef ASM_APP_OFF
+#define ASM_APP_OFF "#NO_APP\n"
+
+#define SET_ASM_OP "\t.set\t"
+
+/*#undef PREFERRED_DEBUGGING_TYPE*/
+/*#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG*/
+
+#undef MD_EXEC_PREFIX
+#undef MD_STARTFILE_PREFIX
+#define MD_STARTFILE_PREFIX "/usr/lib/ia64l64/"
+
+/* Output at beginning of assembler file. */
+/* The .file command should always begin the output. */
+#undef ASM_FILE_START
+#define ASM_FILE_START(FILE) \
+ do { \
+ output_file_directive (FILE, main_input_filename); \
+ fprintf (FILE, "\t.version\t\"01.01\"\n"); \
+ } while (0)
+
+/* Provide a STARTFILE_SPEC appropriate for AIX. Here we add
+ the crti C++ startup files file which provide part of the support
+ for getting C++ file-scope static object constructed before entering
+ `main'. */
+
+#undef STARTFILE_SPEC
+#define STARTFILE_SPEC \
+"%{!shared: \
+ %{pg:gcrt1_64.o%s} %{!pg:%{p:mcrt1_64.o%s} \
+ %{!p:%{profile:gcrt1_64.o%s} \
+ %{!profile:crt1_64.o%s}}}} \
+ crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
+
+/* Provide a ENDFILE_SPEC appropriate for AIX. Here we tack on
+ the crtn file which provides termination of the support for getting C++
+ file-scope static object constructed before entering `main'. */
+
+#undef ENDFILE_SPEC
+#define ENDFILE_SPEC "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
+
+#undef DEFAULT_VTABLE_THUNKS
+#define DEFAULT_VTABLE_THUNKS 1
+
+/* Define this so we can compile MS code for use with WINE. */
+#define HANDLE_PRAGMA_PACK_PUSH_POP
+
+/* A C string constant that tells the GNU CC driver program options to pass to
+ CPP. It can also specify how to translate options you give to GNU CC into
+ options for GNU CC to pass to the CPP. */
+
+/* If -ansi, we need to define _ANSI_C_SOURCE to get the right headers. */
+#undef CPP_SPEC
+#define CPP_SPEC "\
+%{mcpu=itanium:-D__itanium__} %{mbig-endian:-D__BIG_ENDIAN__} \
+%{ansi:-D_ANSI_C_SOURCE} \
+%{posix:-D_POSIX_SOURCE} \
+%{cpp_cpu} \
+-D__LONG_MAX__=9223372036854775807L"
+
+#undef CPP_PREDEFINES
+#define CPP_PREDEFINES "\
+-D__ia64 -D__ia64__ -D_AIX -D_AIX64 -D_LONGLONG -Dunix \
+-D__LP64__ -D__ELF__ -Asystem=unix -Asystem=aix -Acpu=ia64 -Amachine=ia64 \
+-D__64BIT__ -D_LONG_LONG -D_IA64 -D__int128=__size128_t"
+
+/* The GNU C++ standard library requires that these macros be defined. */
+#undef CPLUSPLUS_CPP_SPEC
+#define CPLUSPLUS_CPP_SPEC \
+ "-D_XOPEN_SOURCE=500 \
+ -D_XOPEN_SOURCE_EXTENDED=1 \
+ -D_LARGE_FILE_API \
+ -D_ALL_SOURCE \
+ -D__LONG_MAX__=9223372036854775807L \
+ %{cpp_cpu}"
+
+/* ia64-specific options for gas */
+#undef ASM_SPEC
+#define ASM_SPEC "-x %{mconstant-gp} %{mauto-pic}"
+
+/* Define this for shared library support. */
+
+#undef LINK_SPEC
+#define LINK_SPEC "\
+%{shared:-shared} \
+%{!shared: \
+ %{!static: \
+ %{rdynamic:-export-dynamic} \
+ %{!dynamic-linker:-dynamic-linker /usr/lib/ia64l64/libc.so.1}} \
+ %{static:-static}}"
+
+#define DONT_USE_BUILTIN_SETJMP
+#define JMP_BUF_SIZE 85
+
+/* Output any profiling code before the prologue. */
+
+#undef PROFILE_BEFORE_PROLOGUE
+#define PROFILE_BEFORE_PROLOGUE 1
+
+/* A C statement or compound statement to output to FILE some assembler code to
+ call the profiling subroutine `mcount'.
+
+ FIXME this is not supported until xlC supports it and can thus tell us
+ how to do it.
+*/
+
+#undef FUNCTION_PROFILER
+#define FUNCTION_PROFILER(FILE, LABELNO) \
+do { \
+} while (0)
+
+/* Tell the linker where to find the crt*.o files. */
+
+#ifndef CROSS_COMPILE
+#undef STANDARD_STARTFILE_PREFIX
+#define STANDARD_STARTFILE_PREFIX "/usr/lib/ia64l64/"
+#endif
+
+/* Override SELECT_SECTION and SELECT_RTX_SECTION from config/ia64/sysv4.h;
+ these definitions ignore flag_pic as if it were always set;
+ it is illegal to have relocations in shared segments on AIX. */
+
+/* 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 (TREE_CODE (DECL) == STRING_CST) \
+ { \
+ if (! flag_writable_strings) \
+ const_section (); \
+ else \
+ data_section (); \
+ } \
+ else if (TREE_CODE (DECL) == VAR_DECL) \
+ { \
+ if (XSTR (XEXP (DECL_RTL (DECL), 0), 0)[0] \
+ == SDATA_NAME_FLAG_CHAR) \
+ sdata_section (); \
+ /* ??? We need the extra ! RELOC check, because the default is to \
+ only check RELOC if flag_pic is set, and we don't set flag_pic \
+ (yet?). */ \
+ else if (DECL_READONLY_SECTION (DECL, RELOC) && ! (RELOC)) \
+ const_section (); \
+ else \
+ data_section (); \
+ } \
+ /* This could be a CONSTRUCTOR containing ADDR_EXPR of a VAR_DECL, \
+ in which case we can't put it in a shared library rodata. */ \
+ else if (RELOC) \
+ data_section (); \
+ else \
+ const_section (); \
+}
+
+/* Similarly for constant pool data. */
+
+extern unsigned int ia64_section_threshold;
+#undef SELECT_RTX_SECTION
+#define SELECT_RTX_SECTION(MODE, RTX) \
+{ \
+ if (GET_MODE_SIZE (MODE) > 0 \
+ && GET_MODE_SIZE (MODE) <= ia64_section_threshold) \
+ sdata_section (); \
+ else if (symbolic_operand ((RTX), (MODE))) \
+ data_section (); \
+ else \
+ const_section (); \
+}
+
+#undef UNIQUE_SECTION
+#define UNIQUE_SECTION(DECL, RELOC) \
+ do \
+ { \
+ int len; \
+ int sec; \
+ const char *name; \
+ char *string; \
+ const char *prefix; \
+ static const char *prefixes[/*4*/3][2] = \
+ { \
+ { ".text.", ".gnu.linkonce.t." }, \
+ { ".rodata.", ".gnu.linkonce.r." }, \
+ { ".data.", ".gnu.linkonce.d." } \
+ /* Do not generate unique sections for uninitialised \
+ data since we do not have support for this in the \
+ linker scripts yet... \
+ ,{ ".bss.", ".gnu.linkonce.b." } */ \
+ }; \
+ \
+ if (TREE_CODE (DECL) == FUNCTION_DECL) \
+ sec = 0; \
+ /* else if (DECL_INITIAL (DECL) == 0 \
+ || DECL_INITIAL (DECL) == error_mark_node) \
+ sec = 3; */ \
+ else if (DECL_READONLY_SECTION (DECL, RELOC) && ! (RELOC))\
+ sec = 1; \
+ else \
+ sec = 2; \
+ \
+ name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL)); \
+ /* Strip off any encoding in name. */ \
+ STRIP_NAME_ENCODING (name, name); \
+ prefix = prefixes[sec][DECL_ONE_ONLY(DECL)]; \
+ 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)
+
+/* Override ia64/sysv4.h setting with that used by AIX5. */
+#undef WCHAR_TYPE
+#ifdef __64BIT__
+#define WCHAR_TYPE "unsigned int"
+#else
+#define WCHAR_TYPE "unsigned short"
+#endif
+
+/* Have to get rid of the system's definition so that we can use gcc's
+ instead. */
+#include <sys/machine.h>
+#undef REG_SIZE
+
+/* Define the `__builtin_va_list' type for AIX. Use char* b/c that's what the
+ system headers expect. */
+#define BUILD_VA_LIST_TYPE(VALIST) \
+ (VALIST) = build_pointer_type(char_type_node)
+
+/* End of aix.h */
--- /dev/null
+# Copyright (C) 2000, 2001 Free Software Foundation, Inc.
+# Written By Timothy Wall
+#
+# This file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 2, or (at your option) any
+# later version.
+#
+# In addition to the permissions in the GNU General Public License, the
+# Free Software Foundation gives you unlimited permission to link the
+# compiled version of this file with other programs, and to distribute
+# those programs without any restriction coming from the use of this
+# file. (The General Public License restrictions do apply in other
+# respects; for example, they cover modification of the file, and
+# distribution when not linked into another program.)
+#
+# This file is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; see the file COPYING. If not, write to
+# the Free Software Foundation, 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+#
+# As a special exception, if you link this library with files
+# compiled with GCC to produce an executable, this does not cause
+# the resulting executable to be covered by the GNU General Public License.
+# This exception does not however invalidate any other reasons why
+# the executable file might be covered by the GNU General Public License.
+#
+
+# This file just make a stack frame for the contents of the .fini and
+# .init sections. Users may put any desired instructions in those
+# sections.
+
+ .file "crti.asm"
+
+ .section ".init"
+ .align 16
+ .global _init#
+_init:
+ .prologue 14, 33
+ .save ar.pfs, r34
+ alloc r34 = ar.pfs, 0, 4, 0, 0
+ .vframe r35
+ mov r35 = r12
+ .save rp, r33
+ mov r33 = b0
+ .body
+
+ .section ".fini"
+ .align 16
+ .global _fini#
+_fini:
+ .prologue 14, 33
+ .save ar.pfs, r34
+ alloc r34 = ar.pfs, 0, 4, 0, 0
+ .vframe r35
+ mov r35 = r12
+ .save rp, r33
+ mov r33 = b0
+ .body
+
+# end of crti.asm
--- /dev/null
+# Copyright (C) 2000, 2001 Free Software Foundation, Inc.
+# Written By Timothy Wall
+#
+# This file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 2, or (at your option) any
+# later version.
+#
+# In addition to the permissions in the GNU General Public License, the
+# Free Software Foundation gives you unlimited permission to link the
+# compiled version of this file with other programs, and to distribute
+# those programs without any restriction coming from the use of this
+# file. (The General Public License restrictions do apply in other
+# respects; for example, they cover modification of the file, and
+# distribution when not linked into another program.)
+#
+# This file is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; see the file COPYING. If not, write to
+# the Free Software Foundation, 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+#
+# As a special exception, if you link this library with files
+# compiled with GCC to produce an executable, this does not cause
+# the resulting executable to be covered by the GNU General Public License.
+# This exception does not however invalidate any other reasons why
+# the executable file might be covered by the GNU General Public License.
+#
+
+# This file just makes sure that the .fini and .init sections do in
+# fact return. Users may put any desired instructions in those sections.
+# This file is the last thing linked into any executable.
+
+ .file "crtn.asm"
+
+ .section ".init"
+ ;;
+ mov ar.pfs = r34
+ mov b0 = r33
+ .restore sp
+ mov r12 = r35
+ br.ret.sptk.many b0
+
+ .section ".fini"
+ ;;
+ mov ar.pfs = r34
+ mov b0 = r33
+ .restore sp
+ mov r12 = r35
+ br.ret.sptk.many b0
+
+# end of crtn.asm
--- /dev/null
+# AIX support
+
+# Compile crtbeginS.o and crtendS.o with pic.
+CRTSTUFF_T_CFLAGS_S = -fPIC
+# Compile libgcc2.a with pic and defines required by AIX headers
+TARGET_LIBGCC2_CFLAGS = -fPIC -D__64BIT__ -D_LONG_LONG -D_IA64 -D__int128=__size128_t
+LIB2ADDEH += $(srcdir)/config/ia64/unwind-aix.c
+
+# Add crt[in].o to the list defined in t-ia64. These files provide
+# endpoints for crtbegin/end.
+
+EXTRA_PARTS=crti.o crtn.o crtbegin.o crtend.o crtbeginS.o crtendS.o
+
+crti.o: $(srcdir)/config/ia64/crti.asm $(GCC_PASSES)
+ $(GCC_FOR_TARGET) -c -o crti.o -x assembler $(srcdir)/config/ia64/crti.asm
+crtn.o: $(srcdir)/config/ia64/crtn.asm $(GCC_PASSES)
+ $(GCC_FOR_TARGET) -c -o crtn.o -x assembler $(srcdir)/config/ia64/crtn.asm
+
+# end t-aix
--- /dev/null
+/* Implements unwind table entry lookup for AIX (cf. fde-glibc.c).
+ Copyright (C) 2001 Free Software Foundation, Inc.
+ Contributed by Timothy Wall <twall@redhat.com>
+
+ This file is part of GNU CC.
+
+ GNU CC is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ GNU CC is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GNU CC; see the file COPYING. If not, write to
+ the Free Software Foundation, 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include "tconfig.h"
+#include "tsystem.h"
+#include "unwind.h"
+#include "unwind-ia64.h"
+
+#include <dlfcn.h>
+#include <link.h>
+#include <sys/mman.h>
+
+static struct unw_table_entry *
+find_fde_for_dso (Elf64_Addr pc, rt_link_map *map,
+ unsigned long* pseg_base, unsigned long* pgp)
+{
+ rt_segment *seg;
+ Elf64_Addr seg_base;
+ struct unw_table_entry *f_base;
+ size_t lo, hi;
+
+ /* See if PC falls into one of the loaded segments. */
+ for (seg = map->l_segments; seg; seg = (rt_segment *)seg->s_next)
+ {
+ if (pc >= seg->s_map_addr && pc < seg->s_map_addr + seg->s_mapsz)
+ break;
+ }
+ if (!seg)
+ return NULL;
+
+ /* Search for the entry within the unwind table. */
+ f_base = (struct unw_table_entry *) (map->l_unwind_table);
+ seg_base = (Elf64_Addr) seg->s_map_addr;
+ lo = 0;
+ hi = map->l_unwind_sz / sizeof (struct unw_table_entry);
+
+ while (lo < hi)
+ {
+ size_t mid = (lo + hi) / 2;
+ struct unw_table_entry *f = f_base + mid;
+
+ if (pc < f->start_offset + seg_base)
+ hi = mid;
+ else if (pc >= f->end_offset + seg_base)
+ lo = mid + 1;
+ else {
+ /* AIX executables are *always* dynamic. Look up GP for this
+ object. */
+ Elf64_Dyn *dyn = map->l_ld;
+ *pgp = 0;
+ for (; dyn->d_tag != DT_NULL ; dyn++)
+ {
+ if (dyn->d_tag == DT_PLTGOT)
+ {
+ *pgp = dyn->d_un.d_ptr;
+ break;
+ }
+ }
+ *pseg_base = seg_base;
+ return f;
+ }
+ }
+ return NULL;
+}
+
+/* Return a pointer to the unwind table entry for the function containing
+ PC. */
+struct unw_table_entry *
+_Unwind_FindTableEntry (void *pc, unsigned long *pseg_base, unsigned long *pgp)
+{
+ extern rt_r_debug _r_debug;
+ struct unw_table_entry *ret;
+ rt_link_map *map = _r_debug.r_map; /* address of link map */
+
+ /* Check the main application first, hoping that most of the user's
+ code is there instead of in some library. */
+ ret = find_fde_for_dso ((Elf64_Addr)pc, map, pseg_base, pgp);
+ if (ret)
+ {
+ /* If we're in the main application, use the current GP value. */
+ register unsigned long gp __asm__("gp");
+ *pgp = gp;
+ return ret;
+ }
+
+ /* FIXME need a DSO lock mechanism for AIX here, to ensure shared
+ libraries aren't changed while we're examining them. */
+
+ for (map = _r_debug.r_map; map; map = map->l_next)
+ {
+ /* Skip the main application's entry. */
+ if (!map->l_name)
+ continue;
+ ret = find_fde_for_dso ((Elf64_Addr)pc, map, pseg_base, pgp);
+ if (ret)
+ break;
+ }
+
+ /* FIXME need a DSO unlock mechanism for AIX here. */
+
+ return ret;
+}
projects / gcc.git / commitdiff