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Update.
2000-07-31 Jes Sorensen <jes@linuxcare.com> * sysdeps/ia64/elf/initfini.c: Kill dummy section since align and endp statements have already been added. 2000-04-18 David Mosberger <davidm@hpl.hp.com> * sysdeps/unix/sysv/linux/ia64/sysdep.h: Include <sysdeps/ia64/sysdep.h>. * sysdeps/ia64/_mcount.S: New file. * sysdeps/ia64/elf/initfini.c (_init): Preserve gp around call to __gmon_start__. Fix up extraneous whitespace. 2000-01-12 H.J. Lu <hjl@gnu.org> * sysdeps/ia64/elf/initfini.c: New file. 2000-07-31 Jes Sorensen <jes@linuxcare.com> * sysdeps/unix/sysv/linux/ia64/clone.S: Add stop bit to avoid WAW dependency between branch and ar.pfs write.
This commit is contained in:
Ulrich Drepper
parent
a535ce141f
commit
ed80b9ee77
24
ChangeLog
24
ChangeLog
@ -1,3 +1,27 @@
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2000-07-31 Jes Sorensen <jes@linuxcare.com>
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* sysdeps/ia64/elf/initfini.c: Kill dummy section since align and
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endp statements have already been added.
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2000-04-18 David Mosberger <davidm@hpl.hp.com>
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* sysdeps/unix/sysv/linux/ia64/sysdep.h: Include
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<sysdeps/ia64/sysdep.h>.
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* sysdeps/ia64/_mcount.S: New file.
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* sysdeps/ia64/elf/initfini.c (_init): Preserve gp around call to
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__gmon_start__. Fix up extraneous whitespace.
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2000-01-12 H.J. Lu <hjl@gnu.org>
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* sysdeps/ia64/elf/initfini.c: New file.
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2000-07-31 Jes Sorensen <jes@linuxcare.com>
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* sysdeps/unix/sysv/linux/ia64/clone.S: Add stop bit to avoid WAW
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dependency between branch and ar.pfs write.
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2000-07-31 H.J. Lu <hjl@gnu.org>
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* sysdeps/generic/printf_fphex.c (__printf_fphex): Correctly
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87
sysdeps/ia64/_mcount.S
Normal file
87
sysdeps/ia64/_mcount.S
Normal file
@ -0,0 +1,87 @@
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/* Machine-specific calling sequence for `mcount' profiling function. ia64
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Copyright (C) 2000 Free Software Foundation, Inc.
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Contributed by David Mosberger <davidm@hpl.hp.com>
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* Assembly stub to invoke _mcount(). Compiler generated code calls
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this stub before executing a function's prologue and without saving
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any registers. It is therefore necessary to preserve the input
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registers as they may contain function arguments. To work
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correctly with frame-less functions, it is also necessary to
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preserve the return pointer (b0 aka rp).
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State upon entering _mcount:
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r8 address of return value structure (used only when called
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function returns a large structure)
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r15 static link (used only for nested functions)
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in0 ar.pfs to restore before returning to the function that
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called _mcount
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in1 gp value to restore before returning to the function that
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called _mcount
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in2 return address in the function that invoked the caller
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of _mcount (frompc)
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in3 address of the global-offset table entry that holds the
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profile count dword allocated by the compiler; to get
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the address of this dword, use "ld8 in2=[in2]; this
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dword can be used in any way by _mcount (including
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not at all, as is the case with the current implementation)
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b0 address to return to after _mcount is done
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*/
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#include <sysdep.h>
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#undef ret
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.psr abi64
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.psr lsb
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.lsb
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LEAF(_mcount)
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alloc loc0 = ar.pfs, 4, 4, 3, 0
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mov loc1 = rp
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mov loc2 = r8 // gcc uses r8 to pass pointer to return structure
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;;
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mov loc3 = r15 // gcc uses r15 to pass the static link to nested functions
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mov out0 = in2
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mov out1 = rp
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br.call.sptk.few rp = __mcount_internal
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;;
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.here:
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{
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.mii
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mov gp = in1
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mov r2 = ip
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mov ar.pfs = loc0
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}
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;;
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adds r2 = 1f - .here, r2
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mov b7 = loc1
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mov rp = in2
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;;
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mov r8 = loc2
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mov r15 = loc3
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mov b6 = r2
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br.ret.sptk.few b6
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1: alloc r2 = ar.pfs, 0, 0, 9, 0
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mov ar.pfs = r40
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br b7
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END(_mcount)
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weak_alias (_mcount, mcount)
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116
sysdeps/ia64/elf/initfini.c
Normal file
116
sysdeps/ia64/elf/initfini.c
Normal file
@ -0,0 +1,116 @@
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/* Special .init and .fini section support for ia64.
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Copyright (C) 2000 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it
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and/or modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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In addition to the permissions in the GNU Library General Public
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License, the Free Software Foundation gives you unlimited
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permission to link the compiled version of this file with other
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programs, and to distribute those programs without any restriction
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coming from the use of this file. (The Library General Public
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License restrictions do apply in other respects; for example, they
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cover modification of the file, and distribution when not linked
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into another program.)
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The GNU C Library is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* This file is compiled into assembly code which is then munged by a sed
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script into two files: crti.s and crtn.s.
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* crti.s puts a function prologue at the beginning of the
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.init and .fini sections and defines global symbols for
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those addresses, so they can be called as functions.
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* crtn.s puts the corresponding function epilogues
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in the .init and .fini sections. */
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__asm__ ("
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#include \"defs.h\"
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/*@HEADER_ENDS*/
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/*@_init_PROLOG_BEGINS*/
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.section .init
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.align 16
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.global _init#
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.proc _init#
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_init:
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alloc r34 = ar.pfs, 0, 3, 0, 0
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mov r32 = r12
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mov r33 = b0
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adds r12 = -16, r12
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addl r14 = @ltoff(@fptr(__gmon_start__#)), gp
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;;
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ld8 r15 = [r14]
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;;
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cmp.eq p6, p7 = 0, r15
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(p6) br.cond.dptk .L5
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/* we could use r35 to save gp, but we use the stack since that's what
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* all the other init routines will do --davidm 00/04/05 */
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st8 [r12] = gp, -16
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br.call.sptk.many b0 = __gmon_start__# ;;
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adds r12 = 16, r12
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;;
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ld8 gp = [r12]
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;;
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.L5:
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.align 16
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.endp _init#
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/*@_init_PROLOG_ENDS*/
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/*@_init_EPILOG_BEGINS*/
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.section .init
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.regstk 0,2,0,0
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mov r12 = r32
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mov ar.pfs = r34
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mov b0 = r33
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br.ret.sptk.many b0
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.endp _init#
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/*@_init_EPILOG_ENDS*/
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/*@_fini_PROLOG_BEGINS*/
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.section .fini
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.align 16
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.global _fini#
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.proc _fini#
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_fini:
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alloc r34 = ar.pfs, 0, 3, 0, 0
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mov r32 = r12
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mov r33 = b0
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adds r12 = -16, r12
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;;
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.align 16
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.endp _fini#
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/*@_fini_PROLOG_ENDS*/
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br.call.sptk.many b0 = i_am_not_a_leaf# ;;
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;;
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/*@_fini_EPILOG_BEGINS*/
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.section .fini
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mov r12 = r32
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mov ar.pfs = r34
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mov b0 = r33
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br.ret.sptk.many b0
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.endp _fini#
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/*@_fini_EPILOG_ENDS*/
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/*@TRAILER_BEGINS*/
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.weak __gmon_start__#
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");
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35
sysdeps/ia64/sysdep.h
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35
sysdeps/ia64/sysdep.h
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@ -0,0 +1,35 @@
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/* Copyright (C) 2000 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <sysdeps/generic/sysdep.h>
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#ifdef __ASSEMBLER__
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#define LEAF(name) \
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.text; \
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.align 32; \
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.proc C_SYMBOL_NAME(name); \
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.global name; \
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C_LABEL(name)
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/* Mark the end of function SYM. */
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#undef END
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#define END(sym) .endp C_SYMBOL_NAME(sym)
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#endif /* ASSEMBLER */
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@ -68,6 +68,7 @@ ENTRY(__clone)
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mov ar.pfs = loc0
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mov gp = loc1
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mov r32 = r8 // exit value
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;;
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br.call.sptk b0 = _exit // we're out of here
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PSEUDO_END(__clone)
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@ -19,6 +19,7 @@
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Boston, MA 02111-1307, USA. */
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#include <sysdeps/unix/sysdep.h>
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#include <sysdeps/ia64/sysdep.h>
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/* For Linux we can use the system call table in the header file
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/usr/include/asm/unistd.h
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