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 2000-08-01 03:16:27 +00:00
parent a535ce141f
commit ed80b9ee77
6 changed files with 264 additions and 0 deletions

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@ -1,3 +1,27 @@
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.
2000-07-31 H.J. Lu <hjl@gnu.org>
* sysdeps/generic/printf_fphex.c (__printf_fphex): Correctly

87
sysdeps/ia64/_mcount.S Normal file
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@ -0,0 +1,87 @@
/* Machine-specific calling sequence for `mcount' profiling function. ia64
Copyright (C) 2000 Free Software Foundation, Inc.
Contributed by David Mosberger <davidm@hpl.hp.com>
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* Assembly stub to invoke _mcount(). Compiler generated code calls
this stub before executing a function's prologue and without saving
any registers. It is therefore necessary to preserve the input
registers as they may contain function arguments. To work
correctly with frame-less functions, it is also necessary to
preserve the return pointer (b0 aka rp).
State upon entering _mcount:
r8 address of return value structure (used only when called
function returns a large structure)
r15 static link (used only for nested functions)
in0 ar.pfs to restore before returning to the function that
called _mcount
in1 gp value to restore before returning to the function that
called _mcount
in2 return address in the function that invoked the caller
of _mcount (frompc)
in3 address of the global-offset table entry that holds the
profile count dword allocated by the compiler; to get
the address of this dword, use "ld8 in2=[in2]; this
dword can be used in any way by _mcount (including
not at all, as is the case with the current implementation)
b0 address to return to after _mcount is done
*/
#include <sysdep.h>
#undef ret
.psr abi64
.psr lsb
.lsb
LEAF(_mcount)
alloc loc0 = ar.pfs, 4, 4, 3, 0
mov loc1 = rp
mov loc2 = r8 // gcc uses r8 to pass pointer to return structure
;;
mov loc3 = r15 // gcc uses r15 to pass the static link to nested functions
mov out0 = in2
mov out1 = rp
br.call.sptk.few rp = __mcount_internal
;;
.here:
{
.mii
mov gp = in1
mov r2 = ip
mov ar.pfs = loc0
}
;;
adds r2 = 1f - .here, r2
mov b7 = loc1
mov rp = in2
;;
mov r8 = loc2
mov r15 = loc3
mov b6 = r2
br.ret.sptk.few b6
1: alloc r2 = ar.pfs, 0, 0, 9, 0
mov ar.pfs = r40
br b7
END(_mcount)
weak_alias (_mcount, mcount)

116
sysdeps/ia64/elf/initfini.c Normal file
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@ -0,0 +1,116 @@
/* Special .init and .fini section support for ia64.
Copyright (C) 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it
and/or modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
In addition to the permissions in the GNU Library 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 Library 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.)
The GNU C Library 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 Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* This file is compiled into assembly code which is then munged by a sed
script into two files: crti.s and crtn.s.
* crti.s puts a function prologue at the beginning of the
.init and .fini sections and defines global symbols for
those addresses, so they can be called as functions.
* crtn.s puts the corresponding function epilogues
in the .init and .fini sections. */
__asm__ ("
#include \"defs.h\"
/*@HEADER_ENDS*/
/*@_init_PROLOG_BEGINS*/
.section .init
.align 16
.global _init#
.proc _init#
_init:
alloc r34 = ar.pfs, 0, 3, 0, 0
mov r32 = r12
mov r33 = b0
adds r12 = -16, r12
addl r14 = @ltoff(@fptr(__gmon_start__#)), gp
;;
ld8 r15 = [r14]
;;
cmp.eq p6, p7 = 0, r15
(p6) br.cond.dptk .L5
/* we could use r35 to save gp, but we use the stack since that's what
* all the other init routines will do --davidm 00/04/05 */
st8 [r12] = gp, -16
br.call.sptk.many b0 = __gmon_start__# ;;
adds r12 = 16, r12
;;
ld8 gp = [r12]
;;
.L5:
.align 16
.endp _init#
/*@_init_PROLOG_ENDS*/
/*@_init_EPILOG_BEGINS*/
.section .init
.regstk 0,2,0,0
mov r12 = r32
mov ar.pfs = r34
mov b0 = r33
br.ret.sptk.many b0
.endp _init#
/*@_init_EPILOG_ENDS*/
/*@_fini_PROLOG_BEGINS*/
.section .fini
.align 16
.global _fini#
.proc _fini#
_fini:
alloc r34 = ar.pfs, 0, 3, 0, 0
mov r32 = r12
mov r33 = b0
adds r12 = -16, r12
;;
.align 16
.endp _fini#
/*@_fini_PROLOG_ENDS*/
br.call.sptk.many b0 = i_am_not_a_leaf# ;;
;;
/*@_fini_EPILOG_BEGINS*/
.section .fini
mov r12 = r32
mov ar.pfs = r34
mov b0 = r33
br.ret.sptk.many b0
.endp _fini#
/*@_fini_EPILOG_ENDS*/
/*@TRAILER_BEGINS*/
.weak __gmon_start__#
");

35
sysdeps/ia64/sysdep.h Normal file
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@ -0,0 +1,35 @@
/* Copyright (C) 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <sysdeps/generic/sysdep.h>
#ifdef __ASSEMBLER__
#define LEAF(name) \
.text; \
.align 32; \
.proc C_SYMBOL_NAME(name); \
.global name; \
C_LABEL(name)
/* Mark the end of function SYM. */
#undef END
#define END(sym) .endp C_SYMBOL_NAME(sym)
#endif /* ASSEMBLER */

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@ -68,6 +68,7 @@ ENTRY(__clone)
mov ar.pfs = loc0
mov gp = loc1
mov r32 = r8 // exit value
;;
br.call.sptk b0 = _exit // we're out of here
PSEUDO_END(__clone)

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@ -19,6 +19,7 @@
Boston, MA 02111-1307, USA. */
#include <sysdeps/unix/sysdep.h>
#include <sysdeps/ia64/sysdep.h>
/* For Linux we can use the system call table in the header file
/usr/include/asm/unistd.h