diff options
| -rw-r--r-- | ChangeLog | 24 | ||||
| -rw-r--r-- | sysdeps/ia64/_mcount.S | 87 | ||||
| -rw-r--r-- | sysdeps/ia64/elf/initfini.c | 116 | ||||
| -rw-r--r-- | sysdeps/ia64/sysdep.h | 35 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/ia64/clone.S | 1 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/ia64/sysdep.h | 1 |
6 files changed, 264 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index 2de263836d..656a99b27e 100644 --- a/ChangeLog +++ b/ChangeLog @@ -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 diff --git a/sysdeps/ia64/_mcount.S b/sysdeps/ia64/_mcount.S new file mode 100644 index 0000000000..5d0a26ad87 --- /dev/null +++ b/sysdeps/ia64/_mcount.S @@ -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) diff --git a/sysdeps/ia64/elf/initfini.c b/sysdeps/ia64/elf/initfini.c new file mode 100644 index 0000000000..8d5028610f --- /dev/null +++ b/sysdeps/ia64/elf/initfini.c @@ -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__# +"); diff --git a/sysdeps/ia64/sysdep.h b/sysdeps/ia64/sysdep.h new file mode 100644 index 0000000000..aab440dd87 --- /dev/null +++ b/sysdeps/ia64/sysdep.h @@ -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 */ diff --git a/sysdeps/unix/sysv/linux/ia64/clone.S b/sysdeps/unix/sysv/linux/ia64/clone.S index 696e7f5bf1..75a33d2f2c 100644 --- a/sysdeps/unix/sysv/linux/ia64/clone.S +++ b/sysdeps/unix/sysv/linux/ia64/clone.S @@ -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) diff --git a/sysdeps/unix/sysv/linux/ia64/sysdep.h b/sysdeps/unix/sysv/linux/ia64/sysdep.h index 83c4bad003..bb4ab29eba 100644 --- a/sysdeps/unix/sysv/linux/ia64/sysdep.h +++ b/sysdeps/unix/sysv/linux/ia64/sysdep.h @@ -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 |