diff options
Diffstat (limited to 'sysdeps/ia64/_mcount.S')
| -rw-r--r-- | sysdeps/ia64/_mcount.S | 90 |
1 files changed, 0 insertions, 90 deletions
diff --git a/sysdeps/ia64/_mcount.S b/sysdeps/ia64/_mcount.S deleted file mode 100644 index 21e2949b7e..0000000000 --- a/sysdeps/ia64/_mcount.S +++ /dev/null @@ -1,90 +0,0 @@ -/* Machine-specific calling sequence for `mcount' profiling function. ia64 - Copyright (C) 2000-2024 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 Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <https://www.gnu.org/licenses/>. */ - -/* 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 - -LEAF(_mcount) - .prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(4) - alloc loc1 = ar.pfs, 4, 4, 3, 0 - mov loc0 = rp - .body - 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 - ;; -.here: -{ - .mii - mov gp = in1 - mov r2 = ip - mov ar.pfs = loc1 -} - ;; - adds r2 = _mcount_ret_helper - .here, r2 - mov b7 = loc0 - mov rp = in2 - ;; - mov r3 = in0 - mov r8 = loc2 - mov r15 = loc3 - mov b6 = r2 - br.ret.sptk.few b6 -END(_mcount) - -LOCAL_LEAF(_mcount_ret_helper) - .prologue - .altrp b7 - .save ar.pfs, r3 - .body - alloc r2 = ar.pfs, 0, 0, 8, 0 - mov ar.pfs = r3 - br b7 -END(_mcount_ret_helper) - -weak_alias (_mcount, mcount) |