From dd2e6ef179e1b50496ae6afc057b276a7786a78f Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Tue, 23 Oct 2018 12:36:32 -0700 Subject: ARC: startup and dynamic linking code Code for C runtime startup and dynamic loading including PLT layout. Reviewed-by: Adhemerval Zanella --- sysdeps/arc/bits/link.h | 52 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 sysdeps/arc/bits/link.h (limited to 'sysdeps/arc/bits') diff --git a/sysdeps/arc/bits/link.h b/sysdeps/arc/bits/link.h new file mode 100644 index 0000000000..b687250a7a --- /dev/null +++ b/sysdeps/arc/bits/link.h @@ -0,0 +1,52 @@ +/* Machine-specific declarations for dynamic linker interface, ARC version. + Copyright (C) 2020 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 + . */ + +#ifndef _LINK_H +# error "Never include directly; use instead." +#endif + +/* Registers for entry into PLT on ARC. */ +typedef struct La_arc_regs +{ + uint32_t lr_reg[8]; /* r0 through r7 (upto 8 args). */ +} La_arc_regs; + +/* Return values for calls from PLT on ARC. */ +typedef struct La_arc_retval +{ + /* For ARCv2, a 64-bit integer return value can use 2 regs. */ + uint32_t lrv_reg[2]; +} La_arc_retval; + +__BEGIN_DECLS + +extern ElfW(Addr) la_arc_gnu_pltenter (ElfW(Sym) *__sym, unsigned int __ndx, + uintptr_t *__refcook, + uintptr_t *__defcook, + La_arc_regs *__regs, + unsigned int *__flags, + const char *__symname, + long int *__framesizep); +extern unsigned int la_arc_gnu_pltexit (ElfW(Sym) *__sym, unsigned int __ndx, + uintptr_t *__refcook, + uintptr_t *__defcook, + const La_arc_regs *__inregs, + La_arc_retval *__outregs, + const char *symname); + +__END_DECLS -- cgit 1.4.1