From de5c0edc804b6f2b09c05a0bde1e6679d57e4ca4 Mon Sep 17 00:00:00 2001 From: Stafford Horne Date: Wed, 20 Oct 2021 06:48:11 +0900 Subject: or1k: startup and dynamic linking code Code for C runtime startup and dynamic loading including PLT layout. Reviewed-by: Adhemerval Zanella --- sysdeps/or1k/bits/link.h | 54 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 sysdeps/or1k/bits/link.h (limited to 'sysdeps/or1k/bits') diff --git a/sysdeps/or1k/bits/link.h b/sysdeps/or1k/bits/link.h new file mode 100644 index 0000000000..16b3fada2c --- /dev/null +++ b/sysdeps/or1k/bits/link.h @@ -0,0 +1,54 @@ +/* Declarations for dynamic linker interface. OpenRISC version. + Copyright (C) 2022 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. */ +typedef struct La_or1k_regs +{ + uint32_t lr_reg[6]; /* Args passed in r3-r8. */ + uint32_t lr_sp; /* Register r1. */ + uint32_t lr_lr; /* Register r9. */ +} La_or1k_regs; + +/* Return values for calls from PLT. */ +typedef struct La_or1k_retval +{ + /* Up to two 32-bit registers used for a return value. */ + uint32_t lrv_reg[2]; +} La_or1k_retval; + +__BEGIN_DECLS + +extern Elf32_Addr la_or1k_gnu_pltenter (Elf32_Sym *__sym, unsigned int __ndx, + uintptr_t *__refcook, + uintptr_t *__defcook, + La_or1k_regs *__regs, + unsigned int *__flags, + const char *__symname, + long int *__framesizep); +extern unsigned int la_or1k_gnu_pltexit (Elf32_Sym *__sym, unsigned int __ndx, + uintptr_t *__refcook, + uintptr_t *__defcook, + const La_or1k_regs *__inregs, + La_or1k_retval *__outregs, + const char *__symname); + +__END_DECLS -- cgit 1.4.1