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* sysdeps/m68k/dl-machine.h: Remove trampoline code. Define

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ARCH_LA_PLTENTER and ARCH_LA_PLTEXIT.
	(elf_machine_runtime_setup): If profile != 0 does not anymore mean
	GLRO(dl_profile) != NULL.
	* sysdeps/m68k/dl-trampoline.S: New file.
	* sysdeps/m68k/bits/link.h: New file.
	* sysdeps/generic/ldsodefs.h (struct audit_ifaces): Add m68k
	variants.
	* elf/tst-auditmod1.c: Add m68k support.
This commit is contained in:
Andreas Schwab 2005-01-16 02:07:29 +00:00
parent cac7d7f9a1
commit 00f36bfbb7
3 changed files with 202 additions and 34 deletions
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58
sysdeps/m68k/bits/link.h Normal file
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@ -0,0 +1,58 @@
/* Copyright (C) 2005 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#ifndef _LINK_H
# error "Never include <bits/link.h> directly; use <link.h> instead."
#endif
/* Registers for entry into PLT on M68K. */
typedef struct La_m68k_regs
{
uint32_t lr_a0;
uint32_t lr_a1;
uint32_t lr_sp;
} La_m68k_regs;
/* Return values for calls from PLT on M68K. */
typedef struct La_m68k_retval
{
uint32_t lrv_d0;
uint32_t lrv_d1;
uint32_t lrv_a0;
long double lrv_fp0;
} La_m68k_retval;
__BEGIN_DECLS
extern Elf32_Addr la_m68k_gnu_pltenter (Elf32_Sym *__sym, unsigned int __ndx,
uintptr_t *__refcook,
uintptr_t *__defcook,
La_m68k_regs *__regs,
unsigned int *__flags,
const char *__symname,
long int *__framesizep);
extern unsigned int la_m68k_gnu_pltexit (Elf32_Sym *__sym, unsigned int __ndx,
uintptr_t *__refcook,
uintptr_t *__defcook,
const La_m68k_regs *__inregs,
La_m68k_retval *__outregs,
const char *symname);
__END_DECLS

49
sysdeps/m68k/dl-machine.h
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@ -1,5 +1,5 @@
/* Machine-dependent ELF dynamic relocation inline functions. m68k version.
Copyright (C) 1996-2001, 2002, 2003, 2004 Free Software Foundation, Inc.
Copyright (C) 1996-2001, 2002, 2003, 2004, 2005 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
@ -85,7 +85,8 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
{
got[2] = (Elf32_Addr) &_dl_runtime_profile;
if (_dl_name_match_p (GLRO(dl_profile), l))
if (GLRO(dl_profile) != NULL
&& _dl_name_match_p (GLRO(dl_profile), l))
{
/* This is the object we are looking for. Say that we really
want profiling and the timers are started. */
@ -101,36 +102,6 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
return lazy;
}
/* This code is used in dl-runtime.c to call the `fixup' function
and then redirect to the address it returns. */
#define TRAMPOLINE_TEMPLATE(tramp_name, fixup_name) \
"| Trampoline for " #fixup_name "\n\
.globl " #tramp_name "\n\
.type " #tramp_name ", @function\n\
" #tramp_name ":\n\
| Save %a0 (struct return address) and %a1.\n\
move.l %a0, -(%sp)\n\
move.l %a1, -(%sp)\n\
| Call the real address resolver.\n\
jbsr " #fixup_name "\n\
| Restore register %a0 and %a1.\n\
move.l (%sp)+, %a1\n\
move.l (%sp)+, %a0\n\
| Pop parameters\n\
addq.l #8, %sp\n\
| Call real function.\n\
jmp (%d0)\n\
.size " #tramp_name ", . - " #tramp_name "\n"
#ifndef PROF
#define ELF_MACHINE_RUNTIME_TRAMPOLINE \
asm (TRAMPOLINE_TEMPLATE (_dl_runtime_resolve, fixup) \
TRAMPOLINE_TEMPLATE (_dl_runtime_profile, profile_fixup));
#else
#define ELF_MACHINE_RUNTIME_TRAMPOLINE \
asm (TRAMPOLINE_TEMPLATE (_dl_runtime_resolve, fixup) \
".globl _dl_runtime_profile\n" \
".set _dl_runtime_profile, _dl_runtime_resolve");
#endif
#define ELF_MACHINE_RUNTIME_FIXUP_ARGS long int save_a0, long int save_a1
@ -216,9 +187,13 @@ elf_machine_plt_value (struct link_map *map, const Elf32_Rela *reloc,
return value;
}
/* Names of the architecture-specific auditing callback functions. */
#define ARCH_LA_PLTENTER m68k_gnu_pltenter
#define ARCH_LA_PLTEXIT m68k_gnu_pltexit
#endif /* !dl_machine_h */
#ifdef RESOLVE
#ifdef RESOLVE_MAP
/* Perform the relocation specified by RELOC and SYM (which is fully resolved).
MAP is the object containing the reloc. */
@ -236,9 +211,15 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
else
{
const Elf32_Sym *const refsym = sym;
#ifndef RTLD_BOOTSTRAP
struct link_map *sym_map = RESOLVE_MAP (&sym, version, r_type);
Elf32_Addr value = sym == NULL ? 0 : sym_map->l_addr + sym->st_value;
#else
Elf32_Addr value = RESOLVE (&sym, version, r_type);
if (sym)
value += sym->st_value;
#endif /* !RTLD_BOOTSTRAP */
switch (r_type)
{
@ -313,4 +294,4 @@ elf_machine_lazy_rel (struct link_map *map,
_dl_reloc_bad_type (map, ELF32_R_TYPE (reloc->r_info), 1);
}
#endif /* RESOLVE */
#endif /* RESOLVE_MAP */

129
sysdeps/m68k/dl-trampoline.S Normal file
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@ -0,0 +1,129 @@
/* PLT trampolines. m68k version.
Copyright (C) 2005 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <sysdep.h>
.text
.globl _dl_runtime_resolve
.type _dl_runtime_resolve, @function
_dl_runtime_resolve:
| Save %a0 (struct return address) and %a1.
move.l %a0, -(%sp)
move.l %a1, -(%sp)
| Call the real address resolver.
jbsr _dl_fixup
| Restore register %a0 and %a1.
move.l (%sp)+, %a1
move.l (%sp)+, %a0
| Pop parameters
addq.l #8, %sp
| Call real function.
jmp (%d0)
.size _dl_runtime_resolve, . - _dl_runtime_resolve
.text
.globl _dl_runtime_profile
.type _dl_runtime_profile, @function
_dl_runtime_profile:
pea 8(%sp)
move.l %a1, -(%sp)
move.l %a0, -(%sp)
pea -1.w
| Push parameters for _dl_profile_fixup
pea (%sp)
pea 8(%sp)
move.l 32(%sp), -(%sp)
move.l 32(%sp), -(%sp)
move.l 32(%sp), -(%sp)
subq.l #8, %sp
| Call the real address resolver.
jbsr _dl_profile_fixup
| Pop parameters
lea 28(%sp), %sp
move.l (%sp), %d1
jpl 1f
addq.l #4, %sp
| Restore register %a0 and %a1.
move.l (%sp)+, %a0
move.l (%sp)+, %a1
lea 12(%sp), %sp
| Call real function.
jmp (%d0)
/*
+24 return address
+20 PLT1
+16 PLT2
+12 %sp
+8 %a1
+4 %a0
%sp free
*/
1: move.l %a2, (%sp)
move.l %sp, %a2
move.l %sp, %a0
lea 28(%sp), %a1
| Round framesize up to even
addq.l #1, %d1
lsr #1, %d1
sub.l %d1, %a0
sub.l %d1, %a0
move.l %a0, %sp
jra 2f
1: move.w (%a1)+, (%a0)+
2: dbra %d1,1b
/*
%a2+24 return address
%a2+20 PLT1
%a2+16 PLT2
%a2+12 %sp
%a2+8 %a1
%a2+4 %a0
%a2 %a2
%sp copied stack frame
*/
move.l 4(%a2), %a0
move.l 8(%a2), %a1
jsr (%d0)
move.l %a2, %sp
move.l (%sp)+, %a2
/*
+20 return address
+16 PLT1
+12 PLT2
+8 %sp
+4 %a1
%sp %a0
*/
fmove.x %fp0, -(%sp)
move.l %d1, -(%sp)
move.l %d0, -(%sp)
pea (%sp)
pea 20(%sp)
move.l 40(%sp), -(%sp)
move.l 40(%sp), -(%sp)
jbsr _dl_call_pltexit
lea 16(%sp), %sp
move.l (%sp)+, %d0
move.l (%sp)+, %d1
fmove.x (%sp)+, %fp0
lea 20(%sp), %sp
rts
.size _dl_runtime_profile, . - _dl_runtime_profile