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-rw-r--r--sysdeps/m68k/bits/link.h58
-rw-r--r--sysdeps/m68k/dl-machine.h49
-rw-r--r--sysdeps/m68k/dl-trampoline.S129
3 files changed, 202 insertions, 34 deletions
diff --git a/sysdeps/m68k/bits/link.h b/sysdeps/m68k/bits/link.h
new file mode 100644
index 0000000000..9d0a94592f
--- /dev/null
+++ b/sysdeps/m68k/bits/link.h
@@ -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
diff --git a/sysdeps/m68k/dl-machine.h b/sysdeps/m68k/dl-machine.h
index 146c5866a9..89d7106365 100644
--- a/sysdeps/m68k/dl-machine.h
+++ b/sysdeps/m68k/dl-machine.h
@@ -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 */
diff --git a/sysdeps/m68k/dl-trampoline.S b/sysdeps/m68k/dl-trampoline.S
new file mode 100644
index 0000000000..8791280371
--- /dev/null
+++ b/sysdeps/m68k/dl-trampoline.S
@@ -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
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