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-rw-r--r--sysdeps/generic/ldsodefs.h9
-rw-r--r--sysdeps/m68k/bits/link.h58
-rw-r--r--sysdeps/m68k/dl-machine.h49
-rw-r--r--sysdeps/m68k/dl-trampoline.S129
4 files changed, 211 insertions, 34 deletions
diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
index e4024419e3..6daa5d4ee5 100644
--- a/sysdeps/generic/ldsodefs.h
+++ b/sysdeps/generic/ldsodefs.h
@@ -185,6 +185,8 @@ struct La_ppc64_regs;
 struct La_ppc64_retval;
 struct La_sh_regs;
 struct La_sh_retval;
+struct La_m68k_regs;
+struct La_m68k_retval;
 
 
 struct audit_ifaces
@@ -222,6 +224,10 @@ struct audit_ifaces
 				  uintptr_t *, const struct La_sh_regs *,
 				  unsigned int *, const char *name,
 				  long int *framesizep);
+    Elf32_Addr (*m68k_gnu_pltenter) (Elf32_Sym *, unsigned int, uintptr_t *,
+				     uintptr_t *, struct La_m68k_regs *,
+				     unsigned int *, const char *name,
+				     long int *framesizep);
   };
   union
   {
@@ -244,6 +250,9 @@ struct audit_ifaces
     unsigned int (*sh_gnu_pltexit) (Elf32_Sym *, unsigned int, uintptr_t *,
 				    uintptr_t *, const struct La_sh_regs *,
 				    struct La_sh_retval *, const char *);
+    unsigned int (*m68k_gnu_pltexit) (Elf32_Sym *, unsigned int, uintptr_t *,
+				      uintptr_t *, const struct La_m68k_regs *,
+				      struct La_m68k_retval *, const char *);
   };
   unsigned int (*objclose) (uintptr_t *);
 
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
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-12-17 07:03:45 +0000