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

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. 2005-01-16 Andreas Schwab <schwab@suse.de> * sysdeps/m68k/dl-machine.h: Remove trampoline code. Define 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.
2025-08-01 10:06:57 +03:00 · 2005-01-16 02:07:30 +00:00
parent ea16166114
commit b92f2d0423
6 changed files with 246 additions and 34 deletions
--- a/sysdeps/m68k/dl-trampoline.S
+++ 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