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authorUlrich Drepper <drepper@redhat.com>2005-01-07 23:14:21 +0000
committerUlrich Drepper <drepper@redhat.com>2005-01-07 23:14:21 +0000
commit2413fdba7a02ba8916f75d17199a6e9133a8f7b0 (patch)
treecf40b3f04dc99bbdb0559858b7c98298e69768db /sysdeps/powerpc/powerpc32/dl-trampoline.S
parentae7f5313dfb6c9df557d3904a22ac74d3347eed1 (diff)
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Update.
	* sysdeps/powerpc/powerpc64/dl-trampoline.S: Use register names.

	* sysdeps/powerpc/powerpc32/dl-trampoline.S: New file.
	* sysdeps/powerpc/powerpc32/dl-machine.h: Remove trampoline code here.
	Define ARCH_LA_PLTENTER and ARCH_LA_PLTEXIT.
	* sysdeps/generic/ldsodefs.h (struct audit_ifaces): Add ppc32 variants.
	* elf/tst-auditmod1.c: Add ppc32 support.
	* sysdeps/powerpc/powerpc32/bits/link.h: New file.
	* sysdeps/powerpc/powerpc64/bits/link.h: Add ppc32 definitions.
Diffstat (limited to 'sysdeps/powerpc/powerpc32/dl-trampoline.S')
-rw-r--r--sysdeps/powerpc/powerpc32/dl-trampoline.S113
1 files changed, 113 insertions, 0 deletions
diff --git a/sysdeps/powerpc/powerpc32/dl-trampoline.S b/sysdeps/powerpc/powerpc32/dl-trampoline.S
new file mode 100644
index 0000000000..5585192ea8
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/dl-trampoline.S
@@ -0,0 +1,113 @@
+/* PLT trampolines.  PPC32 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>
+
+	.section ".text"
+	.align 2
+	.globl _dl_runtime_resolve
+	.type _dl_runtime_resolve,@function
+_dl_runtime_resolve:
+ # We need to save the registers used to pass parameters, and register 0,
+ # which is used by _mcount; the registers are saved in a stack frame.
+	stwu 1,-64(1)
+	stw 0,12(1)
+	stw 3,16(1)
+	stw 4,20(1)
+ # The code that calls this has put parameters for `fixup' in r12 and r11.
+	mr 3,12
+	stw 5,24(1)
+	mr 4,11
+	stw 6,28(1)
+	mflr 0
+ # We also need to save some of the condition register fields
+	stw 7,32(1)
+	stw 0,48(1)
+	stw 8,36(1)
+	mfcr 0
+	stw 9,40(1)
+	stw 10,44(1)
+	stw 0,8(1)
+	bl _dl_fixup@local
+ # 'fixup' returns the address we want to branch to.
+	mtctr 3
+ # Put the registers back...
+	lwz 0,48(1)
+	lwz 10,44(1)
+	lwz 9,40(1)
+	mtlr 0
+	lwz 8,36(1)
+	lwz 0,8(1)
+	lwz 7,32(1)
+	lwz 6,28(1)
+	mtcrf 0xFF,0
+	lwz 5,24(1)
+	lwz 4,20(1)
+	lwz 3,16(1)
+	lwz 0,12(1)
+ # ...unwind the stack frame, and jump to the PLT entry we updated.
+	addi 1,1,64
+	bctr
+	.size	 _dl_runtime_resolve,.-_dl_runtime_resolve
+
+	.align 2
+	.globl _dl_prof_resolve
+	.type _dl_prof_resolve,@function
+_dl_prof_resolve:
+ # We need to save the registers used to pass parameters, and register 0,
+ # which is used by _mcount; the registers are saved in a stack frame.
+	stwu 1,-64(1)
+        stw 0,12(1)
+	stw 3,16(1)
+	stw 4,20(1)
+ # The code that calls this has put parameters for `fixup' in r12 and r11.
+	mr 3,12
+	stw 5,24(1)
+	mr 4,11
+	stw 6,28(1)
+	mflr 5
+ # We also need to save some of the condition register fields.
+	stw 7,32(1)
+	stw 5,48(1)
+	stw 8,36(1)
+	mfcr 0
+	stw 9,40(1)
+	stw 10,44(1)
+	stw 0,8(1)
+	bl _dl_profile_fixup@local
+ # 'fixup' returns the address we want to branch to.
+	mtctr 3
+ # Put the registers back...
+	lwz 0,48(1)
+	lwz 10,44(1)
+	lwz 9,40(1)
+	mtlr 0
+	lwz 8,36(1)
+	lwz 0,8(1)
+	lwz 7,32(1)
+	lwz 6,28(1)
+	mtcrf 0xFF,0
+	lwz 5,24(1)
+	lwz 4,20(1)
+	lwz 3,16(1)
+        lwz 0,12(1)
+ # ...unwind the stack frame, and jump to the PLT entry we updated.
+	addi 1,1,64
+	bctr
+	.size	 _dl_prof_resolve,.-_dl_prof_resolve