2.5-18.1

1 files changed, 184 insertions, 0 deletions

diff --git a/sysdeps/sparc/sparc32/dl-trampoline.S b/sysdeps/sparc/sparc32/dl-trampoline.S
new file mode 100644
index 0000000000..b0f86dda4e
--- /dev/null
+++ b/sysdeps/sparc/sparc32/dl-trampoline.S
@@ -0,0 +1,184 @@
+/* PLT trampolines.  Sparc 32-bit 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
+	.align	32
+
+	/* %g1:	PLT offset loaded by PLT entry
+	 * %g2: callers PC, which is PLT0 + 4, and we store the
+	 *      link map at PLT0 + 12, therefore we add 8 to get
+	 *      the address of the link map
+	 */
+	.globl	_dl_runtime_resolve
+	.type	_dl_runtime_resolve, @function
+_dl_runtime_resolve:
+	cfi_startproc
+
+	save	%sp, -104, %sp
+	cfi_def_cfa_register(%fp)
+	cfi_window_save
+	cfi_register (%o7, %i7)
+
+	ld	[%g2 + 8], %o0
+	srl	%g1, 10, %o1
+	call	_dl_fixup
+	 sub	%o1, 4*12, %o1
+	jmp	%o0
+	 restore
+
+	cfi_endproc
+
+	.size	_dl_runtime_resolve, .-_dl_runtime_resolve
+
+	/* For the profiling cases we pass in our stack frame
+	 * as the base of the La_sparc64_regs, so it looks
+	 * like:
+	 *	%l0			%sp
+	 *	...
+	 *	%l7			%sp + (7 * 8)
+	 *	%i0			%sp + (8 * 8)
+	 *	...
+	 *	%i7			%sp + (15 * 8)
+	 *	%f0			%sp + (16 * 8)
+	 *	%f16			%sp + (31 * 8)
+	 *	framesize		%sp + (32 * 8)
+	 */
+
+	.globl	_dl_profile_save_regs
+	.type	_dl_profile_save_regs, @function
+_dl_profile_save_regs:
+	cfi_startproc
+
+	std	%l0, [%sp + ( 0 * 8)]
+	std	%l2, [%sp + ( 1 * 8)]
+	std	%l4, [%sp + ( 2 * 8)]
+	std	%l6, [%sp + ( 3 * 8)]
+	std	%i0, [%sp + ( 4 * 8)]
+	std	%i2, [%sp + ( 5 * 8)]
+	std	%i4, [%sp + ( 6 * 8)]
+	std	%i6, [%sp + ( 7 * 8)]
+	ld	[%sp + (8 * 8)], %l4
+	retl
+	 st	%l4, [%sp + (8 * 8)]
+
+	cfi_endproc
+
+	.size	_dl_profile_save_regs, .-_dl_profile_save_regs
+
+	/* If we are going to call pltexit, then we must replicate
+	 * the caller's stack frame.
+	 * %o0: PLT resolved function address
+	 */
+	.globl	_dl_profile_invoke
+	.type	_dl_profile_invoke, @function
+_dl_profile_invoke:
+	cfi_startproc
+
+	sub	%sp, %l0, %sp
+1:
+	srl	%l0, 3, %l7
+	mov	%o0, %l1
+	mov	%i0, %o0
+	mov	%i1, %o1
+	mov	%i2, %o2
+	mov	%i3, %o3
+	mov	%i4, %o4
+	mov	%i5, %o5
+	mov	%fp, %l2
+	mov	%sp, %l3
+1:	ldd	[%l2], %g2
+	add	%l2, 0x8, %l2
+	subcc	%l7, 1, %l7
+	std	%g2, [%l3]
+	bne	1b
+	 add	%l3, 0x8, %l3
+
+	jmpl	%l1, %o7
+	 nop
+
+	std	%o0, [%sp + ( 9 * 8)]
+	std	%f0, [%sp + (10 * 8)]
+
+	mov	%l5, %o0
+	mov	%l6, %o1
+	add	%sp, %l0, %o2
+	call	_dl_call_pltexit
+	 add	%sp, (16 * 8), %o3
+
+	ldd	[%sp + (9 * 8)], %i0
+
+	jmpl	%i7 + 8, %g0
+	 restore
+
+	cfi_endproc
+
+	.size	_dl_profile_invoke, .-_dl_profile_invoke
+
+	/* %g1:	PLT offset loaded by PLT entry
+	 * %g2: callers PC, which is PLT0 + 4, and we store the
+	 *      link map at PLT0 + 12, therefore we add 8 to get
+	 *      the address of the link map
+	 */
+	.align	32
+	.globl	_dl_runtime_profile
+	.type	_dl_runtime_profile, @function
+_dl_runtime_profile:
+	cfi_startproc
+
+	cmp	%fp, 0
+	be,a	1f
+	 mov	104, %g3
+	sub	%fp, %sp, %g3
+1:	save	%sp, -104, %sp
+	cfi_def_cfa_register(%fp)
+	cfi_window_save
+	cfi_register(%o7, %i7)
+
+	ld	[%g2 + 8], %o0
+	srl	%g1, 10, %o1
+	mov	%i7, %o2
+	sub	%o1, 4*12, %o1
+
+	mov	%g3, %l0
+	mov	%o0, %l5
+	mov	%o1, %l6
+
+	call _dl_profile_save_regs
+	 nop
+
+	mov	%sp, %o3
+	call	_dl_profile_fixup
+	 add	%sp, (9 * 8), %o4
+
+	ld	[%sp + (9 * 8)], %o1
+	cmp	%o1, 0
+	bgeu	1f
+	 nop
+	
+	call	_dl_profile_invoke
+	 nop
+
+1:	jmp	%o0
+	 restore
+
+	cfi_endproc
+
+	.size	_dl_runtime_profile, .-_dl_runtime_profile