[uClibc-cvs] uClibc/libc/sysdeps/linux/powerpc mcount.S,NONE,1.1 Makefile,1.18,1.19 crt0.S,1.6,1.7
Erik Andersen
andersen at codepoet.org
Thu Mar 6 15:03:36 UTC 2003
Update of /var/cvs/uClibc/libc/sysdeps/linux/powerpc
In directory winder:/tmp/cvs-serv29435
Modified Files:
Makefile crt0.S
Added Files:
mcount.S
Log Message:
Finish off gmon based profiling for powerpc
--- NEW FILE: mcount.S ---
/* PowerPC-specific implementation of profiling support.
Copyright (C) 1997, 1999 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 <features.h>
#include "ppc_asm.h"
/* This would be bad. */
#ifdef PROF
#undef PROF
#endif
/* We do profiling as described in the SYSV ELF ABI, _mcount is called
with the address of a data word in r0 (that is different for every
routine, initialised to 0, and otherwise unused). The caller has put
the address the caller will return to in the usual place on the stack,
4(r1). _mcount is responsible for ensuring that when it returns no
argument-passing registers are disturbed, and that the LR is set back
to (what the caller sees as) 4(r1).
This is intended so that the following code can be inserted at the
front of any routine without changing the routine:
.data
.align 2
0: .long 0
.previous
mflr r0
lis r11,0b at ha
stw r0,4(r1)
addi r0,r11,0b at l
bl _mcount
*/
.globl _mcount;
.type _mcount, @function;
.align 2;
_mcount:
stwu r1,-48(r1)
/* We need to save the parameter-passing registers. */
stw r3, 12(r1)
stw r4, 16(r1)
stw r5, 20(r1)
stw r6, 24(r1)
mflr r4
lwz r3, 52(r1)
mfcr r5
stw r7, 28(r1)
stw r8, 32(r1)
stw r9, 36(r1)
stw r10,40(r1)
stw r4, 44(r1)
stw r5, 8(r1)
#ifdef PIC
bl __mcount_internal at plt
#else
bl __mcount_internal
#endif
nop
/* Restore the registers... */
lwz r6, 8(r1)
lwz r0, 44(r1)
lwz r3, 12(r1)
mtctr r0
lwz r4, 16(r1)
mtcrf 0xff,r6
lwz r5, 20(r1)
lwz r6, 24(r1)
lwz r0, 52(r1)
lwz r7, 28(r1)
lwz r8, 32(r1)
mtlr r0
lwz r9, 36(r1)
lwz r10,40(r1)
/* ...unwind the stack frame, and return to your usual programming. */
addi r1,r1,48
bctr
.size _mcount,.-_mcount;
#undef mcount
.weak mcount ; mcount = _mcount
Index: Makefile
===================================================================
RCS file: /var/cvs/uClibc/libc/sysdeps/linux/powerpc/Makefile,v
retrieving revision 1.18
retrieving revision 1.19
diff -u -d -r1.18 -r1.19
--- Makefile 18 Feb 2003 05:48:07 -0000 1.18
+++ Makefile 6 Mar 2003 15:03:33 -0000 1.19
@@ -21,9 +21,13 @@
ASFLAGS=$(CFLAGS)
CRT0_SRC = crt0.S
-CRT0_OBJ = crt0.o crt1.o
+CRT0_OBJ = crt0.o crt1.o gcrt1.o
+CRT0_DEPS=gmon-start.S
SSRC=__longjmp.S setjmp.S bsd-setjmp.S bsd-_setjmp.S brk.S clone.S __uClibc_syscall.S
+ifeq ($(strip $(UCLIBC_PROFILING)),y)
+SSRC+=mcount.S
+endif
SOBJS=$(patsubst %.S,%.o, $(SSRC))
CSRC=_mmap.c vfork.c __syscall_error.c pread_write.c ioctl.c
@@ -51,6 +55,13 @@
$(COBJS): %.o : %.c
$(CC) $(CFLAGS) -c $< -o $@
$(STRIPTOOL) -x -R .note -R .comment $*.o
+
+ifeq ($(strip $(UCLIBC_PROFILING)),y)
+SAFECFLAGS := $(subst -g,,$(CFLAGS))
+gmon-start.S: ../common/gmon-start.c
+ $(CC) $(SAFECFLAGS) -c $< -S -o $*.S
+gcrt1.o: $(CRT0_DEPS)
+endif
headers:
Index: crt0.S
===================================================================
RCS file: /var/cvs/uClibc/libc/sysdeps/linux/powerpc/crt0.S,v
retrieving revision 1.6
retrieving revision 1.7
diff -u -d -r1.6 -r1.7
--- crt0.S 23 Jan 2003 13:17:42 -0000 1.6
+++ crt0.S 6 Mar 2003 15:03:33 -0000 1.7
@@ -68,18 +68,23 @@
add r5,r5,r4
/* Ok, now run uClibc's main() -- shouldn't return */
-#if defined L_crt0 || ! defined __UCLIBC_CTOR_DTOR__
- bl __uClibc_main
-#else
+#if (defined L_crt1 || defined L_gcrt1 ) && defined __UCLIBC_CTOR_DTOR__
lis r6,_init at ha # load top 16 bits
addi r6,r6,_init at l # load bottom 16 bits
lis r7,_fini at ha # load top 16 bits of &msg
addi r7,r7,_fini at l # load bottom 16 bits
bl __uClibc_start_main
+#else
+ bl __uClibc_main
#endif
.size _start,.-_start
.section ".data"
.globl __data_start
__data_start:
+
+#if defined L_gcrt1 && defined __UCLIBC_PROFILING__
+# include "./gmon-start.S"
+#endif
+
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