This is the mail archive of the
libc-alpha@sources.redhat.com
mailing list for the glibc project.
Re: mips64 profiling support
On Mar 15, 2003, Andreas Jaeger <aj at suse dot de> wrote:
> Alexandre Oliva <aoliva at redhat dot com> writes:
>> /* Call __mcount with our the return PC for our caller,
>> and the return PC our caller will return to. */
> While you're at it, please correct the above comment - and also the
> copy of it that you did. The sentence does not make sense.
Indeed, thanks for catching this. This is what I've just checked in:
Index: ChangeLog
from Alexandre Oliva <aoliva at redhat dot com>
* sysdeps/mips/machine-gmon.h (MCOUNT): Define for N32 and N64 as
well.
2003-03-17 Alexandre Oliva <aoliva at redhat dot com>
Index: sysdeps/mips/machine-gmon.h
===================================================================
RCS file: /cvs/glibc/libc/sysdeps/mips/machine-gmon.h,v
retrieving revision 1.6
diff -u -p -r1.6 machine-gmon.h
--- sysdeps/mips/machine-gmon.h 11 Feb 2002 10:23:36 -0000 1.6
+++ sysdeps/mips/machine-gmon.h 17 Mar 2003 15:52:52 -0000
@@ -1,5 +1,6 @@
/* Machine-specific calling sequence for `mcount' profiling function. MIPS
- Copyright (C) 1996, 1997, 2000, 2001, 2002 Free Software Foundation, Inc.
+ Copyright (C) 1996, 1997, 2000, 2001, 2002, 2003
+ 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
@@ -20,14 +21,17 @@
#define _MCOUNT_DECL(frompc,selfpc) \
static void __attribute_used__ __mcount (u_long frompc, u_long selfpc)
-/* Call __mcount with our the return PC for our caller,
+/* Call __mcount with the return PC for our caller,
and the return PC our caller will return to. */
+
+#if _MIPS_SIM == _MIPS_SIM_ABI32
+
#ifdef __PIC__
-#define CPLOAD ".cpload $25;"
-#define CPRESTORE ".cprestore 44\n\t"
+# define CPLOAD ".cpload $25;"
+# define CPRESTORE ".cprestore 44\n\t"
#else
-#define CPLOAD
-#define CPRESTORE
+# define CPLOAD
+# define CPRESTORE
#endif
#define MCOUNT asm(\
@@ -66,3 +70,70 @@ static void __attribute_used__ __mcount
".set reorder;\n\t" \
".set at\n\t" \
".end _mcount");
+
+#else
+
+#ifdef __PIC__
+# define CPSETUP ".cpsetup $25, 88, _mcount;"
+# define CPRETURN ".cpreturn;"
+#else
+# define CPSETUP
+# define CPRETURN
+#endif
+
+#if defined _ABIN32 && _MIPS_SIM == _ABIN32
+# define PTR_ADDU_STRING "add" /* no u */
+# define PTR_SUBU_STRING "sub" /* no u */
+#elif defined _ABI64 && _MIPS_SIM == _ABI64
+# define PTR_ADDU_STRING "daddu"
+# define PTR_SUBU_STRING "dsubu"
+#else
+# error "Unknown ABI"
+#endif
+
+#define MCOUNT asm(\
+ ".globl _mcount;\n\t" \
+ ".align 3;\n\t" \
+ ".type _mcount,@function;\n\t" \
+ ".ent _mcount\n\t" \
+ "_mcount:\n\t" \
+ ".frame $sp,88,$31\n\t" \
+ ".set noreorder;\n\t" \
+ ".set noat;\n\t" \
+ PTR_SUBU_STRING " $29,$29,96;\n\t" \
+ CPSETUP \
+ "sd $4,24($29);\n\t" \
+ "sd $5,32($29);\n\t" \
+ "sd $6,40($29);\n\t" \
+ "sd $7,48($29);\n\t" \
+ "sd $8,56($29);\n\t" \
+ "sd $9,64($29);\n\t" \
+ "sd $10,72($29);\n\t" \
+ "sd $11,80($29);\n\t" \
+ "sd $2,16($29);\n\t" \
+ "sd $1,0($29);\n\t" \
+ "sd $31,8($29);\n\t" \
+ "move $5,$31;\n\t" \
+ "move $4,$1;\n\t" \
+ "jal __mcount;\n\t" \
+ "nop;\n\t" \
+ "ld $4,24($29);\n\t" \
+ "ld $5,32($29);\n\t" \
+ "ld $6,40($29);\n\t" \
+ "ld $7,48($29);\n\t" \
+ "ld $8,56($29);\n\t" \
+ "ld $9,64($29);\n\t" \
+ "ld $10,72($29);\n\t" \
+ "ld $11,80($29);\n\t" \
+ "ld $2,16($29);\n\t" \
+ "ld $31,8($29);\n\t" \
+ "ld $1,0($29);\n\t" \
+ CPRETURN \
+ PTR_ADDU_STRING " $29,$29,96;\n\t" \
+ "j $31;\n\t" \
+ "move $31,$1;\n\t" \
+ ".set reorder;\n\t" \
+ ".set at\n\t" \
+ ".end _mcount");
+
+#endif
--
Alexandre Oliva Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer aoliva at {redhat dot com, gcc.gnu.org}
CS PhD student at IC-Unicamp oliva at {lsd dot ic dot unicamp dot br, gnu.org}
Free Software Evangelist Professional serial bug killer