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-rw-r--r--sys/arch/arm/include/profile.h107
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diff --git a/sys/arch/arm/include/profile.h b/sys/arch/arm/include/profile.h
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+/* $OpenBSD: profile.h,v 1.1 2004/02/01 05:09:49 drahn Exp $ */
+/* $NetBSD: profile.h,v 1.5 2002/03/24 15:49:40 bjh21 Exp $ */
+
+/*
+ * Copyright (c) 2001 Ben Harris
+ * Copyright (c) 1995-1996 Mark Brinicombe
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by Mark Brinicombe.
+ * 4. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#define _MCOUNT_DECL void _mcount
+
+/*
+ * Cannot implement mcount in C as GCC will trash the ip register when it
+ * pushes a trapframe. Pity we cannot insert assembly before the function
+ * prologue.
+ */
+
+#ifdef __ELF__
+#define MCOUNT_ASM_NAME "__mcount"
+#ifdef PIC
+#define PLTSYM "(PLT)"
+#endif
+#else
+#define MCOUNT_ASM_NAME "mcount"
+#endif
+
+#ifndef PLTSYM
+#define PLTSYM
+#endif
+
+#define MCOUNT \
+ __asm__(".text"); \
+ __asm__(".align 0"); \
+ __asm__(".type " MCOUNT_ASM_NAME ",%function"); \
+ __asm__(".global " MCOUNT_ASM_NAME); \
+ __asm__(MCOUNT_ASM_NAME ":"); \
+ /* \
+ * Preserve registers that are trashed during mcount \
+ */ \
+ __asm__("stmfd sp!, {r0-r3, ip, lr}"); \
+ /* Check what mode we're in. EQ => 32, NE => 26 */ \
+ __asm__("teq r0, r0"); \
+ __asm__("teq pc, r15"); \
+ /* \
+ * find the return address for mcount, \
+ * and the return address for mcount's caller. \
+ * \
+ * frompcindex = pc pushed by call into self. \
+ */ \
+ __asm__("moveq r0, ip"); \
+ __asm__("bicne r0, ip, #0xfc000003"); \
+ /* \
+ * selfpc = pc pushed by mcount call \
+ */ \
+ __asm__("moveq r1, lr"); \
+ __asm__("bicne r1, lr, #0xfc000003"); \
+ /* \
+ * Call the real mcount code \
+ */ \
+ __asm__("bl " __STRING(_mcount) PLTSYM); \
+ /* \
+ * Restore registers that were trashed during mcount \
+ */ \
+ __asm__("ldmfd sp!, {r0-r3, lr, pc}");
+
+#ifdef _KERNEL
+#ifdef __PROG26
+extern int int_off_save(void);
+extern void int_restore(int);
+#define MCOUNT_ENTER (s = int_off_save())
+#define MCOUNT_EXIT int_restore(s)
+#else
+#include <arm/cpufunc.h>
+/*
+ * splhigh() and splx() are heavyweight, and call mcount(). Therefore
+ * we disabled interrupts (IRQ, but not FIQ) directly on the CPU.
+ *
+ * We're lucky that the CPSR and 's' both happen to be 'int's.
+ */
+#define MCOUNT_ENTER s = __set_cpsr_c(0x0080, 0x0080); /* kill IRQ */
+#define MCOUNT_EXIT __set_cpsr_c(0xffffffff, s); /* restore old value */
+#endif /* !acorn26 */
+#endif /* _KERNEL */