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- /*-
- * SPDX-License-Identifier: MIT-CMU
- *
- * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
- * All rights reserved.
- *
- * Author: Chris G. Demetriou
- *
- * Permission to use, copy, modify and distribute this software and
- * its documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- *
- * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
- * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
- * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * Carnegie Mellon requests users of this software to return to
- *
- * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
- * School of Computer Science
- * Carnegie Mellon University
- * Pittsburgh PA 15213-3890
- *
- * any improvements or extensions that they make and grant Carnegie the
- * rights to redistribute these changes.
- *
- * from: NetBSD: profile.h,v 1.9 1997/04/06 08:47:37 cgd Exp
- * from: FreeBSD: src/sys/alpha/include/profile.h,v 1.4 1999/12/29
- * $FreeBSD$
- */
- #ifndef _MACHINE_PROFILE_H_
- #define _MACHINE_PROFILE_H_
- #define _MCOUNT_DECL void __mcount
- #define FUNCTION_ALIGNMENT 4
- typedef __ptrdiff_t fptrdiff_t;
- /*
- * The mcount trampoline macro, expanded in libc/gmon/mcount.c
- *
- * For PowerPC SVR4 ABI profiling, the compiler will insert
- * a data declaration and code sequence at the start of a routine of the form
- *
- * .function_mc: .data
- * .align 2
- * .long 0
- * .text
- *
- * function: mflr %r0
- * addis %r11,%r0, .function_mc@ha
- * stw %r0,4(%r1)
- * addi %r0,%r11, .function_mc@l
- * bl _mcount
- *
- * The link register is saved in the LR save word in the caller's
- * stack frame, r0 is set up to point to the allocated longword,
- * and control is transferred to _mcount.
- *
- * On return from _mcount, the routine should function as it would
- * with no profiling so _mcount must restore register state to that upon
- * entry. Any routine called by the _mcount trampoline will save
- * callee-save registers, so _mcount must make sure it saves volatile
- * registers that may have state after it returns i.e. parameter registers.
- *
- * The FreeBSD libc mcount routine ignores the r0 longword pointer, but
- * instead requires as parameters the current PC and called PC. The current
- * PC is obtained from the link register, as a result of "bl _mcount" in
- * the stub, while the caller's PC is obtained from the LR save word.
- *
- * On return from libc mcount, the return is done indirectly with the
- * ctr register rather than the link register, to allow the link register
- * to be restored to what it was on entry to the profiled routine.
- */
- #if defined(__powerpc64__)
- #if !defined(_CALL_ELF) || _CALL_ELF == 1
- #define MCOUNT_PREAMBLE \
- " .align 2 \n" \
- " .globl _mcount \n" \
- " .section \".opd\",\"aw\" \n" \
- " .align 3 \n" \
- "_mcount: \n" \
- " .quad .L._mcount,.TOC.@tocbase,0\n" \
- " .previous \n" \
- " .size _mcount,24 \n" \
- " .type _mcount,@function \n" \
- " .align 4 \n" \
- ".L._mcount: \n"
- #else
- #define MCOUNT_PREAMBLE \
- " .globl _mcount \n" \
- " .type _mcount,@function \n" \
- " .align 4 \n" \
- "_mcount: \n"
- #endif
- #define MCOUNT \
- __asm( MCOUNT_PREAMBLE \
- " stdu %r1,-(288+128)(%r1) \n" \
- " std %r3,48(%r1) \n" \
- " std %r4,56(%r1) \n" \
- " std %r5,64(%r1) \n" \
- " std %r6,72(%r1) \n" \
- " std %r7,80(%r1) \n" \
- " std %r8,88(%r1) \n" \
- " std %r9,96(%r1) \n" \
- " std %r10,104(%r1) \n" \
- " mflr %r4 \n" \
- " std %r4,112(%r1) \n" \
- " ld %r3,0(%r1) \n" \
- " ld %r3,0(%r3) \n" \
- " ld %r3,16(%r3) \n" \
- " bl __mcount \n" \
- " nop \n" \
- " ld %r4,112(%r1) \n" \
- " mtlr %r4 \n" \
- " ld %r3,48(%r1) \n" \
- " ld %r4,56(%r1) \n" \
- " ld %r5,64(%r1) \n" \
- " ld %r6,72(%r1) \n" \
- " ld %r7,80(%r1) \n" \
- " ld %r8,88(%r1) \n" \
- " ld %r9,96(%r1) \n" \
- " ld %r10,104(%r1) \n" \
- " addi %r1,%r1,(288+128) \n" \
- " blr \n");
- #else
- #ifdef PIC
- #define _PLT "@plt"
- #else
- #define _PLT
- #endif
- #define MCOUNT \
- __asm( " .globl _mcount \n" \
- " .type _mcount,@function \n" \
- " .align 4 \n" \
- "_mcount: \n" \
- " stwu %r1,-64(%r1) \n" \
- " stw %r3,16(%r1) \n" \
- " stw %r4,20(%r1) \n" \
- " stw %r5,24(%r1) \n" \
- " stw %r6,28(%r1) \n" \
- " stw %r7,32(%r1) \n" \
- " stw %r8,36(%r1) \n" \
- " stw %r9,40(%r1) \n" \
- " stw %r10,44(%r1) \n" \
- " mflr %r4 \n" \
- " stw %r4,48(%r1) \n" \
- " lwz %r3,68(%r1) \n" \
- " bl __mcount" _PLT " \n" \
- " lwz %r3,68(%r1) \n" \
- " mtlr %r3 \n" \
- " lwz %r4,48(%r1) \n" \
- " mtctr %r4 \n" \
- " lwz %r3,16(%r1) \n" \
- " lwz %r4,20(%r1) \n" \
- " lwz %r5,24(%r1) \n" \
- " lwz %r6,28(%r1) \n" \
- " lwz %r7,32(%r1) \n" \
- " lwz %r8,36(%r1) \n" \
- " lwz %r9,40(%r1) \n" \
- " lwz %r10,44(%r1) \n" \
- " addi %r1,%r1,64 \n" \
- " bctr \n" \
- "_mcount_end: \n" \
- " .size _mcount,_mcount_end-_mcount");
- #endif
- #ifdef _KERNEL
- #define MCOUNT_ENTER(s) s = intr_disable()
- #define MCOUNT_EXIT(s) intr_restore(s)
- #define MCOUNT_DECL(s) register_t s;
- #ifndef COMPILING_LINT
- #ifdef AIM
- #include <machine/trap.h>
- #define __PROFILE_VECTOR_BASE EXC_RST
- #define __PROFILE_VECTOR_TOP (EXC_LAST + 0x100)
- #endif /* AIM */
- #if defined(BOOKE)
- extern char interrupt_vector_base[];
- extern char interrupt_vector_top[];
- #define __PROFILE_VECTOR_BASE (uintfptr_t)interrupt_vector_base
- #define __PROFILE_VECTOR_TOP (uintfptr_t)interrupt_vector_top
- #endif /* BOOKE_E500 */
- #endif /* !COMPILING_LINT */
- #ifndef __PROFILE_VECTOR_BASE
- #define __PROFILE_VECTOR_BASE 0
- #endif
- #ifndef __PROFILE_VECTOR_TOP
- #define __PROFILE_VECTOR_TOP 1
- #endif
- static __inline void
- powerpc_profile_interrupt(void)
- {
- }
- static __inline void
- powerpc_profile_userspace(void)
- {
- }
- #define MCOUNT_FROMPC_USER(pc) \
- ((pc < (uintfptr_t)VM_MAXUSER_ADDRESS) ? \
- (uintfptr_t)powerpc_profile_userspace : pc)
- #define MCOUNT_FROMPC_INTR(pc) \
- ((pc >= __PROFILE_VECTOR_BASE && \
- pc < __PROFILE_VECTOR_TOP) ? \
- (uintfptr_t)powerpc_profile_interrupt : ~0U)
- void __mcount(uintfptr_t frompc, uintfptr_t selfpc);
- #else /* !_KERNEL */
- #ifdef __powerpc64__
- typedef u_long uintfptr_t;
- #else
- typedef u_int uintfptr_t;
- #endif
- #endif /* _KERNEL */
- #endif /* !_MACHINE_PROFILE_H_ */
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