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17f4cae4a5
implementation specific vs. the common architecture definition. Bring PPC4XX defines (PSL, SPR, TLB). Note the new definitions under BOOKE_PPC4XX are not used in the code yet. This change set is not supposed to affect existing E500 support, it's just another reorg step before bringing support for E500mc, E5500 and PPC465. Obtained from: AppliedMicro, Freescale, Semihalf
223 lines
6.0 KiB
C
223 lines
6.0 KiB
C
/*-
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* Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*
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* from: NetBSD: profile.h,v 1.9 1997/04/06 08:47:37 cgd Exp
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* from: FreeBSD: src/sys/alpha/include/profile.h,v 1.4 1999/12/29
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* $FreeBSD$
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*/
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#ifndef _MACHINE_PROFILE_H_
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#define _MACHINE_PROFILE_H_
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#define _MCOUNT_DECL void __mcount
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#define FUNCTION_ALIGNMENT 4
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typedef __ptrdiff_t fptrdiff_t;
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/*
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* The mcount trampoline macro, expanded in libc/gmon/mcount.c
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*
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* For PowerPC SVR4 ABI profiling, the compiler will insert
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* a data declaration and code sequence at the start of a routine of the form
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*
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* .function_mc: .data
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* .align 2
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* .long 0
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* .text
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*
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* function: mflr %r0
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* addis %r11,%r0, .function_mc@ha
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* stw %r0,4(%r1)
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* addi %r0,%r11, .function_mc@l
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* bl _mcount
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*
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* The link register is saved in the LR save word in the caller's
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* stack frame, r0 is set up to point to the allocated longword,
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* and control is transferred to _mcount.
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*
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* On return from _mcount, the routine should function as it would
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* with no profiling so _mcount must restore register state to that upon
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* entry. Any routine called by the _mcount trampoline will save
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* callee-save registers, so _mcount must make sure it saves volatile
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* registers that may have state after it returns i.e. parameter registers.
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*
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* The FreeBSD libc mcount routine ignores the r0 longword pointer, but
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* instead requires as parameters the current PC and called PC. The current
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* PC is obtained from the link register, as a result of "bl _mcount" in
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* the stub, while the caller's PC is obtained from the LR save word.
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*
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* On return from libc mcount, the return is done indirectly with the
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* ctr register rather than the link register, to allow the link register
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* to be restored to what it was on entry to the profiled routine.
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*/
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#ifdef __powerpc64__
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#define MCOUNT \
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__asm( " .text \n" \
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" .align 2 \n" \
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" .globl _mcount \n" \
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" .section \".opd\",\"aw\" \n" \
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" .align 3 \n" \
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"_mcount: \n" \
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" .quad .L._mcount,.TOC.@tocbase,0\n" \
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" .previous \n" \
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" .size _mcount,24 \n" \
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" .type _mcount,@function \n" \
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" .align 4 \n" \
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".L._mcount: \n" \
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" stdu %r1,-(288+128)(%r1) \n" \
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" std %r3,48(%r1) \n" \
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" std %r4,56(%r1) \n" \
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" std %r5,64(%r1) \n" \
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" std %r6,72(%r1) \n" \
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" std %r7,80(%r1) \n" \
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" std %r8,88(%r1) \n" \
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" std %r9,96(%r1) \n" \
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" std %r10,104(%r1) \n" \
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" mflr %r4 \n" \
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" std %r4,112(%r1) \n" \
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" ld %r3,0(%r1) \n" \
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" ld %r3,0(%r3) \n" \
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" ld %r3,16(%r3) \n" \
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" bl __mcount \n" \
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" nop \n" \
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" ld %r4,112(%r1) \n" \
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" mtlr %r4 \n" \
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" ld %r3,48(%r1) \n" \
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" ld %r4,56(%r1) \n" \
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" ld %r5,64(%r1) \n" \
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" ld %r6,72(%r1) \n" \
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" ld %r7,80(%r1) \n" \
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" ld %r8,88(%r1) \n" \
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" ld %r9,96(%r1) \n" \
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" ld %r10,104(%r1) \n" \
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" addi %r1,%r1,(288+128) \n" \
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" blr \n");
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#else
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#ifdef PIC
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#define _PLT "@plt"
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#else
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#define _PLT
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#endif
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#define MCOUNT \
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__asm( " .globl _mcount \n" \
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" .type _mcount,@function \n" \
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" .align 4 \n" \
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"_mcount: \n" \
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" stwu %r1,-64(%r1) \n" \
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" stw %r3,16(%r1) \n" \
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" stw %r4,20(%r1) \n" \
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" stw %r5,24(%r1) \n" \
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" stw %r6,28(%r1) \n" \
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" stw %r7,32(%r1) \n" \
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" stw %r8,36(%r1) \n" \
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" stw %r9,40(%r1) \n" \
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" stw %r10,44(%r1) \n" \
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" mflr %r4 \n" \
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" stw %r4,48(%r1) \n" \
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" lwz %r3,68(%r1) \n" \
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" bl __mcount" _PLT " \n" \
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" lwz %r3,68(%r1) \n" \
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" mtlr %r3 \n" \
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" lwz %r4,48(%r1) \n" \
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" mtctr %r4 \n" \
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" lwz %r3,16(%r1) \n" \
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" lwz %r4,20(%r1) \n" \
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" lwz %r5,24(%r1) \n" \
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" lwz %r6,28(%r1) \n" \
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" lwz %r7,32(%r1) \n" \
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" lwz %r8,36(%r1) \n" \
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" lwz %r9,40(%r1) \n" \
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" lwz %r10,44(%r1) \n" \
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" addi %r1,%r1,64 \n" \
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" bctr \n" \
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"_mcount_end: \n" \
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" .size _mcount,_mcount_end-_mcount");
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#endif
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#ifdef _KERNEL
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#define MCOUNT_ENTER(s) s = intr_disable()
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#define MCOUNT_EXIT(s) intr_restore(s)
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#define MCOUNT_DECL(s) register_t s;
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#ifndef COMPILING_LINT
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#ifdef AIM
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#include <machine/trap.h>
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#define __PROFILE_VECTOR_BASE EXC_RST
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#define __PROFILE_VECTOR_TOP (EXC_LAST + 0x100)
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#endif /* AIM */
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#if defined(BOOKE)
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extern char interrupt_vector_base[];
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extern char interrupt_vector_top[];
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#define __PROFILE_VECTOR_BASE (uintfptr_t)interrupt_vector_base
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#define __PROFILE_VECTOR_TOP (uintfptr_t)interrupt_vector_top
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#endif /* BOOKE_E500 || BOOKE_PPC4XX */
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#endif /* !COMPILING_LINT */
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#ifndef __PROFILE_VECTOR_BASE
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#define __PROFILE_VECTOR_BASE 0
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#endif
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#ifndef __PROFILE_VECTOR_TOP
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#define __PROFILE_VECTOR_TOP 1
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#endif
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static __inline void
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powerpc_profile_interrupt(void)
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{
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}
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static __inline void
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powerpc_profile_userspace(void)
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{
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}
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#define MCOUNT_FROMPC_USER(pc) \
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((pc < (uintfptr_t)VM_MAXUSER_ADDRESS) ? \
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(uintfptr_t)powerpc_profile_userspace : pc)
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#define MCOUNT_FROMPC_INTR(pc) \
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((pc >= __PROFILE_VECTOR_BASE && \
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pc < __PROFILE_VECTOR_TOP) ? \
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(uintfptr_t)powerpc_profile_interrupt : ~0U)
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void __mcount(uintfptr_t frompc, uintfptr_t selfpc);
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#else /* !_KERNEL */
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#ifdef __powerpc64__
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typedef u_long uintfptr_t;
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#else
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typedef u_int uintfptr_t;
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#endif
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#endif /* _KERNEL */
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#endif /* !_MACHINE_PROFILE_H_ */
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