1139825Simp/*- 2109481Sgrehan * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University. 3109481Sgrehan * All rights reserved. 4109481Sgrehan * 5109481Sgrehan * Author: Chris G. Demetriou 6109481Sgrehan * 7109481Sgrehan * Permission to use, copy, modify and distribute this software and 8109481Sgrehan * its documentation is hereby granted, provided that both the copyright 9109481Sgrehan * notice and this permission notice appear in all copies of the 10109481Sgrehan * software, derivative works or modified versions, and any portions 11109481Sgrehan * thereof, and that both notices appear in supporting documentation. 12109481Sgrehan * 13109481Sgrehan * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 14109481Sgrehan * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 15109481Sgrehan * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 16109481Sgrehan * 17109481Sgrehan * Carnegie Mellon requests users of this software to return to 18109481Sgrehan * 19109481Sgrehan * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 20109481Sgrehan * School of Computer Science 21109481Sgrehan * Carnegie Mellon University 22109481Sgrehan * Pittsburgh PA 15213-3890 23109481Sgrehan * 24109481Sgrehan * any improvements or extensions that they make and grant Carnegie the 25109481Sgrehan * rights to redistribute these changes. 26109481Sgrehan * 27109481Sgrehan * from: NetBSD: profile.h,v 1.9 1997/04/06 08:47:37 cgd Exp 28109481Sgrehan * from: FreeBSD: src/sys/alpha/include/profile.h,v 1.4 1999/12/29 29109481Sgrehan * $FreeBSD$ 30109481Sgrehan */ 31109481Sgrehan 32109481Sgrehan#ifndef _MACHINE_PROFILE_H_ 33109481Sgrehan#define _MACHINE_PROFILE_H_ 34109481Sgrehan 35153813Sgrehan#define _MCOUNT_DECL void __mcount 36109481Sgrehan 37209591Smarcel#define FUNCTION_ALIGNMENT 4 38109481Sgrehan 39209975Snwhitehorntypedef __ptrdiff_t fptrdiff_t; 40109481Sgrehan 41153813Sgrehan/* 42153813Sgrehan * The mcount trampoline macro, expanded in libc/gmon/mcount.c 43153813Sgrehan * 44153813Sgrehan * For PowerPC SVR4 ABI profiling, the compiler will insert 45153813Sgrehan * a data declaration and code sequence at the start of a routine of the form 46153813Sgrehan * 47153813Sgrehan * .function_mc: .data 48153813Sgrehan * .align 2 49153813Sgrehan * .long 0 50153813Sgrehan * .text 51153813Sgrehan * 52153813Sgrehan * function: mflr %r0 53153813Sgrehan * addis %r11,%r0, .function_mc@ha 54153813Sgrehan * stw %r0,4(%r1) 55153813Sgrehan * addi %r0,%r11, .function_mc@l 56153813Sgrehan * bl _mcount 57153813Sgrehan * 58153813Sgrehan * The link register is saved in the LR save word in the caller's 59153813Sgrehan * stack frame, r0 is set up to point to the allocated longword, 60153813Sgrehan * and control is transferred to _mcount. 61153813Sgrehan * 62153813Sgrehan * On return from _mcount, the routine should function as it would 63153813Sgrehan * with no profiling so _mcount must restore register state to that upon 64153813Sgrehan * entry. Any routine called by the _mcount trampoline will save 65153813Sgrehan * callee-save registers, so _mcount must make sure it saves volatile 66153813Sgrehan * registers that may have state after it returns i.e. parameter registers. 67153813Sgrehan * 68153813Sgrehan * The FreeBSD libc mcount routine ignores the r0 longword pointer, but 69153813Sgrehan * instead requires as parameters the current PC and called PC. The current 70153813Sgrehan * PC is obtained from the link register, as a result of "bl _mcount" in 71153813Sgrehan * the stub, while the caller's PC is obtained from the LR save word. 72153813Sgrehan * 73153813Sgrehan * On return from libc mcount, the return is done indirectly with the 74153813Sgrehan * ctr register rather than the link register, to allow the link register 75153813Sgrehan * to be restored to what it was on entry to the profiled routine. 76153813Sgrehan */ 77153813Sgrehan 78209975Snwhitehorn#ifdef __powerpc64__ 79209975Snwhitehorn#define MCOUNT \ 80209975Snwhitehorn__asm( " .text \n" \ 81209975Snwhitehorn " .align 2 \n" \ 82209975Snwhitehorn " .globl _mcount \n" \ 83209975Snwhitehorn " .section \".opd\",\"aw\" \n" \ 84209975Snwhitehorn " .align 3 \n" \ 85209975Snwhitehorn "_mcount: \n" \ 86218824Snwhitehorn " .quad .L._mcount,.TOC.@tocbase,0\n" \ 87209975Snwhitehorn " .previous \n" \ 88234615Snwhitehorn " .size _mcount,24 \n" \ 89218824Snwhitehorn " .type _mcount,@function \n" \ 90209975Snwhitehorn " .align 4 \n" \ 91218824Snwhitehorn ".L._mcount: \n" \ 92218824Snwhitehorn " stdu %r1,-(288+128)(%r1) \n" \ 93209975Snwhitehorn " std %r3,48(%r1) \n" \ 94209975Snwhitehorn " std %r4,56(%r1) \n" \ 95209975Snwhitehorn " std %r5,64(%r1) \n" \ 96209975Snwhitehorn " std %r6,72(%r1) \n" \ 97209975Snwhitehorn " std %r7,80(%r1) \n" \ 98209975Snwhitehorn " std %r8,88(%r1) \n" \ 99209975Snwhitehorn " std %r9,96(%r1) \n" \ 100209975Snwhitehorn " std %r10,104(%r1) \n" \ 101209975Snwhitehorn " mflr %r4 \n" \ 102209975Snwhitehorn " std %r4,112(%r1) \n" \ 103209975Snwhitehorn " ld %r3,0(%r1) \n" \ 104209975Snwhitehorn " ld %r3,0(%r3) \n" \ 105209975Snwhitehorn " ld %r3,16(%r3) \n" \ 106218824Snwhitehorn " bl __mcount \n" \ 107209975Snwhitehorn " nop \n" \ 108209975Snwhitehorn " ld %r4,112(%r1) \n" \ 109209975Snwhitehorn " mtlr %r4 \n" \ 110209975Snwhitehorn " ld %r3,48(%r1) \n" \ 111209975Snwhitehorn " ld %r4,56(%r1) \n" \ 112209975Snwhitehorn " ld %r5,64(%r1) \n" \ 113209975Snwhitehorn " ld %r6,72(%r1) \n" \ 114209975Snwhitehorn " ld %r7,80(%r1) \n" \ 115209975Snwhitehorn " ld %r8,88(%r1) \n" \ 116209975Snwhitehorn " ld %r9,96(%r1) \n" \ 117209975Snwhitehorn " ld %r10,104(%r1) \n" \ 118218824Snwhitehorn " addi %r1,%r1,(288+128) \n" \ 119209975Snwhitehorn " blr \n"); 120209975Snwhitehorn#else 121209975Snwhitehorn 122153813Sgrehan#ifdef PIC 123153813Sgrehan#define _PLT "@plt" 124153813Sgrehan#else 125153813Sgrehan#define _PLT 126153813Sgrehan#endif 127153813Sgrehan 128184319Smarcel#define MCOUNT \ 129184319Smarcel__asm( " .globl _mcount \n" \ 130184319Smarcel " .type _mcount,@function \n" \ 131184319Smarcel " .align 4 \n" \ 132184319Smarcel "_mcount: \n" \ 133184319Smarcel " stwu %r1,-64(%r1) \n" \ 134184319Smarcel " stw %r3,16(%r1) \n" \ 135184319Smarcel " stw %r4,20(%r1) \n" \ 136184319Smarcel " stw %r5,24(%r1) \n" \ 137184319Smarcel " stw %r6,28(%r1) \n" \ 138184319Smarcel " stw %r7,32(%r1) \n" \ 139184319Smarcel " stw %r8,36(%r1) \n" \ 140184319Smarcel " stw %r9,40(%r1) \n" \ 141184319Smarcel " stw %r10,44(%r1) \n" \ 142184319Smarcel " mflr %r4 \n" \ 143184319Smarcel " stw %r4,48(%r1) \n" \ 144184319Smarcel " lwz %r3,68(%r1) \n" \ 145184319Smarcel " bl __mcount" _PLT " \n" \ 146184319Smarcel " lwz %r3,68(%r1) \n" \ 147184319Smarcel " mtlr %r3 \n" \ 148184319Smarcel " lwz %r4,48(%r1) \n" \ 149184319Smarcel " mtctr %r4 \n" \ 150184319Smarcel " lwz %r3,16(%r1) \n" \ 151184319Smarcel " lwz %r4,20(%r1) \n" \ 152184319Smarcel " lwz %r5,24(%r1) \n" \ 153184319Smarcel " lwz %r6,28(%r1) \n" \ 154184319Smarcel " lwz %r7,32(%r1) \n" \ 155184319Smarcel " lwz %r8,36(%r1) \n" \ 156184319Smarcel " lwz %r9,40(%r1) \n" \ 157184319Smarcel " lwz %r10,44(%r1) \n" \ 158184319Smarcel " addi %r1,%r1,64 \n" \ 159184319Smarcel " bctr \n" \ 160184319Smarcel "_mcount_end: \n" \ 161184319Smarcel " .size _mcount,_mcount_end-_mcount"); 162209975Snwhitehorn#endif 163109481Sgrehan 164109481Sgrehan#ifdef _KERNEL 165184319Smarcel#define MCOUNT_ENTER(s) s = intr_disable() 166184319Smarcel#define MCOUNT_EXIT(s) intr_restore(s) 167184319Smarcel#define MCOUNT_DECL(s) register_t s; 168134398Smarcel 169184319Smarcel#ifndef COMPILING_LINT 170184319Smarcel#ifdef AIM 171184319Smarcel#include <machine/trap.h> 172184319Smarcel#define __PROFILE_VECTOR_BASE EXC_RST 173184319Smarcel#define __PROFILE_VECTOR_TOP (EXC_LAST + 0x100) 174184319Smarcel#endif /* AIM */ 175236141Sraj#if defined(BOOKE) 176184319Smarcelextern char interrupt_vector_base[]; 177184319Smarcelextern char interrupt_vector_top[]; 178184319Smarcel#define __PROFILE_VECTOR_BASE (uintfptr_t)interrupt_vector_base 179184319Smarcel#define __PROFILE_VECTOR_TOP (uintfptr_t)interrupt_vector_top 180236141Sraj#endif /* BOOKE_E500 || BOOKE_PPC4XX */ 181236141Sraj 182184319Smarcel#endif /* !COMPILING_LINT */ 183134398Smarcel 184184319Smarcel#ifndef __PROFILE_VECTOR_BASE 185184319Smarcel#define __PROFILE_VECTOR_BASE 0 186184319Smarcel#endif 187184319Smarcel#ifndef __PROFILE_VECTOR_TOP 188184319Smarcel#define __PROFILE_VECTOR_TOP 1 189184319Smarcel#endif 190134398Smarcel 191184319Smarcelstatic __inline void 192184319Smarcelpowerpc_profile_interrupt(void) 193184319Smarcel{ 194184319Smarcel} 195134398Smarcel 196184319Smarcelstatic __inline void 197184319Smarcelpowerpc_profile_userspace(void) 198184319Smarcel{ 199184319Smarcel} 200109481Sgrehan 201184319Smarcel#define MCOUNT_FROMPC_USER(pc) \ 202184319Smarcel ((pc < (uintfptr_t)VM_MAXUSER_ADDRESS) ? \ 203184319Smarcel (uintfptr_t)powerpc_profile_userspace : pc) 204184319Smarcel 205184319Smarcel#define MCOUNT_FROMPC_INTR(pc) \ 206184319Smarcel ((pc >= __PROFILE_VECTOR_BASE && \ 207184319Smarcel pc < __PROFILE_VECTOR_TOP) ? \ 208184319Smarcel (uintfptr_t)powerpc_profile_interrupt : ~0U) 209184319Smarcel 210184319Smarcelvoid __mcount(uintfptr_t frompc, uintfptr_t selfpc); 211184319Smarcel 212147298Sjkoshy#else /* !_KERNEL */ 213147298Sjkoshy 214209975Snwhitehorn#ifdef __powerpc64__ 215209975Snwhitehorntypedef u_long uintfptr_t; 216209975Snwhitehorn#else 217147298Sjkoshytypedef u_int uintfptr_t; 218209975Snwhitehorn#endif 219147298Sjkoshy 220147298Sjkoshy#endif /* _KERNEL */ 221147298Sjkoshy 222109481Sgrehan#endif /* !_MACHINE_PROFILE_H_ */ 223