1 /*- 2 * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University. 3 * All rights reserved. 4 * 5 * Author: Chris G. Demetriou 6 * 7 * Permission to use, copy, modify and distribute this software and 8 * its documentation is hereby granted, provided that both the copyright 9 * notice and this permission notice appear in all copies of the 10 * software, derivative works or modified versions, and any portions 11 * thereof, and that both notices appear in supporting documentation. 12 * 13 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 14 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 15 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 16 * 17 * Carnegie Mellon requests users of this software to return to 18 * 19 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 20 * School of Computer Science 21 * Carnegie Mellon University 22 * Pittsburgh PA 15213-3890 23 * 24 * any improvements or extensions that they make and grant Carnegie the 25 * rights to redistribute these changes. 26 * 27 * from: NetBSD: profile.h,v 1.9 1997/04/06 08:47:37 cgd Exp 28 * from: FreeBSD: src/sys/alpha/include/profile.h,v 1.4 1999/12/29 29 * $FreeBSD$ 30 */ 31 32 #ifndef _MACHINE_PROFILE_H_ 33 #define _MACHINE_PROFILE_H_ 34 35 #define _MCOUNT_DECL void __mcount 36 37 #define FUNCTION_ALIGNMENT 4 38 39 typedef __ptrdiff_t fptrdiff_t; 40 41 /* 42 * The mcount trampoline macro, expanded in libc/gmon/mcount.c 43 * 44 * For PowerPC SVR4 ABI profiling, the compiler will insert 45 * a data declaration and code sequence at the start of a routine of the form 46 * 47 * .function_mc: .data 48 * .align 2 49 * .long 0 50 * .text 51 * 52 * function: mflr %r0 53 * addis %r11,%r0, .function_mc@ha 54 * stw %r0,4(%r1) 55 * addi %r0,%r11, .function_mc@l 56 * bl _mcount 57 * 58 * The link register is saved in the LR save word in the caller's 59 * stack frame, r0 is set up to point to the allocated longword, 60 * and control is transferred to _mcount. 61 * 62 * On return from _mcount, the routine should function as it would 63 * with no profiling so _mcount must restore register state to that upon 64 * entry. Any routine called by the _mcount trampoline will save 65 * callee-save registers, so _mcount must make sure it saves volatile 66 * registers that may have state after it returns i.e. parameter registers. 67 * 68 * The FreeBSD libc mcount routine ignores the r0 longword pointer, but 69 * instead requires as parameters the current PC and called PC. The current 70 * PC is obtained from the link register, as a result of "bl _mcount" in 71 * the stub, while the caller's PC is obtained from the LR save word. 72 * 73 * On return from libc mcount, the return is done indirectly with the 74 * ctr register rather than the link register, to allow the link register 75 * to be restored to what it was on entry to the profiled routine. 76 */ 77 78 #ifdef __powerpc64__ 79 #define MCOUNT \ 80 __asm( " .text \n" \ 81 " .align 2 \n" \ 82 " .globl _mcount \n" \ 83 " .section \".opd\",\"aw\" \n" \ 84 " .align 3 \n" \ 85 "_mcount: \n" \ 86 " .quad .L._mcount,.TOC.@tocbase,0\n" \ 87 " .previous \n" \ 88 " .size _mcount,24 \n" \ 89 " .type _mcount,@function \n" \ 90 " .align 4 \n" \ 91 ".L._mcount: \n" \ 92 " stdu %r1,-(288+128)(%r1) \n" \ 93 " std %r3,48(%r1) \n" \ 94 " std %r4,56(%r1) \n" \ 95 " std %r5,64(%r1) \n" \ 96 " std %r6,72(%r1) \n" \ 97 " std %r7,80(%r1) \n" \ 98 " std %r8,88(%r1) \n" \ 99 " std %r9,96(%r1) \n" \ 100 " std %r10,104(%r1) \n" \ 101 " mflr %r4 \n" \ 102 " std %r4,112(%r1) \n" \ 103 " ld %r3,0(%r1) \n" \ 104 " ld %r3,0(%r3) \n" \ 105 " ld %r3,16(%r3) \n" \ 106 " bl __mcount \n" \ 107 " nop \n" \ 108 " ld %r4,112(%r1) \n" \ 109 " mtlr %r4 \n" \ 110 " ld %r3,48(%r1) \n" \ 111 " ld %r4,56(%r1) \n" \ 112 " ld %r5,64(%r1) \n" \ 113 " ld %r6,72(%r1) \n" \ 114 " ld %r7,80(%r1) \n" \ 115 " ld %r8,88(%r1) \n" \ 116 " ld %r9,96(%r1) \n" \ 117 " ld %r10,104(%r1) \n" \ 118 " addi %r1,%r1,(288+128) \n" \ 119 " blr \n"); 120 #else 121 122 #ifdef PIC 123 #define _PLT "@plt" 124 #else 125 #define _PLT 126 #endif 127 128 #define MCOUNT \ 129 __asm( " .globl _mcount \n" \ 130 " .type _mcount,@function \n" \ 131 " .align 4 \n" \ 132 "_mcount: \n" \ 133 " stwu %r1,-64(%r1) \n" \ 134 " stw %r3,16(%r1) \n" \ 135 " stw %r4,20(%r1) \n" \ 136 " stw %r5,24(%r1) \n" \ 137 " stw %r6,28(%r1) \n" \ 138 " stw %r7,32(%r1) \n" \ 139 " stw %r8,36(%r1) \n" \ 140 " stw %r9,40(%r1) \n" \ 141 " stw %r10,44(%r1) \n" \ 142 " mflr %r4 \n" \ 143 " stw %r4,48(%r1) \n" \ 144 " lwz %r3,68(%r1) \n" \ 145 " bl __mcount" _PLT " \n" \ 146 " lwz %r3,68(%r1) \n" \ 147 " mtlr %r3 \n" \ 148 " lwz %r4,48(%r1) \n" \ 149 " mtctr %r4 \n" \ 150 " lwz %r3,16(%r1) \n" \ 151 " lwz %r4,20(%r1) \n" \ 152 " lwz %r5,24(%r1) \n" \ 153 " lwz %r6,28(%r1) \n" \ 154 " lwz %r7,32(%r1) \n" \ 155 " lwz %r8,36(%r1) \n" \ 156 " lwz %r9,40(%r1) \n" \ 157 " lwz %r10,44(%r1) \n" \ 158 " addi %r1,%r1,64 \n" \ 159 " bctr \n" \ 160 "_mcount_end: \n" \ 161 " .size _mcount,_mcount_end-_mcount"); 162 #endif 163 164 #ifdef _KERNEL 165 #define MCOUNT_ENTER(s) s = intr_disable() 166 #define MCOUNT_EXIT(s) intr_restore(s) 167 #define MCOUNT_DECL(s) register_t s; 168 169 #ifndef COMPILING_LINT 170 #ifdef AIM 171 #include <machine/trap.h> 172 #define __PROFILE_VECTOR_BASE EXC_RST 173 #define __PROFILE_VECTOR_TOP (EXC_LAST + 0x100) 174 #endif /* AIM */ 175 #if defined(BOOKE) 176 extern char interrupt_vector_base[]; 177 extern char interrupt_vector_top[]; 178 #define __PROFILE_VECTOR_BASE (uintfptr_t)interrupt_vector_base 179 #define __PROFILE_VECTOR_TOP (uintfptr_t)interrupt_vector_top 180 #endif /* BOOKE_E500 || BOOKE_PPC4XX */ 181 182 #endif /* !COMPILING_LINT */ 183 184 #ifndef __PROFILE_VECTOR_BASE 185 #define __PROFILE_VECTOR_BASE 0 186 #endif 187 #ifndef __PROFILE_VECTOR_TOP 188 #define __PROFILE_VECTOR_TOP 1 189 #endif 190 191 static __inline void 192 powerpc_profile_interrupt(void) 193 { 194 } 195 196 static __inline void 197 powerpc_profile_userspace(void) 198 { 199 } 200 201 #define MCOUNT_FROMPC_USER(pc) \ 202 ((pc < (uintfptr_t)VM_MAXUSER_ADDRESS) ? \ 203 (uintfptr_t)powerpc_profile_userspace : pc) 204 205 #define MCOUNT_FROMPC_INTR(pc) \ 206 ((pc >= __PROFILE_VECTOR_BASE && \ 207 pc < __PROFILE_VECTOR_TOP) ? \ 208 (uintfptr_t)powerpc_profile_interrupt : ~0U) 209 210 void __mcount(uintfptr_t frompc, uintfptr_t selfpc); 211 212 #else /* !_KERNEL */ 213 214 #ifdef __powerpc64__ 215 typedef u_long uintfptr_t; 216 #else 217 typedef u_int uintfptr_t; 218 #endif 219 220 #endif /* _KERNEL */ 221 222 #endif /* !_MACHINE_PROFILE_H_ */ 223