1 /*- 2 * Copyright (c) 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)profile.h 8.1 (Berkeley) 6/11/93 34 * $FreeBSD$ 35 */ 36 37 #ifndef _MACHINE_PROFILE_H_ 38 #define _MACHINE_PROFILE_H_ 39 40 /* 41 * Config generates something to tell the compiler to align functions on 32 42 * byte boundaries. A strict alignment is good for keeping the tables small. 43 */ 44 #define FUNCTION_ALIGNMENT 16 45 46 47 #define _MCOUNT_DECL void mcount 48 49 typedef u_long fptrdiff_t; 50 51 /* 52 * Cannot implement mcount in C as GCC will trash the ip register when it 53 * pushes a trapframe. Pity we cannot insert assembly before the function 54 * prologue. 55 */ 56 57 #ifndef PLTSYM 58 #define PLTSYM 59 #endif 60 61 #define MCOUNT \ 62 __asm__(".text"); \ 63 __asm__(".align 0"); \ 64 __asm__(".type __mcount ,%function"); \ 65 __asm__(".global __mcount"); \ 66 __asm__("__mcount:"); \ 67 /* \ 68 * Preserve registers that are trashed during mcount \ 69 */ \ 70 __asm__("stmfd sp!, {r0-r3, ip, lr}"); \ 71 /* \ 72 * find the return address for mcount, \ 73 * and the return address for mcount's caller. \ 74 * \ 75 * frompcindex = pc pushed by call into self. \ 76 */ \ 77 __asm__("mov r0, ip"); \ 78 /* \ 79 * selfpc = pc pushed by mcount call \ 80 */ \ 81 __asm__("mov r1, lr"); \ 82 /* \ 83 * Call the real mcount code \ 84 */ \ 85 __asm__("bl mcount"); \ 86 /* \ 87 * Restore registers that were trashed during mcount \ 88 */ \ 89 __asm__("ldmfd sp!, {r0-r3, lr, pc}"); 90 void bintr(void); 91 void btrap(void); 92 void eintr(void); 93 void user(void); 94 95 #define MCOUNT_FROMPC_USER(pc) \ 96 ((pc < (uintfptr_t)VM_MAXUSER_ADDRESS) ? (uintfptr_t)user : pc) 97 98 #define MCOUNT_FROMPC_INTR(pc) \ 99 ((pc >= (uintfptr_t)btrap && pc < (uintfptr_t)eintr) ? \ 100 ((pc >= (uintfptr_t)bintr) ? (uintfptr_t)bintr : \ 101 (uintfptr_t)btrap) : ~0U) 102 103 104 #ifdef _KERNEL 105 106 #define MCOUNT_DECL(s) register_t s; 107 108 #include <machine/asm.h> 109 #include <machine/cpufunc.h> 110 /* 111 * splhigh() and splx() are heavyweight, and call mcount(). Therefore 112 * we disabled interrupts (IRQ, but not FIQ) directly on the CPU. 113 * 114 * We're lucky that the CPSR and 's' both happen to be 'int's. 115 */ 116 #define MCOUNT_ENTER(s) {s = intr_disable(); } /* kill IRQ */ 117 #define MCOUNT_EXIT(s) {intr_restore(s); } /* restore old value */ 118 119 void mcount(uintfptr_t frompc, uintfptr_t selfpc); 120 121 #else 122 typedef u_int uintfptr_t; 123 #endif /* _KERNEL */ 124 125 #endif /* !_MACHINE_PROFILE_H_ */ 126