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: head/sys/powerpc/include/profile.h 218824 2011-02-18 21:44:53Z nwhitehorn $
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
39typedef __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 " .type _mcount,@function \n" \
89 " .align 4 \n" \
90 ".L._mcount: \n" \
91 " stdu %r1,-(288+128)(%r1) \n" \
92 " std %r3,48(%r1) \n" \
93 " std %r4,56(%r1) \n" \
94 " std %r5,64(%r1) \n" \
95 " std %r6,72(%r1) \n" \
96 " std %r7,80(%r1) \n" \
97 " std %r8,88(%r1) \n" \
98 " std %r9,96(%r1) \n" \
99 " std %r10,104(%r1) \n" \
100 " mflr %r4 \n" \
101 " std %r4,112(%r1) \n" \
102 " ld %r3,0(%r1) \n" \
103 " ld %r3,0(%r3) \n" \
104 " ld %r3,16(%r3) \n" \
105 " bl __mcount \n" \
106 " nop \n" \
107 " ld %r4,112(%r1) \n" \
108 " mtlr %r4 \n" \
109 " ld %r3,48(%r1) \n" \
110 " ld %r4,56(%r1) \n" \
111 " ld %r5,64(%r1) \n" \
112 " ld %r6,72(%r1) \n" \
113 " ld %r7,80(%r1) \n" \
114 " ld %r8,88(%r1) \n" \
115 " ld %r9,96(%r1) \n" \
116 " ld %r10,104(%r1) \n" \
117 " addi %r1,%r1,(288+128) \n" \
118 " blr \n");
119#else
120
121#ifdef PIC
122#define _PLT "@plt"
123#else
124#define _PLT
125#endif
126
127#define MCOUNT \
128__asm( " .globl _mcount \n" \
129 " .type _mcount,@function \n" \
130 " .align 4 \n" \
131 "_mcount: \n" \
132 " stwu %r1,-64(%r1) \n" \
133 " stw %r3,16(%r1) \n" \
134 " stw %r4,20(%r1) \n" \
135 " stw %r5,24(%r1) \n" \
136 " stw %r6,28(%r1) \n" \
137 " stw %r7,32(%r1) \n" \
138 " stw %r8,36(%r1) \n" \
139 " stw %r9,40(%r1) \n" \
140 " stw %r10,44(%r1) \n" \
141 " mflr %r4 \n" \
142 " stw %r4,48(%r1) \n" \
143 " lwz %r3,68(%r1) \n" \
144 " bl __mcount" _PLT " \n" \
145 " lwz %r3,68(%r1) \n" \
146 " mtlr %r3 \n" \
147 " lwz %r4,48(%r1) \n" \
148 " mtctr %r4 \n" \
149 " lwz %r3,16(%r1) \n" \
150 " lwz %r4,20(%r1) \n" \
151 " lwz %r5,24(%r1) \n" \
152 " lwz %r6,28(%r1) \n" \
153 " lwz %r7,32(%r1) \n" \
154 " lwz %r8,36(%r1) \n" \
155 " lwz %r9,40(%r1) \n" \
156 " lwz %r10,44(%r1) \n" \
157 " addi %r1,%r1,64 \n" \
158 " bctr \n" \
159 "_mcount_end: \n" \
160 " .size _mcount,_mcount_end-_mcount");
161#endif
162
163#ifdef _KERNEL
164#define MCOUNT_ENTER(s) s = intr_disable()
165#define MCOUNT_EXIT(s) intr_restore(s)
166#define MCOUNT_DECL(s) register_t s;
167
168#ifndef COMPILING_LINT
169#ifdef AIM
170#include <machine/trap.h>
171#define __PROFILE_VECTOR_BASE EXC_RST
172#define __PROFILE_VECTOR_TOP (EXC_LAST + 0x100)
173#endif /* AIM */
174#ifdef E500
175extern char interrupt_vector_base[];
176extern char interrupt_vector_top[];
177#define __PROFILE_VECTOR_BASE (uintfptr_t)interrupt_vector_base
178#define __PROFILE_VECTOR_TOP (uintfptr_t)interrupt_vector_top
179#endif /* E500 */
180#endif /* !COMPILING_LINT */
181
182#ifndef __PROFILE_VECTOR_BASE
183#define __PROFILE_VECTOR_BASE 0
184#endif
185#ifndef __PROFILE_VECTOR_TOP
186#define __PROFILE_VECTOR_TOP 1
187#endif
188
189static __inline void
190powerpc_profile_interrupt(void)
191{
192}
193
194static __inline void
195powerpc_profile_userspace(void)
196{
197}
198
199#define MCOUNT_FROMPC_USER(pc) \
200 ((pc < (uintfptr_t)VM_MAXUSER_ADDRESS) ? \
201 (uintfptr_t)powerpc_profile_userspace : pc)
202
203#define MCOUNT_FROMPC_INTR(pc) \
204 ((pc >= __PROFILE_VECTOR_BASE && \
205 pc < __PROFILE_VECTOR_TOP) ? \
206 (uintfptr_t)powerpc_profile_interrupt : ~0U)
207
208void __mcount(uintfptr_t frompc, uintfptr_t selfpc);
209
210#else /* !_KERNEL */
211
212#ifdef __powerpc64__
213typedef u_long uintfptr_t;
214#else
215typedef u_int uintfptr_t;
216#endif
217
218#endif /* _KERNEL */
219
220#endif /* !_MACHINE_PROFILE_H_ */
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: head/sys/powerpc/include/profile.h 218824 2011-02-18 21:44:53Z nwhitehorn $
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
39typedef __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 " .type _mcount,@function \n" \
89 " .align 4 \n" \
90 ".L._mcount: \n" \
91 " stdu %r1,-(288+128)(%r1) \n" \
92 " std %r3,48(%r1) \n" \
93 " std %r4,56(%r1) \n" \
94 " std %r5,64(%r1) \n" \
95 " std %r6,72(%r1) \n" \
96 " std %r7,80(%r1) \n" \
97 " std %r8,88(%r1) \n" \
98 " std %r9,96(%r1) \n" \
99 " std %r10,104(%r1) \n" \
100 " mflr %r4 \n" \
101 " std %r4,112(%r1) \n" \
102 " ld %r3,0(%r1) \n" \
103 " ld %r3,0(%r3) \n" \
104 " ld %r3,16(%r3) \n" \
105 " bl __mcount \n" \
106 " nop \n" \
107 " ld %r4,112(%r1) \n" \
108 " mtlr %r4 \n" \
109 " ld %r3,48(%r1) \n" \
110 " ld %r4,56(%r1) \n" \
111 " ld %r5,64(%r1) \n" \
112 " ld %r6,72(%r1) \n" \
113 " ld %r7,80(%r1) \n" \
114 " ld %r8,88(%r1) \n" \
115 " ld %r9,96(%r1) \n" \
116 " ld %r10,104(%r1) \n" \
117 " addi %r1,%r1,(288+128) \n" \
118 " blr \n");
119#else
120
121#ifdef PIC
122#define _PLT "@plt"
123#else
124#define _PLT
125#endif
126
127#define MCOUNT \
128__asm( " .globl _mcount \n" \
129 " .type _mcount,@function \n" \
130 " .align 4 \n" \
131 "_mcount: \n" \
132 " stwu %r1,-64(%r1) \n" \
133 " stw %r3,16(%r1) \n" \
134 " stw %r4,20(%r1) \n" \
135 " stw %r5,24(%r1) \n" \
136 " stw %r6,28(%r1) \n" \
137 " stw %r7,32(%r1) \n" \
138 " stw %r8,36(%r1) \n" \
139 " stw %r9,40(%r1) \n" \
140 " stw %r10,44(%r1) \n" \
141 " mflr %r4 \n" \
142 " stw %r4,48(%r1) \n" \
143 " lwz %r3,68(%r1) \n" \
144 " bl __mcount" _PLT " \n" \
145 " lwz %r3,68(%r1) \n" \
146 " mtlr %r3 \n" \
147 " lwz %r4,48(%r1) \n" \
148 " mtctr %r4 \n" \
149 " lwz %r3,16(%r1) \n" \
150 " lwz %r4,20(%r1) \n" \
151 " lwz %r5,24(%r1) \n" \
152 " lwz %r6,28(%r1) \n" \
153 " lwz %r7,32(%r1) \n" \
154 " lwz %r8,36(%r1) \n" \
155 " lwz %r9,40(%r1) \n" \
156 " lwz %r10,44(%r1) \n" \
157 " addi %r1,%r1,64 \n" \
158 " bctr \n" \
159 "_mcount_end: \n" \
160 " .size _mcount,_mcount_end-_mcount");
161#endif
162
163#ifdef _KERNEL
164#define MCOUNT_ENTER(s) s = intr_disable()
165#define MCOUNT_EXIT(s) intr_restore(s)
166#define MCOUNT_DECL(s) register_t s;
167
168#ifndef COMPILING_LINT
169#ifdef AIM
170#include <machine/trap.h>
171#define __PROFILE_VECTOR_BASE EXC_RST
172#define __PROFILE_VECTOR_TOP (EXC_LAST + 0x100)
173#endif /* AIM */
174#ifdef E500
175extern char interrupt_vector_base[];
176extern char interrupt_vector_top[];
177#define __PROFILE_VECTOR_BASE (uintfptr_t)interrupt_vector_base
178#define __PROFILE_VECTOR_TOP (uintfptr_t)interrupt_vector_top
179#endif /* E500 */
180#endif /* !COMPILING_LINT */
181
182#ifndef __PROFILE_VECTOR_BASE
183#define __PROFILE_VECTOR_BASE 0
184#endif
185#ifndef __PROFILE_VECTOR_TOP
186#define __PROFILE_VECTOR_TOP 1
187#endif
188
189static __inline void
190powerpc_profile_interrupt(void)
191{
192}
193
194static __inline void
195powerpc_profile_userspace(void)
196{
197}
198
199#define MCOUNT_FROMPC_USER(pc) \
200 ((pc < (uintfptr_t)VM_MAXUSER_ADDRESS) ? \
201 (uintfptr_t)powerpc_profile_userspace : pc)
202
203#define MCOUNT_FROMPC_INTR(pc) \
204 ((pc >= __PROFILE_VECTOR_BASE && \
205 pc < __PROFILE_VECTOR_TOP) ? \
206 (uintfptr_t)powerpc_profile_interrupt : ~0U)
207
208void __mcount(uintfptr_t frompc, uintfptr_t selfpc);
209
210#else /* !_KERNEL */
211
212#ifdef __powerpc64__
213typedef u_long uintfptr_t;
214#else
215typedef u_int uintfptr_t;
216#endif
217
218#endif /* _KERNEL */
219
220#endif /* !_MACHINE_PROFILE_H_ */