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dtrace_isa.c (278529) dtrace_isa.c (278997)
1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *

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14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 *
1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *

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14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 *
22 * $FreeBSD: head/sys/cddl/dev/dtrace/arm/dtrace_isa.c 278529 2015-02-10 19:41:30Z gnn $
22 * $FreeBSD: head/sys/cddl/dev/dtrace/arm/dtrace_isa.c 278997 2015-02-19 12:20:21Z andrew $
23 */
24/*
25 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
26 * Use is subject to license terms.
27 */
28#include <sys/cdefs.h>
29
30#include <sys/param.h>

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64uint16_t dtrace_fuword16_nocheck(void *);
65uint32_t dtrace_fuword32_nocheck(void *);
66uint64_t dtrace_fuword64_nocheck(void *);
67
68void
69dtrace_getpcstack(pc_t *pcstack, int pcstack_limit, int aframes,
70 uint32_t *intrpc)
71{
23 */
24/*
25 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
26 * Use is subject to license terms.
27 */
28#include <sys/cdefs.h>
29
30#include <sys/param.h>

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64uint16_t dtrace_fuword16_nocheck(void *);
65uint32_t dtrace_fuword32_nocheck(void *);
66uint64_t dtrace_fuword64_nocheck(void *);
67
68void
69dtrace_getpcstack(pc_t *pcstack, int pcstack_limit, int aframes,
70 uint32_t *intrpc)
71{
72 u_int32_t *frame, *lastframe;
73 int scp_offset;
74 int depth = 0;
72 struct unwind_state state;
73 register_t sp;
74 int scp_offset;
75 int depth = 0;
75 pc_t caller = (pc_t) solaris_cpu[curcpu].cpu_dtrace_caller;
76
77 if (intrpc != 0)
78 pcstack[depth++] = (pc_t) intrpc;
79
80 aframes++;
81
76 pc_t caller = (pc_t) solaris_cpu[curcpu].cpu_dtrace_caller;
77
78 if (intrpc != 0)
79 pcstack[depth++] = (pc_t) intrpc;
80
81 aframes++;
82
82 frame = (u_int32_t *)__builtin_frame_address(0);;
83 lastframe = NULL;
84 scp_offset = -(get_pc_str_offset() >> 2);
83 __asm __volatile("mov %0, sp" : "=&r" (sp));
85
84
86 while ((frame != NULL) && (depth < pcstack_limit)) {
87 db_addr_t scp;
88#if 0
89 u_int32_t savecode;
90 int r;
91 u_int32_t *rp;
92#endif
85 state.registers[FP] = (uint32_t)__builtin_frame_address(0);
86 state.registers[SP] = sp;
87 state.registers[LR] = (uint32_t)__builtin_return_address(0);
88 state.registers[PC] = (uint32_t)dtrace_getpcstack;
93
89
94 /*
95 * In theory, the SCP isn't guaranteed to be in the function
96 * that generated the stack frame. We hope for the best.
97 */
98 scp = frame[FR_SCP];
90 while (depth < pcstack_limit) {
91 int done;
99
92
93 done = unwind_stack_one(&state, 1);
94
100 if (aframes > 0) {
101 aframes--;
102 if ((aframes == 0) && (caller != 0)) {
103 pcstack[depth++] = caller;
104 }
105 }
106 else {
95 if (aframes > 0) {
96 aframes--;
97 if ((aframes == 0) && (caller != 0)) {
98 pcstack[depth++] = caller;
99 }
100 }
101 else {
107 pcstack[depth++] = scp;
102 pcstack[depth++] = state.registers[PC];
108 }
109
103 }
104
110#if 0
111 savecode = ((u_int32_t *)scp)[scp_offset];
112 if ((savecode & 0x0e100000) == 0x08000000) {
113 /* Looks like an STM */
114 rp = frame - 4;
115 for (r = 10; r >= 0; r--) {
116 if (savecode & (1 << r)) {
117 /* register r == *rp-- */
118 }
119 }
120 }
121#endif
122
123 /*
124 * Switch to next frame up
125 */
126 if (frame[FR_RFP] == 0)
127 break; /* Top of stack */
128
129 lastframe = frame;
130 frame = (u_int32_t *)(frame[FR_RFP]);
131
132 if (INKERNEL((int)frame)) {
133 /* staying in kernel */
134 if (frame <= lastframe) {
135 /* bad frame pointer */
136 break;
137 }
138 }
139 else
105 if (done)
140 break;
141 }
142
143 for (; depth < pcstack_limit; depth++) {
144 pcstack[depth] = 0;
145 }
146}
147

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171/* struct arm_frame *fp = (struct arm_frame *)dtrace_getfp();*/
172
173 return (0);
174}
175
176int
177dtrace_getstackdepth(int aframes)
178{
106 break;
107 }
108
109 for (; depth < pcstack_limit; depth++) {
110 pcstack[depth] = 0;
111 }
112}
113

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137/* struct arm_frame *fp = (struct arm_frame *)dtrace_getfp();*/
138
139 return (0);
140}
141
142int
143dtrace_getstackdepth(int aframes)
144{
179 u_int32_t *frame, *lastframe;
180 int scp_offset;
181 int depth = 1;
145 struct unwind_state state;
146 register_t sp;
147 int scp_offset;
148 int done = 0;
149 int depth = 1;
182
150
183 frame = (u_int32_t *)__builtin_frame_address(0);;
184 lastframe = NULL;
185 scp_offset = -(get_pc_str_offset() >> 2);
151 __asm __volatile("mov %0, sp" : "=&r" (sp));
186
152
187 while (frame != NULL) {
188 db_addr_t scp;
189#if 0
190 u_int32_t savecode;
191 int r;
192 u_int32_t *rp;
193#endif
153 state.registers[FP] = (uint32_t)__builtin_frame_address(0);
154 state.registers[SP] = sp;
155 state.registers[LR] = (uint32_t)__builtin_return_address(0);
156 state.registers[PC] = (uint32_t)dtrace_getstackdepth;
194
157
195 /*
196 * In theory, the SCP isn't guaranteed to be in the function
197 * that generated the stack frame. We hope for the best.
198 */
199 scp = frame[FR_SCP];
200
158 do {
159 done = unwind_stack_one(&state, 1);
201 depth++;
160 depth++;
161 } while (!done);
202
162
203 /*
204 * Switch to next frame up
205 */
206 if (frame[FR_RFP] == 0)
207 break; /* Top of stack */
208
209 lastframe = frame;
210 frame = (u_int32_t *)(frame[FR_RFP]);
211
212 if (INKERNEL((int)frame)) {
213 /* staying in kernel */
214 if (frame <= lastframe) {
215 /* bad frame pointer */
216 break;
217 }
218 }
219 else
220 break;
221 }
222
223 if (depth < aframes)
224 return 0;
225 else
226 return depth - aframes;
163 if (depth < aframes)
164 return 0;
165 else
166 return depth - aframes;
227
228}
229
230ulong_t
231dtrace_getreg(struct trapframe *rp, uint_t reg)
232{
233 printf("IMPLEMENT ME: %s\n", __func__);
234
235 return (0);

--- 121 unchanged lines hidden --- 		167}
168
169ulong_t
170dtrace_getreg(struct trapframe *rp, uint_t reg)
171{
172 printf("IMPLEMENT ME: %s\n", __func__);
173
174 return (0);

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