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dt_isadep.c (256281) dt_isadep.c (260670)
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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30#include <assert.h>
31#include <errno.h>
32#include <string.h>
33#include <libgen.h>
34
35#include <dt_impl.h>
36#include <dt_pid.h>
37
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 *

--- 21 unchanged lines hidden (view full) ---

30#include <assert.h>
31#include <errno.h>
32#include <string.h>
33#include <libgen.h>
34
35#include <dt_impl.h>
36#include <dt_pid.h>
37
38#include <libproc_compat.h>
39
38/*ARGSUSED*/
39int
40dt_pid_create_entry_probe(struct ps_prochandle *P, dtrace_hdl_t *dtp,
41 fasttrap_probe_spec_t *ftp, const GElf_Sym *symp)
42{
40/*ARGSUSED*/
41int
42dt_pid_create_entry_probe(struct ps_prochandle *P, dtrace_hdl_t *dtp,
43 fasttrap_probe_spec_t *ftp, const GElf_Sym *symp)
44{
45 ftp->ftps_type = DTFTP_ENTRY;
46 ftp->ftps_pc = (uintptr_t)symp->st_value;
47 ftp->ftps_size = (size_t)symp->st_size;
48 ftp->ftps_noffs = 1;
49 ftp->ftps_offs[0] = 0;
43
50
44 dt_dprintf("%s: unimplemented\n", __func__);
45 return (DT_PROC_ERR);
51 if (ioctl(dtp->dt_ftfd, FASTTRAPIOC_MAKEPROBE, ftp) != 0) {
52 dt_dprintf("fasttrap probe creation ioctl failed: %s\n",
53 strerror(errno));
54 return (dt_set_errno(dtp, errno));
55 }
56
57 return (1);
46}
47
48int
49dt_pid_create_return_probe(struct ps_prochandle *P, dtrace_hdl_t *dtp,
50 fasttrap_probe_spec_t *ftp, const GElf_Sym *symp, uint64_t *stret)
51{
52
58}
59
60int
61dt_pid_create_return_probe(struct ps_prochandle *P, dtrace_hdl_t *dtp,
62 fasttrap_probe_spec_t *ftp, const GElf_Sym *symp, uint64_t *stret)
63{
64
53 dt_dprintf("%s: unimplemented\n", __func__);
54 return (DT_PROC_ERR);
65 uintptr_t temp;
66 uint32_t *text;
67 int i;
68 int srdepth = 0;
69
70 if ((text = malloc(symp->st_size + 4)) == NULL) {
71 dt_dprintf("mr sparkle: malloc() failed\n");
72 return (DT_PROC_ERR);
73 }
74
75 if (Pread(P, text, symp->st_size, symp->st_value) != symp->st_size) {
76 dt_dprintf("mr sparkle: Pread() failed\n");
77 free(text);
78 return (DT_PROC_ERR);
79 }
80
81 /*
82 * Leave a dummy instruction in the last slot to simplify edge
83 * conditions.
84 */
85 text[symp->st_size / 4] = 0;
86
87 ftp->ftps_type = DTFTP_RETURN;
88 ftp->ftps_pc = symp->st_value;
89 ftp->ftps_size = symp->st_size;
90 ftp->ftps_noffs = 0;
91
92 for (i = 0; i < symp->st_size / 4; i++) {
93
94 if ((text[i] & 0xfc000001) != 0x48000000 &&
95 text[i] != 0x4e800020)
96 continue;
97
98 /*
99 * Check for a jump within this function. If it's outside this
100 * function then it's a tail-call, so a return point.
101 */
102 if ((text[i] & 0xfc000000) == 0x48000000) {
103 temp = (text[i] & 0x03fffffc);
104 /* Bit 30 denotes an absolute address. */
105 if (!(text[i] & 0x02)) {
106 temp += symp->st_value + i * 4;
107 }
108 else {
109 /* Sign extend the absolute address. */
110 if (temp & 0x02000000) {
111 temp |= (UINTPTR_MAX - 0x03ffffff);
112 }
113 }
114 if (temp >= symp->st_value &&
115 temp <= (symp->st_value + symp->st_size))
116 continue;
117 }
118 dt_dprintf("return at offset %x\n", i * 4);
119 ftp->ftps_offs[ftp->ftps_noffs++] = i * 4;
120 }
121
122 free(text);
123 if (ftp->ftps_noffs > 0) {
124 if (ioctl(dtp->dt_ftfd, FASTTRAPIOC_MAKEPROBE, ftp) != 0) {
125 dt_dprintf("fasttrap probe creation ioctl failed: %s\n",
126 strerror(errno));
127 return (dt_set_errno(dtp, errno));
128 }
129 }
130
131
132 return (ftp->ftps_noffs);
55}
56
57/*ARGSUSED*/
58int
59dt_pid_create_offset_probe(struct ps_prochandle *P, dtrace_hdl_t *dtp,
60 fasttrap_probe_spec_t *ftp, const GElf_Sym *symp, ulong_t off)
61{
133}
134
135/*ARGSUSED*/
136int
137dt_pid_create_offset_probe(struct ps_prochandle *P, dtrace_hdl_t *dtp,
138 fasttrap_probe_spec_t *ftp, const GElf_Sym *symp, ulong_t off)
139{
140 if (off & 0x3)
141 return (DT_PROC_ALIGN);
62
142
63 dt_dprintf("%s: unimplemented\n", __func__);
64 return (DT_PROC_ERR);
143 ftp->ftps_type = DTFTP_OFFSETS;
144 ftp->ftps_pc = (uintptr_t)symp->st_value;
145 ftp->ftps_size = (size_t)symp->st_size;
146 ftp->ftps_noffs = 1;
147 ftp->ftps_offs[0] = off;
148
149 if (ioctl(dtp->dt_ftfd, FASTTRAPIOC_MAKEPROBE, ftp) != 0) {
150 dt_dprintf("fasttrap probe creation ioctl failed: %s\n",
151 strerror(errno));
152 return (dt_set_errno(dtp, errno));
153 }
154
155 return (1);
65}
66
67/*ARGSUSED*/
68int
69dt_pid_create_glob_offset_probes(struct ps_prochandle *P, dtrace_hdl_t *dtp,
70 fasttrap_probe_spec_t *ftp, const GElf_Sym *symp, const char *pattern)
71{
156}
157
158/*ARGSUSED*/
159int
160dt_pid_create_glob_offset_probes(struct ps_prochandle *P, dtrace_hdl_t *dtp,
161 fasttrap_probe_spec_t *ftp, const GElf_Sym *symp, const char *pattern)
162{
163 ulong_t i;
72
164
73 dt_dprintf("%s: unimplemented\n", __func__);
74 return (DT_PROC_ERR);
165 ftp->ftps_type = DTFTP_OFFSETS;
166 ftp->ftps_pc = (uintptr_t)symp->st_value;
167 ftp->ftps_size = (size_t)symp->st_size;
168 ftp->ftps_noffs = 0;
169
170 /*
171 * If we're matching against everything, just iterate through each
172 * instruction in the function, otherwise look for matching offset
173 * names by constructing the string and comparing it against the
174 * pattern.
175 */
176 if (strcmp("*", pattern) == 0) {
177 for (i = 0; i < symp->st_size; i += 4) {
178 ftp->ftps_offs[ftp->ftps_noffs++] = i;
179 }
180 } else {
181 char name[sizeof (i) * 2 + 1];
182
183 for (i = 0; i < symp->st_size; i += 4) {
184 (void) sprintf(name, "%lx", i);
185 if (gmatch(name, pattern))
186 ftp->ftps_offs[ftp->ftps_noffs++] = i;
187 }
188 }
189
190 if (ioctl(dtp->dt_ftfd, FASTTRAPIOC_MAKEPROBE, ftp) != 0) {
191 dt_dprintf("fasttrap probe creation ioctl failed: %s\n",
192 strerror(errno));
193 return (dt_set_errno(dtp, errno));
194 }
195
196 return (ftp->ftps_noffs);
75}
197}