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patch fix-lint


   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 
  22 /*
  23  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  * Copyright 2012 Joshua M. Clulow <josh@sysmgr.org>

  26  */
  27 
  28 #include <libdisasm.h>
  29 #include <stdlib.h>
  30 #include <stdio.h>
  31 
  32 #include "dis_tables.h"
  33 #include "libdisasm_impl.h"
  34 
  35 typedef struct dis_handle_i386 {
  36         int             dhx_mode;
  37         dis86_t         dhx_dis;
  38         uint64_t        dhx_end;
  39 } dis_handle_i386_t;
  40 
  41 /*
  42  * Returns true if we are near the end of a function.  This is a cheap hack at
  43  * detecting NULL padding between functions.  If we're within a few bytes of the
  44  * next function, or past the start, then return true.
  45  */
  46 static int
  47 check_func(void *data)
  48 {
  49         dis_handle_t *dhp = data;
  50         uint64_t start;


 109          */
 110         if ((dhx = dis_zalloc(sizeof (dis_handle_i386_t))) == NULL) {
 111                 (void) dis_seterrno(E_DIS_NOMEM);
 112                 return (-1);
 113         }
 114         dhp->dh_arch_private = dhx;
 115 
 116         /*
 117          * Initialize x86-specific architecture structure
 118          */
 119         if (dhp->dh_flags & DIS_X86_SIZE16)
 120                 dhx->dhx_mode = SIZE16;
 121         else if (dhp->dh_flags & DIS_X86_SIZE64)
 122                 dhx->dhx_mode = SIZE64;
 123         else
 124                 dhx->dhx_mode = SIZE32;
 125 
 126         if (dhp->dh_flags & DIS_OCTAL)
 127                 dhx->dhx_dis.d86_flags = DIS_F_OCTAL;
 128 
 129         dhx->dhx_dis.d86_sprintf_func = snprintf;
 130         dhx->dhx_dis.d86_get_byte = get_byte;
 131         dhx->dhx_dis.d86_sym_lookup = do_lookup;
 132         dhx->dhx_dis.d86_check_func = check_func;
 133 
 134         dhx->dhx_dis.d86_data = dhp;
 135 
 136         return (0);
 137 }
 138 
 139 static int
 140 dis_i386_disassemble(dis_handle_t *dhp, uint64_t addr, char *buf,
 141     size_t buflen)
 142 {
 143         dis_handle_i386_t *dhx = dhp->dh_arch_private;
 144         dhp->dh_addr = addr;
 145 
 146         /* DIS_NOIMMSYM might not be set until now, so update */
 147         if (dhp->dh_flags & DIS_NOIMMSYM)
 148                 dhx->dhx_dis.d86_flags |= DIS_F_NOIMMSYM;
 149         else


 156                 dtrace_disx86_str(&dhx->dhx_dis, dhx->dhx_mode, addr, buf,
 157                     buflen);
 158 
 159         return (0);
 160 }
 161 
 162 /* ARGSUSED */
 163 static int
 164 dis_i386_max_instrlen(dis_handle_t *dhp)
 165 {
 166         return (15);
 167 }
 168 
 169 /* ARGSUSED */
 170 static int
 171 dis_i386_min_instrlen(dis_handle_t *dhp)
 172 {
 173         return (1);
 174 }
 175 
 176 #define MIN(a, b)       ((a) < (b) ? (a) : (b))
 177 
 178 /*
 179  * Return the previous instruction.  On x86, we have no choice except to
 180  * disassemble everything from the start of the symbol, and stop when we have
 181  * reached our instruction address.  If we're not in the middle of a known
 182  * symbol, then we return the same address to indicate failure.
 183  */
 184 static uint64_t
 185 dis_i386_previnstr(dis_handle_t *dhp, uint64_t pc, int n)
 186 {
 187         uint64_t *hist, addr, start;
 188         int cur, nseen;
 189         uint64_t res = pc;
 190 
 191         if (n <= 0)
 192                 return (pc);
 193 
 194         if (dhp->dh_lookup(dhp->dh_data, pc, NULL, 0, &start, NULL) != 0 ||
 195             start == pc)
 196                 return (res);
 197 




   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 
  22 /*
  23  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  * Copyright 2012 Joshua M. Clulow <josh@sysmgr.org>
  26  * Copyright 2014 Nexenta Systems, Inc.  All rights reserved.
  27  */
  28 
  29 #include <libdisasm.h>


  30 
  31 #include "dis_tables.h"
  32 #include "libdisasm_impl.h"
  33 
  34 typedef struct dis_handle_i386 {
  35         int             dhx_mode;
  36         dis86_t         dhx_dis;
  37         uint64_t        dhx_end;
  38 } dis_handle_i386_t;
  39 
  40 /*
  41  * Returns true if we are near the end of a function.  This is a cheap hack at
  42  * detecting NULL padding between functions.  If we're within a few bytes of the
  43  * next function, or past the start, then return true.
  44  */
  45 static int
  46 check_func(void *data)
  47 {
  48         dis_handle_t *dhp = data;
  49         uint64_t start;


 108          */
 109         if ((dhx = dis_zalloc(sizeof (dis_handle_i386_t))) == NULL) {
 110                 (void) dis_seterrno(E_DIS_NOMEM);
 111                 return (-1);
 112         }
 113         dhp->dh_arch_private = dhx;
 114 
 115         /*
 116          * Initialize x86-specific architecture structure
 117          */
 118         if (dhp->dh_flags & DIS_X86_SIZE16)
 119                 dhx->dhx_mode = SIZE16;
 120         else if (dhp->dh_flags & DIS_X86_SIZE64)
 121                 dhx->dhx_mode = SIZE64;
 122         else
 123                 dhx->dhx_mode = SIZE32;
 124 
 125         if (dhp->dh_flags & DIS_OCTAL)
 126                 dhx->dhx_dis.d86_flags = DIS_F_OCTAL;
 127 
 128         dhx->dhx_dis.d86_sprintf_func = dis_snprintf;
 129         dhx->dhx_dis.d86_get_byte = get_byte;
 130         dhx->dhx_dis.d86_sym_lookup = do_lookup;
 131         dhx->dhx_dis.d86_check_func = check_func;
 132 
 133         dhx->dhx_dis.d86_data = dhp;
 134 
 135         return (0);
 136 }
 137 
 138 static int
 139 dis_i386_disassemble(dis_handle_t *dhp, uint64_t addr, char *buf,
 140     size_t buflen)
 141 {
 142         dis_handle_i386_t *dhx = dhp->dh_arch_private;
 143         dhp->dh_addr = addr;
 144 
 145         /* DIS_NOIMMSYM might not be set until now, so update */
 146         if (dhp->dh_flags & DIS_NOIMMSYM)
 147                 dhx->dhx_dis.d86_flags |= DIS_F_NOIMMSYM;
 148         else


 155                 dtrace_disx86_str(&dhx->dhx_dis, dhx->dhx_mode, addr, buf,
 156                     buflen);
 157 
 158         return (0);
 159 }
 160 
 161 /* ARGSUSED */
 162 static int
 163 dis_i386_max_instrlen(dis_handle_t *dhp)
 164 {
 165         return (15);
 166 }
 167 
 168 /* ARGSUSED */
 169 static int
 170 dis_i386_min_instrlen(dis_handle_t *dhp)
 171 {
 172         return (1);
 173 }
 174 


 175 /*
 176  * Return the previous instruction.  On x86, we have no choice except to
 177  * disassemble everything from the start of the symbol, and stop when we have
 178  * reached our instruction address.  If we're not in the middle of a known
 179  * symbol, then we return the same address to indicate failure.
 180  */
 181 static uint64_t
 182 dis_i386_previnstr(dis_handle_t *dhp, uint64_t pc, int n)
 183 {
 184         uint64_t *hist, addr, start;
 185         int cur, nseen;
 186         uint64_t res = pc;
 187 
 188         if (n <= 0)
 189                 return (pc);
 190 
 191         if (dhp->dh_lookup(dhp->dh_data, pc, NULL, 0, &start, NULL) != 0 ||
 192             start == pc)
 193                 return (res);
 194