usr/src/cmd/sgs/libconv/common/dwarf_ehe.c

   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 (the "License").
   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  */
  26 #pragma ident   "%Z%%M% %I%     %E% SMI"
  27
  28 #include        <strings.h>
  29 #include        <dwarf.h>
  30 #include        "_conv.h"
  31 #include        <dwarf_ehe_msg.h>
  32
  33 #define FLAGSZ  MSG_GBL_OSQBRKT_SIZE + \
  34                 MSG_DWEHE_SLEB128_SIZE + \
  35                 MSG_DWEHE_INDIRECT_SIZE + \
  36                 CONV_INV_BUFSIZE + MSG_GBL_CSQBRKT_SIZE
  37
  38 /*
  39  * Ensure that Conv_dwarf_ehe_buf_t is large enough:
  40  *
  41  * FLAGSZ is the real minimum size of the buffer required by conv_dwarf_ehe().
  42  * However, Conv_dwarf_ehe_buf_t uses CONV_EHDR_FLAG_BUFSIZE to set the
  43  * buffer size. We do things this way because the definition of FLAGSZ uses
  44  * information that is not available in the environment of other programs
  45  * that include the conv.h header file.
  46  */
  47 #if (CONV_DWARF_EHE_BUFSIZE != FLAGSZ) && !defined(__lint)
  48 #define REPORT_BUFSIZE FLAGSZ
  49 #include "report_bufsize.h"
  50 #error "CONV_DWARF_EHE_BUFSIZE does not match FLAGSZ"
  51 #endif
  52
  53 const char *
  54 conv_dwarf_ehe(uint_t flags, Conv_dwarf_ehe_buf_t *dwarf_ehe_buf)
  55 {
  56         char    *buf = dwarf_ehe_buf->buf;
  57         size_t  ret = 0;
  58
  59         (void) strncpy(buf, MSG_ORIG(MSG_GBL_OSQBRKT), FLAGSZ);
  60
  61         if (flags == DW_EH_PE_omit)
  62                 ret = strlcat(buf, MSG_ORIG(MSG_DWEHE_OMIT), FLAGSZ);
  63         else if (flags == DW_EH_PE_absptr)
  64                 ret = strlcat(buf, MSG_ORIG(MSG_DWEHE_ABSPTR), FLAGSZ);
  65
  66         if (ret >= FLAGSZ)
  67                 return (conv_invalid_val(&dwarf_ehe_buf->inv_buf, flags, 0));
  68
  69         if ((flags == DW_EH_PE_omit) || (flags == DW_EH_PE_absptr)) {
  70                 (void) strlcat(buf, MSG_ORIG(MSG_GBL_CSQBRKT), FLAGSZ);
  71                 return (buf);
  72         }
  73
  74         switch (flags & 0x0f) {
  75         case DW_EH_PE_uleb128:
  76                 ret = strlcat(buf, MSG_ORIG(MSG_DWEHE_ULEB128), FLAGSZ);
  77                 break;
  78         case DW_EH_PE_udata2:
  79                 ret = strlcat(buf, MSG_ORIG(MSG_DWEHE_UDATA2), FLAGSZ);
  80                 break;
  81         case DW_EH_PE_udata4:
  82                 ret = strlcat(buf, MSG_ORIG(MSG_DWEHE_UDATA4), FLAGSZ);
  83                 break;
  84         case DW_EH_PE_udata8:
  85                 ret = strlcat(buf, MSG_ORIG(MSG_DWEHE_UDATA8), FLAGSZ);
  86                 break;
  87         case DW_EH_PE_sleb128:
  88                 ret = strlcat(buf, MSG_ORIG(MSG_DWEHE_SLEB128), FLAGSZ);
  89                 break;
  90         case DW_EH_PE_sdata2:
  91                 ret = strlcat(buf, MSG_ORIG(MSG_DWEHE_SDATA2), FLAGSZ);
  92                 break;
  93         case DW_EH_PE_sdata4:
  94                 ret = strlcat(buf, MSG_ORIG(MSG_DWEHE_SDATA4), FLAGSZ);
  95                 break;
  96         case DW_EH_PE_sdata8:
  97                 ret = strlcat(buf, MSG_ORIG(MSG_DWEHE_SDATA8), FLAGSZ);
  98                 break;
  99         }
 100         if (ret >= FLAGSZ)
 101                 return (conv_invalid_val(&dwarf_ehe_buf->inv_buf, flags, 0));
 102
 103         switch (flags & 0xf0) {
 104         case DW_EH_PE_pcrel:
 105                 ret = strlcat(buf, MSG_ORIG(MSG_DWEHE_PCREL), FLAGSZ);
 106                 break;
 107         case DW_EH_PE_textrel:
 108                 ret = strlcat(buf, MSG_ORIG(MSG_DWEHE_TEXTREL), FLAGSZ);
 109                 break;
 110         case DW_EH_PE_datarel:
 111                 ret = strlcat(buf, MSG_ORIG(MSG_DWEHE_DATAREL), FLAGSZ);
 112                 break;
 113         case DW_EH_PE_funcrel:
 114                 ret = strlcat(buf, MSG_ORIG(MSG_DWEHE_FUNCREL), FLAGSZ);
 115                 break;
 116         case DW_EH_PE_aligned:
 117                 ret = strlcat(buf, MSG_ORIG(MSG_DWEHE_ALIGNED), FLAGSZ);
 118                 break;
 119         case DW_EH_PE_indirect:
 120                 ret = strlcat(buf, MSG_ORIG(MSG_DWEHE_INDIRECT), FLAGSZ);
 121                 break;
 122         }
 123         if (ret >= FLAGSZ)
 124                 return (conv_invalid_val(&dwarf_ehe_buf->inv_buf, flags, 0));
 125
 126         (void) strlcat(buf, MSG_ORIG(MSG_GBL_CSQBRKT), FLAGSZ);
 127         return (buf);
 128 }