truffle: agent/src/os/linux/symtab.c annotate

annotate agent/src/os/linux/symtab.c @ 3011:f00918f35c7f

inlining and runtime interface related changes: added codeSize() and compilerStorage() to RiMethod HotSpotMethodResolved uses reflective methods instead of vmIds and survives compilations HotSpotResolvedType.isInitialized not represented as field (can change) inlining stores graphs into method objects and reuses them

author	Lukas Stadler <lukas.stadler@jku.at>
date	Thu, 16 Jun 2011 20:36:17 +0200
parents	0a8e0d4345b3
children	f2512d89ad0c

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
2042 0a8e0d4345b3 7010068: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - first pass trims parents: 1552 diff changeset	2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
0 a61af66fc99e Initial load duke parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
a61af66fc99e Initial load duke parents: diff changeset	4 *
a61af66fc99e Initial load duke parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
a61af66fc99e Initial load duke parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
a61af66fc99e Initial load duke parents: diff changeset	7 * published by the Free Software Foundation.
a61af66fc99e Initial load duke parents: diff changeset	8 *
a61af66fc99e Initial load duke parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
a61af66fc99e Initial load duke parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
a61af66fc99e Initial load duke parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
a61af66fc99e Initial load duke parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
a61af66fc99e Initial load duke parents: diff changeset	13 * accompanied this code).
a61af66fc99e Initial load duke parents: diff changeset	14 *
a61af66fc99e Initial load duke parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
a61af66fc99e Initial load duke parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
a61af66fc99e Initial load duke parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
a61af66fc99e Initial load duke parents: diff changeset	18 *
1552 c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1294 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1294 diff changeset	20 * or visit www.oracle.com if you need additional information or have any
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1294 diff changeset	21 * questions.
0 a61af66fc99e Initial load duke parents: diff changeset	22 *
a61af66fc99e Initial load duke parents: diff changeset	23 */
a61af66fc99e Initial load duke parents: diff changeset	24
a61af66fc99e Initial load duke parents: diff changeset	25 #include <unistd.h>
a61af66fc99e Initial load duke parents: diff changeset	26 #include <sys/procfs.h>
a61af66fc99e Initial load duke parents: diff changeset	27 #include <search.h>
a61af66fc99e Initial load duke parents: diff changeset	28 #include <stdlib.h>
a61af66fc99e Initial load duke parents: diff changeset	29 #include <string.h>
a61af66fc99e Initial load duke parents: diff changeset	30 #include "symtab.h"
a61af66fc99e Initial load duke parents: diff changeset	31 #include "salibelf.h"
a61af66fc99e Initial load duke parents: diff changeset	32
a61af66fc99e Initial load duke parents: diff changeset	33
a61af66fc99e Initial load duke parents: diff changeset	34 // ----------------------------------------------------
a61af66fc99e Initial load duke parents: diff changeset	35 // functions for symbol lookups
a61af66fc99e Initial load duke parents: diff changeset	36 // ----------------------------------------------------
a61af66fc99e Initial load duke parents: diff changeset	37
a61af66fc99e Initial load duke parents: diff changeset	38 struct elf_section {
a61af66fc99e Initial load duke parents: diff changeset	39 ELF_SHDR *c_shdr;
a61af66fc99e Initial load duke parents: diff changeset	40 void *c_data;
a61af66fc99e Initial load duke parents: diff changeset	41 };
a61af66fc99e Initial load duke parents: diff changeset	42
a61af66fc99e Initial load duke parents: diff changeset	43 struct elf_symbol {
a61af66fc99e Initial load duke parents: diff changeset	44 char *name;
a61af66fc99e Initial load duke parents: diff changeset	45 uintptr_t offset;
a61af66fc99e Initial load duke parents: diff changeset	46 uintptr_t size;
a61af66fc99e Initial load duke parents: diff changeset	47 };
a61af66fc99e Initial load duke parents: diff changeset	48
a61af66fc99e Initial load duke parents: diff changeset	49 typedef struct symtab {
a61af66fc99e Initial load duke parents: diff changeset	50 char *strs;
a61af66fc99e Initial load duke parents: diff changeset	51 size_t num_symbols;
a61af66fc99e Initial load duke parents: diff changeset	52 struct elf_symbol *symbols;
a61af66fc99e Initial load duke parents: diff changeset	53 struct hsearch_data *hash_table;
a61af66fc99e Initial load duke parents: diff changeset	54 } symtab_t;
a61af66fc99e Initial load duke parents: diff changeset	55
1294 7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	56
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	57 // Directory that contains global debuginfo files. In theory it
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	58 // should be possible to change this, but in a Java environment there
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	59 // is no obvious place to put a user interface to do it. Maybe this
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	60 // could be set with an environment variable.
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	61 static const char debug_file_directory[] = "/usr/lib/debug";
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	62
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	63 /* The CRC used in gnu_debuglink, retrieved from
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	64 http://sourceware.org/gdb/current/onlinedocs/gdb/Separate-Debug-Files.html#Separate-Debug-Files. */
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	65 unsigned int gnu_debuglink_crc32 (unsigned int crc,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	66 unsigned char *buf, size_t len)
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	67 {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	68 static const unsigned int crc32_table[256] =
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	69 {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	70 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	71 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	72 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	73 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	74 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	75 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	76 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	77 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	78 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	79 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	80 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	81 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	82 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	83 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	84 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	85 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	86 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	87 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	88 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	89 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	90 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	91 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	92 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	93 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	94 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	95 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	96 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	97 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	98 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	99 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	100 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	101 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	102 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	103 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	104 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	105 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	106 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	107 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	108 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	109 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	110 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	111 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	112 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	113 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	114 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	115 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	116 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	117 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	118 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	119 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	120 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	121 0x2d02ef8d
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	122 };
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	123 unsigned char *end;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	124
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	125 crc = ~crc & 0xffffffff;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	126 for (end = buf + len; buf < end; ++buf)
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	127 crc = crc32_table[(crc ^ *buf) & 0xff] ^ (crc >> 8);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	128 return ~crc & 0xffffffff;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	129 }
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	130
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	131 /* Open a debuginfo file and check its CRC. If it exists and the CRC
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	132 matches return its fd. */
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	133 static int
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	134 open_debug_file (const char *pathname, unsigned int crc)
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	135 {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	136 unsigned int file_crc = 0;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	137 unsigned char buffer[8 * 1024];
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	138
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	139 int fd = pathmap_open(pathname);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	140
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	141 if (fd < 0)
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	142 return -1;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	143
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	144 lseek(fd, 0, SEEK_SET);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	145
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	146 for (;;) {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	147 int len = read(fd, buffer, sizeof buffer);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	148 if (len <= 0)
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	149 break;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	150 file_crc = gnu_debuglink_crc32(file_crc, buffer, len);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	151 }
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	152
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	153 if (crc == file_crc)
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	154 return fd;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	155 else {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	156 close(fd);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	157 return -1;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	158 }
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	159 }
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	160
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	161 /* Find an ELF section. */
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	162 static struct elf_section find_section_by_name(char name,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	163 int fd,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	164 ELF_EHDR *ehdr,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	165 ELF_SHDR *shbuf,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	166 struct elf_section *scn_cache)
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	167 {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	168 ELF_SHDR* cursct = NULL;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	169 char *strtab;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	170 int cnt;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	171
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	172 if (scn_cache[ehdr->e_shstrndx].c_data == NULL) {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	173 if ((scn_cache[ehdr->e_shstrndx].c_data
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	174 = read_section_data(fd, ehdr, cursct)) == NULL) {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	175 return NULL;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	176 }
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	177 }
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	178
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	179 strtab = scn_cache[ehdr->e_shstrndx].c_data;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	180
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	181 for (cursct = shbuf, cnt = 0;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	182 cnt < ehdr->e_shnum;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	183 cnt++, cursct++) {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	184 if (strcmp(cursct->sh_name + strtab, name) == 0) {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	185 scn_cache[cnt].c_data = read_section_data(fd, ehdr, cursct);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	186 return &scn_cache[cnt];
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	187 }
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	188 }
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	189
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	190 return NULL;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	191 }
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	192
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	193 /* Look for a ".gnu_debuglink" section. If one exists, try to open a
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	194 suitable debuginfo file. */
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	195 static int open_file_from_debug_link(const char *name,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	196 int fd,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	197 ELF_EHDR *ehdr,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	198 ELF_SHDR *shbuf,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	199 struct elf_section *scn_cache)
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	200 {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	201 int debug_fd;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	202 struct elf_section *debug_link = find_section_by_name(".gnu_debuglink", fd, ehdr,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	203 shbuf, scn_cache);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	204 if (debug_link == NULL)
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	205 return -1;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	206 char *debug_filename = debug_link->c_data;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	207 int offset = (strlen(debug_filename) + 4) >> 2;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	208 static unsigned int crc;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	209 crc = ((unsigned int*)debug_link->c_data)[offset];
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	210 char *debug_pathname = malloc(strlen(debug_filename)
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	211 + strlen(name)
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	212 + strlen(".debug/")
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	213 + strlen(debug_file_directory)
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	214 + 2);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	215 strcpy(debug_pathname, name);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	216 char *last_slash = strrchr(debug_pathname, '/');
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	217 if (last_slash == NULL)
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	218 return -1;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	219
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	220 /* Look in the same directory as the object. */
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	221 strcpy(last_slash+1, debug_filename);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	222
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	223 debug_fd = open_debug_file(debug_pathname, crc);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	224 if (debug_fd >= 0) {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	225 free(debug_pathname);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	226 return debug_fd;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	227 }
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	228
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	229 /* Look in a subdirectory named ".debug". */
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	230 strcpy(last_slash+1, ".debug/");
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	231 strcat(last_slash, debug_filename);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	232
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	233 debug_fd = open_debug_file(debug_pathname, crc);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	234 if (debug_fd >= 0) {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	235 free(debug_pathname);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	236 return debug_fd;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	237 }
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	238
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	239 /* Look in /usr/lib/debug + the full pathname. */
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	240 strcpy(debug_pathname, debug_file_directory);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	241 strcat(debug_pathname, name);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	242 last_slash = strrchr(debug_pathname, '/');
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	243 strcpy(last_slash+1, debug_filename);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	244
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	245 debug_fd = open_debug_file(debug_pathname, crc);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	246 if (debug_fd >= 0) {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	247 free(debug_pathname);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	248 return debug_fd;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	249 }
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	250
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	251 free(debug_pathname);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	252 return -1;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	253 }
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	254
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	255 static struct symtab* build_symtab_internal(int fd, const char *filename, bool try_debuginfo);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	256
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	257 /* Look for a ".gnu_debuglink" section. If one exists, try to open a
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	258 suitable debuginfo file and read a symbol table from it. */
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	259 static struct symtab build_symtab_from_debug_link(const char name,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	260 int fd,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	261 ELF_EHDR *ehdr,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	262 ELF_SHDR *shbuf,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	263 struct elf_section *scn_cache)
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	264 {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	265 fd = open_file_from_debug_link(name, fd, ehdr, shbuf, scn_cache);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	266
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	267 if (fd >= 0) {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	268 struct symtab symtab = build_symtab_internal(fd, NULL, / try_debuginfo */ false);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	269 close(fd);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	270 return symtab;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	271 }
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	272
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	273 return NULL;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	274 }
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	275
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	276 // Given a build_id, find the associated debuginfo file
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	277 static char *
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	278 build_id_to_debug_filename (size_t size, unsigned char *data)
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	279 {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	280 char filename, s;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	281
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	282 filename = malloc(strlen (debug_file_directory) + (sizeof "/.build-id/" - 1) + 1
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	283 + 2 * size + (sizeof ".debug" - 1) + 1);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	284 s = filename + sprintf (filename, "%s/.build-id/", debug_file_directory);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	285 if (size > 0)
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	286 {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	287 size--;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	288 s += sprintf (s, "%02x", *data++);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	289 }
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	290 if (size > 0)
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	291 *s++ = '/';
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	292 while (size-- > 0)
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	293 s += sprintf (s, "%02x", *data++);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	294 strcpy (s, ".debug");
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	295
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	296 return filename;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	297 }
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	298
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	299 // Read a build ID note. Try to open any associated debuginfo file
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	300 // and return its symtab
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	301 static struct symtab* build_symtab_from_build_id(Elf64_Nhdr *note)
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	302 {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	303 int fd;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	304 struct symtab *symtab = NULL;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	305
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	306 unsigned char *bytes
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	307 = (unsigned char*)(note+1) + note->n_namesz;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	308 unsigned char *filename
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	309 = (build_id_to_debug_filename (note->n_descsz, bytes));
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	310
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	311 fd = pathmap_open(filename);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	312 if (fd >= 0) {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	313 symtab = build_symtab_internal(fd, NULL, /* try_debuginfo */ false);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	314 close(fd);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	315 }
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	316 free(filename);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	317
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	318 return symtab;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	319 }
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	320
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	321 // read symbol table from given fd. If try_debuginfo) is true, also
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	322 // try to open an associated debuginfo file
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	323 static struct symtab* build_symtab_internal(int fd, const char *filename, bool try_debuginfo) {
0 a61af66fc99e Initial load duke parents: diff changeset	324 ELF_EHDR ehdr;
a61af66fc99e Initial load duke parents: diff changeset	325 char *names = NULL;
a61af66fc99e Initial load duke parents: diff changeset	326 struct symtab* symtab = NULL;
a61af66fc99e Initial load duke parents: diff changeset	327
a61af66fc99e Initial load duke parents: diff changeset	328 // Reading of elf header
a61af66fc99e Initial load duke parents: diff changeset	329 struct elf_section *scn_cache = NULL;
a61af66fc99e Initial load duke parents: diff changeset	330 int cnt = 0;
a61af66fc99e Initial load duke parents: diff changeset	331 ELF_SHDR* shbuf = NULL;
a61af66fc99e Initial load duke parents: diff changeset	332 ELF_SHDR* cursct = NULL;
a61af66fc99e Initial load duke parents: diff changeset	333 ELF_PHDR* phbuf = NULL;
a61af66fc99e Initial load duke parents: diff changeset	334 ELF_PHDR* phdr = NULL;
1294 7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	335 int sym_section = SHT_DYNSYM;
0 a61af66fc99e Initial load duke parents: diff changeset	336
a61af66fc99e Initial load duke parents: diff changeset	337 uintptr_t baseaddr = (uintptr_t)-1;
a61af66fc99e Initial load duke parents: diff changeset	338
a61af66fc99e Initial load duke parents: diff changeset	339 lseek(fd, (off_t)0L, SEEK_SET);
a61af66fc99e Initial load duke parents: diff changeset	340 if (! read_elf_header(fd, &ehdr)) {
a61af66fc99e Initial load duke parents: diff changeset	341 // not an elf
a61af66fc99e Initial load duke parents: diff changeset	342 return NULL;
a61af66fc99e Initial load duke parents: diff changeset	343 }
a61af66fc99e Initial load duke parents: diff changeset	344
a61af66fc99e Initial load duke parents: diff changeset	345 // read ELF header
a61af66fc99e Initial load duke parents: diff changeset	346 if ((shbuf = read_section_header_table(fd, &ehdr)) == NULL) {
a61af66fc99e Initial load duke parents: diff changeset	347 goto quit;
a61af66fc99e Initial load duke parents: diff changeset	348 }
a61af66fc99e Initial load duke parents: diff changeset	349
a61af66fc99e Initial load duke parents: diff changeset	350 baseaddr = find_base_address(fd, &ehdr);
a61af66fc99e Initial load duke parents: diff changeset	351
a61af66fc99e Initial load duke parents: diff changeset	352 scn_cache = (struct elf_section *)
a61af66fc99e Initial load duke parents: diff changeset	353 calloc(ehdr.e_shnum * sizeof(struct elf_section), 1);
a61af66fc99e Initial load duke parents: diff changeset	354 if (scn_cache == NULL) {
a61af66fc99e Initial load duke parents: diff changeset	355 goto quit;
a61af66fc99e Initial load duke parents: diff changeset	356 }
a61af66fc99e Initial load duke parents: diff changeset	357
a61af66fc99e Initial load duke parents: diff changeset	358 for (cursct = shbuf, cnt = 0; cnt < ehdr.e_shnum; cnt++) {
a61af66fc99e Initial load duke parents: diff changeset	359 scn_cache[cnt].c_shdr = cursct;
1294 7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	360 if (cursct->sh_type == SHT_SYMTAB \|\| cursct->sh_type == SHT_STRTAB
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	361 \|\| cursct->sh_type == SHT_NOTE \|\| cursct->sh_type == SHT_DYNSYM) {
0 a61af66fc99e Initial load duke parents: diff changeset	362 if ( (scn_cache[cnt].c_data = read_section_data(fd, &ehdr, cursct)) == NULL) {
a61af66fc99e Initial load duke parents: diff changeset	363 goto quit;
a61af66fc99e Initial load duke parents: diff changeset	364 }
a61af66fc99e Initial load duke parents: diff changeset	365 }
1294 7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	366 if (cursct->sh_type == SHT_SYMTAB) {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	367 // Full symbol table available so use that
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	368 sym_section = cursct->sh_type;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	369 }
0 a61af66fc99e Initial load duke parents: diff changeset	370 cursct++;
a61af66fc99e Initial load duke parents: diff changeset	371 }
a61af66fc99e Initial load duke parents: diff changeset	372
a61af66fc99e Initial load duke parents: diff changeset	373 for (cnt = 1; cnt < ehdr.e_shnum; cnt++) {
a61af66fc99e Initial load duke parents: diff changeset	374 ELF_SHDR *shdr = scn_cache[cnt].c_shdr;
a61af66fc99e Initial load duke parents: diff changeset	375
1294 7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	376 if (shdr->sh_type == sym_section) {
0 a61af66fc99e Initial load duke parents: diff changeset	377 ELF_SYM *syms;
a61af66fc99e Initial load duke parents: diff changeset	378 int j, n, rslt;
a61af66fc99e Initial load duke parents: diff changeset	379 size_t size;
a61af66fc99e Initial load duke parents: diff changeset	380
a61af66fc99e Initial load duke parents: diff changeset	381 // FIXME: there could be multiple data buffers associated with the
a61af66fc99e Initial load duke parents: diff changeset	382 // same ELF section. Here we can handle only one buffer. See man page
a61af66fc99e Initial load duke parents: diff changeset	383 // for elf_getdata on Solaris.
a61af66fc99e Initial load duke parents: diff changeset	384
a61af66fc99e Initial load duke parents: diff changeset	385 // guarantee(symtab == NULL, "multiple symtab");
a61af66fc99e Initial load duke parents: diff changeset	386 symtab = (struct symtab*)calloc(1, sizeof(struct symtab));
a61af66fc99e Initial load duke parents: diff changeset	387 if (symtab == NULL) {
a61af66fc99e Initial load duke parents: diff changeset	388 goto quit;
a61af66fc99e Initial load duke parents: diff changeset	389 }
a61af66fc99e Initial load duke parents: diff changeset	390 // the symbol table
a61af66fc99e Initial load duke parents: diff changeset	391 syms = (ELF_SYM *)scn_cache[cnt].c_data;
a61af66fc99e Initial load duke parents: diff changeset	392
a61af66fc99e Initial load duke parents: diff changeset	393 // number of symbols
a61af66fc99e Initial load duke parents: diff changeset	394 n = shdr->sh_size / shdr->sh_entsize;
a61af66fc99e Initial load duke parents: diff changeset	395
a61af66fc99e Initial load duke parents: diff changeset	396 // create hash table, we use hcreate_r, hsearch_r and hdestroy_r to
a61af66fc99e Initial load duke parents: diff changeset	397 // manipulate the hash table.
a61af66fc99e Initial load duke parents: diff changeset	398 symtab->hash_table = (struct hsearch_data*) calloc(1, sizeof(struct hsearch_data));
a61af66fc99e Initial load duke parents: diff changeset	399 rslt = hcreate_r(n, symtab->hash_table);
a61af66fc99e Initial load duke parents: diff changeset	400 // guarantee(rslt, "unexpected failure: hcreate_r");
a61af66fc99e Initial load duke parents: diff changeset	401
a61af66fc99e Initial load duke parents: diff changeset	402 // shdr->sh_link points to the section that contains the actual strings
a61af66fc99e Initial load duke parents: diff changeset	403 // for symbol names. the st_name field in ELF_SYM is just the
a61af66fc99e Initial load duke parents: diff changeset	404 // string table index. we make a copy of the string table so the
a61af66fc99e Initial load duke parents: diff changeset	405 // strings will not be destroyed by elf_end.
a61af66fc99e Initial load duke parents: diff changeset	406 size = scn_cache[shdr->sh_link].c_shdr->sh_size;
a61af66fc99e Initial load duke parents: diff changeset	407 symtab->strs = (char *)malloc(size);
a61af66fc99e Initial load duke parents: diff changeset	408 memcpy(symtab->strs, scn_cache[shdr->sh_link].c_data, size);
a61af66fc99e Initial load duke parents: diff changeset	409
a61af66fc99e Initial load duke parents: diff changeset	410 // allocate memory for storing symbol offset and size;
a61af66fc99e Initial load duke parents: diff changeset	411 symtab->num_symbols = n;
a61af66fc99e Initial load duke parents: diff changeset	412 symtab->symbols = (struct elf_symbol *)calloc(n , sizeof(struct elf_symbol));
a61af66fc99e Initial load duke parents: diff changeset	413
a61af66fc99e Initial load duke parents: diff changeset	414 // copy symbols info our symtab and enter them info the hash table
a61af66fc99e Initial load duke parents: diff changeset	415 for (j = 0; j < n; j++, syms++) {
a61af66fc99e Initial load duke parents: diff changeset	416 ENTRY item, *ret;
a61af66fc99e Initial load duke parents: diff changeset	417 char *sym_name = symtab->strs + syms->st_name;
a61af66fc99e Initial load duke parents: diff changeset	418
a61af66fc99e Initial load duke parents: diff changeset	419 // skip non-object and non-function symbols
a61af66fc99e Initial load duke parents: diff changeset	420 int st_type = ELF_ST_TYPE(syms->st_info);
a61af66fc99e Initial load duke parents: diff changeset	421 if ( st_type != STT_FUNC && st_type != STT_OBJECT)
a61af66fc99e Initial load duke parents: diff changeset	422 continue;
a61af66fc99e Initial load duke parents: diff changeset	423 // skip empty strings and undefined symbols
a61af66fc99e Initial load duke parents: diff changeset	424 if (*sym_name == '\0' \|\| syms->st_shndx == SHN_UNDEF) continue;
a61af66fc99e Initial load duke parents: diff changeset	425
a61af66fc99e Initial load duke parents: diff changeset	426 symtab->symbols[j].name = sym_name;
a61af66fc99e Initial load duke parents: diff changeset	427 symtab->symbols[j].offset = syms->st_value - baseaddr;
a61af66fc99e Initial load duke parents: diff changeset	428 symtab->symbols[j].size = syms->st_size;
a61af66fc99e Initial load duke parents: diff changeset	429
a61af66fc99e Initial load duke parents: diff changeset	430 item.key = sym_name;
a61af66fc99e Initial load duke parents: diff changeset	431 item.data = (void *)&(symtab->symbols[j]);
a61af66fc99e Initial load duke parents: diff changeset	432
a61af66fc99e Initial load duke parents: diff changeset	433 hsearch_r(item, ENTER, &ret, symtab->hash_table);
a61af66fc99e Initial load duke parents: diff changeset	434 }
a61af66fc99e Initial load duke parents: diff changeset	435 }
a61af66fc99e Initial load duke parents: diff changeset	436 }
a61af66fc99e Initial load duke parents: diff changeset	437
1294 7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	438 // Look for a separate debuginfo file.
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	439 if (try_debuginfo) {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	440
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	441 // We prefer a debug symtab to an object's own symtab, so look in
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	442 // the debuginfo file. We stash a copy of the old symtab in case
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	443 // there is no debuginfo.
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	444 struct symtab* prev_symtab = symtab;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	445 symtab = NULL;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	446
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	447 #ifdef NT_GNU_BUILD_ID
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	448 // First we look for a Build ID
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	449 for (cursct = shbuf, cnt = 0;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	450 symtab == NULL && cnt < ehdr.e_shnum;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	451 cnt++) {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	452 if (cursct->sh_type == SHT_NOTE) {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	453 Elf64_Nhdr note = (Elf64_Nhdr )scn_cache[cnt].c_data;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	454 if (note->n_type == NT_GNU_BUILD_ID) {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	455 symtab = build_symtab_from_build_id(note);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	456 }
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	457 }
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	458 cursct++;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	459 }
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	460 #endif
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	461
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	462 // Then, if that doesn't work, the debug link
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	463 if (symtab == NULL) {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	464 symtab = build_symtab_from_debug_link(filename, fd, &ehdr, shbuf,
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	465 scn_cache);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	466 }
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	467
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	468 // If we still haven't found a symtab, use the object's own symtab.
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	469 if (symtab != NULL) {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	470 if (prev_symtab != NULL)
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	471 destroy_symtab(prev_symtab);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	472 } else {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	473 symtab = prev_symtab;
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	474 }
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	475 }
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	476
0 a61af66fc99e Initial load duke parents: diff changeset	477 quit:
a61af66fc99e Initial load duke parents: diff changeset	478 if (shbuf) free(shbuf);
a61af66fc99e Initial load duke parents: diff changeset	479 if (phbuf) free(phbuf);
a61af66fc99e Initial load duke parents: diff changeset	480 if (scn_cache) {
a61af66fc99e Initial load duke parents: diff changeset	481 for (cnt = 0; cnt < ehdr.e_shnum; cnt++) {
a61af66fc99e Initial load duke parents: diff changeset	482 if (scn_cache[cnt].c_data != NULL) {
a61af66fc99e Initial load duke parents: diff changeset	483 free(scn_cache[cnt].c_data);
a61af66fc99e Initial load duke parents: diff changeset	484 }
a61af66fc99e Initial load duke parents: diff changeset	485 }
a61af66fc99e Initial load duke parents: diff changeset	486 free(scn_cache);
a61af66fc99e Initial load duke parents: diff changeset	487 }
a61af66fc99e Initial load duke parents: diff changeset	488 return symtab;
a61af66fc99e Initial load duke parents: diff changeset	489 }
a61af66fc99e Initial load duke parents: diff changeset	490
1294 7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	491 struct symtab* build_symtab(int fd, const char *filename) {
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	492 return build_symtab_internal(fd, filename, /* try_debuginfo */ true);
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	493 }
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	494
7de45b5044c3 6932270: Allow Java's ELF symtab reader to use separate debuginfo files never parents: 0 diff changeset	495
0 a61af66fc99e Initial load duke parents: diff changeset	496 void destroy_symtab(struct symtab* symtab) {
a61af66fc99e Initial load duke parents: diff changeset	497 if (!symtab) return;
a61af66fc99e Initial load duke parents: diff changeset	498 if (symtab->strs) free(symtab->strs);
a61af66fc99e Initial load duke parents: diff changeset	499 if (symtab->symbols) free(symtab->symbols);
a61af66fc99e Initial load duke parents: diff changeset	500 if (symtab->hash_table) {
a61af66fc99e Initial load duke parents: diff changeset	501 hdestroy_r(symtab->hash_table);
a61af66fc99e Initial load duke parents: diff changeset	502 free(symtab->hash_table);
a61af66fc99e Initial load duke parents: diff changeset	503 }
a61af66fc99e Initial load duke parents: diff changeset	504 free(symtab);
a61af66fc99e Initial load duke parents: diff changeset	505 }
a61af66fc99e Initial load duke parents: diff changeset	506
a61af66fc99e Initial load duke parents: diff changeset	507 uintptr_t search_symbol(struct symtab* symtab, uintptr_t base,
a61af66fc99e Initial load duke parents: diff changeset	508 const char sym_name, int sym_size) {
a61af66fc99e Initial load duke parents: diff changeset	509 ENTRY item;
a61af66fc99e Initial load duke parents: diff changeset	510 ENTRY* ret = NULL;
a61af66fc99e Initial load duke parents: diff changeset	511
a61af66fc99e Initial load duke parents: diff changeset	512 // library does not have symbol table
a61af66fc99e Initial load duke parents: diff changeset	513 if (!symtab \|\| !symtab->hash_table)
a61af66fc99e Initial load duke parents: diff changeset	514 return (uintptr_t)NULL;
a61af66fc99e Initial load duke parents: diff changeset	515
a61af66fc99e Initial load duke parents: diff changeset	516 item.key = (char*) strdup(sym_name);
a61af66fc99e Initial load duke parents: diff changeset	517 hsearch_r(item, FIND, &ret, symtab->hash_table);
a61af66fc99e Initial load duke parents: diff changeset	518 if (ret) {
a61af66fc99e Initial load duke parents: diff changeset	519 struct elf_symbol * sym = (struct elf_symbol *)(ret->data);
a61af66fc99e Initial load duke parents: diff changeset	520 uintptr_t rslt = (uintptr_t) ((char*)base + sym->offset);
a61af66fc99e Initial load duke parents: diff changeset	521 if (sym_size) *sym_size = sym->size;
a61af66fc99e Initial load duke parents: diff changeset	522 free(item.key);
a61af66fc99e Initial load duke parents: diff changeset	523 return rslt;
a61af66fc99e Initial load duke parents: diff changeset	524 }
a61af66fc99e Initial load duke parents: diff changeset	525
a61af66fc99e Initial load duke parents: diff changeset	526 quit:
a61af66fc99e Initial load duke parents: diff changeset	527 free(item.key);
a61af66fc99e Initial load duke parents: diff changeset	528 return (uintptr_t) NULL;
a61af66fc99e Initial load duke parents: diff changeset	529 }
a61af66fc99e Initial load duke parents: diff changeset	530
a61af66fc99e Initial load duke parents: diff changeset	531 const char* nearest_symbol(struct symtab* symtab, uintptr_t offset,
a61af66fc99e Initial load duke parents: diff changeset	532 uintptr_t* poffset) {
a61af66fc99e Initial load duke parents: diff changeset	533 int n = 0;
a61af66fc99e Initial load duke parents: diff changeset	534 if (!symtab) return NULL;
a61af66fc99e Initial load duke parents: diff changeset	535 for (; n < symtab->num_symbols; n++) {
a61af66fc99e Initial load duke parents: diff changeset	536 struct elf_symbol* sym = &(symtab->symbols[n]);
a61af66fc99e Initial load duke parents: diff changeset	537 if (sym->name != NULL &&
a61af66fc99e Initial load duke parents: diff changeset	538 offset >= sym->offset && offset < sym->offset + sym->size) {
a61af66fc99e Initial load duke parents: diff changeset	539 if (poffset) *poffset = (offset - sym->offset);
a61af66fc99e Initial load duke parents: diff changeset	540 return sym->name;
a61af66fc99e Initial load duke parents: diff changeset	541 }
a61af66fc99e Initial load duke parents: diff changeset	542 }
a61af66fc99e Initial load duke parents: diff changeset	543 return NULL;
a61af66fc99e Initial load duke parents: diff changeset	544 }

Mercurial > hg > truffle

annotate agent/src/os/linux/symtab.c @ 3011:f00918f35c7f