jdk-sandbox: comparison hotspot/agent/src/os/bsd/ps

equal deleted inserted replaced

-:50da9e5eb858
+:032b310a3e2f
 /*
-* Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
+* Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 #include <unistd.h>
 #include <fcntl.h>
 #include <string.h>
 #include <stdlib.h>
 #include <stddef.h>
-#include <elf.h>
-#include <link.h>
 #include "libproc_impl.h"
-#include "salibelf.h"
+#ifdef __APPLE__
+#include "sun_jvm_hotspot_debugger_amd64_AMD64ThreadContext.h"
+#endif
 // This file has the libproc implementation to read core files.
 // For live processes, refer to ps_proc.c. Portions of this is adapted
 // /modelled after Solaris libproc.so (in particular Pcore.c)
 //----------------------------------------------------------------------
 // ps_prochandle cleanup helper functions
 // close all file descriptors
-static void close_elf_files(struct ps_prochandle* ph) {
+static void close_files(struct ps_prochandle* ph) {
 lib_info* lib = NULL;
+// close core file descriptor
-// close core file descriptor
+if (ph->core->core_fd >= 0)
-if (ph->core->core_fd >= 0)
+close(ph->core->core_fd);
-close(ph->core->core_fd);
+// close exec file descriptor
-// close exec file descriptor
+if (ph->core->exec_fd >= 0)
-if (ph->core->exec_fd >= 0)
+close(ph->core->exec_fd);
-close(ph->core->exec_fd);
+// close interp file descriptor
-// close interp file descriptor
+if (ph->core->interp_fd >= 0)
-if (ph->core->interp_fd >= 0)
+close(ph->core->interp_fd);
-close(ph->core->interp_fd);
+// close class share archive file
-// close class share archive file
+if (ph->core->classes_jsa_fd >= 0)
-if (ph->core->classes_jsa_fd >= 0)
+close(ph->core->classes_jsa_fd);
-close(ph->core->classes_jsa_fd);
+// close all library file descriptors
-// close all library file descriptors
+lib = ph->libs;
-lib = ph->libs;
+while (lib) {
-while (lib) {
+int fd = lib->fd;
-int fd = lib->fd;
+if (fd >= 0 && fd != ph->core->exec_fd) {
-if (fd >= 0 && fd != ph->core->exec_fd) close(fd);
+close(fd);
-lib = lib->next;
+}
-}
+lib = lib->next;
+}
 }
 // clean all map_info stuff
 static void destroy_map_info(struct ps_prochandle* ph) {
 map_info* map = ph->core->maps;
 while (map) {
 map_info* next = map->next;
 free(map);
 map = next;
 }
 if (ph->core->map_array) {
 free(ph->core->map_array);
 }
 // Part of the class sharing workaround
 map = ph->core->class_share_maps;
 while (map) {
 map_info* next = map->next;
 free(map);
 map = next;
 }
 }
 // ps_prochandle operations
 static void core_release(struct ps_prochandle* ph) {
 if (ph->core) {
-close_elf_files(ph);
+close_files(ph);
 destroy_map_info(ph);
 free(ph->core);
 }
 }
 static map_info* allocate_init_map(int fd, off_t offset, uintptr_t vaddr, size_t memsz) {
 map_info* map;
 if ( (map = (map_info*) calloc(1, sizeof(map_info))) == NULL) {
 print_debug("can't allocate memory for map_info\n");
 return NULL;
 }
 // initialize map
 map->fd     = fd;
 map->offset = offset;
 map->vaddr  = vaddr;
 map->memsz  = memsz;
 return map;
 }
 // add map info with given fd, offset, vaddr and memsz
 static map_info* add_map_info(struct ps_prochandle* ph, int fd, off_t offset,
 uintptr_t vaddr, size_t memsz) {
 map_info* map;
 if ((map = allocate_init_map(fd, offset, vaddr, memsz)) == NULL) {
 return NULL;
 }
 // add this to map list
 map->next  = ph->core->maps;
 ph->core->maps   = map;
 ph->core->num_maps++;
 return map;
 }
 // Part of the class sharing workaround
 static map_info* add_class_share_map_info(struct ps_prochandle* ph, off_t offset,
 uintptr_t vaddr, size_t memsz) {
 map_info* map;
 if ((map = allocate_init_map(ph->core->classes_jsa_fd,
 offset, vaddr, memsz)) == NULL) {
 return NULL;
 }
 map->next = ph->core->class_share_maps;
 ph->core->class_share_maps = map;
 return map;
 }
 // Return the map_info for the given virtual address.  We keep a sorted
 // array of pointers in ph->map_array, so we can binary search.
 static map_info* core_lookup(struct ps_prochandle *ph, uintptr_t addr)
 {
 int mid, lo = 0, hi = ph->core->num_maps - 1;
 map_info *mp;
 while (hi - lo > 1) {
 mid = (lo + hi) / 2;
-if (addr >= ph->core->map_array[mid]->vaddr)
+if (addr >= ph->core->map_array[mid]->vaddr) {
 lo = mid;
-else
+} else {
 hi = mid;
 }
+}
-if (addr < ph->core->map_array[hi]->vaddr)
-mp = ph->core->map_array[lo];
+if (addr < ph->core->map_array[hi]->vaddr) {
-else
+mp = ph->core->map_array[lo];
-mp = ph->core->map_array[hi];
+} else {
+mp = ph->core->map_array[hi];
-if (addr >= mp->vaddr && addr < mp->vaddr + mp->memsz)
+}
+if (addr >= mp->vaddr && addr < mp->vaddr + mp->memsz) {
+return (mp);
+}
+// Part of the class sharing workaround
+// Unfortunately, we have no way of detecting -Xshare state.
+// Check out the share maps atlast, if we don't find anywhere.
+// This is done this way so to avoid reading share pages
+// ahead of other normal maps. For eg. with -Xshare:off we don't
+// want to prefer class sharing data to data from core.
+mp = ph->core->class_share_maps;
+if (mp) {
+print_debug("can't locate map_info at 0x%lx, trying class share maps\n", addr);
+}
+while (mp) {
+if (addr >= mp->vaddr && addr < mp->vaddr + mp->memsz) {
+print_debug("located map_info at 0x%lx from class share maps\n", addr);
 return (mp);
+}
+mp = mp->next;
-// Part of the class sharing workaround
+}
-// Unfortunately, we have no way of detecting -Xshare state.
-// Check out the share maps atlast, if we don't find anywhere.
+print_debug("can't locate map_info at 0x%lx\n", addr);
-// This is done this way so to avoid reading share pages
+return (NULL);
-// ahead of other normal maps. For eg. with -Xshare:off we don't
-// want to prefer class sharing data to data from core.
-mp = ph->core->class_share_maps;
-if (mp) {
-print_debug("can't locate map_info at 0x%lx, trying class share maps\n",
-addr);
-}
-while (mp) {
-if (addr >= mp->vaddr && addr < mp->vaddr + mp->memsz) {
-print_debug("located map_info at 0x%lx from class share maps\n",
-addr);
-return (mp);
-}
-mp = mp->next;
-}
-print_debug("can't locate map_info at 0x%lx\n", addr);
-return (NULL);
 }
 //---------------------------------------------------------------
 // Part of the class sharing workaround:
 //
 // Ignore the rest of the FileMapHeader. We don't need those fields here.
 };
 static bool read_jboolean(struct ps_prochandle* ph, uintptr_t addr, jboolean* pvalue) {
 jboolean i;
 if (ps_pread(ph, (psaddr_t) addr, &i, sizeof(i)) == PS_OK) {
 *pvalue = i;
 return true;
 } else {
 return false;
 }
 }
 static bool read_pointer(struct ps_prochandle* ph, uintptr_t addr, uintptr_t* pvalue) {
 uintptr_t uip;
-if (ps_pread(ph, (psaddr_t) addr, &uip, sizeof(uip)) == PS_OK) {
+if (ps_pread(ph, (psaddr_t) addr, (char *)&uip, sizeof(uip)) == PS_OK) {
 *pvalue = uip;
 return true;
 } else {
 return false;
 }
 }
 // used to read strings from debuggee
 static bool read_string(struct ps_prochandle* ph, uintptr_t addr, char* buf, size_t size) {
 size_t i = 0;
 char  c = ' ';
 while (c != '\0') {
-if (ps_pread(ph, (psaddr_t) addr, &c, sizeof(char)) != PS_OK)
+if (ps_pread(ph, (psaddr_t) addr, &c, sizeof(char)) != PS_OK) {
 return false;
-if (i < size - 1)
+}
-buf[i] = c;
+if (i < size - 1) {
-else // smaller buffer
+buf[i] = c;
-return false;
+} else {
-i++; addr++;
+// smaller buffer
-}
+return false;
+}
-buf[i] = '\0';
+i++; addr++;
-return true;
+}
-}
+buf[i] = '\0';
+return true;
+}
+#ifdef __APPLE__
+#define USE_SHARED_SPACES_SYM "_UseSharedSpaces"
+// mangled name of Arguments::SharedArchivePath
+#define SHARED_ARCHIVE_PATH_SYM "_ZN9Arguments17SharedArchivePathE"
+#else
 #define USE_SHARED_SPACES_SYM "UseSharedSpaces"
 // mangled name of Arguments::SharedArchivePath
-#define SHARED_ARCHIVE_PATH_SYM "_ZN9Arguments17SharedArchivePathE"
+#define SHARED_ARCHIVE_PATH_SYM "__ZN9Arguments17SharedArchivePathE"
+#endif // __APPLE_
 static bool init_classsharing_workaround(struct ps_prochandle* ph) {
-lib_info* lib = ph->libs;
+int m;
-while (lib != NULL) {
+size_t n;
-// we are iterating over shared objects from the core dump. look for
+lib_info* lib = ph->libs;
-// libjvm[_g].so.
+while (lib != NULL) {
-const char *jvm_name = 0;
+// we are iterating over shared objects from the core dump. look for
-if ((jvm_name = strstr(lib->name, "/libjvm.so")) != 0 ||
+// libjvm[_g].so.
-(jvm_name = strstr(lib->name, "/libjvm_g.so")) != 0) {
+const char *jvm_name = 0;
-char classes_jsa[PATH_MAX];
+#ifdef __APPLE__
-struct FileMapHeader header;
+if ((jvm_name = strstr(lib->name, "/libjvm.dylib")) != 0 ||
-size_t n = 0;
+(jvm_name = strstr(lib->name, "/libjvm_g.dylib")) != 0)
-int fd = -1, m = 0;
+#else
-uintptr_t base = 0, useSharedSpacesAddr = 0;
+if ((jvm_name = strstr(lib->name, "/libjvm.so")) != 0 ||
-uintptr_t sharedArchivePathAddrAddr = 0, sharedArchivePathAddr = 0;
+(jvm_name = strstr(lib->name, "/libjvm_g.so")) != 0)
-jboolean useSharedSpaces = 0;
+#endif // __APPLE__
+{
-memset(classes_jsa, 0, sizeof(classes_jsa));
+char classes_jsa[PATH_MAX];
-jvm_name = lib->name;
+struct FileMapHeader header;
-useSharedSpacesAddr = lookup_symbol(ph, jvm_name, USE_SHARED_SPACES_SYM);
+int fd = -1;
-if (useSharedSpacesAddr == 0) {
+uintptr_t base = 0, useSharedSpacesAddr = 0;
-print_debug("can't lookup 'UseSharedSpaces' flag\n");
+uintptr_t sharedArchivePathAddrAddr = 0, sharedArchivePathAddr = 0;
-return false;
+jboolean useSharedSpaces = 0;
-}
+memset(classes_jsa, 0, sizeof(classes_jsa));
-// Hotspot vm types are not exported to build this library. So
+jvm_name = lib->name;
-// using equivalent type jboolean to read the value of
+useSharedSpacesAddr = lookup_symbol(ph, jvm_name, USE_SHARED_SPACES_SYM);
-// UseSharedSpaces which is same as hotspot type "bool".
+if (useSharedSpacesAddr == 0) {
-if (read_jboolean(ph, useSharedSpacesAddr, &useSharedSpaces) != true) {
+print_debug("can't lookup 'UseSharedSpaces' flag\n");
-print_debug("can't read the value of 'UseSharedSpaces' flag\n");
+return false;
-return false;
+}
-}
+// Hotspot vm types are not exported to build this library. So
-if ((int)useSharedSpaces == 0) {
+// using equivalent type jboolean to read the value of
-print_debug("UseSharedSpaces is false, assuming -Xshare:off!\n");
+// UseSharedSpaces which is same as hotspot type "bool".
-return true;
+if (read_jboolean(ph, useSharedSpacesAddr, &useSharedSpaces) != true) {
-}
+print_debug("can't read the value of 'UseSharedSpaces' flag\n");
+return false;
-sharedArchivePathAddrAddr = lookup_symbol(ph, jvm_name, SHARED_ARCHIVE_PATH_SYM);
+}
-if (sharedArchivePathAddrAddr == 0) {
-print_debug("can't lookup shared archive path symbol\n");
+if ((int)useSharedSpaces == 0) {
-return false;
+print_debug("UseSharedSpaces is false, assuming -Xshare:off!\n");
-}
+return true;
+}
-if (read_pointer(ph, sharedArchivePathAddrAddr, &sharedArchivePathAddr) != true) {
-print_debug("can't read shared archive path pointer\n");
+sharedArchivePathAddrAddr = lookup_symbol(ph, jvm_name, SHARED_ARCHIVE_PATH_SYM);
-return false;
+if (sharedArchivePathAddrAddr == 0) {
-}
+print_debug("can't lookup shared archive path symbol\n");
+return false;
-if (read_string(ph, sharedArchivePathAddr, classes_jsa, sizeof(classes_jsa)) != true) {
+}
-print_debug("can't read shared archive path value\n");
-return false;
+if (read_pointer(ph, sharedArchivePathAddrAddr, &sharedArchivePathAddr) != true) {
-}
+print_debug("can't read shared archive path pointer\n");
+return false;
-print_debug("looking for %s\n", classes_jsa);
+}
-// open the class sharing archive file
-fd = pathmap_open(classes_jsa);
+if (read_string(ph, sharedArchivePathAddr, classes_jsa, sizeof(classes_jsa)) != true) {
-if (fd < 0) {
+print_debug("can't read shared archive path value\n");
-print_debug("can't open %s!\n", classes_jsa);
+return false;
-ph->core->classes_jsa_fd = -1;
+}
-return false;
-} else {
+print_debug("looking for %s\n", classes_jsa);
-print_debug("opened %s\n", classes_jsa);
+// open the class sharing archive file
-}
+fd = pathmap_open(classes_jsa);
+if (fd < 0) {
-// read FileMapHeader from the file
+print_debug("can't open %s!\n", classes_jsa);
-memset(&header, 0, sizeof(struct FileMapHeader));
+ph->core->classes_jsa_fd = -1;
-if ((n = read(fd, &header, sizeof(struct FileMapHeader)))
+return false;
-!= sizeof(struct FileMapHeader)) {
+} else {
-print_debug("can't read shared archive file map header from %s\n", classes_jsa);
+print_debug("opened %s\n", classes_jsa);
-close(fd);
+}
-return false;
-}
+// read FileMapHeader from the file
+memset(&header, 0, sizeof(struct FileMapHeader));
-// check file magic
+if ((n = read(fd, &header, sizeof(struct FileMapHeader)))
-if (header._magic != 0xf00baba2) {
+!= sizeof(struct FileMapHeader)) {
-print_debug("%s has bad shared archive file magic number 0x%x, expecing 0xf00baba2\n",
+print_debug("can't read shared archive file map header from %s\n", classes_jsa);
-classes_jsa, header._magic);
+close(fd);
-close(fd);
+return false;
-return false;
+}
-}
+// check file magic
-// check version
+if (header._magic != 0xf00baba2) {
-if (header._version != CURRENT_ARCHIVE_VERSION) {
+print_debug("%s has bad shared archive file magic number 0x%x, expecing 0xf00baba2\n",
-print_debug("%s has wrong shared archive file version %d, expecting %d\n",
+classes_jsa, header._magic);
-classes_jsa, header._version, CURRENT_ARCHIVE_VERSION);
+close(fd);
-close(fd);
+return false;
-return false;
+}
-}
+// check version
-ph->core->classes_jsa_fd = fd;
+if (header._version != CURRENT_ARCHIVE_VERSION) {
-// add read-only maps from classes[_g].jsa to the list of maps
+print_debug("%s has wrong shared archive file version %d, expecting %d\n",
-for (m = 0; m < NUM_SHARED_MAPS; m++) {
+classes_jsa, header._version, CURRENT_ARCHIVE_VERSION);
-if (header._space[m]._read_only) {
+close(fd);
-base = (uintptr_t) header._space[m]._base;
+return false;
-// no need to worry about the fractional pages at-the-end.
+}
-// possible fractional pages are handled by core_read_data.
-add_class_share_map_info(ph, (off_t) header._space[m]._file_offset,
+ph->core->classes_jsa_fd = fd;
-base, (size_t) header._space[m]._used);
+// add read-only maps from classes[_g].jsa to the list of maps
-print_debug("added a share archive map at 0x%lx\n", base);
+for (m = 0; m < NUM_SHARED_MAPS; m++) {
-}
+if (header._space[m]._read_only) {
-}
+base = (uintptr_t) header._space[m]._base;
-return true;
+// no need to worry about the fractional pages at-the-end.
-}
+// possible fractional pages are handled by core_read_data.
-lib = lib->next;
+add_class_share_map_info(ph, (off_t) header._space[m]._file_offset,
-}
+base, (size_t) header._space[m]._used);
-return true;
+print_debug("added a share archive map at 0x%lx\n", base);
 }
+}
+return true;
+}
+lib = lib->next;
+}
+return true;
+}
 //---------------------------------------------------------------------------
 // functions to handle map_info
 // Order mappings based on virtual address.  We use this function as the
 // callback for sorting the array of map_info pointers.
 static int core_cmp_mapping(const void *lhsp, const void *rhsp)
 {
 const map_info *lhs = *((const map_info **)lhsp);
 const map_info *rhs = *((const map_info **)rhsp);
-if (lhs->vaddr == rhs->vaddr)
+if (lhs->vaddr == rhs->vaddr) {
 return (0);
+}
-return (lhs->vaddr < rhs->vaddr ? -1 : 1);
+return (lhs->vaddr < rhs->vaddr ? -1 : 1);
 }
 // we sort map_info by starting virtual address so that we can do
 // binary search to read from an address.
 static bool sort_map_array(struct ps_prochandle* ph) {
 size_t num_maps = ph->core->num_maps;
 map_info* map = ph->core->maps;
 int i = 0;
 // allocate map_array
 map_info** array;
 if ( (array = (map_info**) malloc(sizeof(map_info*) * num_maps)) == NULL) {
 print_debug("can't allocate memory for map array\n");
 return false;
 }
 // add maps to array
 while (map) {
 array[i] = map;
 i++;
 map = map->next;
 }
 // sort is called twice. If this is second time, clear map array
-if (ph->core->map_array) free(ph->core->map_array);
+if (ph->core->map_array) {
-ph->core->map_array = array;
+free(ph->core->map_array);
-// sort the map_info array by base virtual address.
+}
-qsort(ph->core->map_array, ph->core->num_maps, sizeof (map_info*),
+ph->core->map_array = array;
-core_cmp_mapping);
+// sort the map_info array by base virtual address.
+qsort(ph->core->map_array, ph->core->num_maps, sizeof (map_info*),
-// print map
+core_cmp_mapping);
-if (is_debug()) {
-int j = 0;
+// print map
-print_debug("---- sorted virtual address map ----\n");
+if (is_debug()) {
-for (j = 0; j < ph->core->num_maps; j++) {
+int j = 0;
-print_debug("base = 0x%lx\tsize = %d\n", ph->core->map_array[j]->vaddr,
+print_debug("---- sorted virtual address map ----\n");
-ph->core->map_array[j]->memsz);
+for (j = 0; j < ph->core->num_maps; j++) {
-}
+print_debug("base = 0x%lx\tsize = %d\n", ph->core->map_array[j]->vaddr,
-}
+ph->core->map_array[j]->memsz);
+}
-return true;
+}
+return true;
 }
 #ifndef MIN
 #define MIN(x, y) (((x) < (y))? (x): (y))
 #endif
 uintptr_t mapoff;
 ssize_t len, rem;
 off_t off;
 int fd;
-if (mp == NULL)
+if (mp == NULL) {
 break;  /* No mapping for this address */
+}
 fd = mp->fd;
 mapoff = addr - mp->vaddr;
 len = MIN(resid, mp->memsz - mapoff);
 off = mp->offset + mapoff;
-if ((len = pread(fd, buf, len, off)) <= 0)
+if ((len = pread(fd, buf, len, off)) <= 0) {
 break;
+}
 resid -= len;
 addr += len;
 buf = (char *)buf + len;
 return false;
 }
 static bool core_get_lwp_regs(struct ps_prochandle* ph, lwpid_t lwp_id,
 struct reg* regs) {
-// for core we have cached the lwp regs from NOTE section
+// for core we have cached the lwp regs after segment parsed
-thread_info* thr = ph->threads;
+sa_thread_info* thr = ph->threads;
 while (thr) {
 if (thr->lwp_id == lwp_id) {
 memcpy(regs, &thr->regs, sizeof(struct reg));
 return true;
 }
 thr = thr->next;
 }
 return false;
 }
-static bool core_get_lwp_info(struct ps_prochandle *ph, lwpid_t lwp_id, void *linfo) {
+static bool core_get_lwp_info(struct ps_prochandle *ph, lwpid_t id, void *info) {
 print_debug("core_get_lwp_info not implemented\n");
 return false;
 }
 static ps_prochandle_ops core_ops = {
 .p_pwrite= core_write_data,
 .get_lwp_regs= core_get_lwp_regs,
 .get_lwp_info= core_get_lwp_info
 };
-// read regs and create thread from NT_PRSTATUS entries from core file
+// from this point, mainly two blocks divided by def __APPLE__
+// one for Macosx, the other for regular Bsd
+#ifdef __APPLE__
+void print_thread(sa_thread_info *threadinfo) {
+print_debug("thread added: %d\n", threadinfo->lwp_id);
+print_debug("registers:\n");
+print_debug("  r_r15: 0x%" PRIx64 "\n", threadinfo->regs.r_r15);
+print_debug("  r_r14: 0x%" PRIx64 "\n", threadinfo->regs.r_r14);
+print_debug("  r_r13: 0x%" PRIx64 "\n", threadinfo->regs.r_r13);
+print_debug("  r_r12: 0x%" PRIx64 "\n", threadinfo->regs.r_r12);
+print_debug("  r_r11: 0x%" PRIx64 "\n", threadinfo->regs.r_r11);
+print_debug("  r_r10: 0x%" PRIx64 "\n", threadinfo->regs.r_r10);
+print_debug("  r_r9:  0x%" PRIx64 "\n", threadinfo->regs.r_r9);
+print_debug("  r_r8:  0x%" PRIx64 "\n", threadinfo->regs.r_r8);
+print_debug("  r_rdi: 0x%" PRIx64 "\n", threadinfo->regs.r_rdi);
+print_debug("  r_rsi: 0x%" PRIx64 "\n", threadinfo->regs.r_rsi);
+print_debug("  r_rbp: 0x%" PRIx64 "\n", threadinfo->regs.r_rbp);
+print_debug("  r_rbx: 0x%" PRIx64 "\n", threadinfo->regs.r_rbx);
+print_debug("  r_rdx: 0x%" PRIx64 "\n", threadinfo->regs.r_rdx);
+print_debug("  r_rcx: 0x%" PRIx64 "\n", threadinfo->regs.r_rcx);
+print_debug("  r_rax: 0x%" PRIx64 "\n", threadinfo->regs.r_rax);
+print_debug("  r_fs:  0x%" PRIx32 "\n", threadinfo->regs.r_fs);
+print_debug("  r_gs:  0x%" PRIx32 "\n", threadinfo->regs.r_gs);
+print_debug("  r_rip  0x%" PRIx64 "\n", threadinfo->regs.r_rip);
+print_debug("  r_cs:  0x%" PRIx64 "\n", threadinfo->regs.r_cs);
+print_debug("  r_rsp: 0x%" PRIx64 "\n", threadinfo->regs.r_rsp);
+print_debug("  r_rflags: 0x%" PRIx64 "\n", threadinfo->regs.r_rflags);
+}
+// read all segments64 commands from core file
+// read all thread commands from core file
+static bool read_core_segments(struct ps_prochandle* ph) {
+int i = 0;
+int num_threads = 0;
+int fd = ph->core->core_fd;
+off_t offset = 0;
+mach_header_64      fhead;
+load_command        lcmd;
+segment_command_64  segcmd;
+// thread_command      thrcmd;
+lseek(fd, offset, SEEK_SET);
+if(read(fd, (void *)&fhead, sizeof(mach_header_64)) != sizeof(mach_header_64)) {
+goto err;
+}
+print_debug("total commands: %d\n", fhead.ncmds);
+offset += sizeof(mach_header_64);
+for (i = 0; i < fhead.ncmds; i++) {
+lseek(fd, offset, SEEK_SET);
+if (read(fd, (void *)&lcmd, sizeof(load_command)) != sizeof(load_command)) {
+goto err;
+}
+offset += lcmd.cmdsize;    // next command position
+if (lcmd.cmd == LC_SEGMENT_64) {
+lseek(fd, -sizeof(load_command), SEEK_CUR);
+if (read(fd, (void *)&segcmd, sizeof(segment_command_64)) != sizeof(segment_command_64)) {
+print_debug("failed to read LC_SEGMENT_64 i = %d!\n", i);
+goto err;
+}
+if (add_map_info(ph, fd, segcmd.fileoff, segcmd.vmaddr, segcmd.vmsize) == NULL) {
+print_debug("Failed to add map_info at i = %d\n", i);
+goto err;
+}
+print_debug("segment added: %" PRIu64 " 0x%" PRIx64 " %d\n",
+segcmd.fileoff, segcmd.vmaddr, segcmd.vmsize);
+} else if (lcmd.cmd == LC_THREAD || lcmd.cmd == LC_UNIXTHREAD) {
+typedef struct thread_fc {
+uint32_t  flavor;
+uint32_t  count;
+} thread_fc;
+thread_fc fc;
+uint32_t size = sizeof(load_command);
+while (size < lcmd.cmdsize) {
+if (read(fd, (void *)&fc, sizeof(thread_fc)) != sizeof(thread_fc)) {
+printf("Reading flavor, count failed.\n");
+goto err;
+}
+size += sizeof(thread_fc);
+if (fc.flavor == x86_THREAD_STATE) {
+x86_thread_state_t thrstate;
+if (read(fd, (void *)&thrstate, sizeof(x86_thread_state_t)) != sizeof(x86_thread_state_t)) {
+printf("Reading flavor, count failed.\n");
+goto err;
+}
+size += sizeof(x86_thread_state_t);
+// create thread info list, update lwp_id later
+sa_thread_info* newthr = add_thread_info(ph, (pthread_t) -1, (lwpid_t) num_threads++);
+if (newthr == NULL) {
+printf("create thread_info failed\n");
+goto err;
+}
+// note __DARWIN_UNIX03 depengs on other definitions
+#if __DARWIN_UNIX03
+#define get_register_v(regst, regname) \
+regst.uts.ts64.__##regname
+#else
+#define get_register_v(regst, regname) \
+regst.uts.ts64.##regname
+#endif // __DARWIN_UNIX03
+newthr->regs.r_rax = get_register_v(thrstate, rax);
+newthr->regs.r_rbx = get_register_v(thrstate, rbx);
+newthr->regs.r_rcx = get_register_v(thrstate, rcx);
+newthr->regs.r_rdx = get_register_v(thrstate, rdx);
+newthr->regs.r_rdi = get_register_v(thrstate, rdi);
+newthr->regs.r_rsi = get_register_v(thrstate, rsi);
+newthr->regs.r_rbp = get_register_v(thrstate, rbp);
+newthr->regs.r_rsp = get_register_v(thrstate, rsp);
+newthr->regs.r_r8  = get_register_v(thrstate, r8);
+newthr->regs.r_r9  = get_register_v(thrstate, r9);
+newthr->regs.r_r10 = get_register_v(thrstate, r10);
+newthr->regs.r_r11 = get_register_v(thrstate, r11);
+newthr->regs.r_r12 = get_register_v(thrstate, r12);
+newthr->regs.r_r13 = get_register_v(thrstate, r13);
+newthr->regs.r_r14 = get_register_v(thrstate, r14);
+newthr->regs.r_r15 = get_register_v(thrstate, r15);
+newthr->regs.r_rip = get_register_v(thrstate, rip);
+newthr->regs.r_rflags = get_register_v(thrstate, rflags);
+newthr->regs.r_cs  = get_register_v(thrstate, cs);
+newthr->regs.r_fs  = get_register_v(thrstate, fs);
+newthr->regs.r_gs  = get_register_v(thrstate, gs);
+print_thread(newthr);
+} else if (fc.flavor == x86_FLOAT_STATE) {
+x86_float_state_t flstate;
+if (read(fd, (void *)&flstate, sizeof(x86_float_state_t)) != sizeof(x86_float_state_t)) {
+print_debug("Reading flavor, count failed.\n");
+goto err;
+}
+size += sizeof(x86_float_state_t);
+} else if (fc.flavor == x86_EXCEPTION_STATE) {
+x86_exception_state_t excpstate;
+if (read(fd, (void *)&excpstate, sizeof(x86_exception_state_t)) != sizeof(x86_exception_state_t)) {
+printf("Reading flavor, count failed.\n");
+goto err;
+}
+size += sizeof(x86_exception_state_t);
+}
+}
+}
+}
+return true;
+err:
+return false;
+}
+/**local function **/
+bool exists(const char *fname)
+{
+int fd;
+if ((fd = open(fname, O_RDONLY)) > 0) {
+close(fd);
+return true;
+}
+return false;
+}
+// we check: 1. lib
+//           2. lib/server
+//           3. jre/lib
+//           4. jre/lib/server
+// from: 1. exe path
+//       2. JAVA_HOME
+//       3. DYLD_LIBRARY_PATH
+static bool get_real_path(struct ps_prochandle* ph, char *rpath) {
+/** check if they exist in JAVA ***/
+char* execname = ph->core->exec_path;
+char  filepath[4096];
+char* filename = strrchr(rpath, '/');               // like /libjvm.dylib
+if (filename == NULL) {
+return false;
+}
+char* posbin = strstr(execname, "/bin/java");
+if (posbin != NULL) {
+memcpy(filepath, execname, posbin - execname);    // not include trailing '/'
+filepath[posbin - execname] = '\0';
+} else {
+char* java_home = getenv("JAVA_HOME");
+if (java_home != NULL) {
+strcpy(filepath, java_home);
+} else {
+char* dyldpath = getenv("DYLD_LIBRARY_PATH");
+char* dypath = strtok(dyldpath, ":");
+while (dypath != NULL) {
+strcpy(filepath, dypath);
+strcat(filepath, filename);
+if (exists(filepath)) {
+strcpy(rpath, filepath);
+return true;
+}
+dypath = strtok(dyldpath, ":");
+}
+// not found
+return false;
+}
+}
+// for exec and java_home, jdkpath now is filepath
+size_t filepath_base_size = strlen(filepath);
+// first try /lib/ and /lib/server
+strcat(filepath, "/lib");
+strcat(filepath, filename);
+if (exists(filepath)) {
+strcpy(rpath, filepath);
+return true;
+}
+char* pos = strstr(filepath, filename);    // like /libjvm.dylib
+*pos = '\0';
+strcat(filepath, "/server");
+strcat(filepath, filename);
+if (exists(filepath)) {
+strcpy(rpath, filepath);
+return true;
+}
+// then try /jre/lib/ and /jre/lib/server
+filepath[filepath_base_size] = '\0';
+strcat(filepath, "/jre/lib");
+strcat(filepath, filename);
+if (exists(filepath)) {
+strcpy(rpath, filepath);
+return true;
+}
+pos = strstr(filepath, filename);
+*pos = '\0';
+strcat(filepath, "/server");
+strcat(filepath, filename);
+if (exists(filepath)) {
+strcpy(rpath, filepath);
+return true;
+}
+return false;
+}
+static bool read_shared_lib_info(struct ps_prochandle* ph) {
+static int pagesize = 0;
+int fd = ph->core->core_fd;
+int i = 0, j;
+uint32_t  v;
+mach_header_64 header;        // used to check if a file header in segment
+load_command lcmd;
+dylib_command dylibcmd;
+char name[BUF_SIZE];  // use to store name
+if (pagesize == 0) {
+pagesize = getpagesize();
+print_debug("page size is %d\n", pagesize);
+}
+for (j = 0; j < ph->core->num_maps; j++) {
+map_info *iter = ph->core->map_array[j];   // head
+off_t fpos = iter->offset;
+if (iter->fd != fd) {
+// only search core file!
+continue;
+}
+print_debug("map_info %d: vmaddr = 0x%016" PRIx64 "  fileoff = %" PRIu64 "  vmsize = %" PRIu64 "\n",
+j, iter->vaddr, iter->offset, iter->memsz);
+lseek(fd, fpos, SEEK_SET);
+// we assume .dylib loaded at segment address --- which is true for JVM libraries
+// multiple files may be loaded in one segment.
+// if first word is not a magic word, means this segment does not contain lib file.
+if (read(fd, (void *)&v, sizeof(uint32_t)) == sizeof(uint32_t)) {
+if (v != MH_MAGIC_64) {
+continue;
+}
+} else {
+// may be encountered last map, which is not readable
+continue;
+}
+while (ltell(fd) - iter->offset < iter->memsz) {
+lseek(fd, fpos, SEEK_SET);
+if (read(fd, (void *)&v, sizeof(uint32_t)) != sizeof(uint32_t)) {
+break;
+}
+if (v != MH_MAGIC_64) {
+fpos = (ltell(fd) + pagesize -1)/pagesize * pagesize;
+continue;
+}
+lseek(fd, -sizeof(uint32_t), SEEK_CUR);
+// this is the file begining to core file.
+if (read(fd, (void *)&header, sizeof(mach_header_64)) != sizeof(mach_header_64)) {
+goto err;
+}
+fpos = ltell(fd);
+// found a mach-o file in this segment
+for (i = 0; i < header.ncmds; i++) {
+// read commands in this "file"
+// LC_ID_DYLIB is the file itself for a .dylib
+lseek(fd, fpos, SEEK_SET);
+if (read(fd, (void *)&lcmd, sizeof(load_command)) != sizeof(load_command)) {
+return false;   // error
+}
+fpos += lcmd.cmdsize;  // next command position
+// make sure still within seg size.
+if (fpos  - lcmd.cmdsize - iter->offset > iter->memsz) {
+print_debug("Warning: out of segement limit: %ld \n", fpos  - lcmd.cmdsize - iter->offset);
+break;  // no need to iterate all commands
+}
+if (lcmd.cmd == LC_ID_DYLIB) {
+lseek(fd, -sizeof(load_command), SEEK_CUR);
+if (read(fd, (void *)&dylibcmd, sizeof(dylib_command)) != sizeof(dylib_command)) {
+return false;
+}
+/**** name stored at dylib_command.dylib.name.offset, is a C string  */
+lseek(fd, dylibcmd.dylib.name.offset - sizeof(dylib_command), SEEK_CUR);
+int j = 0;
+while (j < BUF_SIZE) {
+read(fd, (void *)(name + j), sizeof(char));
+if (name[j] == '\0') break;
+j++;
+}
+print_debug("%s\n", name);
+// changed name from @rpath/xxxx.dylib to real path
+if (strrchr(name, '@')) {
+get_real_path(ph, name);
+print_debug("get_real_path returned: %s\n", name);
+}
+add_lib_info(ph, name, iter->vaddr);
+break;
+}
+}
+// done with the file, advanced to next page to search more files
+fpos = (ltell(fd) + pagesize - 1) / pagesize * pagesize;
+}
+}
+return true;
+err:
+return false;
+}
+bool read_macho64_header(int fd, mach_header_64* core_header) {
+bool is_macho = false;
+if (fd < 0) return false;
+off_t pos = ltell(fd);
+lseek(fd, 0, SEEK_SET);
+if (read(fd, (void *)core_header, sizeof(mach_header_64)) != sizeof(mach_header_64)) {
+is_macho = false;
+} else {
+is_macho = (core_header->magic ==  MH_MAGIC_64 || core_header->magic ==  MH_CIGAM_64);
+}
+lseek(fd, pos, SEEK_SET);
+return is_macho;
+}
+// the one and only one exposed stuff from this file
+struct ps_prochandle* Pgrab_core(const char* exec_file, const char* core_file) {
+mach_header_64 core_header;
+mach_header_64 exec_header;
+struct ps_prochandle* ph = (struct ps_prochandle*) calloc(1, sizeof(struct ps_prochandle));
+if (ph == NULL) {
+print_debug("cant allocate ps_prochandle\n");
+return NULL;
+}
+if ((ph->core = (struct core_data*) calloc(1, sizeof(struct core_data))) == NULL) {
+free(ph);
+print_debug("can't allocate ps_prochandle\n");
+return NULL;
+}
+// initialize ph
+ph->ops = &core_ops;
+ph->core->core_fd   = -1;
+ph->core->exec_fd   = -1;
+ph->core->interp_fd = -1;
+print_debug("exec: %s   core: %s", exec_file, core_file);
+strncpy(ph->core->exec_path, exec_file, sizeof(ph->core->exec_path));
+// open the core file
+if ((ph->core->core_fd = open(core_file, O_RDONLY)) < 0) {
+print_error("can't open core file\n");
+goto err;
+}
+// read core file header
+if (read_macho64_header(ph->core->core_fd, &core_header) != true || core_header.filetype != MH_CORE) {
+print_debug("core file is not a valid Mach-O file\n");
+goto err;
+}
+if ((ph->core->exec_fd = open(exec_file, O_RDONLY)) < 0) {
+print_error("can't open executable file\n");
+goto err;
+}
+if (read_macho64_header(ph->core->exec_fd, &exec_header) != true ||
+exec_header.filetype != MH_EXECUTE) {
+print_error("executable file is not a valid Mach-O file\n");
+goto err;
+}
+// process core file segments
+if (read_core_segments(ph) != true) {
+print_error("failed to read core segments\n");
+goto err;
+}
+// allocate and sort maps into map_array, we need to do this
+// here because read_shared_lib_info needs to read from debuggee
+// address space
+if (sort_map_array(ph) != true) {
+print_error("failed to sort segment map array\n");
+goto err;
+}
+if (read_shared_lib_info(ph) != true) {
+print_error("failed to read libraries\n");
+goto err;
+}
+// sort again because we have added more mappings from shared objects
+if (sort_map_array(ph) != true) {
+print_error("failed to sort segment map array\n");
+goto err;
+}
+if (init_classsharing_workaround(ph) != true) {
+print_error("failed to workaround classshareing\n");
+goto err;
+}
+print_debug("Leave Pgrab_core\n");
+return ph;
+err:
+Prelease(ph);
+return NULL;
+}
+#else // __APPLE__ (none macosx)
+// read regs and create thread from core file
 static bool core_handle_prstatus(struct ps_prochandle* ph, const char* buf, size_t nbytes) {
 // we have to read prstatus_t from buf
 // assert(nbytes == sizeof(prstaus_t), "size mismatch on prstatus_t");
 prstatus_t* prstat = (prstatus_t*) buf;
-thread_info* newthr;
+sa_thread_info* newthr;
 print_debug("got integer regset for lwp %d\n", prstat->pr_pid);
 // we set pthread_t to -1 for core dump
 if((newthr = add_thread_info(ph, (pthread_t) -1,  prstat->pr_pid)) == NULL)
 return false;
 char* descdata  = p + sizeof(ELF_NHDR) + ROUNDUP(notep->n_namesz, 4);
 print_debug("Note header with n_type = %d and n_descsz = %u\n",
 notep->n_type, notep->n_descsz);
 if (notep->n_type == NT_PRSTATUS) {
-if (core_handle_prstatus(ph, descdata, notep->n_descsz) != true)
+if (core_handle_prstatus(ph, descdata, notep->n_descsz) != true) {
 return false;
+}
 }
 p = descdata + ROUNDUP(notep->n_descsz, 4);
 }
 free(buf);
 */
 for (core_php = phbuf, i = 0; i < core_ehdr->e_phnum; i++) {
 switch (core_php->p_type) {
 case PT_NOTE:
-if (core_handle_note(ph, core_php) != true) goto err;
+if (core_handle_note(ph, core_php) != true) {
+goto err;
+}
 break;
 case PT_LOAD: {
 if (core_php->p_filesz != 0) {
 if (add_map_info(ph, ph->core->core_fd, core_php->p_offset,
 err:
 free(phbuf);
 return false;
 }
 #define FIRST_LINK_MAP_OFFSET offsetof(struct r_debug,  r_map)
 #define LD_BASE_OFFSET        offsetof(struct r_debug,  r_ldbase)
 #define LINK_MAP_ADDR_OFFSET  offsetof(struct link_map, l_addr)
 #define LINK_MAP_NAME_OFFSET  offsetof(struct link_map, l_name)
 #define LINK_MAP_NEXT_OFFSET  offsetof(struct link_map, l_next)
 // read shared library info from runtime linker's data structures.
 // This work is done by librtlb_db in Solaris
 static bool read_shared_lib_info(struct ps_prochandle* ph) {
 uintptr_t addr = ph->core->dynamic_addr;
 uintptr_t debug_base;
 uintptr_t first_link_map_addr;
 uintptr_t ld_base_addr;
 uintptr_t link_map_addr;
 uintptr_t lib_base_diff;
 uintptr_t lib_base;
 uintptr_t lib_name_addr;
 char lib_name[BUF_SIZE];
 ELF_DYN dyn;
 ELF_EHDR elf_ehdr;
 int lib_fd;
 // _DYNAMIC has information of the form
 //         [tag] [data] [tag] [data] .....
 // Both tag and data are pointer sized.
 // We look for dynamic info with DT_DEBUG. This has shared object info.
 // refer to struct r_debug in link.h
 dyn.d_tag = DT_NULL;
 while (dyn.d_tag != DT_DEBUG) {
 if (ps_pread(ph, (psaddr_t) addr, &dyn, sizeof(ELF_DYN)) != PS_OK) {
 print_debug("can't read debug info from _DYNAMIC\n");
-return false;
-}
-addr += sizeof(ELF_DYN);
-}
-// we have got Dyn entry with DT_DEBUG
-debug_base = dyn.d_un.d_ptr;
-// at debug_base we have struct r_debug. This has first link map in r_map field
-if (ps_pread(ph, (psaddr_t) debug_base + FIRST_LINK_MAP_OFFSET,
-&first_link_map_addr, sizeof(uintptr_t)) != PS_OK) {
-print_debug("can't read first link map address\n");
 return false;
 }
+addr += sizeof(ELF_DYN);
-// read ld_base address from struct r_debug
+}
-// XXX: There is no r_ldbase member on BSD
-/*
+// we have got Dyn entry with DT_DEBUG
-if (ps_pread(ph, (psaddr_t) debug_base + LD_BASE_OFFSET, &ld_base_addr,
+debug_base = dyn.d_un.d_ptr;
-sizeof(uintptr_t)) != PS_OK) {
+// at debug_base we have struct r_debug. This has first link map in r_map field
-print_debug("can't read ld base address\n");
+if (ps_pread(ph, (psaddr_t) debug_base + FIRST_LINK_MAP_OFFSET,
+&first_link_map_addr, sizeof(uintptr_t)) != PS_OK) {
+print_debug("can't read first link map address\n");
+return false;
+}
+// read ld_base address from struct r_debug
+// XXX: There is no r_ldbase member on BSD
+/*
+if (ps_pread(ph, (psaddr_t) debug_base + LD_BASE_OFFSET, &ld_base_addr,
+sizeof(uintptr_t)) != PS_OK) {
+print_debug("can't read ld base address\n");
+return false;
+}
+ph->core->ld_base_addr = ld_base_addr;
+*/
+ph->core->ld_base_addr = 0;
+print_debug("interpreter base address is 0x%lx\n", ld_base_addr);
+// now read segments from interp (i.e ld-elf.so.1)
+if (read_interp_segments(ph) != true)
+return false;
+// after adding interpreter (ld.so) mappings sort again
+if (sort_map_array(ph) != true)
+return false;
+print_debug("first link map is at 0x%lx\n", first_link_map_addr);
+link_map_addr = first_link_map_addr;
+while (link_map_addr != 0) {
+// read library base address of the .so. Note that even though <sys/link.h> calls
+// link_map->l_addr as "base address",  this is * not * really base virtual
+// address of the shared object. This is actually the difference b/w the virtual
+// address mentioned in shared object and the actual virtual base where runtime
+// linker loaded it. We use "base diff" in read_lib_segments call below.
+if (ps_pread(ph, (psaddr_t) link_map_addr + LINK_MAP_ADDR_OFFSET,
+&lib_base_diff, sizeof(uintptr_t)) != PS_OK) {
+print_debug("can't read shared object base address diff\n");
 return false;
 }
-ph->core->ld_base_addr = ld_base_addr;
-*/
+// read address of the name
-ph->core->ld_base_addr = 0;
+if (ps_pread(ph, (psaddr_t) link_map_addr + LINK_MAP_NAME_OFFSET,
+&lib_name_addr, sizeof(uintptr_t)) != PS_OK) {
-print_debug("interpreter base address is 0x%lx\n", ld_base_addr);
+print_debug("can't read address of shared object name\n");
-// now read segments from interp (i.e ld-elf.so.1)
-if (read_interp_segments(ph) != true)
 return false;
+}
-// after adding interpreter (ld.so) mappings sort again
-if (sort_map_array(ph) != true)
+// read name of the shared object
+if (read_string(ph, (uintptr_t) lib_name_addr, lib_name, sizeof(lib_name)) != true) {
+print_debug("can't read shared object name\n");
 return false;
+}
-print_debug("first link map is at 0x%lx\n", first_link_map_addr);
+if (lib_name[0] != '\0') {
-link_map_addr = first_link_map_addr;
+// ignore empty lib names
-while (link_map_addr != 0) {
+lib_fd = pathmap_open(lib_name);
-// read library base address of the .so. Note that even though <sys/link.h> calls
-// link_map->l_addr as "base address",  this is * not * really base virtual
+if (lib_fd < 0) {
-// address of the shared object. This is actually the difference b/w the virtual
+print_debug("can't open shared object %s\n", lib_name);
-// address mentioned in shared object and the actual virtual base where runtime
+// continue with other libraries...
-// linker loaded it. We use "base diff" in read_lib_segments call below.
+} else {
+if (read_elf_header(lib_fd, &elf_ehdr)) {
-if (ps_pread(ph, (psaddr_t) link_map_addr + LINK_MAP_ADDR_OFFSET,
+lib_base = lib_base_diff + find_base_address(lib_fd, &elf_ehdr);
-&lib_base_diff, sizeof(uintptr_t)) != PS_OK) {
+print_debug("reading library %s @ 0x%lx [ 0x%lx ]\n",
-print_debug("can't read shared object base address diff\n");
+lib_name, lib_base, lib_base_diff);
-return false;
+// while adding library mappings we need to use "base difference".
-}
+if (! read_lib_segments(ph, lib_fd, &elf_ehdr, lib_base_diff)) {
+print_debug("can't read shared object's segments\n");
-// read address of the name
+close(lib_fd);
-if (ps_pread(ph, (psaddr_t) link_map_addr + LINK_MAP_NAME_OFFSET,
+return false;
-&lib_name_addr, sizeof(uintptr_t)) != PS_OK) {
+}
-print_debug("can't read address of shared object name\n");
+add_lib_info_fd(ph, lib_name, lib_fd, lib_base);
-return false;
+// Map info is added for the library (lib_name) so
-}
+// we need to re-sort it before calling the p_pdread.
+if (sort_map_array(ph) != true)
-// read name of the shared object
+return false;
-if (read_string(ph, (uintptr_t) lib_name_addr, lib_name, sizeof(lib_name)) != true) {
+} else {
-print_debug("can't read shared object name\n");
+print_debug("can't read ELF header for shared object %s\n", lib_name);
-return false;
+close(lib_fd);
-}
+// continue with other libraries...
+}
-if (lib_name[0] != '\0') {
+}
-// ignore empty lib names
+}
-lib_fd = pathmap_open(lib_name);
+// read next link_map address
-if (lib_fd < 0) {
+if (ps_pread(ph, (psaddr_t) link_map_addr + LINK_MAP_NEXT_OFFSET,
-print_debug("can't open shared object %s\n", lib_name);
+&link_map_addr, sizeof(uintptr_t)) != PS_OK) {
-// continue with other libraries...
+print_debug("can't read next link in link_map\n");
-} else {
+return false;
-if (read_elf_header(lib_fd, &elf_ehdr)) {
+}
-lib_base = lib_base_diff + find_base_address(lib_fd, &elf_ehdr);
+}
-print_debug("reading library %s @ 0x%lx [ 0x%lx ]\n",
-lib_name, lib_base, lib_base_diff);
+return true;
-// while adding library mappings we need to use "base difference".
-if (! read_lib_segments(ph, lib_fd, &elf_ehdr, lib_base_diff)) {
-print_debug("can't read shared object's segments\n");
-close(lib_fd);
-return false;
-}
-add_lib_info_fd(ph, lib_name, lib_fd, lib_base);
-// Map info is added for the library (lib_name) so
-// we need to re-sort it before calling the p_pdread.
-if (sort_map_array(ph) != true)
-return false;
-} else {
-print_debug("can't read ELF header for shared object %s\n", lib_name);
-close(lib_fd);
-// continue with other libraries...
-}
-}
-}
-// read next link_map address
-if (ps_pread(ph, (psaddr_t) link_map_addr + LINK_MAP_NEXT_OFFSET,
-&link_map_addr, sizeof(uintptr_t)) != PS_OK) {
-print_debug("can't read next link in link_map\n");
-return false;
-}
-}
-return true;
 }
 // the one and only one exposed stuff from this file
 struct ps_prochandle* Pgrab_core(const char* exec_file, const char* core_file) {
 ELF_EHDR core_ehdr;
 ELF_EHDR exec_ehdr;
 struct ps_prochandle* ph = (struct ps_prochandle*) calloc(1, sizeof(struct ps_prochandle));
 if (ph == NULL) {
-print_debug("can't allocate ps_prochandle\n");
+print_debug("cant allocate ps_prochandle\n");
 return NULL;
 }
 if ((ph->core = (struct core_data*) calloc(1, sizeof(struct core_data))) == NULL) {
 free(ph);
 print_debug("can't allocate ps_prochandle\n");
 return NULL;
 }
 // initialize ph
 ph->ops = &core_ops;
 ph->core->core_fd   = -1;
 ph->core->exec_fd   = -1;
 ph->core->interp_fd = -1;
-// open the core file
+print_debug("exec: %s   core: %s", exec_file, core_file);
-if ((ph->core->core_fd = open(core_file, O_RDONLY)) < 0) {
-print_debug("can't open core file\n");
+// open the core file
-goto err;
+if ((ph->core->core_fd = open(core_file, O_RDONLY)) < 0) {
-}
+print_debug("can't open core file\n");
+goto err;
-// read core file ELF header
+}
-if (read_elf_header(ph->core->core_fd, &core_ehdr) != true || core_ehdr.e_type != ET_CORE) {
-print_debug("core file is not a valid ELF ET_CORE file\n");
+// read core file ELF header
-goto err;
+if (read_elf_header(ph->core->core_fd, &core_ehdr) != true || core_ehdr.e_type != ET_CORE) {
-}
+print_debug("core file is not a valid ELF ET_CORE file\n");
+goto err;
-if ((ph->core->exec_fd = open(exec_file, O_RDONLY)) < 0) {
+}
-print_debug("can't open executable file\n");
-goto err;
+if ((ph->core->exec_fd = open(exec_file, O_RDONLY)) < 0) {
-}
+print_debug("can't open executable file\n");
+goto err;
-if (read_elf_header(ph->core->exec_fd, &exec_ehdr) != true || exec_ehdr.e_type != ET_EXEC) {
+}
-print_debug("executable file is not a valid ELF ET_EXEC file\n");
-goto err;
+if (read_elf_header(ph->core->exec_fd, &exec_ehdr) != true || exec_ehdr.e_type != ET_EXEC) {
-}
+print_debug("executable file is not a valid ELF ET_EXEC file\n");
+goto err;
-// process core file segments
+}
-if (read_core_segments(ph, &core_ehdr) != true)
-goto err;
+// process core file segments
+if (read_core_segments(ph, &core_ehdr) != true)
-// process exec file segments
+goto err;
-if (read_exec_segments(ph, &exec_ehdr) != true)
-goto err;
+// process exec file segments
+if (read_exec_segments(ph, &exec_ehdr) != true)
-// exec file is also treated like a shared object for symbol search
+goto err;
-if (add_lib_info_fd(ph, exec_file, ph->core->exec_fd,
-(uintptr_t)0 + find_base_address(ph->core->exec_fd, &exec_ehdr)) == NULL)
+// exec file is also treated like a shared object for symbol search
-goto err;
+if (add_lib_info_fd(ph, exec_file, ph->core->exec_fd,
+(uintptr_t)0 + find_base_address(ph->core->exec_fd, &exec_ehdr)) == NULL)
-// allocate and sort maps into map_array, we need to do this
+goto err;
-// here because read_shared_lib_info needs to read from debuggee
-// address space
+// allocate and sort maps into map_array, we need to do this
-if (sort_map_array(ph) != true)
+// here because read_shared_lib_info needs to read from debuggee
-goto err;
+// address space
+if (sort_map_array(ph) != true)
-if (read_shared_lib_info(ph) != true)
+goto err;
-goto err;
+if (read_shared_lib_info(ph) != true)
-// sort again because we have added more mappings from shared objects
+goto err;
-if (sort_map_array(ph) != true)
-goto err;
+// sort again because we have added more mappings from shared objects
+if (sort_map_array(ph) != true)
-if (init_classsharing_workaround(ph) != true)
+goto err;
-goto err;
+if (init_classsharing_workaround(ph) != true)
-return ph;
+goto err;
+print_debug("Leave Pgrab_core\n");
+return ph;
 err:
 Prelease(ph);
 return NULL;
 }
+#endif // __APPLE__

changeset 16351	032b310a3e2f
parent 13728	882756847a04
child 17310	b4118c427cc0