You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

299 lines
8.9 KiB

http://sourceware.org/ml/gdb-cvs/2013-06/msg00014.html
### src/gdb/gdbserver/ChangeLog 2013/05/31 19:14:33 1.720
### src/gdb/gdbserver/ChangeLog 2013/06/04 12:59:20 1.721
## -1,3 +1,12 @@
+2013-06-04 Gary Benson <gbenson@redhat.com>
+
+ * server.c (handle_query): Add "augmented-libraries-svr4-read+"
+ to qSupported response when appropriate.
+ (handle_qxfer_libraries_svr4): Allow qXfer:libraries-svr4:read
+ with nonzero-length annex.
+ * linux-low.c (linux_qxfer_libraries_svr4): Parse and handle
+ arguments supplied in annex.
+
2013-05-31 Doug Evans <dje@google.com>
* linux-x86-low.c (ps_get_thread_area): Properly extend address to
--- src/gdb/gdbserver/linux-low.c 2013/05/23 17:17:50 1.237
+++ src/gdb/gdbserver/linux-low.c 2013/06/04 12:59:21 1.238
@@ -5728,6 +5728,12 @@
};
const struct link_map_offsets *lmo;
unsigned int machine;
+ int ptr_size;
+ CORE_ADDR lm_addr = 0, lm_prev = 0;
+ int allocated = 1024;
+ char *p;
+ CORE_ADDR l_name, l_addr, l_ld, l_next, l_prev;
+ int header_done = 0;
if (writebuf != NULL)
return -2;
@@ -5738,128 +5744,144 @@
xsnprintf (filename, sizeof filename, "/proc/%d/exe", pid);
is_elf64 = elf_64_file_p (filename, &machine);
lmo = is_elf64 ? &lmo_64bit_offsets : &lmo_32bit_offsets;
+ ptr_size = is_elf64 ? 8 : 4;
- if (priv->r_debug == 0)
- priv->r_debug = get_r_debug (pid, is_elf64);
-
- /* We failed to find DT_DEBUG. Such situation will not change for this
- inferior - do not retry it. Report it to GDB as E01, see for the reasons
- at the GDB solib-svr4.c side. */
- if (priv->r_debug == (CORE_ADDR) -1)
- return -1;
-
- if (priv->r_debug == 0)
+ while (annex[0] != '\0')
{
- document = xstrdup ("<library-list-svr4 version=\"1.0\"/>\n");
+ const char *sep;
+ CORE_ADDR *addrp;
+ int len;
+
+ sep = strchr (annex, '=');
+ if (sep == NULL)
+ break;
+
+ len = sep - annex;
+ if (len == 5 && strncmp (annex, "start", 5) == 0)
+ addrp = &lm_addr;
+ else if (len == 4 && strncmp (annex, "prev", 4) == 0)
+ addrp = &lm_prev;
+ else
+ {
+ annex = strchr (sep, ';');
+ if (annex == NULL)
+ break;
+ annex++;
+ continue;
+ }
+
+ annex = decode_address_to_semicolon (addrp, sep + 1);
}
- else
+
+ if (lm_addr == 0)
{
- int allocated = 1024;
- char *p;
- const int ptr_size = is_elf64 ? 8 : 4;
- CORE_ADDR lm_addr, lm_prev, l_name, l_addr, l_ld, l_next, l_prev;
- int r_version, header_done = 0;
-
- document = xmalloc (allocated);
- strcpy (document, "<library-list-svr4 version=\"1.0\"");
- p = document + strlen (document);
-
- r_version = 0;
- if (linux_read_memory (priv->r_debug + lmo->r_version_offset,
- (unsigned char *) &r_version,
- sizeof (r_version)) != 0
- || r_version != 1)
+ int r_version = 0;
+
+ if (priv->r_debug == 0)
+ priv->r_debug = get_r_debug (pid, is_elf64);
+
+ /* We failed to find DT_DEBUG. Such situation will not change
+ for this inferior - do not retry it. Report it to GDB as
+ E01, see for the reasons at the GDB solib-svr4.c side. */
+ if (priv->r_debug == (CORE_ADDR) -1)
+ return -1;
+
+ if (priv->r_debug != 0)
{
- warning ("unexpected r_debug version %d", r_version);
- goto done;
+ if (linux_read_memory (priv->r_debug + lmo->r_version_offset,
+ (unsigned char *) &r_version,
+ sizeof (r_version)) != 0
+ || r_version != 1)
+ {
+ warning ("unexpected r_debug version %d", r_version);
+ }
+ else if (read_one_ptr (priv->r_debug + lmo->r_map_offset,
+ &lm_addr, ptr_size) != 0)
+ {
+ warning ("unable to read r_map from 0x%lx",
+ (long) priv->r_debug + lmo->r_map_offset);
+ }
}
+ }
+
+ document = xmalloc (allocated);
+ strcpy (document, "<library-list-svr4 version=\"1.0\"");
+ p = document + strlen (document);
+
+ while (lm_addr
+ && read_one_ptr (lm_addr + lmo->l_name_offset,
+ &l_name, ptr_size) == 0
+ && read_one_ptr (lm_addr + lmo->l_addr_offset,
+ &l_addr, ptr_size) == 0
+ && read_one_ptr (lm_addr + lmo->l_ld_offset,
+ &l_ld, ptr_size) == 0
+ && read_one_ptr (lm_addr + lmo->l_prev_offset,
+ &l_prev, ptr_size) == 0
+ && read_one_ptr (lm_addr + lmo->l_next_offset,
+ &l_next, ptr_size) == 0)
+ {
+ unsigned char libname[PATH_MAX];
- if (read_one_ptr (priv->r_debug + lmo->r_map_offset,
- &lm_addr, ptr_size) != 0)
+ if (lm_prev != l_prev)
{
- warning ("unable to read r_map from 0x%lx",
- (long) priv->r_debug + lmo->r_map_offset);
- goto done;
+ warning ("Corrupted shared library list: 0x%lx != 0x%lx",
+ (long) lm_prev, (long) l_prev);
+ break;
}
- lm_prev = 0;
- while (read_one_ptr (lm_addr + lmo->l_name_offset,
- &l_name, ptr_size) == 0
- && read_one_ptr (lm_addr + lmo->l_addr_offset,
- &l_addr, ptr_size) == 0
- && read_one_ptr (lm_addr + lmo->l_ld_offset,
- &l_ld, ptr_size) == 0
- && read_one_ptr (lm_addr + lmo->l_prev_offset,
- &l_prev, ptr_size) == 0
- && read_one_ptr (lm_addr + lmo->l_next_offset,
- &l_next, ptr_size) == 0)
+ /* Not checking for error because reading may stop before
+ we've got PATH_MAX worth of characters. */
+ libname[0] = '\0';
+ linux_read_memory (l_name, libname, sizeof (libname) - 1);
+ libname[sizeof (libname) - 1] = '\0';
+ if (libname[0] != '\0')
{
- unsigned char libname[PATH_MAX];
+ /* 6x the size for xml_escape_text below. */
+ size_t len = 6 * strlen ((char *) libname);
+ char *name;
- if (lm_prev != l_prev)
+ if (!header_done)
{
- warning ("Corrupted shared library list: 0x%lx != 0x%lx",
- (long) lm_prev, (long) l_prev);
- break;
+ /* Terminate `<library-list-svr4'. */
+ *p++ = '>';
+ header_done = 1;
}
- /* Not checking for error because reading may stop before
- we've got PATH_MAX worth of characters. */
- libname[0] = '\0';
- linux_read_memory (l_name, libname, sizeof (libname) - 1);
- libname[sizeof (libname) - 1] = '\0';
- if (libname[0] != '\0')
+ while (allocated < p - document + len + 200)
{
- /* 6x the size for xml_escape_text below. */
- size_t len = 6 * strlen ((char *) libname);
- char *name;
-
- if (!header_done)
- {
- /* Terminate `<library-list-svr4'. */
- *p++ = '>';
- header_done = 1;
- }
-
- while (allocated < p - document + len + 200)
- {
- /* Expand to guarantee sufficient storage. */
- uintptr_t document_len = p - document;
-
- document = xrealloc (document, 2 * allocated);
- allocated *= 2;
- p = document + document_len;
- }
-
- name = xml_escape_text ((char *) libname);
- p += sprintf (p, "<library name=\"%s\" lm=\"0x%lx\" "
- "l_addr=\"0x%lx\" l_ld=\"0x%lx\"/>",
- name, (unsigned long) lm_addr,
- (unsigned long) l_addr, (unsigned long) l_ld);
- free (name);
- }
- else if (lm_prev == 0)
- {
- sprintf (p, " main-lm=\"0x%lx\"", (unsigned long) lm_addr);
- p = p + strlen (p);
- }
+ /* Expand to guarantee sufficient storage. */
+ uintptr_t document_len = p - document;
- if (l_next == 0)
- break;
+ document = xrealloc (document, 2 * allocated);
+ allocated *= 2;
+ p = document + document_len;
+ }
- lm_prev = lm_addr;
- lm_addr = l_next;
+ name = xml_escape_text ((char *) libname);
+ p += sprintf (p, "<library name=\"%s\" lm=\"0x%lx\" "
+ "l_addr=\"0x%lx\" l_ld=\"0x%lx\"/>",
+ name, (unsigned long) lm_addr,
+ (unsigned long) l_addr, (unsigned long) l_ld);
+ free (name);
}
- done:
- if (!header_done)
+ else if (lm_prev == 0)
{
- /* Empty list; terminate `<library-list-svr4'. */
- strcpy (p, "/>");
+ sprintf (p, " main-lm=\"0x%lx\"", (unsigned long) lm_addr);
+ p = p + strlen (p);
}
- else
- strcpy (p, "</library-list-svr4>");
+
+ lm_prev = lm_addr;
+ lm_addr = l_next;
}
+ if (!header_done)
+ {
+ /* Empty list; terminate `<library-list-svr4'. */
+ strcpy (p, "/>");
+ }
+ else
+ strcpy (p, "</library-list-svr4>");
+
document_len = strlen (document);
if (offset < document_len)
document_len -= offset;
--- src/gdb/gdbserver/server.c 2013/05/24 11:28:06 1.191
+++ src/gdb/gdbserver/server.c 2013/06/04 12:59:21 1.192
@@ -1115,8 +1115,7 @@
if (writebuf != NULL)
return -2;
- if (annex[0] != '\0' || !target_running ()
- || the_target->qxfer_libraries_svr4 == NULL)
+ if (!target_running () || the_target->qxfer_libraries_svr4 == NULL)
return -1;
return the_target->qxfer_libraries_svr4 (annex, readbuf, writebuf, offset, len);
@@ -1743,7 +1742,8 @@
PBUFSIZ - 1);
if (the_target->qxfer_libraries_svr4 != NULL)
- strcat (own_buf, ";qXfer:libraries-svr4:read+");
+ strcat (own_buf, ";qXfer:libraries-svr4:read+"
+ ";augmented-libraries-svr4-read+");
else
{
/* We do not have any hook to indicate whether the non-SVR4 target