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Remove some cleanups from solib-svr4.c 

This removes a few cleanups from solib-svr4.c in a straightforward
way.

gdb/ChangeLog
2018-03-30  Tom Tromey  <tom@tromey.com>

	* solib-svr4.c (lm_info_read): Use gdb::byte_vector.  Return
	std::unique_ptr.
	(svr4_keep_data_in_core): Update.
	(svr4_read_so_list): Update.
This commit is contained in:
Tom Tromey 2018-03-27 14:42:55 -06:00
parent e83e4e2402
commit a7961323e2
2 changed files with 23 additions and 46 deletions
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7
gdb/ChangeLog
View File

@ -1,3 +1,10 @@
2018-03-30 Tom Tromey <tom@tromey.com>
* solib-svr4.c (lm_info_read): Use gdb::byte_vector. Return
std::unique_ptr.
(svr4_keep_data_in_core): Update.
(svr4_read_so_list): Update.
2018-03-30 Tom Tromey <tom@tromey.com>
* windows-nat.c (handle_output_debug_string, handle_exception):

62
gdb/solib-svr4.c
View File

@ -168,28 +168,22 @@ svr4_same (struct so_list *gdb, struct so_list *inferior)
return (svr4_same_1 (gdb->so_original_name, inferior->so_original_name));
}
static lm_info_svr4 *
static std::unique_ptr<lm_info_svr4>
lm_info_read (CORE_ADDR lm_addr)
{
struct link_map_offsets *lmo = svr4_fetch_link_map_offsets ();
gdb_byte *lm;
lm_info_svr4 *lm_info;
struct cleanup *back_to;
std::unique_ptr<lm_info_svr4> lm_info;
lm = (gdb_byte *) xmalloc (lmo->link_map_size);
back_to = make_cleanup (xfree, lm);
gdb::byte_vector lm (lmo->link_map_size);
if (target_read_memory (lm_addr, lm, lmo->link_map_size) != 0)
{
warning (_("Error reading shared library list entry at %s"),
paddress (target_gdbarch (), lm_addr)),
lm_info = NULL;
}
if (target_read_memory (lm_addr, lm.data (), lmo->link_map_size) != 0)
warning (_("Error reading shared library list entry at %s"),
paddress (target_gdbarch (), lm_addr));
else
{
struct type *ptr_type = builtin_type (target_gdbarch ())->builtin_data_ptr;
lm_info = new lm_info_svr4;
lm_info.reset (new lm_info_svr4);
lm_info->lm_addr = lm_addr;
lm_info->l_addr_inferior = extract_typed_address (&lm[lmo->l_addr_offset],
@ -203,8 +197,6 @@ lm_info_read (CORE_ADDR lm_addr)
ptr_type);
}
do_cleanups (back_to);
return lm_info;
}
@ -958,8 +950,6 @@ svr4_keep_data_in_core (CORE_ADDR vaddr, unsigned long size)
{
struct svr4_info *info;
CORE_ADDR ldsomap;
struct so_list *newobj;
struct cleanup *old_chain;
CORE_ADDR name_lm;
info = get_svr4_info ();
@ -973,13 +963,8 @@ svr4_keep_data_in_core (CORE_ADDR vaddr, unsigned long size)
if (!ldsomap)
return 0;
newobj = XCNEW (struct so_list);
old_chain = make_cleanup (xfree, newobj);
lm_info_svr4 *li = lm_info_read (ldsomap);
newobj->lm_info = li;
make_cleanup (xfree, newobj->lm_info);
std::unique_ptr<lm_info_svr4> li = lm_info_read (ldsomap);
name_lm = li != NULL ? li->l_name : 0;
do_cleanups (old_chain);
return (name_lm >= vaddr && name_lm < vaddr + size);
}
@ -995,8 +980,7 @@ open_symbol_file_object (int from_tty)
struct link_map_offsets *lmo = svr4_fetch_link_map_offsets ();
struct type *ptr_type = builtin_type (target_gdbarch ())->builtin_data_ptr;
int l_name_size = TYPE_LENGTH (ptr_type);
gdb_byte *l_name_buf = (gdb_byte *) xmalloc (l_name_size);
struct cleanup *cleanups = make_cleanup (xfree, l_name_buf);
gdb::byte_vector l_name_buf (l_name_size);
struct svr4_info *info = get_svr4_info ();
symfile_add_flags add_flags = 0;
@ -1005,38 +989,26 @@ open_symbol_file_object (int from_tty)
if (symfile_objfile)
if (!query (_("Attempt to reload symbols from process? ")))
{
do_cleanups (cleanups);
return 0;
}
return 0;
/* Always locate the debug struct, in case it has moved. */
info->debug_base = 0;
if (locate_base (info) == 0)
{
do_cleanups (cleanups);
return 0; /* failed somehow... */
}
return 0; /* failed somehow... */
/* First link map member should be the executable. */
lm = solib_svr4_r_map (info);
if (lm == 0)
{
do_cleanups (cleanups);
return 0; /* failed somehow... */
}
return 0; /* failed somehow... */
/* Read address of name from target memory to GDB. */
read_memory (lm + lmo->l_name_offset, l_name_buf, l_name_size);
read_memory (lm + lmo->l_name_offset, l_name_buf.data (), l_name_size);
/* Convert the address to host format. */
l_name = extract_typed_address (l_name_buf, ptr_type);
l_name = extract_typed_address (l_name_buf.data (), ptr_type);
if (l_name == 0)
{
do_cleanups (cleanups);
return 0; /* No filename. */
}
return 0; /* No filename. */
/* Now fetch the filename from target memory. */
target_read_string (l_name, &filename, SO_NAME_MAX_PATH_SIZE - 1, &errcode);
@ -1045,14 +1017,12 @@ open_symbol_file_object (int from_tty)
{
warning (_("failed to read exec filename from attached file: %s"),
safe_strerror (errcode));
do_cleanups (cleanups);
return 0;
}
/* Have a pathname: read the symbol file. */
symbol_file_add_main (filename.get (), add_flags);
do_cleanups (cleanups);
return 1;
}
@ -1342,7 +1312,7 @@ svr4_read_so_list (CORE_ADDR lm, CORE_ADDR prev_lm,
so_list_up newobj (XCNEW (struct so_list));
lm_info_svr4 *li = lm_info_read (lm);
lm_info_svr4 *li = lm_info_read (lm).release ();
newobj->lm_info = li;
if (li == NULL)
return 0;