2009-10-15 Michael Snyder <msnyder@vmware.com>
* record.c (record_reg_alloc): New function. (record_reg_release): New function. (record_mem_alloc): New function. (record_mem_release): New function. (record_end_alloc): New function. (record_end_release): New function. (record_entry_release): New function. (record_list_release): Simplify, call record_entry_release. (record_list_release_next): Rename to record_list_release_following. Simplify and call record_entry_release. (record_list_release_first): Simplify, comment, and use record_entry_release. (record_arch_list_add_reg): Simplify, call record_reg_alloc. (record_arch_list_add_mem): Simplify, call record_mem_alloc. (record_arch_list_add_end): Simplify, call record_end_alloc.
This commit is contained in:
Michael Snyder
parent
3fce87a0af
commit
61f75dd8bf
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@ -1,4 +1,22 @@
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2009-10-12 Michael Snyder <msnyder@vmware.com>
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2009-10-15 Michael Snyder <msnyder@vmware.com>
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* record.c (record_reg_alloc): New function.
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(record_reg_release): New function.
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(record_mem_alloc): New function.
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(record_mem_release): New function.
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(record_end_alloc): New function.
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(record_end_release): New function.
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(record_entry_release): New function.
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(record_list_release): Simplify, call record_entry_release.
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(record_list_release_next): Rename to record_list_release_following.
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Simplify and call record_entry_release.
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(record_list_release_first): Simplify, comment, and use
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record_entry_release.
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(record_arch_list_add_reg): Simplify, call record_reg_alloc.
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(record_arch_list_add_mem): Simplify, call record_mem_alloc.
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(record_arch_list_add_end): Simplify, call record_end_alloc.
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2009-10-14 Michael Snyder <msnyder@vmware.com>
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* record.c (record_list_release_first): Do not decrement
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record_insn_num.
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204
gdb/record.c
204
gdb/record.c
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@ -129,50 +129,143 @@ static int (*record_beneath_to_insert_breakpoint) (struct gdbarch *,
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static int (*record_beneath_to_remove_breakpoint) (struct gdbarch *,
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struct bp_target_info *);
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/* Alloc and free functions for record_reg, record_mem, and record_end
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entries. */
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/* Alloc a record_reg record entry. */
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static inline struct record_entry *
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record_reg_alloc (struct regcache *regcache, int regnum)
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{
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struct record_entry *rec;
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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rec = (struct record_entry *) xcalloc (1, sizeof (struct record_entry));
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rec->type = record_reg;
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rec->u.reg.num = regnum;
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rec->u.reg.val = (gdb_byte *) xmalloc (MAX_REGISTER_SIZE);
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return rec;
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}
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/* Free a record_reg record entry. */
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static inline void
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record_reg_release (struct record_entry *rec)
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{
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gdb_assert (rec->type == record_reg);
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xfree (rec->u.reg.val);
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xfree (rec);
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}
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/* Alloc a record_mem record entry. */
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static inline struct record_entry *
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record_mem_alloc (CORE_ADDR addr, int len)
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{
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struct record_entry *rec;
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rec = (struct record_entry *) xcalloc (1, sizeof (struct record_entry));
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rec->type = record_mem;
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rec->u.mem.addr = addr;
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rec->u.mem.len = len;
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rec->u.mem.val = (gdb_byte *) xmalloc (len);
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return rec;
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}
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/* Free a record_mem record entry. */
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static inline void
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record_mem_release (struct record_entry *rec)
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{
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gdb_assert (rec->type == record_mem);
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xfree (rec->u.mem.val);
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xfree (rec);
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}
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/* Alloc a record_end record entry. */
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static inline struct record_entry *
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record_end_alloc (void)
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{
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struct record_entry *rec;
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rec = (struct record_entry *) xcalloc (1, sizeof (struct record_entry));
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rec->type = record_end;
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return rec;
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}
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/* Free a record_end record entry. */
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static inline void
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record_end_release (struct record_entry *rec)
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{
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xfree (rec);
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}
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/* Free one record entry, any type.
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Return entry->type, in case caller wants to know. */
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static inline enum record_type
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record_entry_release (struct record_entry *rec)
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{
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enum record_type type = rec->type;
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switch (type) {
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case record_reg:
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record_reg_release (rec);
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break;
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case record_mem:
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record_mem_release (rec);
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break;
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case record_end:
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record_end_release (rec);
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break;
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}
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return type;
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}
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/* Free all record entries in list pointed to by REC. */
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static void
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record_list_release (struct record_entry *rec)
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{
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struct record_entry *tmp;
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if (!rec)
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return;
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while (rec->next)
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{
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rec = rec->next;
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}
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rec = rec->next;
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while (rec->prev)
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{
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tmp = rec;
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rec = rec->prev;
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if (tmp->type == record_reg)
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xfree (tmp->u.reg.val);
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else if (tmp->type == record_mem)
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xfree (tmp->u.mem.val);
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xfree (tmp);
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record_entry_release (rec->next);
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}
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if (rec != &record_first)
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xfree (rec);
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if (rec == &record_first)
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{
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record_insn_num = 0;
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record_first.next = NULL;
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}
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else
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record_entry_release (rec);
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}
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/* Free all record entries forward of the given list position. */
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static void
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record_list_release_next (void)
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record_list_release_following (struct record_entry *rec)
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{
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struct record_entry *rec = record_list;
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struct record_entry *tmp = rec->next;
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rec->next = NULL;
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while (tmp)
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{
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rec = tmp->next;
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if (tmp->type == record_end)
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if (record_entry_release (tmp) == record_end)
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record_insn_num--;
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else if (tmp->type == record_reg)
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xfree (tmp->u.reg.val);
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else if (tmp->type == record_mem)
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xfree (tmp->u.mem.val);
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xfree (tmp);
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tmp = rec;
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}
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}
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@ -185,34 +278,31 @@ record_list_release_next (void)
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static void
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record_list_release_first (void)
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{
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struct record_entry *tmp = NULL;
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enum record_type type;
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struct record_entry *tmp;
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if (!record_first.next)
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return;
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/* Loop until a record_end. */
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while (1)
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{
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type = record_first.next->type;
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if (type == record_reg)
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xfree (record_first.next->u.reg.val);
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else if (type == record_mem)
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xfree (record_first.next->u.mem.val);
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/* Cut record_first.next out of the linked list. */
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tmp = record_first.next;
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record_first.next = tmp->next;
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xfree (tmp);
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tmp->next->prev = &record_first;
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/* tmp is now isolated, and can be deleted. */
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if (record_entry_release (tmp) == record_end)
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{
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record_insn_num--;
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break; /* End loop at first record_end. */
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}
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if (!record_first.next)
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{
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gdb_assert (record_insn_num == 1);
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break;
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break; /* End loop when list is empty. */
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}
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record_first.next->prev = &record_first;
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if (type == record_end)
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break;
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}
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}
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@ -239,10 +329,10 @@ record_arch_list_add (struct record_entry *rec)
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}
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}
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/* Record the value of a register NUM to record_arch_list. */
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/* Record the value of a register REGNUM to record_arch_list. */
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int
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record_arch_list_add_reg (struct regcache *regcache, int num)
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record_arch_list_add_reg (struct regcache *regcache, int regnum)
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{
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struct record_entry *rec;
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@ -250,16 +340,11 @@ record_arch_list_add_reg (struct regcache *regcache, int num)
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fprintf_unfiltered (gdb_stdlog,
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"Process record: add register num = %d to "
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"record list.\n",
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num);
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regnum);
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rec = (struct record_entry *) xmalloc (sizeof (struct record_entry));
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rec->u.reg.val = (gdb_byte *) xmalloc (MAX_REGISTER_SIZE);
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rec->prev = NULL;
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rec->next = NULL;
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rec->type = record_reg;
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rec->u.reg.num = num;
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rec = record_reg_alloc (regcache, regnum);
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regcache_raw_read (regcache, num, rec->u.reg.val);
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regcache_raw_read (regcache, regnum, rec->u.reg.val);
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record_arch_list_add (rec);
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@ -280,17 +365,10 @@ record_arch_list_add_mem (CORE_ADDR addr, int len)
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"record list.\n",
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paddress (target_gdbarch, addr), len);
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if (!addr)
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if (!addr) /* FIXME: Why? Some arch must permit it... */
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return 0;
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rec = (struct record_entry *) xmalloc (sizeof (struct record_entry));
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rec->u.mem.val = (gdb_byte *) xmalloc (len);
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rec->prev = NULL;
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rec->next = NULL;
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rec->type = record_mem;
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rec->u.mem.addr = addr;
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rec->u.mem.len = len;
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rec->u.mem.mem_entry_not_accessible = 0;
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rec = record_mem_alloc (addr, len);
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if (target_read_memory (addr, rec->u.mem.val, len))
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{
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@ -299,8 +377,7 @@ record_arch_list_add_mem (CORE_ADDR addr, int len)
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"Process record: error reading memory at "
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"addr = %s len = %d.\n",
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paddress (target_gdbarch, addr), len);
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xfree (rec->u.mem.val);
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xfree (rec);
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record_mem_release (rec);
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return -1;
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}
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@ -320,10 +397,7 @@ record_arch_list_add_end (void)
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fprintf_unfiltered (gdb_stdlog,
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"Process record: add end to arch list.\n");
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rec = (struct record_entry *) xmalloc (sizeof (struct record_entry));
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rec->prev = NULL;
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rec->next = NULL;
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rec->type = record_end;
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rec = record_end_alloc ();
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rec->u.end.sigval = TARGET_SIGNAL_0;
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record_arch_list_add (rec);
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@ -818,7 +892,7 @@ record_wait (struct target_ops *ops,
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else
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{
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if (target_write_memory (record_list->u.mem.addr,
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record_list->u.mem.val,
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record_list->u.mem.val,
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record_list->u.mem.len))
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{
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if (execution_direction != EXEC_REVERSE)
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@ -1059,7 +1133,7 @@ record_store_registers (struct target_ops *ops, struct regcache *regcache,
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}
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/* Destroy the record from here forward. */
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record_list_release_next ();
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record_list_release_following (record_list);
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}
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record_registers_change (regcache, regno);
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@ -1091,7 +1165,7 @@ record_xfer_partial (struct target_ops *ops, enum target_object object,
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error (_("Process record canceled the operation."));
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/* Destroy the record from here forward. */
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record_list_release_next ();
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record_list_release_following (record_list);
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}
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/* Check record_insn_num */
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@ -1231,7 +1305,7 @@ cmd_record_delete (char *args, int from_tty)
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if (!from_tty || query (_("Delete the log from this point forward "
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"and begin to record the running message "
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"at current PC?")))
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record_list_release_next ();
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record_list_release_following (record_list);
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}
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else
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printf_unfiltered (_("Already at end of record list.\n"));
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