Add comments in ravenscar_sparc_fetch_registers.

gdb/ChangeLog:

	* ravenscar-sparc-thread.c (ravenscar_sparc_fetch_registers):
	Add comments.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index be3bb1c2aa52ac0b4820f2d53079f34876c0aa22..cc24b22b01163952b7e0405af234ad7994c1c8d8 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2012-10-24  Tristan Gingold  <gingold@adacore.com>
+
+       * ravenscar-sparc-thread.c (ravenscar_sparc_fetch_registers):
+       Add comments.
+
 2012-10-24  Joel Brobecker  <brobecker@adacore.com>
 
        * ravenscar-thread.c (ravenscar_wait): Only update the list

diff --git a/gdb/ravenscar-sparc-thread.c b/gdb/ravenscar-sparc-thread.c
index 9132109d62bedf6c502837c465ecb5cf00510691..2a27a6333f90d22ba9302e90c597a95123cc4040 100644 (file)
--- a/gdb/ravenscar-sparc-thread.c
+++ b/gdb/ravenscar-sparc-thread.c
@@ -112,12 +112,16 @@ ravenscar_sparc_fetch_registers (struct regcache *regcache, int regnum)
   CORE_ADDR thread_descriptor_address;
   ULONGEST stack_address;
 
+  /* The tid is the thread_id field, which is a pointer to the thread.  */
   thread_descriptor_address = (CORE_ADDR) ptid_get_tid (inferior_ptid);
+
+  /* Read the saved SP in the context buffer.  */
   current_address = thread_descriptor_address
     + sparc_register_offsets [sp_regnum];
   supply_register_at_address (regcache, sp_regnum, current_address);
   regcache_cooked_read_unsigned (regcache, sp_regnum, &stack_address);
 
+  /* Read registers.  */
   for (current_regnum = 0; current_regnum < num_regs; current_regnum ++)
     {
       if (register_in_thread_descriptor_p (current_regnum))