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* sparc-tdep.c (sparc_get_saved_register): Comment why

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get_prev_frame call is safe.
This commit is contained in:
Andrew Cagney 2002-05-05 01:55:37 +00:00
parent 0f7d239c5a
commit f621c63e01
2 changed files with 15 additions and 0 deletions
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5
gdb/ChangeLog
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@ -1,3 +1,8 @@
2002-05-04 Andrew Cagney <ac131313@redhat.com>
* sparc-tdep.c (sparc_get_saved_register): Comment why
get_prev_frame call is safe.
2002-05-04 Andrew Cagney <ac131313@redhat.com>
* frame.h (select_frame): Delete level parameter.

10
gdb/sparc-tdep.c
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@ -855,10 +855,20 @@ sparc_get_saved_register (char *raw_buffer, int *optimized, CORE_ADDR *addrp,
addr = frame1->frame + (regnum - G0_REGNUM) * SPARC_INTREG_SIZE
- (FP_REGISTER_BYTES + 8 * SPARC_INTREG_SIZE);
else if (regnum >= I0_REGNUM && regnum < I0_REGNUM + 8)
/* NOTE: cagney/2002-05-04: The call to get_prev_frame()
is safe/cheap - there will always be a prev frame.
This is because frame1 is initialized to frame->next
(frame1->prev == frame) and is then advanced towards
the innermost (next) frame. */
addr = (get_prev_frame (frame1)->extra_info->bottom
+ (regnum - I0_REGNUM) * SPARC_INTREG_SIZE
+ FRAME_SAVED_I0);
else if (regnum >= L0_REGNUM && regnum < L0_REGNUM + 8)
/* NOTE: cagney/2002-05-04: The call to get_prev_frame()
is safe/cheap - there will always be a prev frame.
This is because frame1 is initialized to frame->next
(frame1->prev == frame) and is then advanced towards
the innermost (next) frame. */
addr = (get_prev_frame (frame1)->extra_info->bottom
+ (regnum - L0_REGNUM) * SPARC_INTREG_SIZE
+ FRAME_SAVED_L0);