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rs6000: Update ELFv2 stack frame comment showing the correct ROP save location

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The ELFv2 stack frame layout comment in rs6000-logue.cc shows the ROP
hash save slot in the wrong location.  Update the comment to show the
correct ROP hash save location in the frame.

2024-06-07  Peter Bergner  <bergner@linux.ibm.com>

gcc/
	* config/rs6000/rs6000-logue.cc (rs6000_stack_info): Update comment.

(cherry picked from commit e91cf26a954a5c1bf431e36f3a1e69f94e9fa4fe)
This commit is contained in:
Peter Bergner 2024-06-07 16:03:08 -05:00
parent 27ef3a0779
commit c33532c597
1 changed files with 8 additions and 8 deletions
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16
gcc/config/rs6000/rs6000-logue.cc
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@ -591,21 +591,21 @@ rs6000_savres_strategy (rs6000_stack_t *info,
+---------------------------------------+
| Parameter save area (+padding*) (P) | 32
+---------------------------------------+
| Optional ROP hash slot (R) | 32+P
| Alloca space (A) | 32+P
+---------------------------------------+
| Alloca space (A) | 32+P+R
| Local variable space (L) | 32+P+A
+---------------------------------------+
| Local variable space (L) | 32+P+R+A
| Optional ROP hash slot (R) | 32+P+A+L
+---------------------------------------+
| Save area for AltiVec registers (W) | 32+P+R+A+L
| Save area for AltiVec registers (W) | 32+P+A+L+R
+---------------------------------------+
| AltiVec alignment padding (Y) | 32+P+R+A+L+W
| AltiVec alignment padding (Y) | 32+P+A+L+R+W
+---------------------------------------+
| Save area for GP registers (G) | 32+P+R+A+L+W+Y
| Save area for GP registers (G) | 32+P+A+L+R+W+Y
+---------------------------------------+
| Save area for FP registers (F) | 32+P+R+A+L+W+Y+G
| Save area for FP registers (F) | 32+P+A+L+R+W+Y+G
+---------------------------------------+
old SP->| back chain to caller's caller | 32+P+R+A+L+W+Y+G+F
old SP->| back chain to caller's caller | 32+P+A+L+R+W+Y+G+F
+---------------------------------------+
* If the alloca area is present, the parameter save area is