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* sparc.c (sparc_flat_compute_frame_size): Correctly calc args_size

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From-SVN: r23634
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Stan Cox 1998-11-13 11:04:17 +00:00 • committed by Stan Cox
parent a49fb37af2
commit 8c64be75d3
2 changed files with 27 additions and 13 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
Fri Nov 13 11:02:11 1998 Stan Cox <scox@cygnus.com>
* sparc.c (sparc_flat_compute_frame_size): Correctly calc args_size
in a leaf function. Clarify total_size/extra_size relationship.
Thu Nov 12 19:20:57 1998 Geoffrey Noer <noer@cygnus.com>
* i386/cygwin32.asm: Delete.

35
gcc/config/sparc/sparc.c
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@ -5630,18 +5630,23 @@ sparc_flat_compute_frame_size (size)
/* This is the size of the 16 word reg save area, 1 word struct addr
area, and 4 word fp/alu register copy area. */
extra_size = -STARTING_FRAME_OFFSET + FIRST_PARM_OFFSET(0);
var_size = size;
/* Also include the size needed for the 6 parameter registers. */
args_size = current_function_outgoing_args_size + 24;
total_size = var_size + args_size + extra_size;
gp_reg_size = 0;
fp_reg_size = 0;
gmask = 0;
fmask = 0;
reg_offset = 0;
extra_size = -STARTING_FRAME_OFFSET + FIRST_PARM_OFFSET(0);
var_size = size;
gp_reg_size = 0;
fp_reg_size = 0;
gmask = 0;
fmask = 0;
reg_offset = 0;
need_aligned_p = 0;
args_size = 0;
if (!leaf_function_p ())
{
/* Also include the size needed for the 6 parameter registers. */
args_size = current_function_outgoing_args_size + 24;
}
total_size = var_size + args_size;
/* Calculate space needed for gp registers. */
for (regno = 1; regno <= 31; regno++)
{
@ -5690,9 +5695,13 @@ sparc_flat_compute_frame_size (size)
total_size += gp_reg_size + fp_reg_size;
}
/* ??? This looks a little suspicious. Clarify. */
if (total_size == extra_size)
total_size = extra_size = 0;
/* If we must allocate a stack frame at all, we must also allocate
room for register window spillage, so as to be binary compatible
with libraries and operating systems that do not use -mflat. */
if (total_size > 0)
total_size += extra_size;
else
extra_size = 0;
total_size = SPARC_STACK_ALIGN (total_size);