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rs6000.c (rs6000_parm_start): New function.

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* config/rs6000/rs6000.c (rs6000_parm_start): New function.
	(function_arg_advance): Use rs6000_parm_start.
	(function_arg, rs6000_arg_partial_bytes): Likewise.

From-SVN: r96771
This commit is contained in:
Alan Modra 2005-03-20 23:25:14 +00:00 committed by Alan Modra
parent ed248cf764
commit 294bd1822e
2 changed files with 26 additions and 16 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2005-03-21 Alan Modra <amodra@bigpond.net.au>
* config/rs6000/rs6000.c (rs6000_parm_start): New function.
(function_arg_advance): Use rs6000_parm_start.
(function_arg, rs6000_arg_partial_bytes): Likewise.
2005-03-20 Joseph S. Myers <joseph@codesourcery.com>
* c-common.c (check_case_value): Adjust comment about stripping

36
gcc/config/rs6000/rs6000.c
View File

@ -4060,6 +4060,20 @@ function_arg_boundary (enum machine_mode mode, tree type)
return PARM_BOUNDARY;
}
/* For a function parm of MODE and TYPE, return the starting word in
the parameter area. NWORDS of the parameter area are already used. */
static unsigned int
rs6000_parm_start (enum machine_mode mode, tree type, unsigned int nwords)
{
unsigned int align;
unsigned int parm_offset;
align = function_arg_boundary (mode, type) / PARM_BOUNDARY - 1;
parm_offset = DEFAULT_ABI == ABI_V4 ? 2 : 6;
return nwords + (-(parm_offset + nwords) & align);
}
/* Compute the size (in words) of a function argument. */
static unsigned long
@ -4314,15 +4328,10 @@ function_arg_advance (CUMULATIVE_ARGS *cum, enum machine_mode mode,
else
{
int n_words = rs6000_arg_size (mode, type);
int align = function_arg_boundary (mode, type) / PARM_BOUNDARY - 1;
int start_words = cum->words;
int align_words = rs6000_parm_start (mode, type, start_words);
/* The simple alignment calculation here works because
function_arg_boundary / PARM_BOUNDARY will only be 1 or 2.
If we ever want to handle alignments larger than 8 bytes for
32-bit or 16 bytes for 64-bit, then we'll need to take into
account the offset to the start of the parm save area. */
align &= cum->words;
cum->words += align + n_words;
cum->words = align_words + n_words;
if (GET_MODE_CLASS (mode) == MODE_FLOAT
&& TARGET_HARD_FLOAT && TARGET_FPRS)
@ -4335,7 +4344,7 @@ function_arg_advance (CUMULATIVE_ARGS *cum, enum machine_mode mode,
fprintf (stderr, "nargs = %4d, proto = %d, mode = %4s, ",
cum->nargs_prototype, cum->prototype, GET_MODE_NAME (mode));
fprintf (stderr, "named = %d, align = %d, depth = %d\n",
named, align, depth);
named, align_words - start_words, depth);
}
}
}
@ -4826,8 +4835,7 @@ function_arg (CUMULATIVE_ARGS *cum, enum machine_mode mode,
}
else
{
int align = function_arg_boundary (mode, type) / PARM_BOUNDARY - 1;
int align_words = cum->words + (cum->words & align);
int align_words = rs6000_parm_start (mode, type, cum->words);
if (USE_FP_FOR_ARG_P (cum, mode, type))
{
@ -4940,8 +4948,6 @@ rs6000_arg_partial_bytes (CUMULATIVE_ARGS *cum, enum machine_mode mode,
tree type, bool named)
{
int ret = 0;
int align;
int parm_offset;
int align_words;
if (DEFAULT_ABI == ABI_V4)
@ -4957,9 +4963,7 @@ rs6000_arg_partial_bytes (CUMULATIVE_ARGS *cum, enum machine_mode mode,
&& int_size_in_bytes (type) > 0)
return 0;
align = function_arg_boundary (mode, type) / PARM_BOUNDARY - 1;
parm_offset = TARGET_32BIT ? 2 : 0;
align_words = cum->words + ((parm_offset - cum->words) & align);
align_words = rs6000_parm_start (mode, type, cum->words);
if (USE_FP_FOR_ARG_P (cum, mode, type)
/* If we are passing this arg in gprs as well, then this function