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* config/obj-elf.h (obj_elf_seen_attribute): Declare.
	* config/obj-elf.c (recorded_attribute_info): New structure.
	(recorded_attributes): New variable.
	(record_attribute, obj_elf_seen_attribute): New functions.
	(obj_elf_vendor_attribute): Record which attributes have been seen.
This commit is contained in:
Richard Sandiford
2014-05-20 19:02:41 +01:00
parent 802e8e6d84
commit 9440a90459
3 changed files with 67 additions and 0 deletions
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57
gas/config/obj-elf.c
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@@ -1458,6 +1458,62 @@ skip_past_char (char ** str, char c)
}
#define skip_past_comma(str) skip_past_char (str, ',')
/* A list of attributes that have been explicitly set by the assembly code.
VENDOR is the vendor id, BASE is the tag shifted right by the number
of bits in MASK, and bit N of MASK is set if tag BASE+N has been set. */
struct recorded_attribute_info {
struct recorded_attribute_info *next;
int vendor;
unsigned int base;
unsigned long mask;
};
static struct recorded_attribute_info *recorded_attributes;
/* Record that we have seen an explicit specification of attribute TAG
for vendor VENDOR. */
static void
record_attribute (int vendor, unsigned int tag)
{
unsigned int base;
unsigned long mask;
struct recorded_attribute_info *rai;
base = tag / (8 * sizeof (rai->mask));
mask = 1UL << (tag % (8 * sizeof (rai->mask)));
for (rai = recorded_attributes; rai; rai = rai->next)
if (rai->vendor == vendor && rai->base == base)
{
rai->mask |= mask;
return;
}
rai = XNEW (struct recorded_attribute_info);
rai->next = recorded_attributes;
rai->vendor = vendor;
rai->base = base;
rai->mask = mask;
recorded_attributes = rai;
}
/* Return true if we have seen an explicit specification of attribute TAG
for vendor VENDOR. */
bfd_boolean
obj_elf_seen_attribute (int vendor, unsigned int tag)
{
unsigned int base;
unsigned long mask;
struct recorded_attribute_info *rai;
base = tag / (8 * sizeof (rai->mask));
mask = 1UL << (tag % (8 * sizeof (rai->mask)));
for (rai = recorded_attributes; rai; rai = rai->next)
if (rai->vendor == vendor && rai->base == base)
return (rai->mask & mask) != 0;
return FALSE;
}
/* Parse an attribute directive for VENDOR.
Returns the attribute number read, or zero on error. */
@@ -1540,6 +1596,7 @@ obj_elf_vendor_attribute (int vendor)
s = demand_copy_C_string (&len);
}
record_attribute (vendor, tag);
switch (type & 3)
{
case 3: