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Allow defs to specify use of offset relocations.

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Access to struct fields in near data can be done using only one operand,
but offset relocs need to be used. However, as not all defs want offset
relocs, a flag has been added to the def struct.
This commit is contained in:
Bill Currie 2011-02-15 22:43:07 +09:00
parent d04865884f
commit 9c9a71f1af
2 changed files with 6 additions and 1 deletions
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1
tools/qfcc/include/def.h
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@ -46,6 +46,7 @@ typedef struct def_s {
struct def_s *alias;
struct reloc_s *relocs; ///< for relocations
unsigned offset_reloc:1; ///< use *_def_ofs relocs
unsigned initialized:1;
unsigned constant:1; ///< stores constant value
unsigned global:1; ///< globally declared def

6
tools/qfcc/source/emit.c
View file

@ -122,6 +122,7 @@ get_operand_def (expr_t *expr, operand_t *op)
if (op->o.pointer->val || op->type != def->type->type) {
def = alias_def (def, ev_types[op->type]);
def->offset = op->o.pointer->val;
def->offset_reloc = 1;
}
return def;
}
@ -135,7 +136,10 @@ add_statement_def_ref (def_t *def, dstatement_t *st, int field)
int st_ofs = st - pr.code->code;
if (def->alias) {
reloc_op_def (def->alias, st_ofs, field);
if (def->offset_reloc)
reloc_op_def_ofs (def->alias, st_ofs, field);
else
reloc_op_def (def->alias, st_ofs, field);
free_def (def);
} else {
reloc_op_def (def, st_ofs, field);