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Diffstat (limited to 'gas/config/tc-cr16.c')
-rw-r--r--gas/config/tc-cr16.c116
1 files changed, 108 insertions, 8 deletions
diff --git a/gas/config/tc-cr16.c b/gas/config/tc-cr16.c
index 7fec215..171e3f3 100644
--- a/gas/config/tc-cr16.c
+++ b/gas/config/tc-cr16.c
@@ -99,6 +99,11 @@ const char EXP_CHARS[] = "eE";
/* Chars that mean this number is a floating point constant as in 0f12.456 */
const char FLT_CHARS[] = "f'";
+#ifdef OBJ_ELF
+/* Pre-defined "_GLOBAL_OFFSET_TABLE_" */
+symbolS * GOT_symbol;
+#endif
+
/* Target-specific multicharacter options, not const-declared at usage. */
const char *md_shortopts = "";
struct option md_longopts[] =
@@ -236,7 +241,6 @@ l_cons (int nbytes)
demand_empty_rest_of_line ();
}
-
/* This table describes all the machine specific pseudo-ops
the assembler has to support. The fields are:
*** Pseudo-op name without dot.
@@ -248,6 +252,7 @@ const pseudo_typeS md_pseudo_table[] =
/* In CR16 machine, align is in bytes (not a ptwo boundary). */
{"align", s_align_bytes, 0},
{"long", l_cons, 4 },
+ {"4byte", l_cons, 4 },
{0, 0, 0}
};
@@ -489,7 +494,8 @@ cr16_force_relocation (fixS *fix)
void
cr16_cons_fix_new (fragS *frag, int offset, int len, expressionS *exp)
{
- int rtype;
+ int rtype = BFD_RELOC_UNUSED;
+
switch (len)
{
default: rtype = BFD_RELOC_NONE; break;
@@ -515,6 +521,7 @@ arelent *
tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, fixS * fixP)
{
arelent * reloc;
+ bfd_reloc_code_real_type code;
reloc = xmalloc (sizeof (arelent));
reloc->sym_ptr_ptr = xmalloc (sizeof (asymbol *));
@@ -562,6 +569,22 @@ tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, fixS * fixP)
segment_name (S_GET_SEGMENT (fixP->fx_addsy)));
}
}
+#ifdef OBJ_ELF
+ if ((fixP->fx_r_type == BFD_RELOC_CR16_GOT_REGREL20)
+ && GOT_symbol
+ && fixP->fx_addsy == GOT_symbol)
+ {
+ code = BFD_RELOC_CR16_GOT_REGREL20;
+ reloc->addend = fixP->fx_offset = reloc->address;
+ }
+ else if ((fixP->fx_r_type == BFD_RELOC_CR16_GOTC_REGREL20)
+ && GOT_symbol
+ && fixP->fx_addsy == GOT_symbol)
+ {
+ code = BFD_RELOC_CR16_GOTC_REGREL20;
+ reloc->addend = fixP->fx_offset = reloc->address;
+ }
+#endif
assert ((int) fixP->fx_r_type > 0);
reloc->howto = bfd_reloc_type_lookup (stdoutput, fixP->fx_r_type);
@@ -653,6 +676,24 @@ md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, fragS *fragP)
fragP->fr_fix += md_relax_table[fragP->fr_subtype].rlx_length;
}
+symbolS *
+md_undefined_symbol (char *name)
+{
+ if (*name == '_' && *(name + 1) == 'G'
+ && strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0)
+ {
+ if (!GOT_symbol)
+ {
+ if (symbol_find (name))
+ as_bad (_("GOT already in symbol table"));
+ GOT_symbol = symbol_new (name, undefined_section,
+ (valueT) 0, &zero_address_frag);
+ }
+ return GOT_symbol;
+ }
+ return 0;
+}
+
/* Process machine-dependent command line options. Called once for
each option on the command line that the machine-independent part of
GAS does not understand. */
@@ -813,6 +854,8 @@ process_label_constant (char *str, ins * cr16_ins)
int symbol_with_s = 0;
int symbol_with_m = 0;
int symbol_with_l = 0;
+ int symbol_with_at_got = 0;
+ int symbol_with_at_gotc = 0;
argument *cur_arg = cr16_ins->arg + cur_arg_num; /* Current argument. */
saved_input_line_pointer = input_line_pointer;
@@ -842,6 +885,8 @@ process_label_constant (char *str, ins * cr16_ins)
case O_subtract:
case O_add:
cur_arg->X_op = O_symbol;
+ cur_arg->constant = cr16_ins->exp.X_add_number;
+ cr16_ins->exp.X_add_number = 0;
cr16_ins->rtype = BFD_RELOC_NONE;
relocatable = 1;
@@ -860,12 +905,37 @@ process_label_constant (char *str, ins * cr16_ins)
|| strneq (input_line_pointer, ":s", 2))
symbol_with_s = 1;
+ if (strneq (input_line_pointer, "@cGOT", 5)
+ || strneq (input_line_pointer, "@cgot", 5))
+ {
+ if (GOT_symbol == NULL)
+ GOT_symbol = symbol_find_or_make (GLOBAL_OFFSET_TABLE_NAME);
+
+ symbol_with_at_gotc = 1;
+ }
+ else if (strneq (input_line_pointer, "@GOT", 4)
+ || strneq (input_line_pointer, "@got", 4))
+ {
+ if ((strneq (input_line_pointer, "+", 1))
+ || (strneq (input_line_pointer, "-", 1)))
+ as_warn (_("GOT bad expression with %s."), input_line_pointer);
+
+ if (GOT_symbol == NULL)
+ GOT_symbol = symbol_find_or_make (GLOBAL_OFFSET_TABLE_NAME);
+
+ symbol_with_at_got = 1;
+ }
+
switch (cur_arg->type)
{
case arg_cr:
if (IS_INSN_TYPE (LD_STOR_INS) || IS_INSN_TYPE (CSTBIT_INS))
{
- if (cur_arg->size == 20)
+ if (symbol_with_at_got)
+ cr16_ins->rtype = BFD_RELOC_CR16_GOT_REGREL20;
+ else if (symbol_with_at_gotc)
+ cr16_ins->rtype = BFD_RELOC_CR16_GOTC_REGREL20;
+ else if (cur_arg->size == 20)
cr16_ins->rtype = BFD_RELOC_CR16_REGREL20;
else
cr16_ins->rtype = BFD_RELOC_CR16_REGREL20a;
@@ -874,6 +944,12 @@ process_label_constant (char *str, ins * cr16_ins)
case arg_crp:
if (IS_INSN_TYPE (LD_STOR_INS) || IS_INSN_TYPE (CSTBIT_INS))
+ {
+ if (symbol_with_at_got)
+ cr16_ins->rtype = BFD_RELOC_CR16_GOT_REGREL20;
+ else if (symbol_with_at_gotc)
+ cr16_ins->rtype = BFD_RELOC_CR16_GOTC_REGREL20;
+ } else {
switch (instruction->size)
{
case 1:
@@ -903,15 +979,29 @@ process_label_constant (char *str, ins * cr16_ins)
default:
break;
}
+ }
break;
case arg_idxr:
if (IS_INSN_TYPE (LD_STOR_INS) || IS_INSN_TYPE (CSTBIT_INS))
- cr16_ins->rtype = BFD_RELOC_CR16_REGREL20;
+ {
+ if (symbol_with_at_got)
+ cr16_ins->rtype = BFD_RELOC_CR16_GOT_REGREL20;
+ else if (symbol_with_at_gotc)
+ cr16_ins->rtype = BFD_RELOC_CR16_GOTC_REGREL20;
+ else
+ cr16_ins->rtype = BFD_RELOC_CR16_REGREL20;
+ }
break;
case arg_idxrp:
if (IS_INSN_TYPE (LD_STOR_INS) || IS_INSN_TYPE (CSTBIT_INS))
+ {
+ if (symbol_with_at_got)
+ cr16_ins->rtype = BFD_RELOC_CR16_GOT_REGREL20;
+ else if (symbol_with_at_gotc)
+ cr16_ins->rtype = BFD_RELOC_CR16_GOTC_REGREL20;
+ else {
switch (instruction->size)
{
case 1: cr16_ins->rtype = BFD_RELOC_CR16_REGREL0; break;
@@ -919,6 +1009,8 @@ process_label_constant (char *str, ins * cr16_ins)
case 3: cr16_ins->rtype = BFD_RELOC_CR16_REGREL20; break;
default: break;
}
+ }
+ }
break;
case arg_c:
@@ -936,9 +1028,13 @@ process_label_constant (char *str, ins * cr16_ins)
else if (IS_INSN_TYPE (STOR_IMM_INS) || IS_INSN_TYPE (LD_STOR_INS)
|| IS_INSN_TYPE (CSTBIT_INS))
{
- if (symbol_with_s)
+ if (symbol_with_s)
as_bad (_("operand %d: illegal use expression: `%s`"), cur_arg_num + 1, str);
- if (symbol_with_m)
+ if (symbol_with_at_got)
+ cr16_ins->rtype = BFD_RELOC_CR16_GOT_REGREL20;
+ else if (symbol_with_at_gotc)
+ cr16_ins->rtype = BFD_RELOC_CR16_GOTC_REGREL20;
+ else if (symbol_with_m)
cr16_ins->rtype = BFD_RELOC_CR16_ABS20;
else /* Default to (symbol_with_l) */
cr16_ins->rtype = BFD_RELOC_CR16_ABS24;
@@ -950,7 +1046,11 @@ process_label_constant (char *str, ins * cr16_ins)
case arg_ic:
if (IS_INSN_TYPE (ARITH_INS))
{
- if (symbol_with_s)
+ if (symbol_with_at_got)
+ cr16_ins->rtype = BFD_RELOC_CR16_GOT_REGREL20;
+ else if (symbol_with_at_gotc)
+ cr16_ins->rtype = BFD_RELOC_CR16_GOTC_REGREL20;
+ else if (symbol_with_s)
cr16_ins->rtype = BFD_RELOC_CR16_IMM4;
else if (symbol_with_m)
cr16_ins->rtype = BFD_RELOC_CR16_IMM20;
@@ -2330,7 +2430,7 @@ print_insn (ins *insn)
this_frag = frag_var (rs_machine_dependent, insn_size *2,
4, relax_subtype,
insn->exp.X_add_symbol,
- insn->exp.X_add_number,
+ 0,
0);
}
else
generated by cgit v1.1 at 2024-12-30 08:20:24 +0000