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Note that an implemented BFD_RELOC_ARM_IMMEDIATE has been done. 

Do not issue reloc number of unimplemented BFD_RELOC_ARM_IMMEDIATE and
BFD_RELOC_ARM_OFFSET_IMM relocs - their name is already in the error message
- plus remove them from the default case.
Warn about unpredictable behavior of LDM and STM instructions.
This commit is contained in:
Nick Clifton 2002-09-17 19:23:00 +00:00
parent a741e51424
commit 6189168b13
2 changed files with 41 additions and 6 deletions
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12
gas/ChangeLog
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@ -1,3 +1,15 @@
2002-09-17 Nick Clifton <nickc@redhat.com>
* config/tc-arm.c (md_apply_fix3): Note that an implemented
BFD_RELOC_ARM_IMMEDIATE has been done.
(tc_gen_reloc): Do not issue reloc number of unimplemented
BFD_RELOC_ARM_IMMEDIATE and BFD_RELOC_ARM_OFFSET_IMM relocs -
their name is already in the error message - plus remove them
from the default case.
* config/tc-arm.c (do_ldmstm): Warn about unpredictable
behavior of instructions.
2002-09-17 Svein E. Seldal <Svein.Seldal@solidas.com>
* config/tc-tic4x.c: Add function declarations and ATTRIBUTE_UNUSED.

35
gas/config/tc-arm.c
View File

@ -5766,6 +5766,31 @@ do_ldmstm (str)
inst.instruction |= LDM_TYPE_2_OR_3;
}
if (inst.instruction & WRITE_BACK)
{
/* Check for unpredictable uses of writeback. */
if (inst.instruction & LOAD_BIT)
{
/* Not allowed in LDM type 2. */
if ((inst.instruction & LDM_TYPE_2_OR_3)
&& ((range & (1 << REG_PC)) == 0))
as_warn (_("writeback of base register is UNPREDICTABLE"));
/* Only allowed if base reg not in list for other types. */
else if (range & (1 << base_reg))
as_warn (_("writeback of base register when in register list is UNPREDICTABLE"));
}
else /* STM. */
{
/* Not allowed for type 2. */
if (inst.instruction & LDM_TYPE_2_OR_3)
as_warn (_("writeback of base register is UNPREDICTABLE"));
/* Only allowed if base reg not in list, or first in list. */
else if ((range & (1 << base_reg))
&& (range & ((1 << base_reg) - 1)))
as_warn (_("if writeback register is in list, it must be the lowest reg in the list"));
}
}
inst.instruction |= range;
end_of_line (str);
return;
@ -9652,12 +9677,14 @@ md_apply_fix3 (fixP, valP, seg)
newimm |= (temp & 0xfffff000);
md_number_to_chars (buf, (valueT) newimm, INSN_SIZE);
fixP->fx_done = 1;
break;
case BFD_RELOC_ARM_ADRL_IMMEDIATE:
{
unsigned int highpart = 0;
unsigned int newinsn = 0xe1a00000; /* nop. */
newimm = validate_immediate (value);
temp = md_chars_to_number (buf, INSN_SIZE);
@ -10274,8 +10301,7 @@ tc_gen_reloc (section, fixp)
case BFD_RELOC_ARM_IMMEDIATE:
as_bad_where (fixp->fx_file, fixp->fx_line,
_("internal relocation (type %d) not fixed up (IMMEDIATE)"),
fixp->fx_r_type);
_("internal relocation (type: IMMEDIATE) not fixed up"));
return NULL;
case BFD_RELOC_ARM_ADRL_IMMEDIATE:
@ -10285,8 +10311,7 @@ tc_gen_reloc (section, fixp)
case BFD_RELOC_ARM_OFFSET_IMM:
as_bad_where (fixp->fx_file, fixp->fx_line,
_("internal_relocation (type %d) not fixed up (OFFSET_IMM)"),
fixp->fx_r_type);
_("internal_relocation (type: OFFSET_IMM) not fixed up"));
return NULL;
default:
@ -10295,8 +10320,6 @@ tc_gen_reloc (section, fixp)
switch (fixp->fx_r_type)
{
case BFD_RELOC_ARM_IMMEDIATE: type = "IMMEDIATE"; break;
case BFD_RELOC_ARM_OFFSET_IMM: type = "OFFSET_IMM"; break;
case BFD_RELOC_ARM_OFFSET_IMM8: type = "OFFSET_IMM8"; break;
case BFD_RELOC_ARM_SHIFT_IMM: type = "SHIFT_IMM"; break;
case BFD_RELOC_ARM_SWI: type = "SWI"; break;