/* Instruction printing code for the ARC.
- Copyright (C) 1994-2017 Free Software Foundation, Inc.
+ Copyright (C) 1994-2019 Free Software Foundation, Inc.
Contributed by Claudiu Zissulescu (claziss@synopsys.com)
disassembling. */
static linkclass decodelist = NULL;
+/* ISA mask value enforced via disassembler info options. ARC_OPCODE_NONE
+ value means that no CPU is enforced. */
+
+static unsigned enforced_isa_mask = ARC_OPCODE_NONE;
+
+/* True if we want to print using only hex numbers. */
+static bfd_boolean print_hex = FALSE;
+
/* Macros section. */
#ifdef DEBUG
{
case FLOAT:
case DSP:
+ case ARITH:
break;
default:
return FALSE;
static void
parse_option (const char *option)
{
- if (CONST_STRNEQ (option, "dsp"))
+ if (disassembler_options_cmp (option, "dsp") == 0)
add_to_decodelist (DSP, NONE);
- else if (CONST_STRNEQ (option, "spfp"))
+ else if (disassembler_options_cmp (option, "spfp") == 0)
add_to_decodelist (FLOAT, SPX);
- else if (CONST_STRNEQ (option, "dpfp"))
+ else if (disassembler_options_cmp (option, "dpfp") == 0)
add_to_decodelist (FLOAT, DPX);
- else if (CONST_STRNEQ (option, "quarkse_em"))
+ else if (disassembler_options_cmp (option, "quarkse_em") == 0)
{
add_to_decodelist (FLOAT, DPX);
add_to_decodelist (FLOAT, SPX);
add_to_decodelist (FLOAT, QUARKSE2);
}
- else if (CONST_STRNEQ (option, "fpuda"))
+ else if (disassembler_options_cmp (option, "fpuda") == 0)
add_to_decodelist (FLOAT, DPA);
- else if (CONST_STRNEQ (option, "fpus"))
+ else if (disassembler_options_cmp (option, "fpus") == 0)
{
add_to_decodelist (FLOAT, SP);
add_to_decodelist (FLOAT, CVT);
}
- else if (CONST_STRNEQ (option, "fpud"))
+ else if (disassembler_options_cmp (option, "fpud") == 0)
{
add_to_decodelist (FLOAT, DP);
add_to_decodelist (FLOAT, CVT);
}
+ else if (CONST_STRNEQ (option, "hex"))
+ print_hex = TRUE;
else
- fprintf (stderr, _("Unrecognised disassembler option: %s\n"), option);
+ /* xgettext:c-format */
+ opcodes_error_handler (_("unrecognised disassembler option: %s"), option);
+}
+
+#define ARC_CPU_TYPE_A6xx(NAME,EXTRA) \
+ { #NAME, ARC_OPCODE_ARC600, "ARC600" }
+#define ARC_CPU_TYPE_A7xx(NAME,EXTRA) \
+ { #NAME, ARC_OPCODE_ARC700, "ARC700" }
+#define ARC_CPU_TYPE_AV2EM(NAME,EXTRA) \
+ { #NAME, ARC_OPCODE_ARCv2EM, "ARC EM" }
+#define ARC_CPU_TYPE_AV2HS(NAME,EXTRA) \
+ { #NAME, ARC_OPCODE_ARCv2HS, "ARC HS" }
+#define ARC_CPU_TYPE_NONE \
+ { 0, 0, 0 }
+
+/* A table of CPU names and opcode sets. */
+static const struct cpu_type
+{
+ const char *name;
+ unsigned flags;
+ const char *isa;
+}
+ cpu_types[] =
+{
+ #include "elf/arc-cpu.def"
+};
+
+/* Helper for parsing the CPU options. Accept any of the ARC architectures
+ values. OPTION should be a value passed to cpu=. */
+
+static unsigned
+parse_cpu_option (const char *option)
+{
+ int i;
+
+ for (i = 0; cpu_types[i].name; ++i)
+ {
+ if (!disassembler_options_cmp (cpu_types[i].name, option))
+ {
+ return cpu_types[i].flags;
+ }
+ }
+
+ /* xgettext:c-format */
+ opcodes_error_handler (_("unrecognised disassembler CPU option: %s"), option);
+ return ARC_OPCODE_NONE;
}
/* Go over the options list and parse it. */
static void
parse_disassembler_options (const char *options)
{
+ const char *option;
+
if (options == NULL)
return;
- while (*options)
- {
- /* Skip empty options. */
- if (*options == ',')
- {
- ++ options;
- continue;
- }
-
- parse_option (options);
+ /* Disassembler might be reused for difference CPU's, and cpu option set for
+ the first one shouldn't be applied to second (which might not have
+ explicit cpu in its options. Therefore it is required to reset enforced
+ CPU when new options are being parsed. */
+ enforced_isa_mask = ARC_OPCODE_NONE;
- while (*options != ',' && *options != '\0')
- ++ options;
+ FOR_EACH_DISASSEMBLER_OPTION (option, options)
+ {
+ /* A CPU option? Cannot use STRING_COMMA_LEN because strncmp is also a
+ preprocessor macro. */
+ if (strncmp (option, "cpu=", 4) == 0)
+ /* Strip leading `cpu=`. */
+ enforced_isa_mask = parse_cpu_option (option + 4);
+ else
+ parse_option (option);
}
}
int status;
unsigned int insn_len;
unsigned long long insn = 0;
- unsigned isa_mask;
+ unsigned isa_mask = ARC_OPCODE_NONE;
const struct arc_opcode *opcode;
bfd_boolean need_comma;
bfd_boolean open_braket;
int size;
const struct arc_operand *operand;
- int value;
+ int value, vpcl;
struct arc_operand_iterator iter;
- Elf_Internal_Ehdr *header = NULL;
struct arc_disassemble_info *arc_infop;
+ bfd_boolean rpcl = FALSE, rset = FALSE;
if (info->disassembler_options)
{
highbyte = ((info->endian == BFD_ENDIAN_LITTLE) ? 1 : 0);
lowbyte = ((info->endian == BFD_ENDIAN_LITTLE) ? 0 : 1);
- if (info->section && info->section->owner)
- header = elf_elfheader (info->section->owner);
-
- switch (info->mach)
+ /* Figure out CPU type, unless it was enforced via disassembler options. */
+ if (enforced_isa_mask == ARC_OPCODE_NONE)
{
- case bfd_mach_arc_arc700:
- isa_mask = ARC_OPCODE_ARC700;
- break;
+ Elf_Internal_Ehdr *header = NULL;
- case bfd_mach_arc_arc600:
- isa_mask = ARC_OPCODE_ARC600;
- break;
+ if (info->section && info->section->owner)
+ header = elf_elfheader (info->section->owner);
- case bfd_mach_arc_arcv2:
- default:
- isa_mask = ARC_OPCODE_ARCv2EM;
- /* TODO: Perhaps remove defitinion of header since it is only used at
- this location. */
- if (header != NULL
- && (header->e_flags & EF_ARC_MACH_MSK) == EF_ARC_CPU_ARCV2HS)
+ switch (info->mach)
{
- isa_mask = ARC_OPCODE_ARCv2HS;
- /* FPU instructions are not extensions for HS. */
- add_to_decodelist (FLOAT, SP);
- add_to_decodelist (FLOAT, DP);
- add_to_decodelist (FLOAT, CVT);
+ case bfd_mach_arc_arc700:
+ isa_mask = ARC_OPCODE_ARC700;
+ break;
+
+ case bfd_mach_arc_arc600:
+ isa_mask = ARC_OPCODE_ARC600;
+ break;
+
+ case bfd_mach_arc_arcv2:
+ default:
+ isa_mask = ARC_OPCODE_ARCv2EM;
+ /* TODO: Perhaps remove definition of header since it is only used at
+ this location. */
+ if (header != NULL
+ && (header->e_flags & EF_ARC_MACH_MSK) == EF_ARC_CPU_ARCV2HS)
+ isa_mask = ARC_OPCODE_ARCv2HS;
+ break;
}
- break;
+ }
+ else
+ isa_mask = enforced_isa_mask;
+
+ if (isa_mask == ARC_OPCODE_ARCv2HS)
+ {
+ /* FPU instructions are not extensions for HS. */
+ add_to_decodelist (FLOAT, SP);
+ add_to_decodelist (FLOAT, DP);
+ add_to_decodelist (FLOAT, CVT);
}
/* This variable may be set by the instruction decoder. It suggests
/* Read the insn into a host word. */
status = (*info->read_memory_func) (memaddr, buffer, size, info);
+
if (status != 0)
{
(*info->memory_error_func) (status, memaddr, info);
switch (insn_len)
{
case 2:
- (*info->fprintf_func) (info->stream, ".long %#04llx",
+ (*info->fprintf_func) (info->stream, ".shor\t%#04llx",
insn & 0xffff);
break;
case 4:
- (*info->fprintf_func) (info->stream, ".long %#08llx",
+ (*info->fprintf_func) (info->stream, ".word\t%#08llx",
insn & 0xffffffff);
break;
case 6:
- (*info->fprintf_func) (info->stream, ".long %#08llx",
+ (*info->fprintf_func) (info->stream, ".long\t%#08llx",
insn & 0xffffffff);
- (*info->fprintf_func) (info->stream, ".long %#04llx",
+ (*info->fprintf_func) (info->stream, ".long\t%#04llx",
(insn >> 32) & 0xffff);
break;
case 8:
- (*info->fprintf_func) (info->stream, ".long %#08llx",
+ (*info->fprintf_func) (info->stream, ".long\t%#08llx",
insn & 0xffffffff);
- (*info->fprintf_func) (info->stream, ".long %#08llx",
+ (*info->fprintf_func) (info->stream, ".long\t%#08llx",
insn >> 32);
break;
default:
/* Now extract and print the operands. */
operand = NULL;
+ vpcl = 0;
while (operand_iterator_next (&iter, &operand, &value))
{
if (open_braket && (operand->flags & ARC_OPERAND_BRAKET))
need_comma = TRUE;
+ if (operand->flags & ARC_OPERAND_PCREL)
+ {
+ rpcl = TRUE;
+ vpcl = value;
+ rset = TRUE;
+
+ info->target = (bfd_vma) (memaddr & ~3) + value;
+ }
+ else if (!(operand->flags & ARC_OPERAND_IR))
+ {
+ vpcl = value;
+ rset = TRUE;
+ }
+
/* Print the operand as directed by the flags. */
if (operand->flags & ARC_OPERAND_IR)
{
rname = regnames[value + 1];
(*info->fprintf_func) (info->stream, "%s", rname);
}
+ if (value == 63)
+ rpcl = TRUE;
+ else
+ rpcl = FALSE;
}
else if (operand->flags & ARC_OPERAND_LIMM)
{
info->target = (bfd_vma) value;
}
}
- else if (operand->flags & ARC_OPERAND_PCREL)
- {
- /* PCL relative. */
- if (info->flags & INSN_HAS_RELOC)
- memaddr = 0;
- (*info->print_address_func) ((memaddr & ~3) + value, info);
-
- info->target = (bfd_vma) (memaddr & ~3) + value;
- }
else if (operand->flags & ARC_OPERAND_SIGNED)
{
const char *rname = get_auxreg (opcode, value, isa_mask);
if (rname && open_braket)
(*info->fprintf_func) (info->stream, "%s", rname);
else
- (*info->fprintf_func) (info->stream, "%d", value);
+ {
+ if (print_hex)
+ (*info->fprintf_func) (info->stream, "%#x", value);
+ else
+ (*info->fprintf_func) (info->stream, "%d", value);
+ }
}
else if (operand->flags & ARC_OPERAND_ADDRTYPE)
{
&& !(operand->flags & ARC_OPERAND_ALIGNED16)
&& value >= 0 && value <= 14)
{
+ /* Leave/Enter mnemonics. */
switch (value)
{
case 0:
regnames[13 + value - 1]);
break;
}
+ rpcl = FALSE;
+ rset = FALSE;
}
else
{
arc_infop->operands_count ++;
}
+ /* Pretty print extra info for pc-relative operands. */
+ if (rpcl && rset)
+ {
+ if (info->flags & INSN_HAS_RELOC)
+ /* If the instruction has a reloc associated with it, then the
+ offset field in the instruction will actually be the addend
+ for the reloc. (We are using REL type relocs). In such
+ cases, we can ignore the pc when computing addresses, since
+ the addend is not currently pc-relative. */
+ memaddr = 0;
+
+ (*info->fprintf_func) (info->stream, "\t;");
+ (*info->print_address_func) ((memaddr & ~3) + vpcl, info);
+ }
+
return insn_len;
}
void
print_arc_disassembler_options (FILE *stream)
{
+ int i;
+
fprintf (stream, _("\n\
The following ARC specific disassembler options are supported for use \n\
with -M switch (multiple options should be separated by commas):\n"));
+ /* cpu=... options. */
+ for (i = 0; cpu_types[i].name; ++i)
+ {
+ /* As of now all value CPU values are less than 16 characters. */
+ fprintf (stream, " cpu=%-16s\tEnforce %s ISA.\n",
+ cpu_types[i].name, cpu_types[i].isa);
+ }
+
fprintf (stream, _("\
dsp Recognize DSP instructions.\n"));
fprintf (stream, _("\
fpus Recognize single precision FPU instructions.\n"));
fprintf (stream, _("\
fpud Recognize double precision FPU instructions.\n"));
+ fprintf (stream, _("\
+ hex Use only hexadecimal number to print immediates.\n"));
}
void arc_insn_decode (bfd_vma addr,
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