#define streq(a, b) (strcmp (a, b) == 0)
+/* Current set of feature bits available (CPU+FPU). Different from
+ selected_cpu + selected_fpu in case of autodetection since the CPU
+ feature bits are then all set. */
static arm_feature_set cpu_variant;
+/* Feature bits used in each execution state. Used to set build attribute
+ (in particular Tag_*_ISA_use) in CPU autodetection mode. */
static arm_feature_set arm_arch_used;
static arm_feature_set thumb_arch_used;
/* Variables that we set while parsing command-line options. Once all
options have been read we re-process these values to set the real
assembly flags. */
-static const arm_feature_set * legacy_cpu = NULL;
-static const arm_feature_set * legacy_fpu = NULL;
-
-static const arm_feature_set * mcpu_cpu_opt = NULL;
-static arm_feature_set * dyn_mcpu_ext_opt = NULL;
-static const arm_feature_set * mcpu_fpu_opt = NULL;
-static const arm_feature_set * march_cpu_opt = NULL;
-static arm_feature_set * dyn_march_ext_opt = NULL;
-static const arm_feature_set * march_fpu_opt = NULL;
-static const arm_feature_set * mfpu_opt = NULL;
-static const arm_feature_set * object_arch = NULL;
+
+/* CPU and FPU feature bits set for legacy CPU and FPU options (eg. -marm1
+ instead of -mcpu=arm1). */
+static const arm_feature_set *legacy_cpu = NULL;
+static const arm_feature_set *legacy_fpu = NULL;
+
+/* CPU, extension and FPU feature bits selected by -mcpu. */
+static const arm_feature_set *mcpu_cpu_opt = NULL;
+static arm_feature_set *mcpu_ext_opt = NULL;
+static const arm_feature_set *mcpu_fpu_opt = NULL;
+
+/* CPU, extension and FPU feature bits selected by -march. */
+static const arm_feature_set *march_cpu_opt = NULL;
+static arm_feature_set *march_ext_opt = NULL;
+static const arm_feature_set *march_fpu_opt = NULL;
+
+/* Feature bits selected by -mfpu. */
+static const arm_feature_set *mfpu_opt = NULL;
/* Constants for known architecture features. */
static const arm_feature_set fpu_default = FPU_DEFAULT;
ARM_FEATURE_COPROC (FPU_NEON_EXT_DOTPROD);
static int mfloat_abi_opt = -1;
-/* Record user cpu selection for object attributes. */
+/* Architecture feature bits selected by the last -mcpu/-march or .cpu/.arch
+ directive. */
+static arm_feature_set selected_arch = ARM_ARCH_NONE;
+/* Extension feature bits selected by the last -mcpu/-march or .arch_extension
+ directive. */
+static arm_feature_set selected_ext = ARM_ARCH_NONE;
+/* Feature bits selected by the last -mcpu/-march or by the combination of the
+ last .cpu/.arch directive .arch_extension directives since that
+ directive. */
static arm_feature_set selected_cpu = ARM_ARCH_NONE;
+/* FPU feature bits selected by the last -mfpu or .fpu directive. */
+static arm_feature_set selected_fpu = FPU_NONE;
+/* Feature bits selected by the last .object_arch directive. */
+static arm_feature_set selected_object_arch = ARM_ARCH_NONE;
/* Must be long enough to hold any of the names in arm_cpus. */
static char selected_cpu_name[20];
ARM_MERGE_FEATURE_SETS (arm_arch_used, arm_arch_used, *feature);
}
-/* If the given feature available in the selected CPU, mark it as used.
- Returns TRUE iff feature is available. */
+/* If the given feature is currently allowed, mark it as used and return TRUE.
+ Return FALSE otherwise. */
static bfd_boolean
mark_feature_used (const arm_feature_set *feature)
{
- /* Ensure the option is valid on the current architecture. */
+ /* Ensure the option is currently allowed. */
if (!ARM_CPU_HAS_FEATURE (cpu_variant, *feature))
return FALSE;
- /* Add the appropriate architecture feature for the barrier option used.
- */
+ /* Add the appropriate architecture feature for the barrier option used. */
record_feature_use (feature);
return TRUE;
/* Output R_ARM_V4BX relocations if is an EABI object that looks like
it is for ARMv4t or earlier. */
want_reloc = !ARM_CPU_HAS_FEATURE (selected_cpu, arm_ext_v5);
- if (object_arch && !ARM_CPU_HAS_FEATURE (*object_arch, arm_ext_v5))
+ if (!ARM_FEATURE_ZERO (selected_object_arch)
+ && !ARM_CPU_HAS_FEATURE (selected_object_arch, arm_ext_v5))
want_reloc = TRUE;
#ifdef OBJ_ELF
if (mcpu_cpu_opt || march_cpu_opt)
as_bad (_("use of old and new-style options to set CPU type"));
- mcpu_cpu_opt = legacy_cpu;
+ selected_arch = *legacy_cpu;
}
- else if (!mcpu_cpu_opt)
+ else if (mcpu_cpu_opt)
+ {
+ selected_arch = *mcpu_cpu_opt;
+ selected_ext = *mcpu_ext_opt;
+ }
+ else if (march_cpu_opt)
{
- mcpu_cpu_opt = march_cpu_opt;
- dyn_mcpu_ext_opt = dyn_march_ext_opt;
- /* Avoid double free in arm_md_end. */
- dyn_march_ext_opt = NULL;
+ selected_arch = *march_cpu_opt;
+ selected_ext = *march_ext_opt;
}
+ ARM_MERGE_FEATURE_SETS (selected_cpu, selected_arch, selected_ext);
if (legacy_fpu)
{
if (mfpu_opt)
as_bad (_("use of old and new-style options to set FPU type"));
- mfpu_opt = legacy_fpu;
+ selected_fpu = *legacy_fpu;
}
- else if (!mfpu_opt)
+ else if (mfpu_opt)
+ selected_fpu = *mfpu_opt;
+ else
{
#if !(defined (EABI_DEFAULT) || defined (TE_LINUX) \
|| defined (TE_NetBSD) || defined (TE_VXWORKS))
/* Some environments specify a default FPU. If they don't, infer it
from the processor. */
if (mcpu_fpu_opt)
- mfpu_opt = mcpu_fpu_opt;
+ selected_fpu = *mcpu_fpu_opt;
else
- mfpu_opt = march_fpu_opt;
+ selected_fpu = *march_fpu_opt;
#else
- mfpu_opt = &fpu_default;
+ selected_fpu = fpu_default;
#endif
}
- if (!mfpu_opt)
+ if (ARM_FEATURE_ZERO (selected_fpu))
{
- if (mcpu_cpu_opt != NULL)
- mfpu_opt = &fpu_default;
- else if (mcpu_fpu_opt != NULL && ARM_CPU_HAS_FEATURE (*mcpu_fpu_opt, arm_ext_v5))
- mfpu_opt = &fpu_arch_vfp_v2;
+ if (!no_cpu_selected ())
+ selected_fpu = fpu_default;
else
- mfpu_opt = &fpu_arch_fpa;
+ selected_fpu = fpu_arch_fpa;
}
#ifdef CPU_DEFAULT
- if (!mcpu_cpu_opt)
+ if (ARM_FEATURE_ZERO (selected_arch))
{
- mcpu_cpu_opt = &cpu_default;
- selected_cpu = cpu_default;
+ selected_arch = cpu_default;
+ selected_cpu = selected_arch;
}
- else if (dyn_mcpu_ext_opt)
- ARM_MERGE_FEATURE_SETS (selected_cpu, *mcpu_cpu_opt, *dyn_mcpu_ext_opt);
- else
- selected_cpu = *mcpu_cpu_opt;
+ ARM_MERGE_FEATURE_SETS (cpu_variant, selected_cpu, selected_fpu);
#else
- if (mcpu_cpu_opt && dyn_mcpu_ext_opt)
- ARM_MERGE_FEATURE_SETS (selected_cpu, *mcpu_cpu_opt, *dyn_mcpu_ext_opt);
- else if (mcpu_cpu_opt)
- selected_cpu = *mcpu_cpu_opt;
+ /* Autodection of feature mode: allow all features in cpu_variant but leave
+ selected_cpu unset. It will be set in aeabi_set_public_attributes ()
+ after all instruction have been processed and we can decide what CPU
+ should be selected. */
+ if (ARM_FEATURE_ZERO (selected_arch))
+ ARM_MERGE_FEATURE_SETS (cpu_variant, arm_arch_any, selected_fpu);
else
- mcpu_cpu_opt = &arm_arch_any;
+ ARM_MERGE_FEATURE_SETS (cpu_variant, selected_cpu, selected_fpu);
#endif
- ARM_MERGE_FEATURE_SETS (cpu_variant, *mcpu_cpu_opt, *mfpu_opt);
- if (dyn_mcpu_ext_opt)
- ARM_MERGE_FEATURE_SETS (cpu_variant, cpu_variant, *dyn_mcpu_ext_opt);
-
autoselect_thumb_from_cpu_variant ();
arm_arch_used = thumb_arch_used = arm_arch_none;
static bfd_boolean
arm_parse_extension (const char *str, const arm_feature_set *opt_set,
- arm_feature_set **ext_set_p)
+ arm_feature_set *ext_set)
{
/* We insist on extensions being specified in alphabetical order, and with
extensions being added before being removed. We achieve this by having
const arm_feature_set arm_any = ARM_ANY;
int adding_value = -1;
- if (!*ext_set_p)
- {
- *ext_set_p = XNEW (arm_feature_set);
- **ext_set_p = arm_arch_none;
- }
-
while (str != NULL && *str != 0)
{
const char *ext;
/* Add or remove the extension. */
if (adding_value)
- ARM_MERGE_FEATURE_SETS (**ext_set_p, **ext_set_p,
- opt->merge_value);
+ ARM_MERGE_FEATURE_SETS (*ext_set, *ext_set, opt->merge_value);
else
- ARM_CLEAR_FEATURE (**ext_set_p, **ext_set_p, opt->clear_value);
+ ARM_CLEAR_FEATURE (*ext_set, *ext_set, opt->clear_value);
/* Allowing Thumb division instructions for ARMv7 in autodetection
rely on this break so that duplicate extensions (extensions
if (opt->name_len == len && strncmp (opt->name, str, len) == 0)
{
mcpu_cpu_opt = &opt->value;
- if (!dyn_mcpu_ext_opt)
- dyn_mcpu_ext_opt = XNEW (arm_feature_set);
- *dyn_mcpu_ext_opt = opt->ext;
+ if (mcpu_ext_opt == NULL)
+ mcpu_ext_opt = XNEW (arm_feature_set);
+ *mcpu_ext_opt = opt->ext;
mcpu_fpu_opt = &opt->default_fpu;
if (opt->canonical_name)
{
}
if (ext != NULL)
- return arm_parse_extension (ext, mcpu_cpu_opt, &dyn_mcpu_ext_opt);
+ return arm_parse_extension (ext, mcpu_cpu_opt, mcpu_ext_opt);
return TRUE;
}
if (opt->name_len == len && strncmp (opt->name, str, len) == 0)
{
march_cpu_opt = &opt->value;
+ if (march_ext_opt == NULL)
+ march_ext_opt = XNEW (arm_feature_set);
+ *march_ext_opt = arm_arch_none;
march_fpu_opt = &opt->default_fpu;
strcpy (selected_cpu_name, opt->name);
if (ext != NULL)
- return arm_parse_extension (ext, march_cpu_opt, &dyn_march_ext_opt);
+ return arm_parse_extension (ext, march_cpu_opt, march_ext_opt);
return TRUE;
}
ARM_MERGE_FEATURE_SETS (flags, flags, arm_ext_v4t);
/* Code run during relaxation relies on selected_cpu being set. */
+ ARM_CLEAR_FEATURE (flags_arch, flags, fpu_any);
+ flags_ext = arm_arch_none;
+ ARM_CLEAR_FEATURE (selected_arch, flags_arch, flags_ext);
+ selected_ext = flags_ext;
selected_cpu = flags;
}
/* Otherwise, choose the architecture based on the capabilities of the
requested cpu. */
else
- flags = selected_cpu;
- ARM_MERGE_FEATURE_SETS (flags, flags, *mfpu_opt);
+ {
+ ARM_MERGE_FEATURE_SETS (flags_arch, selected_arch, selected_ext);
+ ARM_CLEAR_FEATURE (flags_arch, flags_arch, fpu_any);
+ flags_ext = selected_ext;
+ flags = selected_cpu;
+ }
+ ARM_MERGE_FEATURE_SETS (flags, flags, selected_fpu);
/* Allow the user to override the reported architecture. */
- if (object_arch)
+ if (!ARM_FEATURE_ZERO (selected_object_arch))
{
- ARM_CLEAR_FEATURE (flags_arch, *object_arch, fpu_any);
+ ARM_CLEAR_FEATURE (flags_arch, selected_object_arch, fpu_any);
flags_ext = arm_arch_none;
}
else
- {
- ARM_CLEAR_FEATURE (flags_arch, flags, fpu_any);
- flags_ext = dyn_mcpu_ext_opt ? *dyn_mcpu_ext_opt : arm_arch_none;
- skip_exact_match = ARM_FEATURE_EQUAL (selected_cpu, arm_arch_any);
- }
+ skip_exact_match = ARM_FEATURE_EQUAL (selected_cpu, arm_arch_any);
/* When this function is run again after relaxation has happened there is no
way to determine whether an architecture or CPU was specified by the user:
aeabi_set_attribute_int (Tag_CPU_arch_profile, profile);
/* Tag_DSP_extension. */
- if (dyn_mcpu_ext_opt && ARM_CPU_HAS_FEATURE (*dyn_mcpu_ext_opt, arm_ext_dsp))
+ if (ARM_CPU_HAS_FEATURE (selected_ext, arm_ext_dsp))
aeabi_set_attribute_int (Tag_DSP_extension, 1);
ARM_CLEAR_FEATURE (flags_arch, flags, fpu_any);
arm_md_post_relax (void)
{
aeabi_set_public_attributes ();
- XDELETE (dyn_mcpu_ext_opt);
- dyn_mcpu_ext_opt = NULL;
- XDELETE (dyn_march_ext_opt);
- dyn_march_ext_opt = NULL;
+ XDELETE (mcpu_ext_opt);
+ mcpu_ext_opt = NULL;
+ XDELETE (march_ext_opt);
+ march_ext_opt = NULL;
}
/* Add the default contents for the .ARM.attributes section. */
for (opt = arm_cpus + 1; opt->name != NULL; opt++)
if (streq (opt->name, name))
{
- mcpu_cpu_opt = &opt->value;
- if (!dyn_mcpu_ext_opt)
- dyn_mcpu_ext_opt = XNEW (arm_feature_set);
- *dyn_mcpu_ext_opt = opt->ext;
- ARM_MERGE_FEATURE_SETS (selected_cpu, *mcpu_cpu_opt, *dyn_mcpu_ext_opt);
+ selected_arch = opt->value;
+ selected_ext = opt->ext;
+ ARM_MERGE_FEATURE_SETS (selected_cpu, selected_arch, selected_ext);
if (opt->canonical_name)
strcpy (selected_cpu_name, opt->canonical_name);
else
selected_cpu_name[i] = 0;
}
- ARM_MERGE_FEATURE_SETS (cpu_variant, *mcpu_cpu_opt, *mfpu_opt);
- if (dyn_mcpu_ext_opt)
- ARM_MERGE_FEATURE_SETS (cpu_variant, cpu_variant, *dyn_mcpu_ext_opt);
+ ARM_MERGE_FEATURE_SETS (cpu_variant, selected_cpu, selected_fpu);
+
*input_line_pointer = saved_char;
demand_empty_rest_of_line ();
return;
for (opt = arm_archs + 1; opt->name != NULL; opt++)
if (streq (opt->name, name))
{
- mcpu_cpu_opt = &opt->value;
- XDELETE (dyn_mcpu_ext_opt);
- dyn_mcpu_ext_opt = NULL;
- selected_cpu = *mcpu_cpu_opt;
+ selected_arch = opt->value;
+ selected_ext = arm_arch_none;
+ selected_cpu = selected_arch;
strcpy (selected_cpu_name, opt->name);
- ARM_MERGE_FEATURE_SETS (cpu_variant, selected_cpu, *mfpu_opt);
+ ARM_MERGE_FEATURE_SETS (cpu_variant, selected_cpu, selected_fpu);
*input_line_pointer = saved_char;
demand_empty_rest_of_line ();
return;
for (opt = arm_archs + 1; opt->name != NULL; opt++)
if (streq (opt->name, name))
{
- object_arch = &opt->value;
+ selected_object_arch = opt->value;
*input_line_pointer = saved_char;
demand_empty_rest_of_line ();
return;
s_arm_arch_extension (int ignored ATTRIBUTE_UNUSED)
{
const struct arm_option_extension_value_table *opt;
- const arm_feature_set arm_any = ARM_ANY;
char saved_char;
char *name;
int adding_value = 1;
for (i = 0; i < nb_allowed_archs; i++)
{
/* Empty entry. */
- if (ARM_FEATURE_EQUAL (opt->allowed_archs[i], arm_any))
+ if (ARM_CPU_IS_ANY (opt->allowed_archs[i]))
continue;
- if (ARM_FSET_CPU_SUBSET (opt->allowed_archs[i], *mcpu_cpu_opt))
+ if (ARM_FSET_CPU_SUBSET (opt->allowed_archs[i], selected_arch))
break;
}
break;
}
- if (!dyn_mcpu_ext_opt)
- {
- dyn_mcpu_ext_opt = XNEW (arm_feature_set);
- *dyn_mcpu_ext_opt = arm_arch_none;
- }
if (adding_value)
- ARM_MERGE_FEATURE_SETS (*dyn_mcpu_ext_opt, *dyn_mcpu_ext_opt,
+ ARM_MERGE_FEATURE_SETS (selected_ext, selected_ext,
opt->merge_value);
else
- ARM_CLEAR_FEATURE (*dyn_mcpu_ext_opt, *dyn_mcpu_ext_opt,
- opt->clear_value);
+ ARM_CLEAR_FEATURE (selected_ext, selected_ext, opt->clear_value);
- ARM_MERGE_FEATURE_SETS (selected_cpu, *mcpu_cpu_opt, *dyn_mcpu_ext_opt);
- ARM_MERGE_FEATURE_SETS (cpu_variant, selected_cpu, *mfpu_opt);
+ ARM_MERGE_FEATURE_SETS (selected_cpu, selected_arch, selected_ext);
+ ARM_MERGE_FEATURE_SETS (cpu_variant, selected_cpu, selected_fpu);
*input_line_pointer = saved_char;
demand_empty_rest_of_line ();
/* Allowing Thumb division instructions for ARMv7 in autodetection rely
for (opt = arm_fpus; opt->name != NULL; opt++)
if (streq (opt->name, name))
{
- mfpu_opt = &opt->value;
- ARM_MERGE_FEATURE_SETS (cpu_variant, *mcpu_cpu_opt, *mfpu_opt);
- if (dyn_mcpu_ext_opt)
- ARM_MERGE_FEATURE_SETS (cpu_variant, cpu_variant, *dyn_mcpu_ext_opt);
+ selected_fpu = opt->value;
+#ifndef CPU_DEFAULT
+ if (no_cpu_selected ())
+ ARM_MERGE_FEATURE_SETS (cpu_variant, arm_arch_any, selected_fpu);
+ else
+#endif
+ ARM_MERGE_FEATURE_SETS (cpu_variant, selected_cpu, selected_fpu);
*input_line_pointer = saved_char;
demand_empty_rest_of_line ();
return;
projects / deliverable / binutils-gdb.git / commitdiff
