/* The default processor used if not overridden by commandline. */
static enum processor_type arm_default_cpu = arm_none;
-/* Which floating point model to use. */
-enum arm_fp_model arm_fp_model;
-
-/* Which floating point hardware is available. */
-enum fputype arm_fpu_arch;
-
/* Which floating point hardware to schedule for. */
-enum fputype arm_fpu_tune;
+int arm_fpu_attr;
+
+/* Which floating popint hardware to use. */
+const struct arm_fpu_desc *arm_fpu_desc;
/* Whether to use floating point hardware. */
enum float_abi_type arm_float_abi;
char arm_arch_name[] = "__ARM_ARCH_0UNK__";
-struct fpu_desc
-{
- const char * name;
- enum fputype fpu;
-};
-
-
/* Available values for -mfpu=. */
-static const struct fpu_desc all_fpus[] =
-{
- {"fpa", FPUTYPE_FPA},
- {"fpe2", FPUTYPE_FPA_EMU2},
- {"fpe3", FPUTYPE_FPA_EMU2},
- {"maverick", FPUTYPE_MAVERICK},
- {"vfp", FPUTYPE_VFP},
- {"vfp3", FPUTYPE_VFP3},
- {"vfpv3", FPUTYPE_VFP3},
- {"vfpv3-d16", FPUTYPE_VFP3D16},
- {"neon", FPUTYPE_NEON},
- {"neon-fp16", FPUTYPE_NEON_FP16}
-};
-
-
-/* Floating point models used by the different hardware.
- See fputype in arm.h. */
-
-static const enum arm_fp_model fp_model_for_fpu[] =
-{
- /* No FP hardware. */
- ARM_FP_MODEL_UNKNOWN, /* FPUTYPE_NONE */
- ARM_FP_MODEL_FPA, /* FPUTYPE_FPA */
- ARM_FP_MODEL_FPA, /* FPUTYPE_FPA_EMU2 */
- ARM_FP_MODEL_FPA, /* FPUTYPE_FPA_EMU3 */
- ARM_FP_MODEL_MAVERICK, /* FPUTYPE_MAVERICK */
- ARM_FP_MODEL_VFP, /* FPUTYPE_VFP */
- ARM_FP_MODEL_VFP, /* FPUTYPE_VFP3D16 */
- ARM_FP_MODEL_VFP, /* FPUTYPE_VFP3 */
- ARM_FP_MODEL_VFP, /* FPUTYPE_NEON */
- ARM_FP_MODEL_VFP /* FPUTYPE_NEON_FP16 */
+static const struct arm_fpu_desc all_fpus[] =
+{
+ {"fpa", ARM_FP_MODEL_FPA, 0, 0, false, false},
+ {"fpe2", ARM_FP_MODEL_FPA, 2, 0, false, false},
+ {"fpe3", ARM_FP_MODEL_FPA, 3, 0, false, false},
+ {"maverick", ARM_FP_MODEL_MAVERICK, 0, 0, false, false},
+ {"vfp", ARM_FP_MODEL_VFP, 2, VFP_REG_D16, false, false},
+ {"vfpv3", ARM_FP_MODEL_VFP, 3, VFP_REG_D32, false, false},
+ {"vfpv3-d16", ARM_FP_MODEL_VFP, 3, VFP_REG_D16, false, false},
+ {"neon", ARM_FP_MODEL_VFP, 3, VFP_REG_D32, true , false},
+ {"neon-fp16", ARM_FP_MODEL_VFP, 3, VFP_REG_D32, true , true },
+ /* Compatibility aliases. */
+ {"vfp3", ARM_FP_MODEL_VFP, 3, VFP_REG_D32, false, false},
};
if (TARGET_IWMMXT_ABI && !TARGET_IWMMXT)
error ("iwmmxt abi requires an iwmmxt capable cpu");
- arm_fp_model = ARM_FP_MODEL_UNKNOWN;
if (target_fpu_name == NULL && target_fpe_name != NULL)
{
if (streq (target_fpe_name, "2"))
error ("invalid floating point emulation option: -mfpe=%s",
target_fpe_name);
}
- if (target_fpu_name != NULL)
- {
- /* The user specified a FPU. */
- for (i = 0; i < ARRAY_SIZE (all_fpus); i++)
- {
- if (streq (all_fpus[i].name, target_fpu_name))
- {
- arm_fpu_arch = all_fpus[i].fpu;
- arm_fpu_tune = arm_fpu_arch;
- arm_fp_model = fp_model_for_fpu[arm_fpu_arch];
- break;
- }
- }
- if (arm_fp_model == ARM_FP_MODEL_UNKNOWN)
- error ("invalid floating point option: -mfpu=%s", target_fpu_name);
- }
- else
+
+ if (target_fpu_name == NULL)
{
#ifdef FPUTYPE_DEFAULT
- /* Use the default if it is specified for this platform. */
- arm_fpu_arch = FPUTYPE_DEFAULT;
- arm_fpu_tune = FPUTYPE_DEFAULT;
+ target_fpu_name = FPUTYPE_DEFAULT;
#else
- /* Pick one based on CPU type. */
- /* ??? Some targets assume FPA is the default.
- if ((insn_flags & FL_VFP) != 0)
- arm_fpu_arch = FPUTYPE_VFP;
- else
- */
if (arm_arch_cirrus)
- arm_fpu_arch = FPUTYPE_MAVERICK;
+ target_fpu_name = "maverick";
else
- arm_fpu_arch = FPUTYPE_FPA_EMU2;
+ target_fpu_name = "fpe2";
#endif
- if (tune_flags & FL_CO_PROC && arm_fpu_arch == FPUTYPE_FPA_EMU2)
- arm_fpu_tune = FPUTYPE_FPA;
+ }
+
+ arm_fpu_desc = NULL;
+ for (i = 0; i < ARRAY_SIZE (all_fpus); i++)
+ {
+ if (streq (all_fpus[i].name, target_fpu_name))
+ {
+ arm_fpu_desc = &all_fpus[i];
+ break;
+ }
+ }
+ if (!arm_fpu_desc)
+ error ("invalid floating point option: -mfpu=%s", target_fpu_name);
+
+ switch (arm_fpu_desc->model)
+ {
+ case ARM_FP_MODEL_FPA:
+ if (arm_fpu_desc->rev == 2)
+ arm_fpu_attr = FPU_FPE2;
+ else if (arm_fpu_desc->rev == 3)
+ arm_fpu_attr = FPU_FPE3;
else
- arm_fpu_tune = arm_fpu_arch;
- arm_fp_model = fp_model_for_fpu[arm_fpu_arch];
- gcc_assert (arm_fp_model != ARM_FP_MODEL_UNKNOWN);
+ arm_fpu_attr = FPU_FPA;
+ break;
+
+ case ARM_FP_MODEL_MAVERICK:
+ arm_fpu_attr = FPU_MAVERICK;
+ break;
+
+ case ARM_FP_MODEL_VFP:
+ arm_fpu_attr = FPU_VFP;
+ break;
+
+ default:
+ gcc_unreachable();
}
if (target_float_abi_name != NULL)
arm_float_abi = TARGET_DEFAULT_FLOAT_ABI;
if (TARGET_AAPCS_BASED
- && (arm_fp_model == ARM_FP_MODEL_FPA))
+ && (arm_fpu_desc->model == ARM_FP_MODEL_FPA))
error ("FPA is unsupported in the AAPCS");
if (TARGET_AAPCS_BASED)
/* If soft-float is specified then don't use FPU. */
if (TARGET_SOFT_FLOAT)
- arm_fpu_arch = FPUTYPE_NONE;
+ arm_fpu_attr = FPU_NONE;
if (TARGET_AAPCS_BASED)
{
/* For arm2/3 there is no need to do any scheduling if there is only
a floating point emulator, or we are doing software floating-point. */
if ((TARGET_SOFT_FLOAT
- || arm_fpu_tune == FPUTYPE_FPA_EMU2
- || arm_fpu_tune == FPUTYPE_FPA_EMU3)
+ || (TARGET_FPA && arm_fpu_desc->rev))
&& (tune_flags & FL_MODE32) == 0)
flag_schedule_insns = flag_schedule_insns_after_reload = 0;
/* This variable is for the Virtual Frame Pointer, not VFP regs. */
int vfp_offset = offsets->frame;
- if (arm_fpu_arch == FPUTYPE_FPA_EMU2)
+ if (TARGET_FPA_EMU2)
{
for (reg = LAST_FPA_REGNUM; reg >= FIRST_FPA_REGNUM; reg--)
if (df_regs_ever_live_p (reg) && !call_used_regs[reg])
SP_REGNUM, HARD_FRAME_POINTER_REGNUM);
}
- if (arm_fpu_arch == FPUTYPE_FPA_EMU2)
+ if (TARGET_FPA_EMU2)
{
for (reg = FIRST_FPA_REGNUM; reg <= LAST_FPA_REGNUM; reg++)
if (df_regs_ever_live_p (reg) && !call_used_regs[reg])
/* Save any floating point call-saved registers used by this
function. */
- if (arm_fpu_arch == FPUTYPE_FPA_EMU2)
+ if (TARGET_FPA_EMU2)
{
for (reg = LAST_FPA_REGNUM; reg >= FIRST_FPA_REGNUM; reg--)
if (df_regs_ever_live_p (reg) && !call_used_regs[reg])
}
else
{
- int set_float_abi_attributes = 0;
- switch (arm_fpu_arch)
- {
- case FPUTYPE_FPA:
- fpu_name = "fpa";
- break;
- case FPUTYPE_FPA_EMU2:
- fpu_name = "fpe2";
- break;
- case FPUTYPE_FPA_EMU3:
- fpu_name = "fpe3";
- break;
- case FPUTYPE_MAVERICK:
- fpu_name = "maverick";
- break;
- case FPUTYPE_VFP:
- fpu_name = "vfp";
- set_float_abi_attributes = 1;
- break;
- case FPUTYPE_VFP3D16:
- fpu_name = "vfpv3-d16";
- set_float_abi_attributes = 1;
- break;
- case FPUTYPE_VFP3:
- fpu_name = "vfpv3";
- set_float_abi_attributes = 1;
- break;
- case FPUTYPE_NEON:
- fpu_name = "neon";
- set_float_abi_attributes = 1;
- break;
- case FPUTYPE_NEON_FP16:
- fpu_name = "neon-fp16";
- set_float_abi_attributes = 1;
- break;
- default:
- abort();
- }
- if (set_float_abi_attributes)
+ fpu_name = arm_fpu_desc->name;
+ if (arm_fpu_desc->model == ARM_FP_MODEL_VFP)
{
if (TARGET_HARD_FLOAT)
asm_fprintf (asm_out_file, "\t.eabi_attribute 27, 3\n");
#define TARGET_HARD_FLOAT (arm_float_abi != ARM_FLOAT_ABI_SOFT)
/* Use hardware floating point calling convention. */
#define TARGET_HARD_FLOAT_ABI (arm_float_abi == ARM_FLOAT_ABI_HARD)
-#define TARGET_FPA (arm_fp_model == ARM_FP_MODEL_FPA)
-#define TARGET_MAVERICK (arm_fp_model == ARM_FP_MODEL_MAVERICK)
-#define TARGET_VFP (arm_fp_model == ARM_FP_MODEL_VFP)
+#define TARGET_FPA (arm_fpu_desc->model == ARM_FP_MODEL_FPA)
+#define TARGET_MAVERICK (arm_fpu_desc->model == ARM_FP_MODEL_MAVERICK)
+#define TARGET_VFP (arm_fpu_desc->model == ARM_FP_MODEL_VFP)
#define TARGET_IWMMXT (arm_arch_iwmmxt)
#define TARGET_REALLY_IWMMXT (TARGET_IWMMXT && TARGET_32BIT)
#define TARGET_IWMMXT_ABI (TARGET_32BIT && arm_abi == ARM_ABI_IWMMXT)
#define TARGET_THUMB2 (TARGET_THUMB && arm_arch_thumb2)
/* Thumb-1 only. */
#define TARGET_THUMB1_ONLY (TARGET_THUMB1 && !arm_arch_notm)
+/* FPA emulator without LFM. */
+#define TARGET_FPA_EMU2 (TARGET_FPA && arm_fpu_desc->rev == 2)
/* The following two macros concern the ability to execute coprocessor
instructions for VFPv3 or NEON. TARGET_VFP3/TARGET_VFPD32 are currently
to be more careful with TARGET_NEON as noted below. */
/* FPU is has the full VFPv3/NEON register file of 32 D registers. */
-#define TARGET_VFPD32 (arm_fp_model == ARM_FP_MODEL_VFP \
- && (arm_fpu_arch == FPUTYPE_VFP3 \
- || arm_fpu_arch == FPUTYPE_NEON \
- || arm_fpu_arch == FPUTYPE_NEON_FP16))
+#define TARGET_VFPD32 (TARGET_VFP && arm_fpu_desc->regs == VFP_REG_D32)
/* FPU supports VFPv3 instructions. */
-#define TARGET_VFP3 (arm_fp_model == ARM_FP_MODEL_VFP \
- && (arm_fpu_arch == FPUTYPE_VFP3D16 \
- || TARGET_VFPD32))
+#define TARGET_VFP3 (TARGET_VFP && arm_fpu_desc->rev >= 3)
/* FPU supports NEON/VFP half-precision floating-point. */
-#define TARGET_NEON_FP16 (arm_fpu_arch == FPUTYPE_NEON_FP16)
+#define TARGET_NEON_FP16 \
+ (TARGET_VFP && arm_fpu_desc->neon && arm_fpu_desc->fp16)
/* FPU supports Neon instructions. The setting of this macro gets
revealed via __ARM_NEON__ so we add extra guards upon TARGET_32BIT
and TARGET_HARD_FLOAT to ensure that NEON instructions are
available. */
#define TARGET_NEON (TARGET_32BIT && TARGET_HARD_FLOAT \
- && arm_fp_model == ARM_FP_MODEL_VFP \
- && (arm_fpu_arch == FPUTYPE_NEON \
- || arm_fpu_arch == FPUTYPE_NEON_FP16))
+ && TARGET_VFP && arm_fpu_desc->neon)
/* "DSP" multiply instructions, eg. SMULxy. */
#define TARGET_DSP_MULTIPLY \
ARM_FP_MODEL_VFP
};
-extern enum arm_fp_model arm_fp_model;
-
-/* Which floating point hardware is available. Also update
- fp_model_for_fpu in arm.c when adding entries to this list. */
-enum fputype
+enum vfp_reg_type
{
- /* No FP hardware. */
- FPUTYPE_NONE,
- /* Full FPA support. */
- FPUTYPE_FPA,
- /* Emulated FPA hardware, Issue 2 emulator (no LFM/SFM). */
- FPUTYPE_FPA_EMU2,
- /* Emulated FPA hardware, Issue 3 emulator. */
- FPUTYPE_FPA_EMU3,
- /* Cirrus Maverick floating point co-processor. */
- FPUTYPE_MAVERICK,
- /* VFP. */
- FPUTYPE_VFP,
- /* VFPv3-D16. */
- FPUTYPE_VFP3D16,
- /* VFPv3. */
- FPUTYPE_VFP3,
- /* Neon. */
- FPUTYPE_NEON,
- /* Neon with half-precision float extensions. */
- FPUTYPE_NEON_FP16
+ VFP_REG_D16,
+ VFP_REG_D32,
+ VFP_REG_SINGLE
};
-/* Recast the floating point class to be the floating point attribute. */
-#define arm_fpu_attr ((enum attr_fpu) arm_fpu_tune)
-
-/* What type of floating point to tune for */
-extern enum fputype arm_fpu_tune;
-
-/* What type of floating point instructions are available */
-extern enum fputype arm_fpu_arch;
+extern const struct arm_fpu_desc
+{
+ const char *name;
+ enum arm_fp_model model;
+ int rev;
+ enum vfp_reg_type regs;
+ int neon;
+ int fp16;
+} *arm_fpu_desc;
+
+/* Which floating point hardware to schedule for. */
+extern int arm_fpu_attr;
enum float_abi_type
{
projects / platform / upstream / linaro-gcc.git / commitdiff