/* Definitions of target machine for GNU compiler, for ARM.
Copyright (C) 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
- 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+ 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
Contributed by Pieter `Tiggr' Schoenmakers (rcpieter@win.tue.nl)
and Martin Simmons (@harleqn.co.uk).
More major hacks by Richard Earnshaw (rearnsha@arm.com)
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
- the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
- MA 02111-1307, USA. */
+ the Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston,
+ MA 02110-1301, USA. */
#ifndef GCC_ARM_H
#define GCC_ARM_H
+/* The architecture define. */
+extern char arm_arch_name[];
+
/* Target CPU builtins. */
#define TARGET_CPU_CPP_BUILTINS() \
do \
/* Define __arm__ even when in thumb mode, for \
consistency with armcc. */ \
builtin_define ("__arm__"); \
+ builtin_define ("__APCS_32__"); \
if (TARGET_THUMB) \
builtin_define ("__thumb__"); \
\
builtin_define ("__THUMBEL__"); \
} \
\
- if (TARGET_APCS_32) \
- builtin_define ("__APCS_32__"); \
- else \
- builtin_define ("__APCS_26__"); \
- \
if (TARGET_SOFT_FLOAT) \
builtin_define ("__SOFTFP__"); \
\
\
/* Add a define for interworking. \
Needed when building libgcc.a. */ \
- if (TARGET_INTERWORK) \
+ if (arm_cpp_interwork) \
builtin_define ("__THUMB_INTERWORK__"); \
\
builtin_assert ("cpu=arm"); \
builtin_assert ("machine=arm"); \
+ \
+ builtin_define (arm_arch_name); \
+ if (arm_arch_cirrus) \
+ builtin_define ("__MAVERICK__"); \
+ if (arm_arch_xscale) \
+ builtin_define ("__XSCALE__"); \
+ if (arm_arch_iwmmxt) \
+ builtin_define ("__IWMMXT__"); \
+ if (TARGET_AAPCS_BASED) \
+ builtin_define ("__ARM_EABI__"); \
} while (0)
-#define TARGET_CPU_arm2 0x0000
-#define TARGET_CPU_arm250 0x0000
-#define TARGET_CPU_arm3 0x0000
-#define TARGET_CPU_arm6 0x0001
-#define TARGET_CPU_arm600 0x0001
-#define TARGET_CPU_arm610 0x0002
-#define TARGET_CPU_arm7 0x0001
-#define TARGET_CPU_arm7m 0x0004
-#define TARGET_CPU_arm7dm 0x0004
-#define TARGET_CPU_arm7dmi 0x0004
-#define TARGET_CPU_arm700 0x0001
-#define TARGET_CPU_arm710 0x0002
-#define TARGET_CPU_arm7100 0x0002
-#define TARGET_CPU_arm7500 0x0002
-#define TARGET_CPU_arm7500fe 0x1001
-#define TARGET_CPU_arm7tdmi 0x0008
-#define TARGET_CPU_arm8 0x0010
-#define TARGET_CPU_arm810 0x0020
-#define TARGET_CPU_strongarm 0x0040
-#define TARGET_CPU_strongarm110 0x0040
-#define TARGET_CPU_strongarm1100 0x0040
-#define TARGET_CPU_arm9 0x0080
-#define TARGET_CPU_arm9tdmi 0x0080
-#define TARGET_CPU_xscale 0x0100
-#define TARGET_CPU_ep9312 0x0200
-#define TARGET_CPU_iwmmxt 0x0400
-#define TARGET_CPU_arm926ejs 0x0800
-#define TARGET_CPU_arm1026ejs 0x1000
-#define TARGET_CPU_arm1136js 0x2000
-#define TARGET_CPU_arm1136jfs 0x4000
-/* Configure didn't specify. */
-#define TARGET_CPU_generic 0x8000
-
/* The various ARM cores. */
enum processor_type
{
-#define ARM_CORE(NAME, FLAGS, COSTS) \
- NAME,
+#define ARM_CORE(NAME, IDENT, ARCH, FLAGS, COSTS) \
+ IDENT,
#include "arm-cores.def"
#undef ARM_CORE
/* Used to indicate that no processor has been specified. */
arm_none
};
+enum target_cpus
+{
+#define ARM_CORE(NAME, IDENT, ARCH, FLAGS, COSTS) \
+ TARGET_CPU_##IDENT,
+#include "arm-cores.def"
+#undef ARM_CORE
+ TARGET_CPU_generic
+};
+
/* The processor for which instructions should be scheduled. */
extern enum processor_type arm_tune;
extern int arm_target_label;
extern int arm_ccfsm_state;
extern GTY(()) rtx arm_target_insn;
-/* Run-time compilation parameters selecting different hardware subsets. */
-extern int target_flags;
-/* The floating point mode. */
-extern const char *target_fpu_name;
-/* For backwards compatibility. */
-extern const char *target_fpe_name;
-/* Whether to use floating point hardware. */
-extern const char *target_float_abi_name;
/* Define the information needed to generate branch insns. This is
stored from the compare operation. */
extern GTY(()) rtx arm_compare_op0;
#define TARGET_CPU_DEFAULT TARGET_CPU_generic
#endif
-/* If the configuration file doesn't specify the cpu, the subtarget may
- override it. If it doesn't, then default to an ARM6. */
-#if TARGET_CPU_DEFAULT == TARGET_CPU_generic
-#undef TARGET_CPU_DEFAULT
-
-#ifdef SUBTARGET_CPU_DEFAULT
-#define TARGET_CPU_DEFAULT SUBTARGET_CPU_DEFAULT
-#else
-#define TARGET_CPU_DEFAULT TARGET_CPU_arm6
-#endif
-#endif
-
-#if TARGET_CPU_DEFAULT == TARGET_CPU_arm2
-#define CPP_ARCH_DEFAULT_SPEC "-D__ARM_ARCH_2__"
-#else
-#if TARGET_CPU_DEFAULT == TARGET_CPU_arm6 || TARGET_CPU_DEFAULT == TARGET_CPU_arm610 || TARGET_CPU_DEFAULT == TARGET_CPU_arm7500fe
-#define CPP_ARCH_DEFAULT_SPEC "-D__ARM_ARCH_3__"
-#else
-#if TARGET_CPU_DEFAULT == TARGET_CPU_arm7m
-#define CPP_ARCH_DEFAULT_SPEC "-D__ARM_ARCH_3M__"
-#else
-#if TARGET_CPU_DEFAULT == TARGET_CPU_arm7tdmi || TARGET_CPU_DEFAULT == TARGET_CPU_arm9 || TARGET_CPU_DEFAULT == TARGET_CPU_arm9tdmi
-#define CPP_ARCH_DEFAULT_SPEC "-D__ARM_ARCH_4T__"
-#else
-#if TARGET_CPU_DEFAULT == TARGET_CPU_arm8 || TARGET_CPU_DEFAULT == TARGET_CPU_arm810 || TARGET_CPU_DEFAULT == TARGET_CPU_strongarm || TARGET_CPU_DEFAULT == TARGET_CPU_strongarm110 || TARGET_CPU_DEFAULT == TARGET_CPU_strongarm1100
-#define CPP_ARCH_DEFAULT_SPEC "-D__ARM_ARCH_4__"
-#else
-#if TARGET_CPU_DEFAULT == TARGET_CPU_xscale
-#define CPP_ARCH_DEFAULT_SPEC "-D__ARM_ARCH_5TE__ -D__XSCALE__"
-#else
-#if TARGET_CPU_DEFAULT == TARGET_CPU_ep9312
-#define CPP_ARCH_DEFAULT_SPEC "-D__ARM_ARCH_4T__ -D__MAVERICK__"
-/* Set TARGET_DEFAULT to the default, but without soft-float. */
-#ifdef TARGET_DEFAULT
-#undef TARGET_DEFAULT
-#define TARGET_DEFAULT (ARM_FLAG_APCS_32 | ARM_FLAG_APCS_FRAME)
-#endif
-#else
-#if TARGET_CPU_DEFAULT == TARGET_CPU_iwmmxt
-#define CPP_ARCH_DEFAULT_SPEC "-D__ARM_ARCH_5TE__ -D__XSCALE__ -D__IWMMXT__"
-#else
-#if (TARGET_CPU_DEFAULT == TARGET_CPU_arm926ejs || \
- TARGET_CPU_DEFAULT == TARGET_CPU_arm1026ejs)
-#define CPP_ARCH_DEFAULT_SPEC "-D__ARM_ARCH_5TEJ__"
-#else
-#if (TARGET_CPU_DEFAULT == TARGET_CPU_arm1136js || \
- TARGET_CPU_DEFAULT == TARGET_CPU_arm1136jfs)
-#define CPP_ARCH_DEFAULT_SPEC "-D__ARM_ARCH_6J__"
-#else
-#error Unrecognized value in TARGET_CPU_DEFAULT.
-#endif
-#endif
-#endif
-#endif
-#endif
-#endif
-#endif
-#endif
-#endif
-#endif
#undef CPP_SPEC
-#define CPP_SPEC "%(cpp_cpu_arch) %(subtarget_cpp_spec) \
-%{mapcs-32:%{mapcs-26: \
- %e-mapcs-26 and -mapcs-32 may not be used together}} \
+#define CPP_SPEC "%(subtarget_cpp_spec) \
%{msoft-float:%{mhard-float: \
%e-msoft-float and -mhard_float may not be used together}} \
%{mbig-endian:%{mlittle-endian: \
%e-mbig-endian and -mlittle-endian may not be used together}}"
-/* Set the architecture define -- if -march= is set, then it overrides
- the -mcpu= setting. */
-#define CPP_CPU_ARCH_SPEC "\
-%{march=arm2:-D__ARM_ARCH_2__} \
-%{march=arm250:-D__ARM_ARCH_2__} \
-%{march=arm3:-D__ARM_ARCH_2__} \
-%{march=arm6:-D__ARM_ARCH_3__} \
-%{march=arm600:-D__ARM_ARCH_3__} \
-%{march=arm610:-D__ARM_ARCH_3__} \
-%{march=arm7:-D__ARM_ARCH_3__} \
-%{march=arm700:-D__ARM_ARCH_3__} \
-%{march=arm710:-D__ARM_ARCH_3__} \
-%{march=arm720:-D__ARM_ARCH_3__} \
-%{march=arm7100:-D__ARM_ARCH_3__} \
-%{march=arm7500:-D__ARM_ARCH_3__} \
-%{march=arm7500fe:-D__ARM_ARCH_3__} \
-%{march=arm7m:-D__ARM_ARCH_3M__} \
-%{march=arm7dm:-D__ARM_ARCH_3M__} \
-%{march=arm7dmi:-D__ARM_ARCH_3M__} \
-%{march=arm7tdmi:-D__ARM_ARCH_4T__} \
-%{march=arm8:-D__ARM_ARCH_4__} \
-%{march=arm810:-D__ARM_ARCH_4__} \
-%{march=arm9:-D__ARM_ARCH_4T__} \
-%{march=arm920:-D__ARM_ARCH_4__} \
-%{march=arm920t:-D__ARM_ARCH_4T__} \
-%{march=arm926ejs:-D__ARM_ARCH_5TEJ__} \
-%{march=arm9tdmi:-D__ARM_ARCH_4T__} \
-%{march=arm1026ejs:-D__ARM_ARCH_5TEJ__} \
-%{march=arm1136js:-D__ARM_ARCH_6J__} \
-%{march=arm1136jfs:-D__ARM_ARCH_6J__} \
-%{march=strongarm:-D__ARM_ARCH_4__} \
-%{march=strongarm110:-D__ARM_ARCH_4__} \
-%{march=strongarm1100:-D__ARM_ARCH_4__} \
-%{march=xscale:-D__ARM_ARCH_5TE__} \
-%{march=xscale:-D__XSCALE__} \
-%{march=ep9312:-D__ARM_ARCH_4T__} \
-%{march=ep9312:-D__MAVERICK__} \
-%{march=armv2:-D__ARM_ARCH_2__} \
-%{march=armv2a:-D__ARM_ARCH_2__} \
-%{march=armv3:-D__ARM_ARCH_3__} \
-%{march=armv3m:-D__ARM_ARCH_3M__} \
-%{march=armv4:-D__ARM_ARCH_4__} \
-%{march=armv4t:-D__ARM_ARCH_4T__} \
-%{march=armv5:-D__ARM_ARCH_5__} \
-%{march=armv5t:-D__ARM_ARCH_5T__} \
-%{march=armv5e:-D__ARM_ARCH_5E__} \
-%{march=armv5te:-D__ARM_ARCH_5TE__} \
-%{march=armv6:-D__ARM_ARCH6__} \
-%{march=armv6j:-D__ARM_ARCH6J__} \
-%{!march=*: \
- %{mcpu=arm2:-D__ARM_ARCH_2__} \
- %{mcpu=arm250:-D__ARM_ARCH_2__} \
- %{mcpu=arm3:-D__ARM_ARCH_2__} \
- %{mcpu=arm6:-D__ARM_ARCH_3__} \
- %{mcpu=arm600:-D__ARM_ARCH_3__} \
- %{mcpu=arm610:-D__ARM_ARCH_3__} \
- %{mcpu=arm7:-D__ARM_ARCH_3__} \
- %{mcpu=arm700:-D__ARM_ARCH_3__} \
- %{mcpu=arm710:-D__ARM_ARCH_3__} \
- %{mcpu=arm720:-D__ARM_ARCH_3__} \
- %{mcpu=arm7100:-D__ARM_ARCH_3__} \
- %{mcpu=arm7500:-D__ARM_ARCH_3__} \
- %{mcpu=arm7500fe:-D__ARM_ARCH_3__} \
- %{mcpu=arm7m:-D__ARM_ARCH_3M__} \
- %{mcpu=arm7dm:-D__ARM_ARCH_3M__} \
- %{mcpu=arm7dmi:-D__ARM_ARCH_3M__} \
- %{mcpu=arm7tdmi:-D__ARM_ARCH_4T__} \
- %{mcpu=arm8:-D__ARM_ARCH_4__} \
- %{mcpu=arm810:-D__ARM_ARCH_4__} \
- %{mcpu=arm9:-D__ARM_ARCH_4T__} \
- %{mcpu=arm920:-D__ARM_ARCH_4__} \
- %{mcpu=arm920t:-D__ARM_ARCH_4T__} \
- %{mcpu=arm926ejs:-D__ARM_ARCH_5TEJ__} \
- %{mcpu=arm9tdmi:-D__ARM_ARCH_4T__} \
- %{mcpu=arm1026ejs:-D__ARM_ARCH_5TEJ__} \
- %{mcpu=arm1136js:-D__ARM_ARCH_6J__} \
- %{mcpu=arm1136jfs:-D__ARM_ARCH_6J__} \
- %{mcpu=strongarm:-D__ARM_ARCH_4__} \
- %{mcpu=strongarm110:-D__ARM_ARCH_4__} \
- %{mcpu=strongarm1100:-D__ARM_ARCH_4__} \
- %{mcpu=xscale:-D__ARM_ARCH_5TE__} \
- %{mcpu=xscale:-D__XSCALE__} \
- %{mcpu=ep9312:-D__ARM_ARCH_4T__} \
- %{mcpu=ep9312:-D__MAVERICK__} \
- %{mcpu=iwmmxt:-D__ARM_ARCH_5TE__} \
- %{mcpu=iwmmxt:-D__XSCALE__} \
- %{mcpu=iwmmxt:-D__IWMMXT__} \
- %{!mcpu*:%(cpp_cpu_arch_default)}} \
-"
-
#ifndef CC1_SPEC
#define CC1_SPEC ""
#endif
Do not define this macro if it does not need to do anything. */
#define EXTRA_SPECS \
- { "cpp_cpu_arch", CPP_CPU_ARCH_SPEC }, \
- { "cpp_cpu_arch_default", CPP_ARCH_DEFAULT_SPEC }, \
{ "subtarget_cpp_spec", SUBTARGET_CPP_SPEC }, \
SUBTARGET_EXTRA_SPECS
#define TARGET_VERSION fputs (" (ARM/generic)", stderr);
#endif
-/* Nonzero if the function prologue (and epilogue) should obey
- the ARM Procedure Call Standard. */
-#define ARM_FLAG_APCS_FRAME (1 << 0)
-
-/* Nonzero if the function prologue should output the function name to enable
- the post mortem debugger to print a backtrace (very useful on RISCOS,
- unused on RISCiX). Specifying this flag also enables
- -fno-omit-frame-pointer.
- XXX Must still be implemented in the prologue. */
-#define ARM_FLAG_POKE (1 << 1)
-
-/* Nonzero if floating point instructions are emulated by the FPE, in which
- case instruction scheduling becomes very uninteresting. */
-#define ARM_FLAG_FPE (1 << 2)
-
-/* Nonzero if destined for a processor in 32-bit program mode. Takes out bit
- that assume restoration of the condition flags when returning from a
- branch and link (ie a function). */
-#define ARM_FLAG_APCS_32 (1 << 3)
-
-/* FLAGS 0x0008 and 0x0010 are now spare (used to be arm3/6 selection). */
-
-/* Nonzero if stack checking should be performed on entry to each function
- which allocates temporary variables on the stack. */
-#define ARM_FLAG_APCS_STACK (1 << 4)
-
-/* Nonzero if floating point parameters should be passed to functions in
- floating point registers. */
-#define ARM_FLAG_APCS_FLOAT (1 << 5)
-
-/* Nonzero if re-entrant, position independent code should be generated.
- This is equivalent to -fpic. */
-#define ARM_FLAG_APCS_REENT (1 << 6)
-
-/* Nonzero if the MMU will trap unaligned word accesses, so shorts must
- be loaded using either LDRH or LDRB instructions. */
-#define ARM_FLAG_MMU_TRAPS (1 << 7)
-
-/* Nonzero if all floating point instructions are missing (and there is no
- emulator either). Generate function calls for all ops in this case. */
-#define ARM_FLAG_SOFT_FLOAT (1 << 8)
-
-/* Nonzero if we should compile with BYTES_BIG_ENDIAN set to 1. */
-#define ARM_FLAG_BIG_END (1 << 9)
-
-/* Nonzero if we should compile for Thumb interworking. */
-#define ARM_FLAG_INTERWORK (1 << 10)
-
-/* Nonzero if we should have little-endian words even when compiling for
- big-endian (for backwards compatibility with older versions of GCC). */
-#define ARM_FLAG_LITTLE_WORDS (1 << 11)
-
-/* Nonzero if we need to protect the prolog from scheduling */
-#define ARM_FLAG_NO_SCHED_PRO (1 << 12)
-
-/* Nonzero if a call to abort should be generated if a noreturn
- function tries to return. */
-#define ARM_FLAG_ABORT_NORETURN (1 << 13)
-
-/* Nonzero if function prologues should not load the PIC register. */
-#define ARM_FLAG_SINGLE_PIC_BASE (1 << 14)
-
-/* Nonzero if all call instructions should be indirect. */
-#define ARM_FLAG_LONG_CALLS (1 << 15)
-
-/* Nonzero means that the target ISA is the THUMB, not the ARM. */
-#define ARM_FLAG_THUMB (1 << 16)
-
-/* Set if a TPCS style stack frame should be generated, for non-leaf
- functions, even if they do not need one. */
-#define THUMB_FLAG_BACKTRACE (1 << 17)
-
-/* Set if a TPCS style stack frame should be generated, for leaf
- functions, even if they do not need one. */
-#define THUMB_FLAG_LEAF_BACKTRACE (1 << 18)
-
-/* Set if externally visible functions should assume that they
- might be called in ARM mode, from a non-thumb aware code. */
-#define THUMB_FLAG_CALLEE_SUPER_INTERWORKING (1 << 19)
-
-/* Set if calls via function pointers should assume that their
- destination is non-Thumb aware. */
-#define THUMB_FLAG_CALLER_SUPER_INTERWORKING (1 << 20)
-
-/* Nonzero means to use ARM/Thumb Procedure Call Standard conventions. */
-#define ARM_FLAG_ATPCS (1 << 21)
-
-/* Fix invalid Cirrus instruction combinations by inserting NOPs. */
-#define CIRRUS_FIX_INVALID_INSNS (1 << 22)
-
-#define TARGET_APCS_FRAME (target_flags & ARM_FLAG_APCS_FRAME)
-#define TARGET_POKE_FUNCTION_NAME (target_flags & ARM_FLAG_POKE)
-#define TARGET_FPE (target_flags & ARM_FLAG_FPE)
-#define TARGET_APCS_32 (target_flags & ARM_FLAG_APCS_32)
-#define TARGET_APCS_STACK (target_flags & ARM_FLAG_APCS_STACK)
-#define TARGET_APCS_FLOAT (target_flags & ARM_FLAG_APCS_FLOAT)
-#define TARGET_APCS_REENT (target_flags & ARM_FLAG_APCS_REENT)
-#define TARGET_ATPCS (target_flags & ARM_FLAG_ATPCS)
-#define TARGET_MMU_TRAPS (target_flags & ARM_FLAG_MMU_TRAPS)
#define TARGET_SOFT_FLOAT (arm_float_abi == ARM_FLOAT_ABI_SOFT)
-#define TARGET_SOFT_FLOAT_ABI (arm_float_abi != ARM_FLOAT_ABI_HARD)
-#define TARGET_HARD_FLOAT (arm_float_abi == ARM_FLOAT_ABI_HARD)
+/* Use hardware floating point instructions. */
+#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_IWMMXT (arm_arch_iwmmxt)
#define TARGET_REALLY_IWMMXT (TARGET_IWMMXT && TARGET_ARM)
-#define TARGET_BIG_END (target_flags & ARM_FLAG_BIG_END)
-#define TARGET_INTERWORK (target_flags & ARM_FLAG_INTERWORK)
-#define TARGET_LITTLE_WORDS (target_flags & ARM_FLAG_LITTLE_WORDS)
-#define TARGET_NO_SCHED_PRO (target_flags & ARM_FLAG_NO_SCHED_PRO)
-#define TARGET_ABORT_NORETURN (target_flags & ARM_FLAG_ABORT_NORETURN)
-#define TARGET_SINGLE_PIC_BASE (target_flags & ARM_FLAG_SINGLE_PIC_BASE)
-#define TARGET_LONG_CALLS (target_flags & ARM_FLAG_LONG_CALLS)
-#define TARGET_THUMB (target_flags & ARM_FLAG_THUMB)
+#define TARGET_IWMMXT_ABI (TARGET_ARM && arm_abi == ARM_ABI_IWMMXT)
#define TARGET_ARM (! TARGET_THUMB)
#define TARGET_EITHER 1 /* (TARGET_ARM | TARGET_THUMB) */
-#define TARGET_CALLEE_INTERWORKING (target_flags & THUMB_FLAG_CALLEE_SUPER_INTERWORKING)
-#define TARGET_CALLER_INTERWORKING (target_flags & THUMB_FLAG_CALLER_SUPER_INTERWORKING)
-#define TARGET_BACKTRACE (leaf_function_p () \
- ? (target_flags & THUMB_FLAG_LEAF_BACKTRACE) \
- : (target_flags & THUMB_FLAG_BACKTRACE))
-#define TARGET_CIRRUS_FIX_INVALID_INSNS (target_flags & CIRRUS_FIX_INVALID_INSNS)
-
-/* SUBTARGET_SWITCHES is used to add flags on a per-config basis. */
-#ifndef SUBTARGET_SWITCHES
-#define SUBTARGET_SWITCHES
+#define TARGET_BACKTRACE (leaf_function_p () \
+ ? TARGET_TPCS_LEAF_FRAME \
+ : TARGET_TPCS_FRAME)
+#define TARGET_LDRD (arm_arch5e && ARM_DOUBLEWORD_ALIGN)
+#define TARGET_AAPCS_BASED \
+ (arm_abi != ARM_ABI_APCS && arm_abi != ARM_ABI_ATPCS)
+
+/* True iff the full BPABI is being used. If TARGET_BPABI is true,
+ then TARGET_AAPCS_BASED must be true -- but the converse does not
+ hold. TARGET_BPABI implies the use of the BPABI runtime library,
+ etc., in addition to just the AAPCS calling conventions. */
+#ifndef TARGET_BPABI
+#define TARGET_BPABI false
#endif
-#define TARGET_SWITCHES \
-{ \
- {"apcs", ARM_FLAG_APCS_FRAME, "" }, \
- {"apcs-frame", ARM_FLAG_APCS_FRAME, \
- N_("Generate APCS conformant stack frames") }, \
- {"no-apcs-frame", -ARM_FLAG_APCS_FRAME, "" }, \
- {"poke-function-name", ARM_FLAG_POKE, \
- N_("Store function names in object code") }, \
- {"no-poke-function-name", -ARM_FLAG_POKE, "" }, \
- {"fpe", ARM_FLAG_FPE, "" }, \
- {"apcs-32", ARM_FLAG_APCS_32, \
- N_("Use the 32-bit version of the APCS") }, \
- {"apcs-26", -ARM_FLAG_APCS_32, \
- N_("Use the 26-bit version of the APCS") }, \
- {"apcs-stack-check", ARM_FLAG_APCS_STACK, "" }, \
- {"no-apcs-stack-check", -ARM_FLAG_APCS_STACK, "" }, \
- {"apcs-float", ARM_FLAG_APCS_FLOAT, \
- N_("Pass FP arguments in FP registers") }, \
- {"no-apcs-float", -ARM_FLAG_APCS_FLOAT, "" }, \
- {"apcs-reentrant", ARM_FLAG_APCS_REENT, \
- N_("Generate re-entrant, PIC code") }, \
- {"no-apcs-reentrant", -ARM_FLAG_APCS_REENT, "" }, \
- {"alignment-traps", ARM_FLAG_MMU_TRAPS, \
- N_("The MMU will trap on unaligned accesses") }, \
- {"no-alignment-traps", -ARM_FLAG_MMU_TRAPS, "" }, \
- {"short-load-bytes", ARM_FLAG_MMU_TRAPS, "" }, \
- {"no-short-load-bytes", -ARM_FLAG_MMU_TRAPS, "" }, \
- {"short-load-words", -ARM_FLAG_MMU_TRAPS, "" }, \
- {"no-short-load-words", ARM_FLAG_MMU_TRAPS, "" }, \
- {"soft-float", ARM_FLAG_SOFT_FLOAT, \
- N_("Use library calls to perform FP operations") }, \
- {"hard-float", -ARM_FLAG_SOFT_FLOAT, \
- N_("Use hardware floating point instructions") }, \
- {"big-endian", ARM_FLAG_BIG_END, \
- N_("Assume target CPU is configured as big endian") }, \
- {"little-endian", -ARM_FLAG_BIG_END, \
- N_("Assume target CPU is configured as little endian") }, \
- {"words-little-endian", ARM_FLAG_LITTLE_WORDS, \
- N_("Assume big endian bytes, little endian words") }, \
- {"thumb-interwork", ARM_FLAG_INTERWORK, \
- N_("Support calls between Thumb and ARM instruction sets") }, \
- {"no-thumb-interwork", -ARM_FLAG_INTERWORK, "" }, \
- {"abort-on-noreturn", ARM_FLAG_ABORT_NORETURN, \
- N_("Generate a call to abort if a noreturn function returns")}, \
- {"no-abort-on-noreturn", -ARM_FLAG_ABORT_NORETURN, "" }, \
- {"no-sched-prolog", ARM_FLAG_NO_SCHED_PRO, \
- N_("Do not move instructions into a function's prologue") }, \
- {"sched-prolog", -ARM_FLAG_NO_SCHED_PRO, "" }, \
- {"single-pic-base", ARM_FLAG_SINGLE_PIC_BASE, \
- N_("Do not load the PIC register in function prologues") }, \
- {"no-single-pic-base", -ARM_FLAG_SINGLE_PIC_BASE, "" }, \
- {"long-calls", ARM_FLAG_LONG_CALLS, \
- N_("Generate call insns as indirect calls, if necessary") }, \
- {"no-long-calls", -ARM_FLAG_LONG_CALLS, "" }, \
- {"thumb", ARM_FLAG_THUMB, \
- N_("Compile for the Thumb not the ARM") }, \
- {"no-thumb", -ARM_FLAG_THUMB, "" }, \
- {"arm", -ARM_FLAG_THUMB, "" }, \
- {"tpcs-frame", THUMB_FLAG_BACKTRACE, \
- N_("Thumb: Generate (non-leaf) stack frames even if not needed") }, \
- {"no-tpcs-frame", -THUMB_FLAG_BACKTRACE, "" }, \
- {"tpcs-leaf-frame", THUMB_FLAG_LEAF_BACKTRACE, \
- N_("Thumb: Generate (leaf) stack frames even if not needed") }, \
- {"no-tpcs-leaf-frame", -THUMB_FLAG_LEAF_BACKTRACE, "" }, \
- {"callee-super-interworking", THUMB_FLAG_CALLEE_SUPER_INTERWORKING, \
- N_("Thumb: Assume non-static functions may be called from ARM code") }, \
- {"no-callee-super-interworking", -THUMB_FLAG_CALLEE_SUPER_INTERWORKING, \
- "" }, \
- {"caller-super-interworking", THUMB_FLAG_CALLER_SUPER_INTERWORKING, \
- N_("Thumb: Assume function pointers may go to non-Thumb aware code") }, \
- {"no-caller-super-interworking", -THUMB_FLAG_CALLER_SUPER_INTERWORKING, \
- "" }, \
- {"cirrus-fix-invalid-insns", CIRRUS_FIX_INVALID_INSNS, \
- N_("Cirrus: Place NOPs to avoid invalid instruction combinations") }, \
- {"no-cirrus-fix-invalid-insns", -CIRRUS_FIX_INVALID_INSNS, \
- N_("Cirrus: Do not break up invalid instruction combinations with NOPs") },\
- SUBTARGET_SWITCHES \
- {"", TARGET_DEFAULT, "" } \
-}
-
-#define TARGET_OPTIONS \
-{ \
- {"cpu=", & arm_select[0].string, \
- N_("Specify the name of the target CPU"), 0}, \
- {"arch=", & arm_select[1].string, \
- N_("Specify the name of the target architecture"), 0}, \
- {"tune=", & arm_select[2].string, "", 0}, \
- {"fpe=", & target_fpe_name, "", 0}, \
- {"fp=", & target_fpe_name, "", 0}, \
- {"fpu=", & target_fpu_name, \
- N_("Specify the name of the target floating point hardware/format"), 0}, \
- {"float-abi=", & target_float_abi_name, \
- N_("Specify if floating point hardware should be used"), 0}, \
- {"structure-size-boundary=", & structure_size_string, \
- N_("Specify the minimum bit alignment of structures"), 0}, \
- {"pic-register=", & arm_pic_register_string, \
- N_("Specify the register to be used for PIC addressing"), 0} \
-}
-
/* Support for a compile-time default CPU, et cetera. The rules are:
--with-arch is ignored if -march or -mcpu are specified.
--with-cpu is ignored if -march or -mcpu are specified, and is overridden
by -march).
--with-float is ignored if -mhard-float, -msoft-float or -mfloat-abi are
specified.
- --with-fpu is ignored if -mfpu is specified. */
+ --with-fpu is ignored if -mfpu is specified.
+ --with-abi is ignored is -mabi is specified. */
#define OPTION_DEFAULT_SPECS \
{"arch", "%{!march=*:%{!mcpu=*:-march=%(VALUE)}}" }, \
{"cpu", "%{!march=*:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \
{"tune", "%{!mcpu=*:%{!mtune=*:-mtune=%(VALUE)}}" }, \
{"float", \
"%{!msoft-float:%{!mhard-float:%{!mfloat-abi=*:-mfloat-abi=%(VALUE)}}}" }, \
- {"fpu", "%{!mfpu=*:-mfpu=%(VALUE)}"},
-
-struct arm_cpu_select
-{
- const char * string;
- const char * name;
- const struct processors * processors;
-};
-
-/* This is a magic array. If the user specifies a command line switch
- which matches one of the entries in TARGET_OPTIONS then the corresponding
- string pointer will be set to the value specified by the user. */
-extern struct arm_cpu_select arm_select[];
-
-enum prog_mode_type
-{
- prog_mode26,
- prog_mode32
-};
-
-/* Recast the program mode class to be the prog_mode attribute. */
-#define arm_prog_mode ((enum attr_prog_mode) arm_prgmode)
-
-extern enum prog_mode_type arm_prgmode;
+ {"fpu", "%{!mfpu=*:-mfpu=%(VALUE)}"}, \
+ {"abi", "%{!mabi=*:-mabi=%(VALUE)}"},
/* Which floating point model to use. */
enum arm_fp_model
extern enum float_abi_type arm_float_abi;
-/* Default floating point architecture. Override in sub-target if
- necessary.
- FIXME: Is this still necessary/desirable? Do we want VFP chips to
- default to VFP unless overridden by a subtarget? If so it would be best
- to remove these definitions. It also assumes there is only one cpu model
- with a Maverick fpu. */
-#ifndef FPUTYPE_DEFAULT
-#define FPUTYPE_DEFAULT FPUTYPE_FPA_EMU2
+#ifndef TARGET_DEFAULT_FLOAT_ABI
+#define TARGET_DEFAULT_FLOAT_ABI ARM_FLOAT_ABI_SOFT
#endif
-#if TARGET_CPU_DEFAULT == TARGET_CPU_ep9312
-#undef FPUTYPE_DEFAULT
-#define FPUTYPE_DEFAULT FPUTYPE_MAVERICK
+/* Which ABI to use. */
+enum arm_abi_type
+{
+ ARM_ABI_APCS,
+ ARM_ABI_ATPCS,
+ ARM_ABI_AAPCS,
+ ARM_ABI_IWMMXT
+};
+
+extern enum arm_abi_type arm_abi;
+
+#ifndef ARM_DEFAULT_ABI
+#define ARM_DEFAULT_ABI ARM_ABI_APCS
#endif
/* Nonzero if this chip supports the ARM Architecture 3M extensions. */
/* Nonzero if this chip supports the ARM Architecture 4 extensions. */
extern int arm_arch4;
+/* Nonzero if this chip supports the ARM Architecture 4T extensions. */
+extern int arm_arch4t;
+
/* Nonzero if this chip supports the ARM Architecture 5 extensions. */
extern int arm_arch5;
extern int thumb_code;
/* Nonzero if this chip is a StrongARM. */
-extern int arm_is_strong;
+extern int arm_tune_strongarm;
/* Nonzero if this chip is a Cirrus variant. */
-extern int arm_is_cirrus;
+extern int arm_arch_cirrus;
/* Nonzero if this chip supports Intel XScale with Wireless MMX technology. */
extern int arm_arch_iwmmxt;
/* Nonzero if this chip is an XScale. */
extern int arm_arch_xscale;
-/* Nonzero if tuning for XScale */
+/* Nonzero if tuning for XScale. */
extern int arm_tune_xscale;
-/* Nonzero if this chip is an ARM6 or an ARM7. */
-extern int arm_is_6_or_7;
+/* Nonzero if tuning for stores via the write buffer. */
+extern int arm_tune_wbuf;
+
+/* Nonzero if we should define __THUMB_INTERWORK__ in the
+ preprocessor.
+ XXX This is a bit of a hack, it's intended to help work around
+ problems in GLD which doesn't understand that armv5t code is
+ interworking clean. */
+extern int arm_cpp_interwork;
#ifndef TARGET_DEFAULT
-#define TARGET_DEFAULT (ARM_FLAG_APCS_FRAME)
+#define TARGET_DEFAULT (MASK_APCS_FRAME)
#endif
/* The frame pointer register used in gcc has nothing to do with debugging;
that is controlled by the APCS-FRAME option. */
#define CAN_DEBUG_WITHOUT_FP
-#undef TARGET_MEM_FUNCTIONS
-#define TARGET_MEM_FUNCTIONS 1
-
#define OVERRIDE_OPTIONS arm_override_options ()
/* Nonzero if PIC code requires explicit qualifiers to generate
/* Nonzero if we need to refer to the GOT with a PC-relative
offset. In other words, generate
- .word _GLOBAL_OFFSET_TABLE_ - [. - (.Lxx + 8)]
+ .word _GLOBAL_OFFSET_TABLE_ - [. - (.Lxx + 8)]
rather than
.word _GLOBAL_OFFSET_TABLE_ - (.Lxx + 8)
- The default is true, which matches NetBSD. Subtargets can
+ The default is true, which matches NetBSD. Subtargets can
override this if required. */
#ifndef GOT_PCREL
#define GOT_PCREL 1
if (MODE == QImode) \
UNSIGNEDP = 1; \
else if (MODE == HImode) \
- UNSIGNEDP = TARGET_MMU_TRAPS != 0; \
+ UNSIGNEDP = 1; \
(MODE) = SImode; \
}
+#define PROMOTE_FUNCTION_MODE(MODE, UNSIGNEDP, TYPE) \
+ if ((GET_MODE_CLASS (MODE) == MODE_INT \
+ || GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT) \
+ && GET_MODE_SIZE (MODE) < 4) \
+ (MODE) = SImode; \
+
/* Define this if most significant bit is lowest numbered
in instructions that operate on numbered bit-fields. */
#define BITS_BIG_ENDIAN 0
-/* Define this if most significant byte of a word is the lowest numbered.
+/* Define this if most significant byte of a word is the lowest numbered.
Most ARM processors are run in little endian mode, so that is the default.
If you want to have it run-time selectable, change the definition in a
cover file to be TARGET_BIG_ENDIAN. */
#define UNITS_PER_WORD 4
-#define PARM_BOUNDARY 32
+/* True if natural alignment is used for doubleword types. */
+#define ARM_DOUBLEWORD_ALIGN TARGET_AAPCS_BASED
+
+#define DOUBLEWORD_ALIGNMENT 64
-#define IWMMXT_ALIGNMENT 64
+#define PARM_BOUNDARY 32
-#define STACK_BOUNDARY 32
+#define STACK_BOUNDARY (ARM_DOUBLEWORD_ALIGN ? DOUBLEWORD_ALIGNMENT : 32)
-#define PREFERRED_STACK_BOUNDARY (TARGET_ATPCS ? 64 : 32)
+#define PREFERRED_STACK_BOUNDARY \
+ (arm_abi == ARM_ABI_ATPCS ? 64 : STACK_BOUNDARY)
#define FUNCTION_BOUNDARY 32
#define EMPTY_FIELD_BOUNDARY 32
-#define BIGGEST_ALIGNMENT (TARGET_REALLY_IWMMXT ? 64 : 32)
-
-#define TYPE_NEEDS_IWMMXT_ALIGNMENT(TYPE) \
- (TARGET_REALLY_IWMMXT \
- && ((TREE_CODE (TYPE) == VECTOR_TYPE) || (TYPE_MODE (TYPE) == DImode) || (TYPE_MODE (TYPE) == DFmode)))
+#define BIGGEST_ALIGNMENT (ARM_DOUBLEWORD_ALIGN ? DOUBLEWORD_ALIGNMENT : 32)
/* XXX Blah -- this macro is used directly by libobjc. Since it
supports no vector modes, cut out the complexity and fall back
on BIGGEST_FIELD_ALIGNMENT. */
#ifdef IN_TARGET_LIBS
#define BIGGEST_FIELD_ALIGNMENT 64
-#else
-/* An expression for the alignment of a structure field FIELD if the
- alignment computed in the usual way is COMPUTED. GCC uses this
- value instead of the value in `BIGGEST_ALIGNMENT' or
- `BIGGEST_FIELD_ALIGNMENT', if defined, for structure fields only. */
-#define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \
- (TYPE_NEEDS_IWMMXT_ALIGNMENT (TREE_TYPE (FIELD)) \
- ? IWMMXT_ALIGNMENT \
- : (COMPUTED))
#endif
-/* If defined, a C expression to compute the alignment for a static variable.
- TYPE is the data type, and ALIGN is the alignment that the object
- would ordinarily have. The value of this macro is used instead of that
- alignment to align the object.
-
- If this macro is not defined, then ALIGN is used. */
-#define DATA_ALIGNMENT(TYPE, ALIGN) \
- (TYPE_NEEDS_IWMMXT_ALIGNMENT (TYPE) ? IWMMXT_ALIGNMENT : ALIGN)
-
-/* If defined, a C expression to compute the alignment for a
- variables in the local store. TYPE is the data type, and
- BASIC-ALIGN is the alignment that the object would ordinarily
- have. The value of this macro is used instead of that alignment
- to align the object.
-
- If this macro is not defined, then BASIC-ALIGN is used. */
-#define LOCAL_ALIGNMENT(TYPE, ALIGN) \
- (TYPE_NEEDS_IWMMXT_ALIGNMENT (TYPE) ? IWMMXT_ALIGNMENT : ALIGN)
-
/* Make strings word-aligned so strcpy from constants will be faster. */
#define CONSTANT_ALIGNMENT_FACTOR (TARGET_THUMB || ! arm_tune_xscale ? 1 : 2)
-
+
#define CONSTANT_ALIGNMENT(EXP, ALIGN) \
- ((TARGET_REALLY_IWMMXT && TREE_CODE (EXP) == VECTOR_TYPE) ? IWMMXT_ALIGNMENT : \
- (TREE_CODE (EXP) == STRING_CST \
- && (ALIGN) < BITS_PER_WORD * CONSTANT_ALIGNMENT_FACTOR) \
- ? BITS_PER_WORD * CONSTANT_ALIGNMENT_FACTOR : (ALIGN))
+ ((TREE_CODE (EXP) == STRING_CST \
+ && (ALIGN) < BITS_PER_WORD * CONSTANT_ALIGNMENT_FACTOR) \
+ ? BITS_PER_WORD * CONSTANT_ALIGNMENT_FACTOR : (ALIGN))
/* Setting STRUCTURE_SIZE_BOUNDARY to 32 produces more efficient code, but the
value set in previous versions of this toolchain was 8, which produces more
compact structures. The command line option -mstructure_size_boundary=<n>
can be used to change this value. For compatibility with the ARM SDK
however the value should be left at 32. ARM SDT Reference Manual (ARM DUI
- 0020D) page 2-20 says "Structures are aligned on word boundaries". */
+ 0020D) page 2-20 says "Structures are aligned on word boundaries".
+ The AAPCS specifies a value of 8. */
#define STRUCTURE_SIZE_BOUNDARY arm_structure_size_boundary
extern int arm_structure_size_boundary;
#define DEFAULT_STRUCTURE_SIZE_BOUNDARY 32
#endif
-/* Used when parsing command line option -mstructure_size_boundary. */
-extern const char * structure_size_string;
-
/* Nonzero if move instructions will actually fail to work
when given unaligned data. */
#define STRICT_ALIGNMENT 1
+
+/* wchar_t is unsigned under the AAPCS. */
+#ifndef WCHAR_TYPE
+#define WCHAR_TYPE (TARGET_AAPCS_BASED ? "unsigned int" : "int")
+
+#define WCHAR_TYPE_SIZE BITS_PER_WORD
+#endif
+
+#ifndef SIZE_TYPE
+#define SIZE_TYPE (TARGET_AAPCS_BASED ? "unsigned int" : "long unsigned int")
+#endif
+
+/* AAPCS requires that structure alignment is affected by bitfields. */
+#ifndef PCC_BITFIELD_TYPE_MATTERS
+#define PCC_BITFIELD_TYPE_MATTERS TARGET_AAPCS_BASED
+#endif
+
\f
/* Standard register usage. */
r4-r8 S register variable
r9 S (rfp) register variable (real frame pointer)
-
+
r10 F S (sl) stack limit (used by -mapcs-stack-check)
r11 F S (fp) argument pointer
r12 (ip) temp workspace
The latter must include the registers where values are returned
and the register where structure-value addresses are passed.
Aside from that, you can include as many other registers as you like.
- The CC is not preserved over function calls on the ARM 6, so it is
+ The CC is not preserved over function calls on the ARM 6, so it is
easier to assume this for all. SFP is preserved, since FP is. */
#define CALL_USED_REGISTERS \
{ \
scratch registers. */ \
for (regno = FIRST_IWMMXT_GR_REGNUM; \
regno <= LAST_IWMMXT_GR_REGNUM; ++ regno) \
- fixed_regs[regno] = call_used_regs[regno] = 0; \
+ fixed_regs[regno] = 0; \
/* The XScale ABI has wR0 - wR9 as scratch registers, \
the rest as call-preserved registers. */ \
for (regno = FIRST_IWMMXT_REGNUM; \
fixed_regs[10] = 1; \
call_used_regs[10] = 1; \
} \
- if (TARGET_APCS_FRAME) \
+ /* -mcaller-super-interworking reserves r11 for calls to \
+ _interwork_r11_call_via_rN(). Making the register global \
+ is an easy way of ensuring that it remains valid for all \
+ calls. */ \
+ if (TARGET_APCS_FRAME || TARGET_CALLER_INTERWORKING \
+ || TARGET_TPCS_FRAME || TARGET_TPCS_LEAF_FRAME) \
{ \
fixed_regs[ARM_HARD_FRAME_POINTER_REGNUM] = 1; \
call_used_regs[ARM_HARD_FRAME_POINTER_REGNUM] = 1; \
+ if (TARGET_CALLER_INTERWORKING) \
+ global_regs[ARM_HARD_FRAME_POINTER_REGNUM] = 1; \
} \
SUBTARGET_CONDITIONAL_REGISTER_USAGE \
}
-
+
/* These are a couple of extensions to the formats accepted
by asm_fprintf:
%@ prints out ASM_COMMENT_START
#define FIRST_HI_REGNUM 8
#define LAST_HI_REGNUM 11
+#ifndef TARGET_UNWIND_INFO
+/* We use sjlj exceptions for backwards compatibility. */
+#define MUST_USE_SJLJ_EXCEPTIONS 1
+#endif
+
+/* We can generate DWARF2 Unwind info, even though we don't use it. */
+#define DWARF2_UNWIND_INFO 1
+
+/* Use r0 and r1 to pass exception handling information. */
+#define EH_RETURN_DATA_REGNO(N) (((N) < 2) ? N : INVALID_REGNUM)
+
/* The register that holds the return address in exception handlers. */
-#define EXCEPTION_LR_REGNUM 2
+#define ARM_EH_STACKADJ_REGNUM 2
+#define EH_RETURN_STACKADJ_RTX gen_rtx_REG (SImode, ARM_EH_STACKADJ_REGNUM)
/* The native (Norcroft) Pascal compiler for the ARM passes the static chain
as an invisible last argument (possible since varargs don't exist in
/* ARM floating pointer registers. */
#define FIRST_FPA_REGNUM 16
#define LAST_FPA_REGNUM 23
+#define IS_FPA_REGNUM(REGNUM) \
+ (((REGNUM) >= FIRST_FPA_REGNUM) && ((REGNUM) <= LAST_FPA_REGNUM))
#define FIRST_IWMMXT_GR_REGNUM 43
#define LAST_IWMMXT_GR_REGNUM 46
/* VFP adds 32 + 1 more. */
#define FIRST_PSEUDO_REGISTER 96
+#define DBX_REGISTER_NUMBER(REGNO) arm_dbx_register_number (REGNO)
+
/* Value should be nonzero if functions must have frame pointers.
Zero means the frame pointer need not be set up (and parms may be accessed
- via the stack pointer) in functions that seem suitable.
+ via the stack pointer) in functions that seem suitable.
If we have to have a frame pointer we might as well make use of it.
APCS says that the frame pointer does not need to be pushed in leaf
functions, or simple tail call functions. */
+
+#ifndef SUBTARGET_FRAME_POINTER_REQUIRED
+#define SUBTARGET_FRAME_POINTER_REQUIRED 0
+#endif
+
#define FRAME_POINTER_REQUIRED \
(current_function_has_nonlocal_label \
+ || SUBTARGET_FRAME_POINTER_REQUIRED \
|| (TARGET_ARM && TARGET_APCS_FRAME && ! leaf_function_p ()))
/* Return number of consecutive hard regs needed starting at reg REGNO
#define MODES_TIEABLE_P(MODE1, MODE2) \
(GET_MODE_CLASS (MODE1) == GET_MODE_CLASS (MODE2))
-#define VECTOR_MODE_SUPPORTED_P(MODE) \
- ((MODE) == V2SImode || (MODE) == V4HImode || (MODE) == V8QImode)
-
#define VALID_IWMMXT_REG_MODE(MODE) \
- (VECTOR_MODE_SUPPORTED_P (MODE) || (MODE) == DImode)
+ (arm_vector_mode_supported_p (MODE) || (MODE) == DImode)
/* The order in which register should be allocated. It is good to use ip
since no saving is required (though calls clobber it) and it never contains
function parameters. It is quite good to use lr since other calls may
- clobber it anyway. Allocate r0 through r3 in reverse order since r3 is
+ clobber it anyway. Allocate r0 through r3 in reverse order since r3 is
least likely to contain a function parameter; in addition results are
returned in r0. */
|| reg_classes_intersect_p (VFP_REGS, (CLASS)) \
: 0)
+/* We need to define this for LO_REGS on thumb. Otherwise we can end up
+ using r0-r4 for function arguments, r7 for the stack frame and don't
+ have enough left over to do doubleword arithmetic. */
+#define CLASS_LIKELY_SPILLED_P(CLASS) \
+ ((TARGET_THUMB && (CLASS) == LO_REGS) \
+ || (CLASS) == CC_REG)
+
/* The class value for index registers, and the one for base regs. */
#define INDEX_REG_CLASS (TARGET_THUMB ? LO_REGS : GENERAL_REGS)
#define BASE_REG_CLASS (TARGET_THUMB ? LO_REGS : GENERAL_REGS)
/* For the Thumb the high registers cannot be used as base registers
when addressing quantities in QI or HI mode; if we don't know the
- mode, then we must be conservative. After reload we must also be
- conservative, since we can't support SP+reg addressing, and we
- can't fix up any bad substitutions. */
+ mode, then we must be conservative. */
#define MODE_BASE_REG_CLASS(MODE) \
(TARGET_ARM ? GENERAL_REGS : \
- (((MODE) == SImode && !reload_completed) ? BASE_REGS : LO_REGS))
+ (((MODE) == SImode) ? BASE_REGS : LO_REGS))
+
+/* For Thumb we can not support SP+reg addressing, so we return LO_REGS
+ instead of BASE_REGS. */
+#define MODE_BASE_REG_REG_CLASS(MODE) BASE_REG_CLASS
/* When SMALL_REGISTER_CLASSES is nonzero, the compiler allows
registers explicitly used in the rtl to be used as spill registers
C is the letter, and VALUE is a constant value.
Return 1 if VALUE is in the range specified by C.
I: immediate arithmetic operand (i.e. 8 bits shifted as required).
- J: valid indexing constants.
+ J: valid indexing constants.
K: ~value ok in rhs argument of data operand.
- L: -value ok in rhs argument of data operand.
+ L: -value ok in rhs argument of data operand.
M: 0..32, or a power of 2 (for shifts, or mult done by shift). */
#define CONST_OK_FOR_ARM_LETTER(VALUE, C) \
((C) == 'I' ? const_ok_for_arm (VALUE) : \
#define CONST_OK_FOR_LETTER_P(VALUE, C) \
(TARGET_ARM ? \
CONST_OK_FOR_ARM_LETTER (VALUE, C) : CONST_OK_FOR_THUMB_LETTER (VALUE, C))
-
+
/* Constant letter 'G' for the FP immediate constants.
'H' means the same constant negated. */
#define CONST_DOUBLE_OK_FOR_ARM_LETTER(X, C) \
CONST_DOUBLE_OK_FOR_ARM_LETTER (X, C) : 0)
/* For the ARM, `Q' means that this is a memory operand that is just
- an offset from a register.
+ an offset from a register.
`S' means any symbol that has the SYMBOL_REF_FLAG set or a CONSTANT_POOL
address. This means that the symbol is in the text segment and can be
accessed without using a load.
+ 'D' Prefixes a number of const_double operands where:
+ 'Da' is a constant that takes two ARM insns to load.
+ 'Db' takes three ARM insns.
+ 'Dc' takes four ARM insns, if we allow that in this compilation.
'U' Prefixes an extended memory constraint where:
- 'Uv' is an address valid for VFP load/store insns.
+ 'Uv' is an address valid for VFP load/store insns.
+ 'Uy' is an address valid for iwmmxt load/store insns.
'Uq' is an address valid for ldrsb. */
-#define EXTRA_CONSTRAINT_STR_ARM(OP, C, STR) \
- (((C) == 'Q') ? (GET_CODE (OP) == MEM \
- && GET_CODE (XEXP (OP, 0)) == REG) : \
- ((C) == 'R') ? (GET_CODE (OP) == MEM \
- && GET_CODE (XEXP (OP, 0)) == SYMBOL_REF \
- && CONSTANT_POOL_ADDRESS_P (XEXP (OP, 0))) : \
- ((C) == 'S') ? (optimize > 0 && CONSTANT_ADDRESS_P (OP)) : \
- ((C) == 'T') ? cirrus_memory_offset (OP) : \
- ((C) == 'U' && (STR)[1] == 'v') ? vfp_mem_operand (OP) : \
- ((C) == 'U' && (STR)[1] == 'q') \
- ? arm_extendqisi_mem_op (OP, GET_MODE (OP)) \
- : 0)
+#define EXTRA_CONSTRAINT_STR_ARM(OP, C, STR) \
+ (((C) == 'D') ? ((GET_CODE (OP) == CONST_DOUBLE \
+ || GET_CODE (OP) == CONST_INT \
+ || GET_CODE (OP) == CONST_VECTOR) \
+ && (((STR)[1] == 'a' \
+ && arm_const_double_inline_cost (OP) == 2) \
+ || ((STR)[1] == 'b' \
+ && arm_const_double_inline_cost (OP) == 3) \
+ || ((STR)[1] == 'c' \
+ && arm_const_double_inline_cost (OP) == 4 \
+ && !(optimize_size || arm_ld_sched)))) : \
+ ((C) == 'Q') ? (GET_CODE (OP) == MEM \
+ && GET_CODE (XEXP (OP, 0)) == REG) : \
+ ((C) == 'R') ? (GET_CODE (OP) == MEM \
+ && GET_CODE (XEXP (OP, 0)) == SYMBOL_REF \
+ && CONSTANT_POOL_ADDRESS_P (XEXP (OP, 0))) : \
+ ((C) == 'S') ? (optimize > 0 && CONSTANT_ADDRESS_P (OP)) : \
+ ((C) == 'T') ? cirrus_memory_offset (OP) : \
+ ((C) == 'U' && (STR)[1] == 'v') ? arm_coproc_mem_operand (OP, FALSE) : \
+ ((C) == 'U' && (STR)[1] == 'y') ? arm_coproc_mem_operand (OP, TRUE) : \
+ ((C) == 'U' && (STR)[1] == 'q') \
+ ? arm_extendqisi_mem_op (OP, GET_MODE (OP)) \
+ : 0)
#define CONSTRAINT_LEN(C,STR) \
- ((C) == 'U' ? 2 : DEFAULT_CONSTRAINT_LEN (C, STR))
+ (((C) == 'U' || (C) == 'D') ? 2 : DEFAULT_CONSTRAINT_LEN (C, STR))
#define EXTRA_CONSTRAINT_THUMB(X, C) \
((C) == 'Q' ? (GET_CODE (X) == MEM \
: NO_REGS)
#define THUMB_SECONDARY_OUTPUT_RELOAD_CLASS(CLASS, MODE, X) \
- ((CLASS) != LO_REGS \
+ ((CLASS) != LO_REGS && (CLASS) != BASE_REGS \
? ((true_regnum (X) == -1 ? LO_REGS \
: (true_regnum (X) + HARD_REGNO_NREGS (0, MODE) > 8) ? LO_REGS \
: NO_REGS)) \
? (((MODE) == HImode && ! arm_arch4 && true_regnum (X) == -1) \
? GENERAL_REGS : NO_REGS) \
: THUMB_SECONDARY_OUTPUT_RELOAD_CLASS (CLASS, MODE, X))
-
+
/* If we need to load shorts byte-at-a-time, then we need a scratch. */
#define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, X) \
/* Restrict which direct reloads are allowed for VFP regs. */ \
(((CLASS) == IWMMXT_REGS || (CLASS) == IWMMXT_GR_REGS) \
&& CONSTANT_P (X)) \
? GENERAL_REGS : \
- (((MODE) == HImode && ! arm_arch4 && TARGET_MMU_TRAPS \
+ (((MODE) == HImode && ! arm_arch4 \
&& (GET_CODE (X) == MEM \
|| ((GET_CODE (X) == REG || GET_CODE (X) == SUBREG) \
&& true_regnum (X) == -1))) \
HOST_WIDE_INT val = INTVAL (XEXP (X, 1)); \
HOST_WIDE_INT low, high; \
\
- if (MODE == DImode || (TARGET_SOFT_FLOAT && TARGET_FPA \
- && MODE == DFmode)) \
+ if (MODE == DImode || (MODE == DFmode && TARGET_SOFT_FLOAT)) \
low = ((val & 0xf) ^ 0x8) - 0x8; \
else if (TARGET_MAVERICK && TARGET_HARD_FLOAT) \
/* Need to be careful, -256 is not a valid offset. */ \
low = val >= 0 ? (val & 0xff) : -((-val) & 0xff); \
else if (MODE == SImode \
- || (MODE == SFmode && TARGET_SOFT_FLOAT && TARGET_FPA) \
+ || (MODE == SFmode && TARGET_SOFT_FLOAT) \
|| ((MODE == HImode || MODE == QImode) && ! arm_arch4)) \
/* Need to be careful, -4096 is not a valid offset. */ \
low = val >= 0 ? (val & 0xfff) : -((-val) & 0xfff); \
ARM_LEGITIMIZE_RELOAD_ADDRESS (X, MODE, OPNUM, TYPE, IND_LEVELS, WIN); \
else \
THUMB_LEGITIMIZE_RELOAD_ADDRESS (X, MODE, OPNUM, TYPE, IND_LEVELS, WIN)
-
+
/* Return the maximum number of consecutive registers
needed to represent mode MODE in a register of class CLASS.
ARM regs are UNITS_PER_WORD bits while FPA regs can hold any FP mode */
makes the stack pointer a smaller address. */
#define STACK_GROWS_DOWNWARD 1
-/* Define this if the nominal address of the stack frame
+/* Define this to non-zero if the nominal address of the stack frame
is at the high-address end of the local variables;
that is, each additional local variable allocated
goes at a more negative offset in the frame. */
#define FRAME_GROWS_DOWNWARD 1
+/* The amount of scratch space needed by _interwork_{r7,r11}_call_via_rN().
+ When present, it is one word in size, and sits at the top of the frame,
+ between the soft frame pointer and either r7 or r11.
+
+ We only need _interwork_rM_call_via_rN() for -mcaller-super-interworking,
+ and only then if some outgoing arguments are passed on the stack. It would
+ be tempting to also check whether the stack arguments are passed by indirect
+ calls, but there seems to be no reason in principle why a post-reload pass
+ couldn't convert a direct call into an indirect one. */
+#define CALLER_INTERWORKING_SLOT_SIZE \
+ (TARGET_CALLER_INTERWORKING \
+ && current_function_outgoing_args_size != 0 \
+ ? UNITS_PER_WORD : 0)
+
/* Offset within stack frame to start allocating local variables at.
If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
first local allocated. Otherwise, it is the offset to the BEGINNING
/* Define how to find the value returned by a library function
assuming the value has mode MODE. */
#define LIBCALL_VALUE(MODE) \
- (TARGET_ARM && TARGET_HARD_FLOAT && TARGET_FPA \
+ (TARGET_ARM && TARGET_HARD_FLOAT_ABI && TARGET_FPA \
&& GET_MODE_CLASS (MODE) == MODE_FLOAT \
? gen_rtx_REG (MODE, FIRST_FPA_REGNUM) \
- : TARGET_ARM && TARGET_HARD_FLOAT && TARGET_MAVERICK \
+ : TARGET_ARM && TARGET_HARD_FLOAT_ABI && TARGET_MAVERICK \
&& GET_MODE_CLASS (MODE) == MODE_FLOAT \
? gen_rtx_REG (MODE, FIRST_CIRRUS_FP_REGNUM) \
- : TARGET_REALLY_IWMMXT && VECTOR_MODE_SUPPORTED_P (MODE) \
+ : TARGET_IWMMXT_ABI && arm_vector_mode_supported_p (MODE) \
? gen_rtx_REG (MODE, FIRST_IWMMXT_REGNUM) \
: gen_rtx_REG (MODE, ARG_REGISTER (1)))
If the precise function being called is known, FUNC is its FUNCTION_DECL;
otherwise, FUNC is 0. */
#define FUNCTION_VALUE(VALTYPE, FUNC) \
- LIBCALL_VALUE (TYPE_MODE (VALTYPE))
+ arm_function_value (VALTYPE, FUNC);
/* 1 if N is a possible register number for a function value.
On the ARM, only r0 and f0 can return results. */
#define FUNCTION_VALUE_REGNO_P(REGNO) \
((REGNO) == ARG_REGISTER (1) \
|| (TARGET_ARM && ((REGNO) == FIRST_CIRRUS_FP_REGNUM) \
- && TARGET_HARD_FLOAT && TARGET_MAVERICK) \
- || (TARGET_ARM && ((REGNO) == FIRST_IWMMXT_REGNUM) && TARGET_IWMMXT) \
+ && TARGET_HARD_FLOAT_ABI && TARGET_MAVERICK) \
+ || ((REGNO) == FIRST_IWMMXT_REGNUM && TARGET_IWMMXT_ABI) \
|| (TARGET_ARM && ((REGNO) == FIRST_FPA_REGNUM) \
- && TARGET_HARD_FLOAT && TARGET_FPA))
+ && TARGET_HARD_FLOAT_ABI && TARGET_FPA))
+
+/* Amount of memory needed for an untyped call to save all possible return
+ registers. */
+#define APPLY_RESULT_SIZE arm_apply_result_size()
/* How large values are returned */
/* A C expression which can inhibit the returning of certain function values
#define CALL_SHORT 0x00000002 /* Never call indirect. */
/* These bits describe the different types of function supported
- by the ARM backend. They are exclusive. ie a function cannot be both a
+ by the ARM backend. They are exclusive. i.e. a function cannot be both a
normal function and an interworked function, for example. Knowing the
type of a function is important for determining its prologue and
epilogue sequences.
#define ARM_FT_UNKNOWN 0 /* Type has not yet been determined. */
#define ARM_FT_NORMAL 1 /* Your normal, straightforward function. */
#define ARM_FT_INTERWORKED 2 /* A function that supports interworking. */
-#define ARM_FT_EXCEPTION_HANDLER 3 /* A C++ exception handler. */
#define ARM_FT_ISR 4 /* An interrupt service routine. */
#define ARM_FT_FIQ 5 /* A fast interrupt service routine. */
#define ARM_FT_EXCEPTION 6 /* An ARM exception handler (subcase of ISR). */
#define IS_NAKED(t) (t & ARM_FT_NAKED)
#define IS_NESTED(t) (t & ARM_FT_NESTED)
+
+/* Structure used to hold the function stack frame layout. Offsets are
+ relative to the stack pointer on function entry. Positive offsets are
+ in the direction of stack growth.
+ Only soft_frame is used in thumb mode. */
+
+typedef struct arm_stack_offsets GTY(())
+{
+ int saved_args; /* ARG_POINTER_REGNUM. */
+ int frame; /* ARM_HARD_FRAME_POINTER_REGNUM. */
+ int saved_regs;
+ int soft_frame; /* FRAME_POINTER_REGNUM. */
+ int outgoing_args; /* STACK_POINTER_REGNUM. */
+}
+arm_stack_offsets;
+
/* A C structure for machine-specific, per-function data.
This is added to the cfun structure. */
typedef struct machine_function GTY(())
/* Records if the save of LR has been eliminated. */
int lr_save_eliminated;
/* The size of the stack frame. Only valid after reload. */
- int frame_size;
+ arm_stack_offsets stack_offsets;
/* Records the type of the current function. */
unsigned long func_type;
/* Record if the function has a variable argument list. */
/* Records if sibcalls are blocked because an argument
register is needed to preserve stack alignment. */
int sibcall_blocked;
+ /* Labels for per-function Thumb call-via stubs. One per potential calling
+ register. We can never call via LR or PC. We can call via SP if a
+ trampoline happens to be on the top of the stack. */
+ rtx call_via[14];
}
machine_function;
+/* As in the machine_function, a global set of call-via labels, for code
+ that is in text_section(). */
+extern GTY(()) rtx thumb_call_via_label[14];
+
/* A C type for declaring a variable that is used as the first argument of
`FUNCTION_ARG' and other related values. For some target machines, the
type `int' suffices and can hold the number of bytes of argument so far. */
int nargs;
/* One of CALL_NORMAL, CALL_LONG or CALL_SHORT. */
int call_cookie;
+ int can_split;
} CUMULATIVE_ARGS;
/* Define where to put the arguments to a function.
#define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
arm_function_arg (&(CUM), (MODE), (TYPE), (NAMED))
-/* For an arg passed partly in registers and partly in memory,
- this is the number of registers used.
- For args passed entirely in registers or entirely in memory, zero. */
-#define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) \
- (VECTOR_MODE_SUPPORTED_P (MODE) ? 0 : \
- NUM_ARG_REGS > (CUM).nregs \
- && (NUM_ARG_REGS < ((CUM).nregs + ARM_NUM_REGS2 (MODE, TYPE))) \
- ? NUM_ARG_REGS - (CUM).nregs : 0)
-
-/* A C expression that indicates when an argument must be passed by
- reference. If nonzero for an argument, a copy of that argument is
- made in memory and a pointer to the argument is passed instead of
- the argument itself. The pointer is passed in whatever way is
- appropriate for passing a pointer to that type. */
-#define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED) \
- arm_function_arg_pass_by_reference (&CUM, MODE, TYPE, NAMED)
+#define FUNCTION_ARG_PADDING(MODE, TYPE) \
+ (arm_pad_arg_upward (MODE, TYPE) ? upward : downward)
+
+#define BLOCK_REG_PADDING(MODE, TYPE, FIRST) \
+ (arm_pad_reg_upward (MODE, TYPE, FIRST) ? upward : downward)
+
+/* For AAPCS, padding should never be below the argument. For other ABIs,
+ * mimic the default. */
+#define PAD_VARARGS_DOWN \
+ ((TARGET_AAPCS_BASED) ? 0 : BYTES_BIG_ENDIAN)
/* Initialize a variable CUM of type CUMULATIVE_ARGS
for a call to a function whose data type is FNTYPE.
(TYPE is null for libcalls where that information may not be available.) */
#define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
(CUM).nargs += 1; \
- if (VECTOR_MODE_SUPPORTED_P (MODE)) \
- if ((CUM).named_count <= (CUM).nargs) \
- (CUM).nregs += 2; \
- else \
- (CUM).iwmmxt_nregs += 1; \
+ if (arm_vector_mode_supported_p (MODE) \
+ && (CUM).named_count > (CUM).nargs) \
+ (CUM).iwmmxt_nregs += 1; \
else \
- (CUM).nregs += ARM_NUM_REGS2 (MODE, TYPE)
+ (CUM).nregs += ARM_NUM_REGS2 (MODE, TYPE)
/* If defined, a C expression that gives the alignment boundary, in bits, of an
argument with the specified mode and type. If it is not defined,
`PARM_BOUNDARY' is used for all arguments. */
#define FUNCTION_ARG_BOUNDARY(MODE,TYPE) \
- (TARGET_REALLY_IWMMXT && (VALID_IWMMXT_REG_MODE (MODE) || ((MODE) == DFmode)) \
- ? IWMMXT_ALIGNMENT : PARM_BOUNDARY)
+ ((ARM_DOUBLEWORD_ALIGN && arm_needs_doubleword_align (MODE, TYPE)) \
+ ? DOUBLEWORD_ALIGNMENT \
+ : PARM_BOUNDARY )
/* 1 if N is a possible register number for function argument passing.
On the ARM, r0-r3 are used to pass args. */
#define FUNCTION_ARG_REGNO_P(REGNO) \
(IN_RANGE ((REGNO), 0, 3) \
- || (TARGET_REALLY_IWMMXT && IN_RANGE ((REGNO), FIRST_IWMMXT_REGNUM, FIRST_IWMMXT_REGNUM + 9)))
-
-/* Implement `va_arg'. */
-#define EXPAND_BUILTIN_VA_ARG(valist, type) \
- arm_va_arg (valist, type)
+ || (TARGET_IWMMXT_ABI \
+ && IN_RANGE ((REGNO), FIRST_IWMMXT_REGNUM, FIRST_IWMMXT_REGNUM + 9)))
\f
/* If your target environment doesn't prefix user functions with an
((TO) == THUMB_HARD_FRAME_POINTER_REGNUM && TARGET_ARM) ? 0 : \
1)
-#define THUMB_REG_PUSHED_P(reg) \
- (regs_ever_live [reg] \
- && (! call_used_regs [reg] \
- || (flag_pic && (reg) == PIC_OFFSET_TABLE_REGNUM)) \
- && !(TARGET_SINGLE_PIC_BASE && ((reg) == arm_pic_register)))
-
/* Define the offset between two registers, one to be eliminated, and the
other its replacement, at the start of a routine. */
-#define ARM_INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
- do \
- { \
- (OFFSET) = arm_compute_initial_elimination_offset (FROM, TO); \
- } \
- while (0)
-
-/* Note: This macro must match the code in thumb_function_prologue(). */
-#define THUMB_INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
-{ \
- (OFFSET) = 0; \
- if ((FROM) == ARG_POINTER_REGNUM) \
- { \
- int count_regs = 0; \
- int regno; \
- for (regno = 8; regno < 13; regno ++) \
- if (THUMB_REG_PUSHED_P (regno)) \
- count_regs ++; \
- if (count_regs) \
- (OFFSET) += 4 * count_regs; \
- count_regs = 0; \
- for (regno = 0; regno <= LAST_LO_REGNUM; regno ++) \
- if (THUMB_REG_PUSHED_P (regno)) \
- count_regs ++; \
- if (count_regs || ! leaf_function_p () || thumb_far_jump_used_p (0))\
- (OFFSET) += 4 * (count_regs + 1); \
- if (TARGET_BACKTRACE) \
- { \
- if ((count_regs & 0xFF) == 0 && (regs_ever_live[3] != 0)) \
- (OFFSET) += 20; \
- else \
- (OFFSET) += 16; \
- } \
- } \
- if ((TO) == STACK_POINTER_REGNUM) \
- { \
- (OFFSET) += current_function_outgoing_args_size; \
- (OFFSET) += thumb_get_frame_size (); \
- } \
-}
-
#define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
if (TARGET_ARM) \
- ARM_INITIAL_ELIMINATION_OFFSET (FROM, TO, OFFSET); \
+ (OFFSET) = arm_compute_initial_elimination_offset (FROM, TO); \
else \
- THUMB_INITIAL_ELIMINATION_OFFSET (FROM, TO, OFFSET)
-
+ (OFFSET) = thumb_compute_initial_elimination_offset (FROM, TO)
+
/* Special case handling of the location of arguments passed on the stack. */
#define DEBUGGER_ARG_OFFSET(value, addr) value ? value : arm_debugger_arg_offset (value, addr)
-
+
/* Initialize data used by insn expanders. This is called from insn_emit,
once for every function before code is generated. */
#define INIT_EXPANDERS arm_init_expanders ()
ARM_TRAMPOLINE_TEMPLATE (FILE) \
else \
THUMB_TRAMPOLINE_TEMPLATE (FILE)
-
+
/* Length in units of the trampoline for entering a nested function. */
#define TRAMPOLINE_SIZE (TARGET_ARM ? 16 : 24)
/* Alignment required for a trampoline in bits. */
#define TRAMPOLINE_ALIGNMENT 32
+
/* Emit RTL insns to initialize the variable parts of a trampoline.
FNADDR is an RTX for the address of the function's pure code.
CXT is an RTX for the static chain value for the function. */
plus_constant (TRAMP, \
TARGET_ARM ? 12 : 20)), \
FNADDR); \
+ emit_library_call (gen_rtx_SYMBOL_REF (Pmode, "__clear_cache"), \
+ 0, VOIDmode, 2, TRAMP, Pmode, \
+ plus_constant (TRAMP, TRAMPOLINE_SIZE), Pmode); \
}
#endif
? THUMB_REGNO_MODE_OK_FOR_BASE_P (REGNO, MODE) \
: ARM_REGNO_OK_FOR_BASE_P (REGNO))
+/* Nonzero if X can be the base register in a reg+reg addressing mode.
+ For Thumb, we can not use SP + reg, so reject SP. */
+#define REGNO_MODE_OK_FOR_REG_BASE_P(X, MODE) \
+ REGNO_OK_FOR_INDEX_P (X)
+
/* For ARM code, we don't care about the mode, but for Thumb, the index
must be suitable for use in a QImode load. */
#define REGNO_OK_FOR_INDEX_P(REGNO) \
On the ARM, allow any integer (invalid ones are removed later by insn
patterns), nice doubles and symbol_refs which refer to the function's
constant pool XXX.
-
+
When generating pic allow anything. */
#define ARM_LEGITIMATE_CONSTANT_P(X) (flag_pic || ! label_mentioned_p (X))
#define THUMB_LEGITIMATE_CONSTANT_P(X) \
( GET_CODE (X) == CONST_INT \
|| GET_CODE (X) == CONST_DOUBLE \
- || GET_CODE (X) == CONSTANT_P_RTX \
|| CONSTANT_ADDRESS_P (X) \
|| flag_pic)
case SHORT_CALL_FLAG_CHAR: return 1; \
case LONG_CALL_FLAG_CHAR: return 1; \
case '*': return 1; \
- SUBTARGET_NAME_ENCODING_LENGTHS
+ SUBTARGET_NAME_ENCODING_LENGTHS
/* This is how to output a reference to a user-level label named NAME.
`assemble_name' uses this. */
#define ASM_OUTPUT_LABELREF(FILE, NAME) \
arm_asm_output_labelref (FILE, NAME)
+/* The EABI specifies that constructors should go in .init_array.
+ Other targets use .ctors for compatibility. */
+#ifndef ARM_EABI_CTORS_SECTION_OP
+#define ARM_EABI_CTORS_SECTION_OP \
+ "\t.section\t.init_array,\"aw\",%init_array"
+#endif
+#ifndef ARM_EABI_DTORS_SECTION_OP
+#define ARM_EABI_DTORS_SECTION_OP \
+ "\t.section\t.fini_array,\"aw\",%fini_array"
+#endif
+#define ARM_CTORS_SECTION_OP \
+ "\t.section\t.ctors,\"aw\",%progbits"
+#define ARM_DTORS_SECTION_OP \
+ "\t.section\t.dtors,\"aw\",%progbits"
+
+/* Define CTORS_SECTION_ASM_OP. */
+#undef CTORS_SECTION_ASM_OP
+#undef DTORS_SECTION_ASM_OP
+#ifndef IN_LIBGCC2
+# define CTORS_SECTION_ASM_OP \
+ (TARGET_AAPCS_BASED ? ARM_EABI_CTORS_SECTION_OP : ARM_CTORS_SECTION_OP)
+# define DTORS_SECTION_ASM_OP \
+ (TARGET_AAPCS_BASED ? ARM_EABI_DTORS_SECTION_OP : ARM_DTORS_SECTION_OP)
+#else /* !defined (IN_LIBGCC2) */
+/* In libgcc, CTORS_SECTION_ASM_OP must be a compile-time constant,
+ so we cannot use the definition above. */
+# ifdef __ARM_EABI__
+/* The .ctors section is not part of the EABI, so we do not define
+ CTORS_SECTION_ASM_OP when in libgcc; that prevents crtstuff
+ from trying to use it. We do define it when doing normal
+ compilation, as .init_array can be used instead of .ctors. */
+/* There is no need to emit begin or end markers when using
+ init_array; the dynamic linker will compute the size of the
+ array itself based on special symbols created by the static
+ linker. However, we do need to arrange to set up
+ exception-handling here. */
+# define CTOR_LIST_BEGIN asm (ARM_EABI_CTORS_SECTION_OP)
+# define CTOR_LIST_END /* empty */
+# define DTOR_LIST_BEGIN asm (ARM_EABI_DTORS_SECTION_OP)
+# define DTOR_LIST_END /* empty */
+# else /* !defined (__ARM_EABI__) */
+# define CTORS_SECTION_ASM_OP ARM_CTORS_SECTION_OP
+# define DTORS_SECTION_ASM_OP ARM_DTORS_SECTION_OP
+# endif /* !defined (__ARM_EABI__) */
+#endif /* !defined (IN_LIBCC2) */
+
+/* True if the operating system can merge entities with vague linkage
+ (e.g., symbols in COMDAT group) during dynamic linking. */
+#ifndef TARGET_ARM_DYNAMIC_VAGUE_LINKAGE_P
+#define TARGET_ARM_DYNAMIC_VAGUE_LINKAGE_P true
+#endif
+
+/* Set the short-call flag for any function compiled in the current
+ compilation unit. We skip this for functions with the section
+ attribute when long-calls are in effect as this tells the compiler
+ that the section might be placed a long way from the caller.
+ See arm_is_longcall_p() for more information. */
#define ARM_DECLARE_FUNCTION_SIZE(STREAM, NAME, DECL) \
- arm_encode_call_attribute (DECL, SHORT_CALL_FLAG_CHAR)
+ if (!TARGET_LONG_CALLS || ! DECL_SECTION_NAME (DECL)) \
+ arm_encode_call_attribute (DECL, SHORT_CALL_FLAG_CHAR)
+
+#define ARM_OUTPUT_FN_UNWIND(F, PROLOGUE) arm_output_fn_unwind (F, PROLOGUE)
+
+#ifdef TARGET_UNWIND_INFO
+#define ARM_EABI_UNWIND_TABLES \
+ ((!USING_SJLJ_EXCEPTIONS && flag_exceptions) || flag_unwind_tables)
+#else
+#define ARM_EABI_UNWIND_TABLES 0
+#endif
/* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
and check its validity for a certain class.
? THUMB_REG_OK_FOR_INDEX_P (X) \
: ARM_REG_OK_FOR_INDEX_P (X))
+/* Nonzero if X can be the base register in a reg+reg addressing mode.
+ For Thumb, we can not use SP + reg, so reject SP. */
+#define REG_MODE_OK_FOR_REG_BASE_P(X, MODE) \
+ REG_OK_FOR_INDEX_P (X)
\f
/* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
that is a valid memory address for an instruction.
The MODE argument is the machine mode for the MEM expression
that wants to use this address. */
-
+
#define ARM_BASE_REGISTER_RTX_P(X) \
(GET_CODE (X) == REG && ARM_REG_OK_FOR_BASE_P (X))
if (TARGET_ARM) \
ARM_GO_IF_LEGITIMATE_ADDRESS (MODE, X, WIN) \
else /* if (TARGET_THUMB) */ \
- THUMB_GO_IF_LEGITIMATE_ADDRESS (MODE, X, WIN)
+ THUMB_GO_IF_LEGITIMATE_ADDRESS (MODE, X, WIN)
\f
/* Try machine-dependent ways of modifying an illegitimate address
if (memory_address_p (MODE, X)) \
goto WIN; \
} while (0)
-
+
/* Go to LABEL if ADDR (a legitimate address expression)
has an effect that depends on the machine mode it is used for. */
#define ARM_GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL) \
/* Nothing helpful to do for the Thumb */
#define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL) \
if (TARGET_ARM) \
- ARM_GO_IF_MODE_DEPENDENT_ADDRESS (ADDR, LABEL)
+ ARM_GO_IF_MODE_DEPENDENT_ADDRESS (ADDR, LABEL)
\f
/* Specify the machine mode that this machine uses
#define DEFAULT_SIGNED_CHAR 0
#endif
-/* Don't cse the address of the function being compiled. */
-#define NO_RECURSIVE_FUNCTION_CSE 1
-
/* Max number of bytes we can move from memory to memory
in one reasonably fast instruction. */
#define MOVE_MAX 4
/* Define if loading in MODE, an integral mode narrower than BITS_PER_WORD
will either zero-extend or sign-extend. The value of this macro should
be the code that says which one of the two operations is implicitly
- done, NIL if none. */
+ done, UNKNOWN if none. */
#define LOAD_EXTEND_OP(MODE) \
(TARGET_THUMB ? ZERO_EXTEND : \
((arm_arch4 || (MODE) == QImode) ? ZERO_EXTEND \
- : ((BYTES_BIG_ENDIAN && (MODE) == HImode) ? SIGN_EXTEND : NIL)))
+ : ((BYTES_BIG_ENDIAN && (MODE) == HImode) ? SIGN_EXTEND : UNKNOWN)))
/* Nonzero if access to memory by bytes is slow and undesirable. */
#define SLOW_BYTE_ACCESS 0
#define SLOW_UNALIGNED_ACCESS(MODE, ALIGN) 1
-
+
/* Immediate shift counts are truncated by the output routines (or was it
the assembler?). Shift counts in a register are truncated by ARM. Note
that the native compiler puts too large (> 32) immediate shift counts
(TARGET_ARM ? 10 : \
((GET_MODE_SIZE (M) < 4 ? 8 : 2 * GET_MODE_SIZE (M)) \
* (CLASS == LO_REGS ? 1 : 2)))
-
+
/* Try to generate sequences that don't involve branches, we can then use
conditional instructions */
#define BRANCH_COST \
using sb (r9) all the time. */
extern int arm_pic_register;
-/* Used when parsing command line option -mpic-register=. */
-extern const char * arm_pic_register_string;
-
/* The register number of the register used to address a table of static
data addresses in memory. */
#define PIC_OFFSET_TABLE_REGNUM arm_pic_register
-#define FINALIZE_PIC arm_finalize_pic (1)
-
/* We can't directly access anything that contains a symbol,
nor can we indirect via the constant pool. */
#define LEGITIMATE_PIC_OPERAND_P(X) \
#define SELECT_CC_MODE(OP, X, Y) arm_select_cc_mode (OP, X, Y)
-#define REVERSIBLE_CC_MODE(MODE) ((MODE) != CCFPEmode)
+#define REVERSIBLE_CC_MODE(MODE) 1
+
+#define REVERSE_CONDITION(CODE,MODE) \
+ (((MODE) == CCFPmode || (MODE) == CCFPEmode) \
+ ? reverse_condition_maybe_unordered (code) \
+ : reverse_condition (code))
#define CANONICALIZE_COMPARISON(CODE, OP0, OP1) \
do \
} \
\
default: \
- abort(); \
+ gcc_unreachable (); \
} \
} \
else if (GET_CODE (X) == PRE_INC || GET_CODE (X) == POST_INC \
{ \
extern enum machine_mode output_memory_reference_mode; \
\
- if (GET_CODE (XEXP (X, 0)) != REG) \
- abort (); \
+ gcc_assert (GET_CODE (XEXP (X, 0)) == REG); \
\
if (GET_CODE (X) == PRE_DEC || GET_CODE (X) == PRE_INC) \
asm_fprintf (STREAM, "[%r, #%s%d]!", \
asm_fprintf (STREAM, "%r!", REGNO (XEXP (X, 0))); \
else if (GET_CODE (X) == PLUS) \
{ \
- if (GET_CODE (XEXP (X, 0)) != REG) \
- abort (); \
+ gcc_assert (GET_CODE (XEXP (X, 0)) == REG); \
if (GET_CODE (XEXP (X, 1)) == CONST_INT) \
asm_fprintf (STREAM, "[%r, #%wd]", \
REGNO (XEXP (X, 0)), \
#define RETURN_ADDR_RTX(COUNT, FRAME) \
arm_return_addr (COUNT, FRAME)
-/* Mask of the bits in the PC that contain the real return address
+/* Mask of the bits in the PC that contain the real return address
when running in 26-bit mode. */
#define RETURN_ADDR_MASK26 (0x03fffffc)
in 26 bit mode, the condition codes must be masked out of the \
return address. This does not apply to ARM6 and later processors \
when running in 32 bit mode. */ \
- ((!TARGET_APCS_32) ? (gen_int_mode (RETURN_ADDR_MASK26, Pmode)) \
- : (arm_arch4 || TARGET_THUMB) ? \
- (gen_int_mode ((unsigned long)0xffffffff, Pmode)) \
+ ((arm_arch4 || TARGET_THUMB) \
+ ? (gen_int_mode ((unsigned long)0xffffffff, Pmode)) \
: arm_gen_return_addr_mask ())
\f
-/* Define the codes that are matched by predicates in arm.c */
-#define PREDICATE_CODES \
- {"s_register_operand", {SUBREG, REG}}, \
- {"arm_general_register_operand", {SUBREG, REG}}, \
- {"arm_hard_register_operand", {REG}}, \
- {"f_register_operand", {SUBREG, REG}}, \
- {"arm_add_operand", {SUBREG, REG, CONST_INT}}, \
- {"arm_addimm_operand", {CONST_INT}}, \
- {"arm_float_add_operand", {SUBREG, REG, CONST_DOUBLE}}, \
- {"arm_float_rhs_operand", {SUBREG, REG, CONST_DOUBLE}}, \
- {"arm_rhs_operand", {SUBREG, REG, CONST_INT}}, \
- {"arm_not_operand", {SUBREG, REG, CONST_INT}}, \
- {"reg_or_int_operand", {SUBREG, REG, CONST_INT}}, \
- {"index_operand", {SUBREG, REG, CONST_INT}}, \
- {"thumb_cmp_operand", {SUBREG, REG, CONST_INT}}, \
- {"thumb_cmpneg_operand", {CONST_INT}}, \
- {"thumb_cbrch_target_operand", {SUBREG, REG, MEM}}, \
- {"offsettable_memory_operand", {MEM}}, \
- {"alignable_memory_operand", {MEM}}, \
- {"shiftable_operator", {PLUS, MINUS, AND, IOR, XOR}}, \
- {"minmax_operator", {SMIN, SMAX, UMIN, UMAX}}, \
- {"shift_operator", {ASHIFT, ASHIFTRT, LSHIFTRT, ROTATERT, MULT}}, \
- {"di_operand", {SUBREG, REG, CONST_INT, CONST_DOUBLE, MEM}}, \
- {"nonimmediate_di_operand", {SUBREG, REG, MEM}}, \
- {"soft_df_operand", {SUBREG, REG, CONST_DOUBLE, MEM}}, \
- {"nonimmediate_soft_df_operand", {SUBREG, REG, MEM}}, \
- {"load_multiple_operation", {PARALLEL}}, \
- {"store_multiple_operation", {PARALLEL}}, \
- {"equality_operator", {EQ, NE}}, \
- {"arm_comparison_operator", {EQ, NE, LE, LT, GE, GT, GEU, GTU, LEU, \
- LTU, UNORDERED, ORDERED, UNLT, UNLE, \
- UNGE, UNGT}}, \
- {"arm_rhsm_operand", {SUBREG, REG, CONST_INT, MEM}}, \
- {"const_shift_operand", {CONST_INT}}, \
- {"multi_register_push", {PARALLEL}}, \
- {"cc_register", {REG}}, \
- {"logical_binary_operator", {AND, IOR, XOR}}, \
- {"cirrus_register_operand", {REG}}, \
- {"cirrus_fp_register", {REG}}, \
- {"cirrus_shift_const", {CONST_INT}}, \
- {"dominant_cc_register", {REG}}, \
- {"arm_float_compare_operand", {REG, CONST_DOUBLE}}, \
- {"vfp_compare_operand", {REG, CONST_DOUBLE}},
-
-/* Define this if you have special predicates that know special things
- about modes. Genrecog will warn about certain forms of
- match_operand without a mode; if the operand predicate is listed in
- SPECIAL_MODE_PREDICATES, the warning will be suppressed. */
-#define SPECIAL_MODE_PREDICATES \
- "cc_register", "dominant_cc_register",
-
enum arm_builtins
{
ARM_BUILTIN_GETWCX,
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