/* Definitions of target machine for GNU compiler, for ARM.
- Copyright (C) 1991, 93, 94, 95, 96, 97, 98, 1999 Free Software Foundation, Inc.
+ Copyright (C) 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
+ 2001 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 (rwe11@cl.cam.ac.uk)
-
+ More major hacks by Richard Earnshaw (rearnsha@arm.com)
+ Minor hacks by Nick Clifton (nickc@cygnus.com)
+
This file is part of GNU CC.
GNU CC is free software; you can redistribute it and/or modify
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
-/* Configuration triples for ARM ports work as follows:
- (This is a bit of a mess and needs some thought)
- arm-*-*: little endian
- armel-*-*: little endian
- armeb-*-*: big endian
- If a non-embedded environment (ie: "real" OS) is specified, `arm'
- should default to that used by the OS.
-*/
-
-#ifndef __ARM_H__
-#define __ARM_H__
+#ifndef GCC_ARM_H
+#define GCC_ARM_H
#define TARGET_CPU_arm2 0x0000
#define TARGET_CPU_arm250 0x0000
#define TARGET_CPU_strongarm1100 0x0040
#define TARGET_CPU_arm9 0x0080
#define TARGET_CPU_arm9tdmi 0x0080
-/* Configure didn't specify */
+#define TARGET_CPU_xscale 0x0100
+/* Configure didn't specify. */
#define TARGET_CPU_generic 0x8000
-enum arm_cond_code
+typedef enum arm_cond_code
{
ARM_EQ = 0, ARM_NE, ARM_CS, ARM_CC, ARM_MI, ARM_PL, ARM_VS, ARM_VC,
ARM_HI, ARM_LS, ARM_GE, ARM_LT, ARM_GT, ARM_LE, ARM_AL, ARM_NV
-};
-extern enum arm_cond_code arm_current_cc;
-extern char * arm_condition_codes[];
+}
+arm_cc;
-#define ARM_INVERSE_CONDITION_CODE(X) ((enum arm_cond_code) (((int)X) ^ 1))
+extern arm_cc arm_current_cc;
-/* This is needed by the tail-calling peepholes */
-extern int frame_pointer_needed;
+#define ARM_INVERSE_CONDITION_CODE(X) ((arm_cc) (((int)X) ^ 1))
+extern int arm_target_label;
+extern int arm_ccfsm_state;
+extern struct rtx_def * arm_target_insn;
+/* Run-time compilation parameters selecting different hardware subsets. */
+extern int target_flags;
+/* The floating point instruction architecture, can be 2 or 3 */
+extern const char * target_fp_name;
+/* Define the information needed to generate branch insns. This is
+ stored from the compare operation. Note that we can't use "rtx" here
+ since it hasn't been defined! */
+extern struct rtx_def * arm_compare_op0;
+extern struct rtx_def * arm_compare_op1;
+/* The label of the current constant pool. */
+extern struct rtx_def * pool_vector_label;
+/* Set to 1 when a return insn is output, this means that the epilogue
+ is not needed. */
+extern int return_used_this_function;
+/* Nonzero if the prologue must setup `fp'. */
+extern int current_function_anonymous_args;
\f
/* Just in case configure has failed to define anything. */
#ifndef TARGET_CPU_DEFAULT
#endif
/* If the configuration file doesn't specify the cpu, the subtarget may
- override it. If it doesn't, then default to an ARM6. */
+ 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
#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
+#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
+#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
Unrecognized value in TARGET_CPU_DEFAULT.
#endif
#endif
#endif
#endif
#endif
+#endif
#ifndef CPP_PREDEFINES
-#define CPP_PREDEFINES "-Darm -Acpu(arm) -Amachine(arm)"
+#define CPP_PREDEFINES "-Acpu=arm -Amachine=arm"
#endif
#define CPP_SPEC "\
%(cpp_cpu_arch) %(cpp_apcs_pc) %(cpp_float) \
-%(cpp_endian) %(subtarget_cpp_spec)"
+%(cpp_endian) %(subtarget_cpp_spec) %(cpp_isa) %(cpp_interwork)"
+
+#define CPP_ISA_SPEC "%{mthumb:-D__thumb__} %{!mthumb:-D__arm__}"
/* Set the architecture define -- if -march= is set, then it overrides
the -mcpu= setting. */
%{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=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=armv2:-D__ARM_ARCH_2__} \
%{march=armv2a:-D__ARM_ARCH_2__} \
%{march=armv3:-D__ARM_ARCH_3__} \
%{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=*: \
%{mcpu=arm2:-D__ARM_ARCH_2__} \
%{mcpu=arm250:-D__ARM_ARCH_2__} \
%{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=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*:%(cpp_cpu_arch_default)}} \
"
#define CPP_FLOAT_DEFAULT_SPEC ""
#define CPP_ENDIAN_SPEC "\
-%{mbig-endian: \
- %{mlittle-endian: \
- %e-mbig-endian and -mlittle-endian may not be used together} \
- -D__ARMEB__ %{mwords-little-endian:-D__ARMWEL__}} \
-%{!mlittle-endian:%{!mbig-endian:%(cpp_endian_default)}} \
+%{mbig-endian: \
+ %{mlittle-endian: \
+ %e-mbig-endian and -mlittle-endian may not be used together} \
+ -D__ARMEB__ %{mwords-little-endian:-D__ARMWEL__} %{mthumb:-D__THUMBEB__}}\
+%{mlittle-endian:-D__ARMEL__ %{mthumb:-D__THUMBEL__}} \
+%{!mlittle-endian:%{!mbig-endian:%(cpp_endian_default)}} \
"
-/* Default is little endian, which doesn't define anything. */
-#define CPP_ENDIAN_DEFAULT_SPEC ""
+/* Default is little endian. */
+#define CPP_ENDIAN_DEFAULT_SPEC "-D__ARMEL__ %{mthumb:-D__THUMBEL__}"
+/* Add a define for interworking. Needed when building libgcc.a.
+ This must define __THUMB_INTERWORK__ to the pre-processor if
+ interworking is enabled by default. */
+#ifndef CPP_INTERWORK_DEFAULT_SPEC
+#define CPP_INTERWORK_DEFAULT_SPEC ""
+#endif
+
+#define CPP_INTERWORK_SPEC " \
+%{mthumb-interwork: \
+ %{mno-thumb-interwork: %eIncompatible interworking options} \
+ -D__THUMB_INTERWORK__} \
+%{!mthumb-interwork:%{!mno-thumb-interwork:%(cpp_interwork_default)}} \
+"
+
+#ifndef CC1_SPEC
#define CC1_SPEC ""
+#endif
/* This macro defines names of additional specifications to put in the specs
that can be used in various specifications like CC1_SPEC. Its definition
{ "cpp_float_default", CPP_FLOAT_DEFAULT_SPEC }, \
{ "cpp_endian", CPP_ENDIAN_SPEC }, \
{ "cpp_endian_default", CPP_ENDIAN_DEFAULT_SPEC }, \
+ { "cpp_isa", CPP_ISA_SPEC }, \
+ { "cpp_interwork", CPP_INTERWORK_SPEC }, \
+ { "cpp_interwork_default", CPP_INTERWORK_DEFAULT_SPEC }, \
{ "subtarget_cpp_spec", SUBTARGET_CPP_SPEC }, \
SUBTARGET_EXTRA_SPECS
+#ifndef SUBTARGET_EXTRA_SPECS
#define SUBTARGET_EXTRA_SPECS
-#define SUBTARGET_CPP_SPEC ""
+#endif
+#ifndef SUBTARGET_CPP_SPEC
+#define SUBTARGET_CPP_SPEC ""
+#endif
\f
/* Run-time Target Specification. */
#ifndef TARGET_VERSION
-#define TARGET_VERSION \
- fputs (" (ARM/generic)", stderr);
+#define TARGET_VERSION fputs (" (ARM/generic)", stderr);
#endif
-/* Run-time compilation parameters selecting different hardware subsets. */
-extern int target_flags;
-
-/* The floating point instruction architecture, can be 2 or 3 */
-extern const char * target_fp_name;
-
/* Nonzero if the function prologue (and epilogue) should obey
the ARM Procedure Call Standard. */
-#define ARM_FLAG_APCS_FRAME (0x0001)
+#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 (0x0002)
+#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 (0x0004)
+#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 (0x0020)
+#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 (0x0040)
+#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 (0x0080)
+#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 (0x0100)
+#define ARM_FLAG_APCS_REENT (1 << 6)
-/* Nonzero if the MMU will trap unaligned word accesses, so shorts must be
- loaded byte-at-a-time. */
-#define ARM_FLAG_SHORT_BYTE (0x0200)
+/* 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 (0x0400)
+#define ARM_FLAG_SOFT_FLOAT (1 << 8)
/* Nonzero if we should compile with BYTES_BIG_ENDIAN set to 1. */
-#define ARM_FLAG_BIG_END (0x0800)
+#define ARM_FLAG_BIG_END (1 << 9)
/* Nonzero if we should compile for Thumb interworking. */
-#define ARM_FLAG_THUMB (0x1000)
+#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 (0x2000)
+#define ARM_FLAG_LITTLE_WORDS (1 << 11)
/* Nonzero if we need to protect the prolog from scheduling */
-#define ARM_FLAG_NO_SCHED_PRO (0x4000)
+#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 (0x8000)
+ 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)
-#define TARGET_APCS (target_flags & ARM_FLAG_APCS_FRAME)
+/* 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)
+
+#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)
-/* Note: TARGET_SHORT_BY_BYTES is really a misnomer. What it means is
- that short values should not be accessed using word load instructions
- as there is a possibility that they may not be word aligned and this
- would generate an MMU fault. On processors which do not have a 16 bit
- load instruction therefore, short values must be loaded by individual
- byte accesses rather than loading a word and then shifting the desired
- value into place. */
-#define TARGET_SHORT_BY_BYTES (target_flags & ARM_FLAG_SHORT_BYTE)
+#define TARGET_MMU_TRAPS (target_flags & ARM_FLAG_MMU_TRAPS)
#define TARGET_SOFT_FLOAT (target_flags & ARM_FLAG_SOFT_FLOAT)
#define TARGET_HARD_FLOAT (! TARGET_SOFT_FLOAT)
#define TARGET_BIG_END (target_flags & ARM_FLAG_BIG_END)
-#define TARGET_THUMB_INTERWORK (target_flags & ARM_FLAG_THUMB)
+#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_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_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))
/* SUBTARGET_SWITCHES is used to add flags on a per-config basis.
Bit 31 is reserved. See riscix.h. */
#define SUBTARGET_SWITCHES
#endif
-#define TARGET_SWITCHES \
-{ \
- {"apcs", ARM_FLAG_APCS_FRAME, "" }, \
- {"apcs-frame", ARM_FLAG_APCS_FRAME, \
- "Generate APCS conformant stack frames" }, \
- {"no-apcs-frame", -ARM_FLAG_APCS_FRAME, "" }, \
- {"poke-function-name", ARM_FLAG_POKE, \
- "Store function names in object code" }, \
- {"no-poke-function-name", -ARM_FLAG_POKE, "" }, \
- {"fpe", ARM_FLAG_FPE, "" }, \
- {"apcs-32", ARM_FLAG_APCS_32, \
- "Use the 32bit version of the APCS" }, \
- {"apcs-26", -ARM_FLAG_APCS_32, \
- "Use the 26bit 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, \
- "Pass FP arguments in FP registers" }, \
- {"no-apcs-float", -ARM_FLAG_APCS_FLOAT, "" }, \
- {"apcs-reentrant", ARM_FLAG_APCS_REENT, \
- "Generate re-entrant, PIC code" }, \
- {"no-apcs-reentrant", -ARM_FLAG_APCS_REENT, "" }, \
- {"short-load-bytes", ARM_FLAG_SHORT_BYTE, \
- "Load shorts a byte at a time" }, \
- {"no-short-load-bytes", -ARM_FLAG_SHORT_BYTE, "" }, \
- {"short-load-words", -ARM_FLAG_SHORT_BYTE, \
- "Load words a byte at a time" }, \
- {"no-short-load-words", ARM_FLAG_SHORT_BYTE, "" }, \
- {"soft-float", ARM_FLAG_SOFT_FLOAT, \
- "Use library calls to perform FP operations" }, \
- {"hard-float", -ARM_FLAG_SOFT_FLOAT, \
- "Use hardware floating point instructions" }, \
- {"big-endian", ARM_FLAG_BIG_END, \
- "Assume target CPU is configured as big endian" }, \
- {"little-endian", -ARM_FLAG_BIG_END, \
- "Assume target CPU is configured as little endian" }, \
- {"words-little-endian", ARM_FLAG_LITTLE_WORDS, \
- "Assume big endian bytes, little endian words" }, \
- {"thumb-interwork", ARM_FLAG_THUMB, \
- "Support calls between THUMB and ARM instructions sets" }, \
- {"no-thumb-interwork", -ARM_FLAG_THUMB, "" }, \
- {"abort-on-noreturn", ARM_FLAG_ABORT_NORETURN, \
- "Generate a call to abort if a noreturn function returns"}, \
- {"no-abort-on-noreturn", -ARM_FLAG_ABORT_NORETURN, ""}, \
- {"sched-prolog", -ARM_FLAG_NO_SCHED_PRO, \
- "Do not move instructions into a function's prologue" }, \
- {"no-sched-prolog", ARM_FLAG_NO_SCHED_PRO, "" }, \
- SUBTARGET_SWITCHES \
- {"", TARGET_DEFAULT } \
+#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, \
+ "" }, \
+ SUBTARGET_SWITCHES \
+ {"", TARGET_DEFAULT, "" } \
}
#define TARGET_OPTIONS \
{ \
{"cpu=", & arm_select[0].string, \
- "Specify the name of the target CPU" }, \
+ N_("Specify the name of the target CPU") }, \
{"arch=", & arm_select[1].string, \
- "Specify the name of the target architecture" }, \
+ N_("Specify the name of the target architecture") }, \
{"tune=", & arm_select[2].string, "" }, \
{"fpe=", & target_fp_name, "" }, \
{"fp=", & target_fp_name, \
- "Specify the version of the floating point emulator" }, \
- { "structure-size-boundary=", & structure_size_string, \
- "Specify the minumum bit alignment of structures" } \
+ N_("Specify the version of the floating point emulator") }, \
+ {"structure-size-boundary=", & structure_size_string, \
+ N_("Specify the minimum bit alignment of structures") }, \
+ {"pic-register=", & arm_pic_register_string, \
+ N_("Specify the register to be used for PIC addressing") } \
}
struct arm_cpu_select
/* Default floating point architecture. Override in sub-target if
necessary. */
+#ifndef FP_DEFAULT
#define FP_DEFAULT FP_SOFT2
+#endif
/* Nonzero if the processor has a fast multiply insn, and one that does
a 64-bit multiply of two 32-bit values. */
/* Nonzero if this chip supports the ARM Architecture 5 extensions */
extern int arm_arch5;
+/* Nonzero if this chip supports the ARM Architecture 5E extensions */
+extern int arm_arch5e;
+
/* Nonzero if this chip can benefit from load scheduling. */
extern int arm_ld_sched;
+/* Nonzero if generating thumb code. */
+extern int thumb_code;
+
/* Nonzero if this chip is a StrongARM. */
extern int arm_is_strong;
+/* Nonzero if this chip is an XScale. */
+extern int arm_is_xscale;
+
/* Nonzero if this chip is a an ARM6 or an ARM7. */
extern int arm_is_6_or_7;
#ifndef TARGET_DEFAULT
-#define TARGET_DEFAULT 0
+#define TARGET_DEFAULT (ARM_FLAG_APCS_FRAME)
#endif
/* The frame pointer register used in gcc has nothing to do with debugging;
that is controlled by the APCS-FRAME option. */
-/* Not fully implemented yet */
-/* #define CAN_DEBUG_WITHOUT_FP 1 */
+#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
PLT and GOT relocs rather than the assembler doing so implicitly.
- Subtargets can override this if required. */
-#ifndef NEED_PLT_GOT
-#define NEED_PLT_GOT 0
+ Subtargets can override these if required. */
+#ifndef NEED_GOT_RELOC
+#define NEED_GOT_RELOC 0
+#endif
+#ifndef NEED_PLT_RELOC
+#define NEED_PLT_RELOC 0
#endif
/* Nonzero if we need to refer to the GOT with a PC-relative
/* It is far faster to zero extend chars than to sign extend them */
-#define PROMOTE_MODE(MODE,UNSIGNEDP,TYPE) \
+#define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE) \
if (GET_MODE_CLASS (MODE) == MODE_INT \
&& GET_MODE_SIZE (MODE) < 4) \
{ \
if (MODE == QImode) \
UNSIGNEDP = 1; \
else if (MODE == HImode) \
- UNSIGNEDP = TARGET_SHORT_BY_BYTES != 0; \
+ UNSIGNEDP = TARGET_MMU_TRAPS != 0; \
(MODE) = SImode; \
}
#define FUNCTION_BOUNDARY 32
+/* The lowest bit is used to indicate Thumb-mode functions, so the
+ vbit must go into the delta field of pointers to member
+ functions. */
+#define TARGET_PTRMEMFUNC_VBIT_LOCATION ptrmemfunc_vbit_in_delta
+
#define EMPTY_FIELD_BOUNDARY 32
#define BIGGEST_ALIGNMENT 32
/* Make strings word-aligned so strcpy from constants will be faster. */
-#define CONSTANT_ALIGNMENT(EXP, ALIGN) \
- (TREE_CODE (EXP) == STRING_CST \
- && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
-
-/* Every structures size must be a multiple of 32 bits. */
-/* This is for compatibility with ARMCC. ARM SDT Reference Manual
- (ARM DUI 0020D) page 2-20 says "Structures are aligned on word
- boundaries". */
-#ifndef STRUCTURE_SIZE_BOUNDARY
-#define STRUCTURE_SIZE_BOUNDARY 32
+#define CONSTANT_ALIGNMENT_FACTOR (TARGET_THUMB || ! arm_is_xscale ? 1 : 2)
+
+#define CONSTANT_ALIGNMENT(EXP, 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". */
+#define STRUCTURE_SIZE_BOUNDARY arm_structure_size_boundary
+extern int arm_structure_size_boundary;
+
+/* This is the value used to initialise arm_structure_size_boundary. If a
+ particular arm target wants to change the default value it should change
+ the definition of this macro, not STRUCTRUE_SIZE_BOUNDARY. See netbsd.h
+ for an example of this. */
+#ifndef DEFAULT_STRUCTURE_SIZE_BOUNDARY
+#define DEFAULT_STRUCTURE_SIZE_BOUNDARY 32
#endif
/* Used when parsing command line option -mstructure_size_boundary. */
[| saved f4 value |] three words
r0-r3 are not normally saved in a C function. */
-/* The number of hard registers is 16 ARM + 8 FPU + 1 CC + 1 SFP. */
-#define FIRST_PSEUDO_REGISTER 27
-
/* 1 for registers that have pervasive standard uses
and are not available for the register allocator. */
#define FIXED_REGISTERS \
{ \
0,0,0,0,0,0,0,0, \
- 0,0,0,1,0,1,0,1, \
+ 0,0,0,0,0,1,0,1, \
0,0,0,0,0,0,0,0, \
1,1,1 \
}
#define CALL_USED_REGISTERS \
{ \
1,1,1,1,0,0,0,0, \
- 0,0,0,1,1,1,1,1, \
+ 0,0,0,0,1,1,1,1, \
1,1,1,1,0,0,0,0, \
1,1,1 \
}
#define SUBTARGET_CONDITIONAL_REGISTER_USAGE
#endif
-/* If doing stupid life analysis, avoid a bug causing a return value r0 to be
- trampled. This effectively reduces the number of available registers by 1.
- XXX It is a hack, I know.
- XXX Is this still needed? */
-#define CONDITIONAL_REGISTER_USAGE \
-{ \
- if (obey_regdecls) \
- fixed_regs[0] = 1; \
- if (TARGET_SOFT_FLOAT) \
- { \
- int regno; \
- for (regno = 16; regno < 24; ++regno) \
- fixed_regs[regno] = call_used_regs[regno] = 1; \
- } \
- if (flag_pic) \
- { \
- fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
- call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
- } \
- else if (TARGET_APCS_STACK) \
- { \
- fixed_regs[10] = 1; \
- call_used_regs[10] = 1; \
- } \
- SUBTARGET_CONDITIONAL_REGISTER_USAGE \
+#define CONDITIONAL_REGISTER_USAGE \
+{ \
+ if (TARGET_SOFT_FLOAT || TARGET_THUMB) \
+ { \
+ int regno; \
+ for (regno = FIRST_ARM_FP_REGNUM; \
+ regno <= LAST_ARM_FP_REGNUM; ++regno) \
+ fixed_regs[regno] = call_used_regs[regno] = 1; \
+ } \
+ if (flag_pic) \
+ { \
+ fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
+ call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
+ } \
+ else if (TARGET_APCS_STACK) \
+ { \
+ fixed_regs[10] = 1; \
+ call_used_regs[10] = 1; \
+ } \
+ if (TARGET_APCS_FRAME) \
+ { \
+ fixed_regs[ARM_HARD_FRAME_POINTER_REGNUM] = 1; \
+ call_used_regs[ARM_HARD_FRAME_POINTER_REGNUM] = 1; \
+ } \
+ SUBTARGET_CONDITIONAL_REGISTER_USAGE \
}
+
+/* These are a couple of extensions to the formats accecpted
+ by asm_fprintf:
+ %@ prints out ASM_COMMENT_START
+ %r prints out REGISTER_PREFIX reg_names[arg] */
+#define ASM_FPRINTF_EXTENSIONS(FILE, ARGS, P) \
+ case '@': \
+ fputs (ASM_COMMENT_START, FILE); \
+ break; \
+ \
+ case 'r': \
+ fputs (REGISTER_PREFIX, FILE); \
+ fputs (reg_names [va_arg (ARGS, int)], FILE); \
+ break;
+
+/* Round X up to the nearest word. */
+#define ROUND_UP(X) (((X) + 3) & ~3)
+
+/* Convert fron bytes to ints. */
+#define NUM_INTS(X) (((X) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
+
+/* The number of (integer) registers required to hold a quantity of type MODE. */
+#define NUM_REGS(MODE) \
+ NUM_INTS (GET_MODE_SIZE (MODE))
+
+/* The number of (integer) registers required to hold a quantity of TYPE MODE. */
+#define NUM_REGS2(MODE, TYPE) \
+ NUM_INTS ((MODE) == BLKmode ? \
+ int_size_in_bytes (TYPE) : GET_MODE_SIZE (MODE))
+
+/* The number of (integer) argument register available. */
+#define NUM_ARG_REGS 4
+
+/* Return the regiser number of the N'th (integer) argument. */
+#define ARG_REGISTER(N) (N - 1)
+
+/* RTX for structure returns. NULL means use a hidden first argument. */
+#define STRUCT_VALUE 0
-/* Return number of consecutive hard regs needed starting at reg REGNO
- to hold something of mode MODE.
- This is ordinarily the length in words of a value of mode MODE
- but can be less for certain modes in special long registers.
+/* Specify the registers used for certain standard purposes.
+ The values of these macros are register numbers. */
- On the ARM regs are UNITS_PER_WORD bits wide; FPU regs can hold any FP
- mode. */
-#define HARD_REGNO_NREGS(REGNO, MODE) \
- (((REGNO) >= 16 && REGNO != FRAME_POINTER_REGNUM \
- && (REGNO) != ARG_POINTER_REGNUM) ? 1 \
- : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
+/* The number of the last argument register. */
+#define LAST_ARG_REGNUM ARG_REGISTER (NUM_ARG_REGS)
-/* Value is 1 if hard register REGNO can hold a value of machine-mode MODE.
- This is TRUE for ARM regs since they can hold anything, and TRUE for FPU
- regs holding FP. */
-#define HARD_REGNO_MODE_OK(REGNO, MODE) \
- ((GET_MODE_CLASS (MODE) == MODE_CC) ? (REGNO == CC_REGNUM) : \
- ((REGNO) < 16 || REGNO == FRAME_POINTER_REGNUM \
- || REGNO == ARG_POINTER_REGNUM \
- || GET_MODE_CLASS (MODE) == MODE_FLOAT))
+/* The number of the last "lo" register (thumb). */
+#define LAST_LO_REGNUM 7
-/* Value is 1 if it is a good idea to tie two pseudo registers
- when one has mode MODE1 and one has mode MODE2.
- If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
- for any hard reg, then this must be 0 for correct output. */
-#define MODES_TIEABLE_P(MODE1, MODE2) \
- (GET_MODE_CLASS (MODE1) == GET_MODE_CLASS (MODE2))
+/* The register that holds the return address in exception handlers. */
+#define EXCEPTION_LR_REGNUM 2
-/* Specify the registers used for certain standard purposes.
- The values of these macros are register numbers. */
+/* The native (Norcroft) Pascal compiler for the ARM passes the static chain
+ as an invisible last argument (possible since varargs don't exist in
+ Pascal), so the following is not true. */
+#define STATIC_CHAIN_REGNUM (TARGET_ARM ? 12 : 9)
+
+/* Define this to be where the real frame pointer is if it is not possible to
+ work out the offset between the frame pointer and the automatic variables
+ until after register allocation has taken place. FRAME_POINTER_REGNUM
+ should point to a special register that we will make sure is eliminated.
-/* Define this if the program counter is overloaded on a register. */
-#define PC_REGNUM 15
+ For the Thumb we have another problem. The TPCS defines the frame pointer
+ as r11, and GCC belives that it is always possible to use the frame pointer
+ as base register for addressing purposes. (See comments in
+ find_reloads_address()). But - the Thumb does not allow high registers,
+ including r11, to be used as base address registers. Hence our problem.
+
+ The solution used here, and in the old thumb port is to use r7 instead of
+ r11 as the hard frame pointer and to have special code to generate
+ backtrace structures on the stack (if required to do so via a command line
+ option) using r11. This is the only 'user visable' use of r11 as a frame
+ pointer. */
+#define ARM_HARD_FRAME_POINTER_REGNUM 11
+#define THUMB_HARD_FRAME_POINTER_REGNUM 7
+
+#define HARD_FRAME_POINTER_REGNUM \
+ (TARGET_ARM \
+ ? ARM_HARD_FRAME_POINTER_REGNUM \
+ : THUMB_HARD_FRAME_POINTER_REGNUM)
+
+#define FP_REGNUM HARD_FRAME_POINTER_REGNUM
/* Register to use for pushing function arguments. */
-#define STACK_POINTER_REGNUM 13
+#define STACK_POINTER_REGNUM SP_REGNUM
+
+/* ARM floating pointer registers. */
+#define FIRST_ARM_FP_REGNUM 16
+#define LAST_ARM_FP_REGNUM 23
/* Base register for access to local variables of the function. */
#define FRAME_POINTER_REGNUM 25
-/* Define this to be where the real frame pointer is if it is not possible to
- work out the offset between the frame pointer and the automatic variables
- until after register allocation has taken place. FRAME_POINTER_REGNUM
- should point to a special register that we will make sure is eliminated. */
-#define HARD_FRAME_POINTER_REGNUM 11
-
-/* Register which holds return address from a subroutine call. */
-#define LR_REGNUM 14
+/* Base register for access to arguments of the function. */
+#define ARG_POINTER_REGNUM 26
-/* Scratch register - used in all kinds of places, eg trampolines. */
-#define IP_REGNUM 12
+/* The number of hard registers is 16 ARM + 8 FPU + 1 CC + 1 SFP. */
+#define FIRST_PSEUDO_REGISTER 27
/* 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
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. */
-#define FRAME_POINTER_REQUIRED \
- (current_function_has_nonlocal_label || (TARGET_APCS && !leaf_function_p ()))
+#define FRAME_POINTER_REQUIRED \
+ (current_function_has_nonlocal_label \
+ || (TARGET_ARM && TARGET_APCS_FRAME && ! leaf_function_p ()))
-/* Base register for access to arguments of the function. */
-#define ARG_POINTER_REGNUM 26
+/* Return number of consecutive hard regs needed starting at reg REGNO
+ to hold something of mode MODE.
+ This is ordinarily the length in words of a value of mode MODE
+ but can be less for certain modes in special long registers.
-/* The native (Norcroft) Pascal compiler for the ARM passes the static chain
- as an invisible last argument (possible since varargs don't exist in
- Pascal), so the following is not true. */
-#define STATIC_CHAIN_REGNUM 8
+ On the ARM regs are UNITS_PER_WORD bits wide; FPU regs can hold any FP
+ mode. */
+#define HARD_REGNO_NREGS(REGNO, MODE) \
+ ((TARGET_ARM \
+ && REGNO >= FIRST_ARM_FP_REGNUM \
+ && REGNO != FRAME_POINTER_REGNUM \
+ && REGNO != ARG_POINTER_REGNUM) \
+ ? 1 : NUM_REGS (MODE))
-/* Register in which address to store a structure value
- is passed to a function. */
-#define STRUCT_VALUE_REGNUM 0
+/* Value is 1 if hard register REGNO can hold a value of machine-mode MODE.
+ This is TRUE for ARM regs since they can hold anything, and TRUE for FPU
+ regs holding FP.
+ For the Thumb we only allow values bigger than SImode in registers 0 - 6,
+ so that there is always a second lo register available to hold the upper
+ part of the value. Probably we ought to ensure that the register is the
+ start of an even numbered register pair. */
+#define HARD_REGNO_MODE_OK(REGNO, MODE) \
+ (TARGET_ARM ? \
+ ((GET_MODE_CLASS (MODE) == MODE_CC) ? (REGNO == CC_REGNUM) : \
+ ( REGNO <= LAST_ARM_REGNUM \
+ || REGNO == FRAME_POINTER_REGNUM \
+ || REGNO == ARG_POINTER_REGNUM \
+ || GET_MODE_CLASS (MODE) == MODE_FLOAT)) \
+ : \
+ ((GET_MODE_CLASS (MODE) == MODE_CC) ? (REGNO == CC_REGNUM) : \
+ (NUM_REGS (MODE) < 2 || REGNO < LAST_LO_REGNUM)))
-/* Internal, so that we don't need to refer to a raw number */
-#define CC_REGNUM 24
+/* Value is 1 if it is a good idea to tie two pseudo registers
+ when one has mode MODE1 and one has mode MODE2.
+ If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
+ for any hard reg, then this must be 0 for correct output. */
+#define MODES_TIEABLE_P(MODE1, MODE2) \
+ (GET_MODE_CLASS (MODE1) == GET_MODE_CLASS (MODE2))
/* 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
least likely to contain a function parameter; in addition results are
- returned in r0.
- */
+ returned in r0. */
#define REG_ALLOC_ORDER \
{ \
3, 2, 1, 0, 12, 14, 4, 5, \
\f
/* Register and constant classes. */
-/* Register classes: all ARM regs or all FPU regs---simple! */
+/* Register classes: used to be simple, just all ARM regs or all FPU regs
+ Now that the Thumb is involved it has become more compilcated. */
enum reg_class
{
NO_REGS,
FPU_REGS,
+ LO_REGS,
+ STACK_REG,
+ BASE_REGS,
+ HI_REGS,
+ CC_REG,
GENERAL_REGS,
ALL_REGS,
LIM_REG_CLASSES
{ \
"NO_REGS", \
"FPU_REGS", \
+ "LO_REGS", \
+ "STACK_REG", \
+ "BASE_REGS", \
+ "HI_REGS", \
+ "CC_REG", \
"GENERAL_REGS", \
"ALL_REGS", \
}
{ \
{ 0x0000000 }, /* NO_REGS */ \
{ 0x0FF0000 }, /* FPU_REGS */ \
+ { 0x00000FF }, /* LO_REGS */ \
+ { 0x0002000 }, /* STACK_REG */ \
+ { 0x00020FF }, /* BASE_REGS */ \
+ { 0x000FF00 }, /* HI_REGS */ \
+ { 0x1000000 }, /* CC_REG */ \
{ 0x200FFFF }, /* GENERAL_REGS */ \
{ 0x2FFFFFF } /* ALL_REGS */ \
}
-
+
/* The same information, inverted:
Return the class number of the smallest class containing
reg number REGNO. This could be a conditional expression
or could index an array. */
-#define REGNO_REG_CLASS(REGNO) \
- (((REGNO) < 16 || REGNO == FRAME_POINTER_REGNUM \
- || REGNO == ARG_POINTER_REGNUM) \
- ? GENERAL_REGS : (REGNO) == CC_REGNUM \
- ? NO_REGS : FPU_REGS)
+#define REGNO_REG_CLASS(REGNO) arm_regno_class (REGNO)
/* The class value for index registers, and the one for base regs. */
-#define INDEX_REG_CLASS GENERAL_REGS
-#define BASE_REG_CLASS GENERAL_REGS
+#define INDEX_REG_CLASS (TARGET_THUMB ? LO_REGS : GENERAL_REGS)
+#define BASE_REG_CLASS (TARGET_THUMB ? BASE_REGS : GENERAL_REGS)
+
+/* When SMALL_REGISTER_CLASSES is nonzero, the compiler allows
+ registers explicitly used in the rtl to be used as spill registers
+ but prevents the compiler from extending the lifetime of these
+ registers. */
+#define SMALL_REGISTER_CLASSES TARGET_THUMB
/* Get reg_class from a letter such as appears in the machine description.
- We only need constraint `f' for FPU_REGS (`r' == GENERAL_REGS). */
-#define REG_CLASS_FROM_LETTER(C) \
- ((C)=='f' ? FPU_REGS : NO_REGS)
+ We only need constraint `f' for FPU_REGS (`r' == GENERAL_REGS) for the
+ ARM, but several more letters for the Thumb. */
+#define REG_CLASS_FROM_LETTER(C) \
+ ( (C) == 'f' ? FPU_REGS \
+ : (C) == 'l' ? (TARGET_ARM ? GENERAL_REGS : LO_REGS) \
+ : TARGET_ARM ? NO_REGS \
+ : (C) == 'h' ? HI_REGS \
+ : (C) == 'b' ? BASE_REGS \
+ : (C) == 'k' ? STACK_REG \
+ : (C) == 'c' ? CC_REG \
+ : NO_REGS)
/* The letters I, J, K, L and M in a register constraint string
can be used to stand for particular ranges of immediate operands.
K: ~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_LETTER_P(VALUE, C) \
+#define CONST_OK_FOR_ARM_LETTER(VALUE, C) \
((C) == 'I' ? const_ok_for_arm (VALUE) : \
(C) == 'J' ? ((VALUE) < 4096 && (VALUE) > -4096) : \
(C) == 'K' ? (const_ok_for_arm (~(VALUE))) : \
|| (((VALUE) & ((VALUE) - 1)) == 0)) \
: 0)
+#define CONST_OK_FOR_THUMB_LETTER(VAL, C) \
+ ((C) == 'I' ? (unsigned HOST_WIDE_INT) (VAL) < 256 : \
+ (C) == 'J' ? (VAL) > -256 && (VAL) < 0 : \
+ (C) == 'K' ? thumb_shiftable_const (VAL) : \
+ (C) == 'L' ? (VAL) > -8 && (VAL) < 8 : \
+ (C) == 'M' ? ((unsigned HOST_WIDE_INT) (VAL) < 1024 \
+ && ((VAL) & 3) == 0) : \
+ (C) == 'N' ? ((unsigned HOST_WIDE_INT) (VAL) < 32) : \
+ (C) == 'O' ? ((VAL) >= -508 && (VAL) <= 508) \
+ : 0)
+
+#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 FPU immediate constants.
+ 'H' means the same constant negated. */
+#define CONST_DOUBLE_OK_FOR_ARM_LETTER(X, C) \
+ ((C) == 'G' ? const_double_rtx_ok_for_fpu (X) : \
+ (C) == 'H' ? neg_const_double_rtx_ok_for_fpu (X) : 0)
+
+#define CONST_DOUBLE_OK_FOR_LETTER_P(X, C) \
+ (TARGET_ARM ? \
+ 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.
`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. */
-#define EXTRA_CONSTRAINT(OP, C) \
- ((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)) \
+#define EXTRA_CONSTRAINT_ARM(OP, C) \
+ ((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)) \
: 0)
-/* Constant letter 'G' for the FPU immediate constants.
- 'H' means the same constant negated. */
-#define CONST_DOUBLE_OK_FOR_LETTER_P(X,C) \
- ((C) == 'G' ? const_double_rtx_ok_for_fpu (X) \
- : (C) == 'H' ? neg_const_double_rtx_ok_for_fpu (X) : 0)
+#define EXTRA_CONSTRAINT_THUMB(X, C) \
+ ((C) == 'Q' ? (GET_CODE (X) == MEM \
+ && GET_CODE (XEXP (X, 0)) == LABEL_REF) : 0)
+
+#define EXTRA_CONSTRAINT(X, C) \
+ (TARGET_ARM ? \
+ EXTRA_CONSTRAINT_ARM (X, C) : EXTRA_CONSTRAINT_THUMB (X, C))
/* Given an rtx X being reloaded into a reg required to be
in class CLASS, return the class of reg to actually use.
- In general this is just CLASS; but on some machines
- in some cases it is preferable to use a more restrictive class. */
-#define PREFERRED_RELOAD_CLASS(X, CLASS) (CLASS)
+ In general this is just CLASS, but for the Thumb we prefer
+ a LO_REGS class or a subset. */
+#define PREFERRED_RELOAD_CLASS(X, CLASS) \
+ (TARGET_ARM ? (CLASS) : \
+ ((CLASS) == BASE_REGS ? (CLASS) : LO_REGS))
+
+/* Must leave BASE_REGS reloads alone */
+#define THUMB_SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, X) \
+ ((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)) \
+ : NO_REGS)
+
+#define THUMB_SECONDARY_OUTPUT_RELOAD_CLASS(CLASS, MODE, X) \
+ ((CLASS) != LO_REGS \
+ ? ((true_regnum (X) == -1 ? LO_REGS \
+ : (true_regnum (X) + HARD_REGNO_NREGS (0, MODE) > 8) ? LO_REGS \
+ : NO_REGS)) \
+ : NO_REGS)
/* Return the register class of a scratch register needed to copy IN into
or out of a register in CLASS in MODE. If it can be done directly,
NO_REGS is returned. */
-#define SECONDARY_OUTPUT_RELOAD_CLASS(CLASS,MODE,X) \
- (((MODE) == HImode && ! arm_arch4 && true_regnum (X) == -1) \
- ? GENERAL_REGS : NO_REGS)
-
+#define SECONDARY_OUTPUT_RELOAD_CLASS(CLASS, MODE, X) \
+ (TARGET_ARM ? \
+ (((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) \
- (((MODE) == HImode && ! arm_arch4 && TARGET_SHORT_BY_BYTES \
- && (GET_CODE (X) == MEM \
- || ((GET_CODE (X) == REG || GET_CODE (X) == SUBREG) \
- && true_regnum (X) == -1))) \
- ? GENERAL_REGS : NO_REGS)
+#define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, X) \
+ (TARGET_ARM ? \
+ (((MODE) == HImode && ! arm_arch4 && TARGET_MMU_TRAPS \
+ && (GET_CODE (X) == MEM \
+ || ((GET_CODE (X) == REG || GET_CODE (X) == SUBREG) \
+ && true_regnum (X) == -1))) \
+ ? GENERAL_REGS : NO_REGS) \
+ : THUMB_SECONDARY_INPUT_RELOAD_CLASS (CLASS, MODE, X))
/* Try a machine-dependent way of reloading an illegitimate address
operand. If we find one, push the reload and jump to WIN. This
For the ARM, we wish to handle large displacements off a base
register by splitting the addend across a MOV and the mem insn.
- This can cut the number of reloads needed. */
-#define LEGITIMIZE_RELOAD_ADDRESS(X, MODE, OPNUM, TYPE, IND_LEVELS, WIN) \
- do \
- { \
- if (GET_CODE (X) == PLUS \
- && GET_CODE (XEXP (X, 0)) == REG \
- && REGNO (XEXP (X, 0)) < FIRST_PSEUDO_REGISTER \
- && REG_MODE_OK_FOR_BASE_P (XEXP (X, 0), MODE) \
- && GET_CODE (XEXP (X, 1)) == CONST_INT) \
- { \
- HOST_WIDE_INT val = INTVAL (XEXP (X, 1)); \
- HOST_WIDE_INT low, high; \
- \
- if (MODE == DImode || (TARGET_SOFT_FLOAT && MODE == DFmode)) \
- low = ((val & 0xf) ^ 0x8) - 0x8; \
- else if (MODE == SImode || MODE == QImode \
- || (MODE == SFmode && TARGET_SOFT_FLOAT) \
- || (MODE == HImode && ! arm_arch4)) \
- /* Need to be careful, -4096 is not a valid offset */ \
- low = val >= 0 ? (val & 0xfff) : -((-val) & 0xfff); \
- else if (MODE == HImode && arm_arch4) \
- /* Need to be careful, -256 is not a valid offset */ \
- low = val >= 0 ? (val & 0xff) : -((-val) & 0xff); \
- else if (GET_MODE_CLASS (MODE) == MODE_FLOAT \
- && TARGET_HARD_FLOAT) \
- /* Need to be careful, -1024 is not a valid offset */ \
- low = val >= 0 ? (val & 0x3ff) : -((-val) & 0x3ff); \
- else \
- break; \
- \
- high = ((((val - low) & 0xffffffff) ^ 0x80000000) - 0x80000000); \
- /* Check for overflow or zero */ \
- if (low == 0 || high == 0 || (high + low != val)) \
- break; \
- \
- /* Reload the high part into a base reg; leave the low part \
- in the mem. */ \
- X = gen_rtx_PLUS (GET_MODE (X), \
- gen_rtx_PLUS (GET_MODE (X), XEXP (X, 0), \
- GEN_INT (high)), \
- GEN_INT (low)); \
- push_reload (XEXP (X, 0), NULL_RTX, &XEXP (X, 0), NULL_PTR, \
- BASE_REG_CLASS, GET_MODE (X), VOIDmode, 0, 0, \
- OPNUM, TYPE); \
- goto WIN; \
- } \
- } \
+ This can cut the number of reloads needed. */
+#define ARM_LEGITIMIZE_RELOAD_ADDRESS(X, MODE, OPNUM, TYPE, IND, WIN) \
+ do \
+ { \
+ if (GET_CODE (X) == PLUS \
+ && GET_CODE (XEXP (X, 0)) == REG \
+ && REGNO (XEXP (X, 0)) < FIRST_PSEUDO_REGISTER \
+ && REG_MODE_OK_FOR_BASE_P (XEXP (X, 0), MODE) \
+ && GET_CODE (XEXP (X, 1)) == CONST_INT) \
+ { \
+ HOST_WIDE_INT val = INTVAL (XEXP (X, 1)); \
+ HOST_WIDE_INT low, high; \
+ \
+ if (MODE == DImode || (TARGET_SOFT_FLOAT && MODE == DFmode)) \
+ low = ((val & 0xf) ^ 0x8) - 0x8; \
+ else if (MODE == SImode \
+ || (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); \
+ else if ((MODE == HImode || MODE == QImode) && arm_arch4) \
+ /* Need to be careful, -256 is not a valid offset. */ \
+ low = val >= 0 ? (val & 0xff) : -((-val) & 0xff); \
+ else if (GET_MODE_CLASS (MODE) == MODE_FLOAT \
+ && TARGET_HARD_FLOAT) \
+ /* Need to be careful, -1024 is not a valid offset. */ \
+ low = val >= 0 ? (val & 0x3ff) : -((-val) & 0x3ff); \
+ else \
+ break; \
+ \
+ high = ((((val - low) & (unsigned HOST_WIDE_INT) 0xffffffff) \
+ ^ (unsigned HOST_WIDE_INT) 0x80000000) \
+ - (unsigned HOST_WIDE_INT) 0x80000000); \
+ /* Check for overflow or zero */ \
+ if (low == 0 || high == 0 || (high + low != val)) \
+ break; \
+ \
+ /* Reload the high part into a base reg; leave the low part \
+ in the mem. */ \
+ X = gen_rtx_PLUS (GET_MODE (X), \
+ gen_rtx_PLUS (GET_MODE (X), XEXP (X, 0), \
+ GEN_INT (high)), \
+ GEN_INT (low)); \
+ push_reload (XEXP (X, 0), NULL_RTX, &XEXP (X, 0), NULL, \
+ BASE_REG_CLASS, GET_MODE (X), VOIDmode, 0, 0, \
+ OPNUM, TYPE); \
+ goto WIN; \
+ } \
+ } \
while (0)
+/* ??? If an HImode FP+large_offset address is converted to an HImode
+ SP+large_offset address, then reload won't know how to fix it. It sees
+ only that SP isn't valid for HImode, and so reloads the SP into an index
+ register, but the resulting address is still invalid because the offset
+ is too big. We fix it here instead by reloading the entire address. */
+/* We could probably achieve better results by defining PROMOTE_MODE to help
+ cope with the variances between the Thumb's signed and unsigned byte and
+ halfword load instructions. */
+#define THUMB_LEGITIMIZE_RELOAD_ADDRESS(X, MODE, OPNUM, TYPE, IND_LEVELS, WIN) \
+{ \
+ if (GET_CODE (X) == PLUS \
+ && GET_MODE_SIZE (MODE) < 4 \
+ && GET_CODE (XEXP (X, 0)) == REG \
+ && XEXP (X, 0) == stack_pointer_rtx \
+ && GET_CODE (XEXP (X, 1)) == CONST_INT \
+ && ! THUMB_LEGITIMATE_OFFSET (MODE, INTVAL (XEXP (X, 1)))) \
+ { \
+ rtx orig_X = X; \
+ X = copy_rtx (X); \
+ push_reload (orig_X, NULL_RTX, &X, NULL, \
+ BASE_REG_CLASS, \
+ Pmode, VOIDmode, 0, 0, OPNUM, TYPE); \
+ goto WIN; \
+ } \
+}
+
+#define LEGITIMIZE_RELOAD_ADDRESS(X, MODE, OPNUM, TYPE, IND_LEVELS, WIN) \
+ if (TARGET_ARM) \
+ 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 FPU regs can hold any FP mode */
#define CLASS_MAX_NREGS(CLASS, MODE) \
- ((CLASS) == FPU_REGS ? 1 \
- : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
+ ((CLASS) == FPU_REGS ? 1 : NUM_REGS (MODE))
/* Moves between FPU_REGS and GENERAL_REGS are two memory insns. */
-#define REGISTER_MOVE_COST(CLASS1, CLASS2) \
- ((((CLASS1) == FPU_REGS && (CLASS2) != FPU_REGS) \
- || ((CLASS2) == FPU_REGS && (CLASS1) != FPU_REGS)) \
- ? 20 : 2)
+#define REGISTER_MOVE_COST(MODE, FROM, TO) \
+ (TARGET_ARM ? \
+ ((FROM) == FPU_REGS && (TO) != FPU_REGS ? 20 : \
+ (FROM) != FPU_REGS && (TO) == FPU_REGS ? 20 : 2) \
+ : \
+ ((FROM) == HI_REGS || (TO) == HI_REGS) ? 4 : 2)
\f
/* Stack layout; function entry, exit and calling. */
/* If we generate an insn to push BYTES bytes,
this says how many the stack pointer really advances by. */
-/* The push insns do not do this rounding implicitly. So don't define this. */
-/* #define PUSH_ROUNDING(NPUSHED) (((NPUSHED) + 3) & ~3) */
+/* The push insns do not do this rounding implicitly.
+ So don't define this. */
+/* #define PUSH_ROUNDING(NPUSHED) ROUND_UP (NPUSHED) */
/* Define this if the maximum size of all the outgoing args is to be
accumulated and pushed during the prologue. The amount can be
found in the variable current_function_outgoing_args_size. */
-#define ACCUMULATE_OUTGOING_ARGS
+#define ACCUMULATE_OUTGOING_ARGS 1
/* Offset of first parameter from the argument pointer register value. */
-#define FIRST_PARM_OFFSET(FNDECL) 4
+#define FIRST_PARM_OFFSET(FNDECL) (TARGET_ARM ? 4 : 0)
/* Value is the number of byte of arguments automatically
popped when returning from a subroutine call.
On the ARM, the caller does not pop any of its arguments that were passed
on the stack. */
-#define RETURN_POPS_ARGS(FUNDECL,FUNTYPE,SIZE) 0
+#define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, SIZE) 0
+
+/* 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 && GET_MODE_CLASS (MODE) == MODE_FLOAT \
+ ? gen_rtx_REG (MODE, FIRST_ARM_FP_REGNUM) \
+ : gen_rtx_REG (MODE, ARG_REGISTER (1)))
/* Define how to find the value returned by a function.
VALTYPE is the data type of the value (as a tree).
If the precise function being called is known, FUNC is its FUNCTION_DECL;
otherwise, FUNC is 0. */
-#define FUNCTION_VALUE(VALTYPE, FUNC) \
- (GET_MODE_CLASS (TYPE_MODE (VALTYPE)) == MODE_FLOAT && TARGET_HARD_FLOAT \
- ? gen_rtx_REG (TYPE_MODE (VALTYPE), 16) \
- : gen_rtx_REG (TYPE_MODE (VALTYPE), 0))
-
-/* Define how to find the value returned by a library function
- assuming the value has mode MODE. */
-#define LIBCALL_VALUE(MODE) \
- (GET_MODE_CLASS (MODE) == MODE_FLOAT && TARGET_HARD_FLOAT \
- ? gen_rtx_REG (MODE, 16) \
- : gen_rtx_REG (MODE, 0))
+#define FUNCTION_VALUE(VALTYPE, FUNC) \
+ LIBCALL_VALUE (TYPE_MODE (VALTYPE))
/* 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) == 0 || (((REGNO) == 16) && TARGET_HARD_FLOAT))
+ ((REGNO) == ARG_REGISTER (1) \
+ || (TARGET_ARM && ((REGNO) == FIRST_ARM_FP_REGNUM) && TARGET_HARD_FLOAT))
/* How large values are returned */
/* A C expression which can inhibit the returning of certain function values
than a word, or if they contain elements offset from zero in the struct. */
#define DEFAULT_PCC_STRUCT_RETURN 0
+/* Flags for the call/call_value rtl operations set up by function_arg. */
+#define CALL_NORMAL 0x00000000 /* No special processing. */
+#define CALL_LONG 0x00000001 /* Always call indirect. */
+#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
+ normal function and an interworked function, for example. Knowing the
+ type of a function is important for determining its prologue and
+ epilogue sequences.
+ Note value 7 is currently unassigned. Also note that the interrupt
+ function types all have bit 2 set, so that they can be tested for easily.
+ Note that 0 is deliberately chosen for ARM_FT_UNKNOWN so that when the
+ machine_function structure is initialised (to zero) func_type will
+ default to unknown. This will force the first use of arm_current_func_type
+ to call arm_compute_func_type. */
+#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 ARM_FT_TYPE_MASK ((1 << 3) - 1)
+
+/* In addition functions can have several type modifiers,
+ outlined by these bit masks: */
+#define ARM_FT_INTERRUPT (1 << 2) /* Note overlap with FT_ISR and above. */
+#define ARM_FT_NAKED (1 << 3) /* No prologue or epilogue. */
+#define ARM_FT_VOLATILE (1 << 4) /* Does not return. */
+#define ARM_FT_NESTED (1 << 5) /* Embedded inside another func. */
+
+/* Some macros to test these flags. */
+#define ARM_FUNC_TYPE(t) (t & ARM_FT_TYPE_MASK)
+#define IS_INTERRUPT(t) (t & ARM_FT_INTERRUPT)
+#define IS_VOLATILE(t) (t & ARM_FT_VOLATILE)
+#define IS_NAKED(t) (t & ARM_FT_NAKED)
+#define IS_NESTED(t) (t & ARM_FT_NESTED)
+
+/* A C structure for machine-specific, per-function data.
+ This is added to the cfun structure. */
+typedef struct machine_function
+{
+ /* Additionsl stack adjustment in __builtin_eh_throw. */
+ struct rtx_def *eh_epilogue_sp_ofs;
+ /* Records if LR has to be saved for far jumps. */
+ int far_jump_used;
+ /* Records if ARG_POINTER was ever live. */
+ int arg_pointer_live;
+ /* Records if the save of LR has been eliminated. */
+ int lr_save_eliminated;
+ /* Records the type of the current function. */
+ unsigned long func_type;
+}
+machine_function;
+
+/* 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. */
+typedef struct
+{
+ /* This is the number of registers of arguments scanned so far. */
+ int nregs;
+ /* One of CALL_NORMAL, CALL_LONG or CALL_SHORT . */
+ int call_cookie;
+} CUMULATIVE_ARGS;
+
/* Define where to put the arguments to a function.
Value is zero to push the argument on the stack,
or a hard register in which to store the argument.
only in assign_parms, since SETUP_INCOMING_VARARGS is defined), say it is
passed in the stack (function_prologue will indeed make it pass in the
stack if necessary). */
-#define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
- ((NAMED) \
- ? ((CUM) >= 16 ? 0 : gen_rtx_REG (MODE, (CUM) / 4)) \
- : 0)
+#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) \
- ((CUM) < 16 && 16 < (CUM) + ((MODE) != BLKmode \
- ? GET_MODE_SIZE (MODE) \
- : int_size_in_bytes (TYPE)) \
- ? 4 - (CUM) / 4 : 0)
-
-/* 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.
-
- On the ARM, this is the number of bytes of arguments scanned so far. */
-#define CUMULATIVE_ARGS int
+#define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) \
+ ( NUM_ARG_REGS > (CUM).nregs \
+ && (NUM_ARG_REGS < ((CUM).nregs + NUM_REGS2 (MODE, TYPE))) \
+ ? NUM_ARG_REGS - (CUM).nregs : 0)
/* Initialize a variable CUM of type CUMULATIVE_ARGS
for a call to a function whose data type is FNTYPE.
For a library call, FNTYPE is 0.
On the ARM, the offset starts at 0. */
-#define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT) \
- ((CUM) = (((FNTYPE) && aggregate_value_p (TREE_TYPE ((FNTYPE)))) ? 4 : 0))
+#define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT) \
+ arm_init_cumulative_args (&(CUM), (FNTYPE), (LIBNAME), (INDIRECT))
/* Update the data in CUM to advance over an argument
of mode MODE and data type TYPE.
(TYPE is null for libcalls where that information may not be available.) */
-#define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
- (CUM) += ((MODE) != BLKmode \
- ? (GET_MODE_SIZE (MODE) + 3) & ~3 \
- : (int_size_in_bytes (TYPE) + 3) & ~3) \
+#define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
+ (CUM).nregs += NUM_REGS2 (MODE, TYPE)
/* 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) \
- ((REGNO) >= 0 && (REGNO) <= 3)
+#define FUNCTION_ARG_REGNO_P(REGNO) (IN_RANGE ((REGNO), 0, 3))
+
+\f
+/* Tail calling. */
+
+/* A C expression that evaluates to true if it is ok to perform a sibling
+ call to DECL. */
+#define FUNCTION_OK_FOR_SIBCALL(DECL) arm_function_ok_for_sibcall ((DECL))
/* Perform any actions needed for a function that is receiving a variable
number of arguments. CUM is as above. MODE and TYPE are the mode and type
named arg and all anonymous args onto the stack.
XXX I know the prologue shouldn't be pushing registers, but it is faster
that way. */
-#define SETUP_INCOMING_VARARGS(CUM, MODE, TYPE, PRETEND_SIZE, NO_RTL) \
+#define SETUP_INCOMING_VARARGS(CUM, MODE, TYPE, PRETEND_SIZE, NO_RTL) \
{ \
extern int current_function_anonymous_args; \
current_function_anonymous_args = 1; \
- if ((CUM) < 16) \
- (PRETEND_SIZE) = 16 - (CUM); \
+ if ((CUM).nregs < NUM_ARG_REGS) \
+ (PRETEND_SIZE) = (NUM_ARG_REGS - (CUM).nregs) * UNITS_PER_WORD; \
}
-/* Generate assembly output for the start of a function. */
-#define FUNCTION_PROLOGUE(STREAM, SIZE) \
- output_func_prologue ((STREAM), (SIZE))
-
/* If your target environment doesn't prefix user functions with an
underscore, you may wish to re-define this to prevent any conflicts.
e.g. AOF may prefix mcount with an underscore. */
The ``mov ip,lr'' seems like a good idea to stick with cc convention.
``prof'' doesn't seem to mind about this! */
-#define FUNCTION_PROFILER(STREAM,LABELNO) \
-{ \
- char temp[20]; \
- rtx sym; \
- \
- fprintf ((STREAM), "\tmov\t%s%s, %s%s\n\tbl\t", \
- REGISTER_PREFIX, reg_names[IP_REGNUM] /* ip */, \
- REGISTER_PREFIX, reg_names[LR_REGNUM] /* lr */); \
- assemble_name ((STREAM), ARM_MCOUNT_NAME); \
- fputc ('\n', (STREAM)); \
- ASM_GENERATE_INTERNAL_LABEL (temp, "LP", (LABELNO)); \
- sym = gen_rtx (SYMBOL_REF, Pmode, temp); \
- ASM_OUTPUT_INT ((STREAM), sym); \
+#ifndef ARM_FUNCTION_PROFILER
+#define ARM_FUNCTION_PROFILER(STREAM, LABELNO) \
+{ \
+ char temp[20]; \
+ rtx sym; \
+ \
+ asm_fprintf (STREAM, "\tmov\t%r, %r\n\tbl\t", \
+ IP_REGNUM, LR_REGNUM); \
+ assemble_name (STREAM, ARM_MCOUNT_NAME); \
+ fputc ('\n', STREAM); \
+ ASM_GENERATE_INTERNAL_LABEL (temp, "LP", LABELNO); \
+ sym = gen_rtx (SYMBOL_REF, Pmode, temp); \
+ ASM_OUTPUT_INT (STREAM, sym); \
+}
+#endif
+
+#define THUMB_FUNCTION_PROFILER(STREAM, LABELNO) \
+{ \
+ fprintf (STREAM, "\tmov\\tip, lr\n"); \
+ fprintf (STREAM, "\tbl\tmcount\n"); \
+ fprintf (STREAM, "\t.word\tLP%d\n", LABELNO); \
}
+#define FUNCTION_PROFILER(STREAM, LABELNO) \
+ if (TARGET_ARM) \
+ ARM_FUNCTION_PROFILER (STREAM, LABELNO) \
+ else \
+ THUMB_FUNCTION_PROFILER (STREAM, LABELNO)
+
/* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
the stack pointer does not matter. The value is tested only in
functions that have frame pointers.
frame. */
#define EXIT_IGNORE_STACK 1
-/* Generate the assembly code for function exit. */
-#define FUNCTION_EPILOGUE(STREAM, SIZE) \
- output_func_epilogue ((STREAM), (SIZE))
+#define EPILOGUE_USES(REGNO) (reload_completed && (REGNO) == LR_REGNUM)
/* Determine if the epilogue should be output as RTL.
You should override this if you define FUNCTION_EXTRA_EPILOGUE. */
-#define USE_RETURN_INSN(ISCOND) use_return_insn (ISCOND)
+#define USE_RETURN_INSN(ISCOND) \
+ (TARGET_ARM ? use_return_insn (ISCOND) : 0)
/* Definitions for register eliminations.
arg pointer register can often be eliminated in favor of the stack
pointer register. Secondly, the pseudo frame pointer register can always
be eliminated; it is replaced with either the stack or the real frame
- pointer. */
+ pointer. Note we have to use {ARM|THUMB}_HARD_FRAME_POINTER_REGNUM
+ because the defintion of HARD_FRAME_POINTER_REGNUM is not a constant. */
-#define ELIMINABLE_REGS \
-{{ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
- {ARG_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}, \
- {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
- {FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}}
+#define ELIMINABLE_REGS \
+{{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM },\
+ { ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM },\
+ { ARG_POINTER_REGNUM, ARM_HARD_FRAME_POINTER_REGNUM },\
+ { ARG_POINTER_REGNUM, THUMB_HARD_FRAME_POINTER_REGNUM },\
+ { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM },\
+ { FRAME_POINTER_REGNUM, ARM_HARD_FRAME_POINTER_REGNUM },\
+ { FRAME_POINTER_REGNUM, THUMB_HARD_FRAME_POINTER_REGNUM }}
-/* Given FROM and TO register numbers, say whether this elimination is allowed.
- Frame pointer elimination is automatically handled.
+/* Given FROM and TO register numbers, say whether this elimination is
+ allowed. Frame pointer elimination is automatically handled.
All eliminations are permissible. Note that ARG_POINTER_REGNUM and
HARD_FRAME_POINTER_REGNUM are in fact the same thing. If we need a frame
pointer, we must eliminate FRAME_POINTER_REGNUM into
- HARD_FRAME_POINTER_REGNUM and not into STACK_POINTER_REGNUM. */
-#define CAN_ELIMINATE(FROM, TO) \
- (((TO) == STACK_POINTER_REGNUM && frame_pointer_needed) ? 0 : 1)
+ HARD_FRAME_POINTER_REGNUM and not into STACK_POINTER_REGNUM or
+ ARG_POINTER_REGNUM. */
+#define CAN_ELIMINATE(FROM, TO) \
+ (((TO) == FRAME_POINTER_REGNUM && (FROM) == ARG_POINTER_REGNUM) ? 0 : \
+ ((TO) == STACK_POINTER_REGNUM && frame_pointer_needed) ? 0 : \
+ ((TO) == ARM_HARD_FRAME_POINTER_REGNUM && TARGET_THUMB) ? 0 : \
+ ((TO) == THUMB_HARD_FRAME_POINTER_REGNUM && TARGET_ARM) ? 0 : \
+ 1)
+
+/* 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)
-/* Define the offset between two registers, one to be eliminated, and the other
- its replacement, at the start of a routine. */
-#define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
+/* Note: This macro must match the code in thumb_function_prologue(). */
+#define THUMB_INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
{ \
- int volatile_func = arm_volatile_func (); \
- if ((FROM) == ARG_POINTER_REGNUM && (TO) == HARD_FRAME_POINTER_REGNUM)\
- (OFFSET) = 0; \
- else if ((FROM) == FRAME_POINTER_REGNUM \
- && (TO) == STACK_POINTER_REGNUM) \
- (OFFSET) = (current_function_outgoing_args_size \
- + ((get_frame_size () + 3) & ~3)); \
- else \
+ (OFFSET) = 0; \
+ if ((FROM) == ARG_POINTER_REGNUM) \
{ \
+ int count_regs = 0; \
int regno; \
- int offset = 12; \
- int saved_hard_reg = 0; \
- \
- if (! volatile_func) \
+ for (regno = 8; regno < 13; regno ++) \
+ if (regs_ever_live[regno] && ! call_used_regs[regno]) \
+ count_regs ++; \
+ if (count_regs) \
+ (OFFSET) += 4 * count_regs; \
+ count_regs = 0; \
+ for (regno = 0; regno <= LAST_LO_REGNUM; regno ++) \
+ if (regs_ever_live[regno] && ! call_used_regs[regno]) \
+ count_regs ++; \
+ if (count_regs || ! leaf_function_p () || thumb_far_jump_used_p (0))\
+ (OFFSET) += 4 * (count_regs + 1); \
+ if (TARGET_BACKTRACE) \
{ \
- for (regno = 0; regno <= 10; regno++) \
- if (regs_ever_live[regno] && ! call_used_regs[regno]) \
- saved_hard_reg = 1, offset += 4; \
- /* PIC register is a fixed reg, so call_used_regs set. */ \
- if (flag_pic && regs_ever_live[PIC_OFFSET_TABLE_REGNUM]) \
- saved_hard_reg = 1, offset += 4; \
- for (regno = 16; regno <=23; regno++) \
- if (regs_ever_live[regno] && ! call_used_regs[regno]) \
- offset += 12; \
- } \
- if ((FROM) == FRAME_POINTER_REGNUM) \
- (OFFSET) = -offset; \
- else \
- { \
- if (! frame_pointer_needed) \
- offset -= 16; \
- if (! volatile_func \
- && (regs_ever_live[LR_REGNUM] || saved_hard_reg)) \
- offset += 4; \
- offset += current_function_outgoing_args_size; \
- (OFFSET) = ((get_frame_size () + 3) & ~3) + offset; \
- } \
+ 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) += ROUND_UP (get_frame_size ()); \
+ } \
}
+#define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
+ if (TARGET_ARM) \
+ ARM_INITIAL_ELIMINATION_OFFSET (FROM, TO, OFFSET); \
+ else \
+ THUMB_INITIAL_ELIMINATION_OFFSET (FROM, TO, OFFSET)
+
+/* 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 ()
+
/* Output assembler code for a block containing the constant parts
of a trampoline, leaving space for the variable parts.
.word static chain value
.word function's address
??? FIXME: When the trampoline returns, r8 will be clobbered. */
-#define TRAMPOLINE_TEMPLATE(FILE) \
-{ \
- fprintf ((FILE), "\tldr\t%s%s, [%s%s, #0]\n", \
- REGISTER_PREFIX, reg_names[STATIC_CHAIN_REGNUM], \
- REGISTER_PREFIX, reg_names[PC_REGNUM]); \
- fprintf ((FILE), "\tldr\t%s%s, [%s%s, #0]\n", \
- REGISTER_PREFIX, reg_names[PC_REGNUM], \
- REGISTER_PREFIX, reg_names[PC_REGNUM]); \
- ASM_OUTPUT_INT ((FILE), const0_rtx); \
- ASM_OUTPUT_INT ((FILE), const0_rtx); \
+#define ARM_TRAMPOLINE_TEMPLATE(FILE) \
+{ \
+ asm_fprintf (FILE, "\tldr\t%r, [%r, #0]\n", \
+ STATIC_CHAIN_REGNUM, PC_REGNUM); \
+ asm_fprintf (FILE, "\tldr\t%r, [%r, #0]\n", \
+ PC_REGNUM, PC_REGNUM); \
+ ASM_OUTPUT_INT (FILE, const0_rtx); \
+ ASM_OUTPUT_INT (FILE, const0_rtx); \
+}
+
+/* On the Thumb we always switch into ARM mode to execute the trampoline.
+ Why - because it is easier. This code will always be branched to via
+ a BX instruction and since the compiler magically generates the address
+ of the function the linker has no opportunity to ensure that the
+ bottom bit is set. Thus the processor will be in ARM mode when it
+ reaches this code. So we duplicate the ARM trampoline code and add
+ a switch into Thumb mode as well. */
+#define THUMB_TRAMPOLINE_TEMPLATE(FILE) \
+{ \
+ fprintf (FILE, "\t.code 32\n"); \
+ fprintf (FILE, ".Ltrampoline_start:\n"); \
+ asm_fprintf (FILE, "\tldr\t%r, [%r, #8]\n", \
+ STATIC_CHAIN_REGNUM, PC_REGNUM); \
+ asm_fprintf (FILE, "\tldr\t%r, [%r, #8]\n", \
+ IP_REGNUM, PC_REGNUM); \
+ asm_fprintf (FILE, "\torr\t%r, %r, #1\n", \
+ IP_REGNUM, IP_REGNUM); \
+ asm_fprintf (FILE, "\tbx\t%r\n", IP_REGNUM); \
+ fprintf (FILE, "\t.word\t0\n"); \
+ fprintf (FILE, "\t.word\t0\n"); \
+ fprintf (FILE, "\t.code 16\n"); \
}
+#define TRAMPOLINE_TEMPLATE(FILE) \
+ if (TARGET_ARM) \
+ ARM_TRAMPOLINE_TEMPLATE (FILE) \
+ else \
+ THUMB_TRAMPOLINE_TEMPLATE (FILE)
+
/* Length in units of the trampoline for entering a nested function. */
-#define TRAMPOLINE_SIZE 16
+#define TRAMPOLINE_SIZE (TARGET_ARM ? 16 : 24)
/* Alignment required for a trampoline in units. */
#define TRAMPOLINE_ALIGN 4
/* 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. */
-#define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
-{ \
- emit_move_insn (gen_rtx_MEM (SImode, plus_constant ((TRAMP), 8)), \
- (CXT)); \
- emit_move_insn (gen_rtx_MEM (SImode, plus_constant ((TRAMP), 12)), \
- (FNADDR)); \
+#define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
+{ \
+ emit_move_insn \
+ (gen_rtx_MEM (SImode, plus_constant (TRAMP, TARGET_ARM ? 8 : 16)), CXT); \
+ emit_move_insn \
+ (gen_rtx_MEM (SImode, plus_constant (TRAMP, TARGET_ARM ? 12 : 20)), FNADDR); \
}
\f
/* Addressing modes, and classification of registers for them. */
-
#define HAVE_POST_INCREMENT 1
-#define HAVE_PRE_INCREMENT 1
-#define HAVE_POST_DECREMENT 1
-#define HAVE_PRE_DECREMENT 1
+#define HAVE_PRE_INCREMENT TARGET_ARM
+#define HAVE_POST_DECREMENT TARGET_ARM
+#define HAVE_PRE_DECREMENT TARGET_ARM
/* Macros to check register numbers against specific register classes. */
They give nonzero only if REGNO is a hard reg of the suitable class
or a pseudo reg currently allocated to a suitable hard reg.
Since they use reg_renumber, they are safe only once reg_renumber
- has been allocated, which happens in local-alloc.c.
-
- On the ARM, don't allow the pc to be used. */
-#define REGNO_OK_FOR_BASE_P(REGNO) \
- ((REGNO) < 15 || (REGNO) == FRAME_POINTER_REGNUM \
- || (REGNO) == ARG_POINTER_REGNUM \
- || (unsigned) reg_renumber[(REGNO)] < 15 \
- || (unsigned) reg_renumber[(REGNO)] == FRAME_POINTER_REGNUM \
- || (unsigned) reg_renumber[(REGNO)] == ARG_POINTER_REGNUM)
-#define REGNO_OK_FOR_INDEX_P(REGNO) \
- REGNO_OK_FOR_BASE_P(REGNO)
+ has been allocated, which happens in local-alloc.c. */
+#define TEST_REGNO(R, TEST, VALUE) \
+ ((R TEST VALUE) || ((unsigned) reg_renumber[R] TEST VALUE))
+
+/* On the ARM, don't allow the pc to be used. */
+#define ARM_REGNO_OK_FOR_BASE_P(REGNO) \
+ (TEST_REGNO (REGNO, <, PC_REGNUM) \
+ || TEST_REGNO (REGNO, ==, FRAME_POINTER_REGNUM) \
+ || TEST_REGNO (REGNO, ==, ARG_POINTER_REGNUM))
+
+#define THUMB_REGNO_MODE_OK_FOR_BASE_P(REGNO, MODE) \
+ (TEST_REGNO (REGNO, <=, LAST_LO_REGNUM) \
+ || (GET_MODE_SIZE (MODE) >= 4 \
+ && TEST_REGNO (REGNO, ==, STACK_POINTER_REGNUM)))
+
+#define REGNO_MODE_OK_FOR_BASE_P(REGNO, MODE) \
+ (TARGET_THUMB \
+ ? THUMB_REGNO_MODE_OK_FOR_BASE_P (REGNO, MODE) \
+ : ARM_REGNO_OK_FOR_BASE_P (REGNO))
+
+/* 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) \
+ REGNO_MODE_OK_FOR_BASE_P (REGNO, QImode)
/* Maximum number of registers that can appear in a valid memory address.
Shifts in addresses can't be by a register. */
-
#define MAX_REGS_PER_ADDRESS 2
/* Recognize any constant value that is a valid address. */
#ifdef AOF_ASSEMBLER
#define CONSTANT_ADDRESS_P(X) \
- (GET_CODE (X) == SYMBOL_REF \
- && CONSTANT_POOL_ADDRESS_P (X))
+ (GET_CODE (X) == SYMBOL_REF && CONSTANT_POOL_ADDRESS_P (X))
#else
#define CONSTANT_ADDRESS_P(X) \
(GET_CODE (X) == SYMBOL_REF \
&& (CONSTANT_POOL_ADDRESS_P (X) \
- || (optimize > 0 && SYMBOL_REF_FLAG (X))))
+ || (TARGET_ARM && optimize > 0 && SYMBOL_REF_FLAG (X))))
#endif /* AOF_ASSEMBLER */
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. */
-#define LEGITIMATE_CONSTANT_P(X) (! label_mentioned_p (X))
+ 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 \
+ || CONSTANT_ADDRESS_P (X))
+
+#define LEGITIMATE_CONSTANT_P(X) \
+ (TARGET_ARM ? ARM_LEGITIMATE_CONSTANT_P (X) : THUMB_LEGITIMATE_CONSTANT_P (X))
+
+/* Special characters prefixed to function names
+ in order to encode attribute like information.
+ Note, '@' and '*' have already been taken. */
+#define SHORT_CALL_FLAG_CHAR '^'
+#define LONG_CALL_FLAG_CHAR '#'
+
+#define ENCODED_SHORT_CALL_ATTR_P(SYMBOL_NAME) \
+ (*(SYMBOL_NAME) == SHORT_CALL_FLAG_CHAR)
+
+#define ENCODED_LONG_CALL_ATTR_P(SYMBOL_NAME) \
+ (*(SYMBOL_NAME) == LONG_CALL_FLAG_CHAR)
+
+#ifndef SUBTARGET_NAME_ENCODING_LENGTHS
+#define SUBTARGET_NAME_ENCODING_LENGTHS
+#endif
+
+/* This is a C fragement for the inside of a switch statement.
+ Each case label should return the number of characters to
+ be stripped from the start of a function's name, if that
+ name starts with the indicated character. */
+#define ARM_NAME_ENCODING_LENGTHS \
+ case SHORT_CALL_FLAG_CHAR: return 1; \
+ case LONG_CALL_FLAG_CHAR: return 1; \
+ case '*': return 1; \
+ SUBTARGET_NAME_ENCODING_LENGTHS
+
+/* This has to be handled by a function because more than part of the
+ ARM backend uses function name prefixes to encode attributes. */
+#undef STRIP_NAME_ENCODING
+#define STRIP_NAME_ENCODING(VAR, SYMBOL_NAME) \
+ (VAR) = arm_strip_name_encoding (SYMBOL_NAME)
+
+/* This is how to output a reference to a user-level label named NAME.
+ `assemble_name' uses this. */
+#undef ASM_OUTPUT_LABELREF
+#define ASM_OUTPUT_LABELREF(FILE, NAME) \
+ asm_fprintf (FILE, "%U%s", arm_strip_name_encoding (NAME))
+
+/* If we are referencing a function that is weak then encode a long call
+ flag in the function name, otherwise if the function is static or
+ or known to be defined in this file then encode a short call flag.
+ This macro is used inside the ENCODE_SECTION macro. */
+#define ARM_ENCODE_CALL_TYPE(decl) \
+ if (TREE_CODE (decl) == FUNCTION_DECL) \
+ { \
+ if (DECL_WEAK (decl)) \
+ arm_encode_call_attribute (decl, LONG_CALL_FLAG_CHAR); \
+ else if (! TREE_PUBLIC (decl)) \
+ arm_encode_call_attribute (decl, SHORT_CALL_FLAG_CHAR); \
+ } \
/* Symbols in the text segment can be accessed without indirecting via the
constant pool; it may take an extra binary operation, but this is still
? TREE_CST_RTL (decl) : DECL_RTL (decl)); \
SYMBOL_REF_FLAG (XEXP (rtl, 0)) = 1; \
} \
+ ARM_ENCODE_CALL_TYPE (decl) \
+}
+#else
+#define ENCODE_SECTION_INFO(decl) \
+{ \
+ ARM_ENCODE_CALL_TYPE (decl) \
}
#endif
+#define ARM_DECLARE_FUNCTION_SIZE(STREAM, NAME, DECL) \
+ arm_encode_call_attribute (DECL, SHORT_CALL_FLAG_CHAR)
+
/* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
and check its validity for a certain class.
We have two alternate definitions for each of them.
The symbol REG_OK_STRICT causes the latter definition to be used. */
#ifndef REG_OK_STRICT
-/* Nonzero if X is a hard reg that can be used as a base reg
- or if it is a pseudo reg. */
-#define REG_OK_FOR_BASE_P(X) \
- (REGNO (X) < 16 || REGNO (X) >= FIRST_PSEUDO_REGISTER \
- || REGNO (X) == FRAME_POINTER_REGNUM || REGNO (X) == ARG_POINTER_REGNUM)
+#define ARM_REG_OK_FOR_BASE_P(X) \
+ (REGNO (X) <= LAST_ARM_REGNUM \
+ || REGNO (X) >= FIRST_PSEUDO_REGISTER \
+ || REGNO (X) == FRAME_POINTER_REGNUM \
+ || REGNO (X) == ARG_POINTER_REGNUM)
-/* Nonzero if X is a hard reg that can be used as an index
- or if it is a pseudo reg. */
-#define REG_OK_FOR_INDEX_P(X) \
- REG_OK_FOR_BASE_P(X)
+#define THUMB_REG_MODE_OK_FOR_BASE_P(X, MODE) \
+ (REGNO (X) <= LAST_LO_REGNUM \
+ || REGNO (X) >= FIRST_PSEUDO_REGISTER \
+ || (GET_MODE_SIZE (MODE) >= 4 \
+ && (REGNO (X) == STACK_POINTER_REGNUM \
+ || (X) == hard_frame_pointer_rtx \
+ || (X) == arg_pointer_rtx)))
-#define REG_OK_FOR_PRE_POST_P(X) \
- (REGNO (X) < 16 || REGNO (X) >= FIRST_PSEUDO_REGISTER \
- || REGNO (X) == FRAME_POINTER_REGNUM || REGNO (X) == ARG_POINTER_REGNUM)
+#else /* REG_OK_STRICT */
-#else
+#define ARM_REG_OK_FOR_BASE_P(X) \
+ ARM_REGNO_OK_FOR_BASE_P (REGNO (X))
-/* Nonzero if X is a hard reg that can be used as a base reg. */
-#define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
+#define THUMB_REG_MODE_OK_FOR_BASE_P(X, MODE) \
+ THUMB_REGNO_MODE_OK_FOR_BASE_P (REGNO (X), MODE)
-/* Nonzero if X is a hard reg that can be used as an index. */
-#define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X))
+#endif /* REG_OK_STRICT */
-#define REG_OK_FOR_PRE_POST_P(X) \
- (REGNO (X) < 16 || (unsigned) reg_renumber[REGNO (X)] < 16 \
- || REGNO (X) == FRAME_POINTER_REGNUM || REGNO (X) == ARG_POINTER_REGNUM \
- || (unsigned) reg_renumber[REGNO (X)] == FRAME_POINTER_REGNUM \
- || (unsigned) reg_renumber[REGNO (X)] == ARG_POINTER_REGNUM)
+/* Now define some helpers in terms of the above. */
+
+#define REG_MODE_OK_FOR_BASE_P(X, MODE) \
+ (TARGET_THUMB \
+ ? THUMB_REG_MODE_OK_FOR_BASE_P (X, MODE) \
+ : ARM_REG_OK_FOR_BASE_P (X))
+
+#define ARM_REG_OK_FOR_INDEX_P(X) ARM_REG_OK_FOR_BASE_P (X)
+
+/* For Thumb, a valid index register is anything that can be used in
+ a byte load instruction. */
+#define THUMB_REG_OK_FOR_INDEX_P(X) THUMB_REG_MODE_OK_FOR_BASE_P (X, QImode)
+
+/* Nonzero if X is a hard reg that can be used as an index
+ or if it is a pseudo reg. On the Thumb, the stack pointer
+ is not suitable. */
+#define REG_OK_FOR_INDEX_P(X) \
+ (TARGET_THUMB \
+ ? THUMB_REG_OK_FOR_INDEX_P (X) \
+ : ARM_REG_OK_FOR_INDEX_P (X))
-#endif
\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.
- The other macros defined here are used only in GO_IF_LEGITIMATE_ADDRESS. */
-#define BASE_REGISTER_RTX_P(X) \
- (GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X))
+ The other macros defined here are used only in GO_IF_LEGITIMATE_ADDRESS. */
+
+/* --------------------------------arm version----------------------------- */
+#define ARM_BASE_REGISTER_RTX_P(X) \
+ (GET_CODE (X) == REG && ARM_REG_OK_FOR_BASE_P (X))
-#define INDEX_REGISTER_RTX_P(X) \
- (GET_CODE (X) == REG && REG_OK_FOR_INDEX_P (X))
+#define ARM_INDEX_REGISTER_RTX_P(X) \
+ (GET_CODE (X) == REG && ARM_REG_OK_FOR_INDEX_P (X))
/* A C statement (sans semicolon) to jump to LABEL for legitimate index RTXs
used by the macro GO_IF_LEGITIMATE_ADDRESS. Floating point indices can
only be small constants. */
-#define GO_IF_LEGITIMATE_INDEX(MODE, BASE_REGNO, INDEX, LABEL) \
- do \
- { \
- HOST_WIDE_INT range; \
- enum rtx_code code = GET_CODE (INDEX); \
- \
- if (TARGET_HARD_FLOAT && GET_MODE_CLASS (MODE) == MODE_FLOAT) \
- { \
- if (code == CONST_INT && INTVAL (INDEX) < 1024 \
- && INTVAL (INDEX) > -1024 \
- && (INTVAL (INDEX) & 3) == 0) \
- goto LABEL; \
- } \
- else \
- { \
- if (INDEX_REGISTER_RTX_P (INDEX) && GET_MODE_SIZE (MODE) <= 4) \
- goto LABEL; \
- if (GET_MODE_SIZE (MODE) <= 4 && code == MULT \
- && (! arm_arch4 || (MODE) != HImode)) \
- { \
- rtx xiop0 = XEXP (INDEX, 0); \
- rtx xiop1 = XEXP (INDEX, 1); \
- if (INDEX_REGISTER_RTX_P (xiop0) \
- && power_of_two_operand (xiop1, SImode)) \
- goto LABEL; \
- if (INDEX_REGISTER_RTX_P (xiop1) \
- && power_of_two_operand (xiop0, SImode)) \
- goto LABEL; \
- } \
- if (GET_MODE_SIZE (MODE) <= 4 \
- && (code == LSHIFTRT || code == ASHIFTRT \
- || code == ASHIFT || code == ROTATERT) \
- && (! arm_arch4 || (MODE) != HImode)) \
- { \
- rtx op = XEXP (INDEX, 1); \
- if (INDEX_REGISTER_RTX_P (XEXP (INDEX, 0)) \
- && GET_CODE (op) == CONST_INT && INTVAL (op) > 0 \
- && INTVAL (op) <= 31) \
- goto LABEL; \
- } \
- /* NASTY: Since this limits the addressing of unsigned byte loads */ \
- range = ((MODE) == HImode || (MODE) == QImode) \
- ? (arm_arch4 ? 256 : 4095) : 4096; \
- if (code == CONST_INT && INTVAL (INDEX) < range \
- && INTVAL (INDEX) > -range) \
- goto LABEL; \
- } \
- } \
+#define ARM_GO_IF_LEGITIMATE_INDEX(MODE, BASE_REGNO, INDEX, LABEL) \
+ do \
+ { \
+ HOST_WIDE_INT range; \
+ enum rtx_code code = GET_CODE (INDEX); \
+ \
+ if (TARGET_HARD_FLOAT && GET_MODE_CLASS (MODE) == MODE_FLOAT) \
+ { \
+ if (code == CONST_INT && INTVAL (INDEX) < 1024 \
+ && INTVAL (INDEX) > -1024 \
+ && (INTVAL (INDEX) & 3) == 0) \
+ goto LABEL; \
+ } \
+ else \
+ { \
+ if (ARM_INDEX_REGISTER_RTX_P (INDEX) \
+ && GET_MODE_SIZE (MODE) <= 4) \
+ goto LABEL; \
+ if (GET_MODE_SIZE (MODE) <= 4 && code == MULT \
+ && (! arm_arch4 || (MODE) != HImode)) \
+ { \
+ rtx xiop0 = XEXP (INDEX, 0); \
+ rtx xiop1 = XEXP (INDEX, 1); \
+ if (ARM_INDEX_REGISTER_RTX_P (xiop0) \
+ && power_of_two_operand (xiop1, SImode)) \
+ goto LABEL; \
+ if (ARM_INDEX_REGISTER_RTX_P (xiop1) \
+ && power_of_two_operand (xiop0, SImode)) \
+ goto LABEL; \
+ } \
+ if (GET_MODE_SIZE (MODE) <= 4 \
+ && (code == LSHIFTRT || code == ASHIFTRT \
+ || code == ASHIFT || code == ROTATERT) \
+ && (! arm_arch4 || (MODE) != HImode)) \
+ { \
+ rtx op = XEXP (INDEX, 1); \
+ if (ARM_INDEX_REGISTER_RTX_P (XEXP (INDEX, 0)) \
+ && GET_CODE (op) == CONST_INT && INTVAL (op) > 0 \
+ && INTVAL (op) <= 31) \
+ goto LABEL; \
+ } \
+ /* NASTY: Since this limits the addressing of unsigned \
+ byte loads. */ \
+ range = ((MODE) == HImode || (MODE) == QImode) \
+ ? (arm_arch4 ? 256 : 4095) : 4096; \
+ if (code == CONST_INT && INTVAL (INDEX) < range \
+ && INTVAL (INDEX) > -range) \
+ goto LABEL; \
+ } \
+ } \
while (0)
-/* Jump to LABEL if X is a valid address RTX. This must also take
- REG_OK_STRICT into account when deciding about valid registers, but it uses
- the above macros so we are in luck. Allow REG, REG+REG, REG+INDEX,
- INDEX+REG, REG-INDEX, and non floating SYMBOL_REF to the constant pool.
- Allow REG-only and AUTINC-REG if handling TImode or HImode. Other symbol
- refs must be forced though a static cell to ensure addressability. */
-#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \
+/* Jump to LABEL if X is a valid address RTX. This must take
+ REG_OK_STRICT into account when deciding about valid registers.
+
+ Allow REG, REG+REG, REG+INDEX, INDEX+REG, REG-INDEX, and non
+ floating SYMBOL_REF to the constant pool. Allow REG-only and
+ AUTINC-REG if handling TImode or HImode. Other symbol refs must be
+ forced though a static cell to ensure addressability. */
+#define ARM_GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \
{ \
- if (BASE_REGISTER_RTX_P (X)) \
+ if (ARM_BASE_REGISTER_RTX_P (X)) \
goto LABEL; \
else if ((GET_CODE (X) == POST_INC || GET_CODE (X) == PRE_DEC) \
&& GET_CODE (XEXP (X, 0)) == REG \
- && REG_OK_FOR_PRE_POST_P (XEXP (X, 0))) \
+ && ARM_REG_OK_FOR_BASE_P (XEXP (X, 0))) \
goto LABEL; \
else if (GET_MODE_SIZE (MODE) >= 4 && reload_completed \
&& (GET_CODE (X) == LABEL_REF \
else if ((MODE) == TImode) \
; \
else if ((MODE) == DImode || (TARGET_SOFT_FLOAT && (MODE) == DFmode)) \
- { \
- if (GET_CODE (X) == PLUS && BASE_REGISTER_RTX_P (XEXP (X, 0)) \
- && GET_CODE (XEXP (X, 1)) == CONST_INT) \
- { \
- HOST_WIDE_INT val = INTVAL (XEXP (X, 1)); \
+ { \
+ if (GET_CODE (X) == PLUS && ARM_BASE_REGISTER_RTX_P (XEXP (X, 0)) \
+ && GET_CODE (XEXP (X, 1)) == CONST_INT) \
+ { \
+ HOST_WIDE_INT val = INTVAL (XEXP (X, 1)); \
if (val == 4 || val == -4 || val == -8) \
goto LABEL; \
} \
} \
else if (GET_CODE (X) == PLUS) \
{ \
- rtx xop0 = XEXP(X,0); \
- rtx xop1 = XEXP(X,1); \
+ rtx xop0 = XEXP (X, 0); \
+ rtx xop1 = XEXP (X, 1); \
\
- if (BASE_REGISTER_RTX_P (xop0)) \
- GO_IF_LEGITIMATE_INDEX (MODE, REGNO (xop0), xop1, LABEL); \
- else if (BASE_REGISTER_RTX_P (xop1)) \
- GO_IF_LEGITIMATE_INDEX (MODE, REGNO (xop1), xop0, LABEL); \
+ if (ARM_BASE_REGISTER_RTX_P (xop0)) \
+ ARM_GO_IF_LEGITIMATE_INDEX (MODE, REGNO (xop0), xop1, LABEL); \
+ else if (ARM_BASE_REGISTER_RTX_P (xop1)) \
+ ARM_GO_IF_LEGITIMATE_INDEX (MODE, REGNO (xop1), xop0, LABEL); \
} \
/* Reload currently can't handle MINUS, so disable this for now */ \
/* else if (GET_CODE (X) == MINUS) \
rtx xop0 = XEXP (X,0); \
rtx xop1 = XEXP (X,1); \
\
- if (BASE_REGISTER_RTX_P (xop0)) \
- GO_IF_LEGITIMATE_INDEX (MODE, -1, xop1, LABEL); \
+ if (ARM_BASE_REGISTER_RTX_P (xop0)) \
+ ARM_GO_IF_LEGITIMATE_INDEX (MODE, -1, xop1, LABEL); \
} */ \
else if (GET_MODE_CLASS (MODE) != MODE_FLOAT \
&& GET_CODE (X) == SYMBOL_REF \
else if ((GET_CODE (X) == PRE_INC || GET_CODE (X) == POST_DEC) \
&& (GET_MODE_SIZE (MODE) <= 4) \
&& GET_CODE (XEXP (X, 0)) == REG \
- && REG_OK_FOR_PRE_POST_P (XEXP (X, 0))) \
+ && ARM_REG_OK_FOR_BASE_P (XEXP (X, 0))) \
goto LABEL; \
}
+
+/* ---------------------thumb version----------------------------------*/
+#define THUMB_LEGITIMATE_OFFSET(MODE, VAL) \
+ (GET_MODE_SIZE (MODE) == 1 ? ((unsigned HOST_WIDE_INT) (VAL) < 32) \
+ : GET_MODE_SIZE (MODE) == 2 ? ((unsigned HOST_WIDE_INT) (VAL) < 64 \
+ && ((VAL) & 1) == 0) \
+ : ((VAL) >= 0 && ((VAL) + GET_MODE_SIZE (MODE)) <= 128 \
+ && ((VAL) & 3) == 0))
+
+/* The AP may be eliminated to either the SP or the FP, so we use the
+ least common denominator, e.g. SImode, and offsets from 0 to 64. */
+
+/* ??? Verify whether the above is the right approach. */
+
+/* ??? Also, the FP may be eliminated to the SP, so perhaps that
+ needs special handling also. */
+
+/* ??? Look at how the mips16 port solves this problem. It probably uses
+ better ways to solve some of these problems. */
+
+/* Although it is not incorrect, we don't accept QImode and HImode
+ addresses based on the frame pointer or arg pointer until the
+ reload pass starts. This is so that eliminating such addresses
+ into stack based ones won't produce impossible code. */
+#define THUMB_GO_IF_LEGITIMATE_ADDRESS(MODE, X, WIN) \
+{ \
+/* ??? Not clear if this is right. Experiment. */ \
+ if (GET_MODE_SIZE (MODE) < 4 \
+ && ! (reload_in_progress || reload_completed) \
+ && ( reg_mentioned_p (frame_pointer_rtx, X) \
+ || reg_mentioned_p (arg_pointer_rtx, X) \
+ || reg_mentioned_p (virtual_incoming_args_rtx, X) \
+ || reg_mentioned_p (virtual_outgoing_args_rtx, X) \
+ || reg_mentioned_p (virtual_stack_dynamic_rtx, X) \
+ || reg_mentioned_p (virtual_stack_vars_rtx, X))) \
+ ; \
+ /* Accept any base register. SP only in SImode or larger. */ \
+ else if (GET_CODE (X) == REG \
+ && THUMB_REG_MODE_OK_FOR_BASE_P (X, MODE)) \
+ goto WIN; \
+ /* This is PC relative data before MACHINE_DEPENDENT_REORG runs. */ \
+ else if (GET_MODE_SIZE (MODE) >= 4 && CONSTANT_P (X) \
+ && CONSTANT_POOL_ADDRESS_P (X) && ! flag_pic) \
+ goto WIN; \
+ /* This is PC relative data after MACHINE_DEPENDENT_REORG runs. */ \
+ else if (GET_MODE_SIZE (MODE) >= 4 && reload_completed \
+ && (GET_CODE (X) == LABEL_REF \
+ || (GET_CODE (X) == CONST \
+ && GET_CODE (XEXP (X, 0)) == PLUS \
+ && GET_CODE (XEXP (XEXP (X, 0), 0)) == LABEL_REF \
+ && GET_CODE (XEXP (XEXP (X, 0), 1)) == CONST_INT))) \
+ goto WIN; \
+ /* Post-inc indexing only supported for SImode and larger. */ \
+ else if (GET_CODE (X) == POST_INC && GET_MODE_SIZE (MODE) >= 4 \
+ && GET_CODE (XEXP (X, 0)) == REG \
+ && THUMB_REG_OK_FOR_INDEX_P (XEXP (X, 0))) \
+ goto WIN; \
+ else if (GET_CODE (X) == PLUS) \
+ { \
+ /* REG+REG address can be any two index registers. */ \
+ /* We disallow FRAME+REG addressing since we know that FRAME \
+ will be replaced with STACK, and SP relative addressing only \
+ permits SP+OFFSET. */ \
+ if (GET_MODE_SIZE (MODE) <= 4 \
+ && GET_CODE (XEXP (X, 0)) == REG \
+ && GET_CODE (XEXP (X, 1)) == REG \
+ && XEXP (X, 0) != frame_pointer_rtx \
+ && XEXP (X, 1) != frame_pointer_rtx \
+ && XEXP (X, 0) != virtual_stack_vars_rtx \
+ && XEXP (X, 1) != virtual_stack_vars_rtx \
+ && THUMB_REG_OK_FOR_INDEX_P (XEXP (X, 0)) \
+ && THUMB_REG_OK_FOR_INDEX_P (XEXP (X, 1))) \
+ goto WIN; \
+ /* REG+const has 5-7 bit offset for non-SP registers. */ \
+ else if (GET_CODE (XEXP (X, 0)) == REG \
+ && (THUMB_REG_OK_FOR_INDEX_P (XEXP (X, 0)) \
+ || XEXP (X, 0) == arg_pointer_rtx) \
+ && GET_CODE (XEXP (X, 1)) == CONST_INT \
+ && THUMB_LEGITIMATE_OFFSET (MODE, INTVAL (XEXP (X, 1)))) \
+ goto WIN; \
+ /* REG+const has 10 bit offset for SP, but only SImode and \
+ larger is supported. */ \
+ /* ??? Should probably check for DI/DFmode overflow here \
+ just like GO_IF_LEGITIMATE_OFFSET does. */ \
+ else if (GET_CODE (XEXP (X, 0)) == REG \
+ && REGNO (XEXP (X, 0)) == STACK_POINTER_REGNUM \
+ && GET_MODE_SIZE (MODE) >= 4 \
+ && GET_CODE (XEXP (X, 1)) == CONST_INT \
+ && ((unsigned HOST_WIDE_INT) INTVAL (XEXP (X, 1)) \
+ + GET_MODE_SIZE (MODE)) <= 1024 \
+ && (INTVAL (XEXP (X, 1)) & 3) == 0) \
+ goto WIN; \
+ else if (GET_CODE (XEXP (X, 0)) == REG \
+ && REGNO (XEXP (X, 0)) == FRAME_POINTER_REGNUM \
+ && GET_MODE_SIZE (MODE) >= 4 \
+ && GET_CODE (XEXP (X, 1)) == CONST_INT \
+ && (INTVAL (XEXP (X, 1)) & 3) == 0) \
+ goto WIN; \
+ } \
+ else if (GET_MODE_CLASS (MODE) != MODE_FLOAT \
+ && GET_CODE (X) == SYMBOL_REF \
+ && CONSTANT_POOL_ADDRESS_P (X) \
+ && ! (flag_pic \
+ && symbol_mentioned_p (get_pool_constant (X)))) \
+ goto WIN; \
+}
+
+/* ------------------------------------------------------------------- */
+#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, WIN) \
+ if (TARGET_ARM) \
+ ARM_GO_IF_LEGITIMATE_ADDRESS (MODE, X, WIN) \
+ else /* if (TARGET_THUMB) */ \
+ THUMB_GO_IF_LEGITIMATE_ADDRESS (MODE, X, WIN)
+/* ------------------------------------------------------------------- */
\f
/* Try machine-dependent ways of modifying an illegitimate address
to be legitimate. If we find one, return the new, valid address.
On the ARM, try to convert [REG, #BIGCONST]
into ADD BASE, REG, #UPPERCONST and [BASE, #VALIDCONST],
where VALIDCONST == 0 in case of TImode. */
-#define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN) \
+#define ARM_LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN) \
{ \
if (GET_CODE (X) == PLUS) \
{ \
xop0 = force_reg (SImode, xop0); \
if (CONSTANT_P (xop1) && ! symbol_mentioned_p (xop1)) \
xop1 = force_reg (SImode, xop1); \
- if (BASE_REGISTER_RTX_P (xop0) && GET_CODE (xop1) == CONST_INT) \
+ if (ARM_BASE_REGISTER_RTX_P (xop0) \
+ && GET_CODE (xop1) == CONST_INT) \
{ \
HOST_WIDE_INT n, low_n; \
rtx base_reg, val; \
goto WIN; \
}
+#define THUMB_LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN) \
+ if (flag_pic) \
+ (X) = legitimize_pic_address (OLDX, MODE, NULL_RTX);
+
+#define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN) \
+ if (TARGET_ARM) \
+ ARM_LEGITIMIZE_ADDRESS (X, OLDX, MODE, WIN) \
+ else \
+ THUMB_LEGITIMIZE_ADDRESS (X, OLDX, MODE, WIN)
+
/* Go to LABEL if ADDR (a legitimate address expression)
has an effect that depends on the machine mode it is used for. */
-#define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL) \
+#define ARM_GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL) \
{ \
- if (GET_CODE(ADDR) == PRE_DEC || GET_CODE(ADDR) == POST_DEC \
- || GET_CODE(ADDR) == PRE_INC || GET_CODE(ADDR) == POST_INC) \
+ if ( GET_CODE (ADDR) == PRE_DEC || GET_CODE (ADDR) == POST_DEC \
+ || GET_CODE (ADDR) == PRE_INC || GET_CODE (ADDR) == POST_INC) \
goto 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)
\f
+
/* Specify the machine mode that this machine uses
for the index in the tablejump instruction. */
-#define CASE_VECTOR_MODE SImode
+#define CASE_VECTOR_MODE Pmode
/* Define as C expression which evaluates to nonzero if the tablejump
instruction expects the table to contain offsets from the address of the
in one reasonably fast instruction. */
#define MOVE_MAX 4
+#undef MOVE_RATIO
+#define MOVE_RATIO (arm_is_xscale ? 4 : 2)
+
/* Define if operations between registers always perform the operation
on the full register even if a narrower mode is specified. */
#define WORD_REGISTER_OPERATIONS
be the code that says which one of the two operations is implicitly
done, NIL if none. */
#define LOAD_EXTEND_OP(MODE) \
- ((arm_arch4 || (MODE) == QImode) ? ZERO_EXTEND \
- : ((BYTES_BIG_ENDIAN && (MODE) == HImode) ? SIGN_EXTEND : NIL))
+ (TARGET_THUMB ? ZERO_EXTEND : \
+ ((arm_arch4 || (MODE) == QImode) ? ZERO_EXTEND \
+ : ((BYTES_BIG_ENDIAN && (MODE) == HImode) ? SIGN_EXTEND : NIL)))
/* Define this if zero-extension is slow (more than one real instruction).
On the ARM, it is more than one instruction only if not fetching from
/* 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
/* #define SHIFT_COUNT_TRUNCATED 1 */
/* All integers have the same format so truncation is easy. */
-#define TRULY_NOOP_TRUNCATION(OUTPREC,INPREC) 1
+#define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
/* Calling from registers is a massive pain. */
#define NO_FUNCTION_CSE 1
#define Pmode SImode
#define FUNCTION_MODE Pmode
-/* The structure type of the machine dependent info field of insns
- No uses for this yet. */
-/* #define INSN_MACHINE_INFO struct machine_info */
-
-/* The relative costs of various types of constants. Note that cse.c defines
- REG = 1, SUBREG = 2, any node = (2 + sum of subnodes). */
-#define CONST_COSTS(RTX, CODE, OUTER_CODE) \
- case CONST_INT: \
- if (const_ok_for_arm (INTVAL (RTX))) \
- return (OUTER_CODE) == SET ? 2 : -1; \
- else if (OUTER_CODE == AND \
- && const_ok_for_arm (~INTVAL (RTX))) \
- return -1; \
- else if ((OUTER_CODE == COMPARE \
- || OUTER_CODE == PLUS || OUTER_CODE == MINUS) \
- && const_ok_for_arm (-INTVAL (RTX))) \
- return -1; \
- else \
- return 5; \
- case CONST: \
- case LABEL_REF: \
- case SYMBOL_REF: \
- return 6; \
- case CONST_DOUBLE: \
- if (const_double_rtx_ok_for_fpu (RTX)) \
- return (OUTER_CODE) == SET ? 2 : -1; \
- else if (((OUTER_CODE) == COMPARE || (OUTER_CODE) == PLUS) \
- && neg_const_double_rtx_ok_for_fpu (RTX)) \
- return -1; \
- return(7);
-
-#define ARM_FRAME_RTX(X) \
- ((X) == frame_pointer_rtx || (X) == stack_pointer_rtx \
+#define ARM_FRAME_RTX(X) \
+ ( (X) == frame_pointer_rtx || (X) == stack_pointer_rtx \
|| (X) == arg_pointer_rtx)
#define DEFAULT_RTX_COSTS(X, CODE, OUTER_CODE) \
- return arm_rtx_costs (X, CODE);
+ return arm_rtx_costs (X, CODE, OUTER_CODE);
/* Moves to and from memory are quite expensive */
-#define MEMORY_MOVE_COST(MODE,CLASS,IN) 10
-
+#define MEMORY_MOVE_COST(M, CLASS, IN) \
+ (TARGET_ARM ? 10 : \
+ ((GET_MODE_SIZE (M) < 4 ? 8 : 2 * GET_MODE_SIZE (M)) \
+ * (CLASS == LO_REGS ? 1 : 2)))
+
/* All address computations that can be done are free, but rtx cost returns
the same for practically all of them. So we weight the different types
of address here in the order (most pref first):
PRE/POST_INC/DEC, SHIFT or NON-INT sum, INT sum, REG, MEM or LABEL. */
-#define ADDRESS_COST(X) \
+#define ARM_ADDRESS_COST(X) \
(10 - ((GET_CODE (X) == MEM || GET_CODE (X) == LABEL_REF \
|| GET_CODE (X) == SYMBOL_REF) \
? 0 \
? 1 : 0)) \
: 4)))))
+#define THUMB_ADDRESS_COST(X) \
+ ((GET_CODE (X) == REG \
+ || (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 0)) == REG \
+ && GET_CODE (XEXP (X, 1)) == CONST_INT)) \
+ ? 1 : 2)
+
+#define ADDRESS_COST(X) \
+ (TARGET_ARM ? ARM_ADDRESS_COST (X) : THUMB_ADDRESS_COST (X))
-
/* Try to generate sequences that don't involve branches, we can then use
conditional instructions */
-#define BRANCH_COST 4
-
-/* A C statement to update the variable COST based on the relationship
- between INSN that is dependent on DEP through dependence LINK. */
-#define ADJUST_COST(INSN,LINK,DEP,COST) \
- (COST) = arm_adjust_cost ((INSN), (LINK), (DEP), (COST))
+#define BRANCH_COST \
+ (TARGET_ARM ? 4 : (optimize > 1 ? 1 : 0))
\f
/* Position Independent Code. */
/* We decide which register to use based on the compilation options and
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 ()
+#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) \
- (! symbol_mentioned_p (X) \
- && (! CONSTANT_POOL_ADDRESS_P (X) \
- || ! symbol_mentioned_p (get_pool_constant (X))))
+#define LEGITIMATE_PIC_OPERAND_P(X) \
+ ( ! symbol_mentioned_p (X) \
+ && ! label_mentioned_p (X) \
+ && (! CONSTANT_POOL_ADDRESS_P (X) \
+ || ( ! symbol_mentioned_p (get_pool_constant (X)) \
+ && ! label_mentioned_p (get_pool_constant (X)))))
/* We need to know when we are making a constant pool; this determines
whether data needs to be in the GOT or can be referenced via a GOT
offset. */
extern int making_const_table;
-
\f
+/* Handle pragmas for compatibility with Intel's compilers. */
+#define REGISTER_TARGET_PRAGMAS(PFILE) do { \
+ cpp_register_pragma (PFILE, 0, "long_calls", arm_pr_long_calls); \
+ cpp_register_pragma (PFILE, 0, "no_long_calls", arm_pr_no_long_calls); \
+ cpp_register_pragma (PFILE, 0, "long_calls_off", arm_pr_long_calls_off); \
+} while (0)
+
/* Condition code information. */
/* Given a comparison code (EQ, NE, etc.) and the first operand of a COMPARE,
return the mode to be used for the comparison.
CC_Zmode should be used if only the Z flag is set correctly
CCmode should be used otherwise. */
-#define EXTRA_CC_MODES CC_NOOVmode, CC_Zmode, CC_SWPmode, \
- CCFPmode, CCFPEmode, CC_DNEmode, CC_DEQmode, CC_DLEmode, \
- CC_DLTmode, CC_DGEmode, CC_DGTmode, CC_DLEUmode, CC_DLTUmode, \
- CC_DGEUmode, CC_DGTUmode, CC_Cmode
-
-#define EXTRA_CC_NAMES "CC_NOOV", "CC_Z", "CC_SWP", "CCFP", "CCFPE", \
- "CC_DNE", "CC_DEQ", "CC_DLE", "CC_DLT", "CC_DGE", "CC_DGT", "CC_DLEU", \
- "CC_DLTU", "CC_DGEU", "CC_DGTU", "CC_C"
-
-#define SELECT_CC_MODE(OP,X,Y) arm_select_cc_mode ((OP), (X), (Y))
+#define EXTRA_CC_MODES \
+ CC(CC_NOOVmode, "CC_NOOV") \
+ CC(CC_Zmode, "CC_Z") \
+ CC(CC_SWPmode, "CC_SWP") \
+ CC(CCFPmode, "CCFP") \
+ CC(CCFPEmode, "CCFPE") \
+ CC(CC_DNEmode, "CC_DNE") \
+ CC(CC_DEQmode, "CC_DEQ") \
+ CC(CC_DLEmode, "CC_DLE") \
+ CC(CC_DLTmode, "CC_DLT") \
+ CC(CC_DGEmode, "CC_DGE") \
+ CC(CC_DGTmode, "CC_DGT") \
+ CC(CC_DLEUmode, "CC_DLEU") \
+ CC(CC_DLTUmode, "CC_DLTU") \
+ CC(CC_DGEUmode, "CC_DGEU") \
+ CC(CC_DGTUmode, "CC_DGTU") \
+ CC(CC_Cmode, "CC_C")
+
+#define SELECT_CC_MODE(OP, X, Y) arm_select_cc_mode (OP, X, Y)
#define REVERSIBLE_CC_MODE(MODE) ((MODE) != CCFPEmode)
#define STORE_FLAG_VALUE 1
-/* Define the information needed to generate branch insns. This is
- stored from the compare operation. Note that we can't use "rtx" here
- since it hasn't been defined! */
-
-extern struct rtx_def * arm_compare_op0;
-extern struct rtx_def * arm_compare_op1;
-
-/* Define the codes that are matched by predicates in arm.c */
-#define PREDICATE_CODES \
- {"s_register_operand", {SUBREG, REG}}, \
- {"f_register_operand", {SUBREG, REG}}, \
- {"arm_add_operand", {SUBREG, REG, CONST_INT}}, \
- {"fpu_add_operand", {SUBREG, REG, CONST_DOUBLE}}, \
- {"arm_rhs_operand", {SUBREG, REG, CONST_INT}}, \
- {"fpu_rhs_operand", {SUBREG, REG, CONST_DOUBLE}}, \
- {"arm_not_operand", {SUBREG, REG, CONST_INT}}, \
- {"offsettable_memory_operand", {MEM}}, \
- {"bad_signed_byte_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}}, \
- {"soft_df_operand", {SUBREG, REG, CONST_DOUBLE, MEM}}, \
- {"load_multiple_operation", {PARALLEL}}, \
- {"store_multiple_operation", {PARALLEL}}, \
- {"equality_operator", {EQ, NE}}, \
- {"arm_rhsm_operand", {SUBREG, REG, CONST_INT, MEM}}, \
- {"const_shift_operand", {CONST_INT}}, \
- {"index_operand", {SUBREG, REG, CONST_INT}}, \
- {"reg_or_int_operand", {SUBREG, REG, CONST_INT}}, \
- {"multi_register_push", {PARALLEL}}, \
- {"cc_register", {REG}}, \
- {"dominant_cc_register", {REG}},
-
\f
/* Gcc puts the pool in the wrong place for ARM, since we can only
load addresses a limited distance around the pc. We do some
special munging to move the constant pool values to the correct
point in the code. */
-#define MACHINE_DEPENDENT_REORG(INSN) arm_reorg ((INSN))
+#define MACHINE_DEPENDENT_REORG(INSN) \
+ arm_reorg (INSN); \
-/* The pool is empty, since we have moved everything into the code. */
-#define ASM_OUTPUT_SPECIAL_POOL_ENTRY(FILE,X,MODE,ALIGN,LABELNO,JUMPTO) \
- goto JUMPTO
+#undef ASM_APP_OFF
+#define ASM_APP_OFF (TARGET_THUMB ? "\t.code\t16\n" : "")
/* Output an internal label definition. */
#ifndef ASM_OUTPUT_INTERNAL_LABEL
do \
{ \
char * s = (char *) alloca (40 + strlen (PREFIX)); \
- extern int arm_target_label, arm_ccfsm_state; \
- extern rtx arm_target_insn; \
\
if (arm_ccfsm_state == 3 && arm_target_label == (NUM) \
&& !strcmp (PREFIX, "L")) \
#endif
/* Output a push or a pop instruction (only used when profiling). */
-#define ASM_OUTPUT_REG_PUSH(STREAM,REGNO) \
- fprintf (STREAM,"\tstmfd\t%ssp!,{%s%s}\n", \
- REGISTER_PREFIX, REGISTER_PREFIX, reg_names [REGNO])
-
-#define ASM_OUTPUT_REG_POP(STREAM,REGNO) \
- fprintf (STREAM,"\tldmfd\t%ssp!,{%s%s}\n", \
- REGISTER_PREFIX, REGISTER_PREFIX, reg_names [REGNO])
-
-/* Target characters. */
-#define TARGET_BELL 007
-#define TARGET_BS 010
-#define TARGET_TAB 011
-#define TARGET_NEWLINE 012
-#define TARGET_VT 013
-#define TARGET_FF 014
-#define TARGET_CR 015
+#define ASM_OUTPUT_REG_PUSH(STREAM, REGNO) \
+ if (TARGET_ARM) \
+ asm_fprintf (STREAM,"\tstmfd\t%r!,{%r}\n", \
+ STACK_POINTER_REGNUM, REGNO); \
+ else \
+ asm_fprintf (STREAM, "\tpush {%r}\n", REGNO)
+
+
+#define ASM_OUTPUT_REG_POP(STREAM, REGNO) \
+ if (TARGET_ARM) \
+ asm_fprintf (STREAM, "\tldmfd\t%r!,{%r}\n", \
+ STACK_POINTER_REGNUM, REGNO); \
+ else \
+ asm_fprintf (STREAM, "\tpop {%r}\n", REGNO)
+
+/* This is how to output a label which precedes a jumptable. Since
+ Thumb instructions are 2 bytes, we may need explicit alignment here. */
+#undef ASM_OUTPUT_CASE_LABEL
+#define ASM_OUTPUT_CASE_LABEL(FILE, PREFIX, NUM, JUMPTABLE) \
+ do \
+ { \
+ if (TARGET_THUMB) \
+ ASM_OUTPUT_ALIGN (FILE, 2); \
+ ASM_OUTPUT_INTERNAL_LABEL (FILE, PREFIX, NUM); \
+ } \
+ while (0)
+
+#define ARM_DECLARE_FUNCTION_NAME(STREAM, NAME, DECL) \
+ do \
+ { \
+ if (TARGET_THUMB) \
+ { \
+ if (is_called_in_ARM_mode (DECL)) \
+ fprintf (STREAM, "\t.code 32\n") ; \
+ else \
+ fprintf (STREAM, "\t.thumb_func\n") ; \
+ } \
+ if (TARGET_POKE_FUNCTION_NAME) \
+ arm_poke_function_name (STREAM, (char *) NAME); \
+ } \
+ while (0)
+
+/* For aliases of functions we use .thumb_set instead. */
+#define ASM_OUTPUT_DEF_FROM_DECLS(FILE, DECL1, DECL2) \
+ do \
+ { \
+ const char *const LABEL1 = XSTR (XEXP (DECL_RTL (decl), 0), 0); \
+ const char *const LABEL2 = IDENTIFIER_POINTER (DECL2); \
+ \
+ if (TARGET_THUMB && TREE_CODE (DECL1) == FUNCTION_DECL) \
+ { \
+ fprintf (FILE, "\t.thumb_set "); \
+ assemble_name (FILE, LABEL1); \
+ fprintf (FILE, ","); \
+ assemble_name (FILE, LABEL2); \
+ fprintf (FILE, "\n"); \
+ } \
+ else \
+ ASM_OUTPUT_DEF (FILE, LABEL1, LABEL2); \
+ } \
+ while (0)
+
+#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
+/* To support -falign-* switches we need to use .p2align so
+ that alignment directives in code sections will be padded
+ with no-op instructions, rather than zeroes. */
+#define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \
+ if ((LOG) != 0) \
+ { \
+ if ((MAX_SKIP) == 0) \
+ fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
+ else \
+ fprintf ((FILE), "\t.p2align %d,,%d\n", \
+ (LOG), (MAX_SKIP)); \
+ }
+#endif
\f
/* Only perform branch elimination (by making instructions conditional) if
we're optimising. Otherwise it's of no use anyway. */
-#define FINAL_PRESCAN_INSN(INSN, OPVEC, NOPERANDS) \
- if (optimize) \
- arm_final_prescan_insn (INSN)
+#define FINAL_PRESCAN_INSN(INSN, OPVEC, NOPERANDS) \
+ if (TARGET_ARM && optimize) \
+ arm_final_prescan_insn (INSN); \
+ else if (TARGET_THUMB) \
+ thumb_final_prescan_insn (INSN)
#define PRINT_OPERAND_PUNCT_VALID_P(CODE) \
- ((CODE) == '?' || (CODE) == '|' || (CODE) == '@')
+ (CODE == '@' || CODE == '|' \
+ || (TARGET_ARM && (CODE == '?')) \
+ || (TARGET_THUMB && (CODE == '_')))
+
/* Output an operand of an instruction. */
#define PRINT_OPERAND(STREAM, X, CODE) \
arm_print_operand (STREAM, X, CODE)
-#define ARM_SIGN_EXTEND(x) ((HOST_WIDE_INT) \
- (HOST_BITS_PER_WIDE_INT <= 32 ? (x) \
- : (((x) & (unsigned HOST_WIDE_INT) 0xffffffff) | \
- (((x) & (unsigned HOST_WIDE_INT) 0x80000000) \
- ? ((~ (HOST_WIDE_INT) 0) \
- & ~ (unsigned HOST_WIDE_INT) 0xffffffff) \
+#define ARM_SIGN_EXTEND(x) ((HOST_WIDE_INT) \
+ (HOST_BITS_PER_WIDE_INT <= 32 ? (unsigned HOST_WIDE_INT) (x) \
+ : ((((unsigned HOST_WIDE_INT)(x)) & (unsigned HOST_WIDE_INT) 0xffffffff) |\
+ ((((unsigned HOST_WIDE_INT)(x)) & (unsigned HOST_WIDE_INT) 0x80000000) \
+ ? ((~ (unsigned HOST_WIDE_INT) 0) \
+ & ~ (unsigned HOST_WIDE_INT) 0xffffffff) \
: 0))))
/* Output the address of an operand. */
-#define PRINT_OPERAND_ADDRESS(STREAM,X) \
-{ \
- int is_minus = GET_CODE (X) == MINUS; \
- \
- if (GET_CODE (X) == REG) \
- fprintf (STREAM, "[%s%s, #0]", REGISTER_PREFIX, \
- reg_names[REGNO (X)]); \
- else if (GET_CODE (X) == PLUS || is_minus) \
- { \
- rtx base = XEXP (X, 0); \
- rtx index = XEXP (X, 1); \
- char * base_reg_name; \
- HOST_WIDE_INT offset = 0; \
- if (GET_CODE (base) != REG) \
- { \
- /* Ensure that BASE is a register (one of them must be). */ \
- rtx temp = base; \
- base = index; \
- index = temp; \
- } \
- base_reg_name = reg_names[REGNO (base)]; \
- switch (GET_CODE (index)) \
- { \
- case CONST_INT: \
- offset = INTVAL (index); \
- if (is_minus) \
- offset = -offset; \
- fprintf (STREAM, "[%s%s, #%d]", REGISTER_PREFIX, \
- base_reg_name, offset); \
- break; \
- \
- case REG: \
- fprintf (STREAM, "[%s%s, %s%s%s]", REGISTER_PREFIX, \
- base_reg_name, is_minus ? "-" : "", \
- REGISTER_PREFIX, reg_names[REGNO (index)] ); \
- break; \
- \
- case MULT: \
- case ASHIFTRT: \
- case LSHIFTRT: \
- case ASHIFT: \
- case ROTATERT: \
- { \
- fprintf (STREAM, "[%s%s, %s%s%s", REGISTER_PREFIX, \
- base_reg_name, is_minus ? "-" : "", REGISTER_PREFIX,\
- reg_names[REGNO (XEXP (index, 0))]); \
- arm_print_operand (STREAM, index, 'S'); \
- fputs ("]", STREAM); \
- break; \
- } \
- \
- default: \
- abort(); \
- } \
- } \
- else if (GET_CODE (X) == PRE_INC || GET_CODE (X) == POST_INC \
- || GET_CODE (X) == PRE_DEC || GET_CODE (X) == POST_DEC) \
- { \
- extern int output_memory_reference_mode; \
- \
- if (GET_CODE (XEXP (X, 0)) != REG) \
- abort (); \
- \
- if (GET_CODE (X) == PRE_DEC || GET_CODE (X) == PRE_INC) \
- fprintf (STREAM, "[%s%s, #%s%d]!", REGISTER_PREFIX, \
- reg_names[REGNO (XEXP (X, 0))], \
- GET_CODE (X) == PRE_DEC ? "-" : "", \
- GET_MODE_SIZE (output_memory_reference_mode)); \
- else \
- fprintf (STREAM, "[%s%s], #%s%d", REGISTER_PREFIX, \
- reg_names[REGNO (XEXP (X, 0))], \
- GET_CODE (X) == POST_DEC ? "-" : "", \
- GET_MODE_SIZE (output_memory_reference_mode)); \
- } \
- else output_addr_const (STREAM, X); \
+#define ARM_PRINT_OPERAND_ADDRESS(STREAM, X) \
+{ \
+ int is_minus = GET_CODE (X) == MINUS; \
+ \
+ if (GET_CODE (X) == REG) \
+ asm_fprintf (STREAM, "[%r, #0]", REGNO (X)); \
+ else if (GET_CODE (X) == PLUS || is_minus) \
+ { \
+ rtx base = XEXP (X, 0); \
+ rtx index = XEXP (X, 1); \
+ HOST_WIDE_INT offset = 0; \
+ if (GET_CODE (base) != REG) \
+ { \
+ /* Ensure that BASE is a register */ \
+ /* (one of them must be). */ \
+ rtx temp = base; \
+ base = index; \
+ index = temp; \
+ } \
+ switch (GET_CODE (index)) \
+ { \
+ case CONST_INT: \
+ offset = INTVAL (index); \
+ if (is_minus) \
+ offset = -offset; \
+ asm_fprintf (STREAM, "[%r, #%d]", \
+ REGNO (base), offset); \
+ break; \
+ \
+ case REG: \
+ asm_fprintf (STREAM, "[%r, %s%r]", \
+ REGNO (base), is_minus ? "-" : "", \
+ REGNO (index)); \
+ break; \
+ \
+ case MULT: \
+ case ASHIFTRT: \
+ case LSHIFTRT: \
+ case ASHIFT: \
+ case ROTATERT: \
+ { \
+ asm_fprintf (STREAM, "[%r, %s%r", \
+ REGNO (base), is_minus ? "-" : "", \
+ REGNO (XEXP (index, 0))); \
+ arm_print_operand (STREAM, index, 'S'); \
+ fputs ("]", STREAM); \
+ break; \
+ } \
+ \
+ default: \
+ abort(); \
+ } \
+ } \
+ else if ( GET_CODE (X) == PRE_INC || GET_CODE (X) == POST_INC\
+ || GET_CODE (X) == PRE_DEC || GET_CODE (X) == POST_DEC)\
+ { \
+ extern int output_memory_reference_mode; \
+ \
+ if (GET_CODE (XEXP (X, 0)) != REG) \
+ abort (); \
+ \
+ if (GET_CODE (X) == PRE_DEC || GET_CODE (X) == PRE_INC) \
+ asm_fprintf (STREAM, "[%r, #%s%d]!", \
+ REGNO (XEXP (X, 0)), \
+ GET_CODE (X) == PRE_DEC ? "-" : "", \
+ GET_MODE_SIZE (output_memory_reference_mode));\
+ else \
+ asm_fprintf (STREAM, "[%r], #%s%d", \
+ REGNO (XEXP (X, 0)), \
+ GET_CODE (X) == POST_DEC ? "-" : "", \
+ GET_MODE_SIZE (output_memory_reference_mode));\
+ } \
+ else output_addr_const (STREAM, X); \
}
-/* Handles PIC addr specially */
-#define OUTPUT_INT_ADDR_CONST(STREAM,X) \
+#define THUMB_PRINT_OPERAND_ADDRESS(STREAM, X) \
+{ \
+ if (GET_CODE (X) == REG) \
+ asm_fprintf (STREAM, "[%r]", REGNO (X)); \
+ else if (GET_CODE (X) == POST_INC) \
+ asm_fprintf (STREAM, "%r!", REGNO (XEXP (X, 0))); \
+ else if (GET_CODE (X) == PLUS) \
+ { \
+ if (GET_CODE (XEXP (X, 1)) == CONST_INT) \
+ asm_fprintf (STREAM, "[%r, #%d]", \
+ REGNO (XEXP (X, 0)), \
+ (int) INTVAL (XEXP (X, 1))); \
+ else \
+ asm_fprintf (STREAM, "[%r, %r]", \
+ REGNO (XEXP (X, 0)), \
+ REGNO (XEXP (X, 1))); \
+ } \
+ else \
+ output_addr_const (STREAM, X); \
+}
+
+#define PRINT_OPERAND_ADDRESS(STREAM, X) \
+ if (TARGET_ARM) \
+ ARM_PRINT_OPERAND_ADDRESS (STREAM, X) \
+ else \
+ THUMB_PRINT_OPERAND_ADDRESS (STREAM, X)
+
+#define OUTPUT_INT_ADDR_CONST(STREAM, X) \
{ \
- if (flag_pic && GET_CODE (X) == CONST && is_pic (X)) \
- { \
- output_addr_const (STREAM, XEXP (XEXP (XEXP (X, 0), 0), 0)); \
- fputs (" - (", STREAM); \
- output_addr_const (STREAM, XEXP (XEXP (XEXP (X, 0), 1), 0)); \
- fputs (")", STREAM); \
- } \
- else output_addr_const (STREAM, X); \
+ output_addr_const (STREAM, X); \
\
/* Mark symbols as position independent. We only do this in the \
.text segment, not in the .data segment. */ \
- if (NEED_PLT_GOT && flag_pic && making_const_table && \
+ if (NEED_GOT_RELOC && flag_pic && making_const_table && \
(GET_CODE (X) == SYMBOL_REF || GET_CODE (X) == LABEL_REF)) \
{ \
if (GET_CODE (X) == SYMBOL_REF && CONSTANT_POOL_ADDRESS_P (X)) \
do \
{ \
int mi_delta = (DELTA); \
- char * mi_op = mi_delta < 0 ? "sub" : "add"; \
+ const char *const mi_op = mi_delta < 0 ? "sub" : "add"; \
int shift = 0; \
int this_regno = (aggregate_value_p (TREE_TYPE (TREE_TYPE (FUNCTION))) \
? 1 : 0); \
- if (mi_delta < 0) mi_delta = -mi_delta; \
+ if (mi_delta < 0) \
+ mi_delta = - mi_delta; \
while (mi_delta != 0) \
{ \
- if (mi_delta & (3 << shift) == 0) \
+ if ((mi_delta & (3 << shift)) == 0) \
shift += 2; \
else \
{ \
- fprintf (FILE, "\t%s\t%s%s, %s%s, #%d\n", \
- mi_op, REGISTER_PREFIX, reg_names[this_regno], \
- REGISTER_PREFIX, reg_names[this_regno], \
- mi_delta & (0xff << shift)); \
+ asm_fprintf (FILE, "\t%s\t%r, %r, #%d\n", \
+ mi_op, this_regno, this_regno, \
+ mi_delta & (0xff << shift)); \
mi_delta &= ~(0xff << shift); \
shift += 8; \
} \
} \
fputs ("\tb\t", FILE); \
assemble_name (FILE, XSTR (XEXP (DECL_RTL (FUNCTION), 0), 0)); \
- if (NEED_PLT_GOT) \
+ if (NEED_PLT_RELOC) \
fputs ("(PLT)", FILE); \
fputc ('\n', FILE); \
} \
/* A C expression whose value is RTL representing the value of the return
address for the frame COUNT steps up from the current frame. */
-#define RETURN_ADDR_RTX(COUNT, FRAME) \
- ((COUNT == 0) \
- ? gen_rtx_MEM (Pmode, plus_constant (FRAME, -4)) \
- : NULL_RTX)
+#define RETURN_ADDR_RTX(COUNT, FRAME) \
+ arm_return_addr (COUNT, FRAME)
+
+/* Mask of the bits in the PC that contain the real return address
+ when running in 26-bit mode. */
+#define RETURN_ADDR_MASK26 (0x03fffffc)
+
+/* Pick up the return address upon entry to a procedure. Used for
+ dwarf2 unwind information. This also enables the table driven
+ mechanism. */
+#define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (Pmode, LR_REGNUM)
+#define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (LR_REGNUM)
/* Used to mask out junk bits from the return address, such as
processor state, interrupt status, condition codes and the like. */
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 (0x03fffffc)) : (GEN_INT (0xffffffff)))
-
-/* The remainder of this file is only needed for building the compiler
- itself, not for the collateral. */
-#ifdef HAVE_CONFIG_H
-
-/* Prototypes for functions in arm.c */
-
-#ifdef BUFSIZ /* stdio.h has been included, ok to use FILE * */
-#define STDIO_PROTO(ARGS) PROTO (ARGS)
-#else
-#define STDIO_PROTO(ARGS) ()
-#endif
-
-#ifndef TREE_CODE
-union tree_node;
-#define Tree union tree_node *
-#else
-#define Tree tree
-#endif
-
-#ifndef RTX_CODE
-struct rtx_def;
-#define Rtx struct rtx_def *
-#else
-#define Rtx rtx
-#endif
-
-#ifndef HOST_WIDE_INT
-#include "hwint.h"
-#endif
-#define Hint HOST_WIDE_INT
+ ((!TARGET_APCS_32) ? (GEN_INT (RETURN_ADDR_MASK26)) \
+ : (GEN_INT ((unsigned long)0xffffffff)))
-#ifndef HAVE_MACHINE_MODES
-#include "machmode.h"
-#endif
-#define Mmode enum machine_mode
+\f
+/* Define the codes that are matched by predicates in arm.c */
+#define PREDICATE_CODES \
+ {"s_register_operand", {SUBREG, REG}}, \
+ {"arm_hard_register_operand", {REG}}, \
+ {"f_register_operand", {SUBREG, REG}}, \
+ {"arm_add_operand", {SUBREG, REG, CONST_INT}}, \
+ {"fpu_add_operand", {SUBREG, REG, CONST_DOUBLE}}, \
+ {"fpu_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}}, \
+ {"offsettable_memory_operand", {MEM}}, \
+ {"bad_signed_byte_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}}, \
+ {"dominant_cc_register", {REG}},
-#ifdef RTX_CODE
-#define RTX_CODE_PROTO(ARGS) PROTO (ARGS)
-#else
-#define RTX_CODE_PROTO(ARGS) ()
-#endif
-#define Rcode enum rtx_code
-
-void arm_override_options PROTO ((void));
-int use_return_insn PROTO ((int));
-int const_ok_for_arm PROTO ((Hint));
-int arm_split_constant RTX_CODE_PROTO ((Rcode, Mmode, Hint, Rtx, Rtx, int));
-Rcode arm_canonicalize_comparison RTX_CODE_PROTO ((Rcode, Rtx *));
-int arm_return_in_memory PROTO ((Tree));
-int legitimate_pic_operand_p PROTO ((Rtx));
-Rtx legitimize_pic_address PROTO ((Rtx, Mmode, Rtx));
-int is_pic PROTO ((Rtx));
-void arm_finalize_pic PROTO ((void));
-int arm_rtx_costs RTX_CODE_PROTO ((Rtx, Rcode));
-int arm_adjust_cost PROTO ((Rtx, Rtx, Rtx, int));
-int const_double_rtx_ok_for_fpu PROTO ((Rtx));
-int neg_const_double_rtx_ok_for_fpu PROTO ((Rtx));
-int s_register_operand PROTO ((Rtx, Mmode));
-int f_register_operand PROTO ((Rtx, Mmode));
-int reg_or_int_operand PROTO ((Rtx, Mmode));
-int reload_memory_operand PROTO ((Rtx, Mmode));
-int arm_rhs_operand PROTO ((Rtx, Mmode));
-int arm_rhsm_operand PROTO ((Rtx, Mmode));
-int arm_add_operand PROTO ((Rtx, Mmode));
-int arm_not_operand PROTO ((Rtx, Mmode));
-int offsettable_memory_operand PROTO ((Rtx, Mmode));
-int alignable_memory_operand PROTO ((Rtx, Mmode));
-int bad_signed_byte_operand PROTO ((Rtx, Mmode));
-int fpu_rhs_operand PROTO ((Rtx, Mmode));
-int fpu_add_operand PROTO ((Rtx, Mmode));
-int power_of_two_operand PROTO ((Rtx, Mmode));
-int di_operand PROTO ((Rtx, Mmode));
-int soft_df_operand PROTO ((Rtx, Mmode));
-int index_operand PROTO ((Rtx, Mmode));
-int const_shift_operand PROTO ((Rtx, Mmode));
-int shiftable_operator PROTO ((Rtx, Mmode));
-int shift_operator PROTO ((Rtx, Mmode));
-int equality_operator PROTO ((Rtx, Mmode));
-int minmax_operator PROTO ((Rtx, Mmode));
-int cc_register PROTO ((Rtx, Mmode));
-int dominant_cc_register PROTO ((Rtx, Mmode));
-int symbol_mentioned_p PROTO ((Rtx));
-int label_mentioned_p PROTO ((Rtx));
-Rcode minmax_code PROTO ((Rtx));
-int adjacent_mem_locations PROTO ((Rtx, Rtx));
-int load_multiple_operation PROTO ((Rtx, Mmode));
-int store_multiple_operation PROTO ((Rtx, Mmode));
-int load_multiple_sequence PROTO ((Rtx *, int, int *, int *, Hint *));
-char * emit_ldm_seq PROTO ((Rtx *, int));
-int store_multiple_sequence PROTO ((Rtx *, int, int *, int *, Hint *));
-char * emit_stm_seq PROTO ((Rtx *, int));
-int arm_valid_machine_decl_attribute PROTO ((Tree, Tree, Tree));
-Rtx arm_gen_load_multiple PROTO ((int, int, Rtx, int, int, int, int, int));
-Rtx arm_gen_store_multiple PROTO ((int, int, Rtx, int, int, int, int, int));
-int arm_gen_movstrqi PROTO ((Rtx *));
-Rtx gen_rotated_half_load PROTO ((Rtx));
-Mmode arm_select_cc_mode RTX_CODE_PROTO ((Rcode, Rtx, Rtx));
-Rtx gen_compare_reg RTX_CODE_PROTO ((Rcode, Rtx, Rtx, int));
-void arm_reload_in_hi PROTO ((Rtx *));
-void arm_reload_out_hi PROTO ((Rtx *));
-void arm_reorg PROTO ((Rtx));
-char * fp_immediate_constant PROTO ((Rtx));
-void print_multi_reg STDIO_PROTO ((FILE *, char *, int, int));
-char * output_call PROTO ((Rtx *));
-char * output_call_mem PROTO ((Rtx *));
-char * output_mov_long_double_fpu_from_arm PROTO ((Rtx *));
-char * output_mov_long_double_arm_from_fpu PROTO ((Rtx *));
-char * output_mov_long_double_arm_from_arm PROTO ((Rtx *));
-char * output_mov_double_fpu_from_arm PROTO ((Rtx *));
-char * output_mov_double_arm_from_fpu PROTO ((Rtx *));
-char * output_move_double PROTO ((Rtx *));
-char * output_mov_immediate PROTO ((Rtx *));
-char * output_add_immediate PROTO ((Rtx *));
-char * arithmetic_instr PROTO ((Rtx, int));
-void output_ascii_pseudo_op STDIO_PROTO ((FILE *, unsigned char *, int));
-char * output_return_instruction PROTO ((Rtx, int, int));
-int arm_volatile_func PROTO ((void));
-void arm_poke_function_name STDIO_PROTO ((FILE *, char *));
-void output_func_prologue STDIO_PROTO ((FILE *, int));
-void output_func_epilogue STDIO_PROTO ((FILE *, int));
-void arm_expand_prologue PROTO ((void));
-void arm_print_operand STDIO_PROTO ((FILE *, Rtx, int));
-void arm_final_prescan_insn PROTO ((Rtx));
-int short_branch PROTO ((int, int));
-void assemble_align PROTO((int)); /* Used in arm.md, but defined in output.c */
-int multi_register_push PROTO ((Rtx, Mmode));
-#ifdef AOF_ASSEMBLER
-Rtx aof_pic_entry PROTO ((Rtx));
-void aof_dump_pic_table STDIO_PROTO ((FILE *));
-char * aof_text_section PROTO ((void));
-char * aof_data_section PROTO ((void));
-void aof_add_import PROTO ((char *));
-void aof_delete_import PROTO ((char *));
-void aof_dump_imports STDIO_PROTO ((FILE *));
-#endif
-#endif /* HAVE_CONFIG_H */
+/* 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",
-#endif /* __ARM_H__ */
+enum arm_builtins
+{
+ ARM_BUILTIN_CLZ,
+ ARM_BUILTIN_PREFETCH,
+ ARM_BUILTIN_MAX
+};
+#endif /* ! GCC_ARM_H */
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