/* Definitions of target machine for GNU compiler. MIPS version.
Copyright (C) 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998
- 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
Contributed by A. Lichnewsky (lich@inria.inria.fr).
Changed by Michael Meissner (meissner@osf.org).
64 bit r4000 support by Ian Lance Taylor (ian@cygnus.com) and
Brendan Eich (brendan@microunity.com).
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC is free software; you can redistribute it and/or modify
+GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
-GNU CC is distributed in the hope that it will be useful,
+GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING. If not, write to
+along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* Standard GCC variables that we reference. */
-extern char *asm_file_name;
-extern char call_used_regs[];
-extern int may_call_alloca;
-extern char **save_argv;
extern int target_flags;
/* MIPS external variables defined in mips.c. */
PROCESSOR_R5000,
PROCESSOR_R5400,
PROCESSOR_R5500,
+ PROCESSOR_R7000,
PROCESSOR_R8000,
+ PROCESSOR_R9000,
PROCESSOR_SB1,
PROCESSOR_SR71000
};
-/* Recast the cpu class to be the cpu attribute. */
-#define mips_cpu_attr ((enum attr_cpu)mips_tune)
-
/* Which ABI to use. ABI_32 (original 32, or o32), ABI_N32 (n32),
ABI_64 (n64) are all defined by SGI. ABI_O64 is o32 extended
to work on a 64 bit machine. */
#define ABI_EABI 3
#define ABI_O64 4
-/* Whether to emit abicalls code sequences or not. */
-
-enum mips_abicalls_type {
- MIPS_ABICALLS_NO,
- MIPS_ABICALLS_YES
-};
-
-/* Recast the abicalls class to be the abicalls attribute. */
-#define mips_abicalls_attr ((enum attr_abicalls)mips_abicalls)
-
-/* Which type of block move to do (whether or not the last store is
- split out so it can fill a branch delay slot). */
-
-enum block_move_type {
- BLOCK_MOVE_NORMAL, /* generate complete block move */
- BLOCK_MOVE_NOT_LAST, /* generate all but last store */
- BLOCK_MOVE_LAST /* generate just the last store */
-};
-
/* Information about one recognized processor. Defined here for the
benefit of TARGET_CPU_CPP_BUILTINS. */
struct mips_cpu_info {
extern char mips_print_operand_punct[256]; /* print_operand punctuation chars */
extern const char *current_function_file; /* filename current function is in */
extern int num_source_filenames; /* current .file # */
-extern int inside_function; /* != 0 if inside of a function */
-extern int ignore_line_number; /* != 0 if we are to ignore next .loc */
-extern int file_in_function_warning; /* warning given about .file in func */
-extern int sdb_label_count; /* block start/end next label # */
-extern int sdb_begin_function_line; /* Starting Line of current function */
extern int mips_section_threshold; /* # bytes of data/sdata cutoff */
-/* extern unsigned HOST_WIDE_INT g_switch_value; */ /* value of the -G xx switch */
-extern int g_switch_set; /* whether -G xx was passed. */
extern int sym_lineno; /* sgi next label # for each stmt */
extern int set_noreorder; /* # of nested .set noreorder's */
extern int set_nomacro; /* # of nested .set nomacro's */
extern enum cmp_type branch_type; /* what type of branch to use */
extern enum processor_type mips_arch; /* which cpu to codegen for */
extern enum processor_type mips_tune; /* which cpu to schedule for */
-extern enum mips_abicalls_type mips_abicalls;/* for svr4 abi pic calls */
extern int mips_isa; /* architectural level */
-extern int mips16; /* whether generating mips16 code */
+extern int mips_abi; /* which ABI to use */
extern int mips16_hard_float; /* mips16 without -msoft-float */
extern int mips_entry; /* generate entry/exit for mips16 */
extern const char *mips_arch_string; /* for -march=<xxx> */
extern const char *mips_tune_string; /* for -mtune=<xxx> */
extern const char *mips_isa_string; /* for -mips{1,2,3,4} */
extern const char *mips_abi_string; /* for -mabi={32,n32,64} */
-extern const char *mips_entry_string; /* for -mentry */
-extern const char *mips_no_mips16_string;/* for -mno-mips16 */
extern const char *mips_cache_flush_func;/* for -mflush-func= and -mno-flush-func */
extern int mips_string_length; /* length of strings for mips16 */
extern const struct mips_cpu_info mips_cpu_info_table[];
extern const struct mips_cpu_info *mips_arch_info;
extern const struct mips_cpu_info *mips_tune_info;
-/* Functions to change what output section we are using. */
-extern void sdata_section PARAMS ((void));
-extern void sbss_section PARAMS ((void));
-
/* Macros to silence warnings about numbers being signed in traditional
C and unsigned in ISO C when compiled on 32-bit hosts. */
#define MASK_INT64 0x00000001 /* ints are 64 bits */
#define MASK_LONG64 0x00000002 /* longs are 64 bits */
#define MASK_SPLIT_ADDR 0x00000004 /* Address splitting is enabled. */
-#define MASK_GPOPT 0x00000008 /* Optimize for global pointer */
+#define MASK_NO_FUSED_MADD 0x00000008 /* Don't generate floating point
+ multiply-add operations. */
#define MASK_GAS 0x00000010 /* Gas used instead of MIPS as */
#define MASK_NAME_REGS 0x00000020 /* Use MIPS s/w reg name convention */
#define MASK_EXPLICIT_RELOCS 0x00000040 /* Use relocation operators. */
#define MASK_SOFT_FLOAT 0x00000100 /* software floating point */
#define MASK_FLOAT64 0x00000200 /* fp registers are 64 bits */
#define MASK_ABICALLS 0x00000400 /* emit .abicalls/.cprestore/.cpload */
-#define MASK_UNUSED1 0x00000800 /* Unused Mask. */
+#define MASK_XGOT 0x00000800 /* emit big-got PIC */
#define MASK_LONG_CALLS 0x00001000 /* Always call through a register */
#define MASK_64BIT 0x00002000 /* Use 64 bit GP registers and insns */
#define MASK_EMBEDDED_PIC 0x00004000 /* Generate embedded PIC code */
#define MASK_MIPS16 0x00100000 /* Generate mips16 code */
#define MASK_NO_CHECK_ZERO_DIV \
0x00200000 /* divide by zero checking */
-#define MASK_CHECK_RANGE_DIV \
- 0x00400000 /* divide result range checking */
+#define MASK_BRANCHLIKELY 0x00400000 /* Generate Branch Likely
+ instructions. */
#define MASK_UNINIT_CONST_IN_RODATA \
0x00800000 /* Store uninitialized
consts in rodata */
-#define MASK_NO_FUSED_MADD 0x01000000 /* Don't generate floating point
- multiply-add operations. */
-#define MASK_BRANCHLIKELY 0x02000000 /* Generate Branch Likely
- instructions. */
+#define MASK_FIX_SB1 0x01000000 /* Work around SB-1 errata. */
/* Debug switches, not documented */
#define MASK_DEBUG 0 /* unused */
/* Reg. Naming in .s ($21 vs. $a0) */
#define TARGET_NAME_REGS (target_flags & MASK_NAME_REGS)
- /* Optimize for Sdata/Sbss */
-#define TARGET_GP_OPT (target_flags & MASK_GPOPT)
-
/* call memcpy instead of inline code */
#define TARGET_MEMCPY (target_flags & MASK_MEMCPY)
/* .abicalls, etc from Pyramid V.4 */
#define TARGET_ABICALLS (target_flags & MASK_ABICALLS)
+#define TARGET_XGOT (target_flags & MASK_XGOT)
/* software floating point */
#define TARGET_SOFT_FLOAT (target_flags & MASK_SOFT_FLOAT)
#define TARGET_4300_MUL_FIX (target_flags & MASK_4300_MUL_FIX)
-#define TARGET_NO_CHECK_ZERO_DIV (target_flags & MASK_NO_CHECK_ZERO_DIV)
-#define TARGET_CHECK_RANGE_DIV (target_flags & MASK_CHECK_RANGE_DIV)
+#define TARGET_CHECK_ZERO_DIV (!(target_flags & MASK_NO_CHECK_ZERO_DIV))
#define TARGET_BRANCHLIKELY (target_flags & MASK_BRANCHLIKELY)
+#define TARGET_FIX_SB1 (target_flags & MASK_FIX_SB1)
/* True if we should use NewABI-style relocation operators for
symbolic addresses. This is never true for mips16 code,
#define TARGET_MIPS5KC (mips_arch == PROCESSOR_5KC)
#define TARGET_MIPS5400 (mips_arch == PROCESSOR_R5400)
#define TARGET_MIPS5500 (mips_arch == PROCESSOR_R5500)
+#define TARGET_MIPS7000 (mips_arch == PROCESSOR_R7000)
+#define TARGET_MIPS9000 (mips_arch == PROCESSOR_R9000)
#define TARGET_SB1 (mips_arch == PROCESSOR_SB1)
#define TARGET_SR71K (mips_arch == PROCESSOR_SR71000)
#define TUNE_MIPS5400 (mips_tune == PROCESSOR_R5400)
#define TUNE_MIPS5500 (mips_tune == PROCESSOR_R5500)
#define TUNE_MIPS6000 (mips_tune == PROCESSOR_R6000)
+#define TUNE_MIPS7000 (mips_tune == PROCESSOR_R7000)
+#define TUNE_MIPS9000 (mips_tune == PROCESSOR_R9000)
#define TUNE_SB1 (mips_tune == PROCESSOR_SB1)
#define TUNE_SR71K (mips_tune == PROCESSOR_SR71000)
#define TARGET_NEWABI (mips_abi == ABI_N32 || mips_abi == ABI_64)
+/* IRIX specific stuff. */
+#define TARGET_IRIX 0
+#define TARGET_IRIX5 0
+#define TARGET_SGI_O32_AS (TARGET_IRIX && mips_abi == ABI_32 && !TARGET_GAS)
+
/* Define preprocessor macros for the -march and -mtune options.
PREFIX is either _MIPS_ARCH or _MIPS_TUNE, INFO is the selected
processor. If INFO's canonical name is "foo", define PREFIX to
/* We do this here because __mips is defined below \
and so we can't use builtin_define_std. */ \
if (!flag_iso) \
- builtin_define ("mips"); \
+ builtin_define ("mips"); \
\
/* Treat _R3000 and _R4000 like register-size defines, \
which is how they've historically been used. */ \
builtin_define ("_R3000"); \
} \
if (TARGET_FLOAT64) \
- builtin_define ("__mips_fpr=64"); \
+ builtin_define ("__mips_fpr=64"); \
else \
- builtin_define ("__mips_fpr=32"); \
+ builtin_define ("__mips_fpr=32"); \
\
if (TARGET_MIPS16) \
- builtin_define ("__mips16"); \
+ builtin_define ("__mips16"); \
\
MIPS_CPP_SET_PROCESSOR ("_MIPS_ARCH", mips_arch_info); \
MIPS_CPP_SET_PROCESSOR ("_MIPS_TUNE", mips_tune_info); \
} \
\
if (TARGET_HARD_FLOAT) \
- builtin_define ("__mips_hard_float"); \
+ builtin_define ("__mips_hard_float"); \
else if (TARGET_SOFT_FLOAT) \
- builtin_define ("__mips_soft_float"); \
+ builtin_define ("__mips_soft_float"); \
\
if (TARGET_SINGLE_FLOAT) \
- builtin_define ("__mips_single_float"); \
+ builtin_define ("__mips_single_float"); \
\
if (TARGET_BIG_ENDIAN) \
{ \
builtin_define_std ("LANGUAGE_ASSEMBLY"); \
builtin_define ("_LANGUAGE_ASSEMBLY"); \
} \
- else if (c_language == clk_c) \
- { \
- builtin_define_std ("LANGUAGE_C"); \
- builtin_define ("_LANGUAGE_C"); \
- } \
- else if (c_language == clk_cplusplus) \
+ else if (c_dialect_cxx ()) \
{ \
builtin_define ("_LANGUAGE_C_PLUS_PLUS"); \
builtin_define ("__LANGUAGE_C_PLUS_PLUS"); \
builtin_define ("__LANGUAGE_C_PLUS_PLUS__"); \
} \
- if (flag_objc) \
+ else \
+ { \
+ builtin_define_std ("LANGUAGE_C"); \
+ builtin_define ("_LANGUAGE_C"); \
+ } \
+ if (c_dialect_objc ()) \
{ \
builtin_define ("_LANGUAGE_OBJECTIVE_C"); \
builtin_define ("__LANGUAGE_OBJECTIVE_C"); \
- /* Bizzare, but needed at least for Irix. */ \
+ /* Bizarre, but needed at least for Irix. */ \
builtin_define_std ("LANGUAGE_C"); \
builtin_define ("_LANGUAGE_C"); \
} \
N_("Use symbolic register names")}, \
{"no-rnames", -MASK_NAME_REGS, \
N_("Don't use symbolic register names")}, \
- {"gpOPT", MASK_GPOPT, \
- N_("Use GP relative sdata/sbss sections")}, \
- {"gpopt", MASK_GPOPT, \
- N_("Use GP relative sdata/sbss sections")}, \
- {"no-gpOPT", -MASK_GPOPT, \
- N_("Don't use GP relative sdata/sbss sections")}, \
- {"no-gpopt", -MASK_GPOPT, \
- N_("Don't use GP relative sdata/sbss sections")}, \
+ {"gpOPT", 0, \
+ N_("Use GP relative sdata/sbss sections (now ignored)")}, \
+ {"gpopt", 0, \
+ N_("Use GP relative sdata/sbss sections (now ignored)")}, \
+ {"no-gpOPT", 0, \
+ N_("Don't use GP relative sdata/sbss sections (now ignored)")}, \
+ {"no-gpopt", 0, \
+ N_("Don't use GP relative sdata/sbss sections (now ignored)")}, \
{"stats", 0, \
N_("Output compiler statistics (now ignored)")}, \
{"no-stats", 0, \
N_("Work around early 4300 hardware bug")}, \
{"no-fix4300", -MASK_4300_MUL_FIX, \
N_("Don't work around early 4300 hardware bug")}, \
+ {"fix-sb1", MASK_FIX_SB1, \
+ N_("Work around errata for early SB-1 revision 2 cores")}, \
+ {"no-fix-sb1", -MASK_FIX_SB1, \
+ N_("Don't work around errata for early SB-1 revision 2 cores")}, \
{"check-zero-division",-MASK_NO_CHECK_ZERO_DIV, \
N_("Trap on integer divide by zero")}, \
{"no-check-zero-division", MASK_NO_CHECK_ZERO_DIV, \
N_("Don't trap on integer divide by zero")}, \
- {"check-range-division",MASK_CHECK_RANGE_DIV, \
- N_("Trap on integer divide overflow")}, \
- {"no-check-range-division",-MASK_CHECK_RANGE_DIV, \
- N_("Don't trap on integer divide overflow")}, \
{ "branch-likely", MASK_BRANCHLIKELY, \
N_("Use Branch Likely instructions, overriding default for arch")}, \
{ "no-branch-likely", -MASK_BRANCHLIKELY, \
N_("Use NewABI-style %reloc() assembly operators")}, \
{"no-explicit-relocs", -MASK_EXPLICIT_RELOCS, \
N_("Use assembler macros instead of relocation operators")}, \
+ {"ips16", MASK_MIPS16, \
+ N_("Generate mips16 code") }, \
+ {"no-mips16", -MASK_MIPS16, \
+ N_("Generate normal-mode code") }, \
+ {"xgot", MASK_XGOT, \
+ N_("Lift restrictions on GOT size") }, \
+ {"no-xgot", -MASK_XGOT, \
+ N_("Do not lift restrictions on GOT size") }, \
{"debug", MASK_DEBUG, \
NULL}, \
{"debuga", MASK_DEBUG_A, \
N_("Specify an ABI"), 0}, \
{ "ips", &mips_isa_string, \
N_("Specify a Standard MIPS ISA"), 0}, \
- { "entry", &mips_entry_string, \
- N_("Use mips16 entry/exit psuedo ops"), 0}, \
- { "no-mips16", &mips_no_mips16_string, \
- N_("Don't use MIPS16 instructions"), 0}, \
{ "no-flush-func", &mips_cache_flush_func, \
N_("Don't call any cache flush functions"), 0}, \
{ "flush-func=", &mips_cache_flush_func, \
#define GENERATE_MULT3_SI ((TARGET_MIPS3900 \
|| TARGET_MIPS5400 \
|| TARGET_MIPS5500 \
+ || TARGET_MIPS7000 \
+ || TARGET_MIPS9000 \
|| ISA_MIPS32 \
|| ISA_MIPS32R2 \
|| ISA_MIPS64) \
|| ISA_MIPS32R2 \
|| ISA_MIPS64)
-/* This is a catch all for the other new mips4 instructions: indexed load and
- indexed prefetch instructions, the FP madd and msub instructions,
- and the FP recip and recip sqrt instructions */
+/* This is a catch all for other mips4 instructions: indexed load, the
+ FP madd and msub instructions, and the FP recip and recip sqrt
+ instructions. */
#define ISA_HAS_FP4 ((ISA_MIPS4 \
|| ISA_MIPS64) \
&& !TARGET_MIPS16)
|| TARGET_SR71K \
))
-/* ISA has data prefetch instruction. */
+/* ISA has data prefetch instructions. This controls use of 'pref'. */
#define ISA_HAS_PREFETCH ((ISA_MIPS4 \
|| ISA_MIPS32 \
|| ISA_MIPS32R2 \
|| ISA_MIPS64) \
&& !TARGET_MIPS16)
+/* ISA has data indexed prefetch instructions. This controls use of
+ 'prefx', along with TARGET_HARD_FLOAT and TARGET_DOUBLE_FLOAT.
+ (prefx is a cop1x instruction, so can only be used if FP is
+ enabled.) */
+#define ISA_HAS_PREFETCHX ((ISA_MIPS4 \
+ || ISA_MIPS64) \
+ && !TARGET_MIPS16)
+
/* True if trunc.w.s and trunc.w.d are real (not synthetic)
instructions. Both require TARGET_HARD_FLOAT, and trunc.w.d
also requires TARGET_DOUBLE_FLOAT. */
#define ISA_HAS_FCMP_DELAY (mips_isa <= 3)
/* True if mflo and mfhi can be immediately followed by instructions
- which write to the HI and LO registers. Most targets require a
- two-instruction gap. */
-#define ISA_HAS_HILO_INTERLOCKS (TARGET_MIPS5500 || TARGET_SB1)
-
-/* CC1_SPEC causes -mips3 and -mips4 to set -mfp64 and -mgp64; -mips1 or
- -mips2 sets -mfp32 and -mgp32. This can be overridden by an explicit
- -mfp32, -mfp64, -mgp32 or -mgp64. -mfp64 sets MASK_FLOAT64 in
- target_flags, and -mgp64 sets MASK_64BIT.
-
- Setting MASK_64BIT in target_flags will cause gcc to assume that
- registers are 64 bits wide. int, long and void * will be 32 bit;
- this may be changed with -mint64 or -mlong64.
-
- The gen* programs link code that refers to MASK_64BIT. They don't
- actually use the information in target_flags; they just refer to
- it. */
+ which write to the HI and LO registers.
+
+ According to MIPS specifications, MIPS ISAs I, II, and III need
+ (at least) two instructions between the reads of HI/LO and
+ instructions which write them, and later ISAs do not. Contradicting
+ the MIPS specifications, some MIPS IV processor user manuals (e.g.
+ the UM for the NEC Vr5000) document needing the instructions between
+ HI/LO reads and writes, as well. Therefore, we declare only MIPS32,
+ MIPS64 and later ISAs to have the interlocks, plus any specific
+ earlier-ISA CPUs for which CPU documentation declares that the
+ instructions are really interlocked. */
+#define ISA_HAS_HILO_INTERLOCKS (ISA_MIPS32 \
+ || ISA_MIPS32R2 \
+ || ISA_MIPS64 \
+ || TARGET_MIPS5500)
\f
-/* Switch Recognition by gcc.c. Add -G xx support */
+/* Add -G xx support. */
#undef SWITCH_TAKES_ARG
#define SWITCH_TAKES_ARG(CHAR) \
(DEFAULT_SWITCH_TAKES_ARG (CHAR) || (CHAR) == 'G')
-/* Sometimes certain combinations of command options do not make sense
- on a particular target machine. You can define a macro
- `OVERRIDE_OPTIONS' to take account of this. This macro, if
- defined, is executed once just after all the command options have
- been parsed.
-
- On the MIPS, it is used to handle -G. We also use it to set up all
- of the tables referenced in the other macros. */
-
#define OVERRIDE_OPTIONS override_options ()
#define CONDITIONAL_REGISTER_USAGE mips_conditional_register_usage ()
#define SUBTARGET_TARGET_SWITCHES
-extern int mips_abi;
-
#ifndef MIPS_ABI_DEFAULT
#define MIPS_ABI_DEFAULT ABI_32
#endif
#endif
/* Beginning with gas 2.13, -mdebug must be passed to correctly handle COFF
- and stabs debugging info. */
+ debugging info. */
#if ((TARGET_CPU_DEFAULT | TARGET_DEFAULT) & MASK_GAS) != 0
/* GAS */
-#define MDEBUG_ASM_SPEC "%{!gdwarf*:-mdebug} %{gdwarf*:-no-mdebug}"
+#define MDEBUG_ASM_SPEC "%{gcoff*:-mdebug} \
+ %{!gcoff*:-no-mdebug}"
#else /* not GAS */
#define MDEBUG_ASM_SPEC ""
#endif /* not GAS */
%{membedded-pic} \
%{mabi=32:-32}%{mabi=n32:-n32}%{mabi=64:-64}%{mabi=n64:-64} \
%{mabi=eabi} %{mabi=o64} %{!mabi*: %(asm_abi_default_spec)} \
-%{mgp32} %{mgp64} %{march=*} \
+%{mgp32} %{mgp64} %{march=*} %{mxgot:-xgot} \
%(target_asm_spec) \
%(subtarget_asm_spec)"
-/* Specify to run a post-processor, mips-tfile after the assembler
- has run to stuff the mips debug information into the object file.
- This is needed because the $#!%^ MIPS assembler provides no way
- of specifying such information in the assembly file. If we are
- cross compiling, disable mips-tfile unless the user specifies
- -mmips-tfile. */
-
-#ifndef ASM_FINAL_SPEC
-#if ((TARGET_CPU_DEFAULT | TARGET_DEFAULT) & MASK_GAS) != 0
-/* GAS */
-#define ASM_FINAL_SPEC "\
-%{mmips-as: %{!mno-mips-tfile: \
- \n mips-tfile %{v*: -v} \
- %{K: -I %b.o~} \
- %{!K: %{save-temps: -I %b.o~}} \
- %{c:%W{o*}%{!o*:-o %b.o}}%{!c:-o %U.o} \
- %{.s:%i} %{!.s:%g.s}}}"
-
-#else
-/* not GAS */
-#define ASM_FINAL_SPEC "\
-%{!mgas: %{!mno-mips-tfile: \
- \n mips-tfile %{v*: -v} \
- %{K: -I %b.o~} \
- %{!K: %{save-temps: -I %b.o~}} \
- %{c:%W{o*}%{!o*:-o %b.o}}%{!c:-o %U.o} \
- %{.s:%i} %{!.s:%g.s}}}"
-
-#endif
-#endif /* ASM_FINAL_SPEC */
-
-/* Redefinition of libraries used. Mips doesn't support normal
- UNIX style profiling via calling _mcount. It does offer
- profiling that samples the PC, so do what we can... */
-
-#ifndef LIB_SPEC
-#define LIB_SPEC "%{pg:-lprof1} %{p:-lprof1} -lc"
-#endif
-
/* Extra switches sometimes passed to the linker. */
/* ??? The bestGnum will never be passed to the linker, because the gcc driver
will interpret it as a -b option. */
#endif
/* CC1_SPEC is the set of arguments to pass to the compiler proper. */
-/* Note, we will need to adjust the following if we ever find a MIPS variant
- that has 32-bit GPRs and 64-bit FPRs as well as fix all of the reload bugs
- that show up in this case. */
#ifndef CC1_SPEC
#define CC1_SPEC "\
is an initializer with a subgrouping for each command option.
Each subgrouping contains a string constant, that defines the
- specification name, and a string constant that used by the GNU CC driver
+ specification name, and a string constant that used by the GCC driver
program.
Do not define this macro if it does not need to do anything. */
#endif
\f
-/* Print subsidiary information on the compiler version in use. */
-
-#define MIPS_VERSION "[AL 1.1, MM 40]"
-
-#ifndef MACHINE_TYPE
-#define MACHINE_TYPE "BSD Mips"
-#endif
-
-#ifndef TARGET_VERSION_INTERNAL
-#define TARGET_VERSION_INTERNAL(STREAM) \
- fprintf (STREAM, " %s %s", MIPS_VERSION, MACHINE_TYPE)
-#endif
-
-#ifndef TARGET_VERSION
-#define TARGET_VERSION TARGET_VERSION_INTERNAL (stderr)
-#endif
-
-\f
-#define SDB_DEBUGGING_INFO 1 /* generate info for mips-tfile */
#define DBX_DEBUGGING_INFO 1 /* generate stabs (OSF/rose) */
#define MIPS_DEBUGGING_INFO 1 /* MIPS specific debugging info */
+#define DWARF2_DEBUGGING_INFO 1 /* dwarf2 debugging info */
-#ifndef PREFERRED_DEBUGGING_TYPE /* assume SDB_DEBUGGING_INFO */
-#define PREFERRED_DEBUGGING_TYPE SDB_DEBUG
+#ifndef PREFERRED_DEBUGGING_TYPE
+#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
#endif
/* By default, turn on GDB extensions. */
#define USER_LABEL_PREFIX ""
#endif
-/* Forward references to tags are allowed. */
-#define SDB_ALLOW_FORWARD_REFERENCES
-
-/* Unknown tags are also allowed. */
-#define SDB_ALLOW_UNKNOWN_REFERENCES
-
/* On Sun 4, this limit is 2048. We use 1500 to be safe,
since the length can run past this up to a continuation point. */
#undef DBX_CONTIN_LENGTH
/* How to renumber registers for dbx and gdb. */
#define DBX_REGISTER_NUMBER(REGNO) mips_dbx_regno[ (REGNO) ]
-/* The mapping from gcc register number to DWARF 2 CFA column number.
- This mapping does not allow for tracking register 0, since SGI's broken
- dwarf reader thinks column 0 is used for the frame address, but since
- register 0 is fixed this is not a problem. */
-#define DWARF_FRAME_REGNUM(REG) \
- (REG == GP_REG_FIRST + 31 ? DWARF_FRAME_RETURN_COLUMN : REG)
+/* The mapping from gcc register number to DWARF 2 CFA column number. */
+#define DWARF_FRAME_REGNUM(REG) (REG)
/* The DWARF 2 CFA column which tracks the return address. */
-#define DWARF_FRAME_RETURN_COLUMN (FP_REG_LAST + 1)
+#define DWARF_FRAME_RETURN_COLUMN (GP_REG_FIRST + 31)
+
+/* The DWARF 2 CFA column which tracks the return address from a
+ signal handler context. */
+#define SIGNAL_UNWIND_RETURN_COLUMN (FP_REG_LAST + 1)
/* Before the prologue, RA lives in r31. */
#define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (VOIDmode, GP_REG_FIRST + 31)
/* Describe how we implement __builtin_eh_return. */
-#define EH_RETURN_DATA_REGNO(N) ((N) < (TARGET_MIPS16 ? 2 : 4) ? (N) + GP_ARG_FIRST : INVALID_REGNUM)
+#define EH_RETURN_DATA_REGNO(N) \
+ ((N) < (TARGET_MIPS16 ? 2 : 4) ? (N) + GP_ARG_FIRST : INVALID_REGNUM)
+
#define EH_RETURN_STACKADJ_RTX gen_rtx_REG (Pmode, GP_REG_FIRST + 3)
/* Offsets recorded in opcodes are a multiple of this alignment factor.
SFmode register saves. */
#define DWARF_CIE_DATA_ALIGNMENT 4
-#define FIND_BASE_TERM(X) mips_delegitimize_address (X)
-
-#define PUT_SDB_DEF(a) \
-do { \
- fprintf (asm_out_file, "\t%s.def\t", \
- (TARGET_GAS) ? "" : "#"); \
- ASM_OUTPUT_LABELREF (asm_out_file, a); \
- fputc (';', asm_out_file); \
-} while (0)
-
-#define PUT_SDB_PLAIN_DEF(a) \
-do { \
- fprintf (asm_out_file, "\t%s.def\t.%s;", \
- (TARGET_GAS) ? "" : "#", (a)); \
-} while (0)
-
-/* For block start and end, we create labels, so that
- later we can figure out where the correct offset is.
- The normal .ent/.end serve well enough for functions,
- so those are just commented out. */
-
-#define PUT_SDB_BLOCK_START(LINE) \
-do { \
- fprintf (asm_out_file, \
- "%sLb%d:\n\t%s.begin\t%sLb%d\t%d\n", \
- LOCAL_LABEL_PREFIX, \
- sdb_label_count, \
- (TARGET_GAS) ? "" : "#", \
- LOCAL_LABEL_PREFIX, \
- sdb_label_count, \
- (LINE)); \
- sdb_label_count++; \
-} while (0)
-
-#define PUT_SDB_BLOCK_END(LINE) \
-do { \
- fprintf (asm_out_file, \
- "%sLe%d:\n\t%s.bend\t%sLe%d\t%d\n", \
- LOCAL_LABEL_PREFIX, \
- sdb_label_count, \
- (TARGET_GAS) ? "" : "#", \
- LOCAL_LABEL_PREFIX, \
- sdb_label_count, \
- (LINE)); \
- sdb_label_count++; \
-} while (0)
-
-#define PUT_SDB_FUNCTION_START(LINE)
-
-#define PUT_SDB_FUNCTION_END(LINE) \
-do { \
- ASM_OUTPUT_SOURCE_LINE (asm_out_file, LINE + sdb_begin_function_line); \
-} while (0)
-
-#define PUT_SDB_EPILOGUE_END(NAME)
-
/* Correct the offset of automatic variables and arguments. Note that
the MIPS debug format wants all automatic variables and arguments
to be in terms of the virtual frame pointer (stack pointer before
mips_debugger_offset (X, (HOST_WIDE_INT) 0)
#define DEBUGGER_ARG_OFFSET(OFFSET, X) \
mips_debugger_offset (X, (HOST_WIDE_INT) OFFSET)
-
-/* Tell collect that the object format is ECOFF */
-#define OBJECT_FORMAT_COFF /* Object file looks like COFF */
-#define EXTENDED_COFF /* ECOFF, not normal coff */
\f
/* Target machine storage layout */
-/* Define this if most significant bit is lowest numbered
- in instructions that operate on numbered bit-fields.
-*/
#define BITS_BIG_ENDIAN 0
-
-/* Define this if most significant byte of a word is the lowest numbered. */
#define BYTES_BIG_ENDIAN (TARGET_BIG_ENDIAN != 0)
-
-/* Define this if most significant word of a multiword number is the lowest. */
#define WORDS_BIG_ENDIAN (TARGET_BIG_ENDIAN != 0)
/* Define this to set the endianness to use in libgcc2.c, which can
/* The number of bytes in a double. */
#define UNITS_PER_DOUBLE (TYPE_PRECISION (double_type_node) / BITS_PER_UNIT)
-/* A C expression for the size in bits of the type `int' on the
- target machine. If you don't define this, the default is one
- word. */
-#define INT_TYPE_SIZE (TARGET_INT64 ? 64 : 32)
-
/* Tell the preprocessor the maximum size of wchar_t. */
#ifndef MAX_WCHAR_TYPE_SIZE
#ifndef WCHAR_TYPE_SIZE
#endif
#endif
-/* A C expression for the size in bits of the type `short' on the
- target machine. If you don't define this, the default is half a
- word. (If this would be less than one storage unit, it is
- rounded up to one unit.) */
+/* Set the sizes of the core types. */
#define SHORT_TYPE_SIZE 16
-
-/* A C expression for the size in bits of the type `long' on the
- target machine. If you don't define this, the default is one
- word. */
+#define INT_TYPE_SIZE (TARGET_INT64 ? 64 : 32)
#define LONG_TYPE_SIZE (TARGET_LONG64 ? 64 : 32)
-#define MAX_LONG_TYPE_SIZE 64
-
-/* A C expression for the size in bits of the type `long long' on the
- target machine. If you don't define this, the default is two
- words. */
#define LONG_LONG_TYPE_SIZE 64
-/* A C expression for the size in bits of the type `float' on the
- target machine. If you don't define this, the default is one
- word. */
-#define FLOAT_TYPE_SIZE 32
+#define MAX_LONG_TYPE_SIZE 64
-/* A C expression for the size in bits of the type `double' on the
- target machine. If you don't define this, the default is two
- words. */
+#define FLOAT_TYPE_SIZE 32
#define DOUBLE_TYPE_SIZE 64
-
-/* A C expression for the size in bits of the type `long double' on
- the target machine. If you don't define this, the default is two
- words. */
#define LONG_DOUBLE_TYPE_SIZE \
(mips_abi == ABI_N32 || mips_abi == ABI_64 ? 128 : 64)
/* There is no point aligning anything to a rounder boundary than this. */
#define BIGGEST_ALIGNMENT LONG_DOUBLE_TYPE_SIZE
-/* Set this nonzero if move instructions will actually fail to work
- when given unaligned data. */
+/* All accesses must be aligned. */
#define STRICT_ALIGNMENT 1
/* Define this if you wish to imitate the way many other C compilers
|| TREE_CODE (TYPE) == RECORD_TYPE)) ? BITS_PER_WORD : (ALIGN))
-/* Force right-alignment for small varargs in 32 bit little_endian mode */
-
-#define PAD_VARARGS_DOWN (TARGET_64BIT ? BYTES_BIG_ENDIAN : !BYTES_BIG_ENDIAN)
-
-/* Define this macro if an argument declared as `char' or `short' in a
- prototype should actually be passed as an `int'. In addition to
- avoiding errors in certain cases of mismatch, it also makes for
- better code on certain machines. */
-
-#define PROMOTE_PROTOTYPES 1
+#define PAD_VARARGS_DOWN \
+ (FUNCTION_ARG_PADDING (TYPE_MODE (type), type) == downward)
/* Define if operations between registers always perform the operation
on the full register even if a narrower mode is specified. */
#define WORD_REGISTER_OPERATIONS
-/* Define if loading in MODE, an integral mode narrower than BITS_PER_WORD
- will either zero-extend or sign-extend. The value of this macro should
- be the code that says which one of the two operations is implicitly
- done, NIL if none.
-
- When in 64 bit mode, mips_move_1word will sign extend SImode and CCmode
- moves. All other referces are zero extended. */
+/* When in 64 bit mode, move insns will sign extend SImode and CCmode
+ moves. All other references are zero extended. */
#define LOAD_EXTEND_OP(MODE) \
(TARGET_64BIT && ((MODE) == SImode || (MODE) == CCmode) \
? SIGN_EXTEND : ZERO_EXTEND)
/* Define if loading short immediate values into registers sign extends. */
#define SHORT_IMMEDIATES_SIGN_EXTEND
-
-
-/* Define this if function arguments should also be promoted using the above
- procedure. */
-#define PROMOTE_FUNCTION_ARGS
-
-/* Likewise, if the function return value is promoted. */
-#define PROMOTE_FUNCTION_RETURN
-
\f
/* Standard register usage. */
-/* Number of actual hardware registers.
- The hardware registers are assigned numbers for the compiler
- from 0 to just below FIRST_PSEUDO_REGISTER.
- All registers that the compiler knows about must be given numbers,
- even those that are not normally considered general registers.
+/* Number of hardware registers. We have:
- On the Mips, we have 32 integer registers, 32 floating point
- registers, 8 condition code registers, and the special registers
- hi and lo. After that we have 32 COP0 registers, 32 COP2 registers,
- and 32 COP3 registers. (COP1 is the floating-point processor.)
- The 8 condition code registers are only used if mips_isa >= 4. */
+ - 32 integer registers
+ - 32 floating point registers
+ - 8 condition code registers
+ - 2 accumulator registers (hi and lo)
+ - 32 registers each for coprocessors 0, 2 and 3
+ - 3 fake registers:
+ - ARG_POINTER_REGNUM
+ - FRAME_POINTER_REGNUM
+ - FAKE_CALL_REGNO (see the comment above load_callsi for details)
+ - 3 dummy entries that were used at various times in the past. */
#define FIRST_PSEUDO_REGISTER 176
-/* 1 for registers that have pervasive standard uses
- and are not available for the register allocator.
+/* By default, fix the kernel registers ($26 and $27), the global
+ pointer ($28) and the stack pointer ($29). This can change
+ depending on the command-line options.
- On the MIPS, see conventions, page D-2 */
-
-/* Regarding coprocessor registers: without evidence to the contrary,
+ Regarding coprocessor registers: without evidence to the contrary,
it's best to assume that each coprocessor register has a unique
use. This can be overridden, in, e.g., override_options() or
CONDITIONAL_REGISTER_USAGE should the assumption be inappropriate
}
-/* Don't mark $31 as a call-clobbered register. The idea is that
- it's really the call instructions themselves which clobber $31.
+/* Set up this array for o32 by default.
+
+ Note that we don't mark $31 as a call-clobbered register. The idea is
+ that it's really the call instructions themselves which clobber $31.
We don't care what the called function does with it afterwards.
This approach makes it easier to implement sibcalls. Unlike normal
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 \
}
-/* Like `CALL_USED_REGISTERS' but used to overcome a historical
- problem which makes CALL_USED_REGISTERS *always* include
- all the FIXED_REGISTERS. Until this problem has been
- resolved this macro can be used to overcome this situation.
- In particular, block_propagate() requires this list
- be acurate, or we can remove registers which should be live.
- This macro is used in regs_invalidated_by_call. */
+/* Define this since $28, though fixed, is call-saved in many ABIs. */
#define CALL_REALLY_USED_REGISTERS \
{ /* General registers. */ \
#define HI_REGNUM (MD_REG_FIRST + 0)
#define LO_REGNUM (MD_REG_FIRST + 1)
-/* FPSW_REGNUM is the single condition code used if mips_isa < 4. If
- mips_isa >= 4, it should not be used, and an arbitrary ST_REG
+/* FPSW_REGNUM is the single condition code used if !ISA_HAS_8CC.
+ If ISA_HAS_8CC, it should not be used, and an arbitrary ST_REG
should be used instead. */
#define FPSW_REGNUM ST_REG_FIRST
(COP0_REG_P (REGNO) ? '0' : COP2_REG_P (REGNO) ? '2' \
: COP3_REG_P (REGNO) ? '3' : '?')
-/* 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.
-
- On the MIPS, all general registers are one word long. Except on
- the R4000 with the FR bit set, the floating point uses register
- pairs, with the second register not being allocable. */
#define HARD_REGNO_NREGS(REGNO, MODE) mips_hard_regno_nregs (REGNO, MODE)
-/* Value is 1 if hard register REGNO can hold a value of machine-mode
- MODE. In 32 bit mode, require that DImode and DFmode be in even
- registers. For DImode, this makes some of the insns easier to
- write, since you don't have to worry about a DImode value in
- registers 3 & 4, producing a result in 4 & 5.
-
- To make the code simpler HARD_REGNO_MODE_OK now just references an
+/* To make the code simpler, HARD_REGNO_MODE_OK just references an
array built in override_options. Because machmodes.h is not yet
included before this file is processed, the MODE bound can't be
expressed here. */
== (GET_MODE_CLASS (MODE2) == MODE_FLOAT || \
GET_MODE_CLASS (MODE2) == MODE_COMPLEX_FLOAT))
-/* MIPS pc is not overloaded on a register. */
-/* #define PC_REGNUM xx */
-
/* Register to use for pushing function arguments. */
#define STACK_POINTER_REGNUM (GP_REG_FIRST + 29)
-/* Offset from the stack pointer to the first available location. Use
- the default value zero. */
-/* #define STACK_POINTER_OFFSET 0 */
-
-/* Base register for access to local variables of the function. We
- pretend that the frame pointer is $1, and then eliminate it to
- HARD_FRAME_POINTER_REGNUM. We can get away with this because $1 is
- a fixed register, and will not be used for anything else. */
-#define FRAME_POINTER_REGNUM (GP_REG_FIRST + 1)
-
-/* Temporary scratch register for use by the assembler. */
-#define ASSEMBLER_SCRATCH_REGNUM (GP_REG_FIRST + 1)
+/* These two registers don't really exist: they get eliminated to either
+ the stack or hard frame pointer. */
+#define ARG_POINTER_REGNUM 77
+#define FRAME_POINTER_REGNUM 78
/* $30 is not available on the mips16, so we use $17 as the frame
pointer. */
This is computed in `reload', in reload1.c. */
#define FRAME_POINTER_REQUIRED (current_function_calls_alloca)
-/* Base register for access to arguments of the function. */
-#define ARG_POINTER_REGNUM GP_REG_FIRST
-
/* Register in which static-chain is passed to a function. */
#define STATIC_CHAIN_REGNUM (GP_REG_FIRST + 2)
-/* If the structure value address is passed in a register, then
- `STRUCT_VALUE_REGNUM' should be the number of that register. */
-/* #define STRUCT_VALUE_REGNUM (GP_REG_FIRST + 4) */
-
-/* If the structure value address is not passed in a register, define
- `STRUCT_VALUE' as an expression returning an RTX for the place
- where the address is passed. If it returns 0, the address is
- passed as an "invisible" first argument. */
-#define STRUCT_VALUE 0
+/* Registers used as temporaries in prologue/epilogue code. If we're
+ generating mips16 code, these registers must come from the core set
+ of 8. The prologue register mustn't conflict with any incoming
+ arguments, the static chain pointer, or the frame pointer. The
+ epilogue temporary mustn't conflict with the return registers, the
+ frame pointer, the EH stack adjustment, or the EH data registers. */
-/* Mips registers used in prologue/epilogue code when the stack frame
- is larger than 32K bytes. These registers must come from the
- scratch register set, and not used for passing and returning
- arguments and any other information used in the calling sequence
- (such as pic). Must start at 12, since t0/t3 are parameter passing
- registers in the 64 bit ABI. */
+#define MIPS_PROLOGUE_TEMP_REGNUM (GP_REG_FIRST + 3)
+#define MIPS_EPILOGUE_TEMP_REGNUM (GP_REG_FIRST + (TARGET_MIPS16 ? 6 : 8))
-#define MIPS_TEMP1_REGNUM (GP_REG_FIRST + 12)
-#define MIPS_TEMP2_REGNUM (GP_REG_FIRST + 13)
+#define MIPS_PROLOGUE_TEMP(MODE) gen_rtx_REG (MODE, MIPS_PROLOGUE_TEMP_REGNUM)
+#define MIPS_EPILOGUE_TEMP(MODE) gen_rtx_REG (MODE, MIPS_EPILOGUE_TEMP_REGNUM)
/* Define this macro if it is as good or better to call a constant
function address than to call an address kept in a register. */
kept in a register. */
#define NO_RECURSIVE_FUNCTION_CSE 1
-/* The register number of the register used to address a table of
- static data addresses in memory. In some cases this register is
- defined by a processor's "application binary interface" (ABI).
- When this macro is defined, RTL is generated for this register
- once, as with the stack pointer and frame pointer registers. If
- this macro is not defined, it is up to the machine-dependent
- files to allocate such a register (if necessary). */
-#define PIC_OFFSET_TABLE_REGNUM (GP_REG_FIRST + 28)
+/* The ABI-defined global pointer. Sometimes we use a different
+ register in leaf functions: see PIC_OFFSET_TABLE_REGNUM. */
+#define GLOBAL_POINTER_REGNUM (GP_REG_FIRST + 28)
+
+/* We normally use $28 as the global pointer. However, when generating
+ n32/64 PIC, it is better for leaf functions to use a call-clobbered
+ register instead. They can then avoid saving and restoring $28
+ and perhaps avoid using a frame at all.
+
+ When a leaf function uses something other than $28, mips_expand_prologue
+ will modify pic_offset_table_rtx in place. Take the register number
+ from there after reload. */
+#define PIC_OFFSET_TABLE_REGNUM \
+ (reload_completed ? REGNO (pic_offset_table_rtx) : GLOBAL_POINTER_REGNUM)
#define PIC_FUNCTION_ADDR_REGNUM (GP_REG_FIRST + 25)
\f
sub-initializer must be suitable as an initializer for the type
`HARD_REG_SET' which is defined in `hard-reg-set.h'. */
-#define REG_CLASS_CONTENTS \
-{ \
+#define REG_CLASS_CONTENTS \
+{ \
{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* no registers */ \
{ 0x0003000c, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* mips16 nonarg regs */\
{ 0x000300fc, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* mips16 registers */ \
{ 0x01000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* mips16 T register */ \
{ 0x010300fc, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* mips16 and T regs */ \
{ 0x02000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* SVR4 PIC function address register */ \
- { 0xfdffffff, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* Every other GPR */ \
+ { 0xfdffffff, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* Every other GPR */ \
{ 0xffffffff, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* integer registers */ \
{ 0x00000000, 0xffffffff, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* floating registers*/ \
{ 0x00000000, 0x00000000, 0x00000001, 0x00000000, 0x00000000, 0x00000000 }, /* hi register */ \
{ 0x00000000, 0x00000000, 0x00000002, 0x00000000, 0x00000000, 0x00000000 }, /* lo register */ \
{ 0x00000000, 0x00000000, 0x00000003, 0x00000000, 0x00000000, 0x00000000 }, /* mul/div registers */ \
- { 0x00000000, 0x00000000, 0xffff0000, 0x0000ffff, 0x00000000, 0x00000000 }, /* cop0 registers */ \
- { 0x00000000, 0x00000000, 0x00000000, 0xffff0000, 0x0000ffff, 0x00000000 }, /* cop2 registers */ \
- { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0xffff0000, 0x0000ffff }, /* cop3 registers */ \
+ { 0x00000000, 0x00000000, 0xffff0000, 0x0000ffff, 0x00000000, 0x00000000 }, /* cop0 registers */ \
+ { 0x00000000, 0x00000000, 0x00000000, 0xffff0000, 0x0000ffff, 0x00000000 }, /* cop2 registers */ \
+ { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0xffff0000, 0x0000ffff }, /* cop3 registers */ \
{ 0xffffffff, 0x00000000, 0x00000001, 0x00000000, 0x00000000, 0x00000000 }, /* union classes */ \
{ 0xffffffff, 0x00000000, 0x00000002, 0x00000000, 0x00000000, 0x00000000 }, \
{ 0x00000000, 0xffffffff, 0x00000001, 0x00000000, 0x00000000, 0x00000000 }, \
- { 0xffffffff, 0x00000000, 0xffff0000, 0x0000ffff, 0x00000000, 0x00000000 }, \
- { 0xffffffff, 0x00000000, 0x00000000, 0xffff0000, 0x0000ffff, 0x00000000 }, \
- { 0xffffffff, 0x00000000, 0x00000000, 0x00000000, 0xffff0000, 0x0000ffff }, \
- { 0x00000000, 0x00000000, 0xffff0000, 0xffffffff, 0xffffffff, 0x0000ffff }, \
- { 0xffffffff, 0x00000000, 0xffff0000, 0xffffffff, 0xffffffff, 0x0000ffff }, \
+ { 0xffffffff, 0x00000000, 0xffff0000, 0x0000ffff, 0x00000000, 0x00000000 }, \
+ { 0xffffffff, 0x00000000, 0x00000000, 0xffff0000, 0x0000ffff, 0x00000000 }, \
+ { 0xffffffff, 0x00000000, 0x00000000, 0x00000000, 0xffff0000, 0x0000ffff }, \
+ { 0x00000000, 0x00000000, 0xffff0000, 0xffffffff, 0xffffffff, 0x0000ffff }, \
+ { 0xffffffff, 0x00000000, 0xffff0000, 0xffffffff, 0xffffffff, 0x0000ffff }, \
{ 0x00000000, 0x00000000, 0x000007f8, 0x00000000, 0x00000000, 0x00000000 }, /* status registers */ \
{ 0xffffffff, 0xffffffff, 0xffff07ff, 0xffffffff, 0xffffffff, 0x0000ffff } /* all registers */ \
}
((C) == 'G' \
&& (VALUE) == CONST0_RTX (GET_MODE (VALUE)))
-/* True if OP is a constant that should not be moved into $25.
- We need this because many versions of gas treat 'la $25,foo' as
- part of a call sequence and allow a global 'foo' to be lazily bound. */
-
-#define DANGEROUS_FOR_LA25_P(OP) \
- (TARGET_ABICALLS \
- && !TARGET_EXPLICIT_RELOCS \
- && mips_global_pic_constant_p (OP))
-
/* Letters in the range `Q' through `U' may be defined in a
machine-dependent fashion to stand for arbitrary operand types.
The machine description macro `EXTRA_CONSTRAINT' is passed the
constraint has often been used in linux and glibc code.
`S' is for legitimate constant call addresses.
`T' is for constant move_operands that cannot be safely loaded into $25.
- `U' is for constant move_operands that can be safely loaded into $25. */
+ `U' is for constant move_operands that can be safely loaded into $25.
+ `W' is for memory references that are based on a member of BASE_REG_CLASS.
+ This is true for all non-mips16 references (although it can somtimes
+ be indirect if !TARGET_EXPLICIT_RELOCS). For mips16, it excludes
+ stack and constant-pool references. */
#define EXTRA_CONSTRAINT(OP,CODE) \
(((CODE) == 'Q') ? const_arith_operand (OP, VOIDmode) \
&& call_insn_operand (OP, VOIDmode)) \
: ((CODE) == 'T') ? (CONSTANT_P (OP) \
&& move_operand (OP, VOIDmode) \
- && DANGEROUS_FOR_LA25_P (OP)) \
+ && mips_dangerous_for_la25_p (OP)) \
: ((CODE) == 'U') ? (CONSTANT_P (OP) \
&& move_operand (OP, VOIDmode) \
- && !DANGEROUS_FOR_LA25_P (OP)) \
+ && !mips_dangerous_for_la25_p (OP)) \
+ : ((CODE) == 'W') ? (GET_CODE (OP) == MEM \
+ && memory_operand (OP, VOIDmode) \
+ && (!TARGET_MIPS16 \
+ || (!stack_operand (OP, VOIDmode) \
+ && !CONSTANT_P (XEXP (OP, 0))))) \
: FALSE)
-/* 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. */
+/* Say which of the above are memory constraints. */
+#define EXTRA_MEMORY_CONSTRAINT(C, STR) ((C) == 'R' || (C) == 'W')
#define PREFERRED_RELOAD_CLASS(X,CLASS) \
- ((CLASS) != ALL_REGS \
- ? (! TARGET_MIPS16 \
- ? (CLASS) \
- : ((CLASS) != GR_REGS \
- ? (CLASS) \
- : M16_REGS)) \
- : ((GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \
- || GET_MODE_CLASS (GET_MODE (X)) == MODE_COMPLEX_FLOAT) \
- ? (TARGET_SOFT_FLOAT \
- ? (TARGET_MIPS16 ? M16_REGS : GR_REGS) \
- : FP_REGS) \
- : ((GET_MODE_CLASS (GET_MODE (X)) == MODE_INT \
- || GET_MODE (X) == VOIDmode) \
- ? (TARGET_MIPS16 ? M16_REGS : GR_REGS) \
- : (CLASS))))
+ mips_preferred_reload_class (X, CLASS)
/* Certain machines have the property that some registers cannot be
copied to some other registers without using memory. Define this
\f
/* Stack layout; function entry, exit and calling. */
-/* Define this if pushing a word on the stack
- makes the stack pointer a smaller address. */
#define STACK_GROWS_DOWNWARD
-/* Define this if the nominal address of the stack frame
- is at the high-address end of the local variables;
- that is, each additional local variable allocated
- goes at a more negative offset in the frame. */
-/* #define FRAME_GROWS_DOWNWARD */
-
-/* Offset within stack frame to start allocating local variables at.
- If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
- first local allocated. Otherwise, it is the offset to the BEGINNING
- of the first local allocated. */
+/* The offset of the first local variable from the beginning of the frame.
+ See compute_frame_size for details about the frame layout. */
#define STARTING_FRAME_OFFSET \
(current_function_outgoing_args_size \
- + (TARGET_ABICALLS ? MIPS_STACK_ALIGN (UNITS_PER_WORD) : 0))
-
-/* Offset from the stack pointer register to an item dynamically
- allocated on the stack, e.g., by `alloca'.
-
- The default value for this macro is `STACK_POINTER_OFFSET' plus the
- length of the outgoing arguments. The default is correct for most
- machines. See `function.c' for details.
-
- The MIPS ABI states that functions which dynamically allocate the
- stack must not have 0 for STACK_DYNAMIC_OFFSET, since it looks like
- we are trying to create a second frame pointer to the function, so
- allocate some stack space to make it happy.
-
- However, the linker currently complains about linking any code that
- dynamically allocates stack space, and there seems to be a bug in
- STACK_DYNAMIC_OFFSET, so don't define this right now. */
-
-#if 0
-#define STACK_DYNAMIC_OFFSET(FUNDECL) \
- ((current_function_outgoing_args_size == 0 && current_function_calls_alloca) \
- ? 4*UNITS_PER_WORD \
- : current_function_outgoing_args_size)
-#endif
-
-/* The return address for the current frame is in r31 if this is a leaf
- function. Otherwise, it is on the stack. It is at a variable offset
- from sp/fp/ap, so we define a fake hard register rap which is a
- poiner to the return address on the stack. This always gets eliminated
- during reload to be either the frame pointer or the stack pointer plus
- an offset. */
+ + (TARGET_ABICALLS && !TARGET_NEWABI \
+ ? MIPS_STACK_ALIGN (UNITS_PER_WORD) : 0))
#define RETURN_ADDR_RTX mips_return_addr
#define TARGET_PTRMEMFUNC_VBIT_LOCATION ptrmemfunc_vbit_in_delta
-/* If defined, this macro specifies a table of register pairs used to
- eliminate unneeded registers that point into the stack frame. If
- it is not defined, the only elimination attempted by the compiler
- is to replace references to the frame pointer with references to
- the stack pointer.
-
- The definition of this macro is a list of structure
- initializations, each of which specifies an original and
- replacement register.
-
- On some machines, the position of the argument pointer is not
- known until the compilation is completed. In such a case, a
- separate hard register must be used for the argument pointer.
- This register can be eliminated by replacing it with either the
- frame pointer or the argument pointer, depending on whether or not
- the frame pointer has been eliminated.
-
- In this case, you might specify:
- #define ELIMINABLE_REGS \
- {{ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
- {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
- {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}}
-
- Note that the elimination of the argument pointer with the stack
- pointer is specified first since that is the preferred elimination.
-
- The eliminations to $17 are only used on the mips16. See the
+/* The eliminations to $17 are only used for mips16 code. See the
definition of HARD_FRAME_POINTER_REGNUM. */
#define ELIMINABLE_REGS \
{ FRAME_POINTER_REGNUM, GP_REG_FIRST + 30}, \
{ FRAME_POINTER_REGNUM, GP_REG_FIRST + 17}}
-/* A C expression that returns nonzero if the compiler is allowed to
- try to replace register number FROM-REG with register number
- TO-REG. This macro need only be defined if `ELIMINABLE_REGS' is
- defined, and will usually be the constant 1, since most of the
- cases preventing register elimination are things that the compiler
- already knows about.
-
- When not in mips16 and mips64, we can always eliminate to the
- frame pointer. We can eliminate to the stack pointer unless
- a frame pointer is needed. In mips16 mode, we need a frame
- pointer for a large frame; otherwise, reload may be unable
- to compute the address of a local variable, since there is
- no way to add a large constant to the stack pointer
- without using a temporary register.
-
- In mips16, for some instructions (eg lwu), we can't eliminate the
- frame pointer for the stack pointer. These instructions are
- only generated in TARGET_64BIT mode.
- */
+/* We can always eliminate to the hard frame pointer. We can eliminate
+ to the stack pointer unless a frame pointer is needed.
+ In mips16 mode, we need a frame pointer for a large frame; otherwise,
+ reload may be unable to compute the address of a local variable,
+ since there is no way to add a large constant to the stack pointer
+ without using a temporary register. */
#define CAN_ELIMINATE(FROM, TO) \
- (((TO) == HARD_FRAME_POINTER_REGNUM \
- || ((TO) == STACK_POINTER_REGNUM && ! frame_pointer_needed \
- && ! (TARGET_MIPS16 && TARGET_64BIT) \
- && (! TARGET_MIPS16 \
- || compute_frame_size (get_frame_size ()) < 32768))))
+ ((TO) == HARD_FRAME_POINTER_REGNUM \
+ || ((TO) == STACK_POINTER_REGNUM && !frame_pointer_needed \
+ && (!TARGET_MIPS16 \
+ || compute_frame_size (get_frame_size ()) < 32768)))
#define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
- (OFFSET) = mips_initial_elimination_offset ((FROM), (TO))
-
-/* If we generate an insn to push BYTES bytes,
- this says how many the stack pointer really advances by.
- On the VAX, sp@- in a byte insn really pushes a word. */
-
-/* #define PUSH_ROUNDING(BYTES) 0 */
+ (OFFSET) = mips_initial_elimination_offset ((FROM), (TO))
-/* If defined, the maximum amount of space required for outgoing
- arguments will be computed and placed into the variable
- `current_function_outgoing_args_size'. No space will be pushed
- onto the stack for each call; instead, the function prologue
- should increase the stack frame size by this amount.
-
- It is not proper to define both `PUSH_ROUNDING' and
- `ACCUMULATE_OUTGOING_ARGS'. */
+/* Allocate stack space for arguments at the beginning of each function. */
#define ACCUMULATE_OUTGOING_ARGS 1
-/* Offset from the argument pointer register to the first argument's
- address. On some machines it may depend on the data type of the
- function.
-
- If `ARGS_GROW_DOWNWARD', this is the offset to the location above
- the first argument's address.
-
- On the MIPS, we must skip the first argument position if we are
- returning a structure or a union, to account for its address being
- passed in $4. However, at the current time, this produces a compiler
- that can't bootstrap, so comment it out for now. */
-
-#if 0
-#define FIRST_PARM_OFFSET(FNDECL) \
- (FNDECL != 0 \
- && TREE_TYPE (FNDECL) != 0 \
- && TREE_TYPE (TREE_TYPE (FNDECL)) != 0 \
- && (TREE_CODE (TREE_TYPE (TREE_TYPE (FNDECL))) == RECORD_TYPE \
- || TREE_CODE (TREE_TYPE (TREE_TYPE (FNDECL))) == UNION_TYPE) \
- ? UNITS_PER_WORD \
- : 0)
-#else
+/* The argument pointer always points to the first argument. */
#define FIRST_PARM_OFFSET(FNDECL) 0
-#endif
-
-/* When a parameter is passed in a register, stack space is still
- allocated for it. For the MIPS, stack space must be allocated, cf
- Asm Lang Prog Guide page 7-8.
-
- BEWARE that some space is also allocated for non existing arguments
- in register. In case an argument list is of form GF used registers
- are a0 (a2,a3), but we should push over a1... */
-#define REG_PARM_STACK_SPACE(FNDECL) \
- ((mips_abi == ABI_32 || mips_abi == ABI_O64) \
- ? (MAX_ARGS_IN_REGISTERS * UNITS_PER_WORD) - FIRST_PARM_OFFSET (FNDECL) \
+/* o32 and o64 reserve stack space for all argument registers. */
+#define REG_PARM_STACK_SPACE(FNDECL) \
+ ((mips_abi == ABI_32 || mips_abi == ABI_O64) \
+ ? (MAX_ARGS_IN_REGISTERS * UNITS_PER_WORD) \
: 0)
/* Define this if it is the responsibility of the caller to
((mips_abi == ABI_32 || mips_abi == ABI_O64 || mips_abi == ABI_EABI) \
? 64 : 128)
-/* Make sure 4 words are always allocated on the stack. */
-
-#ifndef STACK_ARGS_ADJUST
-#define STACK_ARGS_ADJUST(SIZE) \
-{ \
- if (SIZE.constant < 4 * UNITS_PER_WORD) \
- SIZE.constant = 4 * UNITS_PER_WORD; \
-}
-#endif
-
\f
-/* A C expression that should indicate the number of bytes of its
- own arguments that a function pops on returning, or 0
- if the function pops no arguments and the caller must therefore
- pop them all after the function returns.
-
- FUNDECL is the declaration node of the function (as a tree).
-
- FUNTYPE is a C variable whose value is a tree node that
- describes the function in question. Normally it is a node of
- type `FUNCTION_TYPE' that describes the data type of the function.
- From this it is possible to obtain the data types of the value
- and arguments (if known).
-
- When a call to a library function is being considered, FUNTYPE
- will contain an identifier node for the library function. Thus,
- if you need to distinguish among various library functions, you
- can do so by their names. Note that "library function" in this
- context means a function used to perform arithmetic, whose name
- is known specially in the compiler and was not mentioned in the
- C code being compiled.
-
- STACK-SIZE is the number of bytes of arguments passed on the
- stack. If a variable number of bytes is passed, it is zero, and
- argument popping will always be the responsibility of the
- calling function. */
-
#define RETURN_POPS_ARGS(FUNDECL,FUNTYPE,SIZE) 0
-
/* Symbolic macros for the registers used to return integer and floating
point values. */
#define FP_ARG_FIRST (FP_REG_FIRST + 12)
#define FP_ARG_LAST (FP_ARG_FIRST + MAX_ARGS_IN_REGISTERS - 1)
-/* Define how to find the value returned by a library function
- assuming the value has mode MODE. Because we define
- PROMOTE_FUNCTION_RETURN, we must promote the mode just as
- PROMOTE_MODE does. */
-
#define LIBCALL_VALUE(MODE) \
mips_function_value (NULL_TREE, NULL, (MODE))
-/* 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) \
mips_function_value ((VALTYPE), (FUNC), VOIDmode)
/* 1 if N is a possible register number for a function value.
On the MIPS, R2 R3 and F0 F2 are the only register thus used.
- Currently, R2 and F0 are only implemented here (C has no complex type) */
+ Currently, R2 and F0 are only implemented here (C has no complex type) */
#define FUNCTION_VALUE_REGNO_P(N) ((N) == GP_RETURN || (N) == FP_RETURN \
|| (LONG_DOUBLE_TYPE_SIZE == 128 && FP_RETURN != GP_RETURN \
|| (IN_RANGE((N), FP_ARG_FIRST, FP_ARG_LAST) \
&& ((N) % FP_INC == 0) && mips_abi != ABI_O64)) \
&& !fixed_regs[N])
-
-/* A C expression which can inhibit the returning of certain function
- values in registers, based on the type of value. A nonzero value says
- to return the function value in memory, just as large structures are
- always returned. Here TYPE will be a C expression of type
- `tree', representing the data type of the value.
-
- Note that values of mode `BLKmode' must be explicitly
- handled by this macro. Also, the option `-fpcc-struct-return'
- takes effect regardless of this macro. On most systems, it is
- possible to leave the macro undefined; this causes a default
- definition to be used, whose value is the constant 1 for BLKmode
- values, and 0 otherwise.
-
- GCC normally converts 1 byte structures into chars, 2 byte
- structs into shorts, and 4 byte structs into ints, and returns
- them this way. Defining the following macro overrides this,
- to give us MIPS cc compatibility. */
-
-#define RETURN_IN_MEMORY(TYPE) \
- mips_return_in_memory (TYPE)
-
-#define SETUP_INCOMING_VARARGS(CUM,MODE,TYPE,PRETEND_SIZE,NO_RTL) \
- (PRETEND_SIZE) = mips_setup_incoming_varargs (&(CUM), (MODE), \
- (TYPE), (NO_RTL))
\f
-#define STRICT_ARGUMENT_NAMING (mips_abi != ABI_32 && mips_abi != ABI_O64)
-
-/* Define a data type for recording info about an argument list
- during the scan of that argument list. This data type should
- hold all necessary information about the function itself
- and about the args processed so far, enough to enable macros
- such as FUNCTION_ARG to determine where the next arg should go.
-
- This structure has to cope with two different argument allocation
+/* This structure has to cope with two different argument allocation
schemes. Most MIPS ABIs view the arguments as a struct, of which the
first N words go in registers and the rest go on the stack. If I < N,
the Ith word might go in Ith integer argument register or the
- Ith floating-point one. In some cases, it has to go in both (see
- function_arg). For these ABIs, we only need to remember the number
- of words passed so far.
+ Ith floating-point one. For these ABIs, we only need to remember
+ the number of words passed so far.
The EABI instead allocates the integer and floating-point arguments
separately. The first N words of FP arguments go in FP registers,
/* True if the function has a prototype. */
int prototype;
-
- /* When a structure does not take up a full register, the argument
- should sometimes be shifted left so that it occupies the high part
- of the register. These two fields describe an array of ashl
- patterns for doing this. See function_arg_advance, which creates
- the shift patterns, and function_arg, which returns them when given
- a VOIDmode argument. */
- unsigned int num_adjusts;
- rtx adjust[BIGGEST_MAX_ARGS_IN_REGISTERS];
} CUMULATIVE_ARGS;
/* 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.
-
-*/
+ For a library call, FNTYPE is 0. */
-#define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME,INDIRECT) \
+#define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, N_NAMED_ARGS) \
init_cumulative_args (&CUM, FNTYPE, LIBNAME) \
/* Update the data in CUM to advance over an argument
#define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED) \
function_arg_pass_by_reference (&CUM, MODE, TYPE, NAMED)
-#define FUNCTION_ARG_PADDING(MODE, TYPE) \
- (! BYTES_BIG_ENDIAN \
- ? upward \
- : (((MODE) == BLKmode \
- ? ((TYPE) && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \
- && int_size_in_bytes (TYPE) < (PARM_BOUNDARY / BITS_PER_UNIT))\
- : (GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY \
- && (mips_abi == ABI_32 \
- || mips_abi == ABI_O64 \
- || mips_abi == ABI_EABI \
- || GET_MODE_CLASS (MODE) == MODE_INT))) \
- ? downward : upward))
+#define FUNCTION_ARG_PADDING(MODE, TYPE) \
+ (mips_pad_arg_upward (MODE, TYPE) ? upward : downward)
+
+#define BLOCK_REG_PADDING(MODE, TYPE, FIRST) \
+ (mips_pad_reg_upward (MODE, TYPE) ? upward : downward)
#define FUNCTION_ARG_CALLEE_COPIES(CUM, MODE, TYPE, NAMED) \
(mips_abi == ABI_EABI && (NAMED) \
&& FUNCTION_ARG_PASS_BY_REFERENCE (CUM, MODE, TYPE, NAMED))
-/* Modified version of the macro in expr.h. */
+/* Modified version of the macro in expr.h. Only return true if
+ the type has a variable size or if the front end requires it
+ to be passed by reference. */
#define MUST_PASS_IN_STACK(MODE,TYPE) \
((TYPE) != 0 \
&& (TREE_CODE (TYPE_SIZE (TYPE)) != INTEGER_CST \
- || TREE_ADDRESSABLE (TYPE) \
- || ((MODE) == BLKmode \
- && mips_abi != ABI_32 && mips_abi != ABI_O64 \
- && ! ((TYPE) != 0 && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \
- && 0 == (int_size_in_bytes (TYPE) \
- % (PARM_BOUNDARY / BITS_PER_UNIT))) \
- && (FUNCTION_ARG_PADDING (MODE, TYPE) \
- == (BYTES_BIG_ENDIAN ? upward : downward)))))
+ || TREE_ADDRESSABLE (TYPE)))
/* True if using EABI and varargs can be passed in floating-point
registers. Under these conditions, we need a more complex form
(mips_abi == ABI_EABI && UNITS_PER_FPVALUE >= UNITS_PER_DOUBLE)
\f
-/* Tell prologue and epilogue if register REGNO should be saved / restored. */
-
-#define MUST_SAVE_REGISTER(regno) \
- ((regs_ever_live[regno] && !call_used_regs[regno]) \
- || (regno == HARD_FRAME_POINTER_REGNUM && frame_pointer_needed) \
- || (regno == (GP_REG_FIRST + 31) && regs_ever_live[GP_REG_FIRST + 31]))
-
/* Say that the epilogue uses the return address register. Note that
in the case of sibcalls, the values "used by the epilogue" are
considered live at the start of the called function. */
: ((LOC) + 15) & ~15)
\f
-/* Define the `__builtin_va_list' type for the ABI. */
-#define BUILD_VA_LIST_TYPE(VALIST) \
- (VALIST) = mips_build_va_list ()
-
/* Implement `va_start' for varargs and stdarg. */
#define EXPAND_BUILTIN_VA_START(valist, nextarg) \
mips_va_start (valist, nextarg)
\
func_addr = plus_constant (ADDR, 32); \
chain_addr = plus_constant (func_addr, GET_MODE_SIZE (ptr_mode)); \
- emit_move_insn (gen_rtx_MEM (ptr_mode, func_addr), \
- gen_lowpart (ptr_mode, force_reg (Pmode, FUNC))); \
- emit_move_insn (gen_rtx_MEM (ptr_mode, chain_addr), \
- gen_lowpart (ptr_mode, force_reg (Pmode, CHAIN))); \
+ emit_move_insn (gen_rtx_MEM (ptr_mode, func_addr), FUNC); \
+ emit_move_insn (gen_rtx_MEM (ptr_mode, chain_addr), CHAIN); \
\
/* Flush both caches. We need to flush the data cache in case \
the system has a write-back cache. */ \
\f
/* Addressing modes, and classification of registers for them. */
-/* These assume that REGNO is a hard or pseudo reg number.
- 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.
- These definitions are NOT overridden anywhere. */
-
-#define BASE_REG_P(regno, mode) \
- (TARGET_MIPS16 \
- ? (M16_REG_P (regno) \
- || (regno) == FRAME_POINTER_REGNUM \
- || (regno) == ARG_POINTER_REGNUM \
- || ((regno) == STACK_POINTER_REGNUM \
- && (GET_MODE_SIZE (mode) == 4 \
- || GET_MODE_SIZE (mode) == 8))) \
- : GP_REG_P (regno))
-
-#define GP_REG_OR_PSEUDO_STRICT_P(regno, mode) \
- BASE_REG_P((regno < FIRST_PSEUDO_REGISTER) ? (int) regno : reg_renumber[regno], \
- (mode))
-
-#define GP_REG_OR_PSEUDO_NONSTRICT_P(regno, mode) \
- (((regno) >= FIRST_PSEUDO_REGISTER) || (BASE_REG_P ((regno), (mode))))
-
-#define REGNO_OK_FOR_INDEX_P(regno) 0
-#define REGNO_MODE_OK_FOR_BASE_P(regno, mode) \
- GP_REG_OR_PSEUDO_STRICT_P ((regno), (mode))
+#define REGNO_OK_FOR_INDEX_P(REGNO) 0
+#define REGNO_MODE_OK_FOR_BASE_P(REGNO, MODE) \
+ mips_regno_mode_ok_for_base_p (REGNO, MODE, 1)
/* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
and check its validity for a certain class.
#ifndef REG_OK_STRICT
#define REG_MODE_OK_FOR_BASE_P(X, MODE) \
- mips_reg_mode_ok_for_base_p (X, MODE, 0)
+ mips_regno_mode_ok_for_base_p (REGNO (X), MODE, 0)
#else
#define REG_MODE_OK_FOR_BASE_P(X, MODE) \
- mips_reg_mode_ok_for_base_p (X, MODE, 1)
+ mips_regno_mode_ok_for_base_p (REGNO (X), MODE, 1)
#endif
#define REG_OK_FOR_INDEX_P(X) 0
#define CONSTANT_ADDRESS_P(X) \
(CONSTANT_P (X) && mips_legitimate_address_p (SImode, X, 0))
-
-/* Nonzero if the constant value X is a legitimate general operand.
- It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE.
-
- At present, GAS doesn't understand li.[sd], so don't allow it
- to be generated at present. Also, the MIPS assembler does not
- grok li.d Infinity. */
-
-/* ??? SGI Irix 6 assembler fails for CONST address, so reject them.
- Note that the Irix 6 assembler problem may already be fixed.
- Note also that the GET_CODE (X) == CONST test catches the mips16
- gp pseudo reg (see mips16_gp_pseudo_reg) deciding it is not
- a LEGITIMATE_CONSTANT. If we ever want mips16 and ABI_N32 or
- ABI_64 to work together, we'll need to fix this. */
#define LEGITIMATE_CONSTANT_P(X) (mips_const_insns (X) > 0)
#define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) \
\f
/* Specify the machine mode that this machine uses
for the index in the tablejump instruction.
- ??? Using HImode in mips16 mode can cause overflow. However, the
- overflow is no more likely than the overflow in a branch
- instruction. Large functions can currently break in both ways. */
+ ??? Using HImode in mips16 mode can cause overflow. */
#define CASE_VECTOR_MODE \
(TARGET_MIPS16 ? HImode : ptr_mode)
this as 1, since it avoids making a QI or HI mode register. */
#define SLOW_BYTE_ACCESS 1
-/* We assume that the store-condition-codes instructions store 0 for false
- and some other value for true. This is the value stored for true. */
-
-#define STORE_FLAG_VALUE 1
-
/* Define this to be nonzero if shift instructions ignore all but the low-order
few bits. */
#define SHIFT_COUNT_TRUNCATED 1
\f
/* The cost of loading values from the constant pool. It should be
- larger than the cost of any constant we want to synthesise in-line. */
+ larger than the cost of any constant we want to synthesize in-line. */
#define CONSTANT_POOL_COST COSTS_N_INSNS (8)
that the constraints of the insn are met. Setting a cost of
other than 2 will allow reload to verify that the constraints are
met. You should do this if the `movM' pattern's constraints do
- not allow such copying. */
+ not allow such copying. */
#define REGISTER_MOVE_COST(MODE, FROM, TO) \
mips_register_move_cost (MODE, FROM, TO)
#define PREDICATE_CODES \
{"uns_arith_operand", { REG, CONST_INT, SUBREG, ADDRESSOF }}, \
{"symbolic_operand", { CONST, SYMBOL_REF, LABEL_REF }}, \
- {"const_arith_operand", { CONST, CONST_INT }}, \
+ {"global_got_operand", { CONST, SYMBOL_REF, LABEL_REF }}, \
+ {"local_got_operand", { CONST, SYMBOL_REF, LABEL_REF }}, \
+ {"const_arith_operand", { CONST_INT }}, \
+ {"small_data_pattern", { SET, PARALLEL, UNSPEC, \
+ UNSPEC_VOLATILE }}, \
{"arith_operand", { REG, CONST_INT, CONST, SUBREG, ADDRESSOF }}, \
- {"arith32_operand", { REG, CONST_INT, SUBREG, ADDRESSOF }}, \
{"reg_or_0_operand", { REG, CONST_INT, CONST_DOUBLE, SUBREG, ADDRESSOF }}, \
- {"true_reg_or_0_operand", { REG, CONST_INT, CONST_DOUBLE, SUBREG, ADDRESSOF }}, \
{"small_int", { CONST_INT }}, \
- {"large_int", { CONST_INT }}, \
- {"mips_const_double_ok", { CONST_DOUBLE }}, \
{"const_float_1_operand", { CONST_DOUBLE }}, \
- {"simple_memory_operand", { MEM, SUBREG }}, \
+ {"reg_or_const_float_1_operand", { CONST_DOUBLE, REG}}, \
{"equality_op", { EQ, NE }}, \
{"cmp_op", { EQ, NE, GT, GE, GTU, GEU, LT, LE, \
LTU, LEU }}, \
{"move_operand", { CONST_INT, CONST_DOUBLE, CONST, \
SYMBOL_REF, LABEL_REF, SUBREG, \
REG, MEM}}, \
+ {"stack_operand", { MEM }}, \
{"consttable_operand", { LABEL_REF, SYMBOL_REF, CONST_INT, \
CONST_DOUBLE, CONST }}, \
{"fcc_register_operand", { REG, SUBREG }}, \
\f
/* Control the assembler format that we output. */
-/* Output at beginning of assembler file.
- If we are optimizing to use the global pointer, create a temporary
- file to hold all of the text stuff, and write it out to the end.
- This is needed because the MIPS assembler is evidently one pass,
- and if it hasn't seen the relevant .comm/.lcomm/.extern/.sdata
- declaration when the code is processed, it generates a two
- instruction sequence. */
-
-#undef ASM_FILE_START
-#define ASM_FILE_START(STREAM) mips_asm_file_start (STREAM)
-
/* Output to assembler file text saying following lines
may contain character constants, extra white space, comments, etc. */
&mips_reg_names[175][0] \
}
-/* print-rtl.c can't use REGISTER_NAMES, since it depends on mips.c.
- So define this for it. */
-#define DEBUG_REGISTER_NAMES \
-{ \
- "$0", "at", "v0", "v1", "a0", "a1", "a2", "a3", \
- "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7", \
- "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7", \
- "t8", "t9", "k0", "k1", "gp", "sp", "$fp", "ra", \
- "$f0", "$f1", "$f2", "$f3", "$f4", "$f5", "$f6", "$f7", \
- "$f8", "$f9", "$f10", "$f11", "$f12", "$f13", "$f14", "$f15", \
- "$f16", "$f17", "$f18", "$f19", "$f20", "$f21", "$f22", "$f23", \
- "$f24", "$f25", "$f26", "$f27", "$f28", "$f29", "$f30", "$f31", \
- "hi", "lo", "", "$fcc0","$fcc1","$fcc2","$fcc3","$fcc4", \
- "$fcc5","$fcc6","$fcc7","$rap", "", "", "", "", \
- "$c0r0", "$c0r1", "$c0r2", "$c0r3", "$c0r4", "$c0r5", "$c0r6", "$c0r7",\
- "$c0r8", "$c0r9", "$c0r10","$c0r11","$c0r12","$c0r13","$c0r14","$c0r15",\
- "$c0r16","$c0r17","$c0r18","$c0r19","$c0r20","$c0r21","$c0r22","$c0r23",\
- "$c0r24","$c0r25","$c0r26","$c0r27","$c0r28","$c0r29","$c0r30","$c0r31",\
- "$c2r0", "$c2r1", "$c2r2", "$c2r3", "$c2r4", "$c2r5", "$c2r6", "$c2r7",\
- "$c2r8", "$c2r9", "$c2r10","$c2r11","$c2r12","$c2r13","$c2r14","$c2r15",\
- "$c2r16","$c2r17","$c2r18","$c2r19","$c2r20","$c2r21","$c2r22","$c2r23",\
- "$c2r24","$c2r25","$c2r26","$c2r27","$c2r28","$c2r29","$c2r30","$c2r31",\
- "$c3r0", "$c3r1", "$c3r2", "$c3r3", "$c3r4", "$c3r5", "$c3r6", "$c3r7",\
- "$c3r8", "$c3r9", "$c3r10","$c3r11","$c3r12","$c3r13","$c3r14","$c3r15",\
- "$c3r16","$c3r17","$c3r18","$c3r19","$c3r20","$c3r21","$c3r22","$c3r23",\
- "$c3r24","$c3r25","$c3r26","$c3r27","$c3r28","$c3r29","$c3r30","$c3r31"\
-}
-
/* If defined, a C initializer for an array of structures
containing a name and a register number. This macro defines
additional names for hard registers, thus allowing the `asm'
while (0)
-/* How to tell the debugger about changes of source files. Note, the
- mips ECOFF format cannot deal with changes of files inside of
- functions, which means the output of parser generators like bison
- is generally not debuggable without using the -l switch. Lose,
- lose, lose. Silicon graphics seems to want all .file's hardwired
- to 1. */
+/* How to tell the debugger about changes of source files. */
#ifndef SET_FILE_NUMBER
#define SET_FILE_NUMBER() ++num_source_filenames
#endif
#ifndef ASM_OUTPUT_SOURCE_LINE
-#define ASM_OUTPUT_SOURCE_LINE(STREAM, LINE) \
+#define ASM_OUTPUT_SOURCE_LINE(STREAM, LINE, COUNTER) \
mips_output_lineno (STREAM, LINE)
#endif
$Lc[0-9]+ Label for use in s<xx> operation.
$Le[0-9]+ End blocks for MIPS debug support */
-/* A C statement (sans semicolon) to output to the stdio stream
- STREAM any text necessary for declaring the name NAME of an
- initialized variable which is being defined. This macro must
- output the label definition (perhaps using `ASM_OUTPUT_LABEL').
- The argument DECL is the `VAR_DECL' tree node representing the
- variable.
-
- If this macro is not defined, then the variable name is defined
- in the usual manner as a label (by means of `ASM_OUTPUT_LABEL'). */
-
#undef ASM_DECLARE_OBJECT_NAME
-#define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL) \
-do \
- { \
- mips_declare_object (STREAM, NAME, "", ":\n", 0); \
- } \
-while (0)
+#define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL) \
+ mips_declare_object (STREAM, NAME, "", ":\n", 0)
/* Globalizing directive for a label. */
#define GLOBAL_ASM_OP "\t.globl\t"
#define ASM_OUTPUT_EXTERNAL(STREAM,DECL,NAME) \
mips_output_external(STREAM,DECL,NAME)
-
/* This is how to declare a function name. The actual work of
emitting the label is moved to function_prologue, so that we can
get the line number correctly emitted before the .ent directive,
#undef ASM_DECLARE_FUNCTION_NAME
#define ASM_DECLARE_FUNCTION_NAME(STREAM,NAME,DECL)
+#ifndef FUNCTION_NAME_ALREADY_DECLARED
+#define FUNCTION_NAME_ALREADY_DECLARED 0
+#endif
+
/* This is how to store into the string LABEL
the symbol_ref name of an internal numbered label where
PREFIX is the class of label and NUM is the number within the class.
do { \
if (TARGET_EMBEDDED_PIC || TARGET_MIPS16) \
function_section (current_function_decl); \
- (*targetm.asm_out.internal_label) (FILE, PREFIX, NUM); \
+ (*targetm.asm_out.internal_label) (FILE, PREFIX, NUM); \
} while (0)
/* This is how to output an assembler line
/* This is how to output a string. */
#undef ASM_OUTPUT_ASCII
#define ASM_OUTPUT_ASCII(STREAM, STRING, LEN) \
- mips_output_ascii (STREAM, STRING, LEN)
+ mips_output_ascii (STREAM, STRING, LEN, "\t.ascii\t")
/* Output #ident as a in the read-only data section. */
#undef ASM_OUTPUT_IDENT
#undef READONLY_DATA_SECTION_ASM_OP
#define READONLY_DATA_SECTION_ASM_OP "\t.rdata" /* read-only data */
-#define SMALL_DATA_SECTION sdata_section
-
-/* What other sections we support other than the normal .data/.text. */
-
-#undef EXTRA_SECTIONS
-#define EXTRA_SECTIONS in_sdata
-
-/* Define the additional functions to select our additional sections. */
-
-/* on the MIPS it is not a good idea to put constants in the text
- section, since this defeats the sdata/data mechanism. This is
- especially true when -O is used. In this case an effort is made to
- address with faster (gp) register relative addressing, which can
- only get at sdata and sbss items (there is no stext !!) However,
- if the constant is too large for sdata, and it's readonly, it
- will go into the .rdata section. */
-
-#undef EXTRA_SECTION_FUNCTIONS
-#define EXTRA_SECTION_FUNCTIONS \
-void \
-sdata_section () \
-{ \
- if (in_section != in_sdata) \
- { \
- fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP); \
- in_section = in_sdata; \
- } \
-}
-
/* Given a decl node or constant node, choose the section to output it in
and select that section. */
#define ASM_COMMENT_START " #"
#endif
\f
-
-/* Macros for mips-tfile.c to encapsulate stabs in ECOFF, and for
- and mips-tdump.c to print them out.
-
- These must match the corresponding definitions in gdb/mipsread.c.
- Unfortunately, gcc and gdb do not currently share any directories. */
-
-#define CODE_MASK 0x8F300
-#define MIPS_IS_STAB(sym) (((sym)->index & 0xFFF00) == CODE_MASK)
-#define MIPS_MARK_STAB(code) ((code)+CODE_MASK)
-#define MIPS_UNMARK_STAB(code) ((code)-CODE_MASK)
-
-\f
/* Default definitions for size_t and ptrdiff_t. We must override the
definitions from ../svr4.h on mips-*-linux-gnu. */
-#ifndef SIZE_TYPE
+#undef SIZE_TYPE
#define SIZE_TYPE (POINTER_SIZE == 64 ? "long unsigned int" : "unsigned int")
-#endif
-#ifndef PTRDIFF_TYPE
+#undef PTRDIFF_TYPE
#define PTRDIFF_TYPE (POINTER_SIZE == 64 ? "long int" : "int")
-#endif
/* See mips_expand_prologue's use of loadgp for when this should be
true. */
&& mips_abi != ABI_32 \
&& mips_abi != ABI_O64)
\f
-/* We need to use a special set of functions to handle hard floating
- point code in mips16 mode. */
-
-#ifndef INIT_SUBTARGET_OPTABS
-#define INIT_SUBTARGET_OPTABS
-#endif
-
-#define INIT_TARGET_OPTABS \
-do \
- { \
- if (! TARGET_MIPS16 || ! mips16_hard_float) \
- INIT_SUBTARGET_OPTABS; \
- else \
- { \
- add_optab->handlers[(int) SFmode].libfunc = \
- init_one_libfunc ("__mips16_addsf3"); \
- sub_optab->handlers[(int) SFmode].libfunc = \
- init_one_libfunc ("__mips16_subsf3"); \
- smul_optab->handlers[(int) SFmode].libfunc = \
- init_one_libfunc ("__mips16_mulsf3"); \
- sdiv_optab->handlers[(int) SFmode].libfunc = \
- init_one_libfunc ("__mips16_divsf3"); \
- \
- eqsf2_libfunc = init_one_libfunc ("__mips16_eqsf2"); \
- nesf2_libfunc = init_one_libfunc ("__mips16_nesf2"); \
- gtsf2_libfunc = init_one_libfunc ("__mips16_gtsf2"); \
- gesf2_libfunc = init_one_libfunc ("__mips16_gesf2"); \
- ltsf2_libfunc = init_one_libfunc ("__mips16_ltsf2"); \
- lesf2_libfunc = init_one_libfunc ("__mips16_lesf2"); \
- \
- floatsisf_libfunc = \
- init_one_libfunc ("__mips16_floatsisf"); \
- fixsfsi_libfunc = \
- init_one_libfunc ("__mips16_fixsfsi"); \
- \
- if (TARGET_DOUBLE_FLOAT) \
- { \
- add_optab->handlers[(int) DFmode].libfunc = \
- init_one_libfunc ("__mips16_adddf3"); \
- sub_optab->handlers[(int) DFmode].libfunc = \
- init_one_libfunc ("__mips16_subdf3"); \
- smul_optab->handlers[(int) DFmode].libfunc = \
- init_one_libfunc ("__mips16_muldf3"); \
- sdiv_optab->handlers[(int) DFmode].libfunc = \
- init_one_libfunc ("__mips16_divdf3"); \
- \
- extendsfdf2_libfunc = \
- init_one_libfunc ("__mips16_extendsfdf2"); \
- truncdfsf2_libfunc = \
- init_one_libfunc ("__mips16_truncdfsf2"); \
- \
- eqdf2_libfunc = \
- init_one_libfunc ("__mips16_eqdf2"); \
- nedf2_libfunc = \
- init_one_libfunc ("__mips16_nedf2"); \
- gtdf2_libfunc = \
- init_one_libfunc ("__mips16_gtdf2"); \
- gedf2_libfunc = \
- init_one_libfunc ("__mips16_gedf2"); \
- ltdf2_libfunc = \
- init_one_libfunc ("__mips16_ltdf2"); \
- ledf2_libfunc = \
- init_one_libfunc ("__mips16_ledf2"); \
- \
- floatsidf_libfunc = \
- init_one_libfunc ("__mips16_floatsidf"); \
- fixdfsi_libfunc = \
- init_one_libfunc ("__mips16_fixdfsi"); \
- } \
- } \
- } \
-while (0)
#define DFMODE_NAN \
unsigned short DFbignan[4] = {0x7ff7, 0xffff, 0xffff, 0xffff}; \
we need to load our GP. We don't preserve $gp or $ra, since each
init/fini chunk is supposed to initialize $gp, and crti/crtn
already take care of preserving $ra and, when appropriate, $gp. */
-#if _MIPS_SIM == _MIPS_SIM_ABI32
+#if (defined _ABIO32 && _MIPS_SIM == _ABIO32)
#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
asm (SECTION_OP "\n\
.set noreorder\n\
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