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Tweak ABI & add moxie-uclinux target.

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From-SVN: r150307
This commit is contained in:
Anthony Green 2009-07-31 05:11:21 +00:00 committed by Anthony Green
parent 20e19db49e
commit 23865616d6
5 changed files with 81 additions and 23 deletions
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18
gcc/ChangeLog
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@ -1,3 +1,21 @@
2009-07-31 Anthony Green <green@moxielogic.com>
* config/moxie/moxie.c (moxie_expand_prologue): Use $r5 instead of
$r12 in prologue.
(moxie_expand_epilogue): Ditto for epilogue.
(moxie_setup_incoming_varargs): ABI change. Use 5 registers for
incoming arguments.
(moxie_function_arg): Ditto.
(moxie_pass_by_reference): Ditto.
(moxie_arg_partial_bytes): Ditto.
* config/moxie/moxie.h (CALL_USED_REGISTERS): Ditto.
(FUNCTION_ARG_ADVANCE) Ditto.
(REG_PARM_STACK_SPACE) Ditto.
(FUNCTION_ARG_REGNO_P) Dito.
* config.gcc: Add moxie linux config support.
* gcc/config/moxie/uclinux.h: New file.
2009-07-31 DJ Delorie <dj@redhat.com>
* config/sh/sh.md (UNSPECV_SP_SWITCH_B): New.

9
gcc/config.gcc
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@ -894,6 +894,15 @@ moxie-*-elf)
extra_parts="crti.o crtn.o crtbegin.o crtend.o"
tmake_file="${tmake_file} moxie/t-moxie moxie/t-moxie-softfp soft-fp/t-softfp"
;;
moxie-*-uclinux*)
gas=yes
gnu_ld=yes
tm_file="dbxelf.h elfos.h svr4.h ${tm_file} linux.h glibc-stdint.h moxie/uclinux.h"
extra_parts="crti.o crtn.o crtbegin.o crtend.o"
tmake_file="${tmake_file} moxie/t-moxie moxie/t-moxie-softfp soft-fp/t-softfp"
tm_defines="${tm_defines} UCLIBC_DEFAULT=1"
extra_options="${extra_options} linux.opt"
;;
h8300-*-rtems*)
tmake_file="h8300/t-h8300 h8300/t-elf t-rtems h8300/t-rtems"
tm_file="h8300/h8300.h dbxelf.h elfos.h h8300/elf.h h8300/rtems.h rtems.h newlib-stdint.h"

18
gcc/config/moxie/moxie.c
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@ -284,12 +284,12 @@ moxie_expand_prologue (void)
{
insn =
emit_insn (gen_movsi
(gen_rtx_REG (Pmode, MOXIE_R12),
(gen_rtx_REG (Pmode, MOXIE_R5),
GEN_INT (-cfun->machine->size_for_adjusting_sp)));
RTX_FRAME_RELATED_P (insn) = 1;
insn = emit_insn (gen_addsi3 (stack_pointer_rtx,
stack_pointer_rtx,
gen_rtx_REG (Pmode, MOXIE_R12)));
gen_rtx_REG (Pmode, MOXIE_R5)));
RTX_FRAME_RELATED_P (insn) = 1;
}
}
@ -303,7 +303,7 @@ moxie_expand_epilogue (void)
if (cfun->machine->callee_saved_reg_size != 0)
{
reg = gen_rtx_REG (Pmode, MOXIE_R12);
reg = gen_rtx_REG (Pmode, MOXIE_R5);
if (cfun->machine->callee_saved_reg_size <= 255)
{
emit_move_insn (reg, hard_frame_pointer_rtx);
@ -359,14 +359,14 @@ moxie_setup_incoming_varargs (CUMULATIVE_ARGS *cum,
int *pretend_size, int no_rtl)
{
int regno;
int regs = 4 - *cum;
int regs = 7 - *cum;
*pretend_size = regs < 0 ? 0 : GET_MODE_SIZE (SImode) * regs;
if (no_rtl)
return;
for (regno = *cum; regno < 4; regno++)
for (regno = *cum; regno < 7; regno++)
{
rtx reg = gen_rtx_REG (SImode, regno);
rtx slot = gen_rtx_PLUS (Pmode,
@ -395,7 +395,7 @@ rtx
moxie_function_arg (CUMULATIVE_ARGS cum, enum machine_mode mode,
tree type ATTRIBUTE_UNUSED, int named ATTRIBUTE_UNUSED)
{
if (cum < 4)
if (cum < 7)
return gen_rtx_REG (mode, cum);
else
return NULL_RTX;
@ -420,7 +420,7 @@ moxie_pass_by_reference (CUMULATIVE_ARGS *cum ATTRIBUTE_UNUSED,
else
size = GET_MODE_SIZE (mode);
return size > 8;
return size > 4*5;
}
/* Some function arguments will only partially fit in the registers
@ -434,7 +434,7 @@ moxie_arg_partial_bytes (CUMULATIVE_ARGS *cum,
{
int bytes_left, size;
if (*cum >= 4)
if (*cum >= 7)
return 0;
if (moxie_pass_by_reference (cum, mode, type, named))
@ -448,7 +448,7 @@ moxie_arg_partial_bytes (CUMULATIVE_ARGS *cum,
else
size = GET_MODE_SIZE (mode);
bytes_left = 8 - ((*cum - 2) * 4);
bytes_left = (4 * 5) - ((*cum - 2) * 4);
if (size > bytes_left)
return bytes_left;

20
gcc/config/moxie/moxie.h
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@ -144,7 +144,7 @@ enum reg_class
#define REG_CLASS_CONTENTS \
{ { 0x00000000 }, /* Empty */ \
{ 0x0003FFFF }, /* $fp, $sp, $r0 to $r5, ?fp */ \
{ 0x0003FFFF }, /* $fp, $sp, $r0 to $r13, ?fp */ \
{ 0x00040000 }, /* $pc */ \
{ 0x00080000 }, /* ?cc */ \
{ 0x000FFFFF } /* All registers */ \
@ -166,7 +166,7 @@ enum reg_class
1, 1, 1, 1 }
#define CALL_USED_REGISTERS { 1, 1, 1, 1, \
0, 0, 0, 0, \
1, 1, 1, 1, \
0, 0, 0, 0, \
0, 0, 1, 1, \
1, 1, 1, 1 }
@ -263,7 +263,7 @@ enum reg_class
: (unsigned) int_size_in_bytes (TYPE))
#define FUNCTION_ARG_ADVANCE(CUM,MODE,TYPE,NAMED) \
(CUM = (CUM < MOXIE_R2 ? \
(CUM = (CUM < MOXIE_R5 ? \
CUM + ((3 + MOXIE_FUNCTION_ARG_SIZE(MODE,TYPE))/4) : CUM ))
/* How Scalar Function Values Are Returned */
@ -299,7 +299,7 @@ enum reg_class
/* Define this if it is the responsibility of the caller to allocate
the area reserved for arguments passed in registers. */
#define REG_PARM_STACK_SPACE(FNDECL) (2 * UNITS_PER_WORD)
#define REG_PARM_STACK_SPACE(FNDECL) (5 * UNITS_PER_WORD)
/* Offset from the argument pointer register to the first argument's
address. On some machines it may depend on the data type of the
@ -425,7 +425,7 @@ do \
/* The register number of the stack pointer register, which must also
be a fixed register according to `FIXED_REGISTERS'. */
#define STACK_POINTER_REGNUM 1
#define STACK_POINTER_REGNUM MOXIE_SP
/* The register number of the frame pointer register, which is used to
access automatic variables in the stack frame. */
@ -448,17 +448,9 @@ do \
#define HARD_FRAME_POINTER_REGNUM MOXIE_FP
#if 0
#define ELIMINABLE_REGS \
{{ FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM }, \
{ FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM }, \
{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM }, \
{ ARG_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM }}
#else
#define ELIMINABLE_REGS \
{{ FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM }, \
{ ARG_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM }}
#endif
/* This macro is similar to `INITIAL_FRAME_POINTER_OFFSET'. It
specifies the initial difference between the specified pair of
@ -471,7 +463,7 @@ do \
/* A C expression that is nonzero if REGNO is the number of a hard
register in which function arguments are sometimes passed. */
#define FUNCTION_ARG_REGNO_P(r) (r == MOXIE_R0 || r == MOXIE_R1)
#define FUNCTION_ARG_REGNO_P(r) (r >= MOXIE_R0 && r <= MOXIE_R4)
/* A C expression that is nonzero if REGNO is the number of a hard
register in which the values of called function may come back. */

39
gcc/config/moxie/uclinux.h Normal file
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@ -0,0 +1,39 @@
/* Copyright (C) 2009 Free Software Foundation, Inc.
This file is part of GCC.
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 3, or (at your option) any later
version.
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.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
#undef STARTFILE_SPEC
#define STARTFILE_SPEC \
"%{!shared: crt1%O%s} crti%O%s crtbegin%O%s"
#undef LINK_SPEC
#define LINK_SPEC "-elf2flt"
#define TARGET_OS_CPP_BUILTINS() LINUX_TARGET_OS_CPP_BUILTINS()
/* Like the definition in gcc.c, but for purposes of uClinux, every link is
static. */
#define MFWRAP_SPEC " %{fmudflap|fmudflapth: \
--wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
--wrap=mmap --wrap=munmap --wrap=alloca\
%{fmudflapth: --wrap=pthread_create\
}} %{fmudflap|fmudflapth: --wrap=main}"