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547 lines
16 KiB
C
547 lines
16 KiB
C
/* BFD library support routines for the Renesas / SuperH SH architecture.
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Copyright 1993, 1994, 1997, 1998, 2000, 2001, 2002, 2003, 2004, 2005,
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2007 Free Software Foundation, Inc.
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Hacked by Steve Chamberlain of Cygnus Support.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "sysdep.h"
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#include "bfd.h"
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#include "libbfd.h"
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#include "../opcodes/sh-opc.h"
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#define SH_NEXT arch_info_struct + 0
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#define SH2_NEXT arch_info_struct + 1
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#define SH2E_NEXT arch_info_struct + 2
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#define SH_DSP_NEXT arch_info_struct + 3
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#define SH3_NEXT arch_info_struct + 4
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#define SH3_NOMMU_NEXT arch_info_struct + 5
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#define SH3_DSP_NEXT arch_info_struct + 6
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#define SH3E_NEXT arch_info_struct + 7
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#define SH4_NEXT arch_info_struct + 8
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#define SH4A_NEXT arch_info_struct + 9
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#define SH4AL_DSP_NEXT arch_info_struct + 10
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#define SH4_NOFPU_NEXT arch_info_struct + 11
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#define SH4_NOMMU_NOFPU_NEXT arch_info_struct + 12
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#define SH4A_NOFPU_NEXT arch_info_struct + 13
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#define SH2A_NEXT arch_info_struct + 14
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#define SH2A_NOFPU_NEXT arch_info_struct + 15
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#define SH2A_NOFPU_OR_SH4_NOMMU_NOFPU_NEXT arch_info_struct + 16
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#define SH2A_NOFPU_OR_SH3_NOMMU_NEXT arch_info_struct + 17
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#define SH2A_OR_SH4_NEXT arch_info_struct + 18
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#define SH2A_OR_SH3E_NEXT arch_info_struct + 19
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#define SH64_NEXT NULL
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static const bfd_arch_info_type arch_info_struct[] =
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{
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{
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32, /* 32 bits in a word. */
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32, /* 32 bits in an address. */
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8, /* 8 bits in a byte. */
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bfd_arch_sh,
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bfd_mach_sh2,
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"sh", /* Architecture name. */
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"sh2", /* Machine name. */
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1,
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FALSE, /* Not the default. */
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bfd_default_compatible,
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bfd_default_scan,
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bfd_arch_default_fill,
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SH2_NEXT
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},
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{
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32, /* 32 bits in a word. */
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32, /* 32 bits in an address. */
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8, /* 8 bits in a byte. */
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bfd_arch_sh,
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bfd_mach_sh2e,
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"sh", /* Architecture name. */
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"sh2e", /* Machine name. */
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1,
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FALSE, /* Not the default. */
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bfd_default_compatible,
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bfd_default_scan,
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bfd_arch_default_fill,
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SH2E_NEXT
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},
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{
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32, /* 32 bits in a word. */
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32, /* 32 bits in an address. */
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8, /* 8 bits in a byte. */
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bfd_arch_sh,
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bfd_mach_sh_dsp,
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"sh", /* Architecture name. */
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"sh-dsp", /* Machine name. */
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1,
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FALSE, /* Not the default. */
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bfd_default_compatible,
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bfd_default_scan,
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bfd_arch_default_fill,
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SH_DSP_NEXT
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},
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{
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32, /* 32 bits in a word. */
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32, /* 32 bits in an address. */
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8, /* 8 bits in a byte. */
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bfd_arch_sh,
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bfd_mach_sh3,
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"sh", /* Architecture name. */
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"sh3", /* Machine name. */
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1,
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FALSE, /* Not the default. */
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bfd_default_compatible,
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bfd_default_scan,
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bfd_arch_default_fill,
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SH3_NEXT
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},
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{
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32, /* 32 bits in a word. */
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32, /* 32 bits in an address. */
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8, /* 8 bits in a byte. */
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bfd_arch_sh,
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bfd_mach_sh3_nommu,
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"sh", /* Architecture name. */
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"sh3-nommu", /* Machine name. */
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1,
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FALSE, /* Not the default. */
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bfd_default_compatible,
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bfd_default_scan,
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bfd_arch_default_fill,
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SH3_NOMMU_NEXT
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},
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{
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32, /* 32 bits in a word. */
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32, /* 32 bits in an address. */
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8, /* 8 bits in a byte. */
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bfd_arch_sh,
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bfd_mach_sh3_dsp,
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"sh", /* Architecture name. */
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"sh3-dsp", /* Machine name. */
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1,
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FALSE, /* Not the default. */
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bfd_default_compatible,
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bfd_default_scan,
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bfd_arch_default_fill,
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SH3_DSP_NEXT
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},
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{
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32, /* 32 bits in a word. */
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32, /* 32 bits in an address. */
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8, /* 8 bits in a byte. */
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bfd_arch_sh,
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bfd_mach_sh3e,
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"sh", /* Architecture name. */
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"sh3e", /* Machine name. */
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1,
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FALSE, /* Not the default. */
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bfd_default_compatible,
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bfd_default_scan,
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bfd_arch_default_fill,
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SH3E_NEXT
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},
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{
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32, /* 32 bits in a word. */
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32, /* 32 bits in an address. */
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8, /* 8 bits in a byte. */
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bfd_arch_sh,
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bfd_mach_sh4,
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"sh", /* Architecture name. */
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"sh4", /* Machine name. */
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1,
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FALSE, /* Not the default. */
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bfd_default_compatible,
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bfd_default_scan,
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bfd_arch_default_fill,
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SH4_NEXT
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},
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{
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32, /* 32 bits in a word. */
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32, /* 32 bits in an address. */
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8, /* 8 bits in a byte. */
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bfd_arch_sh,
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bfd_mach_sh4a,
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"sh", /* Architecture name. */
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"sh4a", /* Machine name. */
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1,
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FALSE, /* Not the default. */
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bfd_default_compatible,
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bfd_default_scan,
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bfd_arch_default_fill,
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SH4A_NEXT
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},
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{
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32, /* 32 bits in a word. */
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32, /* 32 bits in an address. */
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8, /* 8 bits in a byte. */
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bfd_arch_sh,
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bfd_mach_sh4al_dsp,
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"sh", /* Architecture name. */
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"sh4al-dsp", /* Machine name. */
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1,
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FALSE, /* Not the default. */
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bfd_default_compatible,
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bfd_default_scan,
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bfd_arch_default_fill,
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SH4AL_DSP_NEXT
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},
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{
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32, /* 32 bits in a word. */
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32, /* 32 bits in an address. */
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8, /* 8 bits in a byte. */
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bfd_arch_sh,
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bfd_mach_sh4_nofpu,
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"sh", /* Architecture name. */
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"sh4-nofpu", /* Machine name. */
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1,
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FALSE, /* Not the default. */
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bfd_default_compatible,
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bfd_default_scan,
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bfd_arch_default_fill,
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SH4_NOFPU_NEXT
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},
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{
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32, /* 32 bits in a word. */
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32, /* 32 bits in an address. */
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8, /* 8 bits in a byte. */
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bfd_arch_sh,
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bfd_mach_sh4_nommu_nofpu,
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"sh", /* Architecture name. */
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"sh4-nommu-nofpu", /* Machine name. */
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1,
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FALSE, /* Not the default. */
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bfd_default_compatible,
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bfd_default_scan,
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bfd_arch_default_fill,
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SH4_NOMMU_NOFPU_NEXT
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},
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{
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32, /* 32 bits in a word. */
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32, /* 32 bits in an address. */
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8, /* 8 bits in a byte. */
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bfd_arch_sh,
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bfd_mach_sh4a_nofpu,
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"sh", /* Architecture name. */
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"sh4a-nofpu", /* Machine name. */
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1,
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FALSE, /* Not the default. */
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bfd_default_compatible,
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bfd_default_scan,
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bfd_arch_default_fill,
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SH4A_NOFPU_NEXT
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},
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{
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32, /* 32 bits in a word. */
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32, /* 32 bits in an address. */
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8, /* 8 bits in a byte. */
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bfd_arch_sh,
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bfd_mach_sh2a,
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"sh", /* Architecture name. */
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"sh2a", /* Machine name. */
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1,
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FALSE, /* Not the default. */
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bfd_default_compatible,
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bfd_default_scan,
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bfd_arch_default_fill,
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SH2A_NEXT
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},
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{
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32, /* 32 bits in a word. */
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32, /* 32 bits in an address. */
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8, /* 8 bits in a byte. */
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bfd_arch_sh,
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bfd_mach_sh2a_nofpu,
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"sh", /* Architecture name. */
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"sh2a-nofpu", /* Machine name. */
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1,
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FALSE, /* Not the default. */
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bfd_default_compatible,
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bfd_default_scan,
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bfd_arch_default_fill,
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SH2A_NOFPU_NEXT
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},
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{
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32, /* 32 bits in a word. */
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32, /* 32 bits in an address. */
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8, /* 8 bits in a byte. */
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bfd_arch_sh,
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bfd_mach_sh2a_nofpu_or_sh4_nommu_nofpu,
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"sh", /* Architecture name. */
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"sh2a-nofpu-or-sh4-nommu-nofpu", /* Machine name. */
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1,
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FALSE, /* Not the default. */
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bfd_default_compatible,
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bfd_default_scan,
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bfd_arch_default_fill,
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SH2A_NOFPU_OR_SH4_NOMMU_NOFPU_NEXT
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},
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{
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32, /* 32 bits in a word. */
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32, /* 32 bits in an address. */
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8, /* 8 bits in a byte. */
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bfd_arch_sh,
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bfd_mach_sh2a_nofpu_or_sh3_nommu,
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"sh", /* Architecture name. . */
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"sh2a-nofpu-or-sh3-nommu", /* Machine name. */
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1,
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FALSE, /* Not the default. */
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bfd_default_compatible,
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bfd_default_scan,
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bfd_arch_default_fill,
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SH2A_NOFPU_OR_SH3_NOMMU_NEXT
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},
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{
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32, /* 32 bits in a word. */
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32, /* 32 bits in an address. */
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8, /* 8 bits in a byte. */
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bfd_arch_sh,
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bfd_mach_sh2a_or_sh4,
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"sh", /* Architecture name. */
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"sh2a-or-sh4", /* Machine name. */
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1,
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FALSE, /* Not the default. */
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bfd_default_compatible,
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bfd_default_scan,
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bfd_arch_default_fill,
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SH2A_OR_SH4_NEXT
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},
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{
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32, /* 32 bits in a word. */
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32, /* 32 bits in an address. */
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8, /* 8 bits in a byte. */
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bfd_arch_sh,
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bfd_mach_sh2a_or_sh3e,
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"sh", /* Architecture name. */
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"sh2a-or-sh3e", /* Machine name. */
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1,
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FALSE, /* Not the default. */
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bfd_default_compatible,
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bfd_default_scan,
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bfd_arch_default_fill,
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SH2A_OR_SH3E_NEXT
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},
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{
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64, /* 64 bits in a word. */
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64, /* 64 bits in an address. */
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8, /* 8 bits in a byte. */
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bfd_arch_sh,
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bfd_mach_sh5,
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"sh", /* Architecture name. */
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"sh5", /* Machine name. */
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1,
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FALSE, /* Not the default. */
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bfd_default_compatible,
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bfd_default_scan,
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bfd_arch_default_fill,
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SH64_NEXT
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},
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};
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const bfd_arch_info_type bfd_sh_arch =
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{
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32, /* 32 bits in a word. */
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32, /* 32 bits in an address. */
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8, /* 8 bits in a byte. */
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bfd_arch_sh,
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bfd_mach_sh,
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"sh", /* Architecture name. */
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"sh", /* Machine name. */
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1,
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TRUE, /* The default machine. */
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bfd_default_compatible,
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bfd_default_scan,
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bfd_arch_default_fill,
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SH_NEXT
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};
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/* This table defines the mappings from the BFD internal numbering
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system to the opcodes internal flags system.
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It is used by the functions defined below.
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The prototypes for these SH specific functions are found in
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sh-opc.h . */
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static struct { unsigned long bfd_mach, arch, arch_up; } bfd_to_arch_table[] =
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{
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{ bfd_mach_sh, arch_sh1, arch_sh_up },
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{ bfd_mach_sh2, arch_sh2, arch_sh2_up },
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{ bfd_mach_sh2e, arch_sh2e, arch_sh2e_up },
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{ bfd_mach_sh_dsp, arch_sh_dsp, arch_sh_dsp_up },
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{ bfd_mach_sh2a, arch_sh2a, arch_sh2a_up },
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{ bfd_mach_sh2a_nofpu, arch_sh2a_nofpu, arch_sh2a_nofpu_up },
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{ bfd_mach_sh2a_nofpu_or_sh4_nommu_nofpu, arch_sh2a_nofpu_or_sh4_nommu_nofpu, arch_sh2a_nofpu_or_sh4_nommu_nofpu_up },
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{ bfd_mach_sh2a_nofpu_or_sh3_nommu, arch_sh2a_nofpu_or_sh3_nommu, arch_sh2a_nofpu_or_sh3_nommu_up },
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{ bfd_mach_sh2a_or_sh4, arch_sh2a_or_sh4, arch_sh2a_or_sh4_up },
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{ bfd_mach_sh2a_or_sh3e, arch_sh2a_or_sh3e, arch_sh2a_or_sh3e_up },
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{ bfd_mach_sh3, arch_sh3, arch_sh3_up },
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{ bfd_mach_sh3_nommu, arch_sh3_nommu, arch_sh3_nommu_up },
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{ bfd_mach_sh3_dsp, arch_sh3_dsp, arch_sh3_dsp_up },
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{ bfd_mach_sh3e, arch_sh3e, arch_sh3e_up },
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{ bfd_mach_sh4, arch_sh4, arch_sh4_up },
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{ bfd_mach_sh4a, arch_sh4a, arch_sh4a_up },
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{ bfd_mach_sh4al_dsp, arch_sh4al_dsp, arch_sh4al_dsp_up },
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{ bfd_mach_sh4_nofpu, arch_sh4_nofpu, arch_sh4_nofpu_up },
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{ bfd_mach_sh4_nommu_nofpu, arch_sh4_nommu_nofpu, arch_sh4_nommu_nofpu_up },
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{ bfd_mach_sh4a_nofpu, arch_sh4a_nofpu, arch_sh4a_nofpu_up },
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{ 0, 0, 0 } /* Terminator. */
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};
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/* Convert a BFD mach number into the right opcodes arch flags
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using the table above. */
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unsigned int
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sh_get_arch_from_bfd_mach (unsigned long mach)
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{
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int i = 0;
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while (bfd_to_arch_table[i].bfd_mach != 0)
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if (bfd_to_arch_table[i].bfd_mach == mach)
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return bfd_to_arch_table[i].arch;
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else
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i++;
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/* Machine not found. */
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BFD_FAIL();
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return SH_ARCH_UNKNOWN_ARCH;
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}
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/* Convert a BFD mach number into a set of opcodes arch flags
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describing all the compatible architectures (i.e. arch_up)
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using the table above. */
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unsigned int
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sh_get_arch_up_from_bfd_mach (unsigned long mach)
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{
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int i = 0;
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while (bfd_to_arch_table[i].bfd_mach != 0)
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if (bfd_to_arch_table[i].bfd_mach == mach)
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return bfd_to_arch_table[i].arch_up;
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else
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i++;
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/* Machine not found. */
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BFD_FAIL();
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return SH_ARCH_UNKNOWN_ARCH;
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}
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/* Convert an arbitary arch_set - not necessarily corresponding
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directly to anything in the table above - to the most generic
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architecture which supports all the required features, and
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return the corresponding BFD mach. */
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unsigned long
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sh_get_bfd_mach_from_arch_set (unsigned int arch_set)
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{
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unsigned long result = 0;
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unsigned int best = ~arch_set;
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unsigned int co_mask = ~0;
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int i = 0;
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/* If arch_set permits variants with no coprocessor then do not allow
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the other irrelevant co-processor bits to influence the choice:
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e.g. if dsp is disallowed by arch_set, then the algorithm would
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prefer fpu variants over nofpu variants because they also disallow
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dsp - even though the nofpu would be the most correct choice.
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This assumes that EVERY fpu/dsp variant has a no-coprocessor
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counter-part, or their non-fpu/dsp instructions do not have the
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no co-processor bit set. */
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if (arch_set & arch_sh_no_co)
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co_mask = ~(arch_sh_sp_fpu | arch_sh_dp_fpu | arch_sh_has_dsp);
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while (bfd_to_arch_table[i].bfd_mach != 0)
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{
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unsigned int try = bfd_to_arch_table[i].arch_up & co_mask;
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/* Conceptually: Find the architecture with the least number
|
|
of extra features or, if they have the same number, then
|
|
the greatest number of required features. Disregard
|
|
architectures where the required features alone do
|
|
not describe a valid architecture. */
|
|
if (((try & ~arch_set) < (best & ~arch_set)
|
|
|| ((try & ~arch_set) == (best & ~arch_set)
|
|
&& (~try & arch_set) < (~best & arch_set)))
|
|
&& SH_MERGE_ARCH_SET_VALID (try, arch_set))
|
|
{
|
|
result = bfd_to_arch_table[i].bfd_mach;
|
|
best = try;
|
|
}
|
|
|
|
i++;
|
|
}
|
|
|
|
/* This might happen if a new variant is added to sh-opc.h
|
|
but no corresponding entry is added to the table above. */
|
|
BFD_ASSERT (result != 0);
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
/* Merge the architecture type of two BFD files, such that the
|
|
resultant architecture supports all the features required
|
|
by the two input BFDs.
|
|
If the input BFDs are multually incompatible - i.e. one uses
|
|
DSP while the other uses FPU - or there is no known architecture
|
|
that fits the requirements then an error is emitted. */
|
|
|
|
bfd_boolean
|
|
sh_merge_bfd_arch (bfd *ibfd, bfd *obfd)
|
|
{
|
|
unsigned int old_arch, new_arch, merged_arch;
|
|
|
|
if (! _bfd_generic_verify_endian_match (ibfd, obfd))
|
|
return FALSE;
|
|
|
|
old_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (obfd));
|
|
new_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (ibfd));
|
|
|
|
merged_arch = SH_MERGE_ARCH_SET (old_arch, new_arch);
|
|
|
|
if (!SH_VALID_CO_ARCH_SET (merged_arch))
|
|
{
|
|
(*_bfd_error_handler)
|
|
("%B: uses %s instructions while previous modules use %s instructions",
|
|
ibfd,
|
|
SH_ARCH_SET_HAS_DSP (new_arch) ? "dsp" : "floating point",
|
|
SH_ARCH_SET_HAS_DSP (new_arch) ? "floating point" : "dsp");
|
|
bfd_set_error (bfd_error_bad_value);
|
|
return FALSE;
|
|
}
|
|
else if (!SH_VALID_ARCH_SET (merged_arch))
|
|
{
|
|
(*_bfd_error_handler)
|
|
("internal error: merge of architecture '%s' with architecture '%s' produced unknown architecture\n",
|
|
bfd_printable_name (obfd),
|
|
bfd_printable_name (ibfd));
|
|
bfd_set_error (bfd_error_bad_value);
|
|
return FALSE;
|
|
}
|
|
|
|
bfd_default_set_arch_mach (obfd, bfd_arch_sh,
|
|
sh_get_bfd_mach_from_arch_set (merged_arch));
|
|
|
|
return TRUE;
|
|
}
|