diff options
Diffstat (limited to 'binutils-2.25/bfd/cpu-sh.c')
| -rw-r--r-- | binutils-2.25/bfd/cpu-sh.c | 546 |
1 files changed, 546 insertions, 0 deletions
diff --git a/binutils-2.25/bfd/cpu-sh.c b/binutils-2.25/bfd/cpu-sh.c new file mode 100644 index 00000000..6ca78403 --- /dev/null +++ b/binutils-2.25/bfd/cpu-sh.c @@ -0,0 +1,546 @@ +/* BFD library support routines for the Renesas / SuperH SH architecture. + Copyright 1993, 1994, 1997, 1998, 2000, 2001, 2002, 2003, 2004, 2005, + 2007 Free Software Foundation, Inc. + Hacked by Steve Chamberlain of Cygnus Support. + + This file is part of BFD, the Binary File Descriptor library. + + This program 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 of the License, or + (at your option) any later version. + + This program 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 this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, + MA 02110-1301, USA. */ + +#include "sysdep.h" +#include "bfd.h" +#include "libbfd.h" +#include "../opcodes/sh-opc.h" + +#define SH_NEXT arch_info_struct + 0 +#define SH2_NEXT arch_info_struct + 1 +#define SH2E_NEXT arch_info_struct + 2 +#define SH_DSP_NEXT arch_info_struct + 3 +#define SH3_NEXT arch_info_struct + 4 +#define SH3_NOMMU_NEXT arch_info_struct + 5 +#define SH3_DSP_NEXT arch_info_struct + 6 +#define SH3E_NEXT arch_info_struct + 7 +#define SH4_NEXT arch_info_struct + 8 +#define SH4A_NEXT arch_info_struct + 9 +#define SH4AL_DSP_NEXT arch_info_struct + 10 +#define SH4_NOFPU_NEXT arch_info_struct + 11 +#define SH4_NOMMU_NOFPU_NEXT arch_info_struct + 12 +#define SH4A_NOFPU_NEXT arch_info_struct + 13 +#define SH2A_NEXT arch_info_struct + 14 +#define SH2A_NOFPU_NEXT arch_info_struct + 15 +#define SH2A_NOFPU_OR_SH4_NOMMU_NOFPU_NEXT arch_info_struct + 16 +#define SH2A_NOFPU_OR_SH3_NOMMU_NEXT arch_info_struct + 17 +#define SH2A_OR_SH4_NEXT arch_info_struct + 18 +#define SH2A_OR_SH3E_NEXT arch_info_struct + 19 +#define SH64_NEXT NULL + +static const bfd_arch_info_type arch_info_struct[] = +{ + { + 32, /* 32 bits in a word. */ + 32, /* 32 bits in an address. */ + 8, /* 8 bits in a byte. */ + bfd_arch_sh, + bfd_mach_sh2, + "sh", /* Architecture name. */ + "sh2", /* Machine name. */ + 1, + FALSE, /* Not the default. */ + bfd_default_compatible, + bfd_default_scan, + bfd_arch_default_fill, + SH2_NEXT + }, + { + 32, /* 32 bits in a word. */ + 32, /* 32 bits in an address. */ + 8, /* 8 bits in a byte. */ + bfd_arch_sh, + bfd_mach_sh2e, + "sh", /* Architecture name. */ + "sh2e", /* Machine name. */ + 1, + FALSE, /* Not the default. */ + bfd_default_compatible, + bfd_default_scan, + bfd_arch_default_fill, + SH2E_NEXT + }, + { + 32, /* 32 bits in a word. */ + 32, /* 32 bits in an address. */ + 8, /* 8 bits in a byte. */ + bfd_arch_sh, + bfd_mach_sh_dsp, + "sh", /* Architecture name. */ + "sh-dsp", /* Machine name. */ + 1, + FALSE, /* Not the default. */ + bfd_default_compatible, + bfd_default_scan, + bfd_arch_default_fill, + SH_DSP_NEXT + }, + { + 32, /* 32 bits in a word. */ + 32, /* 32 bits in an address. */ + 8, /* 8 bits in a byte. */ + bfd_arch_sh, + bfd_mach_sh3, + "sh", /* Architecture name. */ + "sh3", /* Machine name. */ + 1, + FALSE, /* Not the default. */ + bfd_default_compatible, + bfd_default_scan, + bfd_arch_default_fill, + SH3_NEXT + }, + { + 32, /* 32 bits in a word. */ + 32, /* 32 bits in an address. */ + 8, /* 8 bits in a byte. */ + bfd_arch_sh, + bfd_mach_sh3_nommu, + "sh", /* Architecture name. */ + "sh3-nommu", /* Machine name. */ + 1, + FALSE, /* Not the default. */ + bfd_default_compatible, + bfd_default_scan, + bfd_arch_default_fill, + SH3_NOMMU_NEXT + }, + { + 32, /* 32 bits in a word. */ + 32, /* 32 bits in an address. */ + 8, /* 8 bits in a byte. */ + bfd_arch_sh, + bfd_mach_sh3_dsp, + "sh", /* Architecture name. */ + "sh3-dsp", /* Machine name. */ + 1, + FALSE, /* Not the default. */ + bfd_default_compatible, + bfd_default_scan, + bfd_arch_default_fill, + SH3_DSP_NEXT + }, + { + 32, /* 32 bits in a word. */ + 32, /* 32 bits in an address. */ + 8, /* 8 bits in a byte. */ + bfd_arch_sh, + bfd_mach_sh3e, + "sh", /* Architecture name. */ + "sh3e", /* Machine name. */ + 1, + FALSE, /* Not the default. */ + bfd_default_compatible, + bfd_default_scan, + bfd_arch_default_fill, + SH3E_NEXT + }, + { + 32, /* 32 bits in a word. */ + 32, /* 32 bits in an address. */ + 8, /* 8 bits in a byte. */ + bfd_arch_sh, + bfd_mach_sh4, + "sh", /* Architecture name. */ + "sh4", /* Machine name. */ + 1, + FALSE, /* Not the default. */ + bfd_default_compatible, + bfd_default_scan, + bfd_arch_default_fill, + SH4_NEXT + }, + { + 32, /* 32 bits in a word. */ + 32, /* 32 bits in an address. */ + 8, /* 8 bits in a byte. */ + bfd_arch_sh, + bfd_mach_sh4a, + "sh", /* Architecture name. */ + "sh4a", /* Machine name. */ + 1, + FALSE, /* Not the default. */ + bfd_default_compatible, + bfd_default_scan, + bfd_arch_default_fill, + SH4A_NEXT + }, + { + 32, /* 32 bits in a word. */ + 32, /* 32 bits in an address. */ + 8, /* 8 bits in a byte. */ + bfd_arch_sh, + bfd_mach_sh4al_dsp, + "sh", /* Architecture name. */ + "sh4al-dsp", /* Machine name. */ + 1, + FALSE, /* Not the default. */ + bfd_default_compatible, + bfd_default_scan, + bfd_arch_default_fill, + SH4AL_DSP_NEXT + }, + { + 32, /* 32 bits in a word. */ + 32, /* 32 bits in an address. */ + 8, /* 8 bits in a byte. */ + bfd_arch_sh, + bfd_mach_sh4_nofpu, + "sh", /* Architecture name. */ + "sh4-nofpu", /* Machine name. */ + 1, + FALSE, /* Not the default. */ + bfd_default_compatible, + bfd_default_scan, + bfd_arch_default_fill, + SH4_NOFPU_NEXT + }, + { + 32, /* 32 bits in a word. */ + 32, /* 32 bits in an address. */ + 8, /* 8 bits in a byte. */ + bfd_arch_sh, + bfd_mach_sh4_nommu_nofpu, + "sh", /* Architecture name. */ + "sh4-nommu-nofpu", /* Machine name. */ + 1, + FALSE, /* Not the default. */ + bfd_default_compatible, + bfd_default_scan, + bfd_arch_default_fill, + SH4_NOMMU_NOFPU_NEXT + }, + { + 32, /* 32 bits in a word. */ + 32, /* 32 bits in an address. */ + 8, /* 8 bits in a byte. */ + bfd_arch_sh, + bfd_mach_sh4a_nofpu, + "sh", /* Architecture name. */ + "sh4a-nofpu", /* Machine name. */ + 1, + FALSE, /* Not the default. */ + bfd_default_compatible, + bfd_default_scan, + bfd_arch_default_fill, + SH4A_NOFPU_NEXT + }, + { + 32, /* 32 bits in a word. */ + 32, /* 32 bits in an address. */ + 8, /* 8 bits in a byte. */ + bfd_arch_sh, + bfd_mach_sh2a, + "sh", /* Architecture name. */ + "sh2a", /* Machine name. */ + 1, + FALSE, /* Not the default. */ + bfd_default_compatible, + bfd_default_scan, + bfd_arch_default_fill, + SH2A_NEXT + }, + { + 32, /* 32 bits in a word. */ + 32, /* 32 bits in an address. */ + 8, /* 8 bits in a byte. */ + bfd_arch_sh, + bfd_mach_sh2a_nofpu, + "sh", /* Architecture name. */ + "sh2a-nofpu", /* Machine name. */ + 1, + FALSE, /* Not the default. */ + bfd_default_compatible, + bfd_default_scan, + bfd_arch_default_fill, + SH2A_NOFPU_NEXT + }, + { + 32, /* 32 bits in a word. */ + 32, /* 32 bits in an address. */ + 8, /* 8 bits in a byte. */ + bfd_arch_sh, + bfd_mach_sh2a_nofpu_or_sh4_nommu_nofpu, + "sh", /* Architecture name. */ + "sh2a-nofpu-or-sh4-nommu-nofpu", /* Machine name. */ + 1, + FALSE, /* Not the default. */ + bfd_default_compatible, + bfd_default_scan, + bfd_arch_default_fill, + SH2A_NOFPU_OR_SH4_NOMMU_NOFPU_NEXT + }, + { + 32, /* 32 bits in a word. */ + 32, /* 32 bits in an address. */ + 8, /* 8 bits in a byte. */ + bfd_arch_sh, + bfd_mach_sh2a_nofpu_or_sh3_nommu, + "sh", /* Architecture name. . */ + "sh2a-nofpu-or-sh3-nommu", /* Machine name. */ + 1, + FALSE, /* Not the default. */ + bfd_default_compatible, + bfd_default_scan, + bfd_arch_default_fill, + SH2A_NOFPU_OR_SH3_NOMMU_NEXT + }, + { + 32, /* 32 bits in a word. */ + 32, /* 32 bits in an address. */ + 8, /* 8 bits in a byte. */ + bfd_arch_sh, + bfd_mach_sh2a_or_sh4, + "sh", /* Architecture name. */ + "sh2a-or-sh4", /* Machine name. */ + 1, + FALSE, /* Not the default. */ + bfd_default_compatible, + bfd_default_scan, + bfd_arch_default_fill, + SH2A_OR_SH4_NEXT + }, + { + 32, /* 32 bits in a word. */ + 32, /* 32 bits in an address. */ + 8, /* 8 bits in a byte. */ + bfd_arch_sh, + bfd_mach_sh2a_or_sh3e, + "sh", /* Architecture name. */ + "sh2a-or-sh3e", /* Machine name. */ + 1, + FALSE, /* Not the default. */ + bfd_default_compatible, + bfd_default_scan, + bfd_arch_default_fill, + SH2A_OR_SH3E_NEXT + }, + { + 64, /* 64 bits in a word. */ + 64, /* 64 bits in an address. */ + 8, /* 8 bits in a byte. */ + bfd_arch_sh, + bfd_mach_sh5, + "sh", /* Architecture name. */ + "sh5", /* Machine name. */ + 1, + FALSE, /* Not the default. */ + bfd_default_compatible, + bfd_default_scan, + bfd_arch_default_fill, + SH64_NEXT + }, +}; + +const bfd_arch_info_type bfd_sh_arch = +{ + 32, /* 32 bits in a word. */ + 32, /* 32 bits in an address. */ + 8, /* 8 bits in a byte. */ + bfd_arch_sh, + bfd_mach_sh, + "sh", /* Architecture name. */ + "sh", /* Machine name. */ + 1, + TRUE, /* The default machine. */ + bfd_default_compatible, + bfd_default_scan, + bfd_arch_default_fill, + SH_NEXT +}; + + +/* This table defines the mappings from the BFD internal numbering + system to the opcodes internal flags system. + It is used by the functions defined below. + The prototypes for these SH specific functions are found in + sh-opc.h . */ + +static struct { unsigned long bfd_mach, arch, arch_up; } bfd_to_arch_table[] = +{ + { bfd_mach_sh, arch_sh1, arch_sh_up }, + { bfd_mach_sh2, arch_sh2, arch_sh2_up }, + { bfd_mach_sh2e, arch_sh2e, arch_sh2e_up }, + { bfd_mach_sh_dsp, arch_sh_dsp, arch_sh_dsp_up }, + { bfd_mach_sh2a, arch_sh2a, arch_sh2a_up }, + { bfd_mach_sh2a_nofpu, arch_sh2a_nofpu, arch_sh2a_nofpu_up }, + + { bfd_mach_sh2a_nofpu_or_sh4_nommu_nofpu, arch_sh2a_nofpu_or_sh4_nommu_nofpu, arch_sh2a_nofpu_or_sh4_nommu_nofpu_up }, + { bfd_mach_sh2a_nofpu_or_sh3_nommu, arch_sh2a_nofpu_or_sh3_nommu, arch_sh2a_nofpu_or_sh3_nommu_up }, + { bfd_mach_sh2a_or_sh4, arch_sh2a_or_sh4, arch_sh2a_or_sh4_up }, + { bfd_mach_sh2a_or_sh3e, arch_sh2a_or_sh3e, arch_sh2a_or_sh3e_up }, + + { bfd_mach_sh3, arch_sh3, arch_sh3_up }, + { bfd_mach_sh3_nommu, arch_sh3_nommu, arch_sh3_nommu_up }, + { bfd_mach_sh3_dsp, arch_sh3_dsp, arch_sh3_dsp_up }, + { bfd_mach_sh3e, arch_sh3e, arch_sh3e_up }, + { bfd_mach_sh4, arch_sh4, arch_sh4_up }, + { bfd_mach_sh4a, arch_sh4a, arch_sh4a_up }, + { bfd_mach_sh4al_dsp, arch_sh4al_dsp, arch_sh4al_dsp_up }, + { bfd_mach_sh4_nofpu, arch_sh4_nofpu, arch_sh4_nofpu_up }, + { bfd_mach_sh4_nommu_nofpu, arch_sh4_nommu_nofpu, arch_sh4_nommu_nofpu_up }, + { bfd_mach_sh4a_nofpu, arch_sh4a_nofpu, arch_sh4a_nofpu_up }, + { 0, 0, 0 } /* Terminator. */ +}; + + +/* Convert a BFD mach number into the right opcodes arch flags + using the table above. */ + +unsigned int +sh_get_arch_from_bfd_mach (unsigned long mach) +{ + int i = 0; + + while (bfd_to_arch_table[i].bfd_mach != 0) + if (bfd_to_arch_table[i].bfd_mach == mach) + return bfd_to_arch_table[i].arch; + else + i++; + + /* Machine not found. */ + BFD_FAIL(); + + return SH_ARCH_UNKNOWN_ARCH; +} + + +/* Convert a BFD mach number into a set of opcodes arch flags + describing all the compatible architectures (i.e. arch_up) + using the table above. */ + +unsigned int +sh_get_arch_up_from_bfd_mach (unsigned long mach) +{ + int i = 0; + + while (bfd_to_arch_table[i].bfd_mach != 0) + if (bfd_to_arch_table[i].bfd_mach == mach) + return bfd_to_arch_table[i].arch_up; + else + i++; + + /* Machine not found. */ + BFD_FAIL(); + + return SH_ARCH_UNKNOWN_ARCH; +} + + +/* Convert an arbitary arch_set - not necessarily corresponding + directly to anything in the table above - to the most generic + architecture which supports all the required features, and + return the corresponding BFD mach. */ + +unsigned long +sh_get_bfd_mach_from_arch_set (unsigned int arch_set) +{ + unsigned long result = 0; + unsigned int best = ~arch_set; + unsigned int co_mask = ~0; + int i = 0; + + /* If arch_set permits variants with no coprocessor then do not allow + the other irrelevant co-processor bits to influence the choice: + e.g. if dsp is disallowed by arch_set, then the algorithm would + prefer fpu variants over nofpu variants because they also disallow + dsp - even though the nofpu would be the most correct choice. + This assumes that EVERY fpu/dsp variant has a no-coprocessor + counter-part, or their non-fpu/dsp instructions do not have the + no co-processor bit set. */ + if (arch_set & arch_sh_no_co) + co_mask = ~(arch_sh_sp_fpu | arch_sh_dp_fpu | arch_sh_has_dsp); + + while (bfd_to_arch_table[i].bfd_mach != 0) + { + unsigned int try = bfd_to_arch_table[i].arch_up & co_mask; + + /* 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; +} |