-/* BFD library support routines for the Hitachi-SH architecture.
- Copyright (C) 1993 Free Software Foundation, Inc.
+/* BFD library support routines for the Renesas / SuperH SH architecture.
+ Copyright (C) 1993-2020 Free Software Foundation, Inc.
Hacked by Steve Chamberlain of Cygnus Support.
-This file is part of BFD, the Binary File Descriptor library.
+ 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 2 of the License, or
-(at your option) any later version.
+ 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.
+ 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ 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 "bfd.h"
#include "sysdep.h"
+#include "bfd.h"
#include "libbfd.h"
+#include "../opcodes/sh-opc.h"
+
+#define N(NUMBER, PRINT, DEFAULT, NEXT) \
+ { \
+ 32, /* Bits in a word. */ \
+ 32, /* Bits in an address. */ \
+ 8, /* Bits in a byte. */ \
+ bfd_arch_sh, \
+ NUMBER, \
+ "sh", \
+ PRINT, \
+ 1, /* Section alignment power. */ \
+ DEFAULT, \
+ bfd_default_compatible, \
+ bfd_default_scan, \
+ bfd_arch_default_fill, \
+ NEXT, \
+ 0 /* Maximum offset of a reloc from the start of an insn. */ \
+ }
-static boolean
-scan_mach (info, string)
- const struct bfd_arch_info *info;
- const char *string;
+static const bfd_arch_info_type arch_info_struct[] =
{
- if (strcasecmp (info->printable_name, string) == 0)
- return true;
- return false;
-}
+ N (bfd_mach_sh2, "sh2", FALSE, arch_info_struct + 1),
+ N (bfd_mach_sh2e, "sh2e", FALSE, arch_info_struct + 2),
+ N (bfd_mach_sh_dsp, "sh-dsp", FALSE, arch_info_struct + 3),
+ N (bfd_mach_sh3, "sh3", FALSE, arch_info_struct + 4),
+ N (bfd_mach_sh3_nommu, "sh3-nommu", FALSE, arch_info_struct + 5),
+ N (bfd_mach_sh3_dsp, "sh3-dsp", FALSE, arch_info_struct + 6),
+ N (bfd_mach_sh3e, "sh3e", FALSE, arch_info_struct + 7),
+ N (bfd_mach_sh4, "sh4", FALSE, arch_info_struct + 8),
+ N (bfd_mach_sh4a, "sh4a", FALSE, arch_info_struct + 9),
+ N (bfd_mach_sh4al_dsp, "sh4al-dsp", FALSE, arch_info_struct + 10),
+ N (bfd_mach_sh4_nofpu, "sh4-nofpu", FALSE, arch_info_struct + 11),
+ N (bfd_mach_sh4_nommu_nofpu, "sh4-nommu-nofpu", FALSE, arch_info_struct + 12),
+ N (bfd_mach_sh4a_nofpu, "sh4a-nofpu", FALSE, arch_info_struct + 13),
+ N (bfd_mach_sh2a, "sh2a", FALSE, arch_info_struct + 14),
+ N (bfd_mach_sh2a_nofpu, "sh2a-nofpu", FALSE, arch_info_struct + 15),
+ N (bfd_mach_sh2a_nofpu_or_sh4_nommu_nofpu, "sh2a-nofpu-or-sh4-nommu-nofpu", FALSE, arch_info_struct + 16),
+ N (bfd_mach_sh2a_nofpu_or_sh3_nommu, "sh2a-nofpu-or-sh3-nommu", FALSE, arch_info_struct + 17),
+ N (bfd_mach_sh2a_or_sh4, "sh2a-or-sh4", FALSE, arch_info_struct + 18),
+ N (bfd_mach_sh2a_or_sh3e, "sh2a-or-sh3e", FALSE, NULL)
+};
+const bfd_arch_info_type bfd_sh_arch =
+ N (bfd_mach_sh, "sh", TRUE, arch_info_struct + 0);
-#if 0
-/* This routine is provided two arch_infos and returns whether
- they'd be compatible */
+/* 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 const bfd_arch_info_type *
-compatible (a,b)
- const bfd_arch_info_type *a;
- const bfd_arch_info_type *b;
+static struct { unsigned long bfd_mach, arch, arch_up; } bfd_to_arch_table[] =
{
- if (a->arch != b->arch || a->mach != b->mach)
- return NULL;
- return a;
+ { 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;
}
-#endif
-#define SH_NEXT &arch_info_struct[0]
-#define SH3_NEXT &arch_info_struct[1]
-#define SH3E_NEXT NULL
-static const bfd_arch_info_type arch_info_struct[] =
+/* 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)
{
- {
- 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", /* arch_name */
- "sh3", /* printable name */
- 1,
- false, /* not the default */
- bfd_default_compatible,
- scan_mach,
- 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_sh3e,
- "sh", /* arch_name */
- "sh3e", /* printable name */
- 1,
- false, /* not the default */
- bfd_default_compatible,
- scan_mach,
- SH3E_NEXT
- },
-};
+ int i = 0;
-const bfd_arch_info_type bfd_sh_arch =
+ 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)
{
- 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", /* arch_name */
- "sh", /* printable name */
- 1,
- true, /* the default machine */
- bfd_default_compatible,
- scan_mach,
- SH_NEXT
-};
+ 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;
+}
projects / deliverable / binutils-gdb.git / blobdiff