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Diffstat (limited to 'bfd/cpu-m68k.c')
-rw-r--r--bfd/cpu-m68k.c157
1 files changed, 144 insertions, 13 deletions
diff --git a/bfd/cpu-m68k.c b/bfd/cpu-m68k.c
index e2ac095d50..93b60f969b 100644
--- a/bfd/cpu-m68k.c
+++ b/bfd/cpu-m68k.c
@@ -1,6 +1,6 @@
/* BFD library support routines for architectures.
Copyright 1990, 1991, 1992, 1993, 1994, 1997, 1998, 2000, 2001, 2002,
- 2003, 2004 Free Software Foundation, Inc.
+ 2003, 2004, 2006 Free Software Foundation, Inc.
Hacked by Steve Chamberlain of Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
@@ -22,6 +22,7 @@
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
+#include "opcode/m68k.h"
#define N(name, print,d,next) \
{ 32, 32, 8, bfd_arch_m68k, name, "m68k",print,2,d,bfd_default_compatible,bfd_default_scan, next, }
@@ -34,19 +35,149 @@ static const bfd_arch_info_type arch_info_struct[] =
N(bfd_mach_m68020, "m68k:68020", FALSE, &arch_info_struct[4]),
N(bfd_mach_m68030, "m68k:68030", FALSE, &arch_info_struct[5]),
N(bfd_mach_m68040, "m68k:68040", FALSE, &arch_info_struct[6]),
- N(bfd_mach_cpu32, "m68k:cpu32", FALSE, &arch_info_struct[7]),
- N(bfd_mach_mcf5200, "m68k:5200", FALSE, &arch_info_struct[8]),
- N(bfd_mach_mcf5206e,"m68k:5206e", FALSE, &arch_info_struct[9]),
- N(bfd_mach_mcf5307, "m68k:5307", FALSE, &arch_info_struct[10]),
- N(bfd_mach_mcf5407, "m68k:5407", FALSE, &arch_info_struct[11]),
- N(bfd_mach_m68060, "m68k:68060", FALSE, &arch_info_struct[12]),
- N(bfd_mach_mcf528x, "m68k:528x", FALSE, &arch_info_struct[13]),
- N(bfd_mach_mcf521x, "m68k:521x", FALSE, &arch_info_struct[14]),
- N(bfd_mach_mcf5249, "m68k:5249", FALSE, &arch_info_struct[15]),
- N(bfd_mach_mcf547x, "m68k:547x", FALSE, &arch_info_struct[16]),
- N(bfd_mach_mcf548x, "m68k:548x", FALSE, &arch_info_struct[17]),
- N(bfd_mach_mcfv4e, "m68k:cfv4e", FALSE, 0),
+ N(bfd_mach_m68060, "m68k:68060", FALSE, &arch_info_struct[7]),
+ N(bfd_mach_cpu32, "m68k:cpu32", FALSE, &arch_info_struct[8]),
+
+ /* Various combinations of CF architecture features */
+ N(bfd_mach_mcf_isa_a, "m68k:isa-a",
+ FALSE, &arch_info_struct[9]),
+ N(bfd_mach_mcf_isa_a_div, "m68k:isa-a:div",
+ FALSE, &arch_info_struct[10]),
+ N(bfd_mach_mcf_isa_a_div_mac, "m68k:isa-a:div:mac",
+ FALSE, &arch_info_struct[11]),
+ N(bfd_mach_mcf_isa_a_div_emac, "m68k:isa-a:div:emac",
+ FALSE, &arch_info_struct[12]),
+ N(bfd_mach_mcf_isa_aplus, "m68k:isa-a+",
+ FALSE, &arch_info_struct[13]),
+ N(bfd_mach_mcf_isa_aplus_mac, "m68k:isa-a+:mac",
+ FALSE, &arch_info_struct[14]),
+ N(bfd_mach_mcf_isa_aplus_emac, "m68k:isa-a+:emac",
+ FALSE, &arch_info_struct[15]),
+ N(bfd_mach_mcf_isa_aplus_usp, "m68k:isa-a+:usp",
+ FALSE, &arch_info_struct[16]),
+ N(bfd_mach_mcf_isa_aplus_usp_mac, "m68k:isa-a+:usp:mac",
+ FALSE, &arch_info_struct[17]),
+ N(bfd_mach_mcf_isa_aplus_usp_emac, "m68k:isa-a+:usp:emac",
+ FALSE, &arch_info_struct[18]),
+ N(bfd_mach_mcf_isa_b, "m68k:isa-b",
+ FALSE, &arch_info_struct[19]),
+ N(bfd_mach_mcf_isa_b_mac, "m68k:isa-b:mac",
+ FALSE, &arch_info_struct[20]),
+ N(bfd_mach_mcf_isa_b_emac, "m68k:isa-b:emac",
+ FALSE, &arch_info_struct[21]),
+ N(bfd_mach_mcf_isa_b_usp_float, "m68k:isa-b:usp:float",
+ FALSE, &arch_info_struct[22]),
+ N(bfd_mach_mcf_isa_b_usp_float_mac, "m68k:isa-b:usp:float:mac",
+ FALSE, &arch_info_struct[23]),
+ N(bfd_mach_mcf_isa_b_usp_float_emac, "m68k:isa-b:usp:float:emac",
+ FALSE, &arch_info_struct[24]),
+
+ /* Legacy names for CF architectures */
+ N(bfd_mach_mcf_isa_a, "m68k:5200", FALSE, &arch_info_struct[25]),
+ N(bfd_mach_mcf_isa_a_div_mac,"m68k:5206e", FALSE, &arch_info_struct[26]),
+ N(bfd_mach_mcf_isa_a_div_mac, "m68k:5307", FALSE, &arch_info_struct[27]),
+ N(bfd_mach_mcf_isa_b_mac, "m68k:5407", FALSE, &arch_info_struct[28]),
+ N(bfd_mach_mcf_isa_aplus_usp_emac, "m68k:528x",
+ FALSE, &arch_info_struct[29]),
+ N(bfd_mach_mcf_isa_aplus_usp_emac, "m68k:521x",
+ FALSE, &arch_info_struct[30]),
+ N(bfd_mach_mcf_isa_a_div_emac, "m68k:5249", FALSE, &arch_info_struct[31]),
+ N(bfd_mach_mcf_isa_b_usp_float_emac, "m68k:547x",
+ FALSE, &arch_info_struct[32]),
+ N(bfd_mach_mcf_isa_b_usp_float_emac, "m68k:548x",
+ FALSE, &arch_info_struct[33]),
+ N(bfd_mach_mcf_isa_b_usp_float_emac, "m68k:cfv4e", FALSE, 0),
};
const bfd_arch_info_type bfd_m68k_arch =
N(0, "m68k", TRUE, &arch_info_struct[0]);
+
+/* Table indexed by bfd_mach_arch number indicating which
+ architectural features are supported. */
+static const unsigned m68k_arch_features[] =
+{
+ 0,
+ m68000|m68881|m68851,
+ m68000|m68881|m68851,
+ m68010|m68881|m68851,
+ m68020|m68881|m68851,
+ m68030|m68881|m68851,
+ m68040|m68881|m68851,
+ m68060|m68881|m68851,
+ cpu32|m68881,
+ mcfisa_a,
+ mcfisa_a|mcfhwdiv,
+ mcfisa_a|mcfhwdiv|mcfmac,
+ mcfisa_a|mcfhwdiv|mcfemac,
+ mcfisa_a|mcfisa_aa|mcfhwdiv,
+ mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac,
+ mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac,
+ mcfisa_a|mcfisa_aa|mcfhwdiv|mcfusp,
+ mcfisa_a|mcfisa_aa|mcfhwdiv|mcfusp|mcfmac,
+ mcfisa_a|mcfisa_aa|mcfhwdiv|mcfusp|mcfemac,
+ mcfisa_a|mcfhwdiv|mcfisa_b,
+ mcfisa_a|mcfhwdiv|mcfisa_b|mcfmac,
+ mcfisa_a|mcfhwdiv|mcfisa_b|mcfemac,
+ mcfisa_a|mcfhwdiv|mcfisa_b|mcfusp|cfloat,
+ mcfisa_a|mcfhwdiv|mcfisa_b|mcfusp|cfloat|mcfmac,
+ mcfisa_a|mcfhwdiv|mcfisa_b|mcfusp|cfloat|mcfemac,
+};
+
+/* Return the count of bits set in MASK */
+static unsigned
+bit_count (unsigned mask)
+{
+ unsigned ix;
+
+ for (ix = 0; mask; ix++)
+ /* Clear the LSB set */
+ mask ^= mask & -mask;
+ return ix;
+}
+
+/* Return the architectural features supported by MACH */
+
+unsigned
+bfd_m68k_mach_to_features (int mach)
+{
+ if ((unsigned)mach
+ >= sizeof (m68k_arch_features) / sizeof (m68k_arch_features[0]))
+ mach = 0;
+ return m68k_arch_features[mach];
+}
+
+/* Return the bfd machine that most closely represents the
+ architectural features. We find the machine with the smallest
+ number of additional features. If there is no such machine, we
+ find the one with the smallest number of missing features. */
+
+int bfd_m68k_features_to_mach (unsigned features)
+{
+ int superset = 0, subset = 0;
+ unsigned extra = 99, missing = 99;
+ unsigned ix;
+
+ for (ix = 0;
+ ix != sizeof (m68k_arch_features) / sizeof (m68k_arch_features[0]);
+ ix++)
+ {
+ unsigned this_extra, this_missing;
+
+ if (m68k_arch_features[ix] == features)
+ return ix;
+ this_extra = bit_count (m68k_arch_features[ix] & ~features);
+ if (this_extra < extra)
+ {
+ extra = this_extra;
+ superset = ix;
+ }
+
+ this_missing = bit_count (features & ~m68k_arch_features[ix]);
+ if (this_missing < missing)
+ {
+ missing = this_missing;
+ superset = ix;
+ }
+ }
+ return superset ? superset : subset;
+}
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