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| author | Nick Clifton <nickc@redhat.com> | 2015-04-09 12:48:37 +0100 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2015-04-09 12:48:37 +0100 |
| commit | 3525236c57a64fdbb534671fd2b16f9f846d36f3 (patch) | |
| tree | 9b1b9e0a444216011509526254fccedcf34ca1c5 /gas/config/tc-rx.c | |
| parent | 5a2d4533e2b9cc9c069d47071013cb30f1e0fc7e (diff) | |
| download | gdb-3525236c57a64fdbb534671fd2b16f9f846d36f3.zip gdb-3525236c57a64fdbb534671fd2b16f9f846d36f3.tar.gz gdb-3525236c57a64fdbb534671fd2b16f9f846d36f3.tar.bz2 | |
Add support to the RX toolchain to restrict the use of string instructions.
bfd * elf32-rx.c (describe_flags): Report the settings of the string
insn using bits.
(rx_elf_merge_private_bfd_data): Handle merging of the string insn
using bits.
bin * readelf.c (get_machine_flags): Report the setting of the string
insn using bits.
gas * config/tc-rx.c (enum options): Add OPTION_DISALLOW_STRING_INSNS.
(md_longopts): Add -mno-allow-string-insns.
(md_parse_option): Handle -mno-allow-string-insns.
(md_show_usage): Mention -mno-allow-string-insns.
(rx_note_string_insn_use): New function. Produces an error
message if a string insn is used when it is not allowed.
* config/rx-parse.y (SCMPU): Call rx_note_string_insn_use.
(SMOVU, SMOVB, SMOVF, SUNTIL, SWHILE, RMPA): Likewise.
* config/rx-defs.h (rx_note_string_insn_use): Prototype.
* doc/c-rx.texi: Document -mno-allow-string-insns.
elf * rx.h (E_FLAG_RX_SINSNS_SET): New bit in e_flags field.
(E_FLAG_RX_SINSNS_YES): Likewise.
(E_FLAG_RX_SINSNS_MASK): New define.
Diffstat (limited to 'gas/config/tc-rx.c')
| -rw-r--r-- | gas/config/tc-rx.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/gas/config/tc-rx.c b/gas/config/tc-rx.c index 2dec69f..4e58f88 100644 --- a/gas/config/tc-rx.c +++ b/gas/config/tc-rx.c @@ -73,6 +73,7 @@ enum options OPTION_USES_GCC_ABI, OPTION_USES_RX_ABI, OPTION_CPU, + OPTION_DISALLOW_STRING_INSNS, }; #define RX_SHORTOPTS "" @@ -99,7 +100,8 @@ struct option md_longopts[] = {"mint-register", required_argument, NULL, OPTION_INT_REGS}, {"mgcc-abi", no_argument, NULL, OPTION_USES_GCC_ABI}, {"mrx-abi", no_argument, NULL, OPTION_USES_RX_ABI}, - {"mcpu",required_argument,NULL,OPTION_CPU}, + {"mcpu", required_argument, NULL, OPTION_CPU}, + {"mno-allow-string-insns", no_argument, NULL, OPTION_DISALLOW_STRING_INSNS}, {NULL, no_argument, NULL, 0} }; size_t md_longopts_size = sizeof (md_longopts); @@ -173,6 +175,10 @@ md_parse_option (int c ATTRIBUTE_UNUSED, char * arg ATTRIBUTE_UNUSED) break; } return 1; + + case OPTION_DISALLOW_STRING_INSNS: + elf_flags |= E_FLAG_RX_SINSNS_SET | E_FLAG_RX_SINSNS_NO; + return 1; } return 0; } @@ -192,6 +198,7 @@ md_show_usage (FILE * stream) fprintf (stream, _(" --mpid\n")); fprintf (stream, _(" --mint-register=<value>\n")); fprintf (stream, _(" --mcpu=<rx100|rx200|rx600|rx610>\n")); + fprintf (stream, _(" --mno-allow-string-insns")); } static void @@ -2623,6 +2630,14 @@ tc_gen_reloc (asection * sec ATTRIBUTE_UNUSED, fixS * fixp) return reloc; } +void +rx_note_string_insn_use (void) +{ + if ((elf_flags & E_FLAG_RX_SINSNS_MASK) == (E_FLAG_RX_SINSNS_SET | E_FLAG_RX_SINSNS_NO)) + as_bad (_("Use of an RX string instruction detected in a file being assembled without string instruction support")); + elf_flags |= E_FLAG_RX_SINSNS_SET | E_FLAG_RX_SINSNS_YES; +} + /* Set the ELF specific flags. */ void |