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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 /bfd/elf32-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 'bfd/elf32-rx.c')
| -rw-r--r-- | bfd/elf32-rx.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/bfd/elf32-rx.c b/bfd/elf32-rx.c index b8c632e..8d71628 100644 --- a/bfd/elf32-rx.c +++ b/bfd/elf32-rx.c @@ -3086,6 +3086,9 @@ describe_flags (flagword flags) else strcat (buf, ", GCC ABI"); + if (flags & E_FLAG_RX_SINSNS_SET) + strcat (buf, flags & E_FLAG_RX_SINSNS_YES ? ", uses String instructions" : ", bans String instructions"); + return buf; } @@ -3112,8 +3115,22 @@ rx_elf_merge_private_bfd_data (bfd * ibfd, bfd * obfd) { flagword known_flags; + if (old_flags & E_FLAG_RX_SINSNS_SET) + { + if ((new_flags & E_FLAG_RX_SINSNS_SET) == 0) + { + new_flags &= ~ E_FLAG_RX_SINSNS_MASK; + new_flags |= (old_flags & E_FLAG_RX_SINSNS_MASK); + } + } + else if (new_flags & E_FLAG_RX_SINSNS_SET) + { + old_flags &= ~ E_FLAG_RX_SINSNS_MASK; + old_flags |= (new_flags & E_FLAG_RX_SINSNS_MASK); + } + known_flags = E_FLAG_RX_ABI | E_FLAG_RX_64BIT_DOUBLES - | E_FLAG_RX_DSP | E_FLAG_RX_PID; + | E_FLAG_RX_DSP | E_FLAG_RX_PID | E_FLAG_RX_SINSNS_MASK; if ((old_flags ^ new_flags) & known_flags) { |