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| author | Maciej W. Rozycki <macro@imgtec.com> | 2016-01-18 21:29:37 +0000 |
|---|---|---|
| committer | Maciej W. Rozycki <macro@imgtec.com> | 2016-01-18 22:19:54 +0000 |
| commit | 100b4f2e9f65565e3e3e484162c4474effc54be8 (patch) | |
| tree | 373155614842784f25b2f1a5383a7c88f852a476 /gas | |
| parent | 3d304f48cafbff4b7a1c0a9d338fb20aa4e4934b (diff) | |
| download | gdb-100b4f2e9f65565e3e3e484162c4474effc54be8.zip gdb-100b4f2e9f65565e3e3e484162c4474effc54be8.tar.gz gdb-100b4f2e9f65565e3e3e484162c4474effc54be8.tar.bz2 | |
MIPS: Remove remnants of 48-bit microMIPS instruction support
The POOL48A major opcode was defined in early revisions of the 64-bit
microMIPS ISA, has never been implemented, and was removed before the
64-bit microMIPS ISA specification[1] has been finalized.
This complements commit a6c7053929dd ("MIPS/opcodes: Remove microMIPS
48-bit LI instruction").
References:
[1] "MIPS Architecture for Programmers, Volume II-B: The microMIPS64
Instruction Set", MIPS Technologies, Inc., Document Number: MD00594,
Revision 3.06, October 17, 2012, Table 6.2 "microMIPS64 Encoding of
Major Opcode Field", p. 578
gas/
* config/tc-mips.c (micromips_insn_length): Remove the mention
of 48-bit microMIPS instructions.
gdb/
* mips-tdep.c (mips_insn_size): Remove 48-bit microMIPS
instruction support.
(micromips_next_pc): Likewise.
(micromips_scan_prologue): Likewise.
(micromips_deal_with_atomic_sequence): Likewise.
(micromips_stack_frame_destroyed_p): Likewise.
(mips_breakpoint_from_pc): Likewise.
opcodes/
* mips-dis.c (print_insn_micromips): Remove 48-bit microMIPS
instruction support.
Diffstat (limited to 'gas')
| -rw-r--r-- | gas/ChangeLog | 5 | ||||
| -rw-r--r-- | gas/config/tc-mips.c | 6 |
2 files changed, 7 insertions, 4 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog index 1c0e224..a905d6f 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,3 +1,8 @@ +2016-01-18 Maciej W. Rozycki <macro@imgtec.com> + + * config/tc-mips.c (micromips_insn_length): Remove the mention + of 48-bit microMIPS instructions. + 2016-01-18 Alan Modra <amodra@gmail.com> * configure: Regenerate. diff --git a/gas/config/tc-mips.c b/gas/config/tc-mips.c index 859ddc6..d577774 100644 --- a/gas/config/tc-mips.c +++ b/gas/config/tc-mips.c @@ -2089,10 +2089,8 @@ mips_lookup_ase (const char *name) } /* Return the length of a microMIPS instruction in bytes. If bits of - the mask beyond the low 16 are 0, then it is a 16-bit instruction. - Otherwise assume a 32-bit instruction; 48-bit instructions (0x1f - major opcode) will require further modifications to the opcode - table. */ + the mask beyond the low 16 are 0, then it is a 16-bit instruction, + otherwise it is a 32-bit instruction. */ static inline unsigned int micromips_insn_length (const struct mips_opcode *mo) |