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* include/opcode/tic6x.h: add tic6x_coding_dreg_(msb|lsb) field coding type in 

order to encode separately the msb and lsb of a register pair ; this will be
needed to encode the opcodes the same
way as Ti assembler does.

* gas/config/tc-tic6x.c: handle tic6x_coding_dreg_(msb|lsb)  field coding types
and use it to encode register pair numbers when required.

* opcodes/tic6x-dis.c: decodes opcodes that have individual msb and lsb halves
in src1 & src2 fields ; discard the src1 (lsb) value and only use src2 (msb),
discarding bit 0, to follow what Ti SDK does in that case as any value in the
src1 field yields the same output with SDK disassembler.

* include/opcode/tic6x-opcode-table.h: modify absdp, dpint, dpsp, dptrunc,
rcpdp and rsqrdp opcodes to use the new field coding types.

* gas/testsuite/gas/tic6x/insns-c674x.d, gas/testsuite/gas/tic6x/insns-c674x.s
: add test case for the newly generated opcode but keep the old ones as they
seem legit as per Ti disassembler output.
This commit is contained in:
Nick Clifton 2013-03-20 16:36:34 +00:00
parent 744f64fded
commit de2e02904e
3 changed files with 36 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
include/opcode/ChangeLog
View File

@ -1,3 +1,13 @@
2013-03-20 Alexis Deruelle <alexis.deruelle@gmail.com>
PR gas/15095
* tic6x.h (enum tic6x_coding_method): Add
tic6x_coding_dreg_(msb|lsb) field coding type in order to encode
separately the msb and lsb of a register pair. This is needed to
encode the opcodes in the same way as TI assembler does.
* tic6x-opcode-table.h: Modify absdp, dpint, dpsp, dptrunc, rcpdp
and rsqrdp opcodes to use the new field coding types.
2013-03-11 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
* arm.h (CRC_EXT_ARMV8): New constant.

33
include/opcode/tic6x-opcode-table.h
View File

@ -1,6 +1,5 @@
/* TI C6X opcode table.
Copyright 2010, 2011
Free Software Foundation, Inc.
Copyright 2010-2013 Free Software Foundation, Inc.
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
@ -129,9 +128,10 @@ INSN(abs2, l, unary, 1cycle, C64X, 0,
ENC(dst, reg, 1)))
INSN(absdp, s, 1_or_2_src, 2cycle_dp, C67X, TIC6X_FLAG_NO_CROSS,
FIX3(FIX(op, 0x2c), FIX(x, 0), FIX(src1, 0)),
FIX2(FIX(op, 0x2c), FIX(x, 0)),
OP2(ORREGD1, OWREGD12),
ENC3(ENC(s, fu, 0), ENC(src2, reg, 0), ENC(dst, reg, 1)))
ENC4(ENC(s, fu, 0), ENC(src2, regpair_msb, 0), ENC(src1, regpair_lsb, 0),
ENC(dst, reg, 1)))
INSN(abssp, s, unary, 1cycle, C67X, 0,
FIX1(FIX(op, 0)),
@ -916,19 +916,22 @@ INSN(dpackx2, l, 1_or_2_src_noncond, 1cycle, C64XP, 0,
ENC(src2, reg, 1), ENC(dst, reg, 2)))
INSN(dpint, l, 1_or_2_src, 4cycle, C67X, TIC6X_FLAG_NO_CROSS,
FIX3(FIX(op, 0x8), FIX(x, 0), FIX(src1, 0)),
FIX2(FIX(op, 0x8), FIX(x, 0)),
OP2(ORREGD1, OWREG4),
ENC3(ENC(s, fu, 0), ENC(src2, reg, 0), ENC(dst, reg, 1)))
ENC4(ENC(s, fu, 0), ENC(src2, regpair_msb, 0), ENC(src1, regpair_lsb, 0),
ENC(dst, reg, 1)))
INSN(dpsp, l, 1_or_2_src, 4cycle, C67X, TIC6X_FLAG_NO_CROSS,
FIX3(FIX(op, 0x9), FIX(x, 0), FIX(src1, 0)),
FIX2(FIX(op, 0x9), FIX(x, 0)),
OP2(ORREGD1, OWREG4),
ENC3(ENC(s, fu, 0), ENC(src2, reg, 0), ENC(dst, reg, 1)))
ENC4(ENC(s, fu, 0), ENC(src2, regpair_msb, 0), ENC(src1, regpair_lsb, 0),
ENC(dst, reg, 1)))
INSN(dptrunc, l, 1_or_2_src, 4cycle, C67X, TIC6X_FLAG_NO_CROSS,
FIX3(FIX(op, 0x1), FIX(x, 0), FIX(src1, 0)),
FIX2(FIX(op, 0x1), FIX(x, 0)),
OP2(ORREGD1, OWREG4),
ENC3(ENC(s, fu, 0), ENC(src2, reg, 0), ENC(dst, reg, 1)))
ENC4(ENC(s, fu, 0), ENC(src2, regpair_msb, 0), ENC(src1, regpair_lsb, 0),
ENC(dst, reg, 1)))
INSN(ext, s, field, 1cycle, C62X, TIC6X_FLAG_NO_CROSS,
FIX1(FIX(op, 0x1)),
@ -1617,9 +1620,10 @@ INSN(packl4, l, 1_or_2_src, 1cycle, C64X, 0,
ENC(src2, reg, 1), ENC(dst, reg, 2)))
INSN(rcpdp, s, 1_or_2_src, 2cycle_dp, C67X, TIC6X_FLAG_NO_CROSS,
FIX3(FIX(op, 0x2d), FIX(x, 0), FIX(src1, 0)),
FIX2(FIX(op, 0x2d), FIX(x, 0)),
OP2(ORREGD1, OWREGD12),
ENC3(ENC(s, fu, 0), ENC(src2, reg, 0), ENC(dst, reg, 1)))
ENC4(ENC(s, fu, 0), ENC(src2, regpair_msb, 0), ENC(src1, regpair_lsb, 0),
ENC(dst, reg, 1)))
INSN(rcpsp, s, 1_or_2_src, 1cycle, C67X, 0,
FIX2(FIX(op, 0x3d), FIX(src1, 0)),
@ -1677,9 +1681,10 @@ INSN(rpack2, s, ext_1_or_2_src_noncond, 1cycle, C64XP, 0,
ENC(src2, reg, 1), ENC(dst, reg, 2)))
INSN(rsqrdp, s, 1_or_2_src, 2cycle_dp, C67X, TIC6X_FLAG_NO_CROSS,
FIX3(FIX(op, 0x2e), FIX(x, 0), FIX(src1, 0)),
FIX2(FIX(op, 0x2e), FIX(x, 0)),
OP2(ORREGD1, OWREGD12),
ENC3(ENC(s, fu, 0), ENC(src2, reg, 0), ENC(dst, reg, 1)))
ENC4(ENC(s, fu, 0), ENC(src2, regpair_msb, 0), ENC(src1, regpair_lsb, 0),
ENC(dst, reg, 1)))
INSN(rsqrsp, s, 1_or_2_src, 1cycle, C67X, 0,
FIX2(FIX(op, 0x3e), FIX(src1, 0)),

9
include/opcode/tic6x.h
View File

@ -1,6 +1,5 @@
/* TI C6X opcode information.
Copyright 2010, 2011
Free Software Foundation, Inc.
Copyright 2010-2013 Free Software Foundation, Inc.
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
@ -380,6 +379,12 @@ typedef enum
the field. When applied to a memory reference, encode the base
register. */
tic6x_coding_reg,
/* Encode the register-pair's lsb (even register) for instructions
that use src1 as port for loading lsb of double-precision
operand value (absdp, dpint, dpsp, dptrunc, rcpdp, rsqrdp). */
tic6x_coding_regpair_lsb,
/* Encode the register-pair's msb (odd register), see above. */
tic6x_coding_regpair_msb,
/* Store 0 for register B14, 1 for register B15. When applied to
a memory reference, encode the base register. */
tic6x_coding_areg,