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* mips.h: Assign 'm'/'M' codes to MIPS16e save/restore

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instructions.  Define MIPS16_ALL_ARGS and MIPS16_ALL_STATICS for
        save/restore encoding of the args field.

        * mips16-opc.c: Add MIPS16e save/restore opcodes.
        * mips-dis.c (print_mips16_insn_arg): Handle printing of 'm'/'M'
        codes for save/restore.

        * config/tc-mips.c (mips16_ip): Add handling of 'm' and 'M' codes
        for the MIPS16e save/restore instructions.

        * gas/mips/mips.exp: Run new save/restore tests.
        * gas/testsuite/gas/mips/mips16e-save.s: New test for generating
        different styles of save/restore instructions.
        * gas/testsuite/gas/mips/mips16e-save.d: New.
This commit is contained in:
Thiemo Seufer
2005-11-14 02:25:39 +00:00
parent eafa87ff3b
commit 0499d65b9b
11 changed files with 402 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
opcodes/ChangeLog
View File

@@ -1,3 +1,9 @@
2005-11-14 David Ung <davidu@mips.com>
* mips16-opc.c: Add MIPS16e save/restore opcodes.
* mips-dis.c (print_mips16_insn_arg): Handle printing of 'm'/'M'
codes for save/restore.
2005-11-10 Andreas Schwab <schwab@suse.de>
* m68k-dis.c (print_insn_m68k): Only match FPU insns with

86
opcodes/mips-dis.c
View File

@@ -1656,6 +1656,92 @@ print_mips16_insn_arg (char type,
}
break;
case 'm':
case 'M':
/* MIPS16e save/restore. */
{
int need_comma = 0;
int amask, args, statics;
int nsreg, smask;
int framesz;
int i, j;
l = l & 0x7f;
if (use_extend)
l |= extend << 16;
amask = (l >> 16) & 0xf;
if (amask == MIPS16_ALL_ARGS)
{
args = 4;
statics = 0;
}
else if (amask == MIPS16_ALL_STATICS)
{
args = 0;
statics = 4;
}
else
{
args = amask >> 2;
statics = amask & 3;
}
if (args > 0) {
(*info->fprintf_func) (info->stream, "%s", mips_gpr_names[4]);
if (args > 1)
(*info->fprintf_func) (info->stream, "-%s",
mips_gpr_names[4 + args - 1]);
need_comma = 1;
}
framesz = (((l >> 16) & 0xf0) | (l & 0x0f)) * 8;
if (framesz == 0 && !use_extend)
framesz = 128;
(*info->fprintf_func) (info->stream, "%s%d",
need_comma ? "," : "",
framesz);
if (l & 0x40) /* $ra */
(*info->fprintf_func) (info->stream, ",%s", mips_gpr_names[31]);
nsreg = (l >> 24) & 0x7;
smask = 0;
if (l & 0x20) /* $s0 */
smask |= 1 << 0;
if (l & 0x10) /* $s1 */
smask |= 1 << 1;
if (nsreg > 0) /* $s2-$s8 */
smask |= ((1 << nsreg) - 1) << 2;
/* Find first set static reg bit. */
for (i = 0; i < 9; i++)
{
if (smask & (1 << i))
{
(*info->fprintf_func) (info->stream, ",%s",
mips_gpr_names[i == 8 ? 30 : (16 + i)]);
/* Skip over string of set bits. */
for (j = i; smask & (2 << j); j++)
continue;
if (j > i)
(*info->fprintf_func) (info->stream, "-%s",
mips_gpr_names[j == 8 ? 30 : (16 + j)]);
i = j + 1;
}
}
/* Statics $ax - $a3. */
if (statics == 1)
(*info->fprintf_func) (info->stream, ",%s", mips_gpr_names[7]);
else if (statics > 0)
(*info->fprintf_func) (info->stream, ",%s-%s",
mips_gpr_names[7 - statics + 1],
mips_gpr_names[7]);
}
break;
default:
/* xgettext:c-format */
(*info->fprintf_func)

2
opcodes/mips16-opc.c
View File

@@ -226,6 +226,8 @@ const struct mips_opcode mips16_opcodes[] =
{"jalrc", "R,x", 0xe8c0, 0xf8ff, WR_31|RD_x|TRAP, 0, 0 },
{"jrc", "x", 0xe880, 0xf8ff, RD_x|TRAP, 0, 0 },
{"jrc", "R", 0xe8a0, 0xffff, RD_31|TRAP, 0, 0 },
{"restore", "M", 0x6400, 0xff80, WR_31|RD_SP|WR_SP|TRAP, 0, 0 },
{"save", "m", 0x6480, 0xff80, RD_31|RD_SP|WR_SP|TRAP, 0, 0 },
{"seb", "x", 0xe891, 0xf8ff, WR_x|RD_x, 0, 0 },
{"seh", "x", 0xe8b1, 0xf8ff, WR_x|RD_x, 0, 0 },
{"sew", "x", 0xe8d1, 0xf8ff, WR_x|RD_x, 0, I3 },