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

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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
gas/ChangeLog
View File

@ -1,3 +1,8 @@
2005-11-14 David Ung <davidu@mips.com>
* config/tc-mips.c (mips16_ip): Add handling of 'm' and 'M' codes
for the MIPS16e save/restore instructions.
2005-11-11 Jan Beulich <jbeulich@novell.com>
* doc/Makefile.am: Make asconfig.texi writeable before trying

180
gas/config/tc-mips.c
View File

@ -9303,6 +9303,8 @@ do_msbd:
}
}
#define SKIP_SPACE_TABS(S) { while (*(S) == ' ' || *(S) == '\t') ++(S); }
/* This routine assembles an instruction into its binary format when
assembling for the mips16. As a side effect, it sets one of the
global variables imm_reloc or offset_reloc to the type of
@ -9836,6 +9838,184 @@ mips16_ip (char *str, struct mips_cl_insn *ip)
}
continue;
case 'm': /* Register list for save insn. */
case 'M': /* Register list for restore insn. */
{
int opcode = 0;
int framesz = 0, seen_framesz = 0;
int args = 0, statics = 0, sregs = 0;
while (*s != '\0')
{
unsigned int reg1, reg2;
SKIP_SPACE_TABS (s);
while (*s == ',')
++s;
SKIP_SPACE_TABS (s);
my_getExpression (&imm_expr, s);
if (imm_expr.X_op == O_constant)
{
/* Handle the frame size. */
if (seen_framesz)
{
as_bad (_("more than one frame size in list"));
break;
}
seen_framesz = 1;
framesz = imm_expr.X_add_number;
imm_expr.X_op = O_absent;
s = expr_end;
continue;
}
if (*s != '$')
{
as_bad (_("can't parse register list"));
break;
}
++s;
reg1 = 0;
while (ISDIGIT (*s))
{
reg1 *= 10;
reg1 += *s - '0';
++s;
}
SKIP_SPACE_TABS (s);
if (*s != '-')
reg2 = reg1;
else
{
++s;
if (*s != '$')
{
as_bad (_("can't parse register list"));
break;
}
++s;
reg2 = 0;
while (ISDIGIT (*s))
{
reg2 *= 10;
reg2 += *s - '0';
++s;
}
}
while (reg1 <= reg2)
{
if (reg1 >= 4 && reg1 <= 7)
{
if (c == 'm' && !seen_framesz)
/* args $a0-$a3 */
args |= 1 << (reg1 - 4);
else
/* statics $a0-$a3 */
statics |= 1 << (reg1 - 4);
}
else if ((reg1 >= 16 && reg1 <= 23) || reg1 == 30)
{
/* $s0-$s8 */
sregs |= 1 << ((reg1 == 30) ? 8 : (reg1 - 16));
}
else if (reg1 == 31)
{
/* Add $ra to insn. */
opcode |= 0x40;
}
else
{
as_bad (_("unexpected register in list"));
break;
}
if (++reg1 == 24)
reg1 = 30;
}
}
/* Encode args/statics combination. */
if (args & statics)
as_bad (_("arg/static registers overlap"));
else if (args == 0xf)
/* All $a0-$a3 are args. */
opcode |= MIPS16_ALL_ARGS << 16;
else if (statics == 0xf)
/* All $a0-$a3 are statics. */
opcode |= MIPS16_ALL_STATICS << 16;
else
{
int narg = 0, nstat = 0;
/* Count arg registers. */
while (args & 0x1)
{
args >>= 1;
narg++;
}
if (args != 0)
as_bad (_("invalid arg register list"));
/* Count static registers. */
while (statics & 0x8)
{
statics = (statics << 1) & 0xf;
nstat++;
}
if (statics != 0)
as_bad (_("invalid static register list"));
/* Encode args/statics. */
opcode |= ((narg << 2) | nstat) << 16;
}
/* Encode $s0/$s1. */
if (sregs & (1 << 0)) /* $s0 */
opcode |= 0x20;
if (sregs & (1 << 1)) /* $s1 */
opcode |= 0x10;
sregs >>= 2;
if (sregs != 0)
{
/* Count regs $s2-$s8. */
int nsreg = 0;
while (sregs & 1)
{
sregs >>= 1;
nsreg++;
}
if (sregs != 0)
as_bad (_("invalid static register list"));
/* Encode $s2-$s8. */
opcode |= nsreg << 24;
}
/* Encode frame size. */
if (!seen_framesz)
as_bad (_("missing frame size"));
else if ((framesz & 7) != 0 || framesz < 0
|| framesz > 0xff * 8)
as_bad (_("invalid frame size"));
else if (framesz != 128 || (opcode >> 16) != 0)
{
framesz /= 8;
opcode |= (((framesz & 0xf0) << 16)
| (framesz & 0x0f));
}
/* Finally build the instruction. */
if ((opcode >> 16) != 0 || framesz == 0)
{
ip->use_extend = TRUE;
ip->extend = opcode >> 16;
}
ip->insn_opcode |= opcode & 0x7f;
}
continue;
case 'e': /* extend code */
my_getExpression (&imm_expr, s);
check_absolute_expr (ip, &imm_expr);

7
gas/testsuite/ChangeLog
View File

@ -1,3 +1,10 @@
2005-11-14 David Ung <davidu@mips.com>
* 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.
2005-11-10 Jan Beulich <jbeulich@novell.com>
* gas/i386/intelbad.d: Add tests for ill registers in brackets.

5
gas/testsuite/gas/mips/mips.exp
View File

@ -771,5 +771,8 @@ if { [istarget mips*-*-*] } then {
run_dump_test "mips16-dwarf2-n32"
}
}
if { !$no_mips16 } { run_dump_test "mips16e-jrc" }
if { !$no_mips16 } {
run_dump_test "mips16e-jrc"
run_dump_test "mips16e-save"
}
}

43
gas/testsuite/gas/mips/mips16e-save.d Normal file
View File

@ -0,0 +1,43 @@
#objdump: -dr -mmips:isa32 -mmips:16
#as: -march=mips32 -mips16
#name: mips16e save/restore
.*: +file format .*mips.*
Disassembly of section .text:
00000000 <func>:
0:[ ]+6481[ ]+save[ ]+8
2:[ ]+64c2[ ]+save[ ]+16,ra
4:[ ]+64a3[ ]+save[ ]+24,s0
6:[ ]+6494[ ]+save[ ]+32,s1
8:[ ]+64b5[ ]+save[ ]+40,s0-s1
a:[ ]+64e6[ ]+save[ ]+48,ra,s0
c:[ ]+64d7[ ]+save[ ]+56,ra,s1
e:[ ]+64f8[ ]+save[ ]+64,ra,s0-s1
10:[ ]+64f9[ ]+save[ ]+72,ra,s0-s1
12:[ ]+64fa[ ]+save[ ]+80,ra,s0-s1
14:[ ]+64fb[ ]+save[ ]+88,ra,s0-s1
16:[ ]+64f0[ ]+save[ ]+128,ra,s0-s1
18:[ ]+f010 6481[ ]+save[ ]+136
1c:[ ]+f010 64c2[ ]+save[ ]+144,ra
20:[ ]+f010 64b3[ ]+save[ ]+152,s0-s1
24:[ ]+f100 6488[ ]+save[ ]+64,s2
28:[ ]+f600 6489[ ]+save[ ]+72,s2-s7
2c:[ ]+f700 648a[ ]+save[ ]+80,s2-s8
30:[ ]+f700 64bb[ ]+save[ ]+88,s0-s8
34:[ ]+f001 6488[ ]+save[ ]+64,a3
38:[ ]+f012 6480[ ]+save[ ]+128,a2-a3
3c:[ ]+f02b 6480[ ]+save[ ]+256,a0-a3
40:[ ]+f024 6480[ ]+save[ ]+a0,256
44:[ ]+f018 6480[ ]+save[ ]+a0-a1,128
48:[ ]+f00e 6488[ ]+save[ ]+a0-a3,64
4c:[ ]+f015 6480[ ]+save[ ]+a0,128,a3
50:[ ]+f017 6480[ ]+save[ ]+a0,128,a1-a3
54:[ ]+f01a 6480[ ]+save[ ]+a0-a1,128,a2-a3
58:[ ]+f01d 6480[ ]+save[ ]+a0-a2,128,a3
5c:[ ]+f71a 64f0[ ]+save[ ]+a0-a1,128,ra,s0-s8,a2-a3
60:[ ]+6470[ ]+restore[ ]+128,ra,s0-s1
62:[ ]+f010 6441[ ]+restore[ ]+136,ra
66:[ ]+f100 6408[ ]+restore[ ]+64,s2
6a:[ ]+f71b 6470[ ]+restore[ ]+128,ra,s0-s8,a0-a3
6e:[ ]+6500[ ]+nop

55
gas/testsuite/gas/mips/mips16e-save.s Normal file
View File

@ -0,0 +1,55 @@
# Test the generation of the mips16e save instruction
.set mips16
.text
func:
# Un-extended version
save 8
save $31,16
save $16,24
save $17,32
save $16-$17,40
save $31,$16,48
save $31,$17,56
save $31,$16,$17,64
save $31,$16-$17,72
save 80,$31,$16-$17
save $31,88,$16,$17
save $31,$17,128,$16
# Extended version
save 136
save $31,144
save $16-$17,152
# sreg
save $18,64
save $18-$23,72
save $18-$23,$30,80
save $16-$23,$30,88
# static areg
save 64,$7
save 128,$7,$6
save 256,$7,$6,$5,$4
# areg
save $4,256
save $4,$5,128
save $4,$5,$6,$7,64
# mix areg and static areg
save $4,128,$7
save $4,128,$7,$6,$5
save $4,$5,128,$7,$6
save $4,$5,$6,128,$7
save $4-$5,$16-$23,$30-$31,128,$6-$7
restore $16,$17,$31,128
restore $31,136
restore $18,64
restore $4-$5,$16-$23,$30-$31,128,$6-$7
.p2align 4

6
include/opcode/ChangeLog
View File

@ -1,3 +1,9 @@
2005-11-14 David Ung <davidu@mips.com>
* mips.h: Assign 'm'/'M' codes to MIPS16e save/restore
instructions. Define MIPS16_ALL_ARGS and MIPS16_ALL_STATICS for
save/restore encoding of the args field.
2005-10-28 Dave Brolley <brolley@redhat.com>
Contribute the following changes:

9
include/opcode/mips.h
View File

@ -928,7 +928,14 @@ extern int bfd_mips_num_opcodes;
"A" 8 bit PC relative address * 4 (MIPS16OP_*_IMM8)
"B" 5 bit PC relative address * 8 (MIPS16OP_*_IMM5)
"E" 5 bit PC relative address * 4 (MIPS16OP_*_IMM5)
*/
"m" 7 bit register list for save instruction (18 bit extended)
"M" 7 bit register list for restore instruction (18 bit extended)
*/
/* Save/restore encoding for the args field when all 4 registers are
either saved as arguments or saved/restored as statics. */
#define MIPS16_ALL_ARGS 0xe
#define MIPS16_ALL_STATICS 0xb
/* For the mips16, we use the same opcode table format and a few of
the same flags. However, most of the flags are different. */

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 },