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2003-01-02  Chris Demetriou  <cgd@broadcom.com>

        * config/tc-mips.c: Update copyright years to include 2003.
        (mips_ip): Fix indentation of "+A", "+B", and "+C" handling.
        Additionally, clean up their code slightly and clean up their
        comments some more.


        * doc/c-mips.texi: Add MIPS32r2 to ".set mipsN" documentation.

[ gas/testsuite/ChangeLog ]
2003-01-02  Chris Demetriou  <cgd@broadcom.com>

        * gas/mips/elf_arch_mips32r2.d: Fix file description comment.

[ include/opcode/ChangeLog ]
2003-01-02  Chris Demetriou  <cgd@broadcom.com>

        * mips.h: Update copyright years to include 2002 (which had
        been missed previously) and 2003.  Make comments about "+A",
        "+B", and "+C" operand types more descriptive.
This commit is contained in:
Chris Demetriou 2003-01-02 20:03:09 +00:00
parent 06825bd145
commit 071742cf97
7 changed files with 101 additions and 60 deletions
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9
gas/ChangeLog
View file

@ -1,3 +1,12 @@
2003-01-02 Chris Demetriou <cgd@broadcom.com>
* config/tc-mips.c: Update copyright years to include 2003.
(mips_ip): Fix indentation of "+A", "+B", and "+C" handling.
Additionally, clean up their code slightly and clean up their
comments some more.
* doc/c-mips.texi: Add MIPS32r2 to ".set mipsN" documentation.
2003-01-01 Daniel Jacobowitz <drow@mvista.com>
* doc/Makefile.am (as.1): Depend on "asconfig.texi gasver.texi

57
gas/config/tc-mips.c
View file

@ -1,5 +1,5 @@
/* tc-mips.c -- assemble code for a MIPS chip.
Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
Free Software Foundation, Inc.
Contributed by the OSF and Ralph Campbell.
Written by Keith Knowles and Ralph Campbell, working independently.
@ -8118,6 +8118,7 @@ mips_ip (str, ip)
unsigned int regno;
unsigned int lastregno = 0;
unsigned int lastpos = 0;
unsigned int limlo, limhi;
char *s_reset;
char save_c = 0;
@ -8286,55 +8287,73 @@ mips_ip (str, ip)
case '+': /* Opcode extension character. */
switch (*++args)
{
case 'A': /* ins/ext "pos". */
case 'A': /* ins/ext position, becomes LSB. */
limlo = 0;
limhi = 31;
my_getExpression (&imm_expr, s);
check_absolute_expr (ip, &imm_expr);
if ((unsigned long) imm_expr.X_add_number > 31)
if ((unsigned long) imm_expr.X_add_number < limlo
|| (unsigned long) imm_expr.X_add_number > limhi)
{
as_bad (_("Improper position (%lu)"),
(unsigned long) imm_expr.X_add_number);
imm_expr.X_add_number = 0;
imm_expr.X_add_number = limlo;
}
lastpos = imm_expr.X_add_number;
ip->insn_opcode |= lastpos << OP_SH_SHAMT;
ip->insn_opcode |= (imm_expr.X_add_number
& OP_MASK_SHAMT) << OP_SH_SHAMT;
imm_expr.X_op = O_absent;
s = expr_end;
continue;
case 'B': /* "ins" size spec (becomes MSB). */
case 'B': /* ins size, becomes MSB. */
limlo = 1;
limhi = 32;
my_getExpression (&imm_expr, s);
check_absolute_expr (ip, &imm_expr);
if (imm_expr.X_add_number == 0
|| (unsigned long) imm_expr.X_add_number > 32
/* Check for negative input so that small negative numbers
will not succeed incorrectly. The checks against
(pos+size) transitively check "size" itself,
assuming that "pos" is reasonable. */
if ((long) imm_expr.X_add_number < 0
|| ((unsigned long) imm_expr.X_add_number
+ lastpos) > 32)
+ lastpos) < limlo
|| ((unsigned long) imm_expr.X_add_number
+ lastpos) > limhi)
{
as_bad (_("Improper insert size (%lu, position %lu)"),
(unsigned long) imm_expr.X_add_number,
(unsigned long) lastpos);
imm_expr.X_add_number &= OP_MASK_INSMSB;
imm_expr.X_add_number = limlo - lastpos;
}
ip->insn_opcode |= (lastpos + imm_expr.X_add_number
- 1) << OP_SH_INSMSB;
ip->insn_opcode |= ((lastpos + imm_expr.X_add_number - 1)
& OP_MASK_INSMSB) << OP_SH_INSMSB;
imm_expr.X_op = O_absent;
s = expr_end;
continue;
case 'C': /* "ext" size spec (becomes MSBD). */
case 'C': /* ext size, becomes MSBD. */
limlo = 1;
limhi = 32;
my_getExpression (&imm_expr, s);
check_absolute_expr (ip, &imm_expr);
if (imm_expr.X_add_number == 0
|| (unsigned long) imm_expr.X_add_number > 32
/* Check for negative input so that small negative numbers
will not succeed incorrectly. The checks against
(pos+size) transitively check "size" itself,
assuming that "pos" is reasonable. */
if ((long) imm_expr.X_add_number < 0
|| ((unsigned long) imm_expr.X_add_number
+ lastpos) > 32)
+ lastpos) < limlo
|| ((unsigned long) imm_expr.X_add_number
+ lastpos) > limhi)
{
as_bad (_("Improper extract size (%lu, position %lu)"),
(unsigned long) imm_expr.X_add_number,
(unsigned long) lastpos);
imm_expr.X_add_number &= OP_MASK_EXTMSBD;
imm_expr.X_add_number = limlo - lastpos;
}
ip->insn_opcode |= (imm_expr.X_add_number
- 1) << OP_SH_EXTMSBD;
ip->insn_opcode |= ((imm_expr.X_add_number - 1)
& OP_MASK_EXTMSBD) << OP_SH_EXTMSBD;
imm_expr.X_op = O_absent;
s = expr_end;
continue;

4
gas/doc/c-mips.texi
View file

@ -288,8 +288,8 @@ assembly language programmers!
@kindex @code{.set mips@var{n}}
@sc{gnu} @code{@value{AS}} supports an additional directive to change
the @sc{mips} Instruction Set Architecture level on the fly: @code{.set
mips@var{n}}. @var{n} should be a number from 0 to 5, or 32 or 64.
The values 1 to 5, 32, and 64 make the assembler accept instructions
mips@var{n}}. @var{n} should be a number from 0 to 5, or 32, 32r2, or 64.
The values other than 0 make the assembler accept instructions
for the corresponding @sc{isa} level, from that point on in the
assembly. @code{.set mips@var{n}} affects not only which instructions
are permitted, but also how certain macros are expanded. @code{.set

4
gas/testsuite/ChangeLog
View file

@ -1,3 +1,7 @@
2003-01-02 Chris Demetriou <cgd@broadcom.com>
* gas/mips/elf_arch_mips32r2.d: Fix file description comment.
2002-12-31 Chris Demetriou <cgd@broadcom.com>
* gas/mips/cp0sel-names-mips32.d: New test.

2
gas/testsuite/gas/mips/mips32r2.d
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@ -1,7 +1,7 @@
#objdump: -dr --prefix-addresses --show-raw-insn -M reg-names=numeric
#name: MIPS MIPS32r2 instructions
# Check MIPS32 instruction assembly
# Check MIPS32 Release 2 (mips32r2) instruction assembly
.*: +file format .*mips.*

6
include/opcode/ChangeLog
View file

@ -1,3 +1,9 @@
2003-01-02 Chris Demetriou <cgd@broadcom.com>
* mips.h: Update copyright years to include 2002 (which had
been missed previously) and 2003. Make comments about "+A",
"+B", and "+C" operand types more descriptive.
2002-12-31 Chris Demetriou <cgd@broadcom.com>
* mips.h: Note that the "+D" operand type name is now used.

15
include/opcode/mips.h
View file

@ -1,5 +1,5 @@
/* mips.h. Mips opcode list for GDB, the GNU debugger.
Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
Free Software Foundation, Inc.
Contributed by Ralph Campbell and OSF
Commented and modified by Ian Lance Taylor, Cygnus Support
@ -233,11 +233,14 @@ struct mips_opcode
"x" accept and ignore register name
"z" must be zero register
"K" 5 bit Hardware Register (rdhwr instruction) (OP_*_RD)
"+A" 5 bit ins/ext position/lsb (OP_*_SHAMT)
"+B" 5 bit "ins" size spec (OP_*_INSMSB). Requires that "+A"
occur first!
"+C" 5 bit "ext" msbd spec (OP_*_EXTMSBD). Requires that "+A"
occur first!
"+A" 5 bit ins/ext position, which becomes LSB (OP_*_SHAMT).
Enforces: 0 <= pos < 32.
"+B" 5 bit ins size, which becomes MSB (OP_*_INSMSB).
Requires that "+A" occur first to set position.
Enforces: 0 < (pos+size) <= 32.
"+C" 5 bit ext size, which becomes MSBD (OP_*_EXTMSBD).
Requires that "+A" occur first to set position.
Enforces: 0 < (pos+size) <= 32.
Floating point instructions:
"D" 5 bit destination register (OP_*_FD)