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PR 10169 

* gas/tc-arm.c (do_t_ssat): Move common code from here...
        (do_t_usat): ... and here to...
        (do_t_ssat_usat): New function: ... here.  Add code to check that
        the shift value, if present, is in range.

        * gas/arm/thumb2_bad_reg.s: Add tests for SSAT and USAT with an
        out of range shift.
        * gas/arm/thumb2_bad_reg.l: Update expected error messages.
This commit is contained in:
Nick Clifton 2009-06-18 16:36:05 +00:00
parent c2e61a4e93
commit 3a21c15a77
5 changed files with 38 additions and 33 deletions
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8
gas/ChangeLog
View File

@ -1,3 +1,11 @@
2009-06-18 Nick Clifton <nickc@redhat.com>
PR 10169
* gas/tc-arm.c (do_t_ssat): Move common code from here...
(do_t_usat): ... and here to...
(do_t_ssat_usat): New function: ... here. Add code to check that
the shift value, if present, is in range.
2009-06-18 Dave Korn <dave.korn.cygwin@gmail.com>
Merge cegcc and mingw32ce target name changes

54
gas/config/tc-arm.c
View File

@ -10654,7 +10654,7 @@ do_t_smc (void)
}
static void
do_t_ssat (void)
do_t_ssat_usat (int bias)
{
unsigned Rd, Rn;
@ -10665,24 +10665,37 @@ do_t_ssat (void)
reject_bad_reg (Rn);
inst.instruction |= Rd << 8;
inst.instruction |= inst.operands[1].imm - 1;
inst.instruction |= inst.operands[1].imm - bias;
inst.instruction |= Rn << 16;
if (inst.operands[3].present)
{
offsetT shift_amount = inst.reloc.exp.X_add_number;
inst.reloc.type = BFD_RELOC_UNUSED;
constraint (inst.reloc.exp.X_op != O_constant,
_("expression too complex"));
if (inst.reloc.exp.X_add_number != 0)
if (shift_amount != 0)
{
constraint (shift_amount > 31,
_("shift expression is too large"));
if (inst.operands[3].shift_kind == SHIFT_ASR)
inst.instruction |= 0x00200000; /* sh bit */
inst.instruction |= (inst.reloc.exp.X_add_number & 0x1c) << 10;
inst.instruction |= (inst.reloc.exp.X_add_number & 0x03) << 6;
inst.instruction |= 0x00200000; /* sh bit. */
inst.instruction |= (shift_amount & 0x1c) << 10;
inst.instruction |= (shift_amount & 0x03) << 6;
}
inst.reloc.type = BFD_RELOC_UNUSED;
}
}
static void
do_t_ssat (void)
{
do_t_ssat_usat (1);
}
static void
do_t_ssat16 (void)
@ -10818,32 +10831,7 @@ do_t_tb (void)
static void
do_t_usat (void)
{
unsigned Rd, Rn;
Rd = inst.operands[0].reg;
Rn = inst.operands[2].reg;
reject_bad_reg (Rd);
reject_bad_reg (Rn);
inst.instruction |= Rd << 8;
inst.instruction |= inst.operands[1].imm;
inst.instruction |= Rn << 16;
if (inst.operands[3].present)
{
constraint (inst.reloc.exp.X_op != O_constant,
_("expression too complex"));
if (inst.reloc.exp.X_add_number != 0)
{
if (inst.operands[3].shift_kind == SHIFT_ASR)
inst.instruction |= 0x00200000; /* sh bit */
inst.instruction |= (inst.reloc.exp.X_add_number & 0x1c) << 10;
inst.instruction |= (inst.reloc.exp.X_add_number & 0x03) << 6;
}
inst.reloc.type = BFD_RELOC_UNUSED;
}
do_t_ssat_usat (0);
}
static void

5
gas/testsuite/ChangeLog
View File

@ -1,5 +1,10 @@
2009-06-18 Nick Clifton <nickc@redhat.com>
PR 10169
* gas/arm/thumb2_bad_reg.s: Add tests for SSAT and USAT with an
out of range shift.
* gas/arm/thumb2_bad_reg.l: Update expected error messages.
PR 10288
* gas/arm/align.s: Add labels so that COFF based targets can
correctly locate THUMB code.

2
gas/testsuite/gas/arm/thumb2_bad_reg.l
View File

@ -504,6 +504,7 @@
[^:]*:[0-9]+: Error: r15 not allowed here -- `ssat r15,#1,r0'
[^:]*:[0-9]+: Error: r13 not allowed here -- `ssat r0,#1,r13'
[^:]*:[0-9]+: Error: r15 not allowed here -- `ssat r0,#1,r15'
[^:]*:[0-9]+: Error: shift expression is too large -- `ssat r1,#1,r3,asr#32'
[^:]*:[0-9]+: Error: r13 not allowed here -- `ssat16 r13,#1,r0'
[^:]*:[0-9]+: Error: r15 not allowed here -- `ssat16 r15,#1,r0'
[^:]*:[0-9]+: Error: r13 not allowed here -- `ssat16 r0,#1,r13'
@ -731,6 +732,7 @@
[^:]*:[0-9]+: Error: r15 not allowed here -- `usat r15,#1,r0'
[^:]*:[0-9]+: Error: r13 not allowed here -- `usat r0,#1,r13'
[^:]*:[0-9]+: Error: r15 not allowed here -- `usat r0,#1,r15'
[^:]*:[0-9]+: Error: shift expression is too large -- `usat r1,#1,r3,asr#32'
[^:]*:[0-9]+: Error: r13 not allowed here -- `usat16 r13,#1,r0'
[^:]*:[0-9]+: Error: r15 not allowed here -- `usat16 r15,#1,r0'
[^:]*:[0-9]+: Error: r13 not allowed here -- `usat16 r0,#1,r13'

2
gas/testsuite/gas/arm/thumb2_bad_reg.s
View File

@ -630,6 +630,7 @@ test:
ssat r15, #1, r0
ssat r0, #1, r13
ssat r0, #1, r15
ssat r1, #1, r3,asr #32
@ SSAT16
ssat16 r13, #1, r0
ssat16 r15, #1, r0
@ -909,6 +910,7 @@ test:
usat r15, #1, r0
usat r0, #1, r13
usat r0, #1, r15
usat r1, #1, r3,asr #32
@ USAT16
usat16 r13, #1, r0
usat16 r15, #1, r0