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gas: fix CBCOND diagnostics for invalid immediate operands.

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This patch fixes two problems in the SPARC assembler:

- The diagnostic message

  Error: Illegal operands: Immediate value in cbcond is out of range.

  is incorrectly issued for non-CBCOND instructions that feature a
  simm5 immediate field, such as MPMUL, MONTMUL, etc.

- When an invalid immediate operand is used in a CBCOND
  instruction, two redundant error messages are issued to the
  user, the second due to a stale fixup (this happens since
  commit 85024cd8bc).

Some diagnostic tests for the CBCOND instructions are also
included in the patch.

Tested in both sparc64-linux-gnu and sparcv9-linux-gnu targets.

gas/ChangeLog:

2016-11-25  Jose E. Marchesi  <jose.marchesi@oracle.com>

	* config/tc-sparc.c (sparc_ip): Avoid emitting a cbcond error
	messages for non-cbcond instructions.
	* testsuite/gas/sparc/cbcond-diag.s: New file.
	* testsuite/gas/sparc/cbcond-diag.l: Likewise.
	* testsuite/gas/sparc/sparc.exp (gas_64_check): Run cbcond-diag tests.
This commit is contained in:
Jose E. Marchesi 2016-11-25 03:40:15 -08:00
parent ec8f768821
commit 65d1cff97c
5 changed files with 20 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
gas/ChangeLog
View File

@ -1,3 +1,11 @@
2016-11-25 Jose E. Marchesi <jose.marchesi@oracle.com>
* config/tc-sparc.c (sparc_ip): Avoid emitting a cbcond error
messages for non-cbcond instructions.
* testsuite/gas/sparc/cbcond-diag.s: New file.
* testsuite/gas/sparc/cbcond-diag.l: Likewise.
* testsuite/gas/sparc/sparc.exp (gas_64_check): Run cbcond-diag tests.
2016-11-23 Jose E. Marchesi <jose.marchesi@oracle.com>
* testsuite/gas/sparc/sparc.exp (gas_64_check): Make sure the

5
gas/config/tc-sparc.c
View File

@ -2937,17 +2937,18 @@ sparc_ip (char *str, const struct sparc_opcode **pinsn)
handle the R_SPARC_5 immediate directly here so that
we don't need to add support for multiple relocations
in one instruction just yet. */
if (the_insn.reloc == BFD_RELOC_SPARC_5)
if (the_insn.reloc == BFD_RELOC_SPARC_5
&& ((insn->match & OP(0x3)) == 0))
{
valueT val = the_insn.exp.X_add_number;
the_insn.reloc = BFD_RELOC_NONE;
if (! in_bitfield_range (val, 0x1f))
{
error_message = _(": Immediate value in cbcond is out of range.");
goto error;
}
opcode |= val & 0x1f;
the_insn.reloc = BFD_RELOC_NONE;
}
}

3
gas/testsuite/gas/sparc/cbcond-diag.l Normal file
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@ -0,0 +1,3 @@
.*cbcond-diag.s: Assembler messages:
.*cbcond-diag.s:3: Error: .*Immediate value in cbcond is out of range\.
.*cbcond-diag.s:4: Error: .*Immediate value in cbcond is out of range\.

5
gas/testsuite/gas/sparc/cbcond-diag.s Normal file
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@ -0,0 +1,5 @@
# Test error conditions in CBCOND instructions
.text
cwbe %o1, +32,1f ! Overflow in the simm5 field.
cwbe %o1, -17,1f ! Likewise.
1: nop

1
gas/testsuite/gas/sparc/sparc.exp
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@ -53,6 +53,7 @@ if [istarget sparc*-*-*] {
run_dump_test "pause"
run_dump_test "save-args"
run_dump_test "cbcond"
run_list_test "cbcond-diag" "-64"
run_dump_test "cfr"
run_dump_test "crypto"
run_dump_test "edge"