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2005-12-14  Jan Beulich  <jbeulich@novell.com>

	* config/tc-i386.c (add_prefix): More fine-grained handling of
	REX prefixes. Or new prefix value into i.prefix instead of
	assigning.

gas/testsuite/
2005-12-14  Jan Beulich  <jbeulich@novell.com>

	* gas/i386/rex.[sd]: New.
	* gas/i386/i386.exp: Run new test.
This commit is contained in:
Jan Beulich 2005-12-14 08:57:06 +00:00
parent eda87aba05
commit b190548998
6 changed files with 108 additions and 43 deletions
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6
gas/ChangeLog
View File

@ -1,3 +1,9 @@
2005-12-14 Jan Beulich <jbeulich@novell.com>
* config/tc-i386.c (add_prefix): More fine-grained handling of
REX prefixes. Or new prefix value into i.prefix instead of
assigning.
2005-12-13 DJ Delorie <dj@redhat.com>
* config/tc-m32c.c (m32c_md_end): Only pad code sections.

97
gas/config/tc-i386.c
View File

@ -730,55 +730,66 @@ add_prefix (prefix)
unsigned int prefix;
{
int ret = 1;
int q;
unsigned int q;
if (prefix >= REX_OPCODE && prefix < REX_OPCODE + 16
&& flag_code == CODE_64BIT)
q = REX_PREFIX;
else
switch (prefix)
{
default:
abort ();
case CS_PREFIX_OPCODE:
case DS_PREFIX_OPCODE:
case ES_PREFIX_OPCODE:
case FS_PREFIX_OPCODE:
case GS_PREFIX_OPCODE:
case SS_PREFIX_OPCODE:
q = SEG_PREFIX;
break;
case REPNE_PREFIX_OPCODE:
case REPE_PREFIX_OPCODE:
ret = 2;
/* fall thru */
case LOCK_PREFIX_OPCODE:
q = LOCKREP_PREFIX;
break;
case FWAIT_OPCODE:
q = WAIT_PREFIX;
break;
case ADDR_PREFIX_OPCODE:
q = ADDR_PREFIX;
break;
case DATA_PREFIX_OPCODE:
q = DATA_PREFIX;
break;
}
if (i.prefix[q] != 0)
{
as_bad (_("same type of prefix used twice"));
return 0;
if ((i.prefix[REX_PREFIX] & prefix & REX_MODE64)
|| ((i.prefix[REX_PREFIX] & (REX_EXTX | REX_EXTY | REX_EXTZ))
&& (prefix & (REX_EXTX | REX_EXTY | REX_EXTZ))))
ret = 0;
q = REX_PREFIX;
}
else
{
switch (prefix)
{
default:
abort ();
case CS_PREFIX_OPCODE:
case DS_PREFIX_OPCODE:
case ES_PREFIX_OPCODE:
case FS_PREFIX_OPCODE:
case GS_PREFIX_OPCODE:
case SS_PREFIX_OPCODE:
q = SEG_PREFIX;
break;
case REPNE_PREFIX_OPCODE:
case REPE_PREFIX_OPCODE:
ret = 2;
/* fall thru */
case LOCK_PREFIX_OPCODE:
q = LOCKREP_PREFIX;
break;
case FWAIT_OPCODE:
q = WAIT_PREFIX;
break;
case ADDR_PREFIX_OPCODE:
q = ADDR_PREFIX;
break;
case DATA_PREFIX_OPCODE:
q = DATA_PREFIX;
break;
}
if (i.prefix[q] != 0)
ret = 0;
}
i.prefixes += 1;
i.prefix[q] = prefix;
if (ret)
{
if (!i.prefix[q])
++i.prefixes;
i.prefix[q] |= prefix;
}
else
as_bad (_("same type of prefix used twice"));
return ret;
}

5
gas/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2005-12-14 Jan Beulich <jbeulich@novell.com>
* gas/i386/rex.[sd]: New.
* gas/i386/i386.exp: Run new test.
2005-12-12 Nathan Sidwell <nathan@codesourcery.com>
* gas/mt: Renamed from ms1 dir. Update file names as needed.

15
gas/testsuite/gas/i386/i386.exp
View File

@ -133,6 +133,21 @@ if [expr ([istarget "i*86-*-*"] || [istarget "x86_64-*-*"]) && [gas_64_check]] t
run_dump_test "immed64"
run_dump_test "x86-64-prescott"
if { ![istarget "*-*-aix*"]
&& ![istarget "*-*-beos*"]
&& ![istarget "*-*-*bsd*"]
&& ![istarget "*-*-chaos*"]
&& ![istarget "*-*-kaos*"]
&& ![istarget "*-*-lynx*"]
&& ![istarget "*-*-moss*"]
&& ![istarget "*-*-nto-qnx*"]
&& ![istarget "*-*-rtems*"]
&& ![istarget "*-*-sco*"]
&& ![istarget "*-*-solaris*"]
&& ![istarget "*-*-sysv*"] } then {
run_dump_test "rex"
}
# For ELF targets verify that @unwind works.
if { ([istarget "*-*-elf*"] || [istarget "*-*-linux*"]
|| [istarget "*-*-solaris2.*"])

17
gas/testsuite/gas/i386/rex.d Normal file
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@ -0,0 +1,17 @@
#objdump: -dw
#name: x86-64 manual rex prefix use
.*: +file format elf64-x86-64
Disassembly of section .text:
0+ <_start>:
[ ]*[0-9a-f]+:[ ]+40 0f ae 00[ ]+rex fxsavel?[ ]+\(%rax\)
[ ]*[0-9a-f]+:[ ]+48 0f ae 00[ ]+(rex64 )?fxsaveq?[ ]+\(%rax\)
[ ]*[0-9a-f]+:[ ]+41 0f ae 00[ ]+fxsavel?[ ]+\(%r8\)
[ ]*[0-9a-f]+:[ ]+49 0f ae 00[ ]+(rex64Z? )?fxsaveq?[ ]+\(%r8\)
[ ]*[0-9a-f]+:[ ]+42 0f ae 04 05 00 00 00 00[ ]+fxsavel?[ ]+(0x0)?\(,%r8(,1)?\)
[ ]*[0-9a-f]+:[ ]+4a 0f ae 04 05 00 00 00 00[ ]+(rex64Y? )?fxsaveq?[ ]+(0x0)?\(,%r8(,1)?\)
[ ]*[0-9a-f]+:[ ]+43 0f ae 04 00[ ]+fxsavel?[ ]+\(%r8,%r8(,1)?\)
[ ]*[0-9a-f]+:[ ]+4b 0f ae 04 00[ ]+(rex64(YZ)? )?fxsaveq?[ ]+\(%r8,%r8(,1)?\)
#pass

11
gas/testsuite/gas/i386/rex.s Normal file
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@ -0,0 +1,11 @@
.text
_start:
rex/fxsave (%rax)
rex64/fxsave (%rax)
rex/fxsave (%r8)
rex64/fxsave (%r8)
rex/fxsave (,%r8)
rex64/fxsave (,%r8)
rex/fxsave (%r8,%r8)
rex64/fxsave (%r8,%r8)